/* Humm Noise - Calm Night Theme */
:root {
    --primary: #6366f1;
    --primary-light: #818cf8;
    --accent: #06b6d4;
    --bg-dark: #0a0a12;
    --bg-surface: #12121f;
    --text-primary: #f5f5f5;
    --text-secondary: #9ca3af;
    --gradient: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Ambient Background */
.ambient-bg {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(ellipse at center, #0f0f1a 0%, #0a0a12 50%, #050508 100%);
    z-index: -1;
}

.stars {
    position: absolute;
    width: 100%; height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, rgba(99,102,241,0.8), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.6), transparent),
        radial-gradient(1px 1px at 90px 40px, rgba(6,182,212,0.8), transparent),
        radial-gradient(2px 2px at 160px 120px, rgba(255,255,255,0.5), transparent),
        radial-gradient(1px 1px at 230px 80px, rgba(99,102,241,0.6), transparent);
    background-repeat: repeat;
    background-size: 250px 250px;
    animation: twinkle 8s ease-in-out infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

.aurora {
    position: absolute;
    width: 100%; height: 100%;
    background: radial-gradient(circle at 30% 20%, rgba(99,102,241,0.15) 0%, transparent 40%),
                radial-gradient(circle at 70% 80%, rgba(6,182,212,0.1) 0%, transparent 40%);
    animation: aurora 15s ease-in-out infinite;
}

@keyframes aurora {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

/* Home Button */
.home-btn {
    position: fixed;
    top: 20px; left: 20px;
    width: 44px; height: 44px;
    background: rgba(99,102,241,0.1);
    border: 1px solid rgba(99,102,241,0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    text-decoration: none;
    z-index: 1000;
    transition: all 0.3s;
}

.home-btn:hover {
    background: var(--primary);
    transform: scale(1.1);
}

/* Navigation Links */
.nav-links {
    position: fixed;
    top: 20px; left: 80px;
    display: flex;
    gap: 8px;
    z-index: 1000;
    background: rgba(10, 10, 18, 0.8);
    backdrop-filter: blur(10px);
    padding: 8px 15px;
    border-radius: 25px;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.nav-links a {
    color: var(--primary-light);
    text-decoration: none;
    font-size: 13px;
    padding: 6px 12px;
    border-radius: 15px;
    transition: all 0.3s;
    opacity: 0.85;
}

.nav-links a:hover {
    opacity: 1;
    background: rgba(99, 102, 241, 0.15);
}


/* Language Selector */
.lang-selector {
    position: fixed;
    top: 20px; right: 20px;
    display: flex; gap: 8px;
    z-index: 1000;
}

.lang-btn {
    background: rgba(99,102,241,0.1);
    border: 1px solid rgba(99,102,241,0.3);
    color: var(--primary-light);
    padding: 8px 12px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.3s;
}

.lang-btn:hover, .lang-btn.active {
    background: var(--primary);
    color: white;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px 20px;
}

.hero-content { max-width: 800px; }
.logo-container { margin-bottom: 30px; }

.app-icon {
    width: 120px; height: 120px;
    margin: 0 auto 20px;
    border-radius: 30px;
    object-fit: contain;
    box-shadow: 0 20px 60px rgba(99,102,241,0.3);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.title {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
}

.tagline {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: var(--primary-light);
    margin-bottom: 15px;
    letter-spacing: 2px;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
}

/* Buttons */
.cta-buttons { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; margin-bottom: 60px; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 30px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 10px 30px rgba(99,102,241,0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(99,102,241,0.4);
}

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

.btn-secondary:hover { background: rgba(99,102,241,0.1); }
.btn-large { padding: 20px 50px; font-size: 1.2rem; }

/* Hero Stats */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-bottom: 60px;
}

.stat { text-align: center; }
.stat-num {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.stat-label { font-size: 14px; color: var(--text-secondary); }

.scroll-hint { color: var(--text-secondary); animation: bounce 2s infinite; }
.scroll-arrow { font-size: 24px; margin-top: 10px; }

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


/* Section Styles */
section { padding: 100px 20px; }

.section-title {
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    font-weight: 700;
    color: var(--primary-light);
    text-align: center;
    margin-bottom: 20px;
}

.section-desc {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 60px;
}

/* Sounds Showcase */
.sounds-showcase {
    background: linear-gradient(180deg, transparent 0%, rgba(99,102,241,0.05) 50%, transparent 100%);
}

.sounds-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.sound-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 25px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(99,102,241,0.2);
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s;
    min-width: 130px;
}

.sound-card:hover {
    transform: scale(1.1);
    border-color: var(--primary);
    box-shadow: 0 15px 40px rgba(99,102,241,0.2);
}

.sound-visual {
    width: 80px; height: 80px;
    border-radius: 50%;
    animation: pulse 3s ease-in-out infinite;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sound-emoji {
    font-size: 36px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.sound-visual.rain { background: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%); }
.sound-visual.ocean { background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%); }
.sound-visual.forest { background: linear-gradient(135deg, #22c55e 0%, #15803d 100%); }
.sound-visual.fire { background: linear-gradient(135deg, #f97316 0%, #dc2626 100%); }
.sound-visual.wind { background: linear-gradient(135deg, #94a3b8 0%, #64748b 100%); }
.sound-visual.cafe { background: linear-gradient(135deg, #a16207 0%, #78350f 100%); }

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
}

.sound-name {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Features Grid */
.features { background: var(--bg-surface); }

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(99,102,241,0.2);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(99,102,241,0.15);
}

.feature-icon { font-size: 50px; margin-bottom: 20px; }

.feature-card h3 {
    color: var(--primary-light);
    margin-bottom: 15px;
    font-size: 1.3rem;
}

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


/* How It Works */
.how-it-works {
    background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-dark) 100%);
}

.steps {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 20px;
    flex-wrap: wrap;
    max-width: 1000px;
    margin: 60px auto 0;
}

.step {
    text-align: center;
    max-width: 250px;
    position: relative;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(99,102,241,0.2);
    padding: 40px 25px;
    border-radius: 20px;
    transition: all 0.3s;
}

.step:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.step-num {
    position: absolute;
    top: -15px; left: 50%;
    transform: translateX(-50%);
    background: var(--gradient);
    color: white;
    width: 30px; height: 30px;
    border-radius: 50%;
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-icon { font-size: 48px; margin-bottom: 16px; }
.step h3 { margin-bottom: 10px; color: var(--primary-light); }
.step p { color: var(--text-secondary); font-size: 14px; }

.step-arrow {
    font-size: 24px;
    color: var(--primary);
    align-self: center;
    margin-top: 50px;
}

/* Final CTA */
.final-cta {
    text-align: center;
    position: relative;
    padding: 120px 20px;
}

.final-cta h2 {
    font-size: 2.5rem;
    color: var(--primary-light);
    margin-bottom: 20px;
}

.final-cta p {
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
}

.floating-symbols {
    position: absolute;
    width: 100%; height: 100%;
    top: 0; left: 0;
    pointer-events: none;
    overflow: hidden;
}

.floating-symbols span {
    position: absolute;
    font-size: 30px;
    opacity: 0.2;
    animation: floatSymbol 12s infinite;
}

.floating-symbols span:nth-child(1) { left: 10%; animation-delay: 0s; }
.floating-symbols span:nth-child(2) { left: 25%; animation-delay: 2s; }
.floating-symbols span:nth-child(3) { left: 50%; animation-delay: 4s; }
.floating-symbols span:nth-child(4) { left: 75%; animation-delay: 6s; }
.floating-symbols span:nth-child(5) { left: 90%; animation-delay: 8s; }

@keyframes floatSymbol {
    0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
    10% { opacity: 0.3; }
    90% { opacity: 0.3; }
    100% { transform: translateY(-100px) rotate(360deg); opacity: 0; }
}

/* Footer */
footer {
    background: rgba(0,0,0,0.5);
    padding: 60px 20px;
    text-align: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-light);
    margin-bottom: 20px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover { color: var(--primary-light); }
.copyright { color: var(--text-secondary); font-size: 14px; margin-bottom: 10px; }
.blessing { color: var(--primary-light); font-size: 14px; }

/* Responsive */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .lang-selector { top: 10px; right: 10px; }
    .lang-btn { padding: 6px 10px; font-size: 11px; }
    .hero-stats { gap: 24px; }
    .steps { flex-direction: column; align-items: center; }
    .step-arrow { transform: rotate(90deg); margin: 10px 0; }
    .sounds-grid { gap: 15px; }
    .sound-card { min-width: 100px; padding: 15px; }
    .sound-visual { width: 60px; height: 60px; }
}


/* ===== Page Styles (Privacy, Terms, Support) ===== */
.page-header {
    padding: 140px 20px 60px;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    color: var(--primary-light);
    margin-bottom: 16px;
}

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

.page-content {
    padding: 64px 20px;
    background: var(--bg-surface);
}

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

.page-content h2 {
    font-size: 1.5rem;
    margin: 48px 0 16px;
    color: var(--primary-light);
}

.page-content h2:first-child { margin-top: 0; }
.page-content p { color: var(--text-secondary); margin-bottom: 16px; }
.page-content ul { color: var(--text-secondary); margin-left: 24px; margin-bottom: 16px; }
.page-content li { margin-bottom: 8px; }

/* Support Page */
.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 64px;
}

.support-card {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(99,102,241,0.2);
    padding: 32px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s;
}

.support-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.support-card .icon { font-size: 48px; margin-bottom: 16px; }
.support-card h3 { margin-bottom: 8px; color: var(--primary-light); }
.support-card p { color: var(--text-secondary); margin-bottom: 16px; }
.support-card a { color: var(--primary); font-weight: 500; text-decoration: none; }

.faq-item {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(99,102,241,0.2);
    padding: 24px;
    border-radius: 16px;
    margin-bottom: 16px;
}

.faq-item h3 { margin-bottom: 12px; font-size: 1.1rem; color: var(--text-primary); }
.faq-item p { color: var(--text-secondary); margin: 0; }

.contact-form {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(99,102,241,0.2);
    padding: 32px;
    border-radius: 20px;
    max-width: 600px;
    margin: 0 auto;
}

.form-group { margin-bottom: 24px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 500; color: var(--text-primary); }

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(99,102,241,0.3);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
}

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

.form-group textarea { min-height: 120px; resize: vertical; }