/* ============================================================
   OSC_CUSTOM.CSS - OnlineShoppingCart Design System
   Modern 2026 Glassmorphism Multi-Tenant SaaS E-Commerce
   Version: 1.0.0 | Prefix: osc-
   ============================================================ */

/* ============================================================
   1. CSS VARIABLES / DESIGN TOKENS
   ============================================================ */
:root {
    /* Brand Colors */
    --osc-primary: #5B4EE5;
    --osc-primary-light: #7C6FF0;
    --osc-primary-dark: #4A3ED4;
    --osc-accent: #C9A84C;
    --osc-accent-light: #E8D48B;

    /* Semantic Colors */
    --osc-success: #059669;
    --osc-success-light: #D1FAE5;
    --osc-warning: #D97706;
    --osc-warning-light: #FEF3C7;
    --osc-danger: #DC2626;
    --osc-danger-light: #FEE2E2;
    --osc-info: #0891B2;
    --osc-info-light: #CFFAFE;

    /* Glass / Surface */
    --osc-glass-bg: rgba(255, 255, 255, 0.75);
    --osc-glass-border: rgba(255, 255, 255, 0.6);
    --osc-glass-shadow: 0 4px 24px rgba(0, 0, 0, 0.03);
    --osc-glass-blur: 16px;

    /* Neutrals */
    --osc-body-bg: #F0EFF5;
    --osc-text: #1E1B3A;
    --osc-text-secondary: #6B6B8D;
    --osc-text-muted: #9E9EB8;
    --osc-border: #E5E5F0;
    --osc-divider: rgba(0, 0, 0, 0.06);

    /* Layout */
    --osc-sidebar-width: 270px;
    --osc-sidebar-collapsed: 72px;
    --osc-header-height: 64px;
    --osc-radius: 20px;
    --osc-radius-sm: 12px;
    --osc-radius-xs: 8px;
    --osc-radius-full: 9999px;

    /* Motion */
    --osc-transition: all 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    --osc-spring: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    --osc-ease-out: all 0.3s cubic-bezier(0, 0, 0.2, 1);

    /* Spacing */
    --osc-space-xs: 4px;
    --osc-space-sm: 8px;
    --osc-space-md: 16px;
    --osc-space-lg: 24px;
    --osc-space-xl: 32px;
    --osc-space-2xl: 48px;

    /* Typography */
    --osc-font: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --osc-font-mono: 'JetBrains Mono', 'Cascadia Code', monospace;
    --osc-font-size-xs: 0.75rem;
    --osc-font-size-sm: 0.8125rem;
    --osc-font-size-base: 0.9375rem;
    --osc-font-size-lg: 1.125rem;
    --osc-font-size-xl: 1.5rem;
    --osc-font-size-2xl: 2rem;

    /* Z-Index Scale */
    --osc-z-dropdown: 100;
    --osc-z-sidebar: 200;
    --osc-z-header: 300;
    --osc-z-modal: 400;
    --osc-z-toast: 500;
    --osc-z-confirm: 450;
}

/* ============================================================
   2. KEYFRAME ANIMATIONS
   ============================================================ */
@keyframes osc-fade-in {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes osc-fade-in-down {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes osc-slide-in-left {
    from {
        opacity: 0;
        transform: translateX(-100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes osc-slide-in-right {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes osc-scale-in {
    from {
        opacity: 0;
        transform: scale(0.92);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes osc-shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

@keyframes osc-pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.05);
    }
}

@keyframes osc-float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-6px);
    }
}

@keyframes osc-spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes osc-toast-in {
    from {
        opacity: 0;
        transform: translateX(100%) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

@keyframes osc-toast-out {
    from {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
    to {
        opacity: 0;
        transform: translateX(100%) scale(0.9);
    }
}

@keyframes osc-progress-bar {
    from {
        width: 100%;
    }
    to {
        width: 0%;
    }
}

@keyframes osc-ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

@keyframes osc-bounce-in {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.95);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* ============================================================
   3. BASE / RESET OVERRIDES
   ============================================================ */
body.osc-body {
    font-family: var(--osc-font);
    font-size: var(--osc-font-size-base);
    color: var(--osc-text);
    background: var(--osc-body-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

/* ============================================================
   4. GLASS CARD
   ============================================================ */
.osc-glass-card {
    background: var(--osc-glass-bg);
    border: 1px solid var(--osc-glass-border);
    border-radius: var(--osc-radius);
    box-shadow: var(--osc-glass-shadow);
    backdrop-filter: blur(var(--osc-glass-blur));
    -webkit-backdrop-filter: blur(var(--osc-glass-blur));
    padding: var(--osc-space-lg);
    transition: var(--osc-transition);
    animation: osc-fade-in 0.45s ease-out both;
}

.osc-glass-card:hover {
    box-shadow: 0 8px 36px rgba(91, 78, 229, 0.08), 0 2px 12px rgba(0, 0, 0, 0.04);
    transform: translateY(-2px);
}

.osc-glass-card.osc-no-hover:hover {
    box-shadow: var(--osc-glass-shadow);
    transform: none;
}

.osc-glass-card .osc-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--osc-space-lg);
    padding-bottom: var(--osc-space-md);
    border-bottom: 1px solid var(--osc-divider);
}

.osc-glass-card .osc-card-header h3,
.osc-glass-card .osc-card-header h4 {
    margin: 0;
    font-weight: 600;
    color: var(--osc-text);
}

.osc-glass-card .osc-card-body {
    padding: 0;
}

.osc-glass-card .osc-card-footer {
    margin-top: var(--osc-space-lg);
    padding-top: var(--osc-space-md);
    border-top: 1px solid var(--osc-divider);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--osc-space-sm);
}

/* ============================================================
   5. STAT CARD
   ============================================================ */
.osc-stat-card {
    background: var(--osc-glass-bg);
    border: 1px solid var(--osc-glass-border);
    border-radius: var(--osc-radius);
    box-shadow: var(--osc-glass-shadow);
    backdrop-filter: blur(var(--osc-glass-blur));
    -webkit-backdrop-filter: blur(var(--osc-glass-blur));
    padding: var(--osc-space-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--osc-space-md);
    transition: var(--osc-transition);
    animation: osc-fade-in 0.45s ease-out both;
    position: relative;
    overflow: hidden;
}

.osc-stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(91, 78, 229, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(30%, -30%);
    pointer-events: none;
}

.osc-stat-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(91, 78, 229, 0.1);
}

.osc-stat-card .osc-stat-icon {
    width: 52px;
    height: 52px;
    min-width: 52px;
    border-radius: var(--osc-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    color: #fff;
    background: linear-gradient(135deg, var(--osc-primary), var(--osc-primary-light));
}

.osc-stat-card .osc-stat-icon.osc-success {
    background: linear-gradient(135deg, var(--osc-success), #10B981);
}

.osc-stat-card .osc-stat-icon.osc-warning {
    background: linear-gradient(135deg, var(--osc-warning), #F59E0B);
}

.osc-stat-card .osc-stat-icon.osc-danger {
    background: linear-gradient(135deg, var(--osc-danger), #EF4444);
}

.osc-stat-card .osc-stat-icon.osc-info {
    background: linear-gradient(135deg, var(--osc-info), #06B6D4);
}

.osc-stat-card .osc-stat-icon.osc-accent {
    background: linear-gradient(135deg, var(--osc-accent), var(--osc-accent-light));
}

.osc-stat-card .osc-stat-content {
    flex: 1;
    min-width: 0;
}

.osc-stat-card .osc-stat-label {
    font-size: var(--osc-font-size-sm);
    color: var(--osc-text-secondary);
    font-weight: 500;
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.osc-stat-card .osc-stat-value {
    font-size: var(--osc-font-size-2xl);
    font-weight: 700;
    color: var(--osc-text);
    line-height: 1.2;
}

.osc-stat-card .osc-stat-trend {
    font-size: var(--osc-font-size-xs);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 3px;
    margin-top: 6px;
    padding: 2px 8px;
    border-radius: var(--osc-radius-full);
}

.osc-stat-card .osc-stat-trend.osc-up {
    color: var(--osc-success);
    background: var(--osc-success-light);
}

.osc-stat-card .osc-stat-trend.osc-down {
    color: var(--osc-danger);
    background: var(--osc-danger-light);
}

/* Stat Cards Grid */
.osc-stat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--osc-space-lg);
}

/* ============================================================
   6. SIDEBAR
   ============================================================ */
.osc-sidebar {
    width: var(--osc-sidebar-width);
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    z-index: var(--osc-z-sidebar);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--osc-glass-border);
    display: flex;
    flex-direction: column;
    transition: var(--osc-transition);
    overflow: hidden;
}

.osc-sidebar .osc-sidebar-brand {
    height: var(--osc-header-height);
    display: flex;
    align-items: center;
    padding: 0 var(--osc-space-lg);
    border-bottom: 1px solid var(--osc-divider);
    gap: var(--osc-space-sm);
    flex-shrink: 0;
}

.osc-sidebar .osc-sidebar-brand img {
    height: 34px;
    width: auto;
}

.osc-sidebar .osc-sidebar-brand .osc-brand-text {
    font-size: var(--osc-font-size-lg);
    font-weight: 700;
    color: var(--osc-primary);
    white-space: nowrap;
}

.osc-sidebar .osc-sidebar-nav {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--osc-space-md) 0;
}

.osc-sidebar .osc-sidebar-nav::-webkit-scrollbar {
    width: 4px;
}

.osc-sidebar .osc-sidebar-nav::-webkit-scrollbar-track {
    background: transparent;
}

.osc-sidebar .osc-sidebar-nav::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: var(--osc-radius-full);
}

.osc-sidebar .osc-nav-section {
    padding: var(--osc-space-sm) var(--osc-space-lg);
    margin-top: var(--osc-space-sm);
}

.osc-sidebar .osc-nav-section-title {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--osc-text-muted);
    margin-bottom: var(--osc-space-xs);
}

/* ============================================================
   7. NAV ITEM
   ============================================================ */
.osc-nav-item {
    display: flex;
    align-items: center;
    padding: 10px var(--osc-space-lg);
    gap: var(--osc-space-sm);
    color: var(--osc-text-secondary);
    text-decoration: none;
    font-size: var(--osc-font-size-sm);
    font-weight: 500;
    border-left: 3px solid transparent;
    transition: var(--osc-transition);
    cursor: pointer;
    position: relative;
    margin: 2px 0;
}

.osc-nav-item i,
.osc-nav-item .fa,
.osc-nav-item .fas,
.osc-nav-item .far {
    width: 22px;
    text-align: center;
    font-size: 1rem;
    flex-shrink: 0;
    transition: var(--osc-transition);
}

.osc-nav-item .osc-nav-text {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.osc-nav-item .osc-nav-arrow {
    font-size: 0.7rem;
    transition: transform 0.3s ease;
    margin-left: auto;
}

.osc-nav-item:hover {
    color: var(--osc-primary);
    background: rgba(91, 78, 229, 0.04);
    border-left-color: rgba(91, 78, 229, 0.2);
}

.osc-nav-item.active {
    color: var(--osc-primary);
    background: rgba(91, 78, 229, 0.06);
    border-left-color: var(--osc-accent);
    font-weight: 600;
}

.osc-nav-item.active i {
    color: var(--osc-primary);
}

.osc-nav-item.active::after {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--osc-accent);
    border-radius: 0 4px 4px 0;
    animation: osc-pulse 2s ease-in-out infinite;
}

.osc-nav-item .osc-nav-badge {
    font-size: 0.6875rem;
    padding: 2px 7px;
    border-radius: var(--osc-radius-full);
    background: var(--osc-danger);
    color: #fff;
    font-weight: 600;
    line-height: 1.4;
    margin-left: auto;
}

/* ============================================================
   8. SUBMENU
   ============================================================ */
.osc-submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    background: rgba(91, 78, 229, 0.015);
}

.osc-submenu.open {
    max-height: 500px;
}

.osc-submenu .osc-nav-item {
    padding-left: 54px;
    font-size: var(--osc-font-size-xs);
    border-left: none;
}

.osc-submenu .osc-nav-item::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--osc-text-muted);
    transition: var(--osc-transition);
    flex-shrink: 0;
}

.osc-submenu .osc-nav-item:hover::before,
.osc-submenu .osc-nav-item.active::before {
    background: var(--osc-primary);
}

.osc-nav-item.has-submenu .osc-nav-arrow {
    transition: transform 0.3s ease;
}

.osc-nav-item.has-submenu.open .osc-nav-arrow {
    transform: rotate(90deg);
}

/* ============================================================
   9. HEADER
   ============================================================ */
.osc-header {
    height: var(--osc-header-height);
    position: sticky;
    top: 0;
    z-index: var(--osc-z-header);
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--osc-glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--osc-space-xl);
    margin-left: var(--osc-sidebar-width);
    transition: var(--osc-transition);
}

.osc-header .osc-header-left {
    display: flex;
    align-items: center;
    gap: var(--osc-space-md);
}

.osc-header .osc-header-right {
    display: flex;
    align-items: center;
    gap: var(--osc-space-lg);
}

.osc-header .osc-hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--osc-text);
    cursor: pointer;
    padding: var(--osc-space-sm);
    border-radius: var(--osc-radius-xs);
    transition: var(--osc-transition);
}

.osc-header .osc-hamburger:hover {
    background: rgba(91, 78, 229, 0.06);
    color: var(--osc-primary);
}

.osc-header .osc-page-title {
    font-size: var(--osc-font-size-lg);
    font-weight: 600;
    color: var(--osc-text);
    margin: 0;
}

.osc-header .osc-header-search {
    position: relative;
}

.osc-header .osc-header-search input {
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid transparent;
    border-radius: var(--osc-radius-full);
    padding: 8px 16px 8px 38px;
    font-size: var(--osc-font-size-sm);
    color: var(--osc-text);
    width: 260px;
    transition: var(--osc-transition);
    font-family: var(--osc-font);
}

.osc-header .osc-header-search input:focus {
    outline: none;
    border-color: var(--osc-primary-light);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(91, 78, 229, 0.1);
    width: 320px;
}

.osc-header .osc-header-search i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--osc-text-muted);
    font-size: 0.875rem;
}

.osc-header .osc-header-icon-btn {
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: var(--osc-radius-sm);
    border: none;
    background: transparent;
    color: var(--osc-text-secondary);
    font-size: 1.15rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--osc-transition);
}

.osc-header .osc-header-icon-btn:hover {
    background: rgba(91, 78, 229, 0.06);
    color: var(--osc-primary);
}

.osc-header .osc-header-icon-btn .osc-notif-dot {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 8px;
    height: 8px;
    background: var(--osc-danger);
    border-radius: 50%;
    border: 2px solid #fff;
}

/* ============================================================
   10. MAIN CONTENT AREA
   ============================================================ */
.osc-main {
    margin-left: var(--osc-sidebar-width);
    padding: var(--osc-space-xl);
    min-height: calc(100vh - var(--osc-header-height));
    transition: var(--osc-transition);
}

.osc-page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--osc-space-xl);
    flex-wrap: wrap;
    gap: var(--osc-space-md);
}

.osc-page-header h1,
.osc-page-header h2 {
    margin: 0;
    font-weight: 700;
    color: var(--osc-text);
}

.osc-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--osc-space-sm);
    font-size: var(--osc-font-size-sm);
    color: var(--osc-text-muted);
    margin-bottom: var(--osc-space-xs);
}

.osc-breadcrumb a {
    color: var(--osc-text-secondary);
    text-decoration: none;
    transition: var(--osc-transition);
}

.osc-breadcrumb a:hover {
    color: var(--osc-primary);
}

.osc-breadcrumb .osc-breadcrumb-sep {
    font-size: 0.6rem;
    color: var(--osc-text-muted);
}

/* ============================================================
   11. TABLE WRAPPER
   ============================================================ */
.osc-table-wrapper {
    background: var(--osc-glass-bg);
    border: 1px solid var(--osc-glass-border);
    border-radius: var(--osc-radius);
    box-shadow: var(--osc-glass-shadow);
    backdrop-filter: blur(var(--osc-glass-blur));
    -webkit-backdrop-filter: blur(var(--osc-glass-blur));
    overflow: hidden;
    animation: osc-fade-in 0.45s ease-out both;
}

.osc-table-wrapper .osc-table-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--osc-space-lg);
    border-bottom: 1px solid var(--osc-divider);
    flex-wrap: wrap;
    gap: var(--osc-space-sm);
}

.osc-table-wrapper table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--osc-font-size-sm);
}

.osc-table-wrapper table thead th {
    padding: 14px var(--osc-space-lg);
    text-align: left;
    font-weight: 600;
    font-size: var(--osc-font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--osc-text-muted);
    background: rgba(0, 0, 0, 0.015);
    border-bottom: 1px solid var(--osc-divider);
    white-space: nowrap;
}

.osc-table-wrapper table tbody td {
    padding: 14px var(--osc-space-lg);
    border-bottom: 1px solid var(--osc-divider);
    color: var(--osc-text);
    vertical-align: middle;
}

.osc-table-wrapper table tbody tr {
    transition: var(--osc-transition);
}

.osc-table-wrapper table tbody tr:hover {
    background: rgba(91, 78, 229, 0.025);
}

.osc-table-wrapper table tbody tr:last-child td {
    border-bottom: none;
}

.osc-table-wrapper .osc-table-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--osc-space-md) var(--osc-space-lg);
    border-top: 1px solid var(--osc-divider);
    font-size: var(--osc-font-size-sm);
    color: var(--osc-text-secondary);
}

.osc-table-actions {
    display: flex;
    align-items: center;
    gap: var(--osc-space-sm);
}

.osc-table-actions button {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    border-radius: var(--osc-radius-xs);
    color: var(--osc-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--osc-transition);
    font-size: 0.85rem;
}

.osc-table-actions button:hover {
    background: rgba(91, 78, 229, 0.08);
    color: var(--osc-primary);
}

.osc-table-actions button.osc-action-danger:hover {
    background: rgba(220, 38, 38, 0.08);
    color: var(--osc-danger);
}

/* ============================================================
   12. BADGES
   ============================================================ */
.osc-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: var(--osc-radius-full);
    font-size: var(--osc-font-size-xs);
    font-weight: 600;
    letter-spacing: 0.3px;
    white-space: nowrap;
    line-height: 1.5;
}

.osc-badge.osc-badge-success {
    background: var(--osc-success-light);
    color: var(--osc-success);
}

.osc-badge.osc-badge-warning {
    background: var(--osc-warning-light);
    color: var(--osc-warning);
}

.osc-badge.osc-badge-danger {
    background: var(--osc-danger-light);
    color: var(--osc-danger);
}

.osc-badge.osc-badge-info {
    background: var(--osc-info-light);
    color: var(--osc-info);
}

.osc-badge.osc-badge-primary {
    background: rgba(91, 78, 229, 0.1);
    color: var(--osc-primary);
}

.osc-badge.osc-badge-accent {
    background: rgba(201, 168, 76, 0.15);
    color: #8B7328;
}

.osc-badge .osc-badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    animation: osc-pulse 2s infinite;
}

/* ============================================================
   13. BUTTONS
   ============================================================ */
.osc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--osc-space-sm);
    padding: 10px 22px;
    border-radius: var(--osc-radius-sm);
    font-family: var(--osc-font);
    font-size: var(--osc-font-size-sm);
    font-weight: 600;
    border: 1.5px solid transparent;
    cursor: pointer;
    transition: var(--osc-spring);
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    line-height: 1.5;
}

.osc-btn:active {
    transform: scale(0.97);
}

.osc-btn i {
    font-size: 0.9em;
}

/* Primary */
.osc-btn-primary {
    background: linear-gradient(135deg, var(--osc-primary), var(--osc-primary-light));
    color: #fff;
    box-shadow: 0 2px 10px rgba(91, 78, 229, 0.25);
}

.osc-btn-primary:hover {
    box-shadow: 0 4px 18px rgba(91, 78, 229, 0.35);
    transform: translateY(-1px);
}

/* Secondary */
.osc-btn-secondary {
    background: rgba(91, 78, 229, 0.08);
    color: var(--osc-primary);
    border-color: transparent;
}

.osc-btn-secondary:hover {
    background: rgba(91, 78, 229, 0.14);
}

/* Outline */
.osc-btn-outline {
    background: transparent;
    color: var(--osc-text-secondary);
    border-color: var(--osc-border);
}

.osc-btn-outline:hover {
    border-color: var(--osc-primary-light);
    color: var(--osc-primary);
    background: rgba(91, 78, 229, 0.03);
}

/* Danger */
.osc-btn-danger {
    background: linear-gradient(135deg, var(--osc-danger), #EF4444);
    color: #fff;
    box-shadow: 0 2px 10px rgba(220, 38, 38, 0.2);
}

.osc-btn-danger:hover {
    box-shadow: 0 4px 18px rgba(220, 38, 38, 0.3);
    transform: translateY(-1px);
}

/* Success */
.osc-btn-success {
    background: linear-gradient(135deg, var(--osc-success), #10B981);
    color: #fff;
    box-shadow: 0 2px 10px rgba(5, 150, 105, 0.2);
}

.osc-btn-success:hover {
    box-shadow: 0 4px 18px rgba(5, 150, 105, 0.3);
    transform: translateY(-1px);
}

/* Ghost */
.osc-btn-ghost {
    background: transparent;
    color: var(--osc-text-secondary);
    border: none;
    padding: 8px 14px;
}

.osc-btn-ghost:hover {
    background: rgba(0, 0, 0, 0.04);
    color: var(--osc-text);
}

/* Sizes */
.osc-btn-sm {
    padding: 6px 14px;
    font-size: var(--osc-font-size-xs);
    border-radius: var(--osc-radius-xs);
}

.osc-btn-lg {
    padding: 14px 30px;
    font-size: var(--osc-font-size-base);
    border-radius: var(--osc-radius);
}

.osc-btn-icon {
    width: 38px;
    height: 38px;
    padding: 0;
    border-radius: var(--osc-radius-sm);
}

.osc-btn-icon.osc-btn-sm {
    width: 30px;
    height: 30px;
}

/* Loading */
.osc-btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

.osc-btn.loading::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: osc-spin 0.6s linear infinite;
    margin-left: 6px;
}

/* ============================================================
   14. FORM INPUTS
   ============================================================ */
.osc-input,
.osc-select,
.osc-textarea {
    width: 100%;
    padding: 10px 16px;
    border: 1.5px solid var(--osc-border);
    border-radius: var(--osc-radius-sm);
    font-family: var(--osc-font);
    font-size: var(--osc-font-size-sm);
    color: var(--osc-text);
    background: rgba(255, 255, 255, 0.8);
    transition: var(--osc-transition);
    line-height: 1.5;
}

.osc-input:focus,
.osc-select:focus,
.osc-textarea:focus {
    outline: none;
    border-color: var(--osc-primary-light);
    box-shadow: 0 0 0 3px rgba(91, 78, 229, 0.1);
    background: #fff;
}

.osc-input::placeholder {
    color: var(--osc-text-muted);
}

.osc-input.osc-input-error {
    border-color: var(--osc-danger);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.08);
}

.osc-input.osc-input-success {
    border-color: var(--osc-success);
    box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.08);
}

.osc-textarea {
    resize: vertical;
    min-height: 100px;
}

.osc-form-group {
    margin-bottom: var(--osc-space-lg);
}

.osc-form-label {
    display: block;
    font-size: var(--osc-font-size-sm);
    font-weight: 600;
    color: var(--osc-text);
    margin-bottom: 6px;
}

.osc-form-label .osc-required {
    color: var(--osc-danger);
    margin-left: 2px;
}

.osc-form-hint {
    font-size: var(--osc-font-size-xs);
    color: var(--osc-text-muted);
    margin-top: 4px;
}

.osc-form-error {
    font-size: var(--osc-font-size-xs);
    color: var(--osc-danger);
    margin-top: 4px;
}

.osc-input-group {
    position: relative;
    display: flex;
    align-items: stretch;
}

.osc-input-group .osc-input {
    border-radius: var(--osc-radius-sm) 0 0 var(--osc-radius-sm);
}

.osc-input-group .osc-input-addon {
    display: flex;
    align-items: center;
    padding: 0 14px;
    background: rgba(0, 0, 0, 0.03);
    border: 1.5px solid var(--osc-border);
    border-left: none;
    border-radius: 0 var(--osc-radius-sm) var(--osc-radius-sm) 0;
    color: var(--osc-text-muted);
    font-size: var(--osc-font-size-sm);
}

.osc-input-icon-left {
    position: relative;
}

.osc-input-icon-left .osc-input {
    padding-left: 40px;
}

.osc-input-icon-left > i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--osc-text-muted);
    font-size: 0.9rem;
    pointer-events: none;
}

/* Checkbox / Radio custom */
.osc-checkbox,
.osc-radio {
    display: flex;
    align-items: center;
    gap: var(--osc-space-sm);
    cursor: pointer;
    font-size: var(--osc-font-size-sm);
    color: var(--osc-text);
}

.osc-checkbox input,
.osc-radio input {
    width: 18px;
    height: 18px;
    accent-color: var(--osc-primary);
    cursor: pointer;
}

/* Toggle switch */
.osc-switch {
    position: relative;
    width: 44px;
    height: 24px;
    display: inline-block;
}

.osc-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.osc-switch .osc-switch-slider {
    position: absolute;
    inset: 0;
    background: var(--osc-border);
    border-radius: var(--osc-radius-full);
    cursor: pointer;
    transition: var(--osc-transition);
}

.osc-switch .osc-switch-slider::before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    left: 3px;
    top: 3px;
    background: #fff;
    border-radius: 50%;
    transition: var(--osc-spring);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.osc-switch input:checked + .osc-switch-slider {
    background: var(--osc-primary);
}

.osc-switch input:checked + .osc-switch-slider::before {
    transform: translateX(20px);
}

/* ============================================================
   15. MODAL
   ============================================================ */
.osc-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(30, 27, 58, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: var(--osc-z-modal);
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--osc-space-xl);
    animation: osc-fade-in 0.2s ease-out;
}

.osc-modal-overlay.active {
    display: flex;
}

.osc-modal {
    background: #fff;
    border-radius: var(--osc-radius);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
    width: 100%;
    max-width: 540px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    animation: osc-scale-in 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    overflow: hidden;
}

.osc-modal .osc-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--osc-space-lg) var(--osc-space-lg) var(--osc-space-md);
}

.osc-modal .osc-modal-header h3 {
    margin: 0;
    font-size: var(--osc-font-size-lg);
    font-weight: 700;
    color: var(--osc-text);
}

.osc-modal .osc-modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: rgba(0, 0, 0, 0.04);
    border-radius: var(--osc-radius-xs);
    font-size: 1.1rem;
    color: var(--osc-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--osc-transition);
}

.osc-modal .osc-modal-close:hover {
    background: rgba(220, 38, 38, 0.08);
    color: var(--osc-danger);
}

.osc-modal .osc-modal-body {
    padding: 0 var(--osc-space-lg) var(--osc-space-lg);
    overflow-y: auto;
    flex: 1;
}

.osc-modal .osc-modal-footer {
    padding: var(--osc-space-md) var(--osc-space-lg);
    border-top: 1px solid var(--osc-divider);
    display: flex;
    justify-content: flex-end;
    gap: var(--osc-space-sm);
}

.osc-modal.osc-modal-lg {
    max-width: 720px;
}

.osc-modal.osc-modal-sm {
    max-width: 400px;
}

/* ============================================================
   16. TOAST NOTIFICATIONS
   ============================================================ */
.osc-toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: var(--osc-z-toast);
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
    max-width: 380px;
    width: 100%;
}

.osc-toast {
    background: #fff;
    border-radius: var(--osc-radius-sm);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    padding: 14px 18px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    pointer-events: auto;
    animation: osc-toast-in 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    overflow: hidden;
    border-left: 4px solid var(--osc-info);
}

.osc-toast.osc-toast-removing {
    animation: osc-toast-out 0.3s ease-in forwards;
}

.osc-toast.osc-toast-success {
    border-left-color: var(--osc-success);
}

.osc-toast.osc-toast-error {
    border-left-color: var(--osc-danger);
}

.osc-toast.osc-toast-warning {
    border-left-color: var(--osc-warning);
}

.osc-toast.osc-toast-info {
    border-left-color: var(--osc-info);
}

.osc-toast .osc-toast-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    flex-shrink: 0;
    color: #fff;
}

.osc-toast.osc-toast-success .osc-toast-icon {
    background: var(--osc-success);
}

.osc-toast.osc-toast-error .osc-toast-icon {
    background: var(--osc-danger);
}

.osc-toast.osc-toast-warning .osc-toast-icon {
    background: var(--osc-warning);
}

.osc-toast.osc-toast-info .osc-toast-icon {
    background: var(--osc-info);
}

.osc-toast .osc-toast-content {
    flex: 1;
    min-width: 0;
}

.osc-toast .osc-toast-title {
    font-size: var(--osc-font-size-sm);
    font-weight: 600;
    color: var(--osc-text);
    margin-bottom: 2px;
}

.osc-toast .osc-toast-message {
    font-size: var(--osc-font-size-xs);
    color: var(--osc-text-secondary);
    line-height: 1.4;
}

.osc-toast .osc-toast-close {
    background: none;
    border: none;
    color: var(--osc-text-muted);
    cursor: pointer;
    font-size: 1rem;
    padding: 0;
    flex-shrink: 0;
    transition: var(--osc-transition);
}

.osc-toast .osc-toast-close:hover {
    color: var(--osc-text);
}

.osc-toast .osc-toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    background: currentColor;
    opacity: 0.2;
    animation: osc-progress-bar linear forwards;
}

.osc-toast.osc-toast-success .osc-toast-progress {
    color: var(--osc-success);
}

.osc-toast.osc-toast-error .osc-toast-progress {
    color: var(--osc-danger);
}

.osc-toast.osc-toast-warning .osc-toast-progress {
    color: var(--osc-warning);
}

.osc-toast.osc-toast-info .osc-toast-progress {
    color: var(--osc-info);
}

/* ============================================================
   17. DROPDOWN MENU
   ============================================================ */
.osc-dropdown {
    position: relative;
    display: inline-block;
}

.osc-dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 200px;
    background: #fff;
    border: 1px solid var(--osc-glass-border);
    border-radius: var(--osc-radius-sm);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    z-index: var(--osc-z-dropdown);
    display: none;
    overflow: hidden;
    animation: osc-fade-in-down 0.2s ease-out;
}

.osc-dropdown-menu.active {
    display: block;
}

.osc-dropdown-menu .osc-dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    font-size: var(--osc-font-size-sm);
    color: var(--osc-text);
    text-decoration: none;
    cursor: pointer;
    transition: var(--osc-transition);
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-family: var(--osc-font);
}

.osc-dropdown-menu .osc-dropdown-item:hover {
    background: rgba(91, 78, 229, 0.05);
    color: var(--osc-primary);
}

.osc-dropdown-menu .osc-dropdown-item i {
    width: 18px;
    text-align: center;
    color: var(--osc-text-muted);
    font-size: 0.85rem;
}

.osc-dropdown-menu .osc-dropdown-item:hover i {
    color: var(--osc-primary);
}

.osc-dropdown-menu .osc-dropdown-item.osc-danger {
    color: var(--osc-danger);
}

.osc-dropdown-menu .osc-dropdown-item.osc-danger:hover {
    background: rgba(220, 38, 38, 0.05);
}

.osc-dropdown-menu .osc-dropdown-item.osc-danger i {
    color: var(--osc-danger);
}

.osc-dropdown-divider {
    height: 1px;
    background: var(--osc-divider);
    margin: 4px 0;
}

.osc-dropdown-header {
    padding: 8px 16px;
    font-size: var(--osc-font-size-xs);
    font-weight: 600;
    color: var(--osc-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ============================================================
   18. SKELETON LOADING
   ============================================================ */
.osc-skeleton {
    background: linear-gradient(90deg, #f0f0f5 25%, #e8e8f0 37%, #f0f0f5 63%);
    background-size: 200% 100%;
    animation: osc-shimmer 1.5s ease-in-out infinite;
    border-radius: var(--osc-radius-xs);
}

.osc-skeleton-text {
    height: 14px;
    margin-bottom: 10px;
    border-radius: 6px;
}

.osc-skeleton-text:last-child {
    width: 70%;
}

.osc-skeleton-title {
    height: 22px;
    width: 45%;
    margin-bottom: 16px;
    border-radius: 6px;
}

.osc-skeleton-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
}

.osc-skeleton-image {
    width: 100%;
    height: 180px;
    border-radius: var(--osc-radius-sm);
}

.osc-skeleton-card {
    background: var(--osc-glass-bg);
    border: 1px solid var(--osc-glass-border);
    border-radius: var(--osc-radius);
    padding: var(--osc-space-lg);
}

.osc-skeleton-row {
    display: flex;
    align-items: center;
    gap: var(--osc-space-md);
    padding: 14px 0;
    border-bottom: 1px solid var(--osc-divider);
}

.osc-skeleton-row:last-child {
    border-bottom: none;
}

/* ============================================================
   19. PRODUCT CARD
   ============================================================ */
.osc-product-card {
    background: var(--osc-glass-bg);
    border: 1px solid var(--osc-glass-border);
    border-radius: var(--osc-radius);
    box-shadow: var(--osc-glass-shadow);
    backdrop-filter: blur(var(--osc-glass-blur));
    -webkit-backdrop-filter: blur(var(--osc-glass-blur));
    overflow: hidden;
    transition: var(--osc-transition);
    animation: osc-fade-in 0.45s ease-out both;
    position: relative;
}

.osc-product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(91, 78, 229, 0.1);
}

.osc-product-card .osc-product-image {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: #f5f5fa;
}

.osc-product-card .osc-product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.osc-product-card:hover .osc-product-image img {
    transform: scale(1.06);
}

.osc-product-card .osc-product-actions {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    opacity: 0;
    transform: translateX(10px);
    transition: var(--osc-spring);
}

.osc-product-card:hover .osc-product-actions {
    opacity: 1;
    transform: translateX(0);
}

.osc-product-card .osc-product-action-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    border: none;
    color: var(--osc-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    transition: var(--osc-spring);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.osc-product-card .osc-product-action-btn:hover {
    background: var(--osc-primary);
    color: #fff;
    transform: scale(1.1);
}

.osc-product-card .osc-product-action-btn.osc-wishlist-active {
    color: var(--osc-danger);
}

.osc-product-card .osc-product-action-btn.osc-wishlist-active:hover {
    background: var(--osc-danger);
    color: #fff;
}

.osc-product-card .osc-product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 10px;
    border-radius: var(--osc-radius-full);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.osc-product-card .osc-product-badge.osc-sale {
    background: var(--osc-danger);
    color: #fff;
}

.osc-product-card .osc-product-badge.osc-new {
    background: var(--osc-primary);
    color: #fff;
}

.osc-product-card .osc-product-badge.osc-hot {
    background: linear-gradient(135deg, #F59E0B, #EF4444);
    color: #fff;
}

.osc-product-card .osc-product-info {
    padding: var(--osc-space-md) var(--osc-space-lg) var(--osc-space-lg);
}

.osc-product-card .osc-product-category {
    font-size: var(--osc-font-size-xs);
    color: var(--osc-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.osc-product-card .osc-product-name {
    font-size: var(--osc-font-size-base);
    font-weight: 600;
    color: var(--osc-text);
    margin: 0 0 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

.osc-product-card .osc-product-name a {
    color: inherit;
    text-decoration: none;
    transition: var(--osc-transition);
}

.osc-product-card .osc-product-name a:hover {
    color: var(--osc-primary);
}

.osc-product-card .osc-product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 10px;
}

.osc-product-card .osc-add-to-cart {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--osc-primary), var(--osc-primary-light));
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    transition: var(--osc-spring);
    box-shadow: 0 2px 8px rgba(91, 78, 229, 0.25);
}

.osc-product-card .osc-add-to-cart:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 14px rgba(91, 78, 229, 0.35);
}

/* ============================================================
   20. CATEGORY CARD
   ============================================================ */
.osc-category-card {
    background: var(--osc-glass-bg);
    border: 1px solid var(--osc-glass-border);
    border-radius: var(--osc-radius);
    box-shadow: var(--osc-glass-shadow);
    backdrop-filter: blur(var(--osc-glass-blur));
    -webkit-backdrop-filter: blur(var(--osc-glass-blur));
    padding: var(--osc-space-xl) var(--osc-space-lg);
    text-align: center;
    transition: var(--osc-transition);
    cursor: pointer;
    text-decoration: none;
    display: block;
}

.osc-category-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 36px rgba(91, 78, 229, 0.1);
    border-color: rgba(91, 78, 229, 0.15);
}

.osc-category-card .osc-category-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--osc-radius-sm);
    background: linear-gradient(135deg, rgba(91, 78, 229, 0.08), rgba(91, 78, 229, 0.03));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: var(--osc-primary);
    margin: 0 auto var(--osc-space-md);
    transition: var(--osc-spring);
}

.osc-category-card:hover .osc-category-icon {
    background: linear-gradient(135deg, var(--osc-primary), var(--osc-primary-light));
    color: #fff;
    transform: scale(1.05);
}

.osc-category-card .osc-category-name {
    font-size: var(--osc-font-size-base);
    font-weight: 600;
    color: var(--osc-text);
    margin-bottom: 4px;
}

.osc-category-card .osc-category-count {
    font-size: var(--osc-font-size-xs);
    color: var(--osc-text-muted);
}

/* ============================================================
   21. CART ITEM
   ============================================================ */
.osc-cart-item {
    display: flex;
    align-items: center;
    gap: var(--osc-space-md);
    padding: var(--osc-space-md) 0;
    border-bottom: 1px solid var(--osc-divider);
    transition: var(--osc-transition);
}

.osc-cart-item:last-child {
    border-bottom: none;
}

.osc-cart-item .osc-cart-item-image {
    width: 80px;
    height: 80px;
    border-radius: var(--osc-radius-sm);
    overflow: hidden;
    flex-shrink: 0;
    background: #f5f5fa;
}

.osc-cart-item .osc-cart-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.osc-cart-item .osc-cart-item-details {
    flex: 1;
    min-width: 0;
}

.osc-cart-item .osc-cart-item-name {
    font-size: var(--osc-font-size-sm);
    font-weight: 600;
    color: var(--osc-text);
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.osc-cart-item .osc-cart-item-variant {
    font-size: var(--osc-font-size-xs);
    color: var(--osc-text-muted);
    margin-bottom: 8px;
}

.osc-cart-item .osc-cart-item-qty {
    display: flex;
    align-items: center;
    gap: 0;
    border: 1px solid var(--osc-border);
    border-radius: var(--osc-radius-xs);
    overflow: hidden;
    width: fit-content;
}

.osc-cart-item .osc-cart-item-qty button {
    width: 30px;
    height: 30px;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--osc-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    transition: var(--osc-transition);
}

.osc-cart-item .osc-cart-item-qty button:hover {
    background: rgba(91, 78, 229, 0.06);
    color: var(--osc-primary);
}

.osc-cart-item .osc-cart-item-qty span {
    width: 36px;
    text-align: center;
    font-size: var(--osc-font-size-sm);
    font-weight: 600;
    color: var(--osc-text);
    border-left: 1px solid var(--osc-border);
    border-right: 1px solid var(--osc-border);
    line-height: 30px;
}

.osc-cart-item .osc-cart-item-price {
    text-align: right;
    flex-shrink: 0;
}

.osc-cart-item .osc-cart-item-remove {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--osc-text-muted);
    cursor: pointer;
    border-radius: var(--osc-radius-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--osc-transition);
    flex-shrink: 0;
}

.osc-cart-item .osc-cart-item-remove:hover {
    background: rgba(220, 38, 38, 0.08);
    color: var(--osc-danger);
}

/* ============================================================
   22. PRICE DISPLAY
   ============================================================ */
.osc-price {
    display: flex;
    align-items: baseline;
    gap: 8px;
    flex-wrap: wrap;
}

.osc-price .osc-price-current {
    font-size: var(--osc-font-size-lg);
    font-weight: 700;
    color: var(--osc-text);
}

.osc-price .osc-price-original {
    font-size: var(--osc-font-size-sm);
    color: var(--osc-text-muted);
    text-decoration: line-through;
}

.osc-price .osc-price-discount {
    font-size: var(--osc-font-size-xs);
    font-weight: 700;
    color: var(--osc-success);
    background: var(--osc-success-light);
    padding: 2px 8px;
    border-radius: var(--osc-radius-full);
}

.osc-price-lg .osc-price-current {
    font-size: var(--osc-font-size-2xl);
}

/* ============================================================
   23. RATING
   ============================================================ */
.osc-rating {
    display: inline-flex;
    align-items: center;
    gap: 2px;
}

.osc-rating .osc-star {
    color: #E5E5F0;
    font-size: 0.85rem;
    transition: var(--osc-transition);
}

.osc-rating .osc-star.filled {
    color: #FBBF24;
}

.osc-rating .osc-star.half {
    position: relative;
    color: #E5E5F0;
}

.osc-rating .osc-star.half::before {
    content: '\f005';
    font-family: 'Font Awesome 6 Free', 'Font Awesome 5 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    color: #FBBF24;
    overflow: hidden;
    width: 50%;
}

.osc-rating .osc-rating-count {
    font-size: var(--osc-font-size-xs);
    color: var(--osc-text-muted);
    margin-left: 4px;
}

/* ============================================================
   24. BANNER / HERO
   ============================================================ */
.osc-banner {
    position: relative;
    border-radius: var(--osc-radius);
    overflow: hidden;
    min-height: 200px;
    display: flex;
    align-items: center;
}

.osc-banner img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.osc-banner .osc-banner-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(30, 27, 58, 0.7), rgba(91, 78, 229, 0.4));
}

.osc-banner .osc-banner-content {
    position: relative;
    z-index: 1;
    padding: var(--osc-space-2xl);
    color: #fff;
    max-width: 600px;
}

.osc-banner .osc-banner-content h2 {
    font-size: 2rem;
    font-weight: 800;
    margin: 0 0 var(--osc-space-sm);
    line-height: 1.2;
}

.osc-banner .osc-banner-content p {
    font-size: var(--osc-font-size-base);
    opacity: 0.9;
    margin: 0 0 var(--osc-space-lg);
    line-height: 1.5;
}

.osc-hero {
    width: 100%;
    min-height: 500px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.osc-hero img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.osc-hero .osc-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(30, 27, 58, 0.5) 0%, rgba(91, 78, 229, 0.3) 100%);
}

.osc-hero .osc-hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: #fff;
    padding: var(--osc-space-2xl);
    max-width: 700px;
}

.osc-hero .osc-hero-content h1 {
    font-size: 3rem;
    font-weight: 800;
    margin: 0 0 var(--osc-space-md);
    line-height: 1.15;
}

.osc-hero .osc-hero-content p {
    font-size: var(--osc-font-size-lg);
    opacity: 0.9;
    margin: 0 0 var(--osc-space-xl);
}

/* ============================================================
   25. PAGINATION
   ============================================================ */
.osc-pagination {
    display: flex;
    align-items: center;
    gap: 6px;
    justify-content: center;
}

.osc-pagination .osc-page-btn {
    min-width: 38px;
    height: 38px;
    border-radius: var(--osc-radius-xs);
    border: 1px solid var(--osc-border);
    background: #fff;
    color: var(--osc-text-secondary);
    font-size: var(--osc-font-size-sm);
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--osc-spring);
    font-family: var(--osc-font);
    padding: 0 10px;
}

.osc-pagination .osc-page-btn:hover {
    border-color: var(--osc-primary-light);
    color: var(--osc-primary);
    background: rgba(91, 78, 229, 0.04);
}

.osc-pagination .osc-page-btn.active {
    background: var(--osc-primary);
    border-color: var(--osc-primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(91, 78, 229, 0.25);
}

.osc-pagination .osc-page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.osc-pagination .osc-page-dots {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--osc-text-muted);
    font-size: 0.85rem;
    letter-spacing: 2px;
}

/* ============================================================
   26. TAGS / CHIPS
   ============================================================ */
.osc-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    border-radius: var(--osc-radius-full);
    font-size: var(--osc-font-size-xs);
    font-weight: 500;
    background: rgba(0, 0, 0, 0.04);
    color: var(--osc-text-secondary);
    border: 1px solid transparent;
    transition: var(--osc-transition);
}

.osc-tag.osc-tag-primary {
    background: rgba(91, 78, 229, 0.08);
    color: var(--osc-primary);
}

.osc-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: var(--osc-radius-full);
    font-size: var(--osc-font-size-sm);
    font-weight: 500;
    background: rgba(0, 0, 0, 0.04);
    color: var(--osc-text-secondary);
    border: 1px solid var(--osc-border);
    cursor: pointer;
    transition: var(--osc-transition);
}

.osc-chip:hover {
    border-color: var(--osc-primary-light);
    color: var(--osc-primary);
    background: rgba(91, 78, 229, 0.04);
}

.osc-chip.active {
    background: var(--osc-primary);
    border-color: var(--osc-primary);
    color: #fff;
}

.osc-chip .osc-chip-remove {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.1);
    color: inherit;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    transition: var(--osc-transition);
    padding: 0;
    line-height: 1;
}

.osc-chip .osc-chip-remove:hover {
    background: rgba(220, 38, 38, 0.2);
    color: var(--osc-danger);
}

/* ============================================================
   27. CONFIRM DIALOG
   ============================================================ */
.osc-confirm-overlay {
    position: fixed;
    inset: 0;
    background: rgba(30, 27, 58, 0.45);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: var(--osc-z-confirm);
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--osc-space-xl);
}

.osc-confirm-overlay.active {
    display: flex;
}

.osc-confirm-dialog {
    background: #fff;
    border-radius: var(--osc-radius);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    padding: var(--osc-space-xl) var(--osc-space-lg);
    max-width: 400px;
    width: 100%;
    text-align: center;
    animation: osc-bounce-in 0.4s ease-out;
}

.osc-confirm-dialog .osc-confirm-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--osc-warning-light);
    color: var(--osc-warning);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto var(--osc-space-md);
}

.osc-confirm-dialog .osc-confirm-title {
    font-size: var(--osc-font-size-lg);
    font-weight: 700;
    color: var(--osc-text);
    margin-bottom: var(--osc-space-sm);
}

.osc-confirm-dialog .osc-confirm-message {
    font-size: var(--osc-font-size-sm);
    color: var(--osc-text-secondary);
    margin-bottom: var(--osc-space-lg);
    line-height: 1.5;
}

.osc-confirm-dialog .osc-confirm-actions {
    display: flex;
    gap: var(--osc-space-sm);
    justify-content: center;
}

/* ============================================================
   28. AVATAR
   ============================================================ */
.osc-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--osc-font-size-sm);
    color: #fff;
    background: linear-gradient(135deg, var(--osc-primary), var(--osc-primary-light));
    flex-shrink: 0;
    border: 2px solid #fff;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

.osc-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.osc-avatar.osc-avatar-sm {
    width: 30px;
    height: 30px;
    font-size: var(--osc-font-size-xs);
}

.osc-avatar.osc-avatar-lg {
    width: 56px;
    height: 56px;
    font-size: var(--osc-font-size-lg);
}

.osc-avatar.osc-avatar-xl {
    width: 80px;
    height: 80px;
    font-size: var(--osc-font-size-xl);
}

.osc-avatar-group {
    display: flex;
}

.osc-avatar-group .osc-avatar {
    margin-left: -10px;
}

.osc-avatar-group .osc-avatar:first-child {
    margin-left: 0;
}

/* ============================================================
   29. PRODUCT GRID (Storefront)
   ============================================================ */
.osc-product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--osc-space-lg);
}

/* ============================================================
   30. FILTER SIDEBAR (Storefront)
   ============================================================ */
.osc-filter-sidebar {
    background: var(--osc-glass-bg);
    border: 1px solid var(--osc-glass-border);
    border-radius: var(--osc-radius);
    box-shadow: var(--osc-glass-shadow);
    backdrop-filter: blur(var(--osc-glass-blur));
    -webkit-backdrop-filter: blur(var(--osc-glass-blur));
    padding: var(--osc-space-lg);
    position: sticky;
    top: calc(var(--osc-header-height) + var(--osc-space-lg));
}

.osc-filter-sidebar .osc-filter-group {
    margin-bottom: var(--osc-space-lg);
    padding-bottom: var(--osc-space-lg);
    border-bottom: 1px solid var(--osc-divider);
}

.osc-filter-sidebar .osc-filter-group:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.osc-filter-sidebar .osc-filter-title {
    font-size: var(--osc-font-size-sm);
    font-weight: 700;
    color: var(--osc-text);
    margin-bottom: var(--osc-space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.osc-filter-sidebar .osc-filter-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 0;
    font-size: var(--osc-font-size-sm);
    color: var(--osc-text-secondary);
    cursor: pointer;
    transition: var(--osc-transition);
}

.osc-filter-sidebar .osc-filter-option:hover {
    color: var(--osc-primary);
}

.osc-filter-sidebar .osc-filter-count {
    font-size: var(--osc-font-size-xs);
    color: var(--osc-text-muted);
    background: rgba(0, 0, 0, 0.04);
    padding: 1px 8px;
    border-radius: var(--osc-radius-full);
}

/* Price range slider */
.osc-price-range {
    display: flex;
    align-items: center;
    gap: var(--osc-space-sm);
    margin-top: var(--osc-space-sm);
}

.osc-price-range input[type="range"] {
    flex: 1;
    accent-color: var(--osc-primary);
}

.osc-price-range .osc-price-value {
    font-size: var(--osc-font-size-xs);
    font-weight: 600;
    color: var(--osc-text);
    min-width: 50px;
    text-align: center;
}

/* Color swatches */
.osc-color-swatches {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.osc-color-swatch {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--osc-transition);
    position: relative;
}

.osc-color-swatch:hover {
    transform: scale(1.15);
}

.osc-color-swatch.active {
    border-color: var(--osc-primary);
    box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--osc-primary);
}

/* ============================================================
   31. CART SUMMARY
   ============================================================ */
.osc-cart-summary {
    background: var(--osc-glass-bg);
    border: 1px solid var(--osc-glass-border);
    border-radius: var(--osc-radius);
    box-shadow: var(--osc-glass-shadow);
    backdrop-filter: blur(var(--osc-glass-blur));
    -webkit-backdrop-filter: blur(var(--osc-glass-blur));
    padding: var(--osc-space-lg);
    position: sticky;
    top: calc(var(--osc-header-height) + var(--osc-space-lg));
}

.osc-cart-summary .osc-summary-title {
    font-size: var(--osc-font-size-lg);
    font-weight: 700;
    color: var(--osc-text);
    margin-bottom: var(--osc-space-lg);
    padding-bottom: var(--osc-space-md);
    border-bottom: 1px solid var(--osc-divider);
}

.osc-cart-summary .osc-summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    font-size: var(--osc-font-size-sm);
}

.osc-cart-summary .osc-summary-row .osc-summary-label {
    color: var(--osc-text-secondary);
}

.osc-cart-summary .osc-summary-row .osc-summary-value {
    font-weight: 600;
    color: var(--osc-text);
}

.osc-cart-summary .osc-summary-row.osc-discount .osc-summary-value {
    color: var(--osc-success);
}

.osc-cart-summary .osc-summary-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--osc-space-md) 0 0;
    margin-top: var(--osc-space-md);
    border-top: 2px solid var(--osc-text);
    font-size: var(--osc-font-size-lg);
    font-weight: 700;
    color: var(--osc-text);
}

.osc-cart-summary .osc-coupon-input {
    display: flex;
    gap: var(--osc-space-sm);
    margin-top: var(--osc-space-lg);
}

.osc-cart-summary .osc-coupon-input .osc-input {
    flex: 1;
}

/* ============================================================
   32. CHECKOUT STEPS
   ============================================================ */
.osc-checkout-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--osc-space-xl) 0;
    gap: 0;
}

.osc-checkout-steps .osc-step {
    display: flex;
    align-items: center;
    gap: var(--osc-space-sm);
    position: relative;
}

.osc-checkout-steps .osc-step-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.05);
    color: var(--osc-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--osc-font-size-sm);
    font-weight: 700;
    transition: var(--osc-spring);
    flex-shrink: 0;
}

.osc-checkout-steps .osc-step-label {
    font-size: var(--osc-font-size-sm);
    font-weight: 500;
    color: var(--osc-text-muted);
    white-space: nowrap;
    transition: var(--osc-transition);
}

.osc-checkout-steps .osc-step-connector {
    width: 60px;
    height: 2px;
    background: var(--osc-border);
    margin: 0 var(--osc-space-md);
    transition: var(--osc-transition);
    flex-shrink: 0;
}

.osc-checkout-steps .osc-step.active .osc-step-number {
    background: var(--osc-primary);
    color: #fff;
    box-shadow: 0 2px 10px rgba(91, 78, 229, 0.3);
}

.osc-checkout-steps .osc-step.active .osc-step-label {
    color: var(--osc-primary);
    font-weight: 600;
}

.osc-checkout-steps .osc-step.completed .osc-step-number {
    background: var(--osc-success);
    color: #fff;
}

.osc-checkout-steps .osc-step.completed .osc-step-label {
    color: var(--osc-success);
}

.osc-checkout-steps .osc-step.completed + .osc-step-connector {
    background: var(--osc-success);
}

/* ============================================================
   33. ORDER TIMELINE
   ============================================================ */
.osc-order-timeline {
    position: relative;
    padding-left: 30px;
}

.osc-order-timeline::before {
    content: '';
    position: absolute;
    left: 11px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--osc-border);
}

.osc-order-timeline .osc-timeline-item {
    position: relative;
    padding-bottom: var(--osc-space-lg);
    padding-left: var(--osc-space-md);
}

.osc-order-timeline .osc-timeline-item:last-child {
    padding-bottom: 0;
}

.osc-order-timeline .osc-timeline-dot {
    position: absolute;
    left: -24px;
    top: 2px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--osc-border);
    border: 3px solid #fff;
    box-shadow: 0 0 0 2px var(--osc-border);
    z-index: 1;
}

.osc-order-timeline .osc-timeline-item.active .osc-timeline-dot {
    background: var(--osc-primary);
    box-shadow: 0 0 0 2px var(--osc-primary);
    animation: osc-pulse 2s infinite;
}

.osc-order-timeline .osc-timeline-item.completed .osc-timeline-dot {
    background: var(--osc-success);
    box-shadow: 0 0 0 2px var(--osc-success);
}

.osc-order-timeline .osc-timeline-title {
    font-size: var(--osc-font-size-sm);
    font-weight: 600;
    color: var(--osc-text);
    margin-bottom: 2px;
}

.osc-order-timeline .osc-timeline-date {
    font-size: var(--osc-font-size-xs);
    color: var(--osc-text-muted);
    margin-bottom: 4px;
}

.osc-order-timeline .osc-timeline-desc {
    font-size: var(--osc-font-size-xs);
    color: var(--osc-text-secondary);
    line-height: 1.4;
}

/* ============================================================
   34. LOADING SPINNER
   ============================================================ */
.osc-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--osc-border);
    border-top-color: var(--osc-primary);
    border-radius: 50%;
    animation: osc-spin 0.7s linear infinite;
}

.osc-spinner-sm {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.osc-spinner-lg {
    width: 48px;
    height: 48px;
    border-width: 4px;
}

.osc-page-loader {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--osc-space-2xl);
    flex-direction: column;
    gap: var(--osc-space-md);
}

.osc-page-loader .osc-loader-text {
    font-size: var(--osc-font-size-sm);
    color: var(--osc-text-muted);
}

/* ============================================================
   35. EMPTY STATE
   ============================================================ */
.osc-empty-state {
    text-align: center;
    padding: var(--osc-space-2xl);
}

.osc-empty-state .osc-empty-icon {
    font-size: 3rem;
    color: var(--osc-text-muted);
    margin-bottom: var(--osc-space-md);
    opacity: 0.5;
}

.osc-empty-state .osc-empty-title {
    font-size: var(--osc-font-size-lg);
    font-weight: 600;
    color: var(--osc-text);
    margin-bottom: var(--osc-space-sm);
}

.osc-empty-state .osc-empty-desc {
    font-size: var(--osc-font-size-sm);
    color: var(--osc-text-secondary);
    margin-bottom: var(--osc-space-lg);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================================
   36. TABS
   ============================================================ */
.osc-tabs {
    display: flex;
    border-bottom: 2px solid var(--osc-divider);
    gap: 0;
    overflow-x: auto;
}

.osc-tabs .osc-tab {
    padding: 12px 20px;
    font-size: var(--osc-font-size-sm);
    font-weight: 500;
    color: var(--osc-text-secondary);
    cursor: pointer;
    border: none;
    background: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: var(--osc-transition);
    white-space: nowrap;
    font-family: var(--osc-font);
}

.osc-tabs .osc-tab:hover {
    color: var(--osc-primary);
}

.osc-tabs .osc-tab.active {
    color: var(--osc-primary);
    border-bottom-color: var(--osc-primary);
    font-weight: 600;
}

.osc-tab-content {
    display: none;
    padding: var(--osc-space-lg) 0;
    animation: osc-fade-in 0.3s ease-out;
}

.osc-tab-content.active {
    display: block;
}

/* ============================================================
   37. TOOLTIP (CSS only)
   ============================================================ */
[data-osc-tooltip] {
    position: relative;
}

[data-osc-tooltip]::after {
    content: attr(data-osc-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) scale(0.9);
    background: var(--osc-text);
    color: #fff;
    padding: 5px 12px;
    border-radius: var(--osc-radius-xs);
    font-size: var(--osc-font-size-xs);
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: var(--osc-spring);
    z-index: 50;
}

[data-osc-tooltip]:hover::after {
    opacity: 1;
    transform: translateX(-50%) scale(1);
}

/* ============================================================
   38. SCROLLBAR STYLING
   ============================================================ */
.osc-scrollbar::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.osc-scrollbar::-webkit-scrollbar-track {
    background: transparent;
}

.osc-scrollbar::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: var(--osc-radius-full);
}

.osc-scrollbar::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.2);
}

/* ============================================================
   39. UTILITY CLASSES
   ============================================================ */
.osc-text-primary { color: var(--osc-primary); }
.osc-text-accent { color: var(--osc-accent); }
.osc-text-success { color: var(--osc-success); }
.osc-text-warning { color: var(--osc-warning); }
.osc-text-danger { color: var(--osc-danger); }
.osc-text-info { color: var(--osc-info); }
.osc-text-muted { color: var(--osc-text-muted); }
.osc-text-secondary { color: var(--osc-text-secondary); }

.osc-bg-primary { background: var(--osc-primary); }
.osc-bg-success-light { background: var(--osc-success-light); }
.osc-bg-warning-light { background: var(--osc-warning-light); }
.osc-bg-danger-light { background: var(--osc-danger-light); }
.osc-bg-info-light { background: var(--osc-info-light); }

.osc-fw-400 { font-weight: 400; }
.osc-fw-500 { font-weight: 500; }
.osc-fw-600 { font-weight: 600; }
.osc-fw-700 { font-weight: 700; }

.osc-d-flex { display: flex; }
.osc-d-grid { display: grid; }
.osc-d-none { display: none; }
.osc-d-block { display: block; }
.osc-d-inline-flex { display: inline-flex; }

.osc-align-center { align-items: center; }
.osc-align-start { align-items: flex-start; }
.osc-align-end { align-items: flex-end; }
.osc-justify-center { justify-content: center; }
.osc-justify-between { justify-content: space-between; }
.osc-justify-end { justify-content: flex-end; }

.osc-flex-1 { flex: 1; }
.osc-flex-wrap { flex-wrap: wrap; }
.osc-flex-col { flex-direction: column; }

.osc-gap-xs { gap: var(--osc-space-xs); }
.osc-gap-sm { gap: var(--osc-space-sm); }
.osc-gap-md { gap: var(--osc-space-md); }
.osc-gap-lg { gap: var(--osc-space-lg); }
.osc-gap-xl { gap: var(--osc-space-xl); }

.osc-mt-0 { margin-top: 0; }
.osc-mt-sm { margin-top: var(--osc-space-sm); }
.osc-mt-md { margin-top: var(--osc-space-md); }
.osc-mt-lg { margin-top: var(--osc-space-lg); }
.osc-mt-xl { margin-top: var(--osc-space-xl); }
.osc-mb-0 { margin-bottom: 0; }
.osc-mb-sm { margin-bottom: var(--osc-space-sm); }
.osc-mb-md { margin-bottom: var(--osc-space-md); }
.osc-mb-lg { margin-bottom: var(--osc-space-lg); }
.osc-mb-xl { margin-bottom: var(--osc-space-xl); }

.osc-p-0 { padding: 0; }
.osc-p-sm { padding: var(--osc-space-sm); }
.osc-p-md { padding: var(--osc-space-md); }
.osc-p-lg { padding: var(--osc-space-lg); }
.osc-p-xl { padding: var(--osc-space-xl); }

.osc-text-center { text-align: center; }
.osc-text-right { text-align: right; }
.osc-text-left { text-align: left; }

.osc-w-100 { width: 100%; }
.osc-h-100 { height: 100%; }
.osc-overflow-hidden { overflow: hidden; }
.osc-overflow-auto { overflow: auto; }
.osc-relative { position: relative; }
.osc-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.osc-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ============================================================
   40. SIDEBAR OVERLAY (mobile)
   ============================================================ */
.osc-sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(30, 27, 58, 0.4);
    z-index: calc(var(--osc-z-sidebar) - 1);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}

.osc-sidebar-overlay.active {
    display: block;
}

/* ============================================================
   41. RESPONSIVE BREAKPOINTS
   ============================================================ */

/* Tablet: max 1024px */
@media (max-width: 1024px) {
    .osc-stat-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .osc-product-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .osc-checkout-steps .osc-step-label {
        display: none;
    }

    .osc-checkout-steps .osc-step-connector {
        width: 40px;
    }
}

/* Mobile: max 768px */
@media (max-width: 768px) {
    :root {
        --osc-space-lg: 18px;
        --osc-space-xl: 24px;
    }

    .osc-sidebar {
        transform: translateX(-100%);
        z-index: var(--osc-z-sidebar);
        box-shadow: none;
    }

    .osc-sidebar.open {
        transform: translateX(0);
        box-shadow: 10px 0 40px rgba(0, 0, 0, 0.1);
    }

    .osc-header {
        margin-left: 0;
        padding: 0 var(--osc-space-md);
    }

    .osc-header .osc-hamburger {
        display: flex;
    }

    .osc-header .osc-header-search {
        display: none;
    }

    .osc-main {
        margin-left: 0;
        padding: var(--osc-space-md);
    }

    .osc-stat-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--osc-space-md);
    }

    .osc-product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--osc-space-md);
    }

    .osc-modal {
        margin: var(--osc-space-md);
        max-height: calc(100vh - 32px);
        border-radius: var(--osc-radius-sm);
    }

    .osc-toast-container {
        left: 12px;
        right: 12px;
        max-width: none;
    }

    .osc-page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .osc-table-wrapper {
        border-radius: var(--osc-radius-sm);
    }

    .osc-table-wrapper .osc-table-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .osc-glass-card {
        border-radius: var(--osc-radius-sm);
        padding: var(--osc-space-md);
    }

    .osc-hero .osc-hero-content h1 {
        font-size: 2rem;
    }

    .osc-banner .osc-banner-content h2 {
        font-size: 1.5rem;
    }

    .osc-cart-item {
        flex-wrap: wrap;
    }

    .osc-filter-sidebar {
        position: static;
    }

    .osc-cart-summary {
        position: static;
    }
}

/* Small Mobile: max 480px */
@media (max-width: 480px) {
    .osc-stat-grid {
        grid-template-columns: 1fr;
    }

    .osc-product-grid {
        grid-template-columns: 1fr;
    }

    .osc-stat-card .osc-stat-value {
        font-size: var(--osc-font-size-xl);
    }

    .osc-hero {
        min-height: 350px;
    }

    .osc-hero .osc-hero-content h1 {
        font-size: 1.6rem;
    }

    .osc-checkout-steps .osc-step-connector {
        width: 24px;
        margin: 0 var(--osc-space-sm);
    }

    .osc-confirm-dialog {
        margin: var(--osc-space-md);
    }
}

/* ============================================================
   42. PRINT STYLES
   ============================================================ */
@media print {
    .osc-sidebar,
    .osc-header,
    .osc-toast-container,
    .osc-modal-overlay,
    .osc-confirm-overlay {
        display: none !important;
    }

    .osc-main {
        margin-left: 0 !important;
        padding: 0 !important;
    }

    .osc-glass-card {
        box-shadow: none;
        border: 1px solid #ddd;
        backdrop-filter: none;
    }

    body.osc-body {
        background: #fff;
    }
}

/* ============================================================
   43. DARK MODE SUPPORT (via class toggle)
   ============================================================ */
.osc-dark {
    --osc-body-bg: #0F0E17;
    --osc-text: #FFFFFE;
    --osc-text-secondary: #A7A9BE;
    --osc-text-muted: #6B6D80;
    --osc-border: #2A2A3C;
    --osc-divider: rgba(255, 255, 255, 0.06);
    --osc-glass-bg: rgba(22, 21, 35, 0.85);
    --osc-glass-border: rgba(255, 255, 255, 0.08);
    --osc-glass-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

.osc-dark .osc-sidebar {
    background: rgba(22, 21, 35, 0.95);
    border-right-color: rgba(255, 255, 255, 0.06);
}

.osc-dark .osc-header {
    background: rgba(22, 21, 35, 0.9);
    border-bottom-color: rgba(255, 255, 255, 0.06);
}

.osc-dark .osc-header .osc-header-search input {
    background: rgba(255, 255, 255, 0.05);
    color: var(--osc-text);
}

.osc-dark .osc-header .osc-header-search input:focus {
    background: rgba(255, 255, 255, 0.08);
}

.osc-dark .osc-table-wrapper table thead th {
    background: rgba(255, 255, 255, 0.02);
}

.osc-dark .osc-modal {
    background: #1A1930;
}

.osc-dark .osc-toast {
    background: #1E1D32;
}

.osc-dark .osc-confirm-dialog {
    background: #1A1930;
}

.osc-dark .osc-dropdown-menu {
    background: #1E1D32;
    border-color: rgba(255, 255, 255, 0.08);
}

.osc-dark .osc-input,
.osc-dark .osc-select,
.osc-dark .osc-textarea {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--osc-border);
    color: var(--osc-text);
}

.osc-dark .osc-input:focus,
.osc-dark .osc-select:focus,
.osc-dark .osc-textarea:focus {
    background: rgba(255, 255, 255, 0.08);
}

.osc-dark .osc-skeleton {
    background: linear-gradient(90deg, #1A1930 25%, #252440 37%, #1A1930 63%);
    background-size: 200% 100%;
}

.osc-dark .osc-btn-outline {
    border-color: var(--osc-border);
    color: var(--osc-text-secondary);
}

.osc-dark .osc-product-card .osc-product-image {
    background: #1A1930;
}

.osc-dark .osc-nav-item:hover {
    background: rgba(91, 78, 229, 0.08);
}

.osc-dark .osc-nav-item.active {
    background: rgba(91, 78, 229, 0.12);
}

/* ============================================================
   END OF FILE
   ============================================================ */