:root {
    --primary: #1b6ca8;
    --secondary: #f2a65a;
    --bg: #f8fafc;
    --text: #13293d;
    --card: #ffffff;
    --muted: #6b7280;
    --danger: #b42318;
    --success: #15803d;
    --border: #d0d8e2;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(160deg, var(--bg) 0%, #ffffff 70%);
    color: var(--text);
}

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

img {
    max-width: 100%;
    display: block;
}

.container {
    width: min(1100px, 92%);
    margin: 0 auto;
}

.page {
    padding: 1rem 0 2rem;
}

.topbar {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 5;
}

.topbar-inner {
    min-height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.nav-inline {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    align-items: center;
}

.nav-inline a {
    padding: 0.3rem 0.6rem;
    border-radius: 999px;
}

.nav-inline a.active,
.nav-inline a:hover {
    background: color-mix(in srgb, var(--primary) 15%, #fff);
}

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

.grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 1rem;
    box-shadow: 0 10px 20px rgba(15, 23, 42, 0.04);
}

.card h2,
.card h3 {
    margin-top: 0;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

input,
select,
textarea,
button {
    font: inherit;
}

input,
select,
textarea {
    width: 100%;
    padding: 0.65rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #fff;
    color: var(--text);
}

input:focus,
select:focus,
textarea:focus {
    outline: 2px solid color-mix(in srgb, var(--primary) 25%, #fff);
    border-color: var(--primary);
}

textarea {
    min-height: 92px;
    resize: vertical;
}

.form-row {
    margin-bottom: 0.85rem;
}

.btn {
    border: 0;
    border-radius: 10px;
    cursor: pointer;
    padding: 0.68rem 1rem;
    font-weight: 600;
    background: var(--primary);
    color: #fff;
}

.btn.secondary {
    background: var(--secondary);
    color: #1f2937;
}

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

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

.btn.small {
    padding: 0.45rem 0.7rem;
    font-size: 0.9rem;
}

.alert {
    border-radius: 10px;
    padding: 0.75rem 0.9rem;
    margin-bottom: 1rem;
}

.alert.success {
    background: #ecfdf3;
    color: #166534;
    border: 1px solid #a7f3d0;
}

.alert.error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

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

th,
td {
    padding: 0.6rem 0.45rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.status {
    display: inline-block;
    border-radius: 999px;
    padding: 0.15rem 0.55rem;
    font-size: 0.82rem;
    border: 1px solid transparent;
}

.status.pending {
    background: #fff7ed;
    color: #9a3412;
    border-color: #fed7aa;
}

.status.confirmed {
    background: #eef2ff;
    color: #1d4ed8;
    border-color: #c7d2fe;
}

.status.cancelled {
    background: #fef2f2;
    color: #991b1b;
    border-color: #fecaca;
}

.status.completed {
    background: #ecfdf3;
    color: #166534;
    border-color: #a7f3d0;
}

.banner {
    border-radius: 14px;
    overflow: hidden;
    margin-bottom: 1rem;
    border: 1px solid var(--border);
    min-height: 180px;
    background: linear-gradient(130deg, color-mix(in srgb, var(--primary) 22%, #fff), color-mix(in srgb, var(--secondary) 22%, #fff));
    display: grid;
    place-items: center;
}

.hero-title {
    margin: 0;
    font-size: clamp(1.4rem, 2vw + 1rem, 2.2rem);
}

.slot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(95px, 1fr));
    gap: 0.55rem;
}

.slot-btn {
    border: 1px solid var(--border);
    background: #fff;
    border-radius: 10px;
    padding: 0.55rem;
    cursor: pointer;
    font-weight: 600;
}

.slot-btn.active {
    border-color: var(--primary);
    background: color-mix(in srgb, var(--primary) 12%, #fff);
}

.slot-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

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

.login-wrap {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1.2rem;
}

.login-card {
    width: min(420px, 100%);
}

@media (max-width: 900px) {
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }

    .topbar {
        position: static;
    }

    table,
    thead,
    tbody,
    tr,
    th,
    td {
        display: block;
    }

    thead {
        display: none;
    }

    tr {
        border: 1px solid var(--border);
        border-radius: 10px;
        margin-bottom: 0.8rem;
        padding: 0.35rem;
        background: #fff;
    }

    td {
        border-bottom: 0;
        padding: 0.4rem;
    }
}