/* CSS Variables */
:root {
    /* Primary Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --primary-color: #6366f1;
    --secondary: #1e1b4b;
    --accent: #8b5cf6;
    
    /* Text Colors */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #111827;
    
    /* Border Colors */
    --border: #e5e7eb;
    --border-color: #e5e7eb;
    
    /* Status Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    /* Gray Scale (Tailwind-like) */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Blue Scale */
    --blue-50: #eff6ff;
    --blue-100: #dbeafe;
    --blue-500: #3b82f6;
    --blue-600: #2563eb;
    --blue-700: #1d4ed8;
    
    /* Green Scale */
    --green-50: #f0fdf4;
    --green-100: #dcfce7;
    --green-500: #22c55e;
    --green-600: #16a34a;
    
    /* Red Scale */
    --red-50: #fef2f2;
    --red-500: #ef4444;
    --red-600: #dc2626;
    
    /* Orange Scale */
    --orange-50: #fff7ed;
    --orange-500: #f97316;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Border Radius */
    --radius: 8px;
    --radius-lg: 16px;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
}

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

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

ul {
    list-style: none;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border);
}

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

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
}

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    overflow: hidden;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-3d-model {
    width: 400px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: float 6s ease-in-out infinite;
}

.model-placeholder svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 20px 40px rgba(99, 102, 241, 0.3));
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* Upload Section */
.upload-section {
    padding: 80px 0;
    background: var(--bg-primary);
}

.upload-card {
    max-width: 700px;
    margin: 0 auto;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.upload-header {
    padding: 32px 32px 0;
    text-align: center;
}

.upload-header h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}

.upload-header p {
    color: var(--text-secondary);
}

.upload-area {
    margin: 24px 32px;
    padding: 48px;
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.upload-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: 50%;
    color: var(--primary);
}

.upload-icon svg {
    width: 100%;
    height: 100%;
}

.upload-area h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.upload-area p {
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.file-types {
    font-size: 13px;
    color: var(--text-light);
}

.upload-features {
    display: flex;
    justify-content: center;
    gap: 32px;
    padding: 24px 32px 32px;
    border-top: 1px solid var(--border);
}

.upload-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.upload-feature svg {
    width: 20px;
    height: 20px;
    color: var(--success);
}

/* How It Works */
.how-it-works {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 18px;
    color: var(--text-secondary);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.step-card {
    position: relative;
    background: white;
    padding: 32px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.step-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.step-number {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    width: 32px;
    height: 32px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
}

.step-icon {
    width: 64px;
    height: 64px;
    margin: 16px auto 24px;
    padding: 16px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    border-radius: var(--radius);
    color: white;
}

.step-icon svg {
    width: 100%;
    height: 100%;
}

.step-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.step-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Materials Section */
.materials-section {
    padding: 100px 0;
    background: var(--bg-primary);
}

.materials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.material-card {
    padding: 32px;
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
}

.material-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.material-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    border-radius: 50%;
}

.material-icon.pla {
    background: linear-gradient(135deg, #22c55e, #16a34a);
}

.material-icon.abs {
    background: linear-gradient(135deg, #eab308, #ca8a04);
}

.material-icon.petg {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.material-icon.resin {
    background: linear-gradient(135deg, #f43f5e, #e11d48);
}

.material-icon.nylon {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.material-icon.tpu {
    background: linear-gradient(135deg, #06b6d4, #0891b2);
}

.material-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.material-card p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.material-price {
    display: inline-block;
    padding: 6px 16px;
    background: var(--bg-secondary);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
}

/* Features Section */
.features-section {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.features-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.features-text h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 40px;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.feature-item {
    display: flex;
    gap: 20px;
}

.feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    padding: 12px;
    background: var(--primary);
    border-radius: var(--radius);
    color: white;
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-text h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-text p {
    font-size: 15px;
    color: var(--text-secondary);
}

.features-visual {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.printer-animation {
    position: relative;
    width: 200px;
    height: 200px;
}

.printer-base {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 20px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 4px;
}

.printer-head {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 40px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 4px;
    animation: printHead 2s ease-in-out infinite;
}

.print-object {
    position: absolute;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 0;
    background: white;
    border-radius: 4px 4px 0 0;
    animation: printObject 4s ease-in-out infinite;
}

@keyframes printHead {
    0%, 100% { left: 30%; }
    50% { left: 70%; }
}

@keyframes printObject {
    0%, 10% { height: 0; }
    90%, 100% { height: 100px; }
}

/* Pricing Section */
.pricing-section {
    padding: 100px 0;
    background: var(--bg-primary);
}

.pricing-breakdown {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.pricing-card {
    padding: 40px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.pricing-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 24px;
}

.pricing-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.pricing-list li {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.pricing-label {
    font-size: 16px;
    font-weight: 600;
}

.pricing-desc {
    font-size: 14px;
    color: var(--text-secondary);
}

.pricing-example {
    padding: 40px;
    background: white;
    border: 2px solid var(--primary);
    border-radius: var(--radius-lg);
}

.pricing-example h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 24px;
}

.quote-example {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.quote-model {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
}

.quote-details {
    flex: 1;
}

.quote-name {
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.quote-line {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.quote-total {
    display: flex;
    justify-content: space-between;
    padding: 16px 0 0;
    margin-top: 8px;
    border-top: 2px solid var(--text-primary);
    font-size: 18px;
    font-weight: 700;
}

/* FAQ Section */
.faq-section {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    width: 100%;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 16px;
    font-weight: 600;
    text-align: left;
    background: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--primary);
}

.faq-question svg {
    width: 20px;
    height: 20px;
    color: var(--text-light);
    transition: var(--transition);
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
    color: var(--primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding: 0 24px 20px;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.7;
}

/* CTA Section */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
}

.cta-content {
    text-align: center;
    color: white;
}

.cta-content h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 32px;
}

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

.cta-section .btn-primary:hover {
    background: var(--bg-secondary);
}

/* Footer */
.footer {
    padding: 80px 0 40px;
    background: var(--bg-dark);
    color: white;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    margin-bottom: 16px;
    color: white;
}

.footer-brand .logo-icon {
    color: var(--primary-light);
}

.footer-brand p {
    color: var(--text-light);
    font-size: 14px;
    max-width: 280px;
}

.footer-links h4 {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
    color: white;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 14px;
    color: var(--text-light);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 14px;
    color: var(--text-light);
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal a {
    font-size: 14px;
    color: var(--text-light);
}

.footer-legal a:hover {
    color: var(--primary-light);
}

/* ========================================
   Site Header & Navigation
   ======================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: white;
    transition: transform 0.3s, box-shadow 0.3s;
}

.site-header.scrolled {
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

.site-header.hidden {
    transform: translateY(-100%);
}

/* Header Top Bar */
.header-top {
    background: var(--gray-900, #111827);
    color: white;
    font-size: 0.8125rem;
    padding: 8px 0;
}

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

.contact-info {
    display: flex;
    gap: 24px;
}

.contact-info a {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--gray-300, #d1d5db);
    transition: color 0.2s;
}

.contact-info a:hover {
    color: white;
}

.contact-info svg {
    opacity: 0.7;
}

.header-top-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.lead-time-badge {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.account-link {
    color: var(--gray-300, #d1d5db);
}

.account-link:hover {
    color: white;
}

/* Auth Styles */
.nav-auth {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-greeting {
    color: var(--gray-300, #d1d5db);
}

.btn-logout-small {
    background: transparent;
    border: none;
    color: var(--gray-400, #9ca3af);
    cursor: pointer;
    padding: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
}

.btn-logout-small:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

/* Main Navigation */
.main-nav {
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-100, #f3f4f6);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 40px;
    height: 40px;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--gray-900, #111827);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 10px 16px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-700, #374151);
    border-radius: 8px;
    transition: background 0.2s, color 0.2s;
}

.nav-link:hover {
    background: var(--gray-100, #f3f4f6);
    color: var(--primary);
}

.nav-link svg {
    transition: transform 0.2s;
}

.nav-item.has-mega:hover .nav-link svg {
    transform: rotate(180deg);
}

/* Mega Menu */
.mega-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding-top: 12px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

.nav-item.has-mega:hover .mega-menu {
    opacity: 1;
    visibility: visible;
}

.mega-content {
    display: grid;
    grid-template-columns: repeat(3, 200px);
    gap: 2rem;
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.15);
    border: 1px solid var(--gray-100, #f3f4f6);
}

.mega-section h4 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500, #6b7280);
    margin-bottom: 1rem;
}

.mega-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mega-section ul li {
    margin-bottom: 8px;
}

.mega-section ul a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    margin: 0 -12px;
    border-radius: 8px;
    font-size: 0.9375rem;
    color: var(--gray-700, #374151);
    transition: background 0.2s;
}

.mega-section ul a:hover {
    background: var(--gray-100, #f3f4f6);
    color: var(--primary);
}

.mega-icon {
    font-size: 1.25rem;
    width: 28px;
    text-align: center;
}

.mega-cta {
    background: var(--gray-50, #f9fafb);
    padding: 1.5rem;
    border-radius: 12px;
    margin: -0.5rem;
}

.mega-cta p {
    font-size: 0.875rem;
    color: var(--gray-600, #4b5563);
    margin-bottom: 1rem;
    line-height: 1.5;
}

/* Nav Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.search-toggle,
.nav-icon-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: none;
    background: transparent;
    color: var(--gray-600, #4b5563);
    cursor: pointer;
    transition: background 0.2s;
}

.search-toggle:hover,
.nav-icon-link:hover {
    background: var(--gray-100, #f3f4f6);
}

.btn-nav {
    padding: 10px 20px;
    font-size: 0.9375rem;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: none;
    background: transparent;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-700, #374151);
    margin: 5px 0;
    transition: transform 0.3s, opacity 0.3s;
}

/* Search Overlay */
.search-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.search-overlay.open {
    opacity: 1;
    visibility: visible;
}

.search-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 600px;
    background: white;
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 25px 50px rgba(0,0,0,0.25);
}

.search-input-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.search-input {
    flex: 1;
    padding: 1rem;
    border: none;
    font-size: 1.125rem;
    outline: none;
}

.search-close {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--gray-100, #f3f4f6);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ========================================
   Site Footer
   ======================================== */

.site-footer {
    background: var(--gray-900, #111827);
    color: white;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .logo {
    margin-bottom: 1rem;
}

.footer-brand .logo-text {
    color: white;
}

.footer-brand p {
    color: var(--gray-400, #9ca3af);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    max-width: 280px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: background 0.2s;
}

.footer-social a:hover {
    background: var(--primary);
}

.footer-column h4 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
    color: white;
}

.footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column ul a {
    color: var(--gray-400, #9ca3af);
    font-size: 0.9375rem;
    transition: color 0.2s;
}

.footer-column ul a:hover {
    color: white;
}

.footer-trust {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 2rem;
}

.trust-badge {
    width: 60px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
    color: var(--gray-400, #9ca3af);
}

.footer-bottom-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-bottom-bar p {
    color: var(--gray-500, #6b7280);
    font-size: 0.875rem;
}

.footer-legal-links {
    display: flex;
    gap: 24px;
}

.footer-legal-links a {
    color: var(--gray-500, #6b7280);
    font-size: 0.875rem;
}

.footer-legal-links a:hover {
    color: white;
}

/* ========================================
   Mobile Drawer Navigation
   ======================================== */

.mobile-toggle {
    display: none;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 10px;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-700, #374151);
    transition: transform 0.3s, opacity 0.3s;
}

.mobile-drawer {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 320px;
    max-width: 85vw;
    background: white;
    z-index: 2001;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    box-shadow: 4px 0 20px rgba(0,0,0,0.15);
}

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

.mobile-drawer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--gray-100, #f3f4f6);
}

.mobile-drawer-header .logo-text {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--gray-900, #111827);
}

.mobile-close {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--gray-100, #f3f4f6);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-600, #4b5563);
    transition: background 0.2s;
}

.mobile-close:hover {
    background: var(--gray-200, #e5e7eb);
}

.mobile-quick-actions {
    display: flex;
    gap: 0.5rem;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--gray-100, #f3f4f6);
}

.quick-action {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.375rem;
    padding: 0.75rem 0.5rem;
    border-radius: 8px;
    background: var(--gray-50, #f9fafb);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--gray-700, #374151);
    transition: background 0.2s;
}

.quick-action:hover {
    background: var(--gray-100, #f3f4f6);
}

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

.quick-action.primary:hover {
    background: var(--primary-dark);
}

.mobile-nav {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0;
}

.mobile-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-nav > ul > li {
    border-bottom: 1px solid var(--gray-100, #f3f4f6);
}

.mobile-nav > ul > li > a {
    display: block;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--gray-800, #1f2937);
    transition: background 0.2s;
}

.mobile-nav > ul > li > a:hover {
    background: var(--gray-50, #f9fafb);
}

.mobile-nav .has-submenu > a {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mobile-nav .has-submenu > a::after {
    content: '+';
    font-size: 1.25rem;
    color: var(--gray-400, #9ca3af);
    transition: transform 0.2s;
}

.mobile-nav .has-submenu.open > a::after {
    content: '−';
}

.mobile-nav .submenu {
    display: none;
    background: var(--gray-50, #f9fafb);
    padding: 0.5rem 0;
}

.mobile-nav .has-submenu.open .submenu {
    display: block;
}

.mobile-nav .submenu li a {
    display: block;
    padding: 0.75rem 1.25rem 0.75rem 2rem;
    font-size: 0.9375rem;
    color: var(--gray-600, #4b5563);
}

.mobile-nav .submenu li a:hover {
    color: var(--primary);
    background: var(--gray-100, #f3f4f6);
}

.mobile-drawer-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--gray-100, #f3f4f6);
}

.mobile-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.mobile-overlay.open {
    opacity: 1;
    visibility: visible;
}

/* ========================================
   Responsive Navigation
   ======================================== */

@media (max-width: 1024px) {
    .header-top {
        display: none;
    }
    
    .mega-content {
        grid-template-columns: repeat(2, 180px);
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }
    
    .nav-menu {
        display: none;
    }
    
    .nav-actions .search-toggle,
    .nav-actions .nav-icon-link {
        display: none;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-bottom-bar {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 44px;
    }

    .hero-subtitle {
        margin: 0 auto 32px;
    }

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

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

    .hero-visual {
        display: none;
    }

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

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

    .features-image {
        order: -1;
    }

    .pricing-breakdown {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .navbar .btn {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .hero-content h1 {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .section-header h2 {
        font-size: 32px;
    }

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

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

    .upload-features {
        flex-direction: column;
        gap: 16px;
    }

    .features-text h2 {
        font-size: 32px;
    }

    .cta-content h2 {
        font-size: 32px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .upload-area {
        padding: 32px 16px;
    }

    .upload-card {
        margin: 0 -8px;
    }

    .upload-header {
        padding: 24px 24px 0;
    }

    .quote-example {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}