/* ===== ANVIL LANDING PAGE STYLES ===== */
/* Dark minimalist design inspired by Duolingo */

/* ===== CSS Variables ===== */
:root {
    /* Colors - Duolingo-inspired dark theme */
    --bg-primary: #121212;
    --bg-secondary: #1E1E1E;
    --bg-tertiary: #2A2A2A;
    --bg-elevated: #333333;
    
    /* Accent Colors */
    --forge-orange: #FF6B35;
    --forge-orange-glow: rgba(255, 107, 53, 0.3);
    --electric-blue: #00D4FF;
    --electric-blue-glow: rgba(0, 212, 255, 0.3);
    --duolingo-green: #58CC02;
    --duolingo-green-glow: rgba(88, 204, 2, 0.3);
    
    /* Text Colors */
    --text-primary: #FFFFFF;
    --text-secondary: #B0B0B0;
    --text-muted: #757575;
    
    /* Borders */
    --border-color: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.2);
    
    /* Gradients */
    --gradient-orange: linear-gradient(135deg, #FF6B35 0%, #FF8F65 100%);
    --gradient-blue: linear-gradient(135deg, #00D4FF 0%, #00A3FF 100%);
    --gradient-green: linear-gradient(135deg, #58CC02 0%, #7BDB3F 100%);
    --gradient-dark: linear-gradient(180deg, #1E1E1E 0%, #121212 100%);
    
    /* Typography */
    --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow-orange: 0 0 40px rgba(255, 107, 53, 0.3);
    --shadow-glow-blue: 0 0 40px rgba(0, 212, 255, 0.3);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

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

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

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

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

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

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

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-family: var(--font-display);
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-family: var(--font-display);
}

h3 {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
}

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

.gradient-text {
    background: var(--gradient-orange);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight {
    color: var(--forge-orange);
}

/* ===== Layout ===== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

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

/* ===== Components ===== */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-orange);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-orange);
}

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

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--text-secondary);
}

.btn-large {
    padding: var(--space-lg) var(--space-2xl);
    font-size: 1.125rem;
}

/* Section Headers */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-3xl);
}

.section-tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--forge-orange);
    margin-bottom: var(--space-md);
}

.section-title {
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(18, 18, 18, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-icon {
    font-size: 1.75rem;
}

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

.nav-links a:not(.btn) {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-links a:not(.btn):hover {
    color: var(--text-primary);
}

.nav-cta {
    padding: var(--space-sm) var(--space-lg) !important;
}

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

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

.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    padding: var(--space-lg);
    flex-direction: column;
    gap: var(--space-md);
    border-bottom: 1px solid var(--border-color);
    z-index: 999;
}

.mobile-menu a {
    padding: var(--space-md);
    color: var(--text-secondary);
    font-weight: 500;
}

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

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    position: relative;
    overflow: hidden;
}

.hero-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.hero-content {
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    margin-bottom: var(--space-xl);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.badge-icon {
    font-size: 1rem;
}

.hero-title {
    margin-bottom: var(--space-lg);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    max-width: 520px;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

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

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--forge-orange);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    z-index: 2;
}

.phone-mockup {
    position: relative;
    max-width: 320px;
    margin: 0 auto;
}

.phone-frame {
    background: var(--bg-secondary);
    border-radius: 36px;
    padding: 12px;
    border: 3px solid var(--bg-tertiary);
    box-shadow: var(--shadow-lg), 0 0 80px rgba(255, 107, 53, 0.15);
}

.phone-notch {
    width: 100px;
    height: 28px;
    background: var(--bg-primary);
    border-radius: 0 0 16px 16px;
    margin: 0 auto 12px;
}

.phone-screen {
    background: var(--bg-primary);
    border-radius: 24px;
    overflow: hidden;
}

.phone-screen .screen-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    object-position: top;
    max-height: 580px;
}

/* Floating Cards */
.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    animation: float 3s ease-in-out infinite;
}

.card-1 {
    top: 20%;
    right: -30px;
    animation-delay: 0s;
}

.card-2 {
    bottom: 30%;
    left: -40px;
    animation-delay: 1.5s;
}

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

.floating-icon {
    font-size: 1.25rem;
}

.floating-text {
    font-size: 0.875rem;
    font-weight: 500;
}

/* Hero Background */
.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--forge-orange);
    top: -200px;
    right: -200px;
    opacity: 0.15;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--electric-blue);
    bottom: -100px;
    left: -100px;
    opacity: 0.1;
}

.grid-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
}

/* ===== Features Section ===== */
.features {
    background: var(--bg-secondary);
}

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

.feature-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-base);
}

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

.feature-large {
    grid-column: span 3;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: start;
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
}

.icon-orange {
    background: rgba(255, 107, 53, 0.15);
    color: var(--forge-orange);
}

.icon-blue {
    background: rgba(0, 212, 255, 0.15);
    color: var(--electric-blue);
}

.icon-green {
    background: rgba(88, 204, 2, 0.15);
    color: var(--duolingo-green);
}

.feature-card h3 {
    margin-bottom: var(--space-sm);
}

.feature-card p {
    font-size: 0.9375rem;
}

/* Prompt Preview */
.prompt-preview {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.prompt-item {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    border-left: 3px solid var(--forge-orange);
}

.prompt-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--forge-orange);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.prompt-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* ===== Screenshots Gallery ===== */
.screenshots-section {
    background: var(--bg-primary);
    overflow: hidden;
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--space-lg);
    align-items: start;
}

.screenshot-card {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.screenshot-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--forge-orange);
}

.screenshot-card img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.screenshot-card.main-screenshot {
    grid-column: span 4;
    grid-row: span 2;
}

.screenshot-card:not(.main-screenshot):not(.spark-card-screenshot) {
    grid-column: span 4;
}

.screenshot-card.spark-card-screenshot {
    grid-column: span 4;
}

.screenshot-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-lg);
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.label-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
}

.label-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

@media (max-width: 1024px) {
    .screenshots-grid {
        grid-template-columns: repeat(6, 1fr);
    }
    
    .screenshot-card.main-screenshot {
        grid-column: span 3;
        grid-row: span 1;
    }
    
    .screenshot-card:not(.main-screenshot):not(.spark-card-screenshot) {
        grid-column: span 3;
    }
    
    .screenshot-card.spark-card-screenshot {
        grid-column: span 6;
    }
}

@media (max-width: 768px) {
    .screenshots-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-md);
    }
    
    .screenshot-card.main-screenshot,
    .screenshot-card:not(.main-screenshot):not(.spark-card-screenshot),
    .screenshot-card.spark-card-screenshot {
        grid-column: span 1;
        grid-row: span 1;
    }
    
    .screenshot-card.spark-card-screenshot {
        grid-column: span 2;
    }
}

/* ===== How It Works ===== */
.how-it-works {
    background: var(--bg-primary);
}

.steps-container {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: var(--space-xl);
}

.step {
    flex: 1;
    max-width: 300px;
    text-align: center;
}

.step-number {
    font-size: 4rem;
    font-weight: 700;
    font-family: var(--font-display);
    background: var(--gradient-orange);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-md);
    line-height: 1;
}

.step-visual {
    margin-bottom: var(--space-lg);
}

.step-icon {
    width: 80px;
    height: 80px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    color: var(--forge-orange);
}

.step-content h3 {
    margin-bottom: var(--space-sm);
}

.step-content p {
    font-size: 0.9375rem;
}

.step-connector {
    display: flex;
    align-items: center;
    padding-top: 120px;
    color: var(--border-color);
}

/* ===== Demo Section ===== */
.demo-section {
    background: var(--bg-secondary);
}

.demo-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: start;
}

.demo-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}

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

.demo-category {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
}

.category-dot {
    width: 8px;
    height: 8px;
    background: var(--forge-orange);
    border-radius: 50%;
}

.demo-date {
    font-size: 0.875rem;
    color: var(--text-muted);
}

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

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

.form-group label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.label-icon {
    font-size: 1.125rem;
}

.form-hint {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

.form-group textarea {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9375rem;
    resize: vertical;
    min-height: 80px;
    transition: border-color var(--transition-fast);
}

.form-group textarea:focus {
    outline: none;
    border-color: var(--forge-orange);
}

.form-group textarea::placeholder {
    color: var(--text-muted);
}

.demo-submit {
    margin-top: var(--space-md);
}

/* Demo Preview */
.demo-preview {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    position: sticky;
    top: 100px;
}

.preview-header {
    margin-bottom: var(--space-lg);
}

.preview-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--electric-blue);
}

.preview-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.preview-item {
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.preview-item:last-child {
    border-bottom: none;
}

.preview-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

.preview-text {
    font-size: 0.9375rem;
    color: var(--text-primary);
    min-height: 24px;
}

.preview-cta {
    text-align: center;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-color);
}

.preview-cta p {
    margin-bottom: var(--space-md);
    font-size: 0.9375rem;
}

/* ===== Privacy Section ===== */
.privacy-section {
    background: var(--bg-primary);
}

.privacy-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-2xl);
    align-items: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-3xl);
}

.privacy-icon {
    width: 120px;
    height: 120px;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--electric-blue);
}

.privacy-content h2 {
    margin-bottom: var(--space-md);
}

.privacy-content > p {
    margin-bottom: var(--space-lg);
    font-size: 1.0625rem;
}

.privacy-list {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.privacy-list li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-secondary);
}

.privacy-list li svg {
    color: var(--duolingo-green);
    flex-shrink: 0;
}

/* ===== Signup Section ===== */
.signup-section {
    background: var(--bg-secondary);
}

.signup-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-3xl);
}

.signup-content .section-tag {
    margin-bottom: var(--space-md);
}

.signup-content h2 {
    margin-bottom: var(--space-md);
}

.signup-content > p {
    margin-bottom: var(--space-xl);
    font-size: 1.0625rem;
}

.signup-form {
    margin-bottom: var(--space-xl);
}

.form-row {
    display: flex;
    gap: var(--space-md);
}

.form-row input {
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-row input:focus {
    outline: none;
    border-color: var(--forge-orange);
}

.form-row input::placeholder {
    color: var(--text-muted);
}

.form-disclaimer {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-md);
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.form-disclaimer svg {
    flex-shrink: 0;
    color: var(--text-secondary);
}

/* Signup Success */
.signup-success {
    display: none;
    text-align: center;
    padding: var(--space-xl);
    background: rgba(88, 204, 2, 0.1);
    border-radius: var(--radius-lg);
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.signup-success.active {
    display: block;
}

.signup-form.hidden {
    display: none;
}

.success-icon {
    color: var(--duolingo-green);
    margin-bottom: var(--space-md);
}

.signup-success h3 {
    margin-bottom: var(--space-sm);
}

/* Testimonials */
.signup-visual {
    position: relative;
}

.testimonial-stack {
    position: relative;
}

.testimonial-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}

.testimonial-card.card-offset {
    margin-top: calc(-1 * var(--space-xl));
    margin-left: var(--space-xl);
    background: var(--bg-tertiary);
}

.testimonial-stars {
    margin-bottom: var(--space-md);
}

.testimonial-card p {
    font-style: italic;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.testimonial-author {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid var(--border-color);
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    margin-bottom: var(--space-md);
}

.footer-brand p {
    font-size: 0.9375rem;
}

.footer-links {
    display: flex;
    gap: var(--space-4xl);
}

.footer-column h4 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: var(--space-md);
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

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

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

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
        text-align: center;
    }
    
    .hero-content {
        order: 1;
    }
    
    .hero-visual {
        order: 0;
    }
    
    .hero-subtitle {
        max-width: 100%;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .feature-large {
        grid-column: span 2;
        grid-template-columns: 1fr;
    }
    
    .demo-container {
        grid-template-columns: 1fr;
    }
    
    .demo-preview {
        position: static;
    }
    
    .privacy-card {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .privacy-icon {
        margin: 0 auto;
    }
    
    .privacy-list {
        justify-items: center;
    }
    
    .signup-card {
        grid-template-columns: 1fr;
    }
    
    .signup-visual {
        display: none;
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
    }
    
    section {
        padding: var(--space-3xl) 0;
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-large {
        grid-column: span 1;
    }
    
    .steps-container {
        flex-direction: column;
        gap: var(--space-2xl);
    }
    
    .step-connector {
        display: none;
    }
    
    .step {
        max-width: 100%;
    }
    
    .privacy-list {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        flex-direction: column;
    }
    
    .form-row .btn {
        width: 100%;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--space-2xl);
    }
    
    .footer-links {
        gap: var(--space-2xl);
    }
    
    .phone-mockup {
        max-width: 280px;
    }
    
    .floating-card {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .stat-divider {
        width: 40px;
        height: 1px;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    .btn-large {
        padding: var(--space-md) var(--space-xl);
        font-size: 1rem;
    }
}

/* ===== Loading States ===== */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: inherit;
    border-radius: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
}

.spinner {
    width: 24px;
    height: 24px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ===== Utility Classes ===== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}