/* ============================================
   Todito Landing Page Styles
   Color scheme matches the Flutter app
   ============================================ */

/* CSS Variables - App Color System */
:root {
    /* Dark Theme Colors (Default) */
    --bg-primary: #1A1A2E;
    --bg-surface: #252542;
    --bg-elevated: #2D2D4A;

    /* Primary Purple */
    --primary: #8B5CF6;
    --primary-light: #A78BFA;
    --primary-dark: #7C3AED;

    /* Accent Colors */
    --accent-coral: #F9A8D4;
    --accent-green: #4ADE80;
    --accent-warning: #FBBF24;
    --accent-error: #F87171;

    /* Category Colors */
    --color-purple: #8B5CF6;
    --color-blue: #3B82F6;
    --color-green: #10B981;
    --color-pink: #F472B6;
    --color-orange: #F97316;
    --color-teal: #14B8A6;
    --color-indigo: #6366F1;
    --color-slate: #64748B;

    /* Text Colors */
    --text-primary: #F8F8FC;
    --text-secondary: #9CA3AF;
    --text-muted: #6B7280;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 12px;
    --space-lg: 16px;
    --space-xl: 24px;
    --space-2xl: 32px;
    --space-3xl: 48px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
    min-height: 100vh;
}

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

/* Typography */
h1, h2, h3, h4 {
    line-height: 1.3;
    font-weight: 700;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
}

h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

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

.text-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent-coral) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Links */
a {
    color: var(--primary-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(139, 92, 246, 0.3);
}

.btn-secondary {
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--bg-elevated);
}

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

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

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn:disabled:hover {
    transform: none;
    box-shadow: none;
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--bg-elevated);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo:hover {
    color: var(--text-primary);
}

.logo-icon {
    width: 32px;
    height: 32px;
}

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

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

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

/* Language Switcher */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: 4px;
}

.lang-link {
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
    padding: 2px 6px;
    border-radius: 4px;
    text-decoration: none;
}

.lang-link:hover {
    color: var(--text-primary);
}

.lang-link.active {
    color: var(--text-primary);
    background: var(--bg-elevated);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    padding: calc(56px + var(--space-3xl)) 0 var(--space-3xl);
    text-align: center;
    background: radial-gradient(ellipse at top, var(--bg-surface) 0%, var(--bg-primary) 70%);
}

.hero-content {
    max-width: 700px;
    margin: 0 auto;
}

.hero h1 {
    margin-bottom: var(--space-lg);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--space-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

/* ============================================
   Features Section
   ============================================ */
.features {
    padding: var(--space-3xl) 0;
}

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

.section-subtitle {
    text-align: center;
    font-size: 1.125rem;
    margin-bottom: var(--space-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.feature-card {
    background: var(--bg-surface);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    transition: all var(--transition-normal);
    border: 1px solid transparent;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--bg-elevated);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 40px;
    height: 40px;
    background: rgba(139, 92, 246, 0.15);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-sm);
    color: var(--primary);
}

.feature-icon svg {
    width: 20px;
    height: 20px;
}

/* Icon color variants */
.feature-icon.icon-coral {
    background: rgba(249, 168, 212, 0.15);
    color: var(--accent-coral);
}

.feature-icon.icon-green {
    background: rgba(74, 222, 128, 0.15);
    color: var(--accent-green);
}

.feature-icon.icon-blue {
    background: rgba(59, 130, 246, 0.15);
    color: var(--color-blue);
}

.feature-icon.icon-orange {
    background: rgba(249, 115, 22, 0.15);
    color: var(--color-orange);
}

.feature-icon.icon-teal {
    background: rgba(20, 184, 166, 0.15);
    color: var(--color-teal);
}

.feature-icon.icon-pink {
    background: rgba(244, 114, 182, 0.15);
    color: var(--color-pink);
}

.feature-icon.icon-slate {
    background: rgba(100, 116, 139, 0.15);
    color: var(--color-slate);
}

.feature-icon.icon-indigo {
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-indigo);
}

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

.feature-card p {
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* ============================================
   Accent Colors Section
   ============================================ */
.accent-colors {
    padding: var(--space-3xl) 0;
    background: var(--bg-surface);
}

.color-dots {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.color-dot {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--transition-fast);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.color-dot:hover {
    transform: scale(1.15);
}

/* ============================================
   CTA Section
   ============================================ */
.cta {
    padding: var(--space-3xl) 0;
    text-align: center;
}

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

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

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: var(--space-2xl) 0;
    border-top: 1px solid var(--bg-elevated);
}

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

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.footer-logo .logo-icon {
    width: 28px;
    height: 28px;
}

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

/* ============================================
   Download Page Specific
   ============================================ */
.download-hero {
    padding: calc(56px + var(--space-2xl)) 0 var(--space-xl);
    text-align: center;
    background: radial-gradient(ellipse at top, var(--bg-surface) 0%, var(--bg-primary) 70%);
}

.download-options {
    padding: var(--space-xl) 0 var(--space-3xl);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
    max-width: 800px;
    margin: 0 auto;
}

.download-card {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    border: 1px solid var(--bg-elevated);
    transition: all var(--transition-normal);
}

.download-card:hover {
    border-color: var(--primary);
    box-shadow: 0 16px 48px rgba(139, 92, 246, 0.15);
}

.download-card-disabled {
    opacity: 0.6;
}

.download-card-disabled:hover {
    border-color: var(--bg-elevated);
    box-shadow: none;
}

.download-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-md);
    color: var(--accent-green);
}

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

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

.download-card h2 {
    margin-bottom: var(--space-sm);
}

.download-card > p {
    margin-bottom: var(--space-lg);
}

.download-requirements {
    display: inline-flex;
    background: var(--bg-elevated);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

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

.download-note {
    margin-top: var(--space-md);
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* Installation Section */
.installation {
    padding: var(--space-3xl) 0;
    background: var(--bg-surface);
}

.steps {
    max-width: 600px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.step:last-child {
    margin-bottom: 0;
}

.step-number {
    width: 32px;
    height: 32px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.step-content h3 {
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
}

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

.step-content strong {
    color: var(--text-primary);
}

/* Back to Home */
.back-home {
    padding: var(--space-2xl) 0;
    text-align: center;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .hero {
        padding-top: calc(56px + var(--space-2xl));
        padding-bottom: var(--space-2xl);
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

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

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

    .nav-links > a:not(.btn) {
        display: none;
    }

    .step {
        flex-direction: column;
        align-items: flex-start;
    }

    .download-hero {
        padding-top: calc(56px + var(--space-xl));
        padding-bottom: var(--space-lg);
    }

    .download-hero .hero-subtitle {
        font-size: 1rem;
    }
}

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

    .feature-card {
        padding: var(--space-md);
    }

    .download-card {
        padding: var(--space-lg);
    }
}

/* Legal Pages */
.legal-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 100px var(--space-xl) var(--space-3xl);
}

.legal-content h1 {
    margin-bottom: var(--space-sm);
    font-size: clamp(2rem, 4vw, 2.5rem);
}

.legal-content h1 + p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: var(--space-3xl);
}

.legal-content h2 {
    margin-top: var(--space-3xl);
    margin-bottom: var(--space-lg);
    color: var(--primary-light);
}

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

.legal-content p,
.legal-content ul {
    margin-bottom: var(--space-lg);
    line-height: 1.7;
    color: var(--text-secondary);
}

.legal-content ul {
    padding-left: var(--space-xl);
}

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

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

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

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color var(--transition-fast);
}

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

/* ============================================
   Form Styles
   ============================================ */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.form-input {
    width: 100%;
    padding: 10px var(--space-md);
    background: var(--bg-primary);
    border: 1px solid var(--bg-elevated);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition-fast);
}

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

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

.form-message {
    margin-top: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    display: none;
}

.form-message.success {
    display: block;
    background: rgba(74, 222, 128, 0.1);
    color: var(--accent-green);
    border: 1px solid rgba(74, 222, 128, 0.2);
}

.form-message.error {
    display: block;
    background: rgba(248, 113, 113, 0.1);
    color: var(--accent-error);
    border: 1px solid rgba(248, 113, 113, 0.2);
}