:root { /* ============================================================================ DESIGN TOKENS v2 - Modern SaaS Dashboard (tham khảo tinh thần bố cục/khoảng cách của các dashboard quản trị hiện đại dạng sidebar + accent xanh, không sao chép thương hiệu/asset của bất kỳ sản phẩm cụ thể nào). Toàn bộ TÊN biến cũ được GIỮ NGUYÊN (bảo toàn mọi nơi đang dùng var(--primary), var(--navy), var(--danger,#dc2626)...) - chỉ cập nhật GIÁ TRỊ + bổ sung biến mới. ============================================================================ */ --primary: #2563EB; /* Accent Blue - trước là navy đậm #1E3A8A, nay là xanh hiện đại làm màu chủ đạo */ --navy: #1E3A8A; /* giữ lại làm màu "đậm" phụ trợ (gradient login, số liệu nhấn mạnh...) */ --navy-light: #2563EB; /* alias trỏ về --primary để mọi nơi dùng var(--navy-light) tự động đồng bộ accent mới */ --primary-hover: #1D4ED8; --primary-soft: #EFF6FF; /* nền highlight nhạt cho hover/active (sidebar, tab, chip...) */ --emerald: #059669; /* Accent phụ (tuỳ chọn) - dùng cho các điểm nhấn "thành công/khảo thí" nếu cần tách biệt với --primary */ --cyan: #06B6D4; --teal: #0D9488; --amber: #F59E0B; --coral: #F97316; --danger: #dc2626; --success: #16a34a; --bg: #F8FAFC; --bg-alt: #F1F5F9; --border: #e2e8f0; --text: #1e293b; /* ---- Neutrals (thang xám Slate) dùng cho icon/label trạng thái mặc định & phụ ---- */ --ink-900: #0f172a; --ink-700: #334155; --ink-500: #64748b; --ink-400: #94a3b8; --ink-300: #cbd5e1; /* ---- Bo góc & đổ bóng chuẩn hoá (card viền mỏng, bo góc rounded-xl, shadow tinh tế) ---- */ --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-pill: 999px; --shadow-xs: 0 1px 2px rgba(15,23,42,0.05); --shadow-sm: 0 1px 3px rgba(15,23,42,0.06); --shadow-md: 0 6px 16px rgba(15,23,42,0.08); --shadow-lg: 0 12px 32px rgba(15,23,42,0.14); /* ---- Thang khoảng cách (spacing scale 4px) ---- */ --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px; --space-5: 20px; --space-6: 24px; --space-8: 32px; /* ---- Kích thước khung Sidebar / Topbar / Mobile Bottom Nav ---- */ --sidebar-w: 264px; --sidebar-w-mini: 76px; --topbar-h: 64px; --sidebar-brand-h: 64px; --bottom-nav-h: 60px; --touch-target: 46px; /* chuẩn 44-48px cho nút/input/dropdown trên mobile */ } * { box-sizing: border-box; } body { margin: 0; font-family: 'Segoe UI', Roboto, Arial, sans-serif; background: var(--bg); color: var(--text); } /* ---------- LOGIN ---------- */ .login-wrapper { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--navy), var(--teal)); } .login-box { background: #fff; padding: 40px; border-radius: 16px; box-shadow: 0 20px 50px rgba(0,0,0,0.2); width: 380px; } .login-box h1 { font-size: 20px; color: var(--navy); text-align: center; margin-bottom: 4px; } .login-box p.subtitle { text-align: center; color: #6b7280; font-size: 13px; margin-bottom: 24px; } .form-group { margin-bottom: 16px; } .pass-field-wrap { position: relative; } .pass-field-wrap input { width: 100%; padding-right: 40px; } .pass-field-wrap .eye-toggle { position: absolute; right: 4px; top: 50%; transform: translateY(-50%); background: none; border: none; cursor: pointer; font-size: 15px; padding: 4px 8px; } .form-group label { display: block; font-size: 13px; margin-bottom: 6px; color: #374151; font-weight: 500; } .form-group input, .form-group select, .form-group textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; } .btn { display: inline-block; border: none; border-radius: 8px; padding: 10px 18px; font-size: 14px; cursor: pointer; font-weight: 600; transition: 0.15s; } .btn-primary { background: var(--navy-light); color: #fff; width: 100%; } .btn-primary:hover { background: var(--navy); } .btn-accent { background: var(--amber); color: #fff; } .btn-accent:hover { background: var(--coral); } .btn-danger { background: var(--danger); color: #fff; } .btn-secondary { background: #e5e7eb; color: var(--text); } .btn-sm { padding: 5px 10px; font-size: 12px; border-radius: 6px; border: none; cursor: pointer; } .btn-xs-danger { background: #fee2e2; color: var(--danger); } .btn-xs-primary { background: #dbeafe; color: var(--navy-light); } .error-msg { color: var(--danger); font-size: 13px; margin-top: 8px; min-height: 16px; } .demo-hint { margin-top: 20px; font-size: 12px; color: #9ca3af; text-align: center; line-height: 1.6; } /* ---------- TOPBAR & NAV ---------- */ .topbar { background: var(--navy); color: #fff; padding: 12px 20px; display: flex; justify-content: space-between; align-items: center; } .topbar .title { font-weight: 600; font-size: 15px; } .topbar .user-info { font-size: 13px; display: flex; align-items: center; gap: 12px; } .topbar button.logout { background: rgba(255,255,255,0.15); color: #fff; border: none; padding: 6px 12px; border-radius: 6px; cursor: pointer; font-size: 12px; } /* ==== Toolbar cố định: chuông / chat / avatar dropdown (chèn tự động bởi nav.js) ==== */ .topbar-extras { display: flex; align-items: center; gap: 6px; } .tb-icon-wrap { position: relative; } .tb-icon-btn { background: rgba(255,255,255,0.12); border: none; color: #fff; font-size: 16px; width: 34px; height: 34px; border-radius: 50%; cursor: pointer; position: relative; } .tb-icon-btn:hover { background: rgba(255,255,255,0.22); } .tb-badge { position: absolute; top: -2px; right: -2px; background: var(--danger, #dc2626); color: #fff; font-size: 10px; font-weight: 700; border-radius: 10px; padding: 1px 5px; min-width: 16px; text-align: center; } .tb-avatar-btn { background: none; border: none; cursor: pointer; padding: 0; } .tb-avatar-circle { display: flex; align-items: center; justify-content: center; width: 34px; height: 34px; border-radius: 50%; background: var(--amber, #f59e0b); color: #1e293b; font-weight: 700; font-size: 14px; } .tb-dropdown { display: none; position: absolute; top: 42px; right: 0; background: #fff; color: var(--text, #1f2937); border-radius: 10px; box-shadow: 0 8px 24px rgba(0,0,0,0.18); min-width: 220px; z-index: 60; overflow: hidden; padding: 6px 0; } .tb-dropdown.open { display: block; } .tb-dropdown-right { right: 0; left: auto; } .tb-dropdown-empty { padding: 14px; font-size: 12px; color: #9ca3af; text-align: center; } .tb-dropdown-header { padding: 10px 14px; font-size: 13px; font-weight: 700; border-bottom: 1px solid var(--border); margin-bottom: 4px; } .tb-dropdown-item { display: block; width: 100%; text-align: left; background: none; border: none; padding: 9px 14px; font-size: 13px; cursor: pointer; color: var(--text, #1f2937); } .tb-dropdown-item:hover { background: #f1f5f9; } .tb-dropdown-danger { color: var(--danger, #dc2626); } .tb-modal-backdrop { position: fixed; inset: 0; background: rgba(15,23,42,0.6); display: flex; align-items: center; justify-content: center; z-index: 70; } .tb-modal-box { background: #fff; border-radius: 16px; padding: 24px; width: 340px; } .tb-modal-box h3 { margin-top: 0; } /* ==== Floating Chatbox kiểu Facebook: cố định góc dưới-phải, KHÔNG dùng backdrop nên không chặn thao tác với phần còn lại của trang (khác với .tb-modal-backdrop dùng cho các modal Hồ sơ/Avatar/Đổi mật khẩu). ==== */ .fb-chatbox { position: fixed; bottom: 0; right: 20px; width: 320px; max-width: 92vw; background: #fff; border-radius: 10px 10px 0 0; box-shadow: 0 -4px 24px rgba(0,0,0,0.18); z-index: 1050; display: flex; flex-direction: column; overflow: hidden; } .fb-chatbox-header { background: var(--primary); color: #fff; padding: 10px 12px; display: flex; align-items: center; justify-content: space-between; gap: 8px; cursor: pointer; user-select: none; } .fb-chatbox-header .fb-title { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; } .fb-chatbox-header .fb-actions { display: flex; gap: 4px; flex-shrink: 0; } .fb-chatbox-header .fb-actions button { background: rgba(255,255,255,0.15); border: none; color: #fff; width: 22px; height: 22px; border-radius: 4px; cursor: pointer; font-size: 12px; line-height: 1; } .fb-chatbox-header .fb-actions button:hover { background: rgba(255,255,255,0.32); } .fb-chatbox-body { display: flex; flex-direction: column; height: 400px; } .fb-chatbox.minimized .fb-chatbox-body { display: none; } .fb-chatbox-messages { flex: 1; overflow-y: auto; padding: 10px 12px; display: flex; flex-direction: column; gap: 8px; background: #f8fafc; } .fb-chatbox-inputrow { padding: 8px 10px; border-top: 1px solid #f1f5f9; display: flex; gap: 6px; background: #fff; } .fb-chatbox-inputrow input { flex: 1; padding: 8px 12px; border: 1px solid #d1d5db; border-radius: 18px; font-size: 13px; } .fb-chatbox-inputrow button { border: none; background: var(--primary); color: #fff; width: 34px; height: 34px; border-radius: 50%; cursor: pointer; font-size: 14px; flex-shrink: 0; } .fb-chatbox-inputrow button:hover { opacity: 0.9; } .role-chip { font-size: 10px; padding: 2px 8px; border-radius: 10px; background: var(--amber); color: #fff; font-weight: 700; text-transform: uppercase; } /* ==== Hàng 1 tin nhắn trong cửa sổ chat nổi: avatar (chỉ đoạn chat riêng - DIRECT) + bong bóng nội dung + giờ gửi. Nhóm lớp (GROUP) không có avatar ở đây - giữ nguyên kiểu hiển thị cũ (chỉ tên người gửi dạng chữ). ==== */ .fb-msg-row { display: flex; align-items: flex-end; gap: 6px; max-width: 100%; } .fb-msg-row.mine { justify-content: flex-end; } .fb-msg-col { display: flex; flex-direction: column; max-width: 80%; gap: 3px; } .fb-msg-avatar { width: 22px; height: 22px; border-radius: 50%; background: var(--amber, #f59e0b); color: #1e293b; font-size: 10px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0; overflow: hidden; } .fb-msg-avatar img { width: 100%; height: 100%; object-fit: cover; } /* ==== Chấm tròn trạng thái Online/Offline - dùng CHUNG toàn hệ thống (classrooms.html, Bong bóng chat nổi...) ==== */ .status-dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; } .status-dot.online { background: #16a34a; box-shadow: 0 0 0 2px rgba(22,163,74,0.15); } .status-dot.offline { background: #9ca3af; } /* ==== Nút tròn nổi (FAB) góc dưới-phải: điểm truy cập DUY NHẤT, LUÔN hiển thị trên mọi trang đã đăng nhập, gộp chung "Ai đang online" (nhắn nhanh) + "Đoạn chat" (lịch sử) - giống bong bóng Messenger của Facebook. ==== */ .fb-fab-btn { position: fixed; bottom: 20px; right: 24px; width: 56px; height: 56px; border-radius: 50%; background: var(--primary); color: #fff; border: none; cursor: pointer; font-size: 24px; z-index: 1040; box-shadow: 0 6px 18px rgba(0,0,0,0.25); display: flex; align-items: center; justify-content: center; transition: transform 0.15s; padding: 0; } .fb-fab-btn:hover { transform: scale(1.06); } .fb-fab-btn .tb-badge { top: -2px; right: -2px; } .fb-fab-panel { position: fixed; bottom: 88px; right: 24px; width: 320px; max-width: 92vw; max-height: 460px; background: #fff; border-radius: 14px; box-shadow: 0 12px 32px rgba(0,0,0,0.22); z-index: 1039; overflow: hidden; display: flex; flex-direction: column; } .fb-fab-panel-header { background: var(--primary); color: #fff; padding: 12px 14px; font-size: 14px; font-weight: 700; flex-shrink: 0; display: flex; align-items: center; justify-content: space-between; gap: 8px; } .fb-fab-panel-close { background: rgba(255,255,255,0.15); border: none; color: #fff; width: 22px; height: 22px; border-radius: 4px; cursor: pointer; font-size: 12px; line-height: 1; flex-shrink: 0; } .fb-fab-panel-close:hover { background: rgba(255,255,255,0.32); } .fb-fab-panel-tabs { display: flex; border-bottom: 1px solid var(--border, #e5e7eb); flex-shrink: 0; } .fb-fab-panel-tabs button { flex: 1; border: none; background: none; padding: 10px; font-size: 12px; font-weight: 600; color: #9ca3af; cursor: pointer; border-bottom: 2px solid transparent; } .fb-fab-panel-tabs button.active { color: var(--primary); border-bottom-color: var(--primary); } .fb-fab-panel-body { flex: 1; overflow-y: auto; } .fb-fab-list-item { display: flex; align-items: center; gap: 10px; padding: 10px 14px; cursor: pointer; } .fb-fab-list-item:hover { background: #f1f5f9; } .fb-fab-avatar { width: 34px; height: 34px; border-radius: 50%; background: var(--amber, #f59e0b); color: #1e293b; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 13px; flex-shrink: 0; position: relative; overflow: hidden; } .fb-fab-avatar img { width: 100%; height: 100%; object-fit: cover; } .fb-fab-avatar .status-dot { position: absolute; bottom: -1px; right: -1px; border: 2px solid #fff; } .fb-fab-list-item .fb-fab-info { min-width: 0; flex: 1; overflow: hidden; } .fb-fab-list-item .fb-fab-name { font-size: 13px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; } .fb-fab-list-item .fb-fab-sub { font-size: 11px; color: #9ca3af; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; } .fb-fab-empty { padding: 28px 14px; text-align: center; font-size: 12px; color: #9ca3af; } .app-nav { background: #fff; border-bottom: 1px solid var(--border); display: flex; gap: 4px; padding: 0 20px; overflow-x: auto; } .app-nav-link { display: inline-block; padding: 12px 16px; font-size: 13px; color: #4b5563; text-decoration: none; border-bottom: 3px solid transparent; white-space: nowrap; } .app-nav-link:hover { color: var(--navy-light); } .app-nav-link.active { color: var(--navy-light); border-bottom-color: var(--navy-light); font-weight: 600; } /* ---------- LAYOUT ---------- */ /* FIX #1: margin cố định 2 bên (32px) làm nội dung KHÔNG được căn giữa phần không gian còn lại sau khi body.has-sidebar đẩy nội dung sang phải bằng padding-left -> Heading/card bị dồn sát lề trái, mất cân đối 2 bên. Đổi sang margin: auto để container luôn tự căn giữa vùng làm việc. */ .container { max-width: 1400px; margin: 24px auto; padding: 0 24px; } .card { background: #fff; border-radius: 12px; padding: 20px; margin-bottom: 16px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); } .stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; margin-bottom: 20px; } .stat-card { background: #fff; border-radius: 12px; padding: 18px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); text-align: center; } .stat-card .value { font-size: 28px; font-weight: 800; color: var(--navy-light); } .stat-card .label { font-size: 12px; color: #6b7280; margin-top: 4px; } .simple-table { width: 100%; border-collapse: collapse; table-layout: auto; } .simple-table th { text-align: left; font-size: 12px; color: #6b7280; padding: 10px 8px; border-bottom: 2px solid var(--bg-alt); } .simple-table td { padding: 10px 8px; font-size: 13px; border-bottom: 1px solid var(--bg-alt); } .simple-table tr:hover td { background: var(--bg-alt); } .simple-table td.col-class { max-width: 180px; white-space: normal; line-height: 1.35; } .action-cell { display: flex; gap: 4px; white-space: nowrap; flex-wrap: wrap; } .filter-bar { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; } .filter-bar select, .filter-bar input { padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; } .empty-state { text-align: center; padding: 40px 20px; color: #9ca3af; font-size: 13px; } .status-badge { padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 600; } .status-badge.open { background: #dcfce7; color: var(--success); } .status-badge.closed { background: #fee2e2; color: var(--danger); } .status-badge.not_open_yet { background: #fef3c7; color: #b45309; } .status-badge.inactive { background: #f1f5f9; color: #9ca3af; } .exam-list-item { display: flex; justify-content: space-between; align-items: center; padding: 14px 0; border-bottom: 1px solid var(--bg-alt); flex-wrap: wrap; gap: 10px; } .exam-list-item:last-child { border-bottom: none; } .exam-list-item .info h3 { margin: 0 0 4px; font-size: 15px; } .exam-list-item .info span { font-size: 12px; color: #6b7280; } .switch { position: relative; display: inline-block; width: 44px; height: 24px; flex-shrink: 0; } .switch input { opacity: 0; width: 0; height: 0; } .slider { position: absolute; cursor: pointer; inset: 0; background-color: #d1d5db; border-radius: 24px; transition: 0.2s; } .slider::before { position: absolute; content: ''; height: 18px; width: 18px; left: 3px; bottom: 3px; background-color: #fff; border-radius: 50%; transition: 0.2s; } .switch input:checked + .slider { background-color: var(--success); } .switch input:checked + .slider::before { transform: translateX(20px); } .toggle-row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; padding: 16px 0; border-bottom: 1px solid var(--bg-alt); } .toggle-row:last-child { border-bottom: none; } .toggle-row .toggle-info h4 { margin: 0 0 4px; font-size: 14px; } .toggle-row .toggle-info p { margin: 0; font-size: 12px; color: #6b7280; } /* FIX #3: đã gộp .detail-table thành MỘT định nghĩa duy nhất (xem khối "DETAIL TABLE — chuẩn hoá" phía dưới) để tránh 3 rule .detail-table chồng chéo/ghi đè nhau gây co dãn cột bất thường & rớt dòng từng chữ. */ .badge { padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; } .badge.correct { background: #dcfce7; color: var(--success); } .badge.wrong { background: #fee2e2; color: var(--danger); } .badge.empty { background: var(--bg-alt); color: #9ca3af; } .qtype-tag { display: inline-block; font-size: 10px; padding: 2px 6px; border-radius: 4px; background: #e0f2fe; color: var(--navy); margin-left: 6px; font-weight: 600; } .result-score { text-align: center; padding: 30px 0; } .result-score .big-score { font-size: 56px; font-weight: 800; color: var(--navy-light); } .result-score .sub { color: #6b7280; font-size: 14px; } /* ======================================================= PHÒNG THI - Phiếu trả lời trắc nghiệm (gọn, giống mockup) ======================================================= */ .exam-topbar { background: var(--navy); color: #fff; padding: 10px 20px; display: flex; justify-content: space-between; align-items: center; position: sticky; top: 0; z-index: 10; } .exam-topbar .exam-name { font-size: 14px; font-weight: 600; } .timer-box { background: rgba(255,255,255,0.15); padding: 6px 14px; border-radius: 8px; font-weight: 700; font-size: 16px; letter-spacing: 1px; color: var(--amber); } .timer-box.warning { background: var(--danger); color: #fff; animation: pulse 1s infinite; } @keyframes pulse { 0%{opacity:1;} 50%{opacity:0.6;} 100%{opacity:1;} } .exam-split { display: flex; height: calc(100vh - 52px - 40px); } .exam-view-toolbar { background: #1e293b; display: flex; gap: 8px; padding: 6px 14px; justify-content: center; flex-wrap: wrap; position: sticky; top: 52px; z-index: 9; } .exam-view-toolbar button { display: inline-flex; align-items: center; justify-content: center; gap: 6px; background: #334155; color: #fff; border: none; border-radius: 6px; padding: 7px 12px; font-size: 12px; cursor: pointer; font-weight: 600; white-space: nowrap; } .exam-view-toolbar button:hover { background: #475569; } .exam-view-toolbar button.active { background: var(--navy-light); } .exam-view-toolbar button .btn-icon { flex-shrink: 0; } .split-resizer { width: 6px; cursor: col-resize; background: var(--border); flex-shrink: 0; touch-action: none; } .split-resizer:hover, .split-resizer.dragging { background: var(--navy-light); } @media (hover: none) { .split-resizer { width: 16px; } } .exam-split.view-pdf-only .answer-pane, .exam-split.view-pdf-only .split-resizer { display: none; } .exam-split.view-pdf-only .pdf-pane { flex: 1 1 100% !important; } .exam-split.view-sheet-only .pdf-pane, .exam-split.view-sheet-only .split-resizer { display: none; } .exam-split.view-sheet-only .answer-pane { flex: 1 1 100% !important; } .pdf-pane { flex: 1.3; border-right: 2px solid var(--border); background: #525659; display: flex; flex-direction: column; } .pdf-toolbar { background: #323639; color: #fff; padding: 8px 14px; display: flex; align-items: center; justify-content: center; gap: 18px; font-size: 13px; flex-wrap: wrap; } .pdf-btn { background: #4b5054; color: #fff; border: none; border-radius: 6px; padding: 5px 12px; cursor: pointer; font-size: 13px; } .pdf-btn:hover { background: #5c6266; } .pdf-page-info, .pdf-zoom-group { display: flex; align-items: center; gap: 6px; } .pdf-page-info input { width: 44px; text-align: center; border-radius: 4px; border: none; padding: 3px; } .pdf-canvas-wrap { flex: 1; overflow: auto; display: flex; justify-content: center; padding: 16px; } .pdf-canvas-wrap canvas { background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.4); } .pdf-loading { color: #fff; text-align: center; padding: 20px; font-size: 13px; } .answer-pane { flex: 1; overflow-y: auto; padding: 18px 20px; background: #fff; display: flex; flex-direction: column; } .answer-pane-header h3 { font-size: 16px; margin: 0 0 6px; color: var(--text); } .answer-progress-row { display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: #6b7280; margin-bottom: 6px; } .answer-progress-row .pct { color: var(--navy-light); font-weight: 700; } .progress-bar-track { height: 6px; background: var(--bg-alt); border-radius: 3px; overflow: hidden; margin-bottom: 14px; } .progress-bar-fill { height: 100%; background: var(--navy-light); border-radius: 3px; transition: width 0.2s; } .answer-scroll { flex: 1; overflow-y: auto; padding-right: 4px; } .section-block { margin-bottom: 20px; } .section-title { font-size: 14px; font-weight: 800; color: var(--text); margin: 0 0 2px; letter-spacing: 0.3px; } .section-subtitle { font-size: 12px; color: #6b7280; margin: 0 0 6px; } .section-underline { height: 2px; background: var(--navy-light); margin-bottom: 14px; } .q-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 24px; } /* Câu trắc nghiệm - nút tròn */ .mc-question-row { display: flex; align-items: center; justify-content: space-between; padding: 6px 0; } .mc-question-row .q-label { font-size: 13px; font-weight: 600; color: var(--text); } .mc-options-round { display: flex; gap: 8px; } .mc-round-btn { width: 34px; height: 34px; border-radius: 50%; border: 1.5px solid var(--navy-light); background: #fff; color: var(--navy-light); font-size: 13px; font-weight: 700; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: 0.12s; } .mc-round-btn:hover { background: #eff6ff; } .mc-round-btn.selected { background: var(--navy-light); color: #fff; border-color: var(--navy-light); } /* Câu đúng/sai - thẻ card gọn theo mockup */ .tf-question-card { grid-column: span 1; border: 1px solid var(--border); border-radius: 10px; padding: 10px 14px; } .tf-question-card .q-label { font-size: 13px; font-weight: 700; margin-bottom: 6px; } .tf-sub-row { display: flex; align-items: center; justify-content: space-between; padding: 3px 0; font-size: 13px; } .tf-sub-row .sub-label { color: #4b5563; } .tf-btn-group { display: flex; gap: 6px; } .tf-btn { width: 34px; height: 26px; border-radius: 6px; border: 1px solid var(--border); background: #f9fafb; cursor: pointer; font-size: 12px; font-weight: 700; } .tf-btn.sel-d { background: #dcfce7; border-color: var(--success); color: var(--success); } .tf-btn.sel-s { background: #fee2e2; border-color: var(--danger); color: var(--danger); } /* Câu trả lời ngắn */ .sa-question-row { display: flex; align-items: center; justify-content: space-between; padding: 6px 0; } .sa-question-row .q-label { font-size: 13px; font-weight: 600; } .short-answer-input { width: 110px; padding: 7px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; font-weight: 600; text-align: center; } .short-answer-input::placeholder { color: #cbd5e1; font-size: 11px; } .submit-area { margin-top: 14px; padding-top: 10px; border-top: 1px solid var(--bg-alt); } /* ---------- Mockup mode chips (Luyện thi badge...) ---------- */ .mode-badge { font-size: 11px; padding: 3px 10px; border-radius: 20px; background: #fef3c7; color: #b45309; font-weight: 700; } /* ============================================================================================ MODERN SAAS DASHBOARD - SIDEBAR NAVIGATION (thay thế .app-nav thanh ngang cũ) Kiến trúc: #navBar được nav.js "biến hình" thành