/* SmartBarber - Obsidian Dark Theme Grayscale */

:root {
    /* Obsidian Dark Grayscale Palette */
    --bg-primary: #0d0d0d;
    --bg-secondary: #141414;
    --bg-tertiary: #1a1a1a;
    --bg-card: #1f1f1f;
    --bg-hover: #262626;

    --text-primary: #ffffff;
    --text-secondary: #a3a3a3;
    --text-tertiary: #737373;
    --text-muted: #525252;

    --border-color: #2a2a2a;
    --border-light: #333333;

    --accent: #e5e5e5;
    --accent-hover: #ffffff;
    --accent-muted: #404040;

    /* 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: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

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

html {
    scroll-behavior: smooth;
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-primary);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

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

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

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

.btn-outline {
    background-color: transparent;
    color: var(--text-primary);
    border-color: var(--border-light);
}

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

.btn-ghost {
    background-color: transparent;
    color: var(--text-primary);
    border-color: transparent;
}

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

.btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

.btn-icon {
    font-size: 0.75rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(13, 13, 13, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.25rem;
    font-weight: 700;
}

.brand-icon {
    font-size: 1.5rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    list-style: none;
}

.nav-links a {
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--space-4xl) 0;
    background:
        radial-gradient(ellipse at 50% 0%, rgba(64, 64, 64, 0.15) 0%, transparent 50%),
        var(--bg-primary);
}

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

.hero-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-lg);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.02em;
}

.hero-title .highlight {
    background: linear-gradient(135deg, #ffffff 0%, #737373 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-3xl);
}

.hero-stats {
    display: flex;
    gap: var(--space-3xl);
}

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

.stat-number {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

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

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 280px;
    height: 560px;
    background: linear-gradient(145deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border-light);
    padding: var(--space-md);
    box-shadow:
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

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

.face-placeholder {
    width: 150px;
    height: 180px;
    background: linear-gradient(180deg, var(--bg-tertiary) 0%, var(--bg-card) 100%);
    border-radius: 50% 50% 45% 45%;
    margin: 0 auto var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--border-light);
    position: relative;
    overflow: hidden;
}

.face-icon {
    font-size: 4rem;
    opacity: 0.5;
}

.hair-overlay {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 60px;
    background: linear-gradient(180deg, var(--text-tertiary) 0%, transparent 100%);
    border-radius: 50% 50% 0 0;
    opacity: 0.6;
}

.style-selector {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
}

.style-dot {
    width: 8px;
    height: 8px;
    background-color: var(--border-light);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.style-dot.active {
    width: 24px;
    background-color: var(--text-primary);
}

.floating-card {
    position: absolute;
    background-color: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-sm) var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.card-icon {
    color: var(--text-secondary);
}

.card-1 {
    top: 20%;
    left: -20px;
    animation: float 3s ease-in-out infinite;
}

.card-2 {
    bottom: 30%;
    right: -30px;
    animation: float 3s ease-in-out infinite 1.5s;
}

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

/* Section Styles */
section {
    padding: var(--space-4xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

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

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

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

.feature-card:hover {
    border-color: var(--border-light);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
}

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.feature-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

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

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

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

.step-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--border-light);
    margin-bottom: var(--space-md);
    line-height: 1;
}

.step-content h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.step-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.step-connector {
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, var(--border-color) 0%, var(--border-light) 50%, var(--border-color) 100%);
    margin-top: 2rem;
    flex-shrink: 0;
}

/* Demo Section */
.demo-section {
    background:
        radial-gradient(ellipse at 50% 100%, rgba(64, 64, 64, 0.1) 0%, transparent 50%),
        var(--bg-secondary);
}

.demo-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

.demo-info {
    text-align: left;
}

.demo-info .section-title {
    text-align: left;
}

.demo-info .section-subtitle {
    text-align: left;
    margin: 0 0 var(--space-xl);
}

.demo-features {
    list-style: none;
}

.demo-features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.demo-features .check {
    color: var(--text-primary);
    font-weight: bold;
}

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

.demo-screen {
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
    border: 1px solid var(--border-color);
}

.upload-zone {
    text-align: center;
    color: var(--text-tertiary);
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.upload-zone p {
    margin-bottom: var(--space-md);
    font-size: 0.875rem;
}

.style-options {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
}

.style-option {
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.style-option:hover {
    transform: scale(1.05);
}

.style-option.active .style-preview {
    border-color: var(--text-primary);
}

.style-preview {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-hover) 100%);
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-color);
    margin-bottom: var(--space-sm);
    transition: border-color var(--transition-fast);
}

.style-option span {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Pricing Section */
.pricing {
    background-color: var(--bg-primary);
}

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

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

.pricing-card:hover {
    border-color: var(--border-light);
}

.pricing-card.featured {
    border-color: var(--text-tertiary);
    transform: scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--text-primary);
    color: var(--bg-primary);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--border-color);
}

.pricing-header h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--space-xs);
}

.currency {
    font-size: 1rem;
    color: var(--text-tertiary);
}

.amount {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.period {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--space-xl);
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.pricing-features li.disabled {
    color: var(--text-muted);
}

.pricing-features .check {
    color: var(--text-primary);
}

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

/* Testimonials Section */
.testimonials {
    background-color: var(--bg-secondary);
}

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

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

.testimonial-content {
    margin-bottom: var(--space-lg);
}

.testimonial-content p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--border-light) 100%);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.author-info h4 {
    font-size: 0.9375rem;
    margin-bottom: var(--space-xs);
}

.author-info span {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

/* CTA Section */
.cta {
    background:
        linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2rem;
    margin-bottom: var(--space-md);
}

.cta-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

.cta-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
}

/* Footer */
.footer {
    background-color: var(--bg-primary);
    padding: var(--space-4xl) 0 var(--space-xl);
}

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

.footer-brand p {
    margin-top: var(--space-md);
    font-size: 0.875rem;
    color: var(--text-tertiary);
    max-width: 250px;
}

.social-links {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.social-link {
    width: 36px;
    height: 36px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--bg-hover);
    border-color: var(--border-light);
}

.footer-links h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    transition: color var(--transition-fast);
}

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

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

.footer-bottom p {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

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

.footer-legal a {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

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

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

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

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

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

    .hero-visual {
        margin-top: var(--space-3xl);
    }

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

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .pricing-card.featured {
        transform: none;
    }

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

    .demo-wrapper {
        grid-template-columns: 1fr;
    }

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

    .demo-info .section-title,
    .demo-info .section-subtitle {
        text-align: center;
    }

    .demo-features {
        display: inline-block;
        text-align: left;
    }

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

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

    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

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

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

    .step-connector {
        width: 2px;
        height: 40px;
        background: linear-gradient(180deg, var(--border-color) 0%, var(--border-light) 50%, var(--border-color) 100%);
        margin: var(--space-md) 0;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .cta-buttons {
        flex-direction: column;
    }

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

    .footer-brand {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .footer-brand p {
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
    }

    .floating-card {
        display: none;
    }
}