/* Modern Clean Lab Styling */
:root {
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --border: #e2e8f0;
    --accent: #38bdf8;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    padding-bottom: 50px;
}

.navbar {
    background: #0f172a;
    color: #fff;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
}

.navbar .logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: #38bdf8;
    text-decoration: none;
}

.navbar .nav-links {
    display: flex;
    gap: 15px;
    list-style: none;
}

.navbar .nav-links a {
    color: #cbd5e1;
    text-decoration: none;
    font-size: 0.95rem;
    padding: 6px 12px;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.navbar .nav-links a:hover,
.navbar .nav-links a.active {
    color: #ffffff;
    background: rgba(255,255,255,0.1);
}

.navbar .nav-links a.dashboard-btn {
    background: #2563eb;
    color: #fff;
    font-weight: 600;
}

.container {
    max-width: 900px;
    margin: 40px auto;
    padding: 0 20px;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    margin-bottom: 25px;
}

h1 {
    font-size: 2rem;
    margin-bottom: 15px;
    color: #0f172a;
}

h2 {
    font-size: 1.35rem;
    margin-top: 20px;
    margin-bottom: 10px;
    color: #1e293b;
}

p {
    margin-bottom: 15px;
    color: var(--text-main);
}

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.badge-info {
    background: #e0f2fe;
    color: #0284c7;
}

.internal-links {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    margin: 20px 0;
}

.internal-links a {
    display: block;
    background: #f1f5f9;
    padding: 12px 16px;
    border-radius: 8px;
    color: #2563eb;
    text-decoration: none;
    font-weight: 500;
    border: 1px solid #e2e8f0;
    transition: all 0.2s;
}

.internal-links a:hover {
    background: #e2e8f0;
    border-color: #cbd5e1;
}

.footer {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 40px;
}