/*
 * ScanSnap AI Website Styles
 * Apple-inspired glassmorphism design
 */

/* ============================================
   CSS Variables & Theme
   ============================================ */
:root {
    /* Colors */
    --primary-orange: #FF9500;
    --primary-yellow: #FFCC00;
    --primary-gradient: linear-gradient(135deg, #FF9500 0%, #FFCC00 100%);
    --accent-blue: #007AFF;
    --accent-cyan: #32ADE6;

    /* Neutrals */
    --white: #FFFFFF;
    --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;
    --black: #000000;

    /* Glass effect */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-bg-dark: rgba(0, 0, 0, 0.3);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Border radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-800);
    background: linear-gradient(180deg, #f5f5f7 0%, #ffffff 100%);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
    color: var(--primary-yellow);
}

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

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--gray-900);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
    margin-bottom: var(--spacing-md);
}

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

/* ============================================
   Layout
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-3xl) 0;
}

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

.section-header h2 {
    margin-bottom: var(--spacing-md);
}

.section-header p {
    font-size: var(--font-size-lg);
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   Glass Card Component
   ============================================ */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--glass-shadow);
    padding: var(--spacing-xl);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.glass-card-dark {
    background: var(--glass-bg-dark);
    color: var(--white);
}

/* ============================================
   Navigation
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    font-size: var(--font-size-lg);
    color: var(--gray-900);
}

.nav-logo img {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
}

.nav-logo-icon {
    width: 32px;
    height: 32px;
    background: var(--primary-gradient);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
}

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

.nav-links a {
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-links a:hover {
    color: var(--gray-900);
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--black);
    color: var(--white) !important;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: background var(--transition-fast);
}

.nav-cta:hover {
    background: var(--gray-800);
    color: var(--white) !important;
}

.nav-cta svg {
    width: 16px;
    height: 16px;
}

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-800);
    margin: 5px 0;
    transition: var(--transition-fast);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    padding-top: 140px;
    padding-bottom: var(--spacing-3xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 150%;
    height: 100%;
    background: radial-gradient(ellipse at center top, rgba(255, 149, 0, 0.15) 0%, transparent 60%);
    pointer-events: none;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
}

.hero-badge-dot {
    width: 8px;
    height: 8px;
    background: #34C759;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero h1 {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--gray-800);
    color: var(--white);
    transform: scale(1.02);
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--gray-800);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--gray-900);
}

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

.btn-gradient:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 20px rgba(255, 149, 0, 0.4);
    color: var(--white);
}

.btn svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   App Preview / Device Mockup
   ============================================ */
.device-mockup {
    position: relative;
    max-width: 300px;
    margin: 0 auto;
}

.device-frame {
    background: linear-gradient(145deg, #1a1a1a 0%, #0a0a0a 100%);
    border-radius: 50px;
    padding: 12px;
    box-shadow:
        0 50px 100px rgba(0, 0, 0, 0.25),
        0 30px 60px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.device-screen {
    background: linear-gradient(180deg, #1c1c1e 0%, #2c2c2e 100%);
    border-radius: 40px;
    overflow: hidden;
    aspect-ratio: 9/19.5;
    position: relative;
}

.device-notch {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 34px;
    background: #000;
    border-radius: 0 0 20px 20px;
    z-index: 10;
}

.device-screen-content {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ============================================
   Features Section
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    text-align: center;
    padding: var(--spacing-2xl);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    background: var(--primary-gradient);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--white);
}

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

.feature-card p {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
}

/* ============================================
   How It Works Section
   ============================================ */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    counter-reset: step;
}

.step {
    position: relative;
    padding: var(--spacing-xl);
    text-align: center;
}

.step::before {
    counter-increment: step;
    content: counter(step);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-lg);
    background: var(--primary-gradient);
    color: var(--white);
    font-size: var(--font-size-xl);
    font-weight: 700;
    border-radius: 50%;
}

.step h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
}

.step p {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
}

/* ============================================
   Pricing Section
   ============================================ */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    max-width: 800px;
    margin: 0 auto;
}

.pricing-card {
    position: relative;
    padding: var(--spacing-2xl);
    text-align: center;
}

.pricing-card.featured {
    background: var(--black);
    color: var(--white);
}

.pricing-card.featured .glass-card {
    background: transparent;
    border-color: var(--gray-700);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-gradient);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
}

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

.pricing-card.featured h3 {
    color: var(--white);
}

.pricing-price {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.pricing-price span {
    font-size: var(--font-size-lg);
    font-weight: 400;
    color: var(--gray-400);
}

.pricing-description {
    color: var(--gray-500);
    margin-bottom: var(--spacing-xl);
}

.pricing-card.featured .pricing-description {
    color: var(--gray-400);
}

.pricing-features {
    list-style: none;
    text-align: left;
    margin-bottom: var(--spacing-xl);
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    font-size: var(--font-size-sm);
}

.pricing-features li::before {
    content: '';
    width: 20px;
    height: 20px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2334C759'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41L9 16.17z'/%3E%3C/svg%3E") no-repeat center;
    flex-shrink: 0;
}

.pricing-card.featured .pricing-features li::before {
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23FF9500'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41L9 16.17z'/%3E%3C/svg%3E") no-repeat center;
}

/* ============================================
   App Store Badge
   ============================================ */
.app-store-badge {
    display: inline-block;
    transition: transform var(--transition-fast);
}

.app-store-badge:hover {
    transform: scale(1.05);
}

.app-store-badge img {
    height: 50px;
    width: auto;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

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

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.footer-logo-icon {
    width: 36px;
    height: 36px;
    background: var(--primary-gradient);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.footer-brand p {
    color: var(--gray-400);
    font-size: var(--font-size-sm);
}

.footer-column h4 {
    color: var(--white);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-lg);
}

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

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

.footer-links a {
    color: var(--gray-400);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--gray-800);
}

.footer-copyright {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
}

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

.footer-social a {
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

.footer-social a:hover {
    color: var(--white);
}

.footer-social svg {
    width: 24px;
    height: 24px;
}

/* ============================================
   Legal Pages (Privacy, Terms)
   ============================================ */
.legal-page {
    padding-top: 120px;
    padding-bottom: var(--spacing-3xl);
}

.legal-content {
    max-width: 800px;
    margin: 0 auto;
}

.legal-content h1 {
    margin-bottom: var(--spacing-sm);
}

.legal-meta {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-2xl);
}

.legal-content h2 {
    font-size: var(--font-size-2xl);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
}

.legal-content h3 {
    font-size: var(--font-size-xl);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.legal-content p,
.legal-content li {
    color: var(--gray-600);
    margin-bottom: var(--spacing-md);
}

.legal-content ul,
.legal-content ol {
    padding-left: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.legal-content li {
    margin-bottom: var(--spacing-sm);
}

.legal-content strong {
    color: var(--gray-800);
}

.legal-content a {
    color: var(--primary-orange);
}

.legal-content a:hover {
    text-decoration: underline;
}

/* ============================================
   Support Page
   ============================================ */
.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.support-card {
    text-align: center;
}

.support-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
}

.support-card h3 {
    margin-bottom: var(--spacing-sm);
}

.support-card p {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
}

/* FAQ Section */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--gray-200);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) 0;
    background: none;
    border: none;
    font-size: var(--font-size-lg);
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    color: var(--gray-800);
}

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

.faq-question svg {
    width: 24px;
    height: 24px;
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

.faq-item.active .faq-question svg {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding-bottom: var(--spacing-lg);
    color: var(--gray-600);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.5rem;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: var(--spacing-lg);
        border-bottom: 1px solid var(--gray-200);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-toggle {
        display: block;
    }

    .hero {
        padding-top: 100px;
    }

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

    .btn {
        width: 100%;
        max-width: 300px;
    }

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

    .footer-brand {
        max-width: 100%;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

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

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

    .section {
        padding: var(--spacing-2xl) 0;
    }

    .glass-card {
        padding: var(--spacing-lg);
    }
}

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

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }

/* ============================================
   Utility Classes
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-md); }
.mt-2 { margin-top: var(--spacing-xl); }
.mt-3 { margin-top: var(--spacing-2xl); }
.mb-1 { margin-bottom: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-xl); }
.mb-3 { margin-bottom: var(--spacing-2xl); }

.hidden { display: none; }
.visible { display: block; }