/**
 * Aura Studio - High-Performance eCommerce Design System
 * Shopify Dawn / Apple Store Aesthetics & Architecture
 */

:root {
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Poppins', var(--font-body);

    /* Light Theme (Strict <7% contrast curve) */
    --bg-base: #fbfbfd;
    --bg-surface: #ffffff;
    --bg-surface-elevated: #ffffff;
    --bg-subtle: #f2f2f7;
    --bg-muted: #e5e5ea;

    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --text-tertiary: #86868b;
    --text-inverse: #ffffff;

    --border-subtle: rgba(0, 0, 0, 0.08);
    --border-strong: rgba(0, 0, 0, 0.16);

    --accent-primary: #0071e3;
    --accent-hover: #0077ed;
    --accent-dark: #004fb6;
    --accent-gold: #c5a059;

    --success: #34c759;
    --danger: #ff3b30;

    --header-height: 64px;
    --announcement-height: 38px;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-pill: 9999px;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.08);

    --transition: all 0.24s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
    --bg-base: #000000;
    --bg-surface: #121214;
    --bg-surface-elevated: #1c1c1e;
    --bg-subtle: #1c1c1e;
    --bg-muted: #2c2c2e;

    --text-primary: #f5f5f7;
    --text-secondary: #a1a1a6;
    --text-tertiary: #6e6e73;
    --text-inverse: #000000;

    --border-subtle: rgba(255, 255, 255, 0.12);
    --border-strong: rgba(255, 255, 255, 0.24);

    --accent-primary: #2997ff;
    --accent-hover: #47a7ff;
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.6);
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    background-color: var(--bg-base);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.2s ease, color 0.2s ease;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Layout Utilities */
.container {
    width: 100%;
    max-width: 1240px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.section {
    padding: 5rem 0;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

/* Announcement Bar */
.announcement-bar {
    background: #0f172a;
    color: #f8fafc;
    font-size: 0.8rem;
    letter-spacing: 0.02em;
    padding: 0.55rem 0;
    position: relative;
    z-index: 100;
}
.announcement-inner {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}
.announcement-close {
    position: absolute;
    right: 0;
    background: transparent;
    border: none;
    color: #94a3b8;
    cursor: pointer;
    display: flex;
    align-items: center;
}

/* Sticky Blurred Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 90;
    background: rgba(251, 251, 253, 0.82);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    height: var(--header-height);
    display: flex;
    align-items: center;
    transition: background 0.2s ease;
}

[data-theme="dark"] .site-header {
    background: rgba(18, 18, 20, 0.82);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.brand-mark {
    width: 14px;
    height: 14px;
    background: var(--text-primary);
    border-radius: 3px;
    display: inline-block;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.nav-link:hover {
    color: var(--text-primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-pill);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: var(--transition);
}

.icon-btn:hover {
    background: var(--bg-subtle);
}

.sun-icon { display: none; }
.moon-icon { display: block; }
[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }

.cart-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    background: var(--accent-primary);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    min-width: 18px;
    height: 18px;
    line-height: 18px;
    border-radius: var(--radius-pill);
    text-align: center;
    padding: 0 4px;
}

.menu-toggle-btn {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-pill);
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-surface);
}

.btn-primary:hover {
    opacity: 0.88;
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    border-color: var(--border-strong);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: var(--bg-subtle);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.05rem;
}

.btn-sm {
    padding: 0.45rem 0.9rem;
    font-size: 0.85rem;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-pill);
}

.badge-sale { background: #fee2e2; color: #b91c1c; }
.badge-new { background: #e0e7ff; color: #4338ca; }
.badge-featured { background: #fef3c7; color: #b45309; }
.badge-static { background: #dcfce7; color: #15803d; }

/* Hero Section */
.hero-section {
    position: relative;
    overflow: hidden;
    min-height: 580px;
    display: flex;
    align-items: center;
}

.hero-slide {
    width: 100%;
    padding: 6rem 0;
    position: relative;
}

.hero-backdrop {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 680px;
    color: #ffffff;
}

.hero-tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #93c5fd;
    margin-bottom: 1rem;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.4rem, 5vw, 3.8rem);
    font-weight: 700;
    line-height: 1.12;
    letter-spacing: -0.03em;
    margin-bottom: 1.25rem;
}

.hero-subtitle {
    font-size: 1.15rem;
    line-height: 1.55;
    color: #e2e8f0;
    margin-bottom: 2rem;
    font-weight: 400;
}

.hero-cta-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-cta-group .btn-outline {
    border-color: rgba(255, 255, 255, 0.4);
    color: #fff;
}
.hero-cta-group .btn-outline:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* Metric Strip */
.metric-strip {
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    padding: 1.5rem 0;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

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

.metric-icon {
    color: var(--accent-primary);
    flex-shrink: 0;
}

.metric-item strong {
    display: block;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.metric-item p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin: 0;
}

/* Section Header */
.section-header {
    margin-bottom: 2.5rem;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: 0.35rem;
}

.view-all-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--accent-primary);
}
.view-all-link:hover {
    gap: 0.6rem;
}

/* Category Grid */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.category-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 2rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 200px;
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-strong);
}

.category-eyebrow {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-tertiary);
    font-weight: 600;
}

.category-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin: 0.4rem 0 0.5rem;
}

.category-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.category-link-arrow {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-top: 1.25rem;
    display: inline-block;
}

/* Product Cards */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.product-card-image-wrap {
    position: relative;
    padding-top: 85%;
    background: var(--bg-subtle);
    overflow: hidden;
}

.product-card-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.product-card:hover .product-card-img {
    transform: scale(1.04);
}

.product-card-image-wrap .badge {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 2;
}

.product-card-body {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.product-card-category {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.product-card-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.product-card-price {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.product-card-price .price {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
}

.product-card-price .compare-price {
    font-size: 0.9rem;
    color: var(--text-tertiary);
    text-decoration: line-through;
}

.btn-quick-add {
    margin-top: auto;
    width: 100%;
}

/* Product Detail Page */
.breadcrumb-bar {
    padding: 1rem 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.breadcrumb-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

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

.breadcrumb-container .current {
    color: var(--text-primary);
    font-weight: 500;
}

.product-detail-section {
    padding: 2rem 0 4rem;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 3.5rem;
}

.main-image-container {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
}

.main-image {
    width: 100%;
    aspect-ratio: 1/1;
    object-fit: cover;
}

.thumbnail-strip {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
}

.gallery-thumb {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    padding: 2px;
    background: var(--bg-surface);
    cursor: pointer;
    overflow: hidden;
}

.gallery-thumb.active {
    border-color: var(--accent-primary);
}

.gallery-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 4px;
}

.product-category-eyebrow {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-primary);
    font-weight: 700;
}

.product-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    font-weight: 700;
    line-height: 1.2;
    margin: 0.4rem 0 1rem;
}

.product-rating-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    margin-bottom: 1.25rem;
}

.stars { color: #f59e0b; }
.rating-text { color: var(--text-secondary); }
.sku-text { color: var(--text-tertiary); font-size: 0.8rem; margin-left: auto; }

.price-row {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    padding: 1.25rem 0;
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: 1.5rem;
}

.current-price {
    font-size: 2rem;
    font-weight: 700;
}

.compare-price {
    font-size: 1.25rem;
    color: var(--text-tertiary);
    text-decoration: line-through;
}

.tax-tag {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.product-summary {
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* Qty Stepper & Add to Bag */
.cart-action-box {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 2rem;
}

.qty-stepper {
    display: flex;
    align-items: center;
    background: var(--bg-subtle);
    border-radius: var(--radius-pill);
    padding: 0.25rem;
}

.stepper-btn {
    background: transparent;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-pill);
    font-size: 1.2rem;
    cursor: pointer;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stepper-btn:hover {
    background: var(--bg-surface);
}

.qty-stepper input {
    width: 36px;
    text-align: center;
    background: transparent;
    border: none;
    font-weight: 700;
    color: var(--text-primary);
}

.btn-add-cart {
    flex: 1;
    padding: 0.9rem 1.5rem;
    font-size: 1.05rem;
}

.product-perks {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1.25rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    margin-bottom: 2rem;
}

.perk-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.product-features-block {
    margin-top: 1.5rem;
}

.features-heading {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.features-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.features-list li {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.92rem;
}

.features-list li svg {
    color: var(--accent-primary);
    flex-shrink: 0;
}

.prose-content {
    line-height: 1.7;
    color: var(--text-secondary);
}
.prose-content p { margin-bottom: 1rem; }
.prose-content h2, .prose-content h3 { color: var(--text-primary); margin: 1.5rem 0 0.75rem; }

/* Shop Toolbar */
.shop-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex: 1;
    min-width: 260px;
}

.search-box svg {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border-strong);
    background: var(--bg-surface);
    color: var(--text-primary);
    font-size: 0.95rem;
}

.filter-controls {
    display: flex;
    gap: 0.75rem;
}

.select-wrapper select {
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border-strong);
    background: var(--bg-surface);
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
}

.catalog-status {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Testimonials */
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.testimonial-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 2rem;
}

.testimonial-text {
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 1rem 0 1.5rem;
}

.testimonial-author strong {
    display: block;
    font-size: 0.95rem;
}

.testimonial-author span {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Footer */
.site-footer {
    background: var(--bg-surface);
    border-top: 1px solid var(--border-subtle);
    padding: 4rem 0 2rem;
    margin-top: 4rem;
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-heading {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 700;
    margin-bottom: 1.25rem;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--text-primary);
}

.footer-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 1rem 0 1.25rem;
    max-width: 320px;
}

.footer-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: #10b981;
    background: rgba(16, 185, 129, 0.08);
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-pill);
    font-weight: 600;
}

.ssg-dot {
    width: 7px;
    height: 7px;
    background: #10b981;
    border-radius: 50%;
}

.input-group {
    display: flex;
    gap: 0.5rem;
}

.input-field {
    flex: 1;
    padding: 0.65rem 1rem;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border-strong);
    background: var(--bg-subtle);
    color: var(--text-primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-subtle);
    padding-top: 2rem;
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

/* Toast */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    background: var(--text-primary);
    color: var(--bg-surface);
    padding: 0.85rem 1.25rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: 0.9rem;
    font-weight: 500;
    animation: toastSlide 0.3s ease;
}

@keyframes toastSlide {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.back-to-top {
    position: fixed;
    bottom: 24px;
    left: 24px;
    background: var(--bg-surface);
    border: 1px solid var(--border-strong);
    color: var(--text-primary);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 99;
}

/* Responsive */
@media (max-width: 900px) {
    .product-detail-grid { grid-template-columns: 1fr; }
    .footer-container { grid-template-columns: 1fr 1fr; }
    .metric-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .main-navigation {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--bg-surface);
        border-bottom: 1px solid var(--border-subtle);
        padding: 1.5rem;
    }
    .main-navigation.open { display: block; }
    .nav-list { flex-direction: column; gap: 1rem; }
    .menu-toggle-btn { display: block; }
    .footer-container { grid-template-columns: 1fr; }
}