:root {
    --bg-1: #f3f7f9;
    --bg-2: #d9e7ee;
    --surface: #ffffff;
    --text: #1c2630;
    --muted: #5d6b79;
    --primary: #006d77;
    --accent: #ff8a5b;
    --ok: #2e7d32;
    --warn: #b7791f;
    --danger: #b42318;
    --border: #d5e2ea;
    --shadow: 0 12px 30px rgba(3, 31, 57, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Space Grotesk', 'Segoe UI', sans-serif;
    color: var(--text);
    background: radial-gradient(circle at 20% 0%, #ffffff 0%, var(--bg-1) 35%, var(--bg-2) 100%);
}

a {
    color: inherit;
    text-decoration: none;
}

.app-shell {
    min-height: 100vh;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.85);
    border-bottom: 1px solid var(--border);
}

.topbar-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.9rem 1rem;
}

.brand {
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--primary);
}

.nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.nav-links a {
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    color: var(--muted);
    font-size: 0.92rem;
    transition: 0.2s ease;
}

.nav-links a.active,
.nav-links a:hover {
    color: var(--primary);
    background: rgba(0, 109, 119, 0.08);
}

.page-wrap {
    max-width: 1200px;
    margin: 1.4rem auto;
    padding: 0 1rem 2rem;
}

.page-title {
    margin: 0 0 1rem;
    font-size: 1.6rem;
    font-weight: 700;
}

.page-subtitle {
    margin: -0.6rem 0 1rem;
    color: var(--muted);
    font-size: 0.95rem;
}

.grid {
    display: grid;
    gap: 1rem;
}

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

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 1rem;
    box-shadow: var(--shadow);
}

.card h3,
.card h4 {
    margin: 0 0 0.8rem;
}

.metric {
    font-size: 1.6rem;
    font-weight: 700;
}

.metric-sub {
    font-size: 0.85rem;
    color: var(--muted);
}

form {
    display: grid;
    gap: 0.65rem;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 0.65rem;
}

label {
    display: block;
    font-size: 0.84rem;
    color: var(--muted);
    margin-bottom: 0.22rem;
}

input,
select,
textarea,
button {
    width: 100%;
    border-radius: 9px;
    border: 1px solid var(--border);
    padding: 0.58rem 0.68rem;
    font: inherit;
    background: #fff;
}

textarea {
    min-height: 90px;
    resize: vertical;
}

button {
    cursor: pointer;
}

.btn {
    border: 0;
    background: var(--primary);
    color: #fff;
    font-weight: 600;
    letter-spacing: 0.01em;
}

.btn.secondary {
    background: #edf4f7;
    color: var(--text);
    border: 1px solid var(--border);
}

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

.row {
    display: flex;
    gap: 0.65rem;
    flex-wrap: wrap;
}

.row > * {
    flex: 1;
}

.table-wrap {
    overflow: auto;
}

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

th,
td {
    text-align: left;
    padding: 0.58rem 0.55rem;
    border-bottom: 1px solid #edf2f6;
}

th {
    color: #4e5c6d;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.status {
    display: inline-block;
    padding: 0.22rem 0.55rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status.success {
    background: #e8f5ea;
    color: var(--ok);
}

.status.warning {
    background: #fff7e6;
    color: var(--warn);
}

.status.danger {
    background: #feecec;
    color: var(--danger);
}

.badge {
    display: inline-block;
    padding: 0.2rem 0.45rem;
    background: #eef6f7;
    color: var(--primary);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
}

.toast {
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    z-index: 50;
    min-width: 250px;
    max-width: 420px;
    padding: 0.8rem 0.95rem;
    border-radius: 10px;
    color: #fff;
    box-shadow: var(--shadow);
    transform: translateY(14px);
    opacity: 0;
    pointer-events: none;
    transition: 0.25s ease;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.success {
    background: #2f855a;
}

.toast.error {
    background: #c53030;
}

.toast.info {
    background: #2b6cb0;
}

.fc .fc-toolbar-title {
    font-size: 1rem;
}

@media (max-width: 720px) {
    .page-wrap {
        margin-top: 1rem;
    }

    .topbar-inner {
        align-items: flex-start;
        flex-direction: column;
    }

    .metric {
        font-size: 1.35rem;
    }
}