:root {
    --primary: #0b4a8f;
    --primary-dark: #073366;
    --success: #167447;
    --warn: #c87514;
    --error: #b3261e;
    --bg: #f7f9fc;
    --card-bg: #ffffff;
    --border: #d6e3f2;
    --text: #1a1a1a;
    --text-muted: #666;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.topnav {
    display: flex;
    align-items: center;
    gap: 24px;
    background: #fff;
    padding: 12px 24px;
    border-bottom: 2px solid var(--border);
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.topnav .brand {
    font-weight: 700;
    color: var(--primary);
    font-size: 16px;
    letter-spacing: 0.5px;
}
.topnav .brand span { color: var(--text-muted); font-weight: 400; }
.topnav .nav-links {
    list-style: none;
    display: flex;
    gap: 4px;
    margin: 0;
    padding: 0;
    flex: 1;
}
.topnav .nav-links a {
    padding: 8px 14px;
    border-radius: 6px;
    color: var(--text);
    font-weight: 500;
}
.topnav .nav-links a:hover { background: var(--bg); text-decoration: none; }
.topnav .user-info { display: flex; align-items: center; gap: 12px; color: var(--text-muted); font-size: 14px; }

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

h1 { color: var(--primary-dark); margin: 0 0 16px; font-size: 24px; }
h2 { color: var(--primary); margin: 16px 0 12px; font-size: 18px; }
h3 { margin: 0 0 12px; font-size: 16px; color: var(--primary-dark); }

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}
.page-header h1 { margin: 0; }

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 18px;
    margin-bottom: 18px;
}
.card.card-success { border-left: 4px solid var(--success); }
.card.card-warn { border-left: 4px solid var(--warn); }
.card.card-error { border-left: 4px solid var(--error); }
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.card-header h3 { margin: 0; }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
    border-radius: 8px;
    padding: 16px;
}
.stat-card.warn { border-left-color: var(--warn); }
.stat-label { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.stat-value { font-size: 32px; font-weight: 700; color: var(--primary-dark); margin: 4px 0; }
.stat-sub { font-size: 13px; color: var(--text-muted); }

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    margin-bottom: 18px;
}
@media (max-width: 768px) { .grid-2 { grid-template-columns: 1fr; } }

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 8px 0;
    font-size: 14px;
}
.data-table th, .data-table td {
    padding: 9px 12px;
    border-bottom: 1px solid var(--border);
    text-align: left;
}
.data-table th { background: var(--bg); font-weight: 600; color: var(--primary-dark); }
.data-table tr:hover { background: rgba(11, 74, 143, 0.03); }
.data-table .muted { color: var(--text-muted); text-align: center; padding: 20px; }

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    background: #e8eef6;
    color: var(--primary-dark);
    letter-spacing: 0.3px;
}
.badge-active, .badge-success { background: #d8f0e4; color: var(--success); }
.badge-revoked, .badge-error { background: #fadcd9; color: var(--error); }
.badge-suspended, .badge-warn { background: #fce8c9; color: var(--warn); }
.badge-expired, .badge-superseded { background: #e3e3e3; color: #555; }

.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 6px;
    border: 1px solid transparent;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.1s;
}
.btn:hover { opacity: 0.9; text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-ghost { background: transparent; color: var(--primary); border-color: var(--border); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-block { width: 100%; }

.form-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    max-width: 600px;
}
.form-card label {
    display: block;
    margin-bottom: 14px;
    font-weight: 500;
    font-size: 14px;
}
.form-card input, .form-card textarea, .form-card select {
    display: block;
    width: 100%;
    margin-top: 4px;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 5px;
    font-size: 14px;
    font-family: inherit;
}
.form-card input:focus, .form-card textarea:focus { outline: 2px solid var(--primary); border-color: var(--primary); }
.form-card small { color: var(--text-muted); font-weight: 400; font-size: 12px; }
.form-card .required { color: var(--error); }
.form-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 18px; }

.alert {
    padding: 12px 16px;
    border-radius: 6px;
    margin: 12px 0;
    border-left: 4px solid;
}
.alert-error { background: #fdecea; border-left-color: var(--error); color: var(--error); }
.alert-warn { background: #fdf4e8; border-left-color: var(--warn); color: var(--warn); }
.alert-success { background: #e6f4ec; border-left-color: var(--success); color: var(--success); }

.login-box {
    max-width: 380px;
    margin: 60px auto;
    background: #fff;
    padding: 32px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}
.login-box h1 { color: var(--primary); font-size: 22px; margin: 0 0 4px; text-align: center; }
.login-box .subtitle { color: var(--text-muted); text-align: center; margin-bottom: 24px; }
.login-box label { display: block; margin-bottom: 14px; font-weight: 500; font-size: 14px; }
.login-box input {
    display: block;
    width: 100%;
    margin-top: 4px;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: 5px;
}

code {
    background: #f3f5f8;
    padding: 1px 6px;
    border-radius: 3px;
    font-family: "Consolas", "Courier New", monospace;
    font-size: 13px;
    color: var(--error);
}

pre.copy-block {
    background: #1e2530;
    color: #e6e6e6;
    padding: 12px;
    border-radius: 6px;
    font-family: "Consolas", monospace;
    font-size: 12px;
    overflow-x: auto;
    user-select: all;
    line-height: 1.4;
}

.dl-grid {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 6px 16px;
    margin: 0;
}
.dl-grid dt { color: var(--text-muted); font-weight: 500; font-size: 13px; }
.dl-grid dd { margin: 0; font-size: 14px; }

.muted { color: var(--text-muted); }
.text-error { color: var(--error); font-weight: 600; }
.text-warn { color: var(--warn); font-weight: 600; }

.notes {
    margin-top: 12px;
    padding: 10px 12px;
    background: var(--bg);
    border-radius: 5px;
    font-size: 13px;
    color: var(--text-muted);
    border-left: 3px solid var(--border);
}

.key-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.key-list li {
    padding: 6px 0;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}
.key-list li:last-child { border-bottom: 0; }

footer {
    text-align: center;
    padding: 24px;
    color: var(--text-muted);
    font-size: 12px;
}