/* ========================================
   FORMA - Premium Furniture Landing Page
   Modern Minimalist Design System
   ======================================== */

/* CSS Custom Properties - Design Tokens */
:root {
    /* Colors - Warm Premium Palette */
    --color-primary: #1a1a1a;
    --color-secondary: #C4A77D;
    --color-accent: #8B7355;
    --color-background: #FAFAF8;
    --color-surface: #FFFFFF;
    --color-text: #1a1a1a;
    --color-text-muted: #6B6B6B;
    --color-border: #E8E8E5;
    
    /* Gradients */
    --gradient-gold: linear-gradient(135deg, #C4A77D 0%, #8B7355 100%);
    --gradient-dark: linear-gradient(180deg, rgba(26,26,26,0) 0%, rgba(26,26,26,0.8) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    
    /* Typography */
    --font-heading: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 50%;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
    --shadow-md: 0 8px 32px rgba(0,0,0,0.08);
    --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
    --shadow-glow: 0 0 40px rgba(196,167,125,0.3);
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ========================================
   Reset & Base Styles
   ======================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-background);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   Preloader
   ======================================== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

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

.preloader-logo {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 600;
    color: var(--color-secondary);
    letter-spacing: 0.3em;
    margin-bottom: var(--space-lg);
    animation: pulse 1.5s ease-in-out infinite;
}

.preloader-bar {
    width: 200px;
    height: 2px;
    background: rgba(255,255,255,0.1);
    border-radius: 2px;
    overflow: hidden;
}

.preloader-progress {
    width: 0;
    height: 100%;
    background: var(--gradient-gold);
    animation: loading 1.5s ease-out forwards;
}

@keyframes loading {
    to { width: 100%; }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* ========================================
   Navigation
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--space-md) 0;
    transition: var(--transition-smooth);
}

.nav.scrolled {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    padding: var(--space-sm) 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
    letter-spacing: 0.2em;
    transition: var(--transition-fast);
}

.nav-logo:hover {
    color: var(--color-secondary);
}

.nav-links {
    display: flex;
    gap: var(--space-lg);
    list-style: none;
}

.nav-link {
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    position: relative;
    padding: var(--space-xs) 0;
    transition: var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-gold);
    transition: var(--transition-smooth);
}

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

.nav-cta {
    background: var(--color-primary);
    color: white;
    border: none;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.nav-cta:hover {
    background: var(--color-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

.nav-burger span {
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition-fast);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background: var(--color-surface);
    z-index: 999;
    padding: var(--space-2xl) var(--space-lg);
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-lg);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.mobile-link {
    font-size: 1.5rem;
    font-family: var(--font-heading);
    color: var(--color-text);
    text-decoration: none;
    display: block;
    padding: var(--space-sm) 0;
    transition: var(--transition-fast);
}

.mobile-link:hover {
    color: var(--color-secondary);
    transform: translateX(10px);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 1rem 2rem;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
    font-family: var(--font-body);
}

.btn-primary {
    background: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background: var(--color-secondary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.btn-primary svg {
    transition: var(--transition-fast);
}

.btn-primary:hover svg {
    transform: translateX(4px);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

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

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: var(--space-2xl) 0;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(ellipse, rgba(196,167,125,0.15) 0%, transparent 60%);
    animation: floatGradient 15s ease-in-out infinite;
}

@keyframes floatGradient {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-5%, 5%) rotate(10deg); }
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.hero-text {
    max-width: 600px;
}

.hero-subtitle {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--color-secondary);
    margin-bottom: var(--space-md);
    position: relative;
    padding-left: 50px;
}

.hero-subtitle::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 35px;
    height: 1px;
    background: var(--color-secondary);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 500;
    line-height: 1.1;
    margin-bottom: var(--space-md);
    color: var(--color-primary);
}

.hero-title-accent {
    color: var(--color-secondary);
    font-style: italic;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
    max-width: 480px;
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.hero-image {
    position: relative;
}

.hero-image-frame {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.hero-image-frame img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition-smooth);
}

.hero-float-card {
    position: absolute;
    background: var(--color-surface);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    animation: float 4s ease-in-out infinite;
}

.hero-float-card-1 {
    top: 10%;
    left: -10%;
    animation-delay: 0s;
}

.hero-float-card-2 {
    bottom: 15%;
    right: -5%;
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.float-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-secondary);
}

.float-text {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.hero-scroll-indicator {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-muted);
    font-size: 0.8rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

.scroll-arrow svg {
    stroke: var(--color-secondary);
}

/* ========================================
   Section Common Styles
   ======================================== */
.section-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.section-description {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 600px;
}

/* ========================================
   Configurator Section
   ======================================== */
.configurator {
    padding: var(--space-2xl) 0;
    background: var(--color-surface);
}

.configurator-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-xl);
    padding: 0 var(--space-lg);
}

.configurator-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-xl);
    align-items: start;
}

.configurator-preview {
    position: sticky;
    top: 100px;
}

.preview-frame {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-background);
    box-shadow: var(--shadow-lg);
    aspect-ratio: 4/3;
}

#roomCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

.preview-loader {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-fast);
}

.preview-loader.active {
    opacity: 1;
    visibility: visible;
}

.loader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-secondary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.price-display {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md);
    background: var(--color-primary);
    border-radius: var(--radius-sm);
    margin-top: var(--space-md);
}

.price-label {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
}

.price-value {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-secondary);
}

.configurator-panel {
    background: var(--color-background);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.panel-section {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.panel-section:last-of-type {
    border-bottom: none;
    margin-bottom: var(--space-md);
    padding-bottom: 0;
}

.panel-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-primary);
}

.panel-title svg {
    stroke: var(--color-secondary);
}

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

.option-card {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    cursor: pointer;
    transition: var(--transition-smooth);
    text-align: center;
}

.option-card:hover {
    border-color: var(--color-secondary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.option-card.active {
    border-color: var(--color-secondary);
    background: linear-gradient(135deg, rgba(196,167,125,0.1) 0%, rgba(196,167,125,0.05) 100%);
}

.option-preview {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
    margin: 0 auto var(--space-sm);
}

.option-name {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.option-price {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.color-options {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.color-btn {
    width: 48px;
    height: 48px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 4px;
    background: var(--color-surface);
    transition: var(--transition-smooth);
}

.color-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.color-btn.active {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.color-swatch {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: 4px;
}

/* ========================================
   Advantages Section
   ======================================== */
.advantages {
    padding: var(--space-2xl) 0;
    background: var(--color-background);
}

.advantages-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.advantages-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

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

.advantage-card {
    background: var(--color-surface);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-secondary);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(196,167,125,0.15) 0%, rgba(196,167,125,0.05) 100%);
    border-radius: var(--radius-full);
}

.advantage-icon svg {
    stroke: var(--color-secondary);
}

.advantage-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.advantage-text {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ========================================
   Quality Section
   ======================================== */
.quality {
    padding: var(--space-2xl) 0;
    background: var(--color-primary);
    color: white;
}

.quality-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.quality .section-label {
    color: rgba(255,255,255,0.6);
}

.quality .section-title {
    color: white;
}

.quality-description {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.7);
    margin-bottom: var(--space-lg);
}

.quality-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.quality-feature {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
}

.feature-check {
    width: 40px;
    height: 40px;
    background: var(--gradient-gold);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-check svg {
    stroke: var(--color-primary);
}

.feature-content h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.feature-content p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
}

.quality-visual {
    position: relative;
}

.quality-image-stack {
    position: relative;
    height: 500px;
}

.quality-image {
    position: absolute;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(196,167,125,0.4) 0%, rgba(139,115,85,0.6) 100%);
    overflow: hidden;
}

.quality-image-1 {
    width: 70%;
    height: 80%;
    top: 0;
    left: 0;
}

.quality-image-2 {
    width: 60%;
    height: 60%;
    bottom: 0;
    right: 0;
    background: linear-gradient(135deg, rgba(196,167,125,0.6) 0%, rgba(139,115,85,0.8) 100%);
}

.quality-badge {
    position: absolute;
    bottom: 20%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-surface);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.badge-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-secondary);
}

.badge-text {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
    padding: var(--space-2xl) 0;
    background: var(--color-background);
}

.contact-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: start;
}

.contact-description {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 1rem;
}

.contact-item svg {
    stroke: var(--color-secondary);
    flex-shrink: 0;
}

.contact-form-wrapper {
    background: var(--color-surface);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    position: relative;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

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

.form-label {
    font-size: 0.9rem;
    font-weight: 500;
}

.form-input {
    padding: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: var(--font-body);
    transition: var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(196,167,125,0.2);
}

.form-input.error {
    border-color: #e74c3c;
}

.form-error {
    font-size: 0.8rem;
    color: #e74c3c;
    min-height: 1.2em;
}

.form-privacy {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-align: center;
}

.privacy-link {
    color: var(--color-secondary);
    text-decoration: underline;
}

#submitBtn {
    position: relative;
    overflow: hidden;
}

.btn-loader {
    position: absolute;
    display: none;
}

#submitBtn.loading .btn-text {
    visibility: hidden;
}

#submitBtn.loading .btn-loader {
    display: block;
}

.spinner {
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
}

.spinner circle {
    stroke-dasharray: 60;
    stroke-dashoffset: 45;
}

.form-success {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-surface);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    border-radius: var(--radius-lg);
    text-align: center;
    padding: var(--space-lg);
}

.form-success.active {
    opacity: 1;
    visibility: visible;
}

.success-icon {
    margin-bottom: var(--space-md);
    color: #27ae60;
    animation: scaleIn 0.5s ease;
}

@keyframes scaleIn {
    0% { transform: scale(0); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.success-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

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

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--color-primary);
    color: white;
    padding: var(--space-xl) 0;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.footer-main {
    display: flex;
    justify-content: space-between;
    gap: var(--space-xl);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-secondary);
    text-decoration: none;
    letter-spacing: 0.2em;
}

.footer-tagline {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.5);
    margin-top: var(--space-xs);
}

.footer-links {
    display: flex;
    gap: var(--space-2xl);
}

.footer-heading {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.footer-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-list a {
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.footer-list a:hover {
    color: var(--color-secondary);
}

.footer-list li {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
}

.footer-bottom {
    padding-top: var(--space-lg);
    text-align: center;
}

.footer-copyright {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.4);
}

/* ========================================
   Animations
   ======================================== */
.animate-slide-up {
    opacity: 0;
    transform: translateY(40px);
}

.animate-fade-in {
    opacity: 0;
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1200px) {
    .configurator-container {
        grid-template-columns: 1fr;
    }
    
    .configurator-preview {
        position: relative;
        top: 0;
    }
    
    .quality-container {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .quality-image-stack {
        height: 400px;
    }
}

@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text {
        max-width: 100%;
    }
    
    .hero-subtitle {
        padding-left: 0;
    }
    
    .hero-subtitle::before {
        display: none;
    }
    
    .hero-description {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-float-card {
        display: none;
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-cta {
        display: none;
    }
    
    .nav-burger {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .option-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-main {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    :root {
        --space-lg: 1.5rem;
        --space-xl: 2.5rem;
        --space-2xl: 4rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .color-options {
        justify-content: center;
    }
}