/* ==========================================================================
   EQUALITIE DESIGN SYSTEM
   --------------------------------------------------------------------------
   A consolidated, token-driven stylesheet for the Equalitie e-commerce site.
   Monochrome palette, generous whitespace, and consistent component spacing.
   ========================================================================== */

/* ==================== 1. DESIGN TOKENS ==================== */
:root {
    /* Colors */
    --color-bg: #ffffff;
    --color-text: #111111;
    --color-text-muted: #666666;
    --color-border: #e5e5e5;
    --color-border-strong: #111111;
    --color-surface: #f8f8f8;
    --color-surface-hover: #eeeeee;
    --color-shadow: rgba(0, 0, 0, 0.08);

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.5rem;
    --text-2xl: 2rem;
    --text-3xl: 2.5rem;
    --text-4xl: clamp(2.5rem, 6vw, 4.5rem);
    --leading-none: 1;
    --leading-tight: 1.25;
    --leading-normal: 1.6;
    --leading-relaxed: 1.75;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Layout */
    --container: 1400px;
    --container-narrow: 800px;
    --header-height: 72px;
    --radius-sm: 2px;
    --radius-md: 4px;

    /* Motion */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

body.dark-mode {
    --color-bg: #0a0a0a;
    --color-text: #f5f5f5;
    --color-text-muted: #999999;
    --color-border: #2a2a2a;
    --color-border-strong: #f5f5f5;
    --color-surface: #141414;
    --color-surface-hover: #1f1f1f;
    --color-shadow: rgba(255, 255, 255, 0.05);
}

/* ==================== 2. RESET & BASE ==================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    transition: background-color var(--transition-base), color var(--transition-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    background: none;
    border: none;
    cursor: pointer;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

ul, ol {
    list-style: none;
}

/* ==================== 3. LAYOUT ==================== */
.container,
.shop-container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--space-8);
}

.container-narrow {
    max-width: var(--container-narrow);
}

main {
    padding-top: var(--header-height);
}

/* ==================== 4. HEADER ==================== */
#main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    transition: background-color var(--transition-base), border-color var(--transition-base);
}

#main-header.scrolled {
    border-bottom-color: var(--color-border-strong);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 var(--space-8);
}

/* Logo */
.logo-center {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.logo-center a {
    font-size: var(--text-xl);
    font-weight: 700;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    transition: opacity var(--transition-base);
}

.logo-center a:hover {
    opacity: 0.6;
}

.logo-center img {
    height: 36px;
    width: auto;
}

.flip-letter {
    display: inline-block;
    transform: scaleX(-1);
    margin-left: -0.2em;
    position: relative;
    top: -0.02em;
}

/* Navigation */
.nav-left,
.nav-right {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-left a,
.nav-right a {
    font-size: var(--text-sm);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    transition: opacity var(--transition-base);
}

.nav-left a:hover,
.nav-right a:hover {
    opacity: 0.5;
}

/* Theme Toggle & Cart */
#theme-toggle,
#cart-toggle,
#menu-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    transition: opacity var(--transition-base);
}

#theme-toggle:hover,
#cart-toggle:hover,
#menu-toggle:hover {
    opacity: 0.6;
}

.cart-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 5px;
    font-size: var(--text-xs);
    font-weight: 600;
    background-color: var(--color-text);
    color: var(--color-bg);
    border-radius: 9999px;
}

#menu-toggle {
    display: none;
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 1500;
    pointer-events: none;
    display: none;
}

.mobile-menu.active {
    pointer-events: all;
    display: block;
}

.mobile-menu-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.4);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.mobile-menu.active .mobile-menu-overlay {
    opacity: 1;
}

.mobile-menu-content {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-width: 360px;
    background-color: var(--color-bg);
    border-left: 1px solid var(--color-border);
    padding: var(--space-8);
    transform: translateX(100%);
    transition: transform var(--transition-base);
}

.mobile-menu.active .mobile-menu-content {
    transform: translateX(0);
}

#mobile-menu-close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    transition: opacity var(--transition-fast);
}

#mobile-menu-close:hover {
    opacity: 0.5;
}

.mobile-menu-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    margin-top: var(--space-16);
}

.mobile-menu-nav a {
    font-size: var(--text-xl);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--color-border);
    transition: opacity var(--transition-fast);
}

.mobile-menu-nav a:hover {
    opacity: 0.5;
}

/* ==================== 5. FOOTER ==================== */
footer {
    border-top: 1px solid var(--color-border);
    padding: var(--space-16) 0 var(--space-8);
    margin-top: var(--space-24);
}

.footer-container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--space-8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: var(--space-12);
    margin-bottom: var(--space-16);
}

.footer-section h3 {
    font-size: var(--text-lg);
    letter-spacing: 0.2em;
    margin-bottom: var(--space-4);
}

.footer-section h4 {
    font-size: var(--text-sm);
    letter-spacing: 0.15em;
    margin-bottom: var(--space-4);
    opacity: 0.6;
}

.footer-section p {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-links a {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

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

.newsletter-form {
    display: flex;
}

.newsletter-form input {
    flex: 1;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-right: none;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--color-border-strong);
}

.newsletter-form button {
    border: 1px solid var(--color-border);
    padding: 0 var(--space-5);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.newsletter-form button:hover {
    background-color: var(--color-text);
    color: var(--color-bg);
    border-color: var(--color-text);
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-8);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--text-xs);
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.designer-link {
    color: inherit;
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: opacity var(--transition-fast);
}

.designer-link:hover {
    opacity: 0.6;
}

/* ==================== 6. CART SIDEBAR ==================== */
.cart-sidebar {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-width: 460px;
    z-index: 2000;
    pointer-events: none;
}

.cart-sidebar.active {
    pointer-events: all;
}

.cart-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.4);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.cart-sidebar.active .cart-overlay {
    opacity: 1;
}

.cart-content {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    background-color: var(--color-bg);
    border-left: 1px solid var(--color-border);
    padding: var(--space-8);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--transition-base);
}

.cart-sidebar.active .cart-content {
    transform: translateX(0);
}

.cart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.cart-header h2 {
    font-size: var(--text-lg);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

#cart-close {
    transition: opacity var(--transition-fast);
}

#cart-close:hover {
    opacity: 0.5;
}

.cart-items {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.cart-item {
    border: 1px solid var(--color-border);
    padding: var(--space-4);
}

.cart-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2);
}

.cart-item-name {
    font-size: var(--text-sm);
    letter-spacing: 0.05em;
}

.cart-item-size {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--space-2);
}

.cart-item-price {
    font-size: var(--text-sm);
    font-weight: 500;
}

.remove-item {
    transition: opacity var(--transition-fast);
}

.remove-item:hover {
    opacity: 0.5;
}

.cart-empty {
    text-align: center;
    padding: var(--space-16) 0;
    color: var(--color-text-muted);
}

.cart-summary {
    margin-top: auto;
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border);
}

.cart-total {
    margin-bottom: var(--space-6);
}

.cart-summary .total-row {
    display: flex;
    justify-content: space-between;
    font-size: var(--text-base);
    margin-bottom: var(--space-2);
}

.shipping-note {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-top: var(--space-2);
}

.checkout-btn {
    display: block;
    width: 100%;
    padding: var(--space-4);
    border: 1px solid var(--color-border-strong);
    text-align: center;
    font-size: var(--text-sm);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.checkout-btn:hover {
    background-color: var(--color-text);
    color: var(--color-bg);
}

/* ==================== 7. PRODUCT MODAL ==================== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 3000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 960px;
    max-height: 90vh;
    overflow-y: auto;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    padding: var(--space-8);
}

.modal-close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    z-index: 1;
    transition: opacity var(--transition-fast);
}

.modal-close:hover {
    opacity: 0.5;
}

.modal-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-10);
}

.modal-image {
    aspect-ratio: 1;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    overflow: hidden;
}

.modal-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.modal-image:hover img {
    transform: scale(1.03);
}

.modal-details {
    display: flex;
    flex-direction: column;
}

.modal-details h2 {
    font-size: var(--text-2xl);
    letter-spacing: 0.1em;
    margin-bottom: var(--space-4);
}

.modal-price {
    font-size: var(--text-lg);
    margin-bottom: var(--space-6);
}

.modal-description {
    color: var(--color-text-muted);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-8);
}

.size-selector {
    margin-bottom: var(--space-8);
}

.size-selector > p {
    font-size: var(--text-xs);
    letter-spacing: 0.15em;
    margin-bottom: var(--space-4);
    opacity: 0.6;
}

.size-options {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-3);
}

.size-btn {
    border: 1px solid var(--color-border);
    padding: var(--space-3);
    font-size: var(--text-sm);
    letter-spacing: 0.05em;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.size-btn:hover {
    border-color: var(--color-border-strong);
}

.size-btn.selected {
    background-color: var(--color-text);
    color: var(--color-bg);
    border-color: var(--color-text);
}

.add-to-cart-btn {
    width: 100%;
    padding: var(--space-4);
    border: 1px solid var(--color-border-strong);
    font-size: var(--text-sm);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.add-to-cart-btn:not(:disabled):hover {
    background-color: var(--color-text);
    color: var(--color-bg);
}

.add-to-cart-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ==================== 8. HOME PAGE ==================== */
.hero {
    min-height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--color-border);
    position: relative;
}

.hero-content {
    text-align: center;
    padding: var(--space-12);
}

.hero-logo {
    max-width: 440px;
    width: 95%;
    height: auto;
    margin: 0 auto var(--space-10);
}

.hero-btn {
    display: inline-block;
    padding: var(--space-4) var(--space-10);
    border: 1px solid var(--color-border-strong);
    font-size: var(--text-sm);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.hero-btn:hover {
    background-color: var(--color-text);
    color: var(--color-bg);
}

/* Show/hide based on theme */
body:not(.dark-mode) .hero-logo.logo-dark,
body:not(.dark-mode) .logo-dark,
body.dark-mode .hero-logo.logo-light,
body.dark-mode .logo-light {
    display: none;
}

/* Collections */
.collections {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
}

.collection-tile {
    height: 420px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-bg);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.collection-tile:first-child {
    border-right: 1px solid var(--color-border);
}

.collection-tile:hover {
    background-color: var(--color-text);
    color: var(--color-bg);
}

.collection-tile h2 {
    font-size: var(--text-2xl);
    letter-spacing: 0.3em;
    text-transform: uppercase;
}

/* ==================== 9. SHOP PAGE ==================== */
.shop-page {
    padding: var(--space-16) 0;
}

.page-title {
    font-size: var(--text-3xl);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: var(--space-10);
}

/* Collection Filter */
.collection-filter {
    display: flex;
    gap: var(--space-8);
    padding-bottom: var(--space-6);
    margin-bottom: var(--space-10);
    border-bottom: 1px solid var(--color-border);
}

.filter-btn {
    font-size: var(--text-sm);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    opacity: 0.5;
    transition: opacity var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    opacity: 1;
}

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-8);
}

.product-card {
    cursor: pointer;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.product-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.product-image {
    aspect-ratio: 1;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    margin-bottom: var(--space-4);
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow), opacity var(--transition-base);
}

.product-card:hover .product-image img {
    transform: scale(1.03);
    opacity: 0.9;
}

.product-name {
    font-size: var(--text-sm);
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
}

.product-price {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

/* ==================== 10. CONTENT PAGES ==================== */
.content-page {
    padding: var(--space-16) 0;
    min-height: 60vh;
}

.content-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--space-8);
}

.content-container-small {
    max-width: var(--container-narrow);
    margin: 0 auto;
    padding: 0 var(--space-8);
}

.content-box {
    border: 1px solid var(--color-border);
    padding: var(--space-8);
    margin-bottom: var(--space-8);
    background-color: var(--color-bg);
}

.content-box p {
    color: var(--color-text-muted);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-5);
}

.content-box p:last-child {
    margin-bottom: 0;
}

.section-title {
    font-size: var(--text-sm);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: var(--space-6);
    opacity: 0.6;
}

/* Returns */
.returns-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.returns-list {
    list-style-position: inside;
    color: var(--color-text-muted);
    line-height: var(--leading-relaxed);
    padding-left: var(--space-4);
}

.returns-list li {
    margin-bottom: var(--space-3);
}

/* Size Guide */
.size-guide-section {
    margin-bottom: var(--space-12);
}

.table-container {
    border: 1px solid var(--color-border);
    overflow-x: auto;
}

.size-table {
    width: 100%;
    border-collapse: collapse;
}

.size-table th,
.size-table td {
    padding: var(--space-4);
    text-align: left;
    border-right: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.size-table th:last-child,
.size-table td:last-child {
    border-right: none;
}

.size-table thead th {
    font-size: var(--text-xs);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    background-color: var(--color-surface);
}

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

/* ==================== 11. FORMS ==================== */
.contact-form,
.checkout-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: var(--text-xs);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--space-2);
    opacity: 0.6;
}

.form-group input,
.form-group textarea {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-border-strong);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-6);
}

.submit-btn {
    width: 100%;
    padding: var(--space-4);
    border: 1px solid var(--color-border-strong);
    font-size: var(--text-sm);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.submit-btn:hover {
    background-color: var(--color-text);
    color: var(--color-bg);
}

.form-message {
    text-align: center;
    padding: var(--space-8);
    color: var(--color-text-muted);
}

/* ==================== 12. CHECKOUT ==================== */
.checkout-page {
    padding: var(--space-16) 0;
}

.checkout-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--space-8);
}

.checkout-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-10);
    align-items: start;
}

.checkout-form-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

/* Stripe Elements */
.stripe-card-input {
    border: 1px solid var(--color-border);
    padding: var(--space-4);
    background-color: var(--color-bg);
    transition: border-color var(--transition-fast);
}

.stripe-card-input:focus-within {
    border-color: var(--color-border-strong);
}

.stripe-errors {
    color: #fa755a;
    margin-top: var(--space-3);
    font-size: var(--text-sm);
}

.stripe-placeholder {
    border: 1px solid var(--color-border);
    padding: var(--space-8);
    text-align: center;
    color: var(--color-text-muted);
}

.stripe-note {
    font-size: var(--text-sm);
    opacity: 0.7;
}

/* Order Summary */
.order-summary-section .content-box,
.sticky-summary {
    position: sticky;
    top: calc(var(--header-height) + var(--space-8));
}

.summary-items {
    margin-bottom: var(--space-8);
}

.summary-item {
    padding-bottom: var(--space-5);
    margin-bottom: var(--space-5);
    border-bottom: 1px solid var(--color-border);
}

.summary-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.summary-item-details {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-2);
    font-size: var(--text-sm);
}

.item-size {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

.summary-totals {
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-6);
    margin-bottom: var(--space-8);
}

.total-row {
    display: flex;
    justify-content: space-between;
    font-size: var(--text-sm);
    margin-bottom: var(--space-3);
}

.total-final {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border);
}

.place-order-btn {
    width: 100%;
    padding: var(--space-4);
    border: 1px solid var(--color-border-strong);
    font-size: var(--text-sm);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.place-order-btn:hover {
    background-color: var(--color-text);
    color: var(--color-bg);
}

.place-order-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.empty-cart-message {
    text-align: center;
    padding: var(--space-20) 0;
}

.empty-cart-message p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-8);
}

.shop-btn {
    display: inline-block;
    padding: var(--space-4) var(--space-10);
    border: 1px solid var(--color-border-strong);
    font-size: var(--text-sm);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.shop-btn:hover {
    background-color: var(--color-text);
    color: var(--color-bg);
}

/* ==================== 13. ORDER SUCCESS ==================== */
.order-success {
    text-align: center;
}

.success-icon {
    margin-bottom: var(--space-8);
    color: var(--color-text-muted);
}

.order-number {
    font-size: var(--text-lg);
    letter-spacing: 0.1em;
    margin-bottom: var(--space-8);
    font-weight: 600;
}

.order-items {
    margin-bottom: var(--space-8);
}

.order-item {
    display: flex;
    justify-content: space-between;
    padding-bottom: var(--space-5);
    margin-bottom: var(--space-5);
    border-bottom: 1px solid var(--color-border);
    text-align: left;
}

.order-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.item-details {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

.order-totals {
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-6);
}

.continue-shopping-btn {
    display: inline-block;
    margin-top: var(--space-8);
    padding: var(--space-4) var(--space-10);
    border: 1px solid var(--color-border-strong);
    font-size: var(--text-sm);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.continue-shopping-btn:hover {
    background-color: var(--color-text);
    color: var(--color-bg);
}

/* ==================== 14. ADMIN PANEL ==================== */
.admin-body {
    min-height: 100vh;
}

.admin-header {
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4) var(--space-8);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.admin-header h1 {
    font-size: var(--text-lg);
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.admin-nav {
    display: flex;
    gap: var(--space-6);
}

.admin-nav a {
    font-size: var(--text-sm);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

.admin-nav a:hover {
    opacity: 1;
}

.admin-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: var(--space-8);
}

.admin-section {
    margin-bottom: var(--space-12);
}

.admin-section h2 {
    font-size: var(--text-sm);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--color-border);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th,
.admin-table td {
    padding: var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    font-size: var(--text-sm);
}

.admin-table th {
    font-size: var(--text-xs);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    background-color: var(--color-surface);
}

.admin-table tr:hover td {
    background-color: var(--color-surface);
}

.admin-table a {
    text-decoration: underline;
    text-underline-offset: 3px;
}

.status-badge {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    border: 1px solid var(--color-border);
    font-size: var(--text-xs);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.status-badge.succeeded {
    background-color: var(--color-text);
    color: var(--color-bg);
    border-color: var(--color-text);
}

.status-badge.pending,
.status-badge.failed {
    opacity: 0.6;
}

.admin-btn {
    display: inline-block;
    padding: var(--space-3) var(--space-5);
    border: 1px solid var(--color-border-strong);
    font-size: var(--text-sm);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.admin-btn:hover {
    background-color: var(--color-text);
    color: var(--color-bg);
}

.admin-card {
    border: 1px solid var(--color-border);
    padding: var(--space-6);
    margin-bottom: var(--space-6);
}

.admin-card h3 {
    font-size: var(--text-sm);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--color-border);
}

.admin-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.admin-row dt {
    font-size: var(--text-xs);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    opacity: 0.6;
    margin-bottom: var(--space-1);
}

.admin-row dd {
    font-size: var(--text-sm);
    margin: 0;
}

.admin-items-list {
    list-style: none;
}

.admin-items-list li {
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    font-size: var(--text-sm);
}

.admin-items-list li:last-child {
    border-bottom: none;
}

.admin-empty {
    text-align: center;
    padding: var(--space-16);
    color: var(--color-text-muted);
}

/* ==================== 15. UTILITIES ==================== */
.original-price {
    text-decoration: line-through;
    opacity: 0.5;
    margin-right: var(--space-2);
}

.sale-price {
    color: var(--color-text);
    font-weight: 600;
}

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

.text-center {
    text-align: center;
}

/* ==================== 16. RESPONSIVE ==================== */
@media (max-width: 1024px) {
    .checkout-grid,
    .modal-grid {
        grid-template-columns: 1fr;
    }

    .order-summary-section .content-box {
        position: static;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 64px;
    }

    .container,
    .shop-container,
    .content-container,
    .content-container-small,
    .checkout-container,
    .admin-container {
        padding: 0 var(--space-5);
    }

    .header-container {
        padding: 0 var(--space-5);
    }

    .nav-left,
    .nav-right a {
        display: none;
    }

    #menu-toggle {
        display: inline-flex;
    }

    .nav-right {
        gap: var(--space-2);
    }

    .logo-center {
        position: static;
        transform: none;
        flex: 1;
        text-align: center;
    }

    .logo-center a {
        font-size: var(--text-lg);
        letter-spacing: 0.15em;
    }

    .hero-content {
        padding: var(--space-8);
    }

    .hero-logo {
        max-width: 300px;
        margin-bottom: var(--space-8);
    }

    .collections {
        grid-template-columns: 1fr;
    }

    .collection-tile {
        height: 280px;
    }

    .collection-tile:first-child {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }

    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-5);
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }

    .content-box {
        padding: var(--space-6);
    }

    .modal-grid {
        gap: var(--space-6);
    }

    .modal-content {
        padding: var(--space-6);
    }

    .modal-details h2 {
        font-size: var(--text-xl);
    }

    .cart-content {
        padding: var(--space-6);
    }

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

    .admin-table {
        display: block;
        overflow-x: auto;
    }
}

@media (max-width: 480px) {
    .product-grid {
        grid-template-columns: 1fr;
    }

    .page-title {
        font-size: var(--text-2xl);
    }

    .collection-tile h2 {
        font-size: var(--text-xl);
    }
}