/* Droid-ify Website Styles */
/* Material 3 Design System with colors extracted from app theme */

:root {
    /* Primary colors from Material 3 Dark Theme */
    --md-primary: #A6D394;
    --md-on-primary: #13380A;
    --md-primary-container: #2A4F1F;
    --md-on-primary-container: #C2EFAE;
    
    /* Secondary colors */
    --md-secondary: #BBCBB1;
    --md-on-secondary: #273421;
    --md-secondary-container: #3D4B36;
    --md-on-secondary-container: #D7E8CC;
    
    /* Tertiary colors */
    --md-tertiary: #FBBA73;
    --md-on-tertiary: #492900;
    --md-tertiary-container: #683D00;
    --md-on-tertiary-container: #FFDCBC;
    
    /* Error colors */
    --md-error: #FFB4AB;
    --md-on-error: #690005;
    --md-error-container: #93000A;
    --md-on-error-container: #FFDAD6;
    
    /* Background & Surface */
    --md-background: #11140F;
    --md-on-background: #E1E4DA;
    --md-surface: #11140F;
    --md-on-surface: #E1E4DA;
    --md-surface-dim: #11140F;
    --md-surface-bright: #373A34;
    --md-surface-container-lowest: #0C0F0A;
    --md-surface-container-low: #191D17;
    --md-surface-container: #1D211B;
    --md-surface-container-high: #272B25;
    --md-surface-container-highest: #32362F;
    
    /* Surface variants */
    --md-surface-variant: #43483F;
    --md-on-surface-variant: #C3C8BC;
    
    /* Outline */
    --md-outline: #8D9387;
    --md-outline-variant: #43483F;
    
    /* Inverse */
    --md-inverse-surface: #E1E4DA;
    --md-inverse-on-surface: #2E322B;
    --md-inverse-primary: #416835;
    
    /* Banner */
    --banner-bg: #F5F5F0;
    --banner-text: #191D17;
    
    /* Border & Shadow */
    --border-subtle: rgba(227, 232, 218, 0.12);
    --shadow-elevation-1: 0 1px 2px rgba(0, 0, 0, 0.3), 0 1px 3px 1px rgba(0, 0, 0, 0.15);
    --shadow-elevation-2: 0 1px 2px rgba(0, 0, 0, 0.3), 0 2px 6px 2px rgba(0, 0, 0, 0.15);
    --shadow-elevation-3: 0 4px 8px 3px rgba(0, 0, 0, 0.15), 0 1px 3px rgba(0, 0, 0, 0.3);
    
    /* Radius - Material 3 shape scale */
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 28px;
    --radius-full: 9999px;
    
    /* Material 3 Motion */
    --motion-standard: cubic-bezier(0.2, 0.0, 0, 1.0);
    --motion-standard-decelerate: cubic-bezier(0, 0, 0, 1);
    --motion-standard-accelerate: cubic-bezier(0.3, 0, 1, 1);
    --motion-emphasized: cubic-bezier(0.2, 0.0, 0, 1.0);
    --motion-emphasized-decelerate: cubic-bezier(0.05, 0.7, 0.1, 1.0);
    --motion-emphasized-accelerate: cubic-bezier(0.3, 0.0, 0.8, 0.15);
    
    --duration-short1: 50ms;
    --duration-short2: 100ms;
    --duration-short3: 150ms;
    --duration-short4: 200ms;
    --duration-medium1: 250ms;
    --duration-medium2: 300ms;
    --duration-medium3: 350ms;
    --duration-medium4: 400ms;
    --duration-long1: 450ms;
    --duration-long2: 500ms;
    
    /* Typography - System fonts */
    --font-plain: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: ui-monospace, 'SF Mono', 'Cascadia Code', 'Segoe UI Mono', Menlo, Monaco, Consolas, monospace;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-plain);
    background: var(--md-background);
    color: var(--md-on-background);
    line-height: 1.5;
    min-height: 100vh;
}

/* Update Banner */
.update-banner {
    background: var(--banner-bg);
    color: var(--banner-text);
    text-align: center;
    padding: 0.75rem 1rem;
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 0.875rem;
    letter-spacing: -0.01em;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    transform: translateY(-100%);
    opacity: 0;
    transition: 
        transform var(--duration-medium2) var(--motion-emphasized-decelerate),
        opacity var(--duration-medium1) var(--motion-standard);
}

.update-banner.visible {
    transform: translateY(0);
    opacity: 1;
}

.banner-link {
    color: var(--md-inverse-primary);
    text-decoration: none;
    margin-left: 0.5rem;
    font-weight: 600;
    transition: opacity var(--duration-short3) var(--motion-standard);
    border-bottom: 1px solid currentColor;
}

.banner-link:hover {
    opacity: 0.8;
}

.banner-link:active {
    opacity: 0.6;
}

/* Deep Link Overlay */
.deep-link-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 200;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.deep-link-overlay.visible {
    display: flex;
}

.main-content.hidden {
    display: none;
}

.deep-link-card {
    background: var(--md-surface-container-high);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    text-align: center;
    max-width: 400px;
    width: 100%;
    box-shadow: var(--shadow-elevation-3);
    animation: dialogEnter var(--duration-medium2) var(--motion-emphasized-decelerate);
}

@keyframes dialogEnter {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.deep-link-icon {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
}

.deep-link-card h2 {
    font-family: var(--font-plain);
    font-weight: 500;
    font-size: 1.5rem;
    color: var(--md-on-surface);
    margin-bottom: 0.75rem;
}

.deep-link-package {
    font-family: var(--font-mono);
    color: var(--md-primary);
    font-size: 0.8rem;
    background: var(--md-surface-container);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    word-break: break-all;
}

.deep-link-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.deep-link-dismiss {
    color: var(--md-primary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: opacity var(--duration-short3) var(--motion-standard);
}

.deep-link-dismiss:hover {
    opacity: 0.8;
}

/* Buttons - Material 3 Filled & Tonal */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.5rem;
    border-radius: var(--radius-full);
    font-family: var(--font-plain);
    font-weight: 500;
    font-size: 0.875rem;
    letter-spacing: 0.01em;
    text-decoration: none;
    transition: 
        background var(--duration-short3) var(--motion-standard),
        box-shadow var(--duration-short3) var(--motion-standard),
        transform var(--duration-short2) var(--motion-standard);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: currentColor;
    opacity: 0;
    transition: opacity var(--duration-short3) var(--motion-standard);
}

.btn:hover::after {
    opacity: 0.08;
}

.btn:active::after {
    opacity: 0.12;
}

.btn:active {
    transform: scale(0.98);
}

.btn-icon {
    width: 18px;
    height: 18px;
}

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

.btn-secondary {
    background: var(--md-surface-container-highest);
    color: var(--md-on-surface);
}

.btn-download {
    background: var(--md-primary);
    color: var(--md-on-primary);
    padding: 0.875rem 2rem;
    font-size: 0.9375rem;
    box-shadow: var(--shadow-elevation-1);
}

.btn-download:hover {
    box-shadow: var(--shadow-elevation-2);
}

.btn-fdroid {
    background: var(--md-secondary-container);
    color: var(--md-on-secondary-container);
    padding: 0.875rem 2rem;
    font-size: 0.9375rem;
}

/* Hero Section */
.hero {
    background: var(--md-surface);
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4rem 1.5rem;
    position: relative;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    animation: contentEnter var(--duration-long1) var(--motion-emphasized-decelerate);
}

@keyframes contentEnter {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-logo {
    width: 112px;
    height: 112px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-elevation-2);
    margin-bottom: 1.5rem;
}

.hero-title {
    font-family: var(--font-plain);
    font-size: clamp(2.5rem, 8vw, 3.5rem);
    font-weight: 400;
    color: var(--md-on-surface);
    margin-bottom: 0.25rem;
    letter-spacing: -0.02em;
}

.hero-tagline {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--md-primary);
    font-weight: 500;
    margin-bottom: 1rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.hero-description {
    max-width: 420px;
    margin: 0 auto 2rem;
    color: var(--md-on-surface-variant);
    font-size: 1rem;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

/* Quick Links */
.quick-links {
    display: flex;
    justify-content: center;
    gap: 0.25rem;
    padding: 1rem;
    background: var(--md-surface-container);
    border-bottom: 1px solid var(--border-subtle);
    flex-wrap: wrap;
}

.quick-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    border-radius: var(--radius-full);
    color: var(--md-on-surface-variant);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    transition: 
        background var(--duration-short3) var(--motion-standard),
        color var(--duration-short3) var(--motion-standard);
}

.quick-link:hover {
    background: var(--md-surface-container-high);
    color: var(--md-on-surface);
}

.quick-link:active {
    background: var(--md-surface-container-highest);
}

.quick-link svg {
    width: 18px;
    height: 18px;
}

/* Section Styling */
.section-title {
    font-family: var(--font-plain);
    font-size: 1.75rem;
    font-weight: 400;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--md-on-surface);
}

/* Screenshots */
.screenshots {
    padding: 4rem 1.5rem;
    background: var(--md-surface);
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    max-width: 800px;
    margin: 0 auto;
}

.screenshots-grid img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-elevation-1);
}

@media (max-width: 768px) {
    .screenshots-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Features */
.features {
    padding: 4rem 1.5rem;
    background: var(--md-surface-container-low);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
    max-width: 1000px;
    margin: 0 auto;
}

.feature-card {
    background: var(--md-surface-container);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: background var(--duration-short3) var(--motion-standard);
}

.feature-card:hover {
    background: var(--md-surface-container-high);
}

.feature-icon {
    width: 40px;
    height: 40px;
    background: var(--md-primary-container);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.feature-icon svg {
    width: 20px;
    height: 20px;
    color: var(--md-on-primary-container);
}

.feature-card h3 {
    font-family: var(--font-plain);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--md-on-surface);
}

.feature-card p {
    color: var(--md-on-surface-variant);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* Contribute Section */
.contribute {
    padding: 4rem 1.5rem;
    background: var(--md-surface);
}

.contribute-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

.contribute-card {
    background: var(--md-surface-container);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center;
    text-decoration: none;
    color: inherit;
    transition: background var(--duration-short3) var(--motion-standard);
}

.contribute-card:hover {
    background: var(--md-surface-container-high);
}

.contribute-card svg {
    width: 32px;
    height: 32px;
    color: var(--md-tertiary);
    margin-bottom: 0.75rem;
}

.contribute-card h3 {
    font-family: var(--font-plain);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.375rem;
    color: var(--md-on-surface);
}

.contribute-card p {
    color: var(--md-on-surface-variant);
    font-size: 0.8125rem;
    line-height: 1.5;
}

/* Footer */
.footer {
    background: var(--md-surface-container);
    border-top: 1px solid var(--border-subtle);
    padding: 2rem 1.5rem;
    text-align: center;
}

.footer-copyright {
    color: var(--md-on-surface-variant);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.footer-signature {
    font-size: 0.75rem;
    color: var(--md-outline);
}

.footer-signature code {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    background: var(--md-surface-container-high);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-xs);
    display: inline-block;
    margin-top: 0.25rem;
    word-break: break-all;
}

/* Responsive Adjustments */
@media (max-width: 640px) {
    .hero {
        min-height: auto;
        padding: 3rem 1rem;
    }
    
    .hero-logo {
        width: 88px;
        height: 88px;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-download, .btn-fdroid {
        width: 100%;
        max-width: 260px;
    }
    
    .quick-link span {
        display: none;
    }
    
    .quick-link {
        padding: 0.75rem;
    }
    
    .features, .contribute, .screenshots {
        padding: 3rem 1rem;
    }
    
    .deep-link-card {
        padding: 2rem 1.5rem;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus states - Material 3 focus ring */
a:focus-visible, button:focus-visible {
    outline: 2px solid var(--md-primary);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: rgba(166, 211, 148, 0.3);
    color: var(--md-on-surface);
}