/* styles.css — Rescheduler */
* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #eef2ff;
    --success: #16a34a;
    --success-bg: #dcfce7;
    --success-border: #86efac;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-400: #9ca3af;
    --gray-600: #4b5563;
    --gray-800: #1f2937;
}

body {
    font-family: -apple-system, "Segoe UI", Roboto, sans-serif;
    background: #f4f6fa;
    color: var(--gray-800);
    min-height: 100vh;
    padding-bottom: 40px;
}

/* HEADER */
header {
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,.1);
    position: sticky; top: 0; z-index: 50;
}
.header-inner {
    max-width: 1500px; margin: 0 auto; padding: 16px 24px;
    display: flex; align-items: center; justify-content: space-between;
    gap: 16px; flex-wrap: wrap;
}
header h1 { font-size: 1.4rem; }
header p { opacity: .9; font-size: .82rem; margin-top: 2px; }
.btn-light {
    background: rgba(255,255,255,.2); color: #fff;
    border: 1px solid rgba(255,255,255,.3); padding: 8px 14px;
}

main { max-width: 1500px; margin: 18px auto; padding: 0 16px; }

/* CONTROLS */
.controls {
    display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
    background: #fff; padding: 14px 18px;
    border-radius: 10px; box-shadow: 0 1px 4px rgba(0,0,0,.06);
    margin-bottom: 14px;
}
.controls label {
    font-weight: 600; font-size: .88rem;
    display: flex; align-items: center; gap: 6px;
}
.controls select {
    padding: 6px 10px; border-radius: 6px;
    border: 1px solid var(--gray-200); font-size: .88rem; background: #fff;
}
button {
    padding: 8px 16px; border: none; border-radius: 6px;
    font-size: .88rem; font-weight: 600; cursor: pointer;
    background: var(--gray-200); color: var(--gray-800);
    transition: .15s;
}
button:hover { filter: brightness(.95); transform: translateY(-1px); }
button:disabled { opacity: .35; cursor: not-allowed; transform: none; }
button.primary { background: var(--primary); color: #fff; }
button.primary:hover { background: var(--primary-dark); }
.status { margin-left: auto; font-size: .85rem; color: var(--gray-600); font-weight: 500; }

/* PANEL HASIL */
.panel-hasil {
    background: #fff; border-radius: 10px; padding: 18px 22px;
    box-shadow: 0 1px 4px rgba(0,0,0,.06); margin-bottom: 14px;
    border-left: 5px solid var(--success);
}
.panel-hasil h2 {
    font-size: 1.05rem; color: var(--primary-dark);
    margin-bottom: 12px;
}
.day-group { margin-bottom: 16px; }
.day-group h3 {
    font-size: .9rem; color: var(--gray-600);
    margin-bottom: 8px; display: flex; align-items: center; gap: 8px;
}
.kode-hari { font-size: .75rem; color: var(--gray-400); font-weight: 500; }

.pasangan-list { display: flex; flex-direction: column; gap: 8px; }
.pasangan-card {
    background: var(--primary-light); border-radius: 8px;
    padding: 10px 14px;
    display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
    border: 1px solid #c7d2fe;
}
.ps-kode {
    font-weight: 700; color: var(--primary-dark);
    font-size: 1rem; min-width: 50px;
}
.ps-slots { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.ps-slot {
    display: flex; align-items: center; gap: 5px;
    font-size: .82rem;
}
.ps-time { font-family: monospace; font-weight: 600; }
.ps-slotid { color: var(--gray-400); font-size: .72rem; }
.ps-type {
    font-size: .65rem; padding: 1px 5px; border-radius: 3px; font-weight: 600;
}
.ps-arrow { color: var(--gray-400); font-weight: 700; }
.ps-total { font-size: .78rem; color: var(--gray-600); margin-left: auto; }
.ps-pilih { padding: 6px 12px; font-size: .8rem; }

.hasil-final {
    text-align: center; padding: 12px;
    background: var(--success-bg); border-radius: 8px;
}
.hf-kode {
    font-size: 1.6rem; font-weight: 700;
    color: var(--success); margin-bottom: 4px;
}
.hf-day { color: var(--gray-600); font-size: .9rem; margin-bottom: 10px; }
.hf-detail {
    display: flex; justify-content: center; gap: 8px;
    align-items: center; font-family: monospace;
    font-size: .85rem; margin-bottom: 6px; flex-wrap: wrap;
}
.hf-detail .arrow { color: var(--gray-400); }
.hf-total { font-size: .85rem; color: var(--gray-600); margin-bottom: 12px; }

/* LEGEND */
.legend {
    display: flex; flex-wrap: wrap; gap: 18px; align-items: center;
    font-size: .82rem; margin-bottom: 10px; color: var(--gray-600);
}
.legend .box {
    display: inline-block; width: 16px; height: 16px;
    border-radius: 4px; margin-right: 6px; vertical-align: middle;
    border: 1px solid var(--gray-200);
}
.legend .free { background: var(--success-bg); border-color: var(--success-border); }
.legend .terpilih { background: var(--primary); border-color: var(--primary-dark); }
.legend .hint { margin-left: auto; color: var(--gray-400); font-style: italic; font-size: .78rem; }

/* TABLE */
.table-wrap {
    overflow: auto; background: #fff; border-radius: 10px;
    box-shadow: 0 1px 4px rgba(0,0,0,.06); max-height: 78vh;
}
table {
    border-collapse: separate; border-spacing: 0;
    width: 100%; font-size: .8rem; min-width: 1200px;
}
th, td {
    border-right: 1px solid var(--gray-200);
    border-bottom: 1px solid var(--gray-200);
    padding: 4px 6px; text-align: center; white-space: nowrap;
}
th { background: #f9fafb; font-weight: 600; color: var(--gray-800); }
thead tr:first-child th { position: sticky; top: 0; z-index: 3; }
thead tr:last-child th { position: sticky; top: 30px; z-index: 2; }
thead tr:only-child th { top: 0; z-index: 3; }

.week-header {
    background: linear-gradient(180deg, #eef2ff, #e0e7ff);
    color: var(--primary-dark); font-size: .78rem;
    font-weight: 700; letter-spacing: .3px;
}
.day-header {
    font-size: .72rem; font-weight: 600; color: var(--gray-600);
    min-width: 68px; background: linear-gradient(180deg, #f9fafb, #f3f4f6);
}

tbody td { height: 36px; vertical-align: middle; }
td.slot-id {
    font-weight: 700; color: var(--primary-dark);
    background: #fafaff; font-size: .85rem;
}
td.slot-time-cell {
    font-family: monospace; font-size: .76rem; background: #fafaff;
}
td.slot-dur { font-size: .75rem; color: var(--gray-600); background: #fafaff; }
td.type-teori { color: #0369a1; font-weight: 600; background: #f0f9ff; }
td.type-praktikum { color: #b45309; font-weight: 600; background: #fffbeb; }

/* DAY CELLS */
.day-cell {
    cursor: pointer; transition: .12s; user-select: none;
    font-size: .7rem; font-weight: 600;
}
.day-cell.free { background: var(--success-bg); color: #166534; }
.day-cell.free:hover { background: #bbf7d0; transform: scale(1.05); }
.day-cell.kosong { background: #f9fafb; color: #cbd5e1; }
.day-cell.kosong:hover { background: #f3f4f6; }
.day-cell.terpilih {
    background: var(--primary); color: #fff;
    outline: 3px solid #fbbf24; outline-offset: -3px;
}
.day-cell.terpilih:hover { background: var(--primary-dark); }

/* MODAL */
.modal {
    position: fixed; inset: 0; background: rgba(0,0,0,.5);
    display: none; align-items: center; justify-content: center; z-index: 100;
}
.modal.show { display: flex; }
.modal-box {
    background: #fff; padding: 24px; border-radius: 12px;
    width: min(480px, 92vw); box-shadow: 0 20px 60px rgba(0,0,0,.2);
}
.modal-box h2 { font-size: 1.15rem; margin-bottom: 16px; color: var(--primary-dark); }
.modal-box label {
    display: block; margin-bottom: 12px;
    font-size: .85rem; font-weight: 600; color: var(--gray-600);
}
.modal-box input {
    width: 100%; margin-top: 4px; padding: 8px 10px;
    border: 1px solid var(--gray-200); border-radius: 6px; font-size: .9rem;
}
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 16px; }

footer { text-align: center; color: var(--gray-400); margin-top: 24px; font-size: .78rem; }

/* RESPONSIVE */
@media (max-width: 760px) {
    .controls { gap: 8px; }
    #mingguSelect { min-width: 150px; font-size: .82rem; }
    .pasangan-card { flex-direction: column; align-items: flex-start; }
    .ps-total { margin-left: 0; }
}