html {
    scroll-behavior: smooth;
}

:root {
    /* Base Dark Theme (Obsidian) */
    --bg-color: #090A0F;
    --card-bg: #131620;
    --primary-color: #00D2FF;
    --primary-glow: rgba(0, 210, 255, 0.4);
    --accent-color: #FFB800;
    --text-color: #E2E8F0;
    --text-light: #94A3B8;
    --border-color: #1E2433;
    --header-bg: rgba(9, 10, 15, 0.85);
    --footer-bg: #05060A;
    --footer-text: #94A3B8;
    --font-mono: 'Consolas', 'Menlo', 'Monaco', monospace;
    --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.7);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html[data-theme="light"] {
    --bg-color: #F8FAFC;
    --card-bg: #FFFFFF;
    --primary-color: #0070F3;
    --primary-glow: rgba(0, 112, 243, 0.4);
    --accent-color: #D97706;
    --text-color: #0F172A;
    --text-light: #475569;
    --border-color: #E2E8F0;
    --header-bg: rgba(248, 250, 252, 0.85);
    --footer-bg: #F1F5F9;
    --footer-text: #475569;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    /* High-tech network background pattern */
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 50px 50px;
}

html[data-theme="light"] body {
    background-image: 
        linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

a { color: var(--primary-color); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-color); text-shadow: 0 0 8px var(--primary-glow); }

/* Header & Nav */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}
.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}
.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-color);
    letter-spacing: -0.5px;
}
.logo:hover { text-shadow: none; }

.main-nav {
    display: flex;
    gap: 20px;
}
.main-nav a {
    color: var(--text-light);
    font-size: 0.95rem;
    font-weight: 500;
}
.main-nav a:hover {
    color: var(--primary-color);
    text-shadow: none;
}
.nav-highlight {
    color: var(--primary-color) !important;
    font-weight: 600 !important;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* Status Indicator */
.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-color);
    background: var(--card-bg);
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    box-shadow: inset 0 0 10px rgba(0,0,0,0.2);
}
.status-dot {
    width: 8px;
    height: 8px;
    background-color: var(--primary-color);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--primary-glow);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 var(--primary-glow); }
    70% { box-shadow: 0 0 0 6px rgba(0, 210, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 210, 255, 0); }
}

/* Theme Toggle */
.theme-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}
.theme-toggle:hover {
    background-color: var(--card-bg);
    border-color: var(--primary-color);
    color: var(--primary-color);
}
.sun-icon { display: none; }
.moon-icon { display: block; }
html[data-theme="light"] .sun-icon { display: block; }
html[data-theme="light"] .moon-icon { display: none; }

/* Hero */
.hero {
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}
.center-text { text-align: center; position: relative; z-index: 2; }
.headline {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
    letter-spacing: -1px;
}
.highlight-text {
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.sub-headline {
    font-size: 1.15rem;
    color: var(--text-light);
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}
.hero-telemetry {
    display: inline-flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    background: var(--card-bg);
    padding: 10px 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
}
.telemetry-item { color: var(--text-light); }
.telemetry-item b { color: var(--primary-color); font-weight: normal; }

/* Buttons */
.cta-btn {
    display: inline-block;
    padding: 14px 36px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 6px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 1px;
}
.primary-btn {
    background-color: var(--primary-color);
    color: #000;
    border: 1px solid var(--primary-color);
    box-shadow: 0 0 15px var(--primary-glow);
}
.primary-btn:hover {
    background-color: transparent;
    color: var(--primary-color);
    text-shadow: none;
    box-shadow: 0 0 25px var(--primary-glow);
}
.outline-btn {
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}
.outline-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 0 15px var(--primary-glow);
}

/* Sections & Grid */
section { padding: 80px 0; }
.section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    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; }

/* Cards */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 35px 30px;
    position: relative;
    transition: var(--transition);
}
.card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(0, 210, 255, 0.1);
    transform: translateY(-2px);
}
.icon-wrapper {
    width: 48px;
    height: 48px;
    background: rgba(0, 210, 255, 0.1);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    margin-bottom: 20px;
}
.alert-color {
    background: rgba(255, 184, 0, 0.1);
    color: var(--accent-color);
}
.card h3 { font-size: 1.25rem; margin-bottom: 12px; }
.card p { color: var(--text-light); font-size: 0.95rem; }

/* Progress Bar */
.progress-bar-container {
    width: 100%;
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    margin-top: 20px;
    overflow: hidden;
}
.progress-bar {
    height: 100%;
    background: var(--primary-color);
    box-shadow: 0 0 8px var(--primary-color);
    animation: load 2s ease-out;
}
@keyframes load { from { width: 0; } }

/* Pricing */
.pricing-card { text-align: left; display: flex; flex-direction: column; }
.pricing-card .badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: var(--accent-color);
    color: #000;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1px;
}
.pricing-card .price { font-size: 1rem; color: var(--text-light); margin: 15px 0 25px; }
.pricing-card .price span { font-size: 2.5rem; font-weight: 700; color: var(--text-color); font-family: var(--font-mono); }
.tech-list {
    list-style: none;
    margin-bottom: 35px;
    flex-grow: 1;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}
.tech-list li {
    margin-bottom: 12px;
    color: var(--text-color);
    display: flex;
    justify-content: space-between;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 6px;
}
.tech-list li span { color: var(--text-light); }
.popular { border: 1px solid var(--primary-color); box-shadow: 0 0 20px rgba(0, 210, 255, 0.15); }

/* Reviews */
.review-card p { font-family: var(--font-mono); font-size: 0.9rem; color: var(--text-light); line-height: 1.6; margin-bottom: 20px; }
.reviewer { font-weight: 600; text-align: right; color: var(--primary-color); font-family: var(--font-mono); font-size: 0.85rem; }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { margin-bottom: 30px; padding-bottom: 30px; border-bottom: 1px solid var(--border-color); }
.faq-item:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.faq-item h4 { font-size: 1.1rem; margin-bottom: 12px; color: var(--text-color); }
.faq-item p { color: var(--text-light); font-size: 0.95rem; }

/* Footer */
.footer { background-color: var(--footer-bg); color: var(--footer-text); padding: 50px 0 40px; margin-top: 40px; border-top: 1px solid var(--border-color); }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 25px; }
.footer-nav { display: flex; gap: 30px; flex-wrap: wrap; justify-content: center; }
.footer-nav a { color: var(--footer-text); font-size: 0.9rem; }
.footer-nav a:hover { color: var(--primary-color); }

/* Subpages Content */
.subpage-main { padding: 80px 20px; min-height: calc(100vh - 220px); max-width: 800px; margin: 0 auto; }
.subpage-main h1 { margin-bottom: 40px; font-size: 2.2rem; text-align: center; }
.subpage-main h2 { margin-top: 40px; margin-bottom: 20px; font-size: 1.3rem; color: var(--primary-color); }
.subpage-main p { margin-bottom: 18px; color: var(--text-light); font-size: 1.05rem; }
.subpage-main ul { margin-left: 20px; margin-bottom: 25px; color: var(--text-light); font-size: 1.05rem; }
.subpage-main li { margin-bottom: 10px; }
.subpage-main li a { font-weight: 600; }

/* Responsive */
@media (max-width: 992px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .headline { font-size: 2.2rem; }
    .grid-3, .grid-2 { grid-template-columns: 1fr; }
    .status-indicator { display: none; }
    .header-inner {
        flex-wrap: wrap;
        height: auto;
        padding: 15px 0;
    }
    .header-right {
        position: absolute;
        right: 20px;
        top: 15px;
    }
    .logo { margin-bottom: 10px; width: 100%; }
    .main-nav {
        display: flex;
        overflow-x: auto;
        padding-bottom: 10px;
        white-space: nowrap;
        width: 100%;
        margin-top: 10px;
    }
    /* Hide scrollbar for nav */
    .main-nav::-webkit-scrollbar { display: none; }
    .cta-btn { display: block; width: 100%; padding: 16px; }
}