/* ==========================================================================
   SHOCKED & WOWED - E-COMMERCE DESIGN SYSTEM (ShopEase)
   Curated harmony of colors, sleek dark/light mode variables, 
   glassmorphism, micro-animations, and full responsive support.
   ========================================================================== */

/* Modern CSS Variable Theme Mapping */
:root {
    --primary: hsl(242, 85%, 60%);
    --primary-hover: hsl(242, 85%, 55%);
    --primary-rgb: 99, 102, 241;
    --accent: hsl(38, 92%, 50%);
    --accent-hover: hsl(38, 92%, 45%);
    --bg-main: #f8fafc;
    --bg-gradient: radial-gradient(circle at top left, rgba(99, 102, 241, 0.1), transparent 25%),
                   radial-gradient(circle at bottom right, rgba(245, 158, 11, 0.08), transparent 25%),
                   linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
    --surface: rgba(255, 255, 255, 0.75);
    --surface-solid: #ffffff;
    --border: rgba(15, 23, 42, 0.08);
    --text: #0f172a;
    --text-muted: #64748b;
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --error: #ef4444;
    --error-bg: rgba(239, 68, 68, 0.1);
    --shadow: 0 15px 35px -5px rgba(15, 23, 42, 0.08), 0 5px 15px -5px rgba(15, 23, 42, 0.04);
    --shadow-hover: 0 25px 50px -12px rgba(15, 23, 42, 0.16);
    --glass-blur: blur(16px);
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --nav-height: 80px;
}

/* Dark Theme Variables override */
html[data-theme="dark"] {
    --primary: hsl(250, 95%, 68%);
    --primary-hover: hsl(250, 95%, 75%);
    --primary-rgb: 139, 92, 246;
    --accent: hsl(45, 100%, 55%);
    --accent-hover: hsl(45, 100%, 65%);
    --bg-main: #0b0b14;
    --bg-gradient: radial-gradient(circle at 15% 20%, rgba(139, 92, 246, 0.15), transparent 30%),
                   radial-gradient(circle at 85% 80%, rgba(245, 158, 11, 0.08), transparent 30%),
                   linear-gradient(180deg, #09090f 0%, #11111f 100%);
    --surface: rgba(18, 18, 36, 0.65);
    --surface-solid: #15152a;
    --border: rgba(255, 255, 255, 0.07);
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --success: #34d399;
    --success-bg: rgba(52, 211, 153, 0.15);
    --warning: #fbbf24;
    --warning-bg: rgba(251, 191, 36, 0.15);
    --error: #f87171;
    --error-bg: rgba(248, 113, 113, 0.15);
    --shadow: 0 15px 35px -5px rgba(0, 0, 0, 0.4), 0 5px 15px -5px rgba(0, 0, 0, 0.2);
    --shadow-hover: 0 30px 60px -10px rgba(0, 0, 0, 0.6);
}

/* Global Reset & Base */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    background: var(--bg-gradient);
    background-color: var(--bg-main);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    transition: background-color 0.4s ease, color 0.4s ease;
}

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--text);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

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

/* Structured Containers */
.container {
    width: min(1200px, 100% - 2.5rem);
    margin: 0 auto;
    padding: 1.5rem 0;
}

/* Glassmorphism Header */
.topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    height: var(--nav-height);
    background: var(--surface);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.03);
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.header-inner {
    width: min(1200px, 100% - 2.5rem);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
}

.brand {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--text);
    letter-spacing: -0.04em;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: transform 0.2s ease;
}

.brand:hover {
    transform: scale(1.02);
}

/* Smart Search bar */
.search-form {
    display: flex;
    flex: 1;
    max-width: 480px;
    background: var(--surface-solid);
    border: 1.5px solid var(--border);
    border-radius: 999px;
    overflow: hidden;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
    transition: var(--transition);
}

.search-form:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.15);
}

.search-form input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 0.75rem 1.25rem;
    font-size: 0.95rem;
    color: var(--text);
    outline: none;
}

.search-form button {
    background: var(--primary);
    border: none;
    color: #fff;
    padding: 0 1.25rem;
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
}

.search-form button:hover {
    background: var(--primary-hover);
}

/* Nav links styling */
.nav-links {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.1rem;
    border-radius: 999px;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text);
    background: transparent;
    border: 1px solid transparent;
}

.nav-link:hover, .nav-link.active {
    background: rgba(var(--primary-rgb), 0.08);
    color: var(--primary);
}

.nav-link i {
    font-size: 1.05rem;
}

/* Badge values */
.badge {
    background: var(--accent);
    color: #0f172a;
    font-size: 0.72rem;
    font-weight: 800;
    border-radius: 999px;
    padding: 0.15rem 0.5rem;
    line-height: 1.2;
    transition: var(--transition);
}

.nav-link:hover .badge {
    transform: translateY(-2px) scale(1.05);
}

/* Theme Selector Styles */
.theme-toggle-btn {
    background: var(--surface-solid);
    border: 1.5px solid var(--border);
    color: var(--text);
    width: 42px;
    height: 42px;
    border-radius: 50%;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.theme-toggle-btn:hover {
    background: rgba(var(--primary-rgb), 0.08);
    border-color: var(--primary);
    transform: rotate(20deg) scale(1.05);
}

/* Home Page Grid Layout */
.site-content {
    flex: 1;
    padding-top: 1rem;
    padding-bottom: 4rem;
}

/* Premium Gradients Hero Panel */
.hero-home {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
    gap: 2.5rem;
    padding: 4rem 3rem;
    border-radius: var(--radius-lg);
    color: #ffffff;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-hover);
    margin-bottom: 3rem;
}

.hero-home::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.95) 0%, rgba(124, 58, 237, 0.95) 100%);
    z-index: 0;
}

.hero-home > * {
    position: relative;
    z-index: 1;
}

.eyebrow {
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1rem;
}

.hero-home h1 {
    font-size: clamp(2.2rem, 4vw, 3.4rem);
    line-height: 1.1;
    color: #ffffff;
    margin-bottom: 1.25rem;
}

.hero-description {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 2rem;
    max-width: 540px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

.hero-panel {
    display: flex;
    justify-content: center;
}

.hero-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    padding: 2rem;
    max-width: 320px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    transition: transform 0.35s ease;
}

.hero-card:hover {
    transform: translateY(-8px);
}

.hero-card-title {
    font-size: 0.72rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.hero-card h2 {
    color: #ffffff;
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

.hero-card p {
    font-size: 0.88rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 1.25rem;
}

.hero-price {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--accent);
}

/* Button & Action controls */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.85rem 1.75rem;
    font-size: 0.95rem;
    font-weight: 700;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(var(--primary-rgb), 0.2);
    background: var(--primary);
    color: #ffffff;
}

.btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(var(--primary-rgb), 0.35);
}

.btn-secondary {
    background: var(--surface-solid);
    color: var(--text);
    border: 1.5px solid var(--border);
    box-shadow: var(--shadow);
}

.btn-secondary:hover {
    background: rgba(var(--primary-rgb), 0.05);
    border-color: var(--primary);
    box-shadow: var(--shadow);
}

/* Dashboard Filter Sidebar Panel */
.grid-section {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
    align-items: start;
}

.aside-panel {
    background: var(--surface);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.75rem;
    box-shadow: var(--shadow);
}

.filters-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.filters-header h2 {
    font-size: 1.25rem;
}

.clear-filter {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary);
}

.category-list {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.category-chip {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.1rem;
    border-radius: var(--radius-sm);
    background: var(--surface-solid);
    border: 1px solid var(--border);
    color: var(--text);
    font-weight: 600;
    font-size: 0.92rem;
}

.category-chip:hover, .category-chip.active {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
}

.filter-summary {
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border);
    font-size: 0.88rem;
    color: var(--text-muted);
}

/* Modern Dynamic Product Grid Cards */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.75rem;
}

.product-card {
    background: var(--surface-solid);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(var(--primary-rgb), 0.25);
}

.product-image {
    aspect-ratio: 16 / 12;
    overflow: hidden;
    position: relative;
    background: linear-gradient(180deg, rgba(var(--primary-rgb), 0.05) 0%, rgba(var(--primary-rgb), 0.01) 100%);
    border-bottom: 1px solid var(--border);
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

/* Absolute heart Wishlist dynamic overlay */
.wishlist-heart-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 10;
    background: var(--surface-solid);
    border: 1px solid var(--border);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1rem;
    color: #cbd5e1;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.wishlist-heart-btn:hover {
    transform: scale(1.1);
}

.wishlist-heart-btn.active {
    color: #ef4444;
    background: #fef2f2;
    border-color: #fca5a5;
    animation: heartBeat 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes heartBeat {
    0% { transform: scale(1); }
    30% { transform: scale(1.3); }
    60% { transform: scale(0.9); }
    100% { transform: scale(1); }
}

.product-body {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    flex: 1;
    gap: 0.75rem;
    min-height: 200px;
}

.product-category {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--primary);
}

.product-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.product-copy {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.5;
    height: 3rem;
}

.product-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
}

.price {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text);
}

.product-card .product-actions {
    display: flex;
    gap: 0.5rem;
}

.product-card .product-actions .btn {
    padding: 0.5rem 0.95rem;
    font-size: 0.82rem;
}

/* Empty listings styling */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--surface);
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    grid-column: 1 / -1;
}

.empty-state h2 {
    margin-bottom: 0.75rem;
}

.empty-state p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

/* Messages & Toast Notifications */
.messages {
    display: grid;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.message {
    padding: 1rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.92rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: var(--shadow);
}

.message.success {
    background: var(--success-bg);
    border-left: 4px solid var(--success);
    color: var(--success);
}

.message.warning {
    background: var(--warning-bg);
    border-left: 4px solid var(--warning);
    color: var(--warning);
}

.message.error {
    background: var(--error-bg);
    border-left: 4px solid var(--error);
    color: var(--error);
}

/* Toast Stack dynamic positioning */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 360px;
    width: 100%;
}

.toast {
    background: var(--surface-solid);
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--text);
    font-weight: 600;
    font-size: 0.9rem;
    transform: translateX(110%);
    animation: toastIn 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

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

.toast-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.9rem;
    margin-left: 0.75rem;
}

@keyframes toastIn {
    to { transform: translateX(0); }
}

@keyframes toastOut {
    to { transform: translateX(110%); opacity: 0; }
}

/* Product Detail Page Split-Pane */
.detail-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
    align-items: start;
}

.detail-image {
    background: var(--surface-solid);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.detail-image img {
    width: 100%;
    aspect-ratio: 16 / 13;
    object-fit: cover;
}

.detail-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.detail-info h1 {
    font-size: 2.2rem;
}

.detail-price {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text);
}

.product-stock {
    font-size: 0.92rem;
}

.in-stock {
    color: var(--success);
    font-weight: 700;
}

.out-of-stock {
    color: var(--error);
    font-weight: 700;
}

/* Spec panels and rating bubbles */
.product-meta-specs {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 1.25rem 0;
    display: grid;
    gap: 0.75rem;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
}

.spec-label {
    color: var(--text-muted);
    font-weight: 600;
}

.spec-value {
    color: var(--text);
    font-weight: 700;
}

.rating-stars {
    color: #eab308;
    display: flex;
    gap: 0.25rem;
    align-items: center;
    font-size: 0.9rem;
}

.rating-stars span {
    color: var(--text-muted);
    font-weight: 600;
    margin-left: 0.5rem;
}

.product-options {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.options-label {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text);
}

.bubble-selectors {
    display: flex;
    gap: 0.5rem;
}

.bubble-btn {
    border: 1.5px solid var(--border);
    background: var(--surface-solid);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    transition: var(--transition);
}

.bubble-btn:hover, .bubble-btn.active {
    border-color: var(--primary);
    background: rgba(var(--primary-rgb), 0.05);
    color: var(--primary);
}

/* Related products view */
.related-products {
    margin-top: 5rem;
}

.section-heading {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.5rem;
}

/* Cart view Overhaul */
.cart-grid {
    display: grid;
    grid-template-columns: 1.4fr 0.6fr;
    gap: 2rem;
    align-items: start;
}

.cart-table {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--surface-solid);
    box-shadow: var(--shadow);
}

.cart-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr auto;
    gap: 1.5rem;
    align-items: center;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

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

.cart-row.cart-header {
    background: rgba(var(--primary-rgb), 0.02);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.cart-product {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.cart-product img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.cart-product-info h4 {
    font-size: 1.05rem;
    font-weight: 700;
}

.quantity-form {
    display: flex;
    align-items: center;
    border: 1.5px solid var(--border);
    border-radius: 999px;
    padding: 0.25rem 0.5rem;
    max-width: 120px;
    background: var(--surface-solid);
}

.quantity-form button {
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.quantity-form button:hover {
    background: rgba(var(--primary-rgb), 0.08);
    color: var(--primary);
}

.quantity-form input {
    border: none;
    background: transparent;
    text-align: center;
    width: 40px;
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text);
    outline: none;
}

.cart-row .col-total {
    font-weight: 800;
    color: var(--text);
}

.remove-cart-btn {
    background: transparent;
    border: none;
    color: var(--error);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
}

.remove-cart-btn:hover {
    background: var(--error-bg);
    transform: scale(1.05);
}

/* Sticky floating Summary Panel */
.order-summary-panel {
    position: sticky;
    top: calc(var(--nav-height) + 1.5rem);
    background: var(--surface);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.order-summary-panel h2 {
    font-size: 1.4rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.75rem;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.95rem;
}

.summary-row.total {
    border-top: 1px solid var(--border);
    padding-top: 1rem;
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--text);
}

/* Wizard step timeline indicator */
.checkout-steps {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 600px;
    margin: 0 auto 3rem auto;
    position: relative;
}

.checkout-steps::before {
    content: '';
    position: absolute;
    height: 3px;
    background: var(--border);
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    z-index: 0;
}

.step-item {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.step-badge {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--surface-solid);
    border: 3px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    transition: var(--transition);
    color: var(--text-muted);
}

.step-label {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-muted);
}

.step-item.active .step-badge {
    border-color: var(--primary);
    background: var(--primary);
    color: #ffffff;
    box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.2);
}

.step-item.active .step-label {
    color: var(--primary);
}

.step-item.completed .step-badge {
    border-color: var(--success);
    background: var(--success);
    color: #ffffff;
}

/* Premium styled Inputs */
.checkout-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2.5rem;
    align-items: start;
}

.checkout-card {
    background: var(--surface-solid);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow);
}

.checkout-card h3 {
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    margin-bottom: 1.5rem;
}

.form-group label {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text);
}

.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    background: var(--bg-main);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.85rem 1.1rem;
    color: var(--text);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition);
}

.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.12);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

/* Order visual tracking bar */
.order-tracking-wrapper {
    background: var(--surface-solid);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.tracking-bar {
    display: flex;
    justify-content: space-between;
    position: relative;
    margin: 1.5rem 0;
}

.tracking-bar::before {
    content: '';
    position: absolute;
    height: 4px;
    background: var(--border);
    top: 20px;
    left: 20px;
    right: 20px;
    transform: translateY(-50%);
    z-index: 0;
}

.tracking-bar-progress {
    position: absolute;
    height: 4px;
    background: var(--success);
    top: 20px;
    left: 20px;
    transform: translateY(-50%);
    z-index: 0;
    width: 0%;
    transition: width 0.6s ease;
}

.tracking-node {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.tracking-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--surface-solid);
    border: 3px solid var(--border);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: var(--transition);
}

.tracking-node.completed .tracking-icon {
    background: var(--success);
    border-color: var(--success);
    color: #ffffff;
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.2);
}

.tracking-node.active .tracking-icon {
    background: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
    box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.2);
}

.tracking-label {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-muted);
}

.tracking-node.completed .tracking-label, .tracking-node.active .tracking-label {
    color: var(--text);
}

/* User Account Profile Dashboard */
.profile-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2.5rem;
    align-items: start;
}

.profile-card {
    background: var(--surface-solid);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow);
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.profile-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 2.5rem;
    font-weight: 800;
    margin: 0 auto;
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.stat-box {
    background: var(--surface-solid);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    text-align: center;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.25rem;
}

.stat-box h3 {
    font-size: 1.8rem;
    color: var(--primary);
}

.stat-box p {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

/* Auth Pages Split Glass Layouts */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - var(--nav-height) - 150px);
    padding: 2rem 0;
}

.auth-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 900px;
    width: 100%;
    background: var(--surface);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-hover);
}

.auth-panel-left {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: #ffffff;
    padding: 3.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1.5rem;
}

.auth-panel-left h1 {
    color: #ffffff;
    font-size: 2.5rem;
}

.auth-panel-left p {
    color: rgba(255, 255, 255, 0.88);
}

.auth-highlights {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

.auth-highlight-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.auth-highlight-item i {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-panel-right {
    padding: 3.5rem;
    background: var(--surface-solid);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.auth-header {
    margin-bottom: 2rem;
}

.auth-header h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.auth-subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Footer layout */
.footer {
    background: #09090f;
    border-top: 1px solid var(--border);
    color: #94a3b8;
    padding: 3rem 0;
}

.footer-inner {
    width: min(1200px, 100% - 2.5rem);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-brand {
    font-size: 1.4rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.footer-copy {
    font-size: 0.88rem;
}

.footer-note {
    font-size: 0.85rem;
}

/* Mobile responsive navigation details */
.mobile-nav-button {
    display: none;
    background: transparent;
    border: none;
    color: var(--text);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
}

.mobile-nav {
    position: fixed;
    inset: 0;
    z-index: 9999;
    pointer-events: none;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.35s ease, visibility 0.35s ease;
}

.mobile-nav.open {
    pointer-events: auto;
    visibility: visible;
    opacity: 1;
}

.mobile-nav-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(11, 11, 20, 0.65);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 10000;
}

.mobile-nav-inner {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 85vw);
    background: var(--surface-solid);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.3);
    border-left: 1px solid var(--border);
    z-index: 10001;
    padding: 2.5rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

html[data-theme="dark"] .mobile-nav-inner {
    background: #0f0f1b; /* Extra solid dark background for dark mode menu */
}

html[data-theme="light"] .mobile-nav-inner {
    background: #ffffff; /* Extra solid white background for light mode menu */
}

.mobile-nav.open .mobile-nav-inner {
    transform: translateX(0);
}

.mobile-nav-close {
    align-self: flex-end;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
}

.mobile-nav-close:hover {
    background: var(--primary);
    color: #ffffff;
    transform: scale(1.05);
}

.mobile-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.mobile-links a {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text);
    padding: 0.9rem 1.2rem;
    border-radius: var(--radius-md);
    background: rgba(var(--primary-rgb), 0.02);
    border: 1.5px solid transparent;
    transition: var(--transition);
}

.mobile-links a i {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
    color: var(--primary);
    transition: var(--transition);
}

.mobile-links a:hover {
    background: rgba(var(--primary-rgb), 0.08);
    border-color: rgba(var(--primary-rgb), 0.15);
    color: var(--primary);
}

.mobile-links a:hover i {
    transform: translateX(3px);
}

/* Accessibility Focus Ring */
*:focus-visible {
    outline: 3px solid rgba(var(--primary-rgb), 0.5);
    outline-offset: 3px;
}

/* Media Query Adaptations */
@media (max-width: 1024px) {
    .grid-section, .checkout-grid, .profile-grid {
        grid-template-columns: 1fr;
    }
    
    .aside-panel {
        position: static;
    }
}

@media (max-width: 768px) {
    /* Premium Wrapping Header for Mobile */
    .topbar {
        height: auto !important;
        padding: 0.75rem 0;
    }
    
    .header-inner {
        flex-wrap: wrap;
        gap: 0.75rem;
    }
    
    .brand {
        order: 1;
    }
    
    .mobile-nav-button {
        display: inline-flex;
        order: 2;
    }
    
    .search-form {
        order: 3;
        width: 100%;
        max-width: 100%;
        margin-top: 0.25rem;
    }

    .nav-links {
        display: none;
    }
    
    /* Hero section centering adjustments */
    .hero-home {
        grid-template-columns: 1fr;
        padding: 3rem 1.5rem;
        gap: 2rem;
        text-align: center;
    }
    
    .hero-description {
        margin-inline: auto;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-panel {
        display: none;
    }
    
    /* Split panel grid stacks */
    .cart-grid, .detail-grid, .auth-panel {
        grid-template-columns: 1fr;
    }
    
    .auth-panel-left {
        display: none;
    }
    
    /* Premium Mobile Cart Layout */
    .cart-table {
        background: transparent;
        border: none;
        box-shadow: none;
        display: flex;
        flex-direction: column;
        gap: 1rem;
    }
    
    .cart-row {
        display: flex;
        flex-direction: column;
        gap: 0.85rem;
        padding: 1.25rem;
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        background: var(--surface-solid);
        box-shadow: var(--shadow);
        position: relative;
        text-align: left;
    }
    
    .cart-row.cart-header {
        display: none;
    }
    
    .cart-product {
        grid-column: auto;
        text-align: left;
        width: calc(100% - 30px);
    }
    
    .cart-product img {
        width: 64px;
        height: 64px;
    }
    
    .cart-row .col-price, .cart-row .col-total {
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 0.95rem;
        padding-top: 0.5rem;
        border-top: 1px dashed var(--border);
    }
    
    .cart-row .col-price::before {
        content: 'Unit Price';
        color: var(--text-muted);
        font-weight: 600;
        font-size: 0.85rem;
    }
    
    .cart-row .col-total::before {
        content: 'Subtotal';
        color: var(--text-muted);
        font-weight: 600;
        font-size: 0.85rem;
    }
    
    .quantity-form {
        margin-left: 0;
        max-width: 100%;
        width: 100%;
        justify-content: space-between;
    }
    
    /* Absolute position trash button in mobile card */
    .cart-row div:last-child {
        position: absolute;
        top: 1.25rem;
        right: 1.25rem;
        text-align: right;
    }

    /* Product Detail page mobile padding adjustments */
    .product-detail-card {
        padding: 1.5rem 1.25rem !important;
    }
    
    /* Footer centering */
    .footer-inner {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    /* Wizard steps label cleanups */
    .step-label {
        display: none;
    }
    
    .step-item.active .step-label {
        display: block;
        position: absolute;
        top: 45px;
        font-size: 0.72rem;
        white-space: nowrap;
    }
    
    .checkout-steps {
        margin-bottom: 4.5rem;
    }
}