:root{
  --bg:#0d1b2a; --bg2:#0f2439; --panel:#12263a; --border:#0a1624; --txt:#e6eef7; --muted:#9fb3c8;
  --blue:#0b5394; --blue2:#114a82; --ok:#1f6b48; --warn:#735d24; --err:#7a2f2f;
}
*{box-sizing:border-box} html,body{height:100%} body{margin:0;background:linear-gradient(180deg,var(--bg),var(--bg2));color:var(--txt);font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,"Helvetica Neue",Arial;}
.app-shell{display:grid;grid-template-columns:300px 1fr;height:100vh}
.sidebar{background:#0c2035;border-right:1px solid var(--border);padding:14px;display:flex;flex-direction:column}
.brand{display:flex;gap:10px;align-items:center;margin-bottom:10px}
.logo{width:36px;height:36px;border-radius:10px;background:linear-gradient(140deg,#12a3d8,var(--blue));display:grid;place-items:center;color:#fff;font-weight:800;box-shadow:0 2px 10px rgba(0,0,0,.35)}
.brand-text{line-height:1}
.roleTabs{display:grid;grid-template-columns:repeat(2,1fr);gap:6px;margin:10px 0}
.roleTabs button{background:#0e2236;border:1px solid #1a324d;color:#cfe2f3;border-radius:8px;padding:8px;cursor:pointer}
.roleTabs button.active{background:#114a82}
.sede-select,.student-select{margin:10px 0}
.sede-select label,.student-select label{display:block;font-size:12px;color:var(--muted);margin-bottom:4px}
select,input,textarea{width:100%;background:#0e2236;color:var(--txt);border:1px solid var(--border);border-radius:8px;padding:10px}
.menu{display:flex;flex-direction:column;gap:2px;overflow:auto}
.menu-section{margin:14px 4px 6px;color:#cfe2f3;font-size:12px;text-transform:uppercase;letter-spacing:.08em}
.menu-item{display:block;padding:10px;border-radius:8px;color:var(--txt);text-decoration:none}
.menu-item:hover{background:#0d2f52}
.content{display:grid;grid-template-rows:56px 1fr;height:100vh}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:0 16px;background:#062a49;border-bottom:1px solid var(--border)}
.view{padding:16px;overflow:auto;background:linear-gradient(180deg,rgba(20,36,58,.55),rgba(8,18,31,.55))}
.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px;margin-bottom:16px;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.toolbar{display:flex;gap:8px;flex-wrap:wrap}
.btn{display:inline-flex;gap:6px;align-items:center;padding:10px 14px;border-radius:10px;border:1px solid var(--border);background:var(--blue2);color:#e6f2ff;cursor:pointer;font-weight:600}
.btn.secondary{background:#0e2236} .btn.ghost{background:transparent;border-color:#1a324d} .btn.danger{background:#702a2a} .btn.warn{background:#735d24} .btn.success{background:#1f6b48}
.btn.tiny{padding:6px 8px;font-size:12px}
.table{width:100%;border-collapse:collapse;margin-top:8px;background:#0f2236;border-radius:10px;overflow:hidden}
.table th,.table td{padding:10px 12px;border-bottom:1px solid #112a45;font-size:14px;text-align:left}
.table th{background:#0d2134;color:#cfe2f3;position:sticky;top:0}
.kpi{display:flex;gap:12px;flex-wrap:wrap}
.tile{background:#0f2236;border:1px solid var(--border);border-radius:12px;padding:12px 14px;min-width:160px}
.badge{padding:3px 8px;border-radius:40px;font-size:12px;background:#12263a;border:1px solid #1c3857;color:#cfe2f3}
.badge.ok{background:#123a2b;border-color:#1f6b48} .badge.warn{background:#3a3312;border-color:#735d24} .badge.err{background:#3a1512;border-color:#7a2f2f}
.small{font-size:12px;color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(240px,1fr));gap:12px}
label{font-size:12px;color:#a9c1d6;display:block;margin:6px 2px}
hr{border:0;border-top:1px solid #10253c;margin:14px 0}
.errbar{position:fixed;z-index:60;top:8px;left:50%;transform:translateX(-50%);background:#3a1512;border:1px solid #7a2f2f;color:#ffd2d2;padding:10px 16px;border-radius:10px;box-shadow:0 8px 20px rgba(0,0,0,.4)}
/* Modal robusto */
.modal-backdrop[hidden]{display:none !important;}
.modal-backdrop{position:fixed;inset:0;background:rgba(4,12,20,.75);display:grid;place-items:center;z-index:50}
.modal{width:min(1000px,92vw);background:var(--panel);border:1px solid var(--border);border-radius:12px;box-shadow:0 30px 80px rgba(0,0,0,.5);display:flex;flex-direction:column;max-height:90vh;pointer-events:auto}
.modal-header,.modal-footer{padding:10px 12px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.modal-footer{border-top:1px solid var(--border);border-bottom:0}
.modal-body{padding:14px;overflow:auto}
.stepper{display:flex;gap:8px;margin:6px 0}
.step{padding:6px 10px;border-radius:999px;border:1px solid #1a324d;background:#0e2236;font-size:12px}
.step.active{background:#114a82}
.tab{display:inline-flex;gap:8px;background:#0e2236;padding:6px;border-radius:12px;border:1px solid #0a1624}
.tab button{background:transparent;color:#cfe2f3;border:0;padding:8px 12px;border-radius:8px;cursor:pointer}
.tab button.active{background:#114a82}
.footer{margin-top:auto;padding-top:12px;color:#9fb3c8;font-size:12px}
@media (max-width: 1000px){ .app-shell{grid-template-columns:1fr} .form-grid{grid-template-columns:1fr} }