:root {
    --bg:       #223459;
    --surface:  #131F39;
    --surface2: #0e1828;
    --border:   rgba(255,255,255,0.08);
    --border-hov: rgba(255,255,255,0.14);
    --red:      #e63946;
    --red-dim:  rgba(230,57,70,0.12);
    --green:    #3fb950;
    --green-dim:rgba(63,185,80,0.12);
    --blue:     #58a6ff;
    --amber:    #d29922;
    --amber-dim:rgba(210,153,34,0.12);
    --brown:    #c9a45a;
    --text:     #ffffff;
    --muted:    #DAE1F1;
    --dim:      #7D94C5;
}

*, *::before, *::after { box-sizing: border-box; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: "Inter","Segoe UI",system-ui,sans-serif;
    font-size: 14px;
    min-height: 100vh;
    margin: 0;
}

/* ── Cards ── */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}
.card-header {
    background: var(--surface2);
    border-bottom: 1px solid var(--border);
    padding: 9px 14px;
    font-size: 10px;
    font-weight: 600;
    color: var(--dim);
    text-transform: uppercase;
    letter-spacing: .1em;
}
.card-body { padding: 14px; }

/* ── Collapsible location sections (Timetable overview) ── */
.location-collapse { overflow: visible; }
.location-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--surface2);
    border: none;
    padding: 12px 14px;
    text-align: left;
    cursor: pointer;
    color: var(--text);
}
.location-toggle .bi-chevron-down {
    transition: transform .15s;
    color: var(--dim);
}
.location-toggle:not(.collapsed) .bi-chevron-down { transform: rotate(180deg); }
.location-toggle-name { font-weight: 700; font-size: 13px; }
.location-toggle-desc { color: var(--dim); font-size: 11px; flex: 1; }

/* ── Navbar ── */
.navbar { background: var(--surface) !important; border-bottom: 1px solid var(--border) !important; }
.navbar-brand { color: var(--muted) !important; font-weight: 800; }
.nav-link { color: var(--dim) !important; font-size: 13px; }
.nav-link:hover { color: var(--muted) !important; }

/* ── Page containers ── */
.page-wrap { padding: 14px; }
.section-header {
    font-size: 11px;
    font-weight: 600;
    color: var(--dim);
    text-transform: uppercase;
    letter-spacing: .1em;
    margin-bottom: 12px;
}

/* ── Badges ── */
.badge-status {
    font-size: 10px;
    font-weight: 600;
    padding: 2px 7px;
    border-radius: 4px;
    letter-spacing: .04em;
    text-transform: uppercase;
}
.badge-pending   { background: var(--amber-dim); color: var(--amber); }
.badge-approved  { background: var(--green-dim); color: var(--green); }
.badge-denied    { background: var(--red-dim);   color: var(--red); }
.badge-cancelled { background: rgba(255,255,255,.07); color: var(--dim); border: 1px solid var(--border); }

/* ── Filter row / forms ── */
.filter-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; align-items: center; }
.filter-select, select.form-select {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--muted);
    border-radius: 6px;
    font-size: 12px;
    padding: 5px 10px;
    appearance: none;
    cursor: pointer;
}
.filter-select:focus, select.form-select:focus {
    outline: none;
    background-color: var(--surface);
    border-color: rgba(88,166,255,.5);
    color: var(--muted);
    box-shadow: none;
}
.form-control {
    background-color: var(--surface);
    border-color: var(--border);
    color: var(--text);
}
.form-control:focus {
    background-color: var(--surface);
    border-color: rgba(88,166,255,.5);
    color: var(--text);
    box-shadow: none;
}
.form-label { font-size: 12px; color: var(--dim); margin-bottom: 4px; }
.form-check-input { background-color: var(--surface); border-color: var(--border); }
.text-danger { color: #f4a0a7 !important; font-size: 12px; }

/* ── Tables ── */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
    padding: 6px 8px;
    font-size: 10px;
    font-weight: 600;
    color: var(--dim);
    text-transform: uppercase;
    letter-spacing: .06em;
    border-bottom: 1px solid var(--border);
    text-align: left;
}
.data-table td {
    padding: 8px 8px;
    font-size: 12px;
    color: var(--muted);
    border-bottom: 1px solid rgba(255,255,255,.04);
    vertical-align: middle;
}

/* ── Buttons ── */
.btn-approve { background: var(--green); border-color: var(--green); color: #062b0a; font-weight: 700; }
.btn-approve:hover { background: #56cf68; border-color: #56cf68; color: #062b0a; }
.btn-deny { background: var(--red); border-color: var(--red); color: #fff; font-weight: 700; }
.btn-deny:hover { background: #ef5a66; border-color: #ef5a66; }
.btn-outline-light { border-color: var(--border); color: var(--muted); }
.btn-outline-light:hover { background: var(--surface2); border-color: var(--border-hov); color: var(--muted); }

/* ── Week navigation ── */
.week-nav { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.week-nav-label { font-size: 13px; font-weight: 700; color: var(--muted); min-width: 220px; text-align: center; }

/* ── Weekly calendar grid ── */
.week-grid {
    display: grid;
    grid-template-columns: 56px repeat(7, 1fr);
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    background: var(--surface);
}
.week-grid-corner, .day-header {
    background: var(--surface2);
    border-bottom: 1px solid var(--border);
    border-right: 1px solid var(--border);
    padding: 6px 4px;
    text-align: center;
    font-size: 11px;
    font-weight: 700;
    color: var(--dim);
    position: sticky;
    top: 0;
}
.day-header.is-today { color: var(--blue); }
.day-header .day-date { font-size: 10px; color: var(--dim); font-weight: 400; display: block; }

.time-col {
    display: grid;
    border-right: 1px solid var(--border);
}
.time-col .time-label {
    font-size: 9px;
    color: var(--dim);
    text-align: right;
    padding: 2px 6px 0 0;
    border-top: 1px solid rgba(255,255,255,.04);
}

.day-col {
    position: relative;
    display: grid;
    border-right: 1px solid var(--border);
}
.day-col:last-child { border-right: none; }
.day-col .slot-row { border-top: 1px solid rgba(255,255,255,.04); }

.booking-chip {
    position: absolute;
    border-radius: 6px;
    padding: 3px 6px;
    font-size: 10px;
    line-height: 1.3;
    overflow: hidden;
    border-left: 3px solid var(--dim);
    text-decoration: none !important;
    display: block;
}
.booking-chip .chip-title { font-weight: 700; color: inherit; display: block; }
.booking-chip .chip-time { opacity: .85; }
.booking-chip .chip-portion {
    display: inline-block;
    margin-top: 1px;
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .04em;
    opacity: .85;
}
.booking-chip.status-approved  { background: var(--green-dim); border-left-color: var(--green); color: #cdf7d3; }
.booking-chip.status-pending   { background: var(--amber-dim); border-left-color: var(--amber); color: #f6e2ad; }
.booking-chip.status-denied,
.booking-chip.status-cancelled { background: rgba(255,255,255,.05); border-left-color: var(--dim); color: var(--dim); text-decoration: line-through !important; }

.legend { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.legend-item { display: flex; align-items: center; gap: 5px; font-size: 11px; color: var(--muted); }
.legend-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }

/* ── Click-and-drag booking selection ── */
.day-col.js-day-col { cursor: crosshair; }
.day-selection-overlay {
    position: absolute;
    left: 2px;
    right: 2px;
    background: rgba(88,166,255,.22);
    border: 1px dashed var(--blue);
    border-radius: 6px;
    pointer-events: none;
    z-index: 5;
}
.selection-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--surface2);
    border: 1px solid rgba(88,166,255,.4);
    border-radius: 8px;
    padding: 8px 12px;
    margin-bottom: 12px;
    font-size: 12px;
    color: var(--muted);
}