/* --------------------------------------------------
 * Kubun — Real-Time Face-to-Face Voice Translator
 * Modern Premium Dark Mode Design System
 * -------------------------------------------------- */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

:root {
    --bg-dark: #090c15;
    --bg-card: rgba(18, 24, 40, 0.7);
    --bg-card-hover: rgba(26, 35, 58, 0.85);
    --border-glass: rgba(255, 255, 255, 0.08);
    --border-glass-bright: rgba(255, 255, 255, 0.18);
    
    --primary: #6366f1;
    --primary-glow: rgba(99, 102, 241, 0.35);
    --secondary: #06b6d4;
    --accent: #a855f7;
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --text-dim: #6b7280;

    --gradient-hero: linear-gradient(135deg, #818cf8 0%, #c084fc 50%, #38bdf8 100%);
    --gradient-glow: radial-gradient(circle at center, rgba(99, 102, 241, 0.22) 0%, rgba(9, 12, 21, 0) 70%);

    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;

    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-family: var(--font-body);
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
}

body {
    min-height: 100vh;
    line-height: 1.6;
    position: relative;
}

/* Ambient Glowing Background Orbs */
.ambient-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
    z-index: 0;
}

.glow-top-left {
    top: -100px;
    left: -100px;
    width: 500px;
    height: 500px;
    background: rgba(99, 102, 241, 0.25);
}

.glow-top-right {
    top: 100px;
    right: -150px;
    width: 600px;
    height: 600px;
    background: rgba(168, 85, 247, 0.2);
}

.glow-center {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 700px;
    height: 700px;
    background: rgba(6, 182, 212, 0.12);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* Header & Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    background: rgba(9, 12, 21, 0.75);
    border-bottom: 1px solid var(--border-glass);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-main);
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.brand-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.brand-text span {
    color: var(--secondary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

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

.nav-cta-btn {
    background: linear-gradient(135deg, var(--primary), #4f46e5);
    color: #fff;
    padding: 10px 20px;
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: 0 4px 14px var(--primary-glow);
    transition: var(--transition-fast);
}

.nav-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--primary-glow);
}

/* Hero Section */
.hero-section {
    padding: 160px 0 100px 0;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.25);
    color: #a5b4fc;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: #10b981;
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    }
    70% {
        box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
    }
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
}

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

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 36px;
    max-width: 520px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    align-items: center;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--primary), #4338ca);
    color: #fff;
    padding: 14px 28px;
    border-radius: var(--radius-full);
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 8px 24px var(--primary-glow);
    transition: var(--transition-fast);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px var(--primary-glow);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass-bright);
    color: var(--text-main);
    padding: 14px 28px;
    border-radius: var(--radius-full);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-fast);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* CSS Phone Frame & Screenshots */
.phone-mockup-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.floating-glass-card {
    position: absolute;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    background: rgba(18, 24, 40, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass-bright);
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    z-index: 10;
}

.card-left {
    top: 15%;
    left: -20px;
    animation: floatSlow 6s ease-in-out infinite;
}

.card-right {
    bottom: 20%;
    right: -20px;
    animation: floatSlow 6s ease-in-out infinite 3s;
}

@keyframes floatSlow {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.glass-icon {
    font-size: 1.5rem;
}

.glass-title {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-main);
}

.glass-subtitle {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.phone-mockup-frame {
    width: 290px;
    height: 590px;
    background: #000;
    border-radius: 44px;
    padding: 12px;
    border: 4px solid #2a2f45;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8), 0 0 40px rgba(99, 102, 241, 0.2);
    position: relative;
    overflow: hidden;
}

.phone-notch {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 110px;
    height: 24px;
    background: #000;
    border-bottom-left-radius: 14px;
    border-bottom-right-radius: 14px;
    z-index: 20;
}

.phone-screen-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 34px;
    display: block;
}

/* Section Header */
.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 60px auto;
}

.section-tag {
    text-transform: uppercase;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--secondary);
    margin-bottom: 12px;
    display: block;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-description {
    color: var(--text-muted);
    font-size: 1.05rem;
}

/* Ecosystem Suite Section */
.suite-section {
    padding: 100px 0;
    border-top: 1px solid var(--border-glass);
}

.suite-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.suite-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    position: relative;
    transition: var(--transition-normal);
}

.suite-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-glass-bright);
    transform: translateY(-4px);
}

.suite-card.active {
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.15);
}

.suite-badge {
    position: absolute;
    top: 24px;
    right: 24px;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    background: rgba(99, 102, 241, 0.15);
    color: #a5b4fc;
}

.suite-icon {
    font-size: 2.2rem;
    margin-bottom: 20px;
}

.suite-card h3 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.suite-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Capabilities Features Section */
.features-section {
    padding: 100px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: var(--transition-normal);
}

.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-glass-bright);
    transform: translateY(-4px);
}

.feature-icon-box {
    width: 52px;
    height: 52px;
    background: rgba(99, 102, 241, 0.12);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.92rem;
}

/* Interactive Showcase Section */
.showcase-section {
    padding: 100px 0;
    border-top: 1px solid var(--border-glass);
}

.showcase-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.tab-btn {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-glass);
    color: var(--text-muted);
    padding: 12px 24px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.tab-btn:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.08);
}

.tab-btn.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 4px 16px var(--primary-glow);
}

.showcase-viewer {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: 60px;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 48px;
}

.showcase-img-container {
    display: flex;
    justify-content: center;
}

.showcase-img-container img {
    max-width: 280px;
    width: 100%;
    border-radius: 28px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    border: 3px solid rgba(255, 255, 255, 0.1);
}

.showcase-details h3 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.showcase-details p {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 28px;
}

.quote-highlight-preview {
    background: rgba(0, 0, 0, 0.4);
    border-left: 4px solid var(--secondary);
    padding: 18px 22px;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-family: monospace;
    font-size: 0.9rem;
    color: #cbd5e1;
}

/* Technical Specs & Architecture */
.tech-section {
    padding: 100px 0;
    border-top: 1px solid var(--border-glass);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.tech-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 24px 20px;
    transition: var(--transition-fast);
}

.tech-card:hover {
    border-color: var(--secondary);
    transform: translateY(-2px);
}

.tech-card-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.05rem;
    margin-bottom: 6px;
    color: var(--text-main);
}

.tech-card-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* CTA Banner */
.cta-banner {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(6, 182, 212, 0.15));
    border: 1px solid var(--border-glass-bright);
    border-radius: var(--radius-lg);
    padding: 60px 40px;
    text-align: center;
    margin: 60px 0;
}

.cta-banner h2 {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-banner p {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border-glass);
    padding: 40px 0;
    color: var(--text-dim);
    font-size: 0.9rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: 24px;
}

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

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

/* Privacy Policy Layout */
.privacy-container {
    max-width: 860px;
    margin: 0 auto;
    padding: 160px 24px 100px 24px;
}

.privacy-header {
    margin-bottom: 48px;
}

.privacy-title {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.privacy-meta {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.privacy-section {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 36px;
    margin-bottom: 32px;
}

.privacy-section h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--secondary);
}

.privacy-section p {
    color: var(--text-muted);
    margin-bottom: 16px;
    font-size: 0.98rem;
}

.privacy-section ul {
    margin-left: 24px;
    margin-bottom: 16px;
    color: var(--text-muted);
}

.privacy-section li {
    margin-bottom: 8px;
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    .hero-actions {
        justify-content: center;
    }
    .suite-grid, .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .showcase-viewer {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 2.4rem;
    }
    .nav-links {
        display: none;
    }
    .suite-grid, .features-grid, .tech-grid {
        grid-template-columns: 1fr;
    }
    .showcase-viewer {
        padding: 24px;
    }
    .card-left, .card-right {
        display: none;
    }
}