/* ═══════════════════════════════════════════
   ZeliDesk Landing Page - Aurora Green-Blue Premium
   ═══════════════════════════════════════════ */

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

:root {
    --bg-primary: #030014;
    --bg-secondary: #0a0a1a;
    --bg-card: rgba(15, 15, 35, 0.6);
    --bg-card-hover: rgba(25, 25, 55, 0.8);
    --text-primary: #f0f0ff;
    --text-secondary: #7878a0;
    --text-muted: #44446a;
    --accent-primary: #0ea5e9;
    --accent-secondary: #10b981;
    --accent-tertiary: #10b981;
    --accent-glow-blue: rgba(14, 165, 233, 0.3);
    --accent-glow-green: rgba(16, 185, 129, 0.3);
    --gradient-1: #0ea5e9;
    --gradient-2: #10b981;
    --gradient-3: #14b8a6;
    --border-color: rgba(16, 185, 129, 0.12);
    --border-hover: rgba(14, 165, 233, 0.25);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 32px;
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 80px rgba(14, 165, 233, 0.12);
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --max-width: 1280px;
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ═══ Animated Grid Background ═══ */
.grid-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    background-image:
        linear-gradient(rgba(16, 185, 129, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(16, 185, 129, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { background-position: 0 0; }
    100% { background-position: 60px 60px; }
}

/* ═══ Navigation ═══ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    background: rgba(3, 0, 20, 0.7);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    border-bottom-color: var(--border-color);
    padding: 10px 0;
    background: rgba(3, 0, 20, 0.92);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.3rem;
}

.logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
    color: white;
    font-weight: 800;
    font-size: 1.15rem;
    box-shadow: 0 0 24px var(--accent-glow-blue), 0 0 48px var(--accent-glow-green);
    animation: logoFloat 3s ease-in-out infinite;
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-3px); }
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    transition: color var(--transition);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--gradient-1), var(--gradient-2));
    transition: width var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-download-btn {
    padding: 8px 22px !important;
    background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2)) !important;
    color: white !important;
    border-radius: var(--radius-xl);
    font-weight: 600 !important;
    transition: all var(--transition) !important;
    box-shadow: 0 0 20px var(--accent-glow-blue);
}

.nav-download-btn::after { display: none !important; }

.nav-download-btn:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 4px 30px var(--accent-glow-blue), 0 0 60px var(--accent-glow-green) !important;
}

/* ═══ Hero Section ═══ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 140px 24px 100px;
    overflow: hidden;
}

.hero-bg-gradient {
    position: absolute;
    top: -30%;
    left: 50%;
    transform: translateX(-50%);
    width: 160%;
    height: 120%;
    background:
        radial-gradient(ellipse at 30% 20%, rgba(16, 185, 129, 0.18) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 40%, rgba(14, 165, 233, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(20, 184, 166, 0.06) 0%, transparent 40%);
    pointer-events: none;
    animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    0% { opacity: 0.7; transform: translateX(-50%) scale(1); }
    100% { opacity: 1; transform: translateX(-50%) scale(1.05); }
}

.hero-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat 8s ease-in-out infinite;
}

.particle:nth-child(odd) {
    background: var(--accent-primary);
    box-shadow: 0 0 6px var(--accent-glow-blue);
}

.particle:nth-child(even) {
    background: var(--accent-secondary);
    box-shadow: 0 0 6px var(--accent-glow-green);
}

@keyframes particleFloat {
    0%, 100% { opacity: 0; transform: translateY(0) scale(0.5); }
    30% { opacity: 0.8; }
    50% { opacity: 0.5; transform: translateY(-120px) scale(1.2); }
    100% { opacity: 0; transform: translateY(-200px) scale(0); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 860px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 24px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.25);
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: 36px;
    animation: fadeInUp 0.8s ease;
    backdrop-filter: blur(12px);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
    box-shadow: 0 0 8px var(--accent-glow-blue);
}

@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--accent-glow-blue); }
    50% { opacity: 0.4; box-shadow: 0 0 20px var(--accent-glow-blue); }
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.8rem, 7vw, 5rem);
    font-weight: 700;
    line-height: 1.08;
    letter-spacing: -0.04em;
    margin-bottom: 28px;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.gradient-text {
    background: linear-gradient(135deg, var(--gradient-1) 0%, var(--gradient-2) 50%, var(--gradient-3) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: gradientShift 4s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 44px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 70px;
    animation: fadeInUp 0.8s ease 0.3s both;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius-xl);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0));
    opacity: 0;
    transition: opacity var(--transition);
}

.btn:hover::before { opacity: 1; }

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
    color: white;
    box-shadow: 0 4px 24px var(--accent-glow-blue), 0 0 60px var(--accent-glow-green);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 40px var(--accent-glow-blue), 0 0 80px var(--accent-glow-green);
}

.btn-secondary {
    background: rgba(16, 185, 129, 0.08);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    background: rgba(16, 185, 129, 0.15);
    border-color: var(--border-hover);
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(16, 185, 129, 0.15);
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    position: relative;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
}

.stat-divider {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, transparent, var(--accent-secondary), transparent);
    opacity: 0.3;
}

/* ═══ Sections Common ═══ */
.section-header {
    text-align: center;
    margin-bottom: 72px;
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 14px;
    padding: 6px 16px;
    background: rgba(14, 165, 233, 0.06);
    border: 1px solid rgba(14, 165, 233, 0.12);
    border-radius: var(--radius-xl);
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 14px;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ═══ Features Section ═══ */
.features {
    padding: 140px 0;
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(16, 185, 129, 0.3) 50%, transparent 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
}

.feature-card {
    padding: 36px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
    opacity: 0;
    transform: translateY(24px);
    backdrop-filter: blur(12px);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--gradient-1), var(--gradient-2), var(--gradient-3));
    opacity: 0;
    transition: opacity var(--transition);
}

.feature-card:hover::before { opacity: 1; }

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 40px rgba(16, 185, 129, 0.06);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(16, 185, 129, 0.1));
    border: 1px solid rgba(16, 185, 129, 0.15);
    margin-bottom: 22px;
    color: var(--accent-primary);
    transition: all var(--transition);
}

.feature-card:hover .feature-icon {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.2), rgba(16, 185, 129, 0.2));
    box-shadow: 0 0 30px rgba(14, 165, 233, 0.15);
    transform: scale(1.08);
}

.feature-card h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ═══ Demo Video Showcase ═══ */
.demo {
    padding: 140px 0;
    position: relative;
    overflow: hidden;
}

.demo::before {
    content: '';
    position: absolute;
    top: -300px;
    left: 50%;
    transform: translateX(-50%);
    width: 1000px;
    height: 1000px;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.06) 0%, rgba(16, 185, 129, 0.03) 40%, transparent 70%);
    pointer-events: none;
}

.demo::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(14, 165, 233, 0.25) 50%, transparent 100%);
}

.demo-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
    position: relative;
}

.demo-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
    backdrop-filter: blur(8px);
}

.demo-card:hover {
    border-color: rgba(14, 165, 233, 0.3);
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 60px rgba(14, 165, 233, 0.08), 0 0 120px rgba(16, 185, 129, 0.04);
}

.demo-video-wrap {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #000;
}

.demo-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.demo-video-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-xl);
    font-size: 0.7rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.demo-live-dot {
    width: 7px;
    height: 7px;
    background: #ef4444;
    border-radius: 50%;
    animation: pulse 1.5s ease-in-out infinite;
    box-shadow: 0 0 8px rgba(239, 68, 68, 0.8);
}

.demo-caption {
    padding: 26px 30px 30px;
}

.demo-caption h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.demo-caption p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ═══ Services Section ═══ */
.services {
    padding: 140px 0;
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(20, 184, 166, 0.25), transparent);
}

.services-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.service-chip {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 26px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all var(--transition);
    cursor: default;
    backdrop-filter: blur(8px);
}

.service-chip:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 20px rgba(16, 185, 129, 0.08);
}

.service-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: 0 0 8px currentColor;
}

/* ═══ Requirements Section ═══ */
.requirements {
    padding: 140px 0;
    position: relative;
}

.requirements::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(14, 165, 233, 0.2), transparent);
}

.requirements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.req-card {
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    text-align: center;
    transition: all var(--transition);
    backdrop-filter: blur(8px);
    position: relative;
    overflow: hidden;
}

.req-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--gradient-1), var(--gradient-2));
    opacity: 0;
    transition: opacity var(--transition);
}

.req-card:hover::after { opacity: 1; }

.req-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

.req-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.08), rgba(16, 185, 129, 0.08));
    color: var(--accent-primary);
    margin: 0 auto 16px;
}

.req-card h4 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.req-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

/* ═══ Download Section ═══ */
.download {
    padding: 140px 0;
    position: relative;
}

.download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(16, 185, 129, 0.25), transparent);
}

.download-card {
    position: relative;
    padding: 72px 52px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    text-align: center;
    overflow: hidden;
    backdrop-filter: blur(12px);
}

.download-glow {
    position: absolute;
    top: -120px;
    left: 50%;
    transform: translateX(-50%);
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--accent-glow-blue) 0%, var(--accent-glow-green) 30%, transparent 70%);
    pointer-events: none;
    opacity: 0.35;
    animation: downloadGlow 6s ease-in-out infinite alternate;
}

@keyframes downloadGlow {
    0% { transform: translateX(-50%) scale(1); opacity: 0.3; }
    100% { transform: translateX(-50%) scale(1.1); opacity: 0.5; }
}

.download-card h2 {
    position: relative;
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 14px;
}

.download-card > p {
    position: relative;
    color: var(--text-secondary);
    margin-bottom: 44px;
}

.download-options {
    position: relative;
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 36px;
    flex-wrap: wrap;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 22px 34px;
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all var(--transition);
    min-width: 290px;
    position: relative;
    overflow: hidden;
}

.download-msix {
    background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
    color: white;
    box-shadow: 0 4px 28px var(--accent-glow-blue), 0 0 60px var(--accent-glow-green);
}

.download-msix:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 48px var(--accent-glow-blue), 0 0 100px var(--accent-glow-green);
}

.download-github {
    background: rgba(16, 185, 129, 0.08);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(8px);
}

.download-github:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(16, 185, 129, 0.15);
}

.download-btn-text {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.download-btn-label {
    font-size: 1.05rem;
    font-weight: 600;
}

.download-btn-sub {
    font-size: 0.8rem;
    opacity: 0.7;
}

.download-version {
    position: relative;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ═══ Guide CTA ═══ */
.guide-cta {
    position: relative;
}

.guide-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(16, 185, 129, 0.25), transparent);
}

/* ═══ Footer ═══ */
.footer {
    padding: 44px 0;
    border-top: 1px solid rgba(16, 185, 129, 0.1);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.1rem;
}

.footer-copy {
    font-size: 0.85rem;
    color: var(--text-muted);
}

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

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color var(--transition);
}

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

/* ═══ Animations ═══ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ═══ Responsive ═══ */
@media (max-width: 768px) {
    .nav-links a:not(.nav-download-btn):not(.lang-toggle-btn) {
        display: none;
    }
    .lang-seg { order: -1; }

    .hero {
        padding: 120px 20px 70px;
    }

    .hero-description br {
        display: none;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-stats {
        gap: 20px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .demo-grid {
        grid-template-columns: 1fr;
    }

    .download-options {
        flex-direction: column;
        align-items: center;
    }

    .download-btn {
        width: 100%;
        max-width: 360px;
    }

    .download-card {
        padding: 44px 24px;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .requirements-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .requirements-grid {
        grid-template-columns: 1fr;
    }
}

/* i18n Language Toggle Styles */
html[lang='en'] [data-lang='ko'] { display: none !important; }
html[lang='ko'] [data-lang='en'] { display: none !important; }

html[lang='en'] [data-lang='tw'] { display: none !important; }
html[lang='ko'] [data-lang='tw'] { display: none !important; }
html[lang='tw'] [data-lang='en'] { display: none !important; }
html[lang='tw'] [data-lang='ko'] { display: none !important; }

/* ═══ Language Segment Control ═══ */
.lang-seg {
    display: inline-flex;
    align-items: center;
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 3px;
    gap: 2px;
}

.lang-seg-item {
    padding: 5px 14px;
    border: none;
    border-radius: calc(var(--radius-xl) - 2px);
    background: transparent;
    color: var(--text-muted);
    font-family: var(--font-body);
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.lang-seg-item:hover {
    color: var(--text-secondary);
}

.lang-seg-item.active {
    background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
    color: white;
    box-shadow: 0 2px 12px var(--accent-glow-blue);
}

/* ═══ Orb Decorations ═══ */
.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
    z-index: -1;
}

.orb-cyan {
    background: rgba(14, 165, 233, 0.08);
}

.orb-purple {
    background: rgba(16, 185, 129, 0.08);
}

.orb-pink {
    background: rgba(20, 184, 166, 0.06);
}