/**
 * Verbi - Home Page CSS
 * Landing Page Styling
 */

/* ============================================
   HOME PAGE NAVIGATION
   ============================================ */

.home-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 var(--space-6);
    z-index: 1000;
    background: rgba(13, 15, 26, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-light);
}

[data-theme="alpine"] .home-nav {
    background: rgba(245, 247, 255, 0.8);
}

.nav-container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
}

.nav-logo svg {
    width: 36px;
    height: 36px;
}

.nav-logo-text {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--color-text);
}

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

.nav-links {
    display: none;
    align-items: center;
    gap: var(--space-8);
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
}

.nav-link {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.lang-switcher {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-lg);
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-btn:hover {
    background: var(--color-surface-hover);
    color: var(--color-text);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-2);
    min-width: 150px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-fast);
}

.lang-switcher:hover .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.lang-option:hover {
    background: var(--color-surface-hover);
}

.lang-option.active {
    background: var(--color-primary-muted);
    color: var(--color-primary);
}

/* Theme toggle */
.theme-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--color-surface-hover);
    color: var(--color-text);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-normal);
}

.theme-toggle:hover svg {
    transform: rotate(15deg);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: var(--space-24) var(--space-4) var(--space-16);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: var(--gradient-bg);
    z-index: 0;
}

.hero-mesh {
    position: absolute;
    inset: 0;
    opacity: 0.4;
}

.hero-particles {
    position: absolute;
    inset: 0;
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: var(--max-width);
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
    align-items: center;
}

@media (min-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr 1fr;
    }
}

.hero-text {
    text-align: center;
}

@media (min-width: 1024px) {
    .hero-text {
        text-align: left;
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--color-primary-muted);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    color: var(--color-primary);
    margin-bottom: var(--space-6);
}

.hero-title {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: var(--font-extrabold);
    line-height: 1.1;
    margin-bottom: var(--space-6);
    letter-spacing: var(--tracking-tight);
}

@media (min-width: 768px) {
    .hero-title {
        font-size: var(--text-6xl);
    }
}

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

.hero-subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
    max-width: 500px;
    margin-bottom: var(--space-8);
    line-height: var(--leading-relaxed);
}

@media (min-width: 1024px) {
    .hero-subtitle {
        margin-left: 0;
        margin-right: auto;
    }
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

@media (min-width: 640px) {
    .hero-cta {
        flex-direction: row;
        justify-content: center;
    }
}

@media (min-width: 1024px) {
    .hero-cta {
        justify-content: flex-start;
    }
}

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

.hero-illustration {
    position: relative;
    width: 100%;
    max-width: 500px;
}

.floating-card {
    position: absolute;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-4);
    font-family: var(--font-german);
    font-size: var(--text-lg);
    color: var(--color-text);
    animation: floatSlow 4s ease-in-out infinite;
}

.floating-card:nth-child(1) {
    top: 10%;
    left: 0;
    animation-delay: 0s;
}

.floating-card:nth-child(2) {
    top: 40%;
    right: 0;
    animation-delay: 1s;
}

.floating-card:nth-child(3) {
    bottom: 20%;
    left: 10%;
    animation-delay: 2s;
}

.floating-card .card-article {
    display: block;
    font-size: var(--text-xs);
    color: var(--color-primary);
    margin-bottom: var(--space-1);
}

.hero-center-graphic {
    width: 280px;
    height: 280px;
    position: relative;
    z-index: 1;
}

.hero-center-circle {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: var(--gradient-primary);
    opacity: 0.1;
    animation: pulse 4s ease-in-out infinite;
}

.hero-center-icon {
    position: absolute;
    inset: 40px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
}

.hero-center-icon svg {
    width: 80px;
    height: 80px;
    color: white;
}

/* ============================================
   STATS BAR
   ============================================ */

.stats-bar {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-8) 0;
}

.stats-bar-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.stat-item {
    text-align: center;
    padding: var(--space-4);
    position: relative;
}

.stat-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    height: 40px;
    width: 1px;
    background: var(--color-border);
}

@media (max-width: 640px) {
    .stat-item:not(:last-child)::after {
        display: none;
    }
}

.stat-number {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--color-text);
    margin-bottom: var(--space-1);
}

@media (min-width: 768px) {
    .stat-number {
        font-size: var(--text-4xl);
    }
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

/* ============================================
   FEATURES SECTION
   ============================================ */

.features-section {
    padding: var(--space-24) var(--space-4);
    background: var(--color-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
    max-width: var(--max-width);
    margin: 0 auto;
}

@media (min-width: 640px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ============================================
   LEARNING PATH PREVIEW
   ============================================ */

.path-preview {
    padding: var(--space-24) var(--space-4);
    background: var(--color-surface);
}

.path-scroll {
    display: flex;
    gap: var(--space-6);
    overflow-x: auto;
    padding: var(--space-8) var(--space-4);
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
}

.path-scroll::-webkit-scrollbar {
    height: 8px;
}

.path-node {
    flex-shrink: 0;
    width: 200px;
    padding: var(--space-6);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    text-align: center;
    scroll-snap-align: start;
    transition: all var(--transition-normal);
}

.path-node:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.path-node.locked {
    opacity: 0.5;
    cursor: not-allowed;
}

.path-node-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-4);
    padding: var(--space-3);
    background: var(--color-primary-muted);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
}

.path-node-title {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.path-node-level {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* ============================================
   HOW IT WORKS
   ============================================ */

.how-it-works {
    padding: var(--space-24) var(--space-4);
    background: var(--color-bg);
}

.steps-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    max-width: var(--max-width);
    margin: 0 auto;
    position: relative;
}

@media (min-width: 768px) {
    .steps-container {
        grid-template-columns: repeat(3, 1fr);
    }
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-6);
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: white;
}

.step-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    padding: var(--space-5);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
}

.step-icon svg {
    width: 100%;
    height: 100%;
    color: var(--color-primary);
}

.step-title {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-3);
}

.step-text {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    max-width: 300px;
    margin: 0 auto;
}

/* ============================================
   GAMES SHOWCASE
   ============================================ */

.games-showcase {
    padding: var(--space-24) var(--space-4);
    background: var(--color-surface);
}

.games-scroll {
    display: flex;
    gap: var(--space-6);
    overflow-x: auto;
    padding: var(--space-4);
    -webkit-overflow-scrolling: touch;
}

.game-card {
    flex-shrink: 0;
    width: 300px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.game-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.game-card-preview {
    height: 180px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.game-card-preview svg {
    width: 64px;
    height: 64px;
    color: white;
    opacity: 0.8;
}

.game-card-content {
    padding: var(--space-6);
}

.game-card-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-2);
}

.game-card-type {
    font-size: var(--text-sm);
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

/* ============================================
   PRONUNCIATION SECTION
   ============================================ */

.pronunciation-section {
    padding: var(--space-24) var(--space-4);
    background: var(--color-bg);
}

.pronunciation-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
    align-items: center;
    max-width: var(--max-width);
    margin: 0 auto;
}

@media (min-width: 768px) {
    .pronunciation-content {
        grid-template-columns: 1fr 1fr;
    }
}

.pronunciation-visual {
    display: flex;
    justify-content: center;
}

.pronunciation-waveform {
    width: 200px;
    height: 200px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pronunciation-info h2 {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-4);
}

.pronunciation-info p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
}

.sample-word {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-6);
}

.sample-word-text {
    font-family: var(--font-german);
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
}

.sample-word-ipa {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

.sample-word-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    color: white;
    margin-left: auto;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sample-word-btn:hover {
    transform: scale(1.1);
}

/* ============================================
   TESTIMONIALS
   ============================================ */

.testimonials {
    padding: var(--space-24) var(--space-4);
    background: var(--color-surface);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
    max-width: var(--max-width);
    margin: 0 auto;
}

@media (min-width: 768px) {
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.testimonial-card {
    padding: var(--space-8);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
}

.testimonial-stars {
    display: flex;
    gap: var(--space-1);
    margin-bottom: var(--space-4);
}

.testimonial-stars svg {
    width: 16px;
    height: 16px;
    color: var(--color-gold);
    fill: var(--color-gold);
}

.testimonial-text {
    font-size: var(--text-base);
    color: var(--color-text);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-6);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.testimonial-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-bold);
    color: white;
    font-size: var(--text-sm);
}

.testimonial-info h4 {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-1);
}

.testimonial-info span {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* ============================================
   FAQ SECTION
   ============================================ */

.faq-section {
    padding: var(--space-24) var(--space-4);
    background: var(--color-bg);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

/* ============================================
   CTA SECTION
   ============================================ */

.cta-section {
    padding: var(--space-24) var(--space-4);
    background: var(--gradient-primary);
    text-align: center;
}

.cta-section h2 {
    color: white;
    margin-bottom: var(--space-4);
}

.cta-section p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--space-8);
}

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

.cta-section .btn-secondary:hover {
    background: var(--color-bg);
}

/* ============================================
   HOME FOOTER
   ============================================ */

.home-footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--space-16) var(--space-4) var(--space-8);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.footer-brand svg {
    width: 32px;
    height: 32px;
}

.footer-brand span {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
}

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

.footer-bottom-bar {
    margin-top: var(--space-12);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
}

@media (min-width: 768px) {
    .footer-bottom-bar {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer-copyright {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

.footer-social {
    display: flex;
    gap: var(--space-4);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--color-surface-hover);
    color: var(--color-primary);
}