/* ========================================
   InnerChess Landing Page Styles
   Theme Colors from Flutter App
   ======================================== */

:root {
    /* Primary colors - Hot Pink & Magenta */
    --primary-light: #FF1493;
    --primary-dark: #FF69B4;
    
    /* Secondary colors - Bright Purple */
    --secondary-light: #9C27B0;
    --secondary-dark: #BB86FC;
    
    /* Accent colors */
    --accent-cyan: #00E5FF;
    --accent-orange: #FF6F00;
    --accent-yellow: #FFD600;
    
    /* Background colors */
    --background-light: #FFF0F5;
    --background-dark: #0D0221;
    --surface-light: #FFFFFF;
    --surface-dark: #1A0B2E;
    
    /* Text colors */
    --text-primary-light: #1A0B2E;
    --text-primary-dark: #FFF0F5;
    --text-secondary-light: #7B2D8F;
    --text-secondary-dark: #D8A7E5;
    
    /* Card colors */
    --card-light: #FFFFFF;
    --card-dark: #2D1B4E;
    
    /* Defaults */
    --primary: var(--primary-light);
    --secondary: var(--secondary-light);
    --background: var(--background-light);
    --surface: var(--surface-light);
    --text-primary: var(--text-primary-light);
    --text-secondary: var(--text-secondary-light);
    --card: var(--card-light);
}

/* ========================================
   Base Styles
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    background: linear-gradient(135deg, var(--background) 0%, var(--surface) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* ========================================
   Links
   ======================================== */

a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border-bottom: 2px solid transparent;
}

a:hover {
    color: var(--secondary);
    border-bottom-color: var(--secondary);
}

/* Inline text links in paragraphs */
p a {
    border-bottom: 2px solid var(--primary);
}

p a:hover {
    background: linear-gradient(135deg, rgba(255, 20, 147, 0.1) 0%, rgba(156, 39, 176, 0.1) 100%);
    padding: 0.125rem 0.25rem;
    margin: -0.125rem -0.25rem;
    border-radius: 4px;
}

/* ========================================
   Navigation
   ======================================== */

.navbar {
    background: var(--surface);
    box-shadow: 0 2px 10px rgba(255, 20, 147, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.brand-icon {
    font-size: 2rem;
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--primary);
    background: rgba(255, 20, 147, 0.1);
}

.nav-link.active {
    color: var(--primary);
    background: rgba(255, 20, 147, 0.1);
}

/* ========================================
   Content & Pages
   ======================================== */

.content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: calc(100vh - 200px);
}

.page {
    display: none;
    animation: fadeIn 0.5s ease;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    padding: 4rem 0;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.chess-pieces {
    display: flex;
    gap: 2rem;
    font-size: 6rem;
    animation: float 3s ease-in-out infinite;
}

.piece {
    filter: drop-shadow(0 10px 20px rgba(255, 20, 147, 0.3));
}

.piece.king {
    color: var(--primary);
    animation: float 3s ease-in-out infinite;
}

.piece.queen {
    color: var(--secondary);
    animation: float 3s ease-in-out 0.5s infinite;
}

.piece.knight {
    color: var(--accent-cyan);
    animation: float 3s ease-in-out 1s infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 20, 147, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 20, 147, 0.6);
}

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

.btn-secondary:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

.btn-disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
    filter: grayscale(50%);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
}

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

/* ========================================
   App Screenshots Showcase
   ======================================== */

.screenshots-showcase {
    padding: 4rem 0;
    overflow: hidden;
}

.screenshots-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3rem;
    padding: 3rem 1rem;
    perspective: 1000px;
}

.screenshot-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(255, 20, 147, 0.3);
    background: var(--card);
    opacity: 0;
    animation-fill-mode: forwards;
    transition: box-shadow 0.3s ease;
}

.screenshot-card:hover {
    box-shadow: 0 15px 40px rgba(255, 20, 147, 0.5);
}

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

.screenshot-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, rgba(255, 20, 147, 0.95) 0%, rgba(156, 39, 176, 0.95) 100%);
    color: white;
    padding: 0.75rem;
    text-align: center;
    font-weight: 700;
    font-size: 1.125rem;
    opacity: 0;
    transform: translateY(100%);
    transition: all 0.3s ease;
}

.screenshot-card:hover .screenshot-label {
    opacity: 1;
    transform: translateY(0);
}

/* Playful skewed animations for each card */
.card-1 {
    animation: fadeInFloat1 1s ease-out 0.2s forwards, floatSkew1 6s ease-in-out 1.2s infinite;
}

.card-2 {
    animation: fadeInFloat2 1s ease-out 0.4s forwards, floatSkew2 6s ease-in-out 1.4s infinite;
}

.card-3 {
    animation: fadeInFloat3 1s ease-out 0.6s forwards, floatSkew3 6s ease-in-out 1.6s infinite;
}

.card-4 {
    animation: fadeInFloat4 1s ease-out 0.8s forwards, floatSkew4 6s ease-in-out 1.8s infinite;
}

/* Initial fade-in animations */
@keyframes fadeInFloat1 {
    0% {
        opacity: 0;
        transform: translateY(20px) rotate(-2deg);
    }
    100% {
        opacity: 1;
        transform: translateY(0) rotate(-2deg);
    }
}

@keyframes fadeInFloat2 {
    0% {
        opacity: 0;
        transform: translateY(20px) rotate(2deg);
    }
    100% {
        opacity: 1;
        transform: translateY(0) rotate(2deg);
    }
}

@keyframes fadeInFloat3 {
    0% {
        opacity: 0;
        transform: translateY(20px) rotate(-1deg);
    }
    100% {
        opacity: 1;
        transform: translateY(0) rotate(-1deg);
    }
}

@keyframes fadeInFloat4 {
    0% {
        opacity: 0;
        transform: translateY(20px) rotate(1deg);
    }
    100% {
        opacity: 1;
        transform: translateY(0) rotate(1deg);
    }
}

/* Looping float animations */
@keyframes floatSkew1 {
    0%, 100% {
        transform: translateY(0) rotate(-2deg);
    }
    50% {
        transform: translateY(-8px) rotate(2deg);
    }
}

@keyframes floatSkew2 {
    0%, 100% {
        transform: translateY(0) rotate(2deg);
    }
    50% {
        transform: translateY(-10px) rotate(-2deg);
    }
}

@keyframes floatSkew3 {
    0%, 100% {
        transform: translateY(0) rotate(-1deg);
    }
    50% {
        transform: translateY(-9px) rotate(1deg);
    }
}

@keyframes floatSkew4 {
    0%, 100% {
        transform: translateY(0) rotate(1deg);
    }
    50% {
        transform: translateY(-6px) rotate(-1deg);
    }
}

/* ========================================
   Features Section
   ======================================== */

.features-preview {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--card);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(255, 20, 147, 0.2);
    border-color: var(--primary);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ========================================
   Features Page
   ======================================== */

.page-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 0;
}

.page-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.feature-detail {
    margin-bottom: 3rem;
}

.feature-detail h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-detail p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.cta-section {
    text-align: center;
    padding: 4rem 0;
    margin-top: 4rem;
    border-top: 2px solid rgba(255, 20, 147, 0.2);
}

.cta-section h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

/* ========================================
   Privacy Policy Page
   ======================================== */

.privacy-content {
    line-height: 1.8;
}

.privacy-content h1 {
    margin-bottom: 1rem;
}

.last-updated {
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 2rem;
}

.privacy-content h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.privacy-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.privacy-content p {
    margin-bottom: 1rem;
    font-size: 1.05rem;
}

.privacy-content ul {
    margin: 1rem 0 1rem 2rem;
}

.privacy-content li {
    margin-bottom: 0.5rem;
}

.privacy-content a {
    color: var(--primary);
    font-weight: 600;
    border-bottom: 2px solid var(--primary);
    transition: all 0.3s ease;
}

.privacy-content a:hover {
    color: var(--secondary);
    border-bottom-color: var(--secondary);
    background: linear-gradient(135deg, rgba(255, 20, 147, 0.1) 0%, rgba(156, 39, 176, 0.1) 100%);
    padding: 0.125rem 0.25rem;
    margin: -0.125rem -0.25rem;
    border-radius: 4px;
}

.privacy-content hr {
    margin: 3rem 0;
    border: none;
    border-top: 2px solid rgba(255, 20, 147, 0.2);
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.summary-item {
    background: linear-gradient(135deg, rgba(255, 20, 147, 0.1) 0%, rgba(156, 39, 176, 0.1) 100%);
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary);
    font-weight: 500;
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background: var(--surface);
    padding: 2rem;
    margin-top: 4rem;
    border-top: 2px solid rgba(255, 20, 147, 0.1);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    color: var(--text-secondary);
}

.footer-link {
    color: var(--primary);
    font-weight: 600;
    margin: 0 1rem;
    transition: all 0.3s ease;
    border-bottom: 2px solid transparent;
}

.footer-link:hover {
    color: var(--secondary);
    border-bottom-color: var(--secondary);
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 768px) {
    .hero {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .chess-pieces {
        font-size: 4rem;
        gap: 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-menu {
        gap: 1rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        text-align: center;
        justify-content: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .summary-grid {
        grid-template-columns: 1fr;
    }
    
    .screenshots-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .content {
        padding: 1rem;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .nav-brand {
        font-size: 1.25rem;
    }
    
    .brand-icon {
        font-size: 1.5rem;
    }
    
    .screenshots-container {
        grid-template-columns: 1fr;
    }
}