:root {
    /* Base Palette (Light Theme overrides) */
    --bg-main: #f0f4f8;
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(255, 255, 255, 0.4);
    --glass-shadow: rgba(0, 0, 0, 0.05);
    
    /* Brand Colors (Light Mode - legible & professional) */
    --color-indigo: #4F46E5;
    --color-mint: #059669; /* Dark emerald, non-fluorescent */
    
    --transition: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --scroll-padding: 72px;
}

[data-theme="dark"] {
    /* Palette from Prompt */
    --bg-main: #0D1117; /* Deep slate-blue void */
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    
    /* Brand Colors (Dark Mode - glowing & vibrant) */
    --color-indigo: #6366F1;
    --color-mint: #14F195; /* Fluorescent mint for dark backgrounds */
    
    /* Glassmorphism */
    --glass-bg: rgba(13, 17, 23, 0.45);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: rgba(0, 0, 0, 0.4);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--scroll-padding);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    transition: background-color var(--transition), color var(--transition);
}

/* Fluid Interwoven Network Fabric Background */
.aurora-bg {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.aurora {
    position: absolute;
    filter: blur(80px);
    opacity: 0.4;
    border-radius: 50%;
    animation: drift 20s infinite alternate ease-in-out;
}

[data-theme="light"] .aurora { opacity: 0.15; }

.aurora-1 {
    width: 60vw; height: 60vw;
    background: radial-gradient(circle, var(--color-indigo) 0%, transparent 70%);
    top: -20%; left: -10%;
}

.aurora-2 {
    width: 50vw; height: 50vw;
    background: radial-gradient(circle, var(--color-mint) 0%, transparent 70%);
    bottom: -10%; right: -10%;
    animation-delay: -10s;
}

.wave-lines {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(255,255,255,0.015) 10px,
        rgba(255,255,255,0.015) 11px
    );
}

[data-theme="light"] .wave-lines {
    background-image: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(0,0,0,0.02) 10px,
        rgba(0,0,0,0.02) 11px
    );
}

@keyframes drift {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(5%, 5%) scale(1.1); }
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Typography */
h1, h2, h3 { line-height: 1.2; font-weight: 700; letter-spacing: -0.02em; }
.section-title { font-size: 2.25rem; text-align: center; margin-bottom: 2rem; }
.text-left { text-align: left; }
a { color: var(--color-indigo); text-decoration: none; }

/* Glass Header */
.glass-header {
    position: sticky;
    top: 0; z-index: 100;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 4px 30px var(--glass-shadow);
}

.header-container {
    display: flex; justify-content: space-between; align-items: center; height: 72px;
}

.logo-text { font-size: 1.5rem; font-weight: 800; color: var(--text-primary); }

.desktop-nav { display: flex; gap: 2rem; }
.desktop-nav a { 
    color: var(--text-secondary); font-weight: 500; font-size: 0.95rem;
    transition: color var(--transition);
}
.desktop-nav a:hover { color: var(--text-primary); }
.nav-highlight { color: var(--color-mint) !important; font-weight: 600 !important; }

/* Glass Buttons */
.glass-button {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    border-radius: 50%;
    width: 44px; height: 44px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}
.glass-button:hover { background: rgba(255,255,255,0.1); transform: scale(1.05); }
.glass-button svg { width: 20px; height: 20px; }

[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }

/* Hero Section */
.hero { padding: 80px 0 60px; text-align: center; }
.hero-title { font-size: 3.8rem; margin-bottom: 1.5rem; }
.brand-highlight { 
    font-size: 2.5rem; 
    background: linear-gradient(90deg, var(--color-indigo), var(--color-mint));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-subtitle { font-size: 1.25rem; color: var(--text-secondary); max-width: 600px; margin: 0 auto 3rem; }

/* Tactile Console (Hero) */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: 0 10px 40px var(--glass-shadow);
}

.tactile-console {
    max-width: 700px;
    margin: 0 auto 3rem;
    padding: 2rem;
    position: relative;
    transform-style: preserve-3d;
}

.console-header {
    font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em;
    color: var(--text-secondary); margin-bottom: 1.5rem;
}

.protocol-switcher {
    display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; margin-bottom: 2rem;
}

.tactile-toggle {
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    padding: 10px 20px;
    border-radius: 12px;
    font-size: 1rem; font-weight: 600;
    cursor: pointer;
    box-shadow: inset 0 2px 5px rgba(0,0,0,0.5), 0 2px 0 rgba(255,255,255,0.05);
    transition: all 0.15s ease;
}

[data-theme="light"] .tactile-toggle {
    background: rgba(255,255,255,0.5);
    box-shadow: inset 0 2px 5px rgba(0,0,0,0.1), 0 2px 0 rgba(255,255,255,0.5);
}

.tactile-toggle:hover { color: var(--text-primary); }
.tactile-toggle:active { transform: translateY(2px); box-shadow: inset 0 4px 8px rgba(0,0,0,0.6); }

.tactile-toggle.active {
    background: var(--color-indigo);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 0 15px rgba(99,102,241,0.5), inset 0 2px 4px rgba(255,255,255,0.3);
    transform: translateY(2px);
}

.benchmark-indicators {
    display: flex; gap: 2rem; justify-content: center;
}

.indicator { flex: 1; max-width: 200px; text-align: left; }
.indicator .label { display: block; font-size: 0.8rem; color: var(--text-secondary); margin-bottom: 4px; }
.indicator .value { display: block; font-size: 1.25rem; font-weight: 700; color: var(--color-mint); margin-bottom: 8px; font-family: monospace; }
.bar-container { height: 6px; background: rgba(255,255,255,0.1); border-radius: 3px; overflow: hidden; }
.bar-fill { height: 100%; background: var(--color-mint); width: 0%; transition: width 0.5s ease; }
.ping-bar { width: 85%; background: var(--color-indigo); }
.speed-bar { width: 95%; }

/* Buttons (Tactile + Ripple) */
.cta-button {
    display: inline-block;
    padding: 16px 36px;
    border-radius: 12px;
    font-size: 1.125rem; font-weight: 600;
    text-align: center;
    position: relative; overflow: hidden;
    cursor: pointer;
    transition: transform 0.1s, box-shadow 0.1s;
    user-select: none;
}
.primary-btn {
    background: var(--color-indigo); color: #fff;
    box-shadow: 0 4px 15px rgba(99,102,241,0.4), inset 0 2px 0 rgba(255,255,255,0.2);
    border: none;
}
.primary-btn:active {
    transform: scale(0.97) translateY(2px);
    box-shadow: inset 0 4px 10px rgba(0,0,0,0.3);
}

.outline-btn {
    background: transparent; color: var(--text-primary);
    border: 1px solid var(--glass-border);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}
.outline-btn:hover { background: rgba(255,255,255,0.05); }
.outline-btn:active {
    transform: scale(0.97) translateY(2px);
    box-shadow: inset 0 4px 10px rgba(0,0,0,0.2);
}
.full-width { width: 100%; display: block; }

.ripple-btn .btn-text { position: relative; z-index: 2; }
.ripple {
    position: absolute; border-radius: 50%; transform: scale(0);
    animation: ripple-anim 0.6s linear; background: rgba(255,255,255,0.3);
}
@keyframes ripple-anim { to { transform: scale(4); opacity: 0; } }

/* Cards 3D Tilt & Glass */
section { padding: 60px 0; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2.5rem; }

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    position: relative;
    transform-style: preserve-3d;
    box-shadow: 0 10px 30px var(--glass-shadow);
}

.card-glow {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    border-radius: 20px; pointer-events: none; opacity: 0;
    box-shadow: inset 0 0 0 1px var(--color-indigo);
    transition: opacity var(--transition);
}
.glass-card:hover .card-glow { opacity: 1; }

.card-icon {
    width: 60px; height: 60px;
    margin-bottom: 1.5rem; color: var(--color-indigo);
    transform: translateZ(30px);
}
.glass-card h3 { font-size: 1.4rem; margin-bottom: 1rem; transform: translateZ(20px); }
.glass-card p { color: var(--text-secondary); transform: translateZ(10px); }

/* Highlights (Streaming & AI) */
.highlight-container { display: flex; align-items: center; gap: 4rem; }
.reverse .highlight-container { flex-direction: row-reverse; }
.highlight-content { flex: 1; }
.highlight-content p { color: var(--text-secondary); margin-bottom: 2rem; font-size: 1.1rem; }
.highlight-image {
    flex: 1; height: 350px; display: flex; align-items: center; justify-content: center;
}
.image-placeholder svg { width: 150px; height: 150px; color: var(--color-mint); opacity: 0.8; filter: drop-shadow(0 0 20px rgba(20,241,149,0.4)); }

/* Pricing */
.pricing-card { text-align: center; display: flex; flex-direction: column; }
.pricing-card.popular { border-color: rgba(99,102,241,0.5); transform: scale(1.05); }
.badge {
    position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
    background: linear-gradient(90deg, var(--color-indigo), #8b5cf6);
    color: #fff; padding: 6px 18px; border-radius: 20px; font-size: 0.85rem; font-weight: 600;
}
.price { font-size: 3.2rem; font-weight: 800; margin: 1rem 0; color: var(--text-primary); transform: translateZ(25px); }
.price span { font-size: 1.1rem; color: var(--text-secondary); font-weight: 400; }
.features-list { list-style: none; margin-bottom: 2rem; flex-grow: 1; transform: translateZ(15px); }
.features-list li { padding: 0.75rem 0; border-bottom: 1px solid var(--glass-border); color: var(--text-secondary); }
.features-list li:last-child { border: none; }
.features-list strong { color: var(--text-primary); }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.glass-details {
    background: var(--glass-bg); backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border); border-radius: 12px; margin-bottom: 1rem; padding: 1.5rem;
}
summary { font-size: 1.1rem; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
summary::-webkit-details-marker { display: none; }
summary::after { content: '+'; font-size: 1.5rem; color: var(--color-indigo); }
details[open] summary::after { content: '-'; }
details p { margin-top: 1rem; color: var(--text-secondary); padding-top: 1rem; border-top: 1px solid var(--glass-border); }

/* Footer */
.glass-footer {
    background: var(--glass-bg); backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border); padding: 4rem 0 2rem;
}
.footer-links { display: flex; justify-content: center; gap: 2rem; margin-bottom: 2rem; flex-wrap: wrap; }
.footer-links a { color: var(--text-secondary); font-weight: 500; }
.footer-links a:hover { color: var(--color-mint); }
.copyright { text-align: center; color: var(--text-secondary); font-size: 0.85rem; }

/* Responsive */
@media (max-width: 992px) {
    .highlight-container, .reverse .highlight-container { flex-direction: column; gap: 2rem; text-align: center; }
    .highlight-content .text-left { text-align: center; }
    .pricing-card.popular { transform: none; }
}
@media (max-width: 768px) {
    .desktop-nav { display: none; }
    .hero-title { font-size: 2.5rem; }
    .brand-highlight { font-size: 1.8rem; }
    .tactile-console { padding: 1.5rem 1rem; }
}