*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--primary:#2563eb;--primary-d:#1d4ed8;--success:#16a34a;--warning:#d97706;--danger:#dc2626;--secondary:#64748b;--bg:#f1f5f9;--card:#fff;--border:#e2e8f0;--text:#1e293b;--muted:#64748b;--sw:240px;--th:56px;--r:8px;--sh:0 1px 3px rgba(0,0,0,.12);--shm:0 4px 16px rgba(0,0,0,.12)}
body{font-family:'Segoe UI',system-ui,sans-serif;font-size:14px;color:var(--text);background:var(--bg);line-height:1.5}
a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}
h1,h2,h3,h4{font-weight:600;line-height:1.3}
/* LAYOUT */
.app-layout{display:flex;min-height:100vh}
/* SIDEBAR */
.sidebar{width:var(--sw);background:#1e293b;color:#cbd5e1;display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100;overflow-y:auto;transition:transform .25s}
.sidebar-brand{display:flex;align-items:center;gap:10px;padding:18px 16px;font-size:16px;font-weight:700;color:#fff;border-bottom:1px solid #334155}
.sidebar-brand i{color:#60a5fa;font-size:20px}
.sidebar-user{display:flex;align-items:center;gap:10px;padding:14px 16px;border-bottom:1px solid #334155}
.user-avatar{width:36px;height:36px;border-radius:50%;background:#334155;display:flex;align-items:center;justify-content:center;color:#94a3b8;font-size:16px;flex-shrink:0}
.user-avatar.teacher{background:#1d4ed8;color:#fff}.user-avatar.student{background:#065f46;color:#fff}
.sidebar-nav{flex:1;padding:8px 0}
.sidebar-nav a{display:flex;align-items:center;gap:10px;padding:10px 16px;color:#94a3b8;transition:all .15s;font-size:13.5px;position:relative}
.sidebar-nav a:hover{background:#334155;color:#fff;text-decoration:none}.sidebar-nav a.active{background:#2563eb;color:#fff}
.sidebar-nav a i{width:18px;text-align:center}
.sidebar-group-label {font-size: 10px;font-weight: 700;text-transform: uppercase;letter-spacing: 1px;color: rgba(255,255,255,0.4);padding: 14px 20px 4px;}
.sidebar-divider{border:none;border-top:1px solid #334155;margin:6px 16px}
.sidebar-footer{padding:12px 16px;border-top:1px solid #334155}
.logout-btn{display:flex;align-items:center;gap:8px;color:#f87171;font-size:13px;padding:8px 0}
.logout-btn:hover{color:#fca5a5;text-decoration:none}
.lang-switch-sidebar{display:flex;gap:8px;margin-bottom:8px}
.lang-switch-sidebar a{color:#94a3b8;font-size:12px;padding:2px 8px;border-radius:4px;border:1px solid #475569}
.lang-switch-sidebar a.active{background:#2563eb;color:#fff;border-color:#2563eb}
.notif-badge{display:inline-flex;align-items:center;justify-content:center;background:var(--danger);color:#fff;font-size:10px;min-width:18px;height:18px;border-radius:9px;padding:0 5px;margin-left:auto}
.notif-badge-top{background:var(--danger);color:#fff;font-size:12px;padding:2px 8px;border-radius:12px;margin-right:8px}
/* MAIN */
.main-content{margin-left:var(--sw);flex:1;display:flex;flex-direction:column;min-height:100vh}
.top-bar{height:var(--th);background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 20px;position:sticky;top:0;z-index:50;box-shadow:var(--sh)}
.sidebar-toggle{background:none;border:none;cursor:pointer;font-size:18px;color:var(--secondary);display:none}
.top-bar-right{display:flex;align-items:center;gap:8px}
.content-area{padding:24px;flex:1}
/* PAGE HEADER */
.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;flex-wrap:wrap;gap:10px}
.page-header h1{font-size:20px;display:flex;align-items:center;gap:8px}.page-header h1 i{color:var(--primary)}
/* STATS */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px;margin-bottom:20px}
.stat-card{background:#fff;border-radius:var(--r);padding:16px;display:flex;align-items:center;gap:12px;box-shadow:var(--sh);border-left:4px solid var(--border);transition:transform .15s}
.stat-card:hover{transform:translateY(-2px)}
.stat-card.blue{border-left-color:var(--primary)}.stat-card.green,.stat-card.success{border-left-color:var(--success)}
.stat-card.orange,.stat-card.warning{border-left-color:var(--warning)}.stat-card.danger{border-left-color:var(--danger)}
.stat-icon{font-size:22px;opacity:.7}
.stat-card.blue .stat-icon{color:var(--primary)}.stat-card.green .stat-icon,.stat-card.success .stat-icon{color:var(--success)}
.stat-card.orange .stat-icon,.stat-card.warning .stat-icon{color:var(--warning)}.stat-card.danger .stat-icon{color:var(--danger)}
.stat-number{font-size:22px;font-weight:700;line-height:1}.stat-label{font-size:11px;color:var(--muted);margin-top:3px}
/* CARD */
.card{background:var(--card);border-radius:var(--r);box-shadow:var(--sh);border:1px solid var(--border);margin-bottom:16px}
.card-header{padding:14px 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}
.card-header h3{font-size:14px;display:flex;align-items:center;gap:6px}
.card-body{padding:16px}.card-body.p-0{padding:0}
.card-footer{padding:12px 16px;border-top:1px solid var(--border);background:#f8fafc;border-radius:0 0 var(--r) var(--r)}
.mb-3{margin-bottom:12px!important}.mb-4{margin-bottom:16px!important}.mt-2{margin-top:8px!important}.mt-3{margin-top:12px!important}
/* TABLE */
.table{width:100%;border-collapse:collapse;font-size:13.5px}
.table th{background:#f8fafc;color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.5px;padding:10px 14px;border-bottom:2px solid var(--border);text-align:left}
.table td{padding:10px 14px;border-bottom:1px solid var(--border);vertical-align:middle}
.table tbody tr:hover{background:#f8fafc}.table tbody tr:last-child td{border-bottom:none}
.table.table-sm th,.table.table-sm td{padding:7px 12px}
.table-highlight td{background:#eff6ff;font-weight:600}
/* FORM */
.form-group{margin-bottom:14px}.form-group label{display:block;font-size:12px;font-weight:600;color:var(--muted);margin-bottom:5px}
.form-control{width:100%;padding:8px 12px;border:1px solid var(--border);border-radius:6px;font-size:13.5px;color:var(--text);background:#fff;transition:border-color .15s}
.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,.1)}
.form-control-sm{padding:5px 9px;font-size:13px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-actions{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}
.inline-form{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
/* BTN */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:6px;border:none;font-size:13.5px;font-weight:500;cursor:pointer;transition:all .15s;text-decoration:none!important;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-d);color:#fff}
.btn-success{background:var(--success);color:#fff}.btn-success:hover{background:#15803d;color:#fff}
.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:#b91c1c;color:#fff}
.btn-warning{background:var(--warning);color:#fff}.btn-warning:hover{background:#b45309;color:#fff}
.btn-secondary{background:var(--secondary);color:#fff}
.btn-outline{background:transparent;color:var(--primary);border:1px solid var(--primary)}.btn-outline:hover{background:var(--primary);color:#fff}
.btn-sm{padding:5px 12px;font-size:12.5px}.btn-xs{padding:3px 8px;font-size:12px;border-radius:4px}
.btn-block{width:100%;justify-content:center}
/* BADGE */
.badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:12px;font-size:11px;font-weight:600;white-space:nowrap}
.badge-success{background:#dcfce7;color:#166534}.badge-danger{background:#fee2e2;color:#991b1b}
.badge-warning{background:#fef3c7;color:#92400e}.badge-info{background:#e0f2fe;color:#075985}
.badge-secondary{background:#f1f5f9;color:#475569}.badge-exam{background:#ede9fe;color:#5b21b6}
.badge-cepp{background:#dbeafe;color:#1e40af}.badge-vepp{background:#fce7f3;color:#9d174d}
.badge-fall{background:#fef3c7;color:#92400e}.badge-spring{background:#d1fae5;color:#065f46}
/* GRADE CHIP */
.grade-chip{display:inline-flex;align-items:center;justify-content:center;min-width:40px;padding:2px 8px;border-radius:20px;font-weight:700;font-size:13px}
.grade-chip.pass{background:#dcfce7;color:#166534}.grade-chip.fail{background:#fee2e2;color:#991b1b}
.grade-chip.small{font-size:11px;min-width:32px;padding:1px 6px}.grade-chip.large{font-size:16px;padding:4px 14px}
/* ATTENDANCE */
.attendance-bar{display:flex;align-items:center;gap:8px}
.attendance-progress{flex:1;height:10px;background:#e2e8f0;border-radius:5px;overflow:hidden}
.attendance-fill{height:100%;border-radius:5px;transition:width .3s}
.attendance-fill.success{background:var(--success)}.attendance-fill.warning{background:var(--warning)}.attendance-fill.danger{background:var(--danger)}
.attendance-text{font-size:12px;font-weight:600;white-space:nowrap}
.attendance-text.success{color:var(--success)}.attendance-text.warning{color:var(--warning)}.attendance-text.danger{color:var(--danger)}
.attendance-badge{display:inline-block;font-size:12px;font-weight:600;padding:1px 8px;border-radius:12px}
.attendance-badge.success{background:#dcfce7;color:#166534}.attendance-badge.warning{background:#fef3c7;color:#92400e}.attendance-badge.danger{background:#fee2e2;color:#991b1b}
/* ALERT */
.alert{display:flex;align-items:flex-start;gap:10px;padding:12px 16px;border-radius:var(--r);margin-bottom:14px;font-size:13.5px;border-left:4px solid}
.alert-success{background:#f0fdf4;border-color:var(--success);color:#166534}
.alert-error{background:#fef2f2;border-color:var(--danger);color:#991b1b}
.alert-warning{background:#fffbeb;border-color:var(--warning);color:#92400e}
.alert-info{background:#f0f9ff;border-color:#0891b2;color:#075985}
/* MODAL */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:200;align-items:center;justify-content:center}
.modal-overlay.active{display:flex}
.modal{background:#fff;border-radius:var(--r);width:100%;max-width:500px;max-height:90vh;overflow-y:auto;box-shadow:var(--shm);animation:slideUp .2s}
.modal-header{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;border-bottom:1px solid var(--border)}
.modal-header h3{font-size:15px}.modal-header button{background:none;border:none;font-size:20px;cursor:pointer;color:var(--muted)}
.modal-body{padding:18px}
@keyframes slideUp{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}
/* FILTER BAR */
.filter-bar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
/* TWO-COL */
.two-col-layout{display:grid;grid-template-columns:220px 1fr;gap:16px}
.sidebar-panel{background:#fff;border-radius:var(--r);border:1px solid var(--border);overflow:hidden}
.sidebar-panel h4{padding:12px 14px;font-size:12px;text-transform:uppercase;color:var(--muted);border-bottom:1px solid var(--border);background:#f8fafc}
.sidebar-item{display:flex;align-items:center;gap:8px;padding:10px 14px;color:var(--text);border-bottom:1px solid var(--border);font-size:13px;transition:background .1s}
.sidebar-item:hover{background:#f1f5f9;text-decoration:none}.sidebar-item.active{background:#eff6ff;color:var(--primary);font-weight:600}
.panel-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;flex-wrap:wrap;gap:8px}
.panel-header h3{font-size:15px;display:flex;align-items:center;gap:8px}
/* EXAM TABS */
.exam-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.exam-tab{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--r);border:1px solid var(--border);color:var(--text);font-size:13px;transition:all .15s}
.exam-tab:hover{border-color:var(--primary);color:var(--primary);text-decoration:none}.exam-tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}
/* ROLE BADGE */
.role-badge{display:inline-block;font-size:11px;font-weight:600;padding:2px 8px;border-radius:12px}
.role-badge.admin{background:#fee2e2;color:#991b1b}.role-badge.teacher{background:#dbeafe;color:#1e40af}.role-badge.student{background:#d1fae5;color:#065f46}
/* ASSIGN */
.assign-row{display:flex;align-items:center;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--border)}
.assign-row:last-of-type{border-bottom:none}
/* PROFILE */
.profile-info{text-align:center;padding:10px 0}.profile-avatar{font-size:48px;margin-bottom:10px}
.profile-info h3{font-size:18px}
/* TRANSCRIPT */
.transcript-header{text-align:center;padding:20px 0 10px;border-bottom:2px solid var(--border);margin-bottom:18px}
.transcript-header h2{font-size:20px;color:var(--primary)}.transcript-header h3{font-size:16px;margin:4px 0}
.transcript-section{background:#fff;border-radius:var(--r);border:1px solid var(--border);padding:14px;margin-bottom:14px}
.transcript-section h4{margin-bottom:10px;font-size:14px}
/* SUMMARY */
.summary-box{display:flex;align-items:center;justify-content:space-between}
.summary-boxes{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:10px}
.summary-box-item{padding:10px 12px;background:#f8fafc;border-radius:var(--r);border:1px solid var(--border)}
.summary-box-item.success{background:#f0fdf4;border-color:#bbf7d0}.summary-box-item.warning{background:#fffbeb;border-color:#fde68a}.summary-box-item.danger{background:#fef2f2;border-color:#fecaca}
.summary-label{font-size:11px;color:var(--muted);margin-bottom:4px}.summary-value{font-weight:600;font-size:14px}
/* EMPTY */
.empty-state{text-align:center;padding:48px 24px;color:var(--muted)}.empty-state i{display:block;margin-bottom:12px;opacity:.4}
/* LOGIN */
.login-page{background:linear-gradient(135deg,#1e40af 0%,#1e293b 100%);min-height:100vh;display:flex;align-items:center;justify-content:center}
.login-wrapper{width:100%;max-width:420px;padding:16px}
.login-card{background:#fff;border-radius:12px;box-shadow:var(--shm);padding:32px}
.login-header{text-align:center;margin-bottom:24px}
.login-logo{width:64px;height:64px;background:#eff6ff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:28px;color:var(--primary);margin:0 auto 12px}
.login-header h1{font-size:22px;color:var(--text)}.login-header p{color:var(--muted);font-size:13px}
.login-form .btn-block{margin-top:6px;padding:11px;font-size:15px}
.lang-switch{display:flex;justify-content:center;gap:10px;margin-bottom:18px}
.lang-switch a{color:var(--secondary);padding:3px 10px;border-radius:12px;border:1px solid var(--border);font-size:12px}
.lang-switch a.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.test-users{margin-top:18px;padding:12px;background:#f8fafc;border-radius:var(--r);border:1px dashed var(--border);text-align:center}
/* HELPERS */
.text-center{text-align:center}.text-muted{color:var(--muted)}.text-success{color:var(--success)}.text-warning{color:var(--warning)}.text-danger{color:var(--danger)}.text-sm{font-size:12px}
.d-flex{display:flex}.gap-2{gap:8px}.d-none{display:none!important}
.ml-2{margin-left:8px}.mb-2{margin-bottom:8px}.mb-3{margin-bottom:12px}.mb-4{margin-bottom:16px}
code{background:#f1f5f9;padding:1px 6px;border-radius:4px;font-size:12px}
hr{border:none;border-top:1px solid var(--border);margin:16px 0}
/* OVERLAY */
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:90}
/* PRINT */
@media print{.sidebar,.top-bar,.filter-bar,.btn,.form-actions,.page-header button{display:none!important}.main-content{margin-left:0}.printable{page-break-inside:avoid}body{background:#fff}}
/* RESPONSIVE */
@media(max-width:900px){.sidebar{transform:translateX(-100%)}.sidebar.open{transform:translateX(0)}.sidebar-overlay.active{display:block}.main-content{margin-left:0}.sidebar-toggle{display:block}.two-col-layout{grid-template-columns:1fr}.form-row{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.stats-grid{grid-template-columns:1fr 1fr}.content-area{padding:14px}}