:root{--blue:#1f4387;--blue2:#17356f;--accent:#2d66e2;--bg:#f4f7fb;--border:#dbe3ef}*{box-sizing:border-box}body{margin:0;background:var(--bg);font-family:"Segoe UI",Tahoma,Arial,sans-serif;color:#26354a}.app{display:flex;min-height:100vh}.sidebar{width:260px;background:linear-gradient(180deg,var(--blue2),var(--blue));color:#fff;position:fixed;inset:0 auto 0 0;overflow:auto;z-index:20}.brand{display:flex;gap:10px;align-items:center;padding:18px 16px;border-bottom:1px solid #ffffff22}.brand img{width:48px;height:48px;object-fit:contain;background:white;border-radius:9px}.brand small{display:block;font-size:10px;opacity:.8;margin-top:3px}.sidebar nav{padding:12px}.sidebar a{display:block;color:#eaf0ff;text-decoration:none;padding:11px 12px;border-radius:8px;margin:3px 0}.sidebar a:hover{background:#ffffff18;color:white}.app main{margin-left:260px;width:calc(100% - 260px)}.topbar{height:62px;background:white;display:flex;align-items:center;padding:0 22px;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.topbar a{color:var(--blue);text-decoration:none}.content{padding:24px}.menu-btn{display:none;border:0;background:none;font-size:24px}.page-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.metric{background:white;border:1px solid var(--border);border-radius:12px;padding:18px;min-height:102px;box-shadow:0 2px 10px #17356f0a}.metric b{display:block;color:var(--blue);font-size:30px}.metric span{color:#617087}.metric.warning b{color:#d38b00}.metric.danger b{color:#c0392b}.card{border-color:var(--border);border-radius:12px}.table{background:white}.table th{color:var(--blue2);background:#eef4ff}.btn-primary{background:var(--accent);border-color:var(--accent)}input.form-control,select.form-select{min-height:40px}.materials-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:14px}.material-card{background:white;border:1px solid var(--border);border-radius:12px;padding:16px}.material-card h5{margin-bottom:0}.material-card .stats{display:grid;grid-template-columns:1fr 1fr;gap:5px;margin:12px 0;font-size:13px}.material-card .available{grid-column:1/3;background:#edf8ef;padding:8px;border-radius:8px;color:#176b28}.sticky-submit{position:sticky;bottom:15px;margin-top:18px;box-shadow:0 5px 20px #0002}.qty{min-width:90px}.login-wrap{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#e9f0ff,#f8fbff)}.login-card{width:min(420px,92vw);background:#fff;border-radius:16px;padding:28px;box-shadow:0 16px 45px #17356f2d;text-align:center}.login-logo{width:95px;height:95px;object-fit:contain;margin-bottom:10px}.login-card label{display:block;text-align:left;font-weight:600;margin-bottom:5px}@media(max-width:900px){.sidebar{transform:translateX(-100%);transition:.2s}.nav-open .sidebar{transform:translateX(0)}.app main{margin-left:0;width:100%}.menu-btn{display:block}.content{padding:14px}.table{font-size:13px}.materials-grid{grid-template-columns:1fr}}

/* ===== V1.1 - Login đồng bộ HRM_BCTech_V34 ===== */
:root{--school-blue:#1f4387;--school-blue-dark:#17356f;--school-gold:#d7b15a}
.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(180deg,#e7f0ff 0,#f4f8fc 50%,#f8fbff 100%);font-family:"Segoe UI",Tahoma,Arial,sans-serif;margin:0;color:#1f2937}
.login-shell{width:min(1180px,96vw);margin:24px auto}
.login-header{background:linear-gradient(90deg,#24488f 0,#304f98 55%,#3a5aa6 100%);border-radius:24px 24px 0 0;padding:16px 26px;color:#fff;display:flex;align-items:center}
.login-school-brand{display:flex;align-items:center;gap:18px;width:100%;min-width:0}.school-logo{width:78px;height:78px;object-fit:contain;flex:0 0 auto}.school-title-wrap{display:flex;flex-direction:column;gap:6px;min-width:0}.school-title{color:var(--school-gold);font-weight:800;text-transform:uppercase;line-height:1.15;letter-spacing:.2px}.school-title-main-one-line{font-size:26px;line-height:1.08;font-weight:900;white-space:nowrap}.school-title-sub{color:rgba(255,255,255,.9);font-weight:700;font-size:13px}.school-title-sub-strong{white-space:nowrap}
.login-main{display:grid;grid-template-columns:1.4fr .9fr;border-radius:0 0 24px 24px;overflow:hidden;box-shadow:0 1rem 2.5rem rgba(23,53,111,.18)}
.login-hero{position:relative;background:radial-gradient(circle at 14% 18%,rgba(255,255,255,.22),transparent 16%),radial-gradient(circle at 82% 20%,rgba(255,255,255,.14),transparent 18%),linear-gradient(135deg,#17356f 0,#214a93 55%,#2b6cb0 100%);color:#fff;min-height:520px;padding:56px;display:flex;flex-direction:column;justify-content:center}
.login-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(45deg,rgba(255,255,255,.05) 25%,transparent 25%,transparent 50%,rgba(255,255,255,.05) 50%,rgba(255,255,255,.05) 75%,transparent 75%,transparent);background-size:26px 26px;opacity:.18}.login-hero>*{position:relative;z-index:1}.hero-badge{display:inline-flex;align-self:flex-start;padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.14);font-weight:700}.login-hero h1{font-size:36px;line-height:1.2;font-weight:900;margin:14px 0}.login-hero p{font-size:16px;line-height:1.7;color:rgba(255,255,255,.9);max-width:570px}.hero-feature-list{margin-top:14px;display:grid;gap:10px;font-weight:700}
.login-card-school{background:#fff;height:100%;display:flex;flex-direction:column;justify-content:center;padding:48px;max-width:none;border-radius:0;border:0}.login-card-title{text-align:center;margin-bottom:22px}.login-card-title h2{font-size:26px;margin:6px 0;color:#17356f}.login-card-title p{margin:0;color:#667085;font-size:13px;line-height:1.4}.text-school-gold{color:var(--school-gold);font-weight:800;text-transform:uppercase;letter-spacing:.8px}.field{margin-bottom:14px}.field label{font-weight:700;margin-bottom:6px;display:block;color:#17356f}.login-page input{width:100%;padding:11px 12px;border:1px solid #cbd5e1;border-radius:12px;background:#fff;font-size:14px}.login-page input:focus{outline:none;border-color:#90b4f7;box-shadow:0 0 0 .2rem rgba(33,74,147,.12)}.password-row{display:flex;gap:8px}.password-row input{flex:1}.password-row .btn{width:72px;box-shadow:none}.login-page .btn{border:0;border-radius:12px;padding:10px 13px;cursor:pointer;font-weight:700}.login-page .btn.light{background:#e2e8f0;color:#0f172a}.btn-brand-primary{background:linear-gradient(90deg,#17356f,#1f4387);color:#fff!important;border:none!important;font-weight:800;box-shadow:0 .45rem 1rem rgba(31,67,135,.18)}.login-btn{width:100%;margin-top:8px;padding:12px!important}.login-footer-note{font-size:13px;color:#667085;margin-top:16px;line-height:1.5}
.login-page .alert{padding:11px 13px;border-radius:12px;margin-bottom:13px}.login-page .alert-error,.login-page .alert-danger{background:#fef3f2;border:1px solid #fecdca;color:#b42318}.login-page .alert-success{background:#ecfdf3;border:1px solid #abefc6;color:#087443}.login-page .alert-info{background:#eff6ff;border:1px solid #bfdbfe;color:#1d4ed8}

/* ===== V1.1 - cải thiện giao diện ứng dụng ===== */
.nav-section{font-size:10px;letter-spacing:.8px;font-weight:800;color:#a9bce5;margin:18px 10px 6px}.topbar-title{font-size:12px;font-weight:800;color:#17356f;margin-left:14px}.user-chip{font-size:13px}.status-pill{display:inline-block;padding:5px 9px;border-radius:999px;background:#eef2f7;color:#334155;font-size:12px;font-weight:700}.status-qattb-approved,.status-qttb_approved,.status-dean_approved,.status-confirmed{background:#dcfce7;color:#166534}.status-submitted,.status-dean_proposed{background:#dbeafe;color:#1d4ed8}.status-dean_returned,.status-qttb_returned{background:#fef3c7;color:#92400e}.status-draft{background:#f1f5f9;color:#475569}.allocation-line{margin:3px 0;display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.content form input:not([type="checkbox"]):not([type="radio"]):not([type="hidden"]),.content form select,.content form textarea{border:1px solid #ced7e5;border-radius:8px;padding:8px 10px;max-width:100%}.content form ul{list-style:none;padding-left:0;margin:0;display:flex;gap:14px;flex-wrap:wrap}.content form ul label{display:flex;gap:6px;align-items:center}.content form input[type="checkbox"]{width:auto}

@media(max-width:992px){.login-main{grid-template-columns:1fr}.login-hero{display:none}.login-shell{width:min(96vw,720px);margin:16px auto}.login-header{border-radius:18px 18px 0 0;padding:14px 16px}.login-card-school{padding:28px}.school-title-main-one-line{font-size:19px;white-space:normal}.topbar-title{display:none}}
@media(max-width:640px){.login-page{align-items:flex-start;min-height:100dvh}.login-shell{width:100%;margin:0}.login-header{border-radius:0;padding:12px 14px}.login-main{border-radius:0;box-shadow:none}.login-card-school{padding:24px 16px}.login-school-logo{width:58px;height:58px}.school-title-main-one-line{font-size:15px}.school-title-sub-strong{font-size:11px}}
.metric-link{text-decoration:none;color:inherit}.metric-link:hover .metric{box-shadow:0 8px 24px rgba(23,53,111,.12);transform:translateY(-1px)}

/* ===== V1.2 - Tổng quan + nhập môn/lớp tự do ===== */
.request-meta-card .form-control,.request-meta-card .form-select{width:100%}.request-meta-card .text-muted{max-width:720px}.table td small{color:#64748b}.page-title h3{color:var(--blue2);font-weight:800}.overview-note{background:#eef4ff;border:1px solid #d8e5fb;border-radius:12px;padding:12px 14px;color:#274775}

/* ===== V1.2 - FIX FONT TIẾNG VIỆT =====
   Đồng bộ với HRM_BCTech_V34. Segoe UI/Tahoma hiển thị đầy đủ và đồng cỡ
   các glyph tiếng Việt như Ư, Ơ, Ê, Đ trên Windows/Chrome. */
html,body,button,input,select,textarea,table,.btn,.form-control,.form-select,.sidebar,.topbar,.content,.login-page{
  font-family:"Segoe UI",Tahoma,Arial,sans-serif!important;
}
button,input,select,textarea{font:inherit}
.school-title,.school-title-main-one-line,.school-title-sub,.login-hero,.login-card-school{
  font-family:"Segoe UI",Tahoma,Arial,sans-serif!important;
}

/* V1.3 - QTTB bulk approval */
.card-header.bg-primary { background-color: #27458e !important; }
#bulkApproveForm .form-label { font-weight: 600; }

/* ===== Giao diện đồng bộ phong cách HRM_BCTech_V34 ===== */
:root{
  --v34-blue:#24488f;--v34-blue2:#304f98;--v34-blue3:#3a5aa6;
  --v34-deep:#17356f;--v34-gold:#e0bd4d;--v34-bg:#f4f8fc;
  --v34-line:#dce4ef;--v34-text:#1f2937;--v34-muted:#6b7280;
}
body.app-authenticated{margin:0;background:linear-gradient(180deg,#f7faff 0,#f3f7fc 100%);color:var(--v34-text);font-family:Tahoma,"Segoe UI",Arial,sans-serif!important;font-size:14px}
.school-header-v34{position:sticky;top:0;z-index:1040;box-shadow:0 4px 18px rgba(22,38,74,.10)}
.school-topbar-v34{min-height:76px;background:linear-gradient(90deg,var(--v34-blue) 0,var(--v34-blue2) 55%,var(--v34-blue3) 100%);color:#fff;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:8px 18px;border-bottom:1px solid rgba(255,255,255,.10)}
.school-brand-v34{display:flex;align-items:center;gap:12px;min-width:0;flex:1 1 auto}.school-logo-link-v34{display:inline-flex;flex:0 0 auto}.school-logo-v34{width:54px;height:54px;object-fit:contain}.school-title-wrap-v34{min-width:0;display:flex;flex-direction:column;gap:3px}.school-title-v34{font-family:Tahoma,"Segoe UI",Arial,sans-serif!important;color:var(--v34-gold);font-size:24px;line-height:1.05;font-weight:900;text-transform:uppercase;white-space:nowrap;text-shadow:0 1px 0 rgba(0,0,0,.12);letter-spacing:.1px}.school-subtitle-v34{font-size:13px;line-height:1.1;font-weight:900;color:#fff;text-transform:uppercase;letter-spacing:.2px}
.school-actions-v34{display:flex;align-items:center;gap:8px;flex:0 0 auto}.top-user-chip-v34{display:inline-flex;align-items:center;gap:5px;max-width:410px;padding:6px 12px;border-radius:999px;background:rgba(255,255,255,.20);font-size:13px;font-weight:800;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.top-action-v34{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;background:rgba(255,255,255,.15);color:#fff!important;text-decoration:none;font-size:12px;font-weight:800;white-space:nowrap}.top-action-v34:hover{background:rgba(255,255,255,.26);color:#ffe79a!important}.mobile-menu-v34{display:none;border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.10);color:#fff;border-radius:10px;width:38px;height:38px;font-size:20px}
.app-shell-v34{display:flex;min-height:calc(100vh - 76px)}.sidebar-v34{width:228px;flex:0 0 228px;background:#f8faff;border-right:1px solid #dfe6f1;position:sticky;top:76px;height:calc(100vh - 76px);overflow:auto;z-index:1020}.sidebar-scroll-v34{padding:10px 8px 24px}.sidebar-group-title-v34{font-size:10px;letter-spacing:.75px;font-weight:900;color:#6e82aa;margin:14px 10px 5px;text-transform:uppercase}.sidebar-link-v34{display:flex;align-items:center;gap:8px;color:#19315f!important;text-decoration:none!important;padding:8px 10px;margin:2px 0;border-radius:9px;font-size:13.5px;font-weight:750;line-height:1.25}.sidebar-link-v34:hover{background:#e8eefb;color:#1d4fbf!important}.sidebar-link-v34.active{background:linear-gradient(90deg,#315fca,#4a76dc);color:#fff!important;box-shadow:0 8px 18px rgba(51,93,179,.18)}.side-icon-v34{width:25px;min-width:25px;height:25px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;background:#e0e7f7;font-size:14px}.sidebar-link-v34.active .side-icon-v34{background:rgba(255,255,255,.17)}
.content-shell-v34{flex:1 1 auto;min-width:0;padding:14px 18px 24px}.mobile-context-v34{display:none}.sidebar-overlay-v34{display:none}
/* Các trang hiện hữu dùng page-title/card/table của V1: tinh chỉnh để gần HRM V34 mà không phải sửa từng trang. */
.content-shell-v34 .page-title{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin:0 0 12px;padding:0 0 9px;border-bottom:1px solid #dfe6f1}.content-shell-v34 .page-title h1,.content-shell-v34 .page-title h2,.content-shell-v34 .page-title h3{margin:0;color:#17356f;font-size:25px;font-weight:900}.content-shell-v34 .page-title .text-muted{font-size:13px;margin-top:3px}.page-heading-v34{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin:0 0 12px;padding:0 0 9px;border-bottom:1px solid #dfe6f1}.page-heading-v34 h1{margin:0;color:#17356f;font-size:25px;font-weight:900}.page-subtitle-v34{color:#6b7280;font-size:13px;margin-top:3px}.content-shell-v34 .card,.v34-card{border:1px solid #e0e8f3!important;border-radius:14px!important;box-shadow:0 5px 16px rgba(23,53,111,.055)!important;background:#fff}.content-shell-v34 .card-header{background:#f7faff;border-bottom:1px solid #e1e9f3;font-weight:850;color:#17356f}.content-shell-v34 .table{font-size:13.5px;border-color:#e1e8f1}.content-shell-v34 .table th{background:#eef5ff!important;color:#17356f;font-weight:850;border-color:#dfe7f1;padding:7px 8px;vertical-align:middle}.content-shell-v34 .table td{padding:7px 8px;border-color:#e6ebf2;vertical-align:middle}.content-shell-v34 .table tbody tr:nth-child(even)>*{background:#fbfdff}.content-shell-v34 .metric{border-radius:14px;border-color:#e1e9f4;box-shadow:0 5px 14px rgba(23,53,111,.05);padding:15px}.content-shell-v34 .metric b{font-size:28px;color:#17356f}.content-shell-v34 .btn{border-radius:9px;font-weight:750}.content-shell-v34 .btn-primary{background:#315fca;border-color:#315fca}.content-shell-v34 input.form-control,.content-shell-v34 select.form-select,.content-shell-v34 textarea.form-control{border-radius:9px;border-color:#cfd9e8;min-height:39px}.content-shell-v34 input:focus,.content-shell-v34 select:focus,.content-shell-v34 textarea:focus{border-color:#7fa5ee;box-shadow:0 0 0 .18rem rgba(49,95,202,.12)}.v34-alert{border-radius:12px}.form-card-narrow{max-width:700px;padding:18px}.v34-form ul{padding-left:18px}.v34-form .helptext{color:#6b7280;font-size:12px}
@media(max-width:1400px){.school-title-v34{font-size:20px;white-space:normal}.top-user-chip-v34{max-width:300px}.sidebar-v34{width:218px;flex-basis:218px}}
@media(max-width:1024px){.action-text-v34{display:none}.top-action-v34{width:38px;height:38px;justify-content:center;padding:0}.top-user-chip-v34{display:none}.mobile-menu-v34{display:inline-flex;align-items:center;justify-content:center}.school-logo-v34{width:44px;height:44px}.school-topbar-v34{min-height:62px;padding:7px 10px}.school-title-v34{font-size:17px}.school-subtitle-v34{font-size:11px}.app-shell-v34{min-height:calc(100vh - 62px)}.sidebar-v34{position:fixed;left:0;top:62px;height:calc(100vh - 62px);width:250px;transform:translateX(-102%);transition:transform .2s ease;box-shadow:12px 0 30px rgba(0,0,0,.14)}body.nav-open .sidebar-v34{transform:translateX(0)}.sidebar-overlay-v34{position:fixed;inset:62px 0 0 0;background:rgba(15,23,42,.25);z-index:1010}body.nav-open .sidebar-overlay-v34{display:block}.content-shell-v34{padding:12px}.mobile-context-v34{display:flex;justify-content:space-between;gap:10px;background:#eef4ff;border:1px solid #dbe6f7;border-radius:10px;padding:8px 10px;margin-bottom:10px;font-size:12px;color:#17356f}}
@media(max-width:640px){.school-title-v34{font-size:14px;line-height:1.08}.school-subtitle-v34{font-size:9px}.school-brand-v34{gap:7px}.school-logo-v34{width:38px;height:38px}.content-shell-v34 .page-title h1,.content-shell-v34 .page-title h2,.content-shell-v34 .page-title h3,.page-heading-v34 h1{font-size:21px}.content-shell-v34{padding:10px}.content-shell-v34 .table{font-size:12.5px}}