/* ========================================
   SAYDAN KNITWEAR — Design System
   Minimal, Premium, Knitup-inspired
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;500;600;700;800&display=swap');

/* ── CSS Variables ── */
:root {
    --color-bg: #FFFFFF;
    --color-bg-soft: #F5F5F5;
    --color-bg-card: #F0F0F0;
    --color-text: #1A1A1A;
    --color-text-light: #6B6B6B;
    --color-text-muted: #999999;
    --color-border: #E5E5E5;
    --color-accent: #1A1A1A;
    --color-accent-hover: #333333;
    --color-white: #FFFFFF;
    --color-overlay: rgba(0, 0, 0, 0.03);

    --font-primary: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.75rem;
    --font-size-5xl: 3.5rem;
    --font-size-hero: clamp(3rem, 8vw, 6rem);

    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);

    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    --header-height: 72px;
    --max-width: 1440px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    overflow-x: hidden;
}

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

a:hover {
    opacity: 0.7;
}

button {
    font-family: var(--font-primary);
    cursor: pointer;
    border: none;
    background: none;
    font-size: inherit;
}

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

ul, ol {
    list-style: none;
}

/* ── Utility ── */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

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

/* ========================================
   HEADER / NAVIGATION — Knitup Style
   ======================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--color-bg);
    height: var(--header-height);
    display: flex;
    align-items: center;
    transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
    box-shadow: 0 1px 0 var(--color-border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xl);
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--color-text);
}

.logo img {
    height: 32px;
    width: auto;
}

.logo-mark {
    font-weight: 800;
    font-size: 1.6rem;
    letter-spacing: -1px;
}

/* Main Nav */
.main-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-2xl);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 6px;
    position: relative;
    padding: 4px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-text);
    transition: width var(--transition-base);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link:hover {
    opacity: 1;
}

.nav-link .dash {
    width: 16px;
    height: 1.5px;
    background: var(--color-text);
    display: inline-block;
}

/* Nav Dropdown */
.nav-item {
    position: relative;
}

.nav-dropdown {
    position: absolute;
    top: 100%;
    left: -16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    z-index: 100;
}

.nav-item:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-link {
    display: block;
    padding: var(--spacing-xs) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 400;
    color: var(--color-text-light);
    transition: all var(--transition-fast);
}

.dropdown-link:hover {
    background: var(--color-bg-soft);
    color: var(--color-text);
    opacity: 1;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
    color: var(--color-text);
}

.header-icon:hover {
    background: var(--color-bg-soft);
    opacity: 1;
}

.header-icon svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.8;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    padding: 10px 24px;
    background: var(--color-accent);
    color: var(--color-white);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    opacity: 1;
    transform: translateY(-1px);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    padding: 10px 24px;
    background: transparent;
    color: var(--color-text);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border: 1.5px solid var(--color-text);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-outline:hover {
    background: var(--color-text);
    color: var(--color-white);
    opacity: 1;
}

/* Mobile Menu Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    cursor: pointer;
}

.mobile-toggle span {
    width: 22px;
    height: 1.5px;
    background: var(--color-text);
    transition: all var(--transition-base);
}

/* ========================================
   HERO SECTION — Knitup Homepage Style
   ======================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    overflow: hidden;
    background: var(--color-bg-soft);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 55%;
    padding: var(--spacing-4xl) var(--spacing-2xl);
}

.hero-title {
    font-size: var(--font-size-hero);
    font-weight: 300;
    line-height: 1.05;
    letter-spacing: -2px;
    color: var(--color-text);
    margin-bottom: var(--spacing-xl);
    opacity: 0;
    animation: fadeInUp 1s ease 0.2s forwards;
}

.hero-title strong {
    font-weight: 700;
}

.hero-image {
    position: absolute;
    top: 50%;
    right: 5%;
    transform: translateY(-50%);
    width: 50%;
    max-width: 700px;
    z-index: 1;
    opacity: 0;
    animation: fadeIn 1.2s ease 0.5s forwards;
}

.hero-image img {
    width: 100%;
    height: auto;
    object-fit: contain;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-2xl);
    opacity: 0;
    animation: fadeInUp 1s ease 0.6s forwards;
}

/* ========================================
   SECTIONS — General
   ======================================== */

.section {
    padding: var(--spacing-4xl) 0;
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    max-width: 600px;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-3xl);
}

.feature-card {
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    background: var(--color-bg-soft);
    transition: transform var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 32px;
    height: 32px;
    stroke: var(--color-text);
    fill: none;
    stroke-width: 1.5;
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.7;
}

/* Stats */
.stats-section {
    background: var(--color-text);
    color: var(--color-white);
    padding: var(--spacing-3xl) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-2xl);
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.7;
    font-weight: 400;
}

/* ========================================
   FOOTER — Knitup Style
   ======================================== */

.site-footer {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-4xl) 0 var(--spacing-2xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-brand {
    max-width: 280px;
}

.footer-brand .logo-mark {
    margin-bottom: var(--spacing-md);
    display: inline-block;
}

.footer-brand p {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.8;
}

.footer-col h4 {
    font-size: var(--font-size-sm);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-col a {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    padding: var(--spacing-xs) 0;
}

.footer-col a:hover {
    color: var(--color-text);
    opacity: 1;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.footer-social a {
    color: var(--color-text-light);
}

/* ========================================
   STUDIO — Design Studio Page
   ======================================== */

.studio-page {
    padding-top: var(--header-height);
    min-height: 100vh;
    background: var(--color-bg-soft);
}

/* Studio Header */
.studio-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--color-bg-soft);
    height: var(--header-height);
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--color-border);
}

.studio-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.studio-nav-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.studio-step-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.studio-back {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    cursor: pointer;
    transition: opacity var(--transition-fast);
}

.studio-back:hover {
    opacity: 0.6;
}

.studio-back svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
}

.studio-nav-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.studio-logo {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

/* Step Title */
.step-title-bar {
    padding: var(--spacing-lg) var(--spacing-xl);
    max-width: var(--max-width);
    margin: 0 auto;
}

.step-title-bar h1 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.step-title-bar .step-badge {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-muted);
}

.step-product-name {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

/* Studio Content */
.studio-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl) var(--spacing-3xl);
}

/* Silhouette Grid (Step 1) */
.silhouette-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    padding-top: var(--spacing-lg);
}

.silhouette-card {
    cursor: pointer;
    transition: all var(--transition-base);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.silhouette-card:hover {
    transform: translateY(-4px);
}

.silhouette-card .card-image {
    aspect-ratio: 1;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    transition: background var(--transition-base);
}

.silhouette-card:hover .card-image {
    background: #E8E8E8;
}

.silhouette-card .card-image img {
    width: 75%;
    height: 75%;
    object-fit: contain;
    transition: transform var(--transition-base);
}

.silhouette-card:hover .card-image img {
    transform: scale(1.05);
}

.silhouette-card .card-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    padding: var(--spacing-md) var(--spacing-xs) 0;
    color: var(--color-text);
}

.silhouette-card .card-category {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    padding: 2px var(--spacing-xs) 0;
}

/* Category Filter */
.category-filter {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 6px 16px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
    color: var(--color-text-light);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--color-text);
    color: var(--color-white);
    border-color: var(--color-text);
}

/* Material Cards (Step 2) — Carousel */
.material-carousel {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-2xl) 0;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.material-carousel::-webkit-scrollbar {
    display: none;
}

.material-card {
    flex: 0 0 260px;
    scroll-snap-align: start;
    cursor: pointer;
    transition: all var(--transition-base);
}

.material-card:hover {
    transform: translateY(-4px);
}

.material-card .card-image {
    width: 260px;
    height: 280px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 3px solid transparent;
    transition: border-color var(--transition-base);
}

.material-card.selected .card-image,
.material-card:hover .card-image {
    border-color: var(--color-text);
}

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

.material-card:hover .card-image img {
    transform: scale(1.05);
}

.material-card .card-info {
    text-align: center;
    padding-top: var(--spacing-md);
}

.material-card .card-name {
    font-size: var(--font-size-base);
    font-weight: 700;
}

.material-card .card-type {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: 2px;
}

.material-card .card-meta {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.info-icon {
    width: 14px;
    height: 14px;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-text-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    color: var(--color-text-muted);
    cursor: help;
}

/* Carousel Nav Arrows */
.carousel-wrapper {
    position: relative;
}

.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-80%);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--color-text-light);
    z-index: 10;
    transition: color var(--transition-fast);
}

.carousel-arrow:hover {
    color: var(--color-text);
}

.carousel-arrow svg {
    width: 24px;
    height: 24px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.5;
}

.carousel-arrow.prev {
    left: -40px;
}

.carousel-arrow.next {
    right: -40px;
}

/* Construction Cards (Step 3) */
.construction-heading {
    font-size: var(--font-size-3xl);
    font-weight: 500;
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    margin-top: var(--spacing-xl);
}

.construction-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.construction-card {
    cursor: pointer;
    transition: all var(--transition-base);
    border: 3px solid transparent;
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.construction-card:hover,
.construction-card.selected {
    border-color: var(--color-text);
}

.construction-card .card-image {
    width: 100%;
    aspect-ratio: 16/10;
    overflow: hidden;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

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

.construction-card:hover .card-image img {
    transform: scale(1.05);
}

.construction-card .card-body {
    padding: var(--spacing-xl);
    background: var(--color-bg);
}

.construction-card .card-name {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.construction-card .card-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.6;
}

/* Color Selection (Step 4) */
.color-grid {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    gap: var(--spacing-md);
    padding: var(--spacing-2xl) 0;
}

.color-swatch {
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    cursor: pointer;
    position: relative;
    transition: all var(--transition-base);
    border: 3px solid transparent;
}

.color-swatch:hover {
    transform: scale(1.1);
    z-index: 1;
}

.color-swatch.selected {
    border-color: var(--color-text);
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.color-swatch .color-name {
    position: absolute;
    bottom: -24px;
    left: 50%;
    transform: translateX(-50%);
    font-size: var(--font-size-xs);
    white-space: nowrap;
    color: var(--color-text-light);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.color-swatch:hover .color-name,
.color-swatch.selected .color-name {
    opacity: 1;
}

.selected-colors {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-3xl);
    padding: var(--spacing-lg);
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    min-height: 60px;
    align-items: center;
}

.selected-colors-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    font-weight: 500;
    margin-right: var(--spacing-md);
}

.selected-color-chip {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    position: relative;
    border: 1px solid var(--color-border);
}

.selected-color-chip .remove {
    position: absolute;
    top: -6px;
    right: -6px;
    width: 16px;
    height: 16px;
    background: var(--color-text);
    color: var(--color-white);
    border-radius: var(--radius-full);
    font-size: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.selected-color-chip:hover .remove {
    opacity: 1;
}

/* Size Selection (Step 5) */
.size-section {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-2xl) 0;
}

.size-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.size-btn {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.custom-size-form {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-border);
}

.custom-size-form h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-light);
}

.form-group input,
.form-group textarea,
.form-group select {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    color: var(--color-text);
    transition: border-color var(--transition-fast);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--color-text);
}

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

/* Summary (Step 6) */
.summary-card {
    max-width: 700px;
    margin: 0 auto;
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3xl);
    box-shadow: var(--shadow-sm);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--color-border);
}

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

.summary-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    font-weight: 500;
}

.summary-value {
    font-size: var(--font-size-base);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.summary-colors {
    display: flex;
    gap: 4px;
}

.summary-color-dot {
    width: 20px;
    height: 20px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

.summary-contact {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-border);
}

.summary-contact h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
}

/* Studio Actions */
.studio-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding: var(--spacing-2xl) 0;
    max-width: var(--max-width);
    margin: 0 auto;
    padding-left: var(--spacing-xl);
    padding-right: var(--spacing-xl);
}

.btn-lg {
    padding: 14px 36px;
    font-size: var(--font-size-base);
}

/* Step transition */
.step-container {
    opacity: 1;
    transition: opacity var(--transition-base);
}

.step-container.fade-out {
    opacity: 0;
}

.step-container.fade-in {
    animation: fadeIn 0.4s ease forwards;
}

/* ========================================
   ABOUT PAGE
   ======================================== */

.about-hero {
    padding-top: calc(var(--header-height) + var(--spacing-4xl));
    padding-bottom: var(--spacing-4xl);
    text-align: center;
}

.about-hero h1 {
    font-size: var(--font-size-5xl);
    font-weight: 300;
    letter-spacing: -1.5px;
    margin-bottom: var(--spacing-lg);
}

.about-hero p {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
    padding: var(--spacing-4xl) 0;
}

.about-content.reverse {
    direction: rtl;
}

.about-content.reverse > * {
    direction: ltr;
}

.about-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 4/3;
    background: var(--color-bg-soft);
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-text h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.5px;
}

.about-text p {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

/* ========================================
   CONTACT PAGE
   ======================================== */

.contact-section {
    padding-top: calc(var(--header-height) + var(--spacing-4xl));
    padding-bottom: var(--spacing-4xl);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
}

.contact-info h1 {
    font-size: var(--font-size-4xl);
    font-weight: 300;
    letter-spacing: -1px;
    margin-bottom: var(--spacing-lg);
}

.contact-info p {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: var(--spacing-3xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.contact-item svg {
    width: 20px;
    height: 20px;
    stroke: var(--color-text-light);
    fill: none;
    stroke-width: 1.8;
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-item-text h3 {
    font-size: var(--font-size-sm);
    font-weight: 700;
    margin-bottom: 2px;
}

.contact-item-text p {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin: 0;
}

.contact-form {
    background: var(--color-bg-soft);
    padding: var(--spacing-3xl);
    border-radius: var(--radius-xl);
}

.contact-form h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-2xl);
}

.contact-form .form-group {
    margin-bottom: var(--spacing-lg);
}

.contact-form .btn-primary {
    width: 100%;
    justify-content: center;
    padding: 14px;
    font-size: var(--font-size-base);
    margin-top: var(--spacing-md);
}

/* Success message */
.success-message {
    display: none;
    text-align: center;
    padding: var(--spacing-3xl);
}

.success-message.show {
    display: block;
}

.success-message svg {
    width: 64px;
    height: 64px;
    stroke: #22c55e;
    fill: none;
    stroke-width: 1.5;
    margin-bottom: var(--spacing-lg);
}

.success-message h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
}

.success-message p {
    color: var(--color-text-light);
}

/* ========================================
   COOKIE BANNER
   ======================================== */

.cookie-banner {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    max-width: 400px;
    background: var(--color-text);
    color: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    z-index: 9999;
    font-size: var(--font-size-sm);
    line-height: 1.7;
    box-shadow: var(--shadow-lg);
    transform: translateY(120%);
    transition: transform var(--transition-slow);
}

.cookie-banner.show {
    transform: translateY(0);
}

.cookie-banner p {
    margin-bottom: var(--spacing-lg);
    opacity: 0.85;
}

.cookie-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.cookie-actions button {
    padding: 8px 20px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.cookie-accept {
    background: var(--color-white);
    color: var(--color-text);
}

.cookie-decline {
    border: 1px solid rgba(255,255,255,0.3);
    color: var(--color-white);
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Intersection observer animations */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   LOADING SPINNER
   ======================================== */

.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4xl);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-text);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 1024px) {
    .hero-content {
        max-width: 65%;
    }

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

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
    }

    .color-grid {
        grid-template-columns: repeat(7, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }

    .nav-links {
        display: none;
    }

    .mobile-toggle {
        display: flex;
    }

    /* Mobile Menu */
    .nav-links.mobile-open {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-bg);
        padding: var(--spacing-2xl);
        gap: var(--spacing-lg);
        z-index: 999;
        animation: fadeIn 0.3s ease;
    }

    .hero {
        flex-direction: column;
        min-height: auto;
        padding-bottom: var(--spacing-3xl);
    }

    .hero-content {
        max-width: 100%;
        padding: var(--spacing-2xl);
        text-align: center;
    }

    .hero-image {
        position: relative;
        top: auto;
        right: auto;
        transform: none;
        width: 80%;
        margin: 0 auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .silhouette-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .material-card {
        flex: 0 0 200px;
    }

    .material-card .card-image {
        width: 200px;
        height: 220px;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .about-content.reverse {
        direction: ltr;
    }

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-2xl);
    }

    .footer-brand {
        grid-column: 1 / -1;
    }

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

    .color-grid {
        grid-template-columns: repeat(5, 1fr);
    }

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

    .cookie-banner {
        left: var(--spacing-md);
        right: var(--spacing-md);
        max-width: none;
        bottom: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.2rem;
    }

    .silhouette-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }

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

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