/* === ДНЕВНАЯ ТЕМА (ПО УМОЛЧАНИЮ) === */
:root {
    --bg-light: #f8fafc;
    --bg-card: #ffffff;
    --primary-navy: #0f172a;
    --accent-cyan: #0284c7;
    --border-color: #e2e8f0;
    --text-dark: #1e293b;
    --text-muted: #64748b;
    --header-bg: rgba(255, 255, 255, 0.9);
    --glow-shadow: 0 10px 30px -10px rgba(2, 132, 199, 0.15);
}

/* === НОЧНАЯ ТЕМА (АВТОМАТИЧЕСКАЯ) === */
body.dark-theme {
    --bg-light: #070d19;
    --bg-card: rgba(13, 25, 48, 0.85);
    --primary-navy: #ffffff;
    --accent-cyan: #00f2fe;
    --border-color: rgba(0, 242, 254, 0.2);
    --text-dark: #e2e8f0;
    --text-muted: #94a3b8;
    --header-bg: rgba(7, 13, 25, 0.9);
    --glow-shadow: 0 0 25px rgba(0, 242, 254, 0.1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color 0.5s ease, color 0.5s ease;
}

h1, h2, h3, .brand-title {
    font-family: 'Cinzel', serif;
    letter-spacing: 0.5px;
}

a { text-decoration: none; color: inherit; transition: all 0.3s; }

header {
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-area { display: flex; align-items: center; gap: 12px; }
.logo-icon { font-size: 2rem; color: var(--accent-cyan); }

.brand-title { font-size: 1.2rem; font-weight: 700; color: var(--primary-navy); }
.brand-subtitle { font-size: 0.75rem; color: var(--accent-cyan); font-weight: 600; letter-spacing: 1px; }

nav ul { display: flex; list-style: none; gap: 10px; }
nav a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
    padding: 8px 16px;
    border-radius: 6px;
}

nav a:hover, nav a.active {
    color: var(--accent-cyan);
    background: rgba(2, 132, 199, 0.08);
    border: 1px solid var(--border-color);
}

.hero {
    padding: 60px 24px 30px;
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    font-size: 0.8rem;
    color: var(--accent-cyan);
    font-weight: 600;
    margin-bottom: 20px;
}

.pulse-dot {
    width: 8px; height: 8px;
    background-color: var(--accent-cyan);
    border-radius: 50%;
}

.hero h1 { font-size: 2.5rem; line-height: 1.2; margin-bottom: 15px; color: var(--primary-navy); }
.hero p { font-size: 1.1rem; color: var(--text-muted); max-width: 750px; margin: 0 auto; }

.main-container {
    max-width: 1280px;
    margin: 30px auto 60px;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 2.8fr 1.2fr;
    gap: 30px;
    width: 100%;
    flex: 1;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 25px;
    box-shadow: var(--glow-shadow);
}

.card h2, .card h3 {
    color: var(--primary-navy);
    font-size: 1.3rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
}

.card h2 i, .card h3 i { color: var(--accent-cyan); }

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.metric-box {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid var(--accent-cyan);
}

.metric-value { font-size: 1.1rem; font-weight: 700; color: var(--primary-navy); }
.metric-label { font-size: 0.85rem; color: var(--text-muted); }

.sidebar-item {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
}

.sidebar-item:last-child { border-bottom: none; }
.sidebar-label { color: var(--text-muted); }
.sidebar-val { color: var(--primary-navy); font-weight: 600; }

.input-group { margin-bottom: 15px; }
.input-group label { display: block; font-size: 0.9rem; margin-bottom: 5px; }
.input-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-light);
    color: var(--text-dark);
}

footer {
    border-top: 1px solid var(--border-color);
    background: var(--bg-card);
    padding: 25px 24px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

@media (max-width: 900px) {
    .main-container { grid-template-columns: 1fr; }
    nav ul { flex-wrap: wrap; }
}