:root{--c-bg: #0f1117;--c-surface: #1a1d27;--c-surface-2: #232735;--c-surface-3: #2d3142;--c-border: #353949;--c-border-light: #434860;--c-text: #e8eaf0;--c-text-muted: #9097ad;--c-text-dim: #6b7394;--c-primary: #5b8af5;--c-primary-hover: #7aa2ff;--c-primary-bg: rgba(91, 138, 245, .12);--c-success: #4ecb71;--c-success-bg: rgba(78, 203, 113, .12);--c-warning: #f5a623;--c-warning-bg: rgba(245, 166, 35, .12);--c-danger: #f56565;--c-danger-bg: rgba(245, 101, 101, .12);--c-logrado: #4ecb71;--c-logrado-bg: rgba(78, 203, 113, .15);--c-proceso: #f5a623;--c-proceso-bg: rgba(245, 166, 35, .15);--c-iniciando: #f56565;--c-iniciando-bg: rgba(245, 101, 101, .15);--font-sans: "DM Sans", system-ui, -apple-system, sans-serif;--font-mono: "JetBrains Mono", monospace;--radius-sm: 6px;--radius: 10px;--radius-lg: 16px;--radius-xl: 24px;--shadow-sm: 0 1px 3px rgba(0,0,0,.3);--shadow: 0 4px 12px rgba(0,0,0,.25);--shadow-lg: 0 8px 30px rgba(0,0,0,.35)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background:var(--c-bg);color:var(--c-text);line-height:1.6;-webkit-font-smoothing:antialiased;min-height:100vh}a{color:var(--c-primary);text-decoration:none}a:hover{color:var(--c-primary-hover)}.app-layout{display:grid;grid-template-columns:260px 1fr;min-height:100vh}.main-content{padding:32px 40px;overflow-y:auto;max-height:100vh}.sidebar{background:var(--c-surface);border-right:1px solid var(--c-border);padding:24px 0;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.sidebar-brand{padding:0 24px 24px;border-bottom:1px solid var(--c-border);margin-bottom:16px}.sidebar-brand h1{font-size:15px;font-weight:700;letter-spacing:-.02em;color:var(--c-text);line-height:1.3}.sidebar-brand .brand-sub{font-size:11px;color:var(--c-text-dim);margin-top:4px;text-transform:uppercase;letter-spacing:.08em}.sidebar-nav{flex:1;padding:0 12px}.sidebar-section{margin-bottom:24px}.sidebar-section-title{font-size:10px;text-transform:uppercase;letter-spacing:.1em;color:var(--c-text-dim);padding:0 12px;margin-bottom:8px;font-weight:600}.nav-link{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius-sm);color:var(--c-text-muted);font-size:14px;font-weight:500;transition:all .15s ease;cursor:pointer;border:none;background:none;width:100%;text-align:left}.nav-link:hover{background:var(--c-surface-2);color:var(--c-text)}.nav-link.active{background:var(--c-primary-bg);color:var(--c-primary)}.nav-link .nav-icon{font-size:18px;width:22px;text-align:center}.sidebar-footer{padding:16px 24px;border-top:1px solid var(--c-border)}.sidebar-user{display:flex;align-items:center;gap:12px}.sidebar-user-avatar{width:36px;height:36px;border-radius:50%;background:var(--c-primary-bg);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700}.sidebar-user-info{flex:1;min-width:0}.sidebar-user-name{font-size:13px;font-weight:600;color:var(--c-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-user-role{font-size:11px;color:var(--c-text-dim);text-transform:capitalize}.card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);padding:24px}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.card-title{font-size:16px;font-weight:600;color:var(--c-text)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:32px}.stat-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);padding:20px 24px}.stat-label{font-size:12px;color:var(--c-text-dim);text-transform:uppercase;letter-spacing:.06em;margin-bottom:8px}.stat-value{font-size:28px;font-weight:700;color:var(--c-text);font-family:var(--font-mono)}.stat-value.primary{color:var(--c-primary)}.stat-value.success{color:var(--c-success)}.stat-value.warning{color:var(--c-warning)}.data-table{width:100%;border-collapse:separate;border-spacing:0}.data-table th{text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--c-text-dim);padding:12px 16px;border-bottom:1px solid var(--c-border);font-weight:600}.data-table td{padding:14px 16px;border-bottom:1px solid var(--c-border);font-size:14px;color:var(--c-text-muted)}.data-table tr:hover td{background:var(--c-surface-2);color:var(--c-text)}.data-table tr:last-child td{border-bottom:none}.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:var(--radius-sm);font-family:var(--font-sans);font-size:14px;font-weight:600;border:none;cursor:pointer;transition:all .15s ease}.btn-primary{background:var(--c-primary);color:#fff}.btn-primary:hover{background:var(--c-primary-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-ghost{background:transparent;color:var(--c-text-muted);border:1px solid var(--c-border)}.btn-ghost:hover{background:var(--c-surface-2);color:var(--c-text)}.btn-danger{background:var(--c-danger-bg);color:var(--c-danger);border:1px solid rgba(245,101,101,.2)}.btn-danger:hover{background:#f5656533}.btn-sm{padding:6px 14px;font-size:13px}.btn-lg{padding:14px 28px;font-size:16px}.form-group{margin-bottom:20px}.form-label{display:block;font-size:13px;font-weight:500;color:var(--c-text-muted);margin-bottom:6px}.form-input{width:100%;padding:12px 16px;background:var(--c-surface-2);border:1px solid var(--c-border);border-radius:var(--radius-sm);color:var(--c-text);font-family:var(--font-sans);font-size:15px;transition:border-color .15s;outline:none}.form-input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px var(--c-primary-bg)}.form-input::placeholder{color:var(--c-text-dim)}.eval-chip{display:inline-flex;align-items:center;justify-content:center;padding:4px 14px;border-radius:20px;font-size:12px;font-weight:700;cursor:pointer;transition:all .15s;border:2px solid transparent;-webkit-user-select:none;user-select:none}.eval-chip.L{background:var(--c-logrado-bg);color:var(--c-logrado)}.eval-chip.L.active{border-color:var(--c-logrado);background:#4ecb7140}.eval-chip.EP{background:var(--c-proceso-bg);color:var(--c-proceso)}.eval-chip.EP.active{border-color:var(--c-proceso);background:#f5a62340}.eval-chip.I{background:var(--c-iniciando-bg);color:var(--c-iniciando)}.eval-chip.I.active{border-color:var(--c-iniciando);background:#f5656540}.eval-chips{display:flex;gap:6px}.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:600}.badge-success{background:var(--c-success-bg);color:var(--c-success)}.badge-warning{background:var(--c-warning-bg);color:var(--c-warning)}.badge-danger{background:var(--c-danger-bg);color:var(--c-danger)}.badge-primary{background:var(--c-primary-bg);color:var(--c-primary)}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--c-bg);position:relative;overflow:hidden}.login-page:before{content:"";position:absolute;width:600px;height:600px;background:radial-gradient(circle,rgba(91,138,245,.08),transparent 70%);top:-200px;right:-100px;pointer-events:none}.login-card{width:100%;max-width:420px;background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-lg);padding:48px 40px;box-shadow:var(--shadow-lg);position:relative}.login-logo{text-align:center;margin-bottom:36px}.login-logo h1{font-size:22px;font-weight:700;color:var(--c-text);letter-spacing:-.02em;margin-bottom:6px}.login-logo p{font-size:13px;color:var(--c-text-dim)}.login-error{background:var(--c-danger-bg);border:1px solid rgba(245,101,101,.2);color:var(--c-danger);padding:12px 16px;border-radius:var(--radius-sm);font-size:13px;margin-bottom:20px}.page-header{margin-bottom:32px}.page-header h2{font-size:24px;font-weight:700;color:var(--c-text);letter-spacing:-.02em}.page-header p{font-size:14px;color:var(--c-text-muted);margin-top:4px}.aula-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}.aula-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);padding:20px;cursor:pointer;transition:all .2s}.aula-card:hover{border-color:var(--c-primary);box-shadow:0 0 0 1px var(--c-primary),var(--shadow);transform:translateY(-2px)}.aula-card-name{font-size:16px;font-weight:600;color:var(--c-text);margin-bottom:4px}.aula-card-detail{font-size:13px;color:var(--c-text-dim)}.aula-card-stats{display:flex;gap:12px;margin-top:12px;padding-top:12px;border-top:1px solid var(--c-border)}.student-list{display:flex;flex-direction:column;gap:4px}.student-row{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:var(--radius-sm);cursor:pointer;transition:background .1s}.student-row:hover{background:var(--c-surface-2)}.student-row.active{background:var(--c-primary-bg);border-left:3px solid var(--c-primary)}.student-avatar{width:36px;height:36px;border-radius:50%;background:var(--c-surface-3);color:var(--c-text-muted);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0}.student-name{font-size:14px;font-weight:500;color:var(--c-text)}.indicator-section{margin-bottom:28px}.indicator-section-title{font-size:14px;font-weight:700;color:var(--c-primary);margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid var(--c-border)}.indicator-row{display:flex;align-items:flex-start;gap:16px;padding:10px 0;border-bottom:1px solid rgba(53,57,73,.5)}.indicator-text{flex:1;font-size:13px;color:var(--c-text-muted);line-height:1.5}.toast{position:fixed;bottom:24px;right:24px;padding:14px 24px;border-radius:var(--radius);font-size:14px;font-weight:500;box-shadow:var(--shadow-lg);z-index:9999;animation:slideInUp .3s ease}.toast.success{background:var(--c-success);color:#fff}.toast.error{background:var(--c-danger);color:#fff}@keyframes slideInUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.spinner{width:32px;height:32px;border:3px solid var(--c-border);border-top-color:var(--c-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-center{display:flex;align-items:center;justify-content:center;padding:60px}@media(max-width:768px){.app-layout{grid-template-columns:1fr}.sidebar{display:none}.main-content{padding:20px}.stats-grid{grid-template-columns:repeat(2,1fr)}}