:root{--primary:#0f5f73;--accent:#168675;--bg:#f3f6f9;--card:#fff;--line:#d6e0e8;--text:#17324d;--danger:#b33c3c}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}
.topbar{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;padding:16px;display:flex;align-items:center;gap:12px}
.topbar h1{margin:0 0 4px;font-size:1.45rem}.topbar p{margin:0}.spacer{flex:1}
.nav,.toolbar,.form-row,.section-head,.actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.nav,.toolbar{background:#fff;padding:9px 12px;border-bottom:1px solid var(--line)}
.nav-btn,.btn{border:0;border-radius:8px;padding:9px 11px;background:#e8eef3;color:var(--text);font-weight:700;cursor:pointer}
.nav-btn.active,.btn-primary{background:var(--primary);color:#fff}.btn-accent{background:var(--accent);color:#fff}.btn-danger{background:var(--danger);color:#fff}
input,select,textarea{font:inherit;border:1px solid var(--line);border-radius:8px;padding:8px;background:#fff}
main{padding:12px}.view{display:none}.view.active{display:block}.card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}.pad{padding:12px}
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;margin-bottom:12px}.kpis .card{padding:14px}.kpis strong{display:block;font-size:1.6rem;margin-top:6px}
.scroll{overflow:auto}.month-grid{min-width:850px;display:grid;grid-template-columns:repeat(7,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
.day-head,.day-cell{border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.day-head{padding:8px;text-align:center;background:#eaf2f5;font-weight:700}.day-cell{min-height:125px;padding:5px}.other{background:#f8f9fa;color:#9ca7b0}
.event{padding:5px 6px;margin:3px 0;border-radius:6px;color:#fff;font-size:.8rem;cursor:pointer}.event small{display:block}
.week-grid{min-width:980px;display:grid;grid-template-columns:85px repeat(7,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.week-grid>div{border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.slot{min-height:88px;padding:4px}
table{width:100%;border-collapse:collapse}th,td{padding:8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{background:#eaf2f5}
.modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:50;padding:12px;overflow:auto}.modal.open{display:flex;justify-content:center;align-items:flex-start}.modal-box{width:min(760px,100%);background:#fff;border-radius:14px;padding:15px;margin-top:20px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px}.full{grid-column:1/-1}label{display:block;font-size:.84rem;font-weight:700;margin-bottom:4px}.form-grid input,.form-grid select,.form-grid textarea{width:100%}
.badge{display:inline-block;background:#e8eef3;padding:4px 8px;border-radius:999px;margin:3px;font-size:.82rem}.notice{padding:10px;background:#fff6d8;border:1px solid #eadb92;border-radius:8px;margin-bottom:14px}.hidden{display:none!important}
@media(max-width:700px){.form-grid{grid-template-columns:1fr}.nav,.toolbar{position:static}}
@media print{.topbar,.nav,.toolbar,#dashboardView,#monthView,#studentsView,#settingsView{display:none!important}#weekView{display:block!important}main{padding:0}.card{border:0}.week-grid{min-width:0;font-size:9pt}@page{size:A4 landscape;margin:7mm}}