:root {
    color-scheme: dark;
    --bg: #0f1115;
    --bg-elev: #171a21;
    --bg-elev-2: #1e222b;
    --border: #2a2f3a;
    --text: #e6e8eb;
    --text-dim: #9aa2ad;
    --accent: #5b8cff;
    --accent-hover: #7aa0ff;
    --danger: #ff5c5c;
    --danger-hover: #ff7a7a;
    --success: #3ecf8e;
    --radius: 10px;
}

* { box-sizing: border-box; }

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

.container {
    max-width: 860px;
    margin: 0 auto;
    padding: 32px 20px 80px;
}

header.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-elev);
}

header.topbar h1 {
    font-size: 1.05rem;
    margin: 0;
    font-weight: 600;
}

header.topbar a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.9rem;
}

header.topbar a:hover { color: var(--text); }

h2 { font-size: 1.3rem; margin-top: 0; }

.card {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 24px;
}

label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-bottom: 6px;
}

input[type="text"],
input[type="password"],
input[type="file"] {
    width: 100%;
    background: var(--bg-elev-2);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 12px;
    color: var(--text);
    font-size: 0.95rem;
    margin-bottom: 16px;
}

input[type="text"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: var(--accent);
}

button, .btn {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 10px 18px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
}

button:hover, .btn:hover { background: var(--accent-hover); }

button.danger, .btn.danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
button.danger:hover, .btn.danger:hover { background: var(--danger); color: #fff; }

button.small, .btn.small { padding: 6px 12px; font-size: 0.8rem; }

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th, td {
    text-align: left;
    padding: 12px 10px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

th { color: var(--text-dim); font-weight: 500; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; }

tr:last-child td { border-bottom: none; }

.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge.active { background: rgba(62, 207, 142, 0.15); color: var(--success); }
.badge.used { background: rgba(154, 162, 173, 0.15); color: var(--text-dim); }

.link-row {
    display: flex;
    gap: 8px;
    align-items: center;
}

.link-row input {
    margin-bottom: 0;
    font-size: 0.8rem;
    flex: 1;
    min-width: 0;
}

.flash {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.flash.success { background: rgba(62, 207, 142, 0.12); color: var(--success); border: 1px solid rgba(62, 207, 142, 0.3); }
.flash.error { background: rgba(255, 92, 92, 0.12); color: var(--danger); border: 1px solid rgba(255, 92, 92, 0.3); }
.flash.info { background: rgba(91, 140, 255, 0.12); color: var(--accent); border: 1px solid rgba(91, 140, 255, 0.3); }

.empty-state {
    color: var(--text-dim);
    text-align: center;
    padding: 40px 0;
}

.center-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.center-card {
    width: 100%;
    max-width: 380px;
}

.hint { color: var(--text-dim); font-size: 0.8rem; margin-top: -8px; margin-bottom: 16px; }

.icon-file { font-size: 3rem; margin-bottom: 8px; display: block; }

.text-center { text-align: center; }

.muted { color: var(--text-dim); }