:root {
    --bg: #f4f6f9;
    --card: #fff;
    --border: #e2e8f0;
    --text: #1e293b;
    --muted: #64748b;
    --primary: #0f4c81;
    --primary-hover: #0d3d66;
    --success: #059669;
    --success-bg: #d1fae5;
    --radius: 8px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: 'Tajawal', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

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

.topbar {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.5rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand a { font-weight: 700; font-size: 1.15rem; color: var(--primary); text-decoration: none; }
.brand .muted { color: var(--muted); font-size: 0.85rem; margin-right: 0.5rem; }

.nav-tabs { display: flex; gap: 0.5rem; }
.nav-tabs a {
    padding: 0.4rem 1rem;
    border-radius: var(--radius);
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
}
.nav-tabs a.active { background: var(--primary); color: #fff; }

.container { max-width: 1400px; margin: 0 auto; padding: 1.5rem; }

.alert { padding: 0.75rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; }
.alert-success { background: var(--success-bg); color: var(--success); }

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin-bottom: 1.25rem;
}

.card h2 { margin: 0 0 1rem; font-size: 1.1rem; color: var(--primary); }

.page-title { margin: 0 0 0.25rem; font-size: 1.5rem; }
.page-sub { color: var(--muted); margin: 0 0 1.5rem; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { border: 1px solid var(--border); padding: 0.5rem 0.6rem; text-align: right; }
th { background: #f1f5f9; font-weight: 600; white-space: nowrap; }
tr:nth-child(even) { background: #fafbfc; }

input[type="text"],
input[type="number"] {
    width: 100%;
    padding: 0.35rem 0.5rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-family: inherit;
    font-size: 0.9rem;
}

input:focus { outline: 2px solid var(--primary); border-color: var(--primary); }

.btn {
    display: inline-block;
    padding: 0.55rem 1.25rem;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
}
.btn:hover { background: var(--primary-hover); text-decoration: none; color: #fff; }

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}
.btn-outline:hover { background: #eff6ff; }

.actions { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 1rem; }

.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.8rem;
    background: #e0f2fe;
    color: var(--primary);
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    text-align: center;
}

.stat .val { font-size: 1.4rem; font-weight: 700; color: var(--primary); }
.stat .lbl { font-size: 0.85rem; color: var(--muted); }

.price-cell { font-weight: 600; color: var(--primary); white-space: nowrap; }
.price-zero { color: var(--muted); }

.scenario-header { background: #dbeafe !important; }
.hotel-num { color: var(--muted); font-size: 0.85rem; }

@media (max-width: 768px) {
    .container { padding: 1rem; }
    table { font-size: 0.8rem; }
    th, td { padding: 0.35rem; }
}