/* =====================================================================
 * style.css – Smart Timetable V2
 * Phong cách: Microsoft 365 / Fluent + Glassmorphism + Material Design 3
 * ===================================================================== */

/* ---------- Biến màu (sáng) ---------- */
:root, [data-bs-theme="light"] {
  --primary: #2563EB;
  --secondary: #0EA5E9;
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;
  --bg: #eef3fb;
  --glass-bg: rgba(255, 255, 255, .72);
  --glass-border: rgba(255, 255, 255, .85);
  --surface-2: rgba(37, 99, 235, .06);
  --text: #0f172a;
  --text-muted: #64748b;
  --border: rgba(100, 116, 139, .22);
  --shadow: 0 8px 28px rgba(30, 64, 175, .10), 0 2px 6px rgba(15, 23, 42, .05);
  --radius: 16px;
  --sidebar-w: 264px;
  --bs-body-bg: transparent;
  --bs-body-color: var(--text);
  --bs-primary: #2563EB; --bs-primary-rgb: 37, 99, 235;
  --bs-link-color: #2563EB; --bs-link-hover-color: #1d4ed8;
  --bs-border-color: var(--border);
}
[data-bs-theme="dark"] {
  --bg: #0b1220;
  --glass-bg: rgba(17, 25, 40, .68);
  --glass-border: rgba(148, 163, 184, .16);
  --surface-2: rgba(96, 165, 250, .08);
  --text: #e5e7eb;
  --text-muted: #94a3b8;
  --border: rgba(148, 163, 184, .22);
  --shadow: 0 8px 28px rgba(0, 0, 0, .35);
  --bs-link-color: #60a5fa; --bs-link-hover-color: #93c5fd;
  color-scheme: dark;
}

/* ---------- Nền & chữ ---------- */
html { scroll-behavior: smooth; }
body {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(900px 520px at 8% -8%, rgba(37, 99, 235, .20), transparent 60%),
    radial-gradient(800px 520px at 100% 0%, rgba(14, 165, 233, .18), transparent 60%),
    radial-gradient(700px 500px at 50% 110%, rgba(16, 185, 129, .12), transparent 60%),
    var(--bg);
  background-attachment: fixed;
  min-height: 100vh;
}
.btn-primary {
  --bs-btn-bg: var(--primary); --bs-btn-border-color: var(--primary);
  --bs-btn-hover-bg: #1d4ed8; --bs-btn-hover-border-color: #1d4ed8;
  --bs-btn-active-bg: #1e40af; --bs-btn-active-border-color: #1e40af;
  --bs-btn-disabled-bg: var(--primary); --bs-btn-disabled-border-color: var(--primary);
}
.btn-outline-primary { --bs-btn-color: var(--primary); --bs-btn-border-color: var(--primary); --bs-btn-hover-bg: var(--primary); --bs-btn-hover-border-color: var(--primary); }
.btn-light { --bs-btn-bg: rgba(148, 163, 184, .14); --bs-btn-border-color: transparent; --bs-btn-color: var(--text); --bs-btn-hover-bg: rgba(148, 163, 184, .28); --bs-btn-hover-color: var(--text); }
.form-control, .form-select { background-color: var(--glass-bg); border-color: var(--border); color: var(--text); }
.form-control:focus, .form-select:focus { border-color: var(--primary); box-shadow: 0 0 0 .2rem rgba(37, 99, 235, .18); background-color: var(--glass-bg); color: var(--text); }
.text-muted { color: var(--text-muted) !important; }
.table { --bs-table-bg: transparent; --bs-table-color: var(--text); --bs-table-border-color: var(--border); }

/* ---------- Glass ---------- */
.glass {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(18px) saturate(165%);
  backdrop-filter: blur(18px) saturate(165%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card-pad { padding: 18px 20px; }
.card-title-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.card-title-row h6 { margin: 0; font-weight: 700; }

/* ---------- Bố cục ---------- */
.sidebar {
  position: fixed; inset: 0 auto 0 0; width: var(--sidebar-w); z-index: 1040; padding: 18px 14px;
  display: flex; flex-direction: column; gap: 14px;
  background: var(--glass-bg); -webkit-backdrop-filter: blur(22px) saturate(170%); backdrop-filter: blur(22px) saturate(170%);
  border-right: 1px solid var(--glass-border);
  transition: transform .25s ease;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); padding: 4px 8px 10px; }
.brand b { display: block; font-size: 1.05rem; line-height: 1.1; }
.brand small { color: var(--text-muted); }
.sidebar .nav-link {
  display: flex; align-items: center; gap: 12px; color: var(--text); padding: 10px 14px; border-radius: 12px; font-weight: 500;
  transition: background .15s, color .15s, transform .15s;
}
.sidebar .nav-link i { font-size: 1.15rem; color: var(--text-muted); }
.sidebar .nav-link:hover { background: var(--surface-2); }
.sidebar .nav-link.active { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #fff; box-shadow: 0 6px 16px rgba(37, 99, 235, .35); }
.sidebar .nav-link.active i { color: #fff; }
.sidebar-foot { margin-top: auto; color: var(--text-muted); font-size: .78rem; }
.backdrop { position: fixed; inset: 0; background: rgba(2, 6, 23, .45); z-index: 1035; }

.main { margin-left: var(--sidebar-w); min-height: 100vh; display: flex; flex-direction: column; }
.topbar {
  position: sticky; top: 0; z-index: 1030; padding: 10px 22px 8px;
  background: var(--glass-bg); -webkit-backdrop-filter: blur(20px) saturate(170%); backdrop-filter: blur(20px) saturate(170%);
  border-bottom: 1px solid var(--glass-border);
}
.topbar-row { display: flex; align-items: center; gap: 14px; }
.school { display: flex; align-items: center; gap: 10px; min-width: 0; }
.school-name { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.school-name span { font-weight: 700; font-size: 1.02rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.school-name small { color: var(--text-muted); font-size: .72rem; }
.gsearch { position: relative; flex: 1; max-width: 560px; margin-left: auto; }
.gsearch > i { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); color: var(--text-muted); pointer-events: none; }
.gsearch input { padding-left: 38px; border-radius: 999px; height: 42px; }
.top-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn { width: 40px; height: 40px; border-radius: 12px; display: inline-grid; place-items: center; padding: 0; font-size: 1.15rem; }
.topbar-info { display: flex; gap: 8px; margin-top: 8px; overflow-x: auto; padding-bottom: 2px; scrollbar-width: none; }
.topbar-info::-webkit-scrollbar { display: none; }
.info-chip {
  display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; font-size: .85rem; padding: 5px 12px; border-radius: 999px;
  background: var(--surface-2); border: 1px solid var(--border);
}
.info-chip i { color: var(--primary); }
.info-chip small { color: var(--text-muted); }
.info-chip.clock { margin-left: auto; font-variant-numeric: tabular-nums; }
.info-chip.chip-warn { border-color: var(--warning); color: var(--warning); }
.period-chip.live { background: rgba(16, 185, 129, .14); border-color: rgba(16, 185, 129, .5); }
.period-chip.live i { color: var(--success); animation: ring 1.4s ease-in-out infinite; }
.content { padding: 22px; max-width: 1640px; width: 100%; margin: 0 auto; outline: none; animation: fadeUp .28s ease; }

.page-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 14px; flex-wrap: wrap; margin-bottom: 18px; }
.page-head h2 { font-size: 1.55rem; font-weight: 800; margin: 0; display: flex; align-items: center; gap: 10px; }
.page-head h2 i { color: var(--primary); }

/* ---------- Thẻ thống kê ---------- */
.stat-card { display: flex; align-items: center; gap: 14px; padding: 16px 18px; height: 100%; transition: transform .15s; }
.stat-card:hover { transform: translateY(-2px); }
.stat-ic { width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; font-size: 1.4rem; flex: none; }
.bg-primary-soft { background: rgba(37, 99, 235, .14); color: var(--primary); }
.bg-info-soft { background: rgba(14, 165, 233, .14); color: var(--secondary); }
.bg-success-soft { background: rgba(16, 185, 129, .14); color: var(--success); }
.bg-warning-soft { background: rgba(245, 158, 11, .16); color: var(--warning); }
.bg-danger-soft { background: rgba(239, 68, 68, .14); color: var(--danger); }
.stat-v { font-size: 1.7rem; font-weight: 800; line-height: 1.05; font-variant-numeric: tabular-nums; }
.stat-l { color: var(--text-muted); font-size: .82rem; }
.chart-box { position: relative; width: 100%; }
.live-status { font-size: 1.5rem; font-weight: 800; margin-bottom: 2px; }
.live-status.in { color: var(--success); }
.live-status.break { color: var(--warning); }
.live-numbers { display: flex; gap: 22px; }
.live-numbers b { display: block; font-size: 1.8rem; line-height: 1; }
.live-numbers span { color: var(--text-muted); font-size: .8rem; }
.note-list { margin: 0; padding-left: 18px; color: var(--text); font-size: .92rem; }
.note-list li { margin-bottom: 6px; }

/* ---------- Chip ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border-radius: 999px; font-size: .85rem; text-decoration: none; cursor: pointer;
  background: var(--surface-2); border: 1px solid var(--border); color: var(--text); transition: all .15s;
}
.chip:hover { border-color: var(--primary); color: var(--primary); }
.chip.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.chip b { font-weight: 700; }
.subj-chip {
  --c: var(--primary);
  display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: 999px; font-size: .8rem; font-weight: 600; text-decoration: none;
  background: color-mix(in srgb, var(--c) 16%, transparent);
  color: color-mix(in srgb, var(--c) 72%, var(--text));
  border: 1px solid color-mix(in srgb, var(--c) 38%, transparent);
}

/* ---------- Thông tin đối tượng ---------- */
.entity-head { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.avatar {
  width: 64px; height: 64px; border-radius: 20px; display: grid; place-items: center; font-weight: 800; font-size: 1.3rem; color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--secondary)); box-shadow: 0 8px 18px rgba(37, 99, 235, .35);
}
.avatar.alt { background: linear-gradient(135deg, var(--success), var(--secondary)); font-size: 1.05rem; }
.entity-stats { display: flex; gap: 12px; flex-wrap: wrap; }
.entity-stats > div { background: var(--surface-2); border: 1px solid var(--border); border-radius: 14px; padding: 8px 18px; text-align: center; min-width: 108px; }
.entity-stats b { display: block; font-size: 1.5rem; line-height: 1.1; color: var(--primary); }
.entity-stats span { font-size: .75rem; color: var(--text-muted); }

/* ---------- Bảng thời khóa biểu ---------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.tt-table { width: 100%; min-width: 640px; border-collapse: separate; border-spacing: 5px; table-layout: fixed; }
.tt-table th, .tt-table td { vertical-align: top; }
.tt-table thead th {
  text-align: center; padding: 10px 6px; font-weight: 700; font-size: .88rem; border-radius: 10px;
  background: var(--surface-2); border: 1px solid var(--border);
}
.tt-table thead th.today-col { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #fff; border-color: transparent; }
.tt-table .corner { width: 76px; }
.tt-table td { padding: 4px; min-height: 66px; height: 66px; border-radius: 10px; background: rgba(148, 163, 184, .06); border: 1px dashed var(--border); }
.tt-table td.today-col { background: rgba(37, 99, 235, .05); }
.tt-table .period-h { text-align: center; font-weight: 500; padding: 6px 4px; border-radius: 10px; background: var(--surface-2); border: 1px solid var(--border); vertical-align: middle; }
.tt-table .period-h small { display: block; color: var(--text-muted); font-size: .7rem; }
.tt-table td.now { background: rgba(37, 99, 235, .14); border: 2px solid var(--primary); animation: pulse 2s ease-in-out infinite; }
.lesson {
  --c: var(--primary);
  padding: 6px 8px; border-radius: 8px; margin-bottom: 4px; line-height: 1.25; font-size: .84rem;
  border-left: 4px solid var(--c);
  background: color-mix(in srgb, var(--c) 15%, transparent);
}
.lesson:last-child { margin-bottom: 0; }
.lesson b { display: block; font-weight: 700; }
.lesson span { display: block; color: var(--text); opacity: .85; font-size: .78rem; }
.lesson small { display: block; color: var(--text-muted); font-size: .72rem; }
.lesson.clash { outline: 2px solid var(--danger); }
.lesson.event { text-align: center; font-style: italic; }
.lesson.event span { opacity: 1; }

/* ---------- Lịch hôm nay ---------- */
.today-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.today-item {
  --c: var(--primary); display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: 12px;
  background: color-mix(in srgb, var(--c) 10%, transparent); border: 1px solid var(--border); border-left: 4px solid var(--c);
}
.today-item.cur { box-shadow: 0 0 0 2px var(--success); background: rgba(16, 185, 129, .12); }
.today-item.nxt { box-shadow: 0 0 0 2px var(--primary); }
.today-item.past { opacity: .55; }
.ti-p { font-weight: 800; min-width: 52px; color: var(--c); }
.ti-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.ti-body small { color: var(--text-muted); }

/* ---------- Combobox ---------- */
.cbx { position: relative; width: 340px; max-width: 100%; }
.cbx-ic { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); color: var(--text-muted); pointer-events: none; z-index: 2; }
.cbx-input { padding-left: 38px; padding-right: 36px; height: 42px; border-radius: 12px; font-weight: 600; }
.cbx-clear { position: absolute; right: 4px; top: 50%; transform: translateY(-50%); color: var(--text-muted); z-index: 2; }
.cbx-list {
  position: absolute; top: calc(100% + 6px); left: 0; right: 0; z-index: 1050; max-height: 340px; overflow: auto; padding: 6px;
  background: var(--bs-body-bg, #fff); background-color: color-mix(in srgb, var(--bg) 92%, var(--primary) 4%);
}
.cbx-item { display: flex; justify-content: space-between; gap: 10px; align-items: baseline; padding: 8px 12px; border-radius: 10px; cursor: pointer; }
.cbx-item small { color: var(--text-muted); white-space: nowrap; }
.cbx-item:hover, .cbx-item.hl { background: var(--surface-2); }
.cbx-item.sel { background: rgba(37, 99, 235, .16); font-weight: 600; }
.cbx-empty { padding: 14px; text-align: center; color: var(--text-muted); }

/* ---------- Tìm kiếm toàn cục ---------- */
.search-panel {
  position: absolute; top: calc(100% + 8px); left: 0; right: 0; max-height: 70vh; overflow: auto; padding: 8px; z-index: 1060;
  border-radius: 16px; border: 1px solid var(--glass-border); box-shadow: var(--shadow);
  background-color: color-mix(in srgb, var(--bg) 94%, var(--primary) 4%);
}
.sr-group { padding: 8px 10px 4px; font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--text-muted); }
.sr-item { display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 10px; color: var(--text); text-decoration: none; }
.sr-item i { color: var(--primary); width: 20px; text-align: center; }
.sr-item small { margin-left: auto; color: var(--text-muted); white-space: nowrap; }
.sr-item:hover, .sr-item.active { background: var(--surface-2); }
.sr-empty { padding: 16px; text-align: center; color: var(--text-muted); }

/* ---------- Bảng phụ ---------- */
.room-free { opacity: .72; }
.live-dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; background: var(--success); animation: ring 1.4s infinite; }
.issue-table td, .issue-table th { font-size: .9rem; }
.glass-alert { background: var(--glass-bg); border: 1px solid var(--border); color: var(--text); border-radius: 14px; }

/* ---------- Buổi / chú thích ---------- */
.session-toggle .chip { padding: 3px 12px; }
.legend { font-size: .76rem; color: var(--text-muted); margin: 8px 2px 0; }
.card-title-row .session-toggle { margin-left: auto; }

/* ---------- Gán tên giáo viên ---------- */
.alias-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; align-items: center; padding: 6px 0; border-bottom: 1px dashed var(--border); }
@media (max-width: 575.98px) { .alias-row { grid-template-columns: 1fr; } }

/* ---------- Quản trị ---------- */
.admin-bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; }

/* ---------- Trạng thái trống / chào mừng / kéo thả ---------- */
.empty-state { text-align: center; padding: 44px 20px; }
.empty-state > i { font-size: 3rem; color: var(--text-muted); }
.welcome { max-width: 720px; margin: 40px auto; text-align: center; padding: 36px 28px; }
.drop-zone { border: 2px dashed var(--border); border-radius: 16px; padding: 24px; text-align: center; transition: all .15s; margin-bottom: 14px; }
.drop-zone > i { font-size: 2.4rem; color: var(--primary); }
.drop-zone.over { border-color: var(--primary); background: rgba(37, 99, 235, .08); }
.src-row { display: flex; gap: 12px; align-items: center; padding: 8px 0; }
.src-row i { font-size: 1.2rem; color: var(--text-muted); }
.src-row.ok i { color: var(--success); }
.busy { position: fixed; inset: 0; z-index: 2000; display: flex; gap: 14px; align-items: center; justify-content: center; background: rgba(2, 6, 23, .45); color: #fff; font-weight: 600; backdrop-filter: blur(4px); }
.qr-box { display: inline-grid; place-items: center; padding: 14px; background: #fff; border-radius: 14px; min-height: 120px; }
.qr-box img, .qr-box canvas { max-width: 100%; height: auto; }

/* ---------- Khối xuất / in ---------- */
.export-head { display: none; justify-content: space-between; align-items: flex-end; gap: 12px; padding-bottom: 10px; margin-bottom: 12px; border-bottom: 3px solid #2563EB; }
.export-head h3 { margin: 0; font-size: 1.25rem; font-weight: 800; }
.export-head .eh-school { text-transform: uppercase; font-size: .75rem; letter-spacing: .08em; color: #64748b; font-weight: 700; }
.export-head .eh-sub { color: #475569; font-size: .85rem; text-align: right; }
.export-holder { position: fixed; left: -12000px; top: 0; z-index: -1; pointer-events: none; }
.export-sheet { background: #fff; color: #0f172a; padding: 18px; }
.export-sheet .export-head, #printRoot .export-head { display: flex; }
.export-sheet .tt-table td.now { animation: none; border: 1px dashed var(--border); background: rgba(148, 163, 184, .06); }
.export-sheet .tt-table .period-h, .export-sheet .tt-table thead th { background: #eef2ff; }
.export-sheet .tt-table thead th.today-col { background: #eef2ff; color: #0f172a; border-color: var(--border); }
.export-sheet .tt-table td.today-col { background: rgba(148, 163, 184, .06); }
#printRoot { display: none; }

/* ---------- Animation ---------- */
@keyframes fadeUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(37, 99, 235, .35); } 50% { box-shadow: 0 0 0 6px rgba(37, 99, 235, 0); } }
@keyframes ring { 0%, 100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.25); opacity: .6; } }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }

/* ---------- Responsive ---------- */
@media (max-width: 991.98px) {
  .sidebar { transform: translateX(-102%); width: 280px; box-shadow: var(--shadow); }
  .sidebar.open { transform: none; }
  .main { margin-left: 0; }
  .topbar { padding: 8px 12px 6px; }
  .content { padding: 14px 12px 40px; }
  .school-name small { display: none; }
  .gsearch { max-width: none; }
}
@media (max-width: 767.98px) {
  .school-name { display: none; }
  .page-head h2 { font-size: 1.25rem; }
  .cbx { width: 100%; }
  .page-head .actions { width: 100%; }
  .page-head .actions .cbx-host { flex: 1; }
  .tt-table { min-width: 680px; border-spacing: 3px; }
  .tt-table .corner, .tt-table .period-h { width: 64px; }
  .tt-table .period-h { position: sticky; left: 0; z-index: 2; background: var(--bg); }
  .lesson { font-size: .78rem; padding: 4px 6px; }
  .entity-stats > div { min-width: 92px; padding: 6px 12px; }
  .info-chip.clock { margin-left: 0; }
}

/* ---------- In ấn ---------- */
@media print {
  @page { size: A4 landscape; margin: 10mm; }
  html, body { background: #fff !important; }
  body > *:not(#printRoot) { display: none !important; }
  #printRoot { display: block !important; position: static; color: #000; background: #fff; }
  #printRoot * { -webkit-print-color-adjust: exact; print-color-adjust: exact; animation: none !important; }
  #printRoot .tt-table { min-width: 0; font-size: 11px; }
  #printRoot .tt-table td.now { border: 1px dashed #cbd5e1; background: transparent; }
  #printRoot .tt-table td { height: auto; }
  #printRoot .table-wrap { overflow: visible; }
  .tt-table tr { break-inside: avoid; }
}

#weekPick{width:auto;max-width:240px;border-radius:999px;font-weight:600}