:root {
    --bg: #f6f4f1;
    --bg-accent: #f1efe9;
    --text: #1f2a44;
    --muted: #6b7280;
    --primary: #0f766e;
    --primary-dark: #0b5d56;
    --border: #e2e8f0;
    --card: #ffffff;
    --danger: #b91c1c;
    --success: #166534;
    --warning: #92400e;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "IBM Plex Sans", "Helvetica Neue", sans-serif;
    color: var(--text);
    background: linear-gradient(120deg, var(--bg), var(--bg-accent));
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    background: #ffffff;
    border-bottom: 1px solid var(--border);
}

.brand {
    font-weight: 700;
    letter-spacing: 0.5px;
}

.user {
    display: flex;
    gap: 12px;
    align-items: center;
    color: var(--muted);
}

.nav {
    display: flex;
    gap: 16px;
    padding: 12px 24px;
    background: #ffffff;
    border-bottom: 1px solid var(--border);
}

.nav a {
    text-decoration: none;
    color: var(--text);
    font-weight: 600;
}

.nav a:hover {
    color: var(--primary);
}

.container {
    max-width: 1100px;
    margin: 24px auto 60px;
    padding: 0 20px;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 6px 20px rgba(15, 23, 42, 0.08);
}

.card + .card {
    margin-top: 16px;
}

.grid {
    display: grid;
    gap: 16px;
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

h1 {
    font-size: 24px;
    margin: 0 0 12px;
}

h2 {
    font-size: 18px;
    margin: 0 0 12px;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    border-bottom: 1px solid var(--border);
    padding: 10px 8px;
    text-align: left;
    font-size: 14px;
}

.table th {
    color: var(--muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 12px;
}

.form-row {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

label {
    display: block;
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 6px;
}

input,
select,
textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
}

textarea {
    min-height: 90px;
}

.btn,
.btn-link {
    display: inline-block;
    padding: 10px 16px;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
}

.btn {
    background: var(--primary);
    color: #ffffff;
}

.btn:hover {
    background: var(--primary-dark);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: rgba(15, 118, 110, 0.08);
}

.btn-link {
    background: transparent;
    color: var(--primary);
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-weight: 600;
}

.alert.error {
    background: #fee2e2;
    color: var(--danger);
}

.alert.success {
    background: #dcfce7;
    color: var(--success);
}

.alert.warning {
    background: #fef3c7;
    color: var(--warning);
}

.badge {
    padding: 4px 8px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    background: #e2e8f0;
}

.actions {
    display: flex;
    gap: 8px;
}

@media (max-width: 720px) {
    .nav {
        flex-wrap: wrap;
    }
}