/* =============================================================================
   HummingHai Landing Page - CSS
   Glass/Aqua Design System inspired by iOS 26
   ============================================================================= */

/* CSS Variables */
:root {
    --accent-primary: #66b3ff;
    --accent-secondary: #9966ff;
    --accent-success: #4de69a;
    --accent-warning: #ffb34d;
    --accent-error: #ff6666;
    
    --bg-dark: #0d0d1a;
    --bg-darker: #050510;
    --glass-tint: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.15);
    --glass-glow: rgba(255, 255, 255, 0.1);
    
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-tertiary: rgba(255, 255, 255, 0.5);
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    
    --shadow-color: rgba(0, 0, 0, 0.4);
    --glow-color: rgba(102, 179, 255, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

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

/* Background Effects */
.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    z-index: -2;
}

.bg-orbs {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
    animation: float 20s infinite ease-in-out;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--accent-primary);
    top: -200px;
    right: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--accent-secondary);
    bottom: -150px;
    left: -150px;
    animation-delay: -7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: var(--accent-success);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
    opacity: 0.2;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

/* Glass Surface */
.glass-surface {
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    box-shadow: 0 10px 40px var(--shadow-color);
}

/* Navigation */
.nav {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 40px);
    max-width: 1200px;
    border-radius: var(--radius-lg);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    width: 36px;
    height: 36px;
}

.logo-text {
    font-weight: 600;
    font-size: 1.25rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    color: white;
    box-shadow: 0 4px 20px rgba(102, 179, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(102, 179, 255, 0.4);
}

.btn-secondary {
    background: var(--glass-tint);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    color: var(--text-primary);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 120px 40px 80px;
    max-width: 1400px;
    margin: 0 auto;
    gap: 60px;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.badge-icon {
    font-size: 1rem;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-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: 40px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Phone Mockup */
.phone-mockup {
    width: 320px;
    border-radius: 40px;
    padding: 12px;
    position: relative;
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 24px;
    background: #000;
    border-radius: 12px;
}

.phone-screen {
    background: var(--bg-darker);
    border-radius: 30px;
    overflow: hidden;
    padding-top: 40px;
}

.app-preview {
    padding: 20px 16px;
}

.deck {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 12px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.deck-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.deck-label {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--accent-primary);
}

.deck-b .deck-label {
    color: var(--accent-secondary);
}

.deck-status {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-tertiary);
}

.deck-status.active {
    background: rgba(77, 230, 154, 0.2);
    color: var(--accent-success);
}

.waveform {
    height: 60px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    overflow: hidden;
    position: relative;
}

.waveform-bars {
    display: flex;
    align-items: center;
    justify-content: space-around;
    height: 100%;
    padding: 8px;
}

.waveform-bars span {
    width: 6px;
    height: var(--h, 50%);
    background: linear-gradient(to top, var(--accent-primary), var(--accent-secondary));
    border-radius: 3px;
    animation: pulse 1s ease-in-out infinite alternate;
}

.waveform-b .waveform-bars span {
    background: linear-gradient(to top, var(--accent-secondary), var(--accent-primary));
    animation: none;
    opacity: 0.6;
}

@keyframes pulse {
    from { opacity: 0.7; }
    to { opacity: 1; }
}

.playhead {
    position: absolute;
    left: 30%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--accent-success);
    box-shadow: 0 0 10px var(--accent-success);
}

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

.track-name {
    font-weight: 500;
    font-size: 0.875rem;
}

.track-bpm {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    font-weight: 600;
}

.bpm-match {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px;
    background: rgba(77, 230, 154, 0.1);
    border: 1px solid rgba(77, 230, 154, 0.3);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--accent-success);
    font-weight: 500;
}

.match-icon {
    font-weight: 700;
}

/* Sections */
.section {
    padding: 100px 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, rgba(102, 179, 255, 0.2), rgba(153, 102, 255, 0.2));
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.feature-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px var(--shadow-color);
}

.feature-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    color: var(--accent, var(--accent-primary));
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* How It Works */
.steps {
    display: flex;
    flex-direction: column;
    gap: 40px;
    max-width: 700px;
    margin: 0 auto;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 24px;
}

.step-number {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Integrations */
.integration-card {
    border-radius: var(--radius-xl);
    padding: 48px;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.integration-content {
    display: flex;
    align-items: flex-start;
    gap: 32px;
}

.integration-logo {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #ff5500, #ff7700);
    border-radius: var(--radius-md);
    color: white;
}

.integration-text h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.integration-text p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.integration-features {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}

.int-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

.int-feature .check {
    color: var(--accent-success);
    font-weight: 700;
}

/* Design Section */
.design-content {
    display: flex;
    align-items: center;
    gap: 60px;
}

.design-text {
    flex: 1;
}

.design-text h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 16px;
}

.design-text > p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.design-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.design-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
}

.check-circle {
    color: var(--accent-success);
    font-weight: 700;
}

.design-visual {
    flex: 1;
    display: flex;
    justify-content: center;
}

.color-palette {
    display: flex;
    gap: 16px;
}

.color-swatch {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    background: var(--color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

.color-swatch:hover {
    transform: scale(1.1) rotate(5deg);
}

/* CTA Section */
.cta {
    text-align: center;
}

.cta-content {
    padding: 60px 40px;
    border-radius: var(--radius-xl);
}

.cta-content h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-content p {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 1.125rem;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    padding: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    text-align: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    font-size: 1.125rem;
}

.footer-logo {
    width: 32px;
    height: 32px;
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    color: var(--text-tertiary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s;
}

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

.footer-copy {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 140px;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .design-content {
        flex-direction: column;
        text-align: center;
    }
    
    .design-features {
        align-items: center;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .section {
        padding: 60px 20px;
    }
    
    .hero {
        padding: 120px 20px 60px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .integration-content {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    
    .integration-features {
        justify-content: center;
    }
    
    .step {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .phone-mockup {
        width: 280px;
    }
    
    .cta-content {
        padding: 40px 24px;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-darker);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Selection */
::selection {
    background: var(--accent-primary);
    color: white;
}