:root {
    --bg: #0b0f17;
    --card: #121a2a;
    --text: #e8eefc;
    --muted: #a9b4cf;
    --border: rgba(255, 255, 255, 0.08);
    --danger: #ff6b6b;
    --ok: #3ddc97;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    color: var(--text);
}

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    background: var(--bg);
}

h1 {
    margin: 0;
    font-size: 20px;
    letter-spacing: 0.2px;
}

.container {
    padding: 24px;
    max-width: 980px;
    margin: 0 auto;
}

.card {
    background: rgba(18, 26, 42, 0.86);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px;
    backdrop-filter: blur(8px);
}

.card-title {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--muted);
    margin-bottom: 12px;
}

.row {
    display: flex;
    gap: 10px;
    align-items: center;
}

.btn {
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
    padding: 10px 12px;
    border-radius: 10px;
    cursor: pointer;
}

.btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.list {
    margin-top: 14px;
    display: grid;
    gap: 12px;
}

.item {
    display: grid;
    grid-template-columns: 1fr 140px 140px;
    gap: 12px;
    align-items: center;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 12px;
}

.name {
    font-weight: 600;
}

.meta {
    color: var(--muted);
    font-size: 12px;
    margin-top: 4px;
}

.input {
    width: 100%;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text);
}

.error {
    margin-top: 12px;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid rgba(255, 107, 107, 0.25);
    background: rgba(255, 107, 107, 0.08);
    color: var(--danger);
    white-space: pre-wrap;
}

.snackbar {
    position: fixed;
    left: 50%;
    bottom: 18px;
    transform: translateX(-50%);
    background: rgba(18, 26, 42, 0.95);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px 14px;
    min-width: 280px;
    text-align: center;
}

.snackbar.ok { border-color: rgba(61, 220, 151, 0.25); }
.snackbar.danger { border-color: rgba(255, 107, 107, 0.25); }

.hidden { display: none; }