:root {
    /* Dark Theme - Futuristic Deep Space Navy */
    --bg-color: #060d1a;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --primary-color: #3b82f6; /* Supersonic blue */
    --primary-hover: #60a5fa;
    --card-bg: rgba(255, 255, 255, 0.02);
    --border-color: rgba(255, 255, 255, 0.08);
    --header-bg: rgba(6, 13, 26, 0.75);
    --glass-blur: blur(16px);
    --spotlight-color: rgba(255, 255, 255, 0.04);
    --nav-hover-bg: rgba(255, 255, 255, 0.1);
    --accent-glow: rgba(59, 130, 246, 0.4);
    --pulse-color: #10b981;
}

[data-theme="light"] {
    /* Light Theme Variant */
    --bg-color: #f1f5f9;
    --text-color: #0f172a;
    --text-muted: #475569;
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --card-bg: rgba(255, 255, 255, 0.6);
    --border-color: rgba(0, 0, 0, 0.08);
    --header-bg: rgba(241, 245, 249, 0.75);
    --spotlight-color: rgba(255, 255, 255, 0.6);
    --nav-hover-bg: rgba(0, 0, 0, 0.05);
    --accent-glow: rgba(37, 99, 235, 0.3);
    --pulse-color: #059669;
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.4s ease, color 0.4s ease;
    overflow-x: hidden;
}

/* Kinetic Animated Background */
.ambient-bg {
    position: fixed;
    top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.07), transparent 60%);
    z-index: -1;
    pointer-events: none;
}
[data-theme="light"] .ambient-bg {
    background: radial-gradient(circle at 50% 50%, rgba(37, 99, 235, 0.04), transparent 60%);
}

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

/* Header & Navigation */
header {
    position: sticky;
    top: 0;
    background-color: var(--header-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    letter-spacing: 0.5px;
}

.main-nav {
    display: flex;
    gap: 6px;
}
.main-nav a {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: 6px;
    transition: all 0.3s ease;
}
.main-nav a:hover {
    color: var(--text-color);
    background-color: var(--nav-hover-bg);
}
.main-nav .nav-highlight {
    color: var(--primary-color);
    position: relative;
}

/* Theme Toggle Button */
.theme-toggle {
    background: transparent;
    border: 1px solid var(--border-color);
    cursor: pointer;
    color: var(--text-color);
    width: 38px;
    height: 38px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.theme-toggle:hover {
    background-color: var(--nav-hover-bg);
    transform: translateY(-1px);
}
.sun-icon { display: none; }
.moon-icon { display: block; }
[data-theme="light"] .sun-icon { display: block; }
[data-theme="light"] .moon-icon { display: none; }

/* Status Indicators */
.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--pulse-color);
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 0 rgba(16, 185, 129, 0.4);
    animation: pulse 2s infinite;
}
.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}
.status-dot.green { 
    background-color: var(--pulse-color); 
    box-shadow: 0 0 10px var(--pulse-color); 
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
    100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Translucent Frosted Glass Containers */
.glass-card {
    position: relative;
    overflow: hidden;
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 36px 30px;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), border-color 0.3s, box-shadow 0.3s;
}
/* Smooth cursor-tracking spotlight illumination */
.glass-card::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(
        500px circle at var(--mouse-x, -1000px) var(--mouse-y, -1000px),
        var(--spotlight-color),
        transparent 40%
    );
    z-index: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    opacity: 0;
}
.glass-card:hover::before {
    opacity: 1;
}
.glass-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}
[data-theme="light"] .glass-card:hover {
    border-color: rgba(0, 0, 0, 0.15);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.04);
}
.glass-card > * {
    position: relative;
    z-index: 1;
}

/* Magnetic Interactive CTA Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    letter-spacing: 0.5px;
}
.btn-primary {
    background-color: var(--primary-color);
    color: #ffffff !important;
    border: 1px solid var(--primary-color);
    box-shadow: 0 4px 14px var(--accent-glow);
}
.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 6px 20px var(--accent-glow);
}
.btn-glass {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(4px);
    color: var(--text-color) !important;
    border: 1px solid var(--border-color);
}
[data-theme="light"] .btn-glass {
    background: rgba(0, 0, 0, 0.03);
}
.btn-glass:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}
[data-theme="light"] .btn-glass:hover {
    background: rgba(0, 0, 0, 0.06);
    border-color: rgba(0, 0, 0, 0.2);
}
.magnetic-btn {
    /* Transform handled by JS */
    transition: transform 0.2s cubic-bezier(0.33, 1, 0.68, 1), background 0.3s, box-shadow 0.3s, border-color 0.3s;
}

/* Hero Section */
.hero {
    padding: 110px 0 90px;
    text-align: center;
    position: relative;
}
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 30px;
}
.hero h1 {
    font-size: 52px;
    margin-bottom: 24px;
    line-height: 1.15;
    letter-spacing: -1px;
    background: linear-gradient(to right, #ffffff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
[data-theme="light"] .hero h1 {
    background: linear-gradient(to right, #0f172a, #475569);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero p {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
}
.cta-group {
    display: flex;
    justify-content: center;
    gap: 16px;
}

/* Sections Common */
section { padding: 80px 0; }
h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 50px;
    letter-spacing: -0.5px;
}
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

/* Feature Cards */
.card-icon {
    color: var(--primary-color);
    margin-bottom: 24px;
}
.glass-card h3 {
    font-size: 19px;
    margin-bottom: 12px;
    font-weight: 600;
}
.glass-card p {
    color: var(--text-muted);
    font-size: 14px;
}
.card-header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}
.card-header-flex h3 { margin-bottom: 0; }

/* Pricing */
.pricing-card {
    display: flex;
    flex-direction: column;
}
.pricing-card h3 {
    font-size: 20px;
    color: var(--text-muted);
}
.price {
    font-size: 44px;
    font-weight: 700;
    color: var(--text-color);
    margin: 16px 0 24px;
    display: flex;
    align-items: baseline;
}
.price span {
    font-size: 15px;
    color: var(--text-muted);
    font-weight: 400;
    margin-left: 4px;
}
.pricing-card ul {
    list-style: none;
    margin-bottom: 32px;
    flex-grow: 1;
}
.pricing-card ul li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    color: var(--text-color);
    font-size: 14px;
    border-bottom: 1px solid var(--border-color);
}
.pricing-card ul li:last-child { border-bottom: none; }
.pricing-card ul li svg {
    width: 16px; height: 16px;
    color: var(--primary-color);
}
.pricing-card .btn { width: 100%; }

.popular {
    border-color: var(--primary-color);
    background: linear-gradient(180deg, rgba(59, 130, 246, 0.05) 0%, var(--card-bg) 100%);
}
[data-theme="light"] .popular {
    background: linear-gradient(180deg, rgba(37, 99, 235, 0.03) 0%, var(--card-bg) 100%);
}
.badge {
    position: absolute;
    top: -1px; right: -1px;
    background: var(--primary-color);
    color: white;
    padding: 6px 14px;
    border-radius: 0 16px 0 16px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* Reviews */
.stars { color: var(--primary-color); margin-bottom: 16px; letter-spacing: 2px;}
.review-card p { font-style: normal; margin-bottom: 24px; color: var(--text-color); }
.author { color: var(--text-muted); font-size: 13px; }
.author span { color: var(--primary-color); margin-right: 4px; }

/* FAQ */
.faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item { padding: 24px 32px; }
.faq-item h4 { font-size: 16px; margin-bottom: 8px; color: var(--text-color); }

/* Footer */
footer {
    border-top: 1px solid var(--border-color);
    padding: 50px 0 40px;
    text-align: center;
}
.footer-links { margin-bottom: 24px; display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; }
.footer-links a {
    color: var(--text-muted);
    font-size: 14px;
    transition: color 0.3s;
    text-decoration: none;
}
.footer-links a:hover { color: var(--text-color); }
.copyright { color: var(--text-muted); font-size: 13px; }

/* Subpage Styles */
.subpage-container {
    padding: 80px 24px;
    max-width: 800px;
    margin: 0 auto;
    min-height: 65vh;
}
.subpage-container h1 { font-size: 32px; margin-bottom: 30px; letter-spacing: -0.5px; }
.subpage-container h2 { font-size: 22px; margin: 40px 0 16px; letter-spacing: 0; color: var(--text-color); }
.subpage-container p, .subpage-container ul { color: var(--text-muted); margin-bottom: 20px; font-size: 15px; }
.subpage-container ul { padding-left: 20px; }
.subpage-container li { margin-bottom: 8px; }
.subpage-container a { color: var(--primary-color); text-decoration: none; }
.subpage-container a:hover { text-decoration: underline; }

/* Media Queries for Mobile */
@media (max-width: 800px) {
    .main-nav { display: none; }
    .hero h1 { font-size: 38px; }
    .hero p { font-size: 16px; }
    .cta-group { flex-direction: column; }
    .btn { width: 100%; }
    .grid-3, .grid-2 { grid-template-columns: 1fr; }
    .hero { padding: 80px 0 60px; }
}