/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
    --sv: #0ea5e9; --sv-dark: #0284c7; --sv-light: #e0f2fe; --sv-glow: rgba(14,165,233,.25);
    --gv: #2563eb; --gv-dark: #1d4ed8; --gv-light: #dbeafe; --gv-glow: rgba(37,99,235,.25);
    --kegc: #2563eb; --kegc-dark: #1d4ed8; --kegc-light: #dbeafe; --kegc-glow: rgba(37,99,235,.25);
    --kepc: #2563eb; --kepc-dark: #1d4ed8; --kepc-light: #dbeafe; --kepc-glow: rgba(37,99,235,.25);
    --bg: #f0f4f8; --surface: #ffffff; --border: #e2e8f0;
    --text: #0f172a; --text-2: #475569; --text-3: #94a3b8;
    --radius: 14px; --radius-sm: 8px;
    --shadow: 0 4px 24px rgba(0,0,0,.08); --shadow-lg: 0 12px 48px rgba(0,0,0,.14);
    --morning: #fef9c3; --afternoon: #dbeafe; --evening: #fce7f3;
    --morning-b: #ca8a04; --afternoon-b: #2563eb; --evening-b: #db2777;
}
html { font-family: 'Inter', system-ui, sans-serif; font-size: 15px; }
body { background: var(--bg); color: var(--text); min-height: 100vh; }

/* ===== HEADER ===== */
.site-header { background: linear-gradient(135deg, #0f172a 0%, #1e293b 60%, #0c4a6e 100%); padding: 0 24px; box-shadow: 0 2px 16px rgba(0,0,0,.3); position: sticky; top: 0; z-index: 100; }
.header-inner { max-width: 1400px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.header-brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { width: 40px; height: 40px; background: linear-gradient(135deg, var(--sv), #6366f1); border-radius: 10px; display: flex; align-items: center; justify-content: center; box-shadow: 0 0 0 2px rgba(255,255,255,.15); }
.brand-logo svg { width: 22px; height: 22px; stroke: white; }
.brand-name { font-size: 1.05rem; font-weight: 900; color: white; letter-spacing: -.3px; line-height: 1.2; }
.brand-sub { font-size: .72rem; color: #94a3b8; font-weight: 500; display: block; }
.header-actions { display: flex; align-items: center; gap: 12px; }

/* ===== HEADER AUTH ===== */
.header-auth { display: flex; align-items: center; gap: 8px; }
.auth-user-name { font-size: .75rem; font-weight: 700; color: #7dd3fc; white-space: nowrap; max-width: 260px; overflow: hidden; text-overflow: ellipsis; }
.header-login-btn { display: flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: var(--radius-sm); border: 1px solid rgba(255,255,255,.2); background: rgba(255,255,255,.1); color: white; font-size: .78rem; font-weight: 700; cursor: pointer; transition: all .2s; white-space: nowrap; }
.header-login-btn:hover { background: rgba(255,255,255,.22); border-color: rgba(255,255,255,.35); }
.header-logout-btn { display: flex; align-items: center; justify-content: center; width: 34px; height: 34px; border-radius: var(--radius-sm); border: 1px solid rgba(239,68,68,.4); background: rgba(239,68,68,.12); color: #fca5a5; font-size: .88rem; cursor: pointer; transition: all .2s; }
.header-logout-btn:hover { background: rgba(239,68,68,.28); color: #fee2e2; }
.yr-label { font-size: .7rem; font-weight: 700; color: #94a3b8; text-transform: uppercase; letter-spacing: .06em; margin-right: 4px; }
.yr-select { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.15); color: white; border-radius: var(--radius-sm); padding: 6px 10px; font-size: .82rem; font-weight: 700; cursor: pointer; outline: none; }
.yr-select:focus { border-color: var(--sv); }
/* Năm học mặc định đọc từ cấu hình admin — hiển thị tĩnh, không cho chọn */
.yr-static { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.15); color: white; border-radius: var(--radius-sm); padding: 6px 12px; font-size: .82rem; font-weight: 700; white-space: nowrap; }
.current-week-badge { display: flex; align-items: center; gap: 6px; background: rgba(14,165,233,.2); border: 1px solid rgba(14,165,233,.4); color: #7dd3fc; border-radius: 20px; padding: 5px 12px; font-size: .8rem; font-weight: 600; }
.current-week-badge strong { color: #38bdf8; }

/* ===== TAB BAR ===== */
.tab-bar { background: var(--surface); border-bottom: 2px solid var(--border); position: sticky; top: 64px; z-index: 90; }
.tab-bar-inner { max-width: 1400px; margin: 0 auto; display: flex; padding: 0 24px; }
.tab-btn { display: flex; align-items: center; gap: 8px; padding: 14px 24px; font-size: .9rem; font-weight: 700; color: var(--text-3); border: none; background: none; cursor: pointer; position: relative; transition: color .2s; border-bottom: 3px solid transparent; margin-bottom: -2px; }
.tab-btn i { font-size: 1rem; }
.tab-btn:hover { color: var(--text-2); }
.tab-btn.active[id="tab-sv"] { color: var(--sv-dark); border-bottom-color: var(--sv); }
.tab-btn.active[id="tab-gv"] { color: var(--gv-dark); border-bottom-color: var(--gv); }
.tab-btn.active[id="tab-kegc"] { color: var(--kegc-dark); border-bottom-color: var(--kegc); }
.tab-btn.active[id="tab-kepc"] { color: var(--kepc-dark); border-bottom-color: var(--kepc); }

/* ===== MAIN ===== */
.main { max-width: 1400px; margin: 0 auto; padding: 24px; }
.panel { display: none; }
.panel.active { display: block; animation: fadeIn .3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

/* ===== FILTER CARD ===== */
.filter-card { background: var(--surface); border-radius: var(--radius); padding: 20px 24px; margin-bottom: 20px; box-shadow: var(--shadow); border: 1px solid var(--border); }
.filter-card.sv-theme { border-top: 4px solid var(--sv); }
.filter-card.gv-theme { border-top: 4px solid var(--gv); }
.filter-title { display: flex; align-items: center; gap: 8px; font-size: .95rem; font-weight: 800; margin-bottom: 16px; color: var(--text); }
.sv-theme .filter-title i { color: var(--sv); }
.gv-theme .filter-title i { color: var(--gv); }
.filter-row { display: flex; align-items: flex-end; gap: 16px; flex-wrap: wrap; }
.filter-group { display: flex; flex-direction: column; gap: 6px; }
.filter-group label { font-size: .72rem; font-weight: 700; color: var(--text-2); text-transform: uppercase; letter-spacing: .07em; display: flex; align-items: center; gap: 6px; }
.label-sub { font-size: .68rem; color: var(--text-3); font-weight: 500; text-transform: none; letter-spacing: 0; white-space: nowrap; }

/* ===== SEGMENTED CONTROL ===== */
.seg-ctrl { display: flex; background: var(--bg); border-radius: 10px; padding: 3px; gap: 2px; border: 1px solid var(--border); }
.seg-btn { padding: 7px 14px; border-radius: 8px; border: none; background: none; font-size: .78rem; font-weight: 700; color: var(--text-3); cursor: pointer; transition: all .2s; display: flex; align-items: center; gap: 5px; white-space: nowrap; }
.seg-btn.active { background: var(--surface); color: var(--text); box-shadow: 0 1px 6px rgba(0,0,0,.1); }
.sv-theme .seg-btn.active { color: var(--sv-dark); }
.gv-theme .seg-btn.active { color: var(--gv-dark); }

/* ===== FORM INPUTS ===== */
.form-input { height: 40px; border: 1.5px solid var(--border); border-radius: var(--radius-sm); padding: 0 12px; font-size: .85rem; font-weight: 600; color: var(--text); outline: none; transition: border-color .2s, box-shadow .2s; background: white; min-width: 140px; font-family: inherit; }
.form-input:focus { border-color: var(--sv); box-shadow: 0 0 0 3px var(--sv-glow); }
.gv-theme .form-input:focus { border-color: var(--gv); box-shadow: 0 0 0 3px var(--gv-glow); }
.form-input.with-icon { padding-left: 34px; width: 240px; }
/* Ô nhập tên giảng viên rộng hơn để hiển thị đủ họ tên dài */
#gv-search.form-input.with-icon { width: 340px; }
.week-ctrl { display: flex; align-items: center; gap: 6px; }
.week-btn { width: 34px; height: 34px; border-radius: var(--radius-sm); border: 1.5px solid var(--border); background: var(--surface); color: var(--text-2); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: .8rem; transition: all .15s; }
.week-btn:hover { border-color: var(--sv); color: var(--sv); }
.week-input { width: 68px; height: 40px; border: 1.5px solid var(--border); border-radius: var(--radius-sm); text-align: center; font-size: 1rem; font-weight: 800; outline: none; font-family: inherit; }
.week-input:focus { border-color: var(--sv); box-shadow: 0 0 0 3px var(--sv-glow); }
.week-date-range { font-size: .72rem; color: var(--text-3); font-weight: 500; margin-top: 2px; }
.class-select-wrap { display: flex; gap: 8px; }
.class-name-select { width: clamp(280px, 30vw, 460px); max-width: 100%; }
.hidden { display: none !important; }

/* ===== AUTOCOMPLETE ===== */
.autocomplete-wrap { position: relative; }
.autocomplete-input-wrap { position: relative; }
.autocomplete-icon { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); color: var(--gv); font-size: .8rem; pointer-events: none; }
.dropdown { position: absolute; top: calc(100% + 4px); left: 0; width: 100%; background: white; border: 1.5px solid var(--border); border-radius: var(--radius-sm); box-shadow: var(--shadow-lg); z-index: 200; max-height: 220px; overflow-y: auto; }
.dropdown-item { padding: 9px 14px; cursor: pointer; font-size: .85rem; font-weight: 600; color: var(--text); transition: background .15s; border-bottom: 1px solid var(--bg); }
.dropdown-item:last-child { border-bottom: none; }
.dropdown-item:hover, .dropdown-item.selected { background: var(--gv-light); color: var(--gv-dark); }
.dropdown-item .item-sub { font-size: .72rem; color: var(--text-3); font-weight: 400; }

/* ===== SEARCH BUTTON ===== */
.filter-action { display: flex; align-items: flex-end; }
.search-btn { display: flex; align-items: center; gap: 8px; height: 40px; padding: 0 22px; border-radius: var(--radius-sm); border: none; font-size: .88rem; font-weight: 800; cursor: pointer; transition: all .2s; letter-spacing: .02em; box-shadow: 0 2px 8px rgba(0,0,0,.15); }
.search-btn.sv { background: linear-gradient(135deg, var(--sv), var(--sv-dark)); color: white; }
.search-btn.sv:hover { transform: translateY(-1px); box-shadow: 0 4px 16px var(--sv-glow); }
.search-btn.gv { background: linear-gradient(135deg, var(--gv), var(--gv-dark)); color: white; }
.search-btn.gv:hover { transform: translateY(-1px); box-shadow: 0 4px 16px var(--gv-glow); }
.search-btn:active { transform: scale(.97); }

/* ===== RESULT AREA ===== */
.result-area { min-height: 300px; }
.empty-result { text-align: center; padding: 80px 20px; color: var(--text-3); }
.empty-icon { font-size: 3rem; margin-bottom: 12px; }
.empty-result h3 { font-size: 1.1rem; color: var(--text-2); margin-bottom: 6px; }
.empty-result p { font-size: .85rem; }

/* ===== RESULT HEADER ===== */
.result-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; flex-wrap: wrap; gap: 10px; }
.result-title { font-size: 1.05rem; font-weight: 800; color: var(--text); display: flex; align-items: center; gap: 8px; }
.result-subtitle { font-size: .8rem; color: var(--text-3); font-weight: 400; }
.result-tag { background: var(--sv-light); color: var(--sv-dark); border-radius: 20px; padding: 3px 10px; font-size: .75rem; font-weight: 700; }
.result-tag.gv { background: var(--gv-light); color: var(--gv-dark); }
.nav-arrows { display: flex; gap: 6px; }
.nav-arrows button { width: 32px; height: 32px; border-radius: var(--radius-sm); border: 1.5px solid var(--border); background: var(--surface); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: .8rem; color: var(--text-2); transition: all .15s; }
.nav-arrows button:hover { border-color: var(--sv); color: var(--sv); }
.export-btn { display: flex; align-items: center; gap: 6px; height: 34px; padding: 0 14px; border-radius: var(--radius-sm); border: 1.5px solid #0d9488; background: #f0fdfa; color: #0d9488; font-size: .78rem; font-weight: 700; cursor: pointer; transition: all .2s; white-space: nowrap; }
.export-btn:hover { background: #0d9488; color: white; }

/* ===== TIMETABLE ===== */
.tt-scroll { overflow-x: auto; border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border); background: white; }
.tt-table { width: 100%; border-collapse: collapse; min-width: 900px; font-size: .82rem; }
.tt-table th { background: #0d9488; color: #fff; padding: 11px 8px; text-align: center; font-weight: 700; font-size: .78rem; position: sticky; top: 0; border-bottom: 2px solid #0f766e; }
.tt-table th.shift-col { background: #0f766e; width: 90px; vertical-align: middle; border-right: 2px solid #115e59; }
.tt-info { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.tt-week-num { font-size: .82rem; font-weight: 800; }
.tt-class-id { font-size: .72rem; font-weight: 500; opacity: .85; word-break: break-all; }
.tt-table th .day-name { font-size: .83rem; font-weight: 800; }
.tt-table th .day-date { font-size: .72rem; font-weight: 500; opacity: .85; margin-top: 2px; }
.tt-table th.today-th { background: #1d4ed8 !important; border-bottom-color: #1e40af !important; }
.tt-table td { border: 1px solid #e5e7eb; vertical-align: top; padding: 5px; min-height: 80px; }
.tt-table td.shift-cell { background: #f0fdfa; font-size: .78rem; font-weight: 700; color: #0f766e; text-align: center; vertical-align: middle; padding: 8px 4px; border-right: 2px solid #ccfbf1; white-space: nowrap; }
.tt-table td.morning-cell { background: #ffffff; }
.tt-table td.afternoon-cell { background: #fafffe; }
.tt-table td.evening-cell { background: #fafafa; }
.tt-table td.today-col { background: #eff6ff !important; }

.session-card { background: #fff; border: 1px solid #e5e7eb; border-radius: 8px; padding: 7px 9px; margin-bottom: 5px; border-left: 3px solid; box-shadow: 0 1px 3px rgba(0,0,0,.06); transition: box-shadow .15s, transform .15s; }
.session-card:hover { box-shadow: 0 3px 10px rgba(0,0,0,.1); transform: translateY(-1px); }
.session-card.lt { border-left-color: #0ea5e9; }
.session-card.th { border-left-color: #16a34a; }
.session-card.tt { border-left-color: #db2777; }
.sc-subject { font-weight: 700; font-size: .78rem; color: #111827; line-height: 1.35; margin-bottom: 3px; }
.sc-teacher { font-size: .72rem; color: #0d9488; font-weight: 600; margin-bottom: 2px; }
.sc-time { font-size: .7rem; color: #6b7280; }
.sc-lop-tag { font-size: .68rem; color: var(--gv-dark); font-weight: 600; margin-top: 2px; }

/* ===== MONTH VIEW ===== */
.month-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; }
.month-day-header { text-align: center; font-size: .72rem; font-weight: 800; color: var(--text-2); text-transform: uppercase; letter-spacing: .06em; padding: 6px 0; }
.month-cell { background: white; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 6px; min-height: 100px; }
.month-cell.today { border-color: #22c55e; background: #f0fdf4; }
.month-cell.other-month { background: var(--bg); opacity: .55; }
.month-cell.has-sessions { border-color: var(--sv); }
.month-day-num { font-size: .78rem; font-weight: 800; color: var(--text-3); margin-bottom: 4px; display: flex; align-items: center; justify-content: space-between; }
.month-day-num.today-num { color: white; background: #22c55e; width: 22px; height: 22px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: .72rem; margin-bottom: 4px; }
.month-session-pill { font-size: .65rem; font-weight: 700; border-radius: 4px; padding: 2px 5px; margin-bottom: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; cursor: default; }
.month-session-pill.lt { background: var(--sv-light); color: var(--sv-dark); }
.month-session-pill.th { background: #dcfce7; color: #166534; }
.month-session-pill.tt { background: #fce7f3; color: #9d174d; }
.month-more { font-size: .65rem; color: var(--text-3); font-weight: 600; margin-top: 2px; }

/* ===== CLASS VIEW (list by class) ===== */
.class-section { background: white; border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 16px; overflow: hidden; box-shadow: var(--shadow); }
.class-section-header { display: flex; align-items: center; gap: 10px; padding: 12px 16px; background: linear-gradient(90deg, var(--sv-light), white); border-bottom: 1px solid var(--border); }
.class-section-title { font-weight: 800; font-size: .95rem; color: var(--sv-dark); }
.class-section-body { padding: 12px 16px; }

/* ===== LOADING ===== */
.loading-overlay { position: fixed; inset: 0; background: rgba(15,23,42,.55); backdrop-filter: blur(4px); z-index: 9999; display: flex; align-items: center; justify-content: center; }
.loading-overlay.hidden { display: none; }
.loading-box { background: white; border-radius: var(--radius); padding: 32px 40px; text-align: center; box-shadow: var(--shadow-lg); display: flex; flex-direction: column; align-items: center; gap: 14px; }
.spinner { width: 48px; height: 48px; border: 4px solid var(--border); border-top-color: var(--sv); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-box p { font-size: .9rem; font-weight: 600; color: var(--text-2); }

/* ===== TOAST ===== */
.toast-wrap { position: fixed; bottom: 24px; right: 24px; display: flex; flex-direction: column; gap: 8px; z-index: 9998; }
.toast { background: #1e293b; color: white; border-radius: var(--radius-sm); padding: 12px 18px; font-size: .85rem; font-weight: 600; box-shadow: var(--shadow-lg); animation: slideIn .3s ease; max-width: 320px; display: flex; align-items: center; gap: 8px; }
.toast.success { background: #166534; }
.toast.error { background: #991b1b; }
@keyframes slideIn { from { transform: translateX(120%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* Legend */
.tt-legend { display: flex; gap: 12px; align-items: center; margin-bottom: 10px; flex-wrap: wrap; }
.legend-item { display: flex; align-items: center; gap: 5px; font-size: .75rem; font-weight: 700; color: var(--text-2); }
.legend-dot { width: 10px; height: 10px; border-radius: 3px; flex-shrink: 0; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .main { padding: 12px; }
    .filter-row { flex-direction: column; align-items: stretch; }
    .filter-action { width: 100%; }
    .search-btn { width: 100%; justify-content: center; }
    .class-select-wrap { flex-direction: column; }
    .class-name-select { width: 100%; }
    .form-input.with-icon { width: 100%; }
    #gv-search.form-input.with-icon { width: 100%; }
    .tt-table { min-width: 700px; }
    .month-grid { gap: 4px; }
    .month-cell { min-height: 70px; }
    .header-inner { flex-wrap: wrap; height: auto; padding: 10px 0; gap: 8px; }
    .seg-ctrl { flex-wrap: wrap; }
}

/* ===== SESSION TYPE BADGES ===== */
.sc-badge { display: inline-block; font-size: .65rem; font-weight: 800; border-radius: 4px; padding: 2px 6px; letter-spacing: .04em; }
.sc-badge.lt { background: var(--sv-light); color: var(--sv-dark); }
.sc-badge.th { background: #dcfce7; color: #166534; }
.sc-badge.tt { background: #fce7f3; color: #9d174d; }

/* ===== GV DIVIDER inside filter card ===== */
.gv-divider {
    display: flex; align-items: center; gap: 10px;
    margin: 18px 0 14px;
    padding-top: 18px;
    border-top: 1.5px dashed var(--border);
    font-size: .82rem; font-weight: 800; color: var(--gv-dark);
}
.gv-divider i { color: var(--gv); }

/* ===== STAT DATE PANEL ===== */
.stat-date-panel {
    animation: fadeIn .25s ease;
    padding-top: 4px;
}
.stat-date-panel.hidden { display: none; }

/* ===== STATISTICS CARD ===== */
.stat-card {
    background: var(--surface); border-radius: var(--radius); padding: 20px 24px;
    margin-top: 24px; margin-bottom: 12px;
    box-shadow: var(--shadow); border: 1px solid var(--border);
    border-top: 4px solid var(--gv);
}
.stat-title { color: var(--gv-dark); }
.stat-title i { color: var(--gv); }
.stat-date-input { min-width: 160px; }
.stat-btn { background: linear-gradient(135deg, var(--gv), var(--gv-dark)); color: white; }
.stat-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 16px var(--gv-glow); }
.logout-btn { background: #fee2e2; color: #b91c1c; border: 1px solid #fecaca; }
.logout-btn:hover { background: #fecaca; transform: translateY(-1px); }

/* Auth badge */
.stat-auth-badge {
    margin-left: auto; font-size: .72rem; font-weight: 700;
    background: #fef3c7; color: #92400e; border: 1px solid #fcd34d;
    border-radius: 20px; padding: 3px 10px; display: flex; align-items: center; gap: 5px;
}
.stat-auth-badge.logged-in { background: #dcfce7; color: #166534; border-color: #86efac; }

/* ===== STATISTICS RESULT ===== */
.stat-result { margin-top: 0; }
.stat-subtab-bar {
    display: flex; align-items: center; gap: 6px;
    background: var(--surface); border-radius: var(--radius) var(--radius) 0 0;
    padding: 12px 16px; border: 1px solid var(--border); border-bottom: none;
    box-shadow: var(--shadow);
}
.stat-summary { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.stat-result-toolbar { gap: 14px; }
.stat-result-title {
    display: flex; align-items: center; gap: 8px;
    color: var(--gv-dark); font-size: .9rem; font-weight: 800;
}
.stat-sum-item {
    display: flex; align-items: center; gap: 5px; font-size: .8rem; font-weight: 700;
    background: var(--gv-light); color: var(--gv-dark); border-radius: 20px; padding: 4px 12px;
}
.stat-panel { display: none; background: var(--surface); border: 1px solid var(--border); border-radius: 0 0 var(--radius) var(--radius); padding: 16px; }
.stat-panel.active { display: block; }

/* Stat group */
.stat-group { margin-bottom: 20px; border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; }
.stat-group:last-child { margin-bottom: 0; }
.stat-group-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 16px; background: linear-gradient(90deg, var(--gv-light), white);
    border-bottom: 1px solid var(--border);
}
.stat-group-name { font-weight: 800; font-size: .9rem; color: var(--gv-dark); display: flex; align-items: center; gap: 7px; }
.stat-group-meta { font-size: .78rem; font-weight: 700; color: var(--text-3); background: white; border: 1px solid var(--border); padding: 3px 10px; border-radius: 20px; }
.stat-subject-list { padding: 12px; background: #f8fafc; }
.stat-subject-group { background: white; border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; margin-bottom: 12px; }
.stat-subject-group:last-child { margin-bottom: 0; }
.stat-subject-header {
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    padding: 9px 12px; background: #fff; border-bottom: 1px solid var(--border);
}
.stat-subject-name { display: flex; align-items: center; gap: 7px; color: var(--text); font-size: .84rem; font-weight: 800; }
.stat-subject-meta { flex: 0 0 auto; color: var(--text-3); font-size: .75rem; font-weight: 700; }
.stat-empty {
    min-height: 120px; display: flex; align-items: center; justify-content: center; gap: 10px;
    color: var(--text-3); font-weight: 700; text-align: center;
}

/* Stat table */
.stat-table { width: 100%; border-collapse: collapse; font-size: .82rem; }
.stat-table th { background: #f1f5f9; color: var(--text-2); font-size: .72rem; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--border); }
.stat-table td { padding: 8px 12px; border-bottom: 1px solid #f1f5f9; color: var(--text); vertical-align: middle; }
.stat-table tr:last-child td { border-bottom: none; }
.stat-table tr:hover td { background: var(--gv-light); }
.stat-subject { font-weight: 700; color: var(--text); }
.stat-tiet { font-weight: 800; color: var(--gv-dark); text-align: center; }

@media (max-width: 768px) {
    .stat-subtab-bar { flex-direction: column; align-items: stretch; }
    .stat-summary { margin-left: 0; flex-wrap: wrap; }
    .stat-group-header,
    .stat-subject-header { align-items: flex-start; flex-direction: column; }
    .stat-panel { padding: 10px; }
    .stat-subject-list { padding: 10px; }
}

/* ===== LOGIN MODAL ===== */
.modal-overlay {
    position: fixed; inset: 0; background: rgba(15,23,42,.7);
    backdrop-filter: blur(8px); z-index: 10000;
    display: flex; align-items: center; justify-content: center;
    animation: fadeIn .2s ease;
}
.modal-overlay.hidden { display: none; }
.modal-box {
    background: white; border-radius: 20px; padding: 40px 36px;
    width: 100%; max-width: 400px;
    box-shadow: 0 24px 80px rgba(0,0,0,.35);
    animation: slideUp .3s cubic-bezier(.34,1.56,.64,1);
    text-align: center;
}
@keyframes slideUp { from { transform: translateY(30px) scale(.95); opacity: 0; } to { transform: translateY(0) scale(1); opacity: 1; } }
.modal-icon { width: 60px; height: 60px; background: linear-gradient(135deg, var(--gv), var(--gv-dark)); border-radius: 16px; margin: 0 auto 18px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; color: white; box-shadow: 0 8px 24px var(--gv-glow); }
.modal-title { font-size: 1.2rem; font-weight: 900; color: var(--text); margin-bottom: 6px; }
.modal-sub { font-size: .84rem; color: var(--text-3); margin-bottom: 24px; }
.modal-form { display: flex; flex-direction: column; gap: 12px; }
.modal-field { position: relative; }
.modal-field-icon { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--gv); font-size: .85rem; pointer-events: none; }
.modal-input {
    width: 100%; height: 46px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
    padding: 0 14px 0 38px; font-size: .9rem; font-weight: 600; font-family: inherit;
    outline: none; transition: border-color .2s, box-shadow .2s;
}
.modal-input:focus { border-color: var(--gv); box-shadow: 0 0 0 3px var(--gv-glow); }
.modal-domain-hint {
    position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
    font-size: .75rem; font-weight: 700; color: var(--text-3);
    pointer-events: none; white-space: nowrap;
}
.login-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; border-radius: var(--radius-sm); padding: 9px 12px; font-size: .82rem; font-weight: 600; text-align: left; }
.login-warning-box {
    background: #fffbeb; border: 1.5px solid #fef3c7; color: #92400e; border-radius: var(--radius-sm);
    padding: 11px 14px; font-size: .8rem; font-weight: 600; text-align: left; margin-bottom: 12px;
    display: flex; gap: 10px; align-items: flex-start; line-height: 1.4;
}
.login-warning-box i { color: #d97706; font-size: 1.05rem; margin-top: 1px; flex-shrink: 0; }
.kegc-inp.kegc-inp-error,
.kegc-inp.kegc-inp-dup {
    border-color: #ef4444 !important;
    background-color: #fef2f2 !important;
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.15) !important;
}
.modal-btn {
    height: 46px; background: linear-gradient(135deg, var(--gv), var(--gv-dark)); color: white;
    border: none; border-radius: var(--radius-sm); font-size: .92rem; font-weight: 800;
    cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 8px;
    transition: all .2s; box-shadow: 0 4px 16px var(--gv-glow); margin-top: 4px;
}
.modal-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 24px var(--gv-glow); }
.modal-btn:disabled { opacity: .6; cursor: not-allowed; transform: none; }
.modal-cancel-btn {
    background: none; border: none; color: var(--text-3); font-size: .82rem; font-weight: 600;
    cursor: pointer; padding: 4px; transition: color .2s;
}
.modal-cancel-btn:hover { color: var(--text-2); }

/* Stat date modal layout */
.stat-modal-date-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; width: 100%; }
.stat-modal-date-group { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.stat-modal-label { font-size: .72rem; font-weight: 700; color: var(--text-2); text-transform: uppercase; letter-spacing: .07em; text-align: left; }
.stat-date-full { width: 100%; padding: 0 12px !important; box-sizing: border-box; }

/* ===== KÊ GIỜ CHUẨN ===== */
.filter-card.kegc-theme { border-top: 4px solid var(--kegc); }
.kegc-theme .filter-title i { color: var(--kegc); }
.kegc-theme .form-input:focus { border-color: var(--kegc); box-shadow: 0 0 0 3px var(--kegc-glow); }
.search-btn.kegc-auto,
.search-btn.kegc-print { background: var(--kegc); color: white; }
.search-btn.kegc-auto:hover,
.search-btn.kegc-print:hover { transform: translateY(-1px); box-shadow: 0 4px 14px var(--kegc-glow); background: var(--kegc-dark); }
.filter-card.kepc-theme { border-top: 4px solid var(--kepc); }
.kepc-theme .filter-title i { color: var(--kepc); }
.kepc-theme .form-input:focus { border-color: var(--kepc); box-shadow: 0 0 0 3px var(--kepc-glow); }
.search-btn.kepc-auto,
.search-btn.kepc-print { background: var(--kepc); color: white; }
.search-btn.kepc-auto:hover,
.search-btn.kepc-print:hover { transform: translateY(-1px); box-shadow: 0 4px 14px var(--kepc-glow); background: var(--kepc-dark); }

/* KGC Board */
.kegc-board { background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border); overflow: hidden; }
.kegc-board-header { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px; background: var(--kegc-light); border-bottom: 1px solid var(--border); }
.kegc-board-title { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: .95rem; color: var(--kegc-dark); }
.kegc-board-title i { color: var(--kegc); }
.kegc-add-btn { display: flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: var(--radius-sm); border: 1.5px solid var(--kegc); background: var(--kegc-light); color: var(--kegc-dark); font-size: .8rem; font-weight: 700; cursor: pointer; transition: all .2s; }
.kegc-add-btn:hover { background: var(--kegc); color: white; }
.kegc-add-btn:disabled { opacity: .55; cursor: not-allowed; }
.kegc-add-btn:disabled:hover { background: var(--kegc-light); color: var(--kegc-dark); }
.kegc-table-wrap { overflow-x: auto; }
.kegc-table, .kegc-table * { box-sizing: border-box; }
.kegc-table { width: 100%; max-width: 100%; border-collapse: collapse; min-width: 1180px; table-layout: fixed; font-size: .82rem; }
.kegc-col-stt { width: 4%; }
.kegc-col-lop { width: 11%; }
.kegc-col-mon { width: 23%; }
.kegc-col-pl { width: 10%; }
.kegc-col-days { width: 14%; }
.kegc-col-tiet { width: 6%; }
.kegc-col-siso { width: 6%; }
.kegc-col-hsld { width: 6%; }
.kegc-col-hsqd { width: 6%; }
.kegc-col-hsk { width: 5%; }
.kegc-col-gio { width: 6%; }
.kegc-col-action { width: 3%; }
.kegc-table th { background: var(--kegc-dark); color: white; padding: 9px 5px; text-align: left; font-size: .68rem; font-weight: 800; text-transform: uppercase; letter-spacing: .02em; border-bottom: 2px solid var(--kegc); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.kegc-th-stt, .kegc-th-tiet, .kegc-th-siso, .kegc-th-hsld, .kegc-th-hsqd, .kegc-th-hsk, .kegc-th-gio, .kegc-th-action { text-align: center; }
.kegc-table td { border-bottom: 1px solid var(--border); padding: 4px; vertical-align: middle; overflow: hidden; }
.kegc-table tr.kegc-data-row:hover td { background: #eff6ff; }
.kegc-table tr.kegc-row-dup td { background: #fef2f2; }
.kegc-table tr.kegc-row-dup:hover td { background: #fee2e2; }
.kegc-td-stt { text-align: center; font-weight: 700; color: var(--text-3); font-size: .8rem; }
.kegc-inp { width: 100%; min-width: 0; border: 1.5px solid transparent; border-radius: 6px; padding: 5px 5px; font-size: .82rem; font-family: inherit; font-weight: 600; color: var(--text); background: transparent; outline: none; transition: all .15s; }
.kegc-inp[type="number"] { -moz-appearance: textfield; }
.kegc-inp[type="number"]::-webkit-outer-spin-button,
.kegc-inp[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.kegc-inp:focus { border-color: var(--kegc); background: white; box-shadow: 0 0 0 2px var(--kegc-glow); }
.kegc-inp:hover:not(:focus) { border-color: #bfdbfe; background: #eff6ff; }
.kegc-row-merged .kegc-inp-lop { color: #1d4ed8; background: #eff6ff; border-color: #bfdbfe; }
.kegc-inp-tiet-num, .kegc-inp-siso-num, .kegc-inp-hsld-num, .kegc-inp-hsqd-num, .kegc-inp-hsk-num, .kegc-inp-gio-num { text-align: center; }
.kegc-inp[readonly] { color: var(--text-2); background: #f8fafc; }
.kegc-inp-days-wide { min-width: 0; }
.kegc-td-action { text-align: center; }
.kegc-del-btn { width: 28px; height: 28px; border-radius: 6px; border: none; background: #dbeafe; color: var(--kegc-dark); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: .8rem; transition: all .15s; margin: auto; }
.kegc-del-btn:hover { background: var(--kegc-dark); color: white; }
.kegc-empty-cell { padding: 0 !important; }
.kegc-footer { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; border-top: 1.5px solid var(--border); background: #eff6ff; flex-wrap: wrap; gap: 8px; }
.kegc-row-count { font-size: .78rem; color: var(--text-3); font-weight: 600; }
.kegc-footer-right { display: flex; align-items: center; gap: 8px; }
.kegc-total-label { font-size: .84rem; font-weight: 700; color: var(--text-2); }
.kegc-total-val { font-size: 1.5rem; font-weight: 900; color: var(--kegc-dark); line-height: 1; }
.kegc-total-unit { font-size: .84rem; font-weight: 700; color: var(--text-3); }

/* Row border-left theo phân loại */
.kegc-data-row.kegc-pl-lt td:first-child,
.kegc-data-row.kegc-pl-th td:first-child,
.kegc-data-row.kegc-pl-tt td:first-child { border-left: 3px solid var(--kegc); }

/* KGC data status bar */
.kegc-data-status { font-size: .75rem; color: var(--text-3); font-weight: 600; display: flex; align-items: center; gap: 5px; }
.kegc-data-status.saved { color: var(--kegc-dark); }
.kegc-data-status.dirty { color: var(--kegc); }
.print-cell-text { display: none; }

/* KEPC uses the same restrained blue table surface as KGC */
.kepc-table { min-width: 980px; }
.kepc-col-stt { width: 4%; }
.kepc-col-lop { width: 14%; }
.kepc-col-mon { width: 31%; }
.kepc-col-days { width: 24%; }
.kepc-col-tiet { width: 8%; }
.kepc-col-hsqd { width: 7%; }
.kepc-col-gio { width: 9%; }
.kepc-col-action { width: 3%; }
#kepc-data-status.saved { color: var(--kepc-dark); }
#kepc-data-status.dirty { color: var(--kepc); }

@media (max-width: 768px) {
    .kegc-board-header { flex-direction: column; align-items: stretch; gap: 8px; }
    .kegc-footer { flex-direction: column; align-items: stretch; }
    .kegc-footer-right { justify-content: flex-end; }
    .auth-user-name { display: none; }
}

@media (min-width: 1200px) {
    .kegc-table-wrap { overflow-x: hidden; }
    .kegc-table { min-width: 0; }
    .kepc-table { min-width: 0; }
}

@media print {
    /* Mặc định theo mẫu chuẩn: A4 dọc. JS sẽ đổi sang ngang khi người dùng chọn. */
    @page {
        size: A4 portrait;
        margin: 10mm 10mm 10mm 10mm;
    }
    
    /* Ẩn tất cả thành phần không cần thiết khi in */
    header, 
    .tab-bar, 
    .filter-card, 
    .kegc-board-header, 
    .kegc-del-btn, 
    .kegc-th-action, 
    .kegc-td-action,
    .loading-overlay,
    .toast-wrap,
    .modal-overlay,
    #kegc-empty-row,
    #kepc-empty-row,
    #panel-sv,
    #panel-gv,
    #panel-kegc,
    #panel-kepc {
        display: none !important;
    }
    
    /* Đảm bảo đúng panel kê khai hiển thị khi in */
    body.printing-kegc #panel-kegc {
        display: block !important;
    }
    body.printing-kepc #panel-kepc {
        display: block !important;
    }
    body:not(.printing-kegc):not(.printing-kepc) #panel-kegc.active {
        display: block !important;
    }
    body:not(.printing-kegc):not(.printing-kepc) #panel-kepc.active {
        display: block !important;
    }
    
    /* Tránh ngắt trang trong bảng */
    .kegc-table, .kegc-board {
        page-break-inside: auto;
    }
    .kegc-data-row {
        page-break-inside: avoid;
    }
    
    /* Thiết lập lại trang cho trình in */
    body, html {
        background: #fff !important;
        color: #000 !important;
        font-family: "Times New Roman", Times, serif !important;
        font-size: 9pt !important;
        margin: 0 !important;
        padding: 0 !important;
    }
    
    main {
        margin: 0 !important;
        padding: 0 !important;
        max-width: 100% !important;
        box-shadow: none !important;
    }
    
    .container {
        max-width: 100% !important;
        padding: 0 !important;
        margin: 0 !important;
    }
    
    .kegc-board {
        border: none !important;
        box-shadow: none !important;
        background: #fff !important;
        overflow: visible !important;
        margin: 0 !important;
        padding: 0 !important;
    }
    
    .kegc-table-wrap {
        overflow: visible !important;
    }
    
    .kegc-table {
        width: 100% !important;
        min-width: 0 !important;
        border-collapse: collapse !important;
        table-layout: fixed !important;
        margin-top: 15px !important;
    }
    
    .kegc-table th {
        background: #f3f4f6 !important;
        color: #000 !important;
        border: 1px solid #000 !important;
        font-weight: 700 !important;
        font-size: 7.4pt !important;
        line-height: 1.15 !important;
        padding: 4px 3px !important;
        text-transform: none !important;
        letter-spacing: 0 !important;
        white-space: normal !important;
        overflow: visible !important;
        text-overflow: clip !important;
    }
    
    .kegc-table td {
        border: 1px solid #000 !important;
        color: #000 !important;
        padding: 4px 3px !important;
        background: #fff !important;
        overflow: visible !important;
        line-height: 1.2 !important;
        overflow-wrap: anywhere !important;
        word-break: normal !important;
    }
    
    /* Làm phẳng input/select trong bảng khi in */
    .kegc-inp {
        border: none !important;
        padding: 0 !important;
        background: transparent !important;
        color: #000 !important;
        font-family: "Times New Roman", Times, serif !important;
        font-size: 7.8pt !important;
        height: auto !important;
        box-shadow: none !important;
        white-space: normal !important;
        overflow: visible !important;
        text-overflow: clip !important;
    }
    .kegc-inp:hover, .kegc-inp:focus {
        background: transparent !important;
    }
    .kegc-table input.kegc-inp,
    .kegc-table select.kegc-inp {
        display: none !important;
    }
    .kegc-table .print-cell-text {
        display: block !important;
        min-height: 1em !important;
        color: #000 !important;
        font-family: "Times New Roman", Times, serif !important;
        font-size: 7.8pt !important;
        line-height: 1.2 !important;
        white-space: normal !important;
        overflow-wrap: anywhere !important;
    }
    
    /* Cân đối cột */
    .kegc-col-stt { width: 4% !important; }
    .kegc-col-lop { width: 11% !important; }
    .kegc-col-mon { width: 22% !important; }
    .kegc-col-pl { width: 9% !important; }
    .kegc-col-days { width: 14% !important; }
    .kegc-col-tiet { width: 6% !important; }
    .kegc-col-siso { width: 6% !important; }
    .kegc-col-hsld { width: 6% !important; }
    .kegc-col-hsqd { width: 6% !important; }
    .kegc-col-hsk { width: 6% !important; }
    .kegc-col-gio { width: 10% !important; }
    .kegc-col-action { width: 0 !important; }
    .kepc-col-stt { width: 5% !important; }
    .kepc-col-lop { width: 14% !important; }
    .kepc-col-mon { width: 31% !important; }
    .kepc-col-days { width: 24% !important; }
    .kepc-col-tiet { width: 8% !important; }
    .kepc-col-hsqd { width: 8% !important; }
    .kepc-col-gio { width: 10% !important; }
    .kepc-col-action { width: 0 !important; }
    .kegc-th-stt, .kegc-td-stt {
        width: 4% !important;
        text-align: center !important;
    }
    .kegc-th-lop { width: 11% !important; }
    .kegc-th-mon { width: 22% !important; }
    .kegc-th-pl { width: 9% !important; }
    .kegc-th-days { width: 14% !important; }
    .kegc-th-tiet, .kegc-inp-tiet-num {
        width: 6% !important;
        text-align: center !important;
    }
    .kegc-th-siso, .kegc-inp-siso-num,
    .kegc-th-hsld, .kegc-inp-hsld-num,
    .kegc-th-hsqd, .kegc-inp-hsqd-num,
    .kegc-th-hsk, .kegc-inp-hsk-num {
        width: 6% !important;
        text-align: center !important;
    }
    .kegc-th-gio, .kegc-inp-gio-num {
        width: 10% !important;
        text-align: center !important;
    }
    
    /* Phân loại border-left không in màu */
    .kegc-data-row.kegc-pl-lt td:first-child,
    .kegc-data-row.kegc-pl-th td:first-child,
    .kegc-data-row.kegc-pl-tt td:first-child {
        border-left: 1px solid #000 !important;
    }
    
    .kegc-footer {
        border: 1px solid #000 !important;
        border-top: none !important;
        background: #fff !important;
        padding: 0 !important;
        display: block !important;
    }
    
    .kegc-footer-left {
        display: none !important;
    }
    
    .kegc-total-val {
        font-size: 9pt !important;
        font-weight: 700 !important;
        color: #000 !important;
    }
    .kegc-footer-right {
        display: grid !important;
        grid-template-columns: 1fr 10% !important;
        align-items: stretch !important;
        width: 100% !important;
        gap: 0 !important;
    }
    
    /* Hiển thị khu vực in chuyên biệt */
    .print-only-header {
        display: block !important;
        margin-bottom: 20px !important;
    }
    
    body.printing-landscape .kegc-table th { font-size: 8.5pt !important; padding: 5px 4px !important; }
    body.printing-landscape .kegc-table td { padding: 5px 4px !important; }
    body.printing-landscape .kegc-table .print-cell-text { font-size: 9.5pt !important; }
    
    .print-header-top {
        display: grid !important;
        grid-template-columns: 40% 60% !important;
        gap: 8px !important;
        align-items: flex-start !important;
        font-size: 9.5pt !important;
        margin-bottom: 14px !important;
    }
    
    .print-org {
        text-align: center !important;
        font-weight: 700 !important;
        line-height: 1.35 !important;
    }
    
    .print-title-block {
        text-align: center !important;
        line-height: 1.35 !important;
    }

    .print-title-main {
        font-weight: 700 !important;
        font-size: 11pt !important;
        text-transform: uppercase !important;
    }

    .print-title-range {
        font-weight: 700 !important;
        font-style: italic !important;
        font-size: 9.5pt !important;
        margin-top: 4px !important;
    }
    
    .print-title {
        text-align: center !important;
        font-size: 14pt !important;
        font-weight: 700 !important;
        margin: 0 0 5px 0 !important;
    }
    
    .print-sub-title {
        text-align: center !important;
        font-size: 10pt !important;
        font-style: italic !important;
        margin-bottom: 20px !important;
    }
    
    .print-gv-info {
        display: flex !important;
        justify-content: space-between !important;
        align-items: flex-start !important;
        font-size: 10pt !important;
        margin-bottom: 10px !important;
        border-bottom: none !important;
        padding-bottom: 0 !important;
        gap: 12px !important;
    }
    .print-gv-left {
        min-width: 0 !important;
        max-width: 70% !important;
        white-space: normal !important;
        overflow-wrap: anywhere !important;
        line-height: 1.35 !important;
        font-weight: 700 !important;
    }
    .print-gv-unit {
        text-transform: uppercase !important;
    }
    .print-gv-month {
        white-space: nowrap !important;
        font-weight: 700 !important;
        padding-top: 18px !important;
    }
    
    .print-only-footer {
        display: block !important;
        margin-top: 8px !important;
        page-break-inside: avoid !important;
    }

    .print-total-words {
        font-size: 10pt !important;
        margin: 8px 0 8px !important;
    }
    
    .print-date-line {
        text-align: right !important;
        font-style: italic !important;
        font-size: 10pt !important;
        margin-bottom: 15px !important;
        padding-right: 30px !important;
    }
    
    .print-sign-row {
        display: grid !important;
        grid-template-columns: 1fr 1fr !important;
        gap: 30px !important;
        text-align: center !important;
        font-size: 11pt !important;
    }
    
    .print-sign-col {
        display: flex !important;
        flex-direction: column !important;
        align-items: center !important;
    }
    
    .print-sign-title {
        font-weight: 700 !important;
    }
    
    .print-sign-desc {
        font-style: italic !important;
        font-size: 9pt !important;
        margin-top: 2px !important;
    }
    
    .print-sign-space {
        height: 70px !important;
    }

    .print-sign-line {
        width: 120px !important;
        border-bottom: 1px dotted #000 !important;
        margin-top: 2px !important;
    }

    .kegc-total-label {
        font-size: 0 !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        border-right: 1px solid #000 !important;
        padding: 4px 3px !important;
    }
    .kegc-total-label::after {
        content: "Tổng";
        font-size: 9pt !important;
        font-weight: 700 !important;
    }
    .kegc-total-val {
        display: flex !important;
        align-items: center !important;
        justify-content: flex-end !important;
        padding: 4px 3px !important;
    }
    .kegc-total-unit {
        display: none !important;
    }
}