:root{
  --cian:#01ADAC; --cian-d:#018f8e; --ink:#1e293b; --muted:#64748b;
  --line:#e2e8f0; --bg:#f1f5f9; --card:#fff; --danger:#dc2626; --warn:#f59e0b;
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.5}
a{color:var(--cian);text-decoration:none}
h1{font-size:24px;margin:0 0 4px}
h2{font-size:17px;margin:0 0 12px;color:var(--cian-d)}
code{font-family:ui-monospace,Menlo,monospace;font-size:.85em}
.muted{color:var(--muted)} .sm{font-size:13px} .mt{margin-top:14px}

/* Topbar */
.topbar{background:var(--cian);color:#fff;padding:0 20px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap}
.brand{color:#fff;font-weight:700;font-size:18px;padding:14px 0;letter-spacing:.3px}
.brand span{font-weight:400;opacity:.85}
.topbar nav{display:flex;gap:4px;flex-wrap:wrap}
.topbar nav a{color:#fff;padding:14px 12px;border-radius:8px 8px 0 0;opacity:.9;font-size:14px}
.topbar nav a:hover{background:rgba(255,255,255,.15);opacity:1}
.topbar nav .logout{opacity:.7}

.wrap{max-width:1080px;margin:22px auto;padding:0 16px}
.page-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:16px;gap:12px;flex-wrap:wrap}

/* Panels */
.panel{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;margin-bottom:16px}
.panel.warn{border-color:#fde68a;background:#fffbeb}
.panel.danger,.panel.danger h2{border-color:#fecaca}
.panel.danger{background:#fef2f2}

/* Stats */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px;margin-bottom:18px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;display:block}
.stat-num{font-size:28px;font-weight:700}
.stat-lbl{font-size:13px;color:var(--muted)}

/* Tables */
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th{text-align:left;color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.4px;padding:8px 10px;border-bottom:2px solid var(--line)}
.tbl td{padding:10px;border-bottom:1px solid var(--line);vertical-align:middle}
.tbl tr:hover td{background:#f8fafc}

/* Badges */
.badge{color:#fff;padding:3px 9px;border-radius:20px;font-size:12px;font-weight:600;display:inline-block;white-space:nowrap}
.badge-lg{padding:6px 14px;font-size:14px}

/* Buttons */
.btn{display:inline-block;border:1px solid var(--line);background:#fff;color:var(--ink);padding:9px 16px;border-radius:9px;font-size:14px;cursor:pointer;font-weight:500;text-align:center}
.btn:hover{border-color:var(--cian);color:var(--cian-d)}
.btn-primary{background:var(--cian);border-color:var(--cian);color:#fff}
.btn-primary:hover{background:var(--cian-d);color:#fff}
.btn-ghost{background:transparent}
.btn-sm{padding:5px 11px;font-size:13px}
.btn-lg{padding:13px 22px;font-size:16px}
.btn-block{display:block;width:100%;margin-top:8px}

/* Forms */
label{display:block;font-size:13px;font-weight:600;color:#334155;margin-bottom:10px}
input,select,textarea{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:9px;font-size:14px;font-family:inherit;margin-top:4px;background:#fff}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--cian);box-shadow:0 0 0 3px rgba(1,173,172,.15)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-grid .full{grid-column:1/-1}
.check{display:flex;align-items:center;gap:8px;font-weight:400}
.check input{width:auto;margin:0}
.check.big{align-items:flex-start;background:#f8fafc;border:1px solid var(--line);padding:12px;border-radius:10px;margin-bottom:10px}
.check.big span{font-size:13.5px}
.checks{display:flex;flex-wrap:wrap;gap:14px;margin-top:6px}
.filtros{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;margin-bottom:16px}
.filtros label{margin:0}
.inline-form{display:flex;gap:8px;align-items:center;margin-top:8px;flex-wrap:wrap}
.inline-form select{width:auto}

/* Two columns */
.cols{display:grid;grid-template-columns:1fr 340px;gap:16px}
@media(max-width:840px){.cols{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}}

/* Key-value */
.kv{display:grid;grid-template-columns:1fr 1fr;gap:8px 18px;font-size:14px}
.kv>div{border-bottom:1px dashed var(--line);padding-bottom:5px}
.kv span{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.4px;color:var(--muted)}
details{margin-top:12px} summary{cursor:pointer;font-weight:600;color:var(--cian-d)}

/* Oferta cards */
.oferta-card{border:1px solid var(--line);border-radius:10px;padding:12px;margin-bottom:10px;background:#f8fafc}
.oferta-head{display:flex;justify-content:space-between;flex-wrap:wrap;gap:6px;margin-bottom:4px}

/* Timeline */
.timeline{list-style:none;margin:0;padding:0;font-size:13px}
.timeline li{border-left:2px solid var(--line);padding:0 0 12px 14px;position:relative}
.timeline li:before{content:'';position:absolute;left:-5px;top:4px;width:8px;height:8px;border-radius:50%;background:var(--cian)}
.tl-date{display:block;font-size:11px;color:var(--muted)}
.timeline li.tl-firma:before{background:#10b981}
.timeline li.tl-oferta:before{background:var(--warn)}
.timeline li.tl-respuesta:before{background:#6366f1}
.timeline li.tl-estado:before{background:var(--cian)}

/* Flash */
.flash{padding:11px 15px;border-radius:10px;margin-bottom:12px;font-size:14px}
.flash-ok{background:#ecfdf5;color:#065f46;border:1px solid #a7f3d0}
.flash-err{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}
.code{background:#0f172a;color:#e2e8f0;padding:14px;border-radius:10px;font-size:12.5px;overflow-x:auto;white-space:pre-wrap}

/* Resumen por meses */
.mesbar{display:grid;grid-template-columns:repeat(13,1fr);gap:6px}
@media(max-width:760px){.mesbar{grid-template-columns:repeat(7,1fr)}}
@media(max-width:480px){.mesbar{grid-template-columns:repeat(4,1fr)}}
.mes-chip{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:8px 4px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--ink);text-align:center}
.mes-chip:hover{border-color:var(--cian)}
.mes-chip.on{background:var(--cian);border-color:var(--cian);color:#fff}
.mes-chip.mes-empty{opacity:.5}
.mes-n{font-size:18px;font-weight:700;line-height:1}
.mes-l{font-size:11px;margin-top:2px}

/* Paginación */
.pager{display:flex;align-items:center;justify-content:center;gap:16px;margin:16px 0}
.btn-disabled{opacity:.4;pointer-events:none}

/* Board (tablero) */
.board{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;align-items:start}
@media(max-width:900px){.board{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.board{grid-template-columns:1fr}}
.board-col{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.board-head{padding:12px 14px;font-weight:700;font-size:14px;display:flex;align-items:center;gap:8px;background:#fafcfd}
.board-head .count{margin-left:auto;background:#e2e8f0;color:#475569;border-radius:20px;padding:1px 9px;font-size:12px}
.board-head .dot{width:10px;height:10px;border-radius:50%}
.board-body{padding:10px;display:flex;flex-direction:column;gap:8px;min-height:40px}
.card-solic{display:flex;flex-direction:column;gap:2px;background:#f8fafc;border:1px solid var(--line);border-radius:9px;padding:10px 12px;color:var(--ink)}
.card-solic:hover{background:#fff;border-color:var(--cian)}
.card-solic .card-foot{display:flex;justify-content:space-between;align-items:center;gap:6px;margin-top:4px}
.badge.sm{font-size:10.5px;padding:2px 7px}

/* Login */
.centered{display:flex;align-items:center;justify-content:center;min-height:100vh}
.card-login{background:#fff;border:1px solid var(--line);border-radius:16px;padding:34px;width:340px;box-shadow:0 8px 30px rgba(0,0,0,.06)}
.login-title{color:var(--cian);text-align:center}.login-title span{font-weight:400;color:var(--muted)}

/* ---------- Público (alumno) ---------- */
.publico{background:#f8fafc}
.pub-header{background:var(--cian);color:#fff;padding:16px 20px}
.pub-header-inner{max-width:760px;margin:0 auto;display:flex;flex-direction:column}
.pub-header-inner strong{font-size:18px;letter-spacing:.5px}
.pub-header-inner span{font-size:13px;opacity:.9}
.pub-wrap{max-width:760px;margin:0 auto;padding:20px 16px 60px}
.pub-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;box-shadow:0 4px 20px rgba(0,0,0,.04)}
.pub-card h2{margin-top:26px;padding-top:16px;border-top:1px solid var(--line)}
.pub-footer{text-align:center;color:var(--muted);font-size:12px;margin-top:22px;line-height:1.7}
.aviso{background:#fffbeb;border:1px solid #fde68a;border-radius:10px;padding:13px 15px;font-size:13.5px;margin:16px 0}
.nota-legal{font-size:12.5px;color:var(--muted);background:#f8fafc;border-radius:8px;padding:10px 12px;margin:10px 0}
.vinc{background:var(--danger);color:#fff;font-size:11px;padding:2px 8px;border-radius:20px;vertical-align:middle}
.condiciones{font-size:13px;max-height:280px;overflow-y:auto;border:1px solid var(--line);border-radius:10px;padding:6px 16px;background:#f8fafc}
.condiciones h3{color:var(--cian-d);font-size:15px}
.firma-box{border:2px dashed var(--cian);border-radius:12px;padding:16px;margin:14px 0;text-align:center}
#sign{border:1px solid var(--line);border-radius:8px;background:#fff;touch-action:none;max-width:100%;margin:6px 0}
.ok-hero{font-size:56px;text-align:center;margin-bottom:6px}
.estado-actual{display:flex;align-items:center;justify-content:space-between;background:#f8fafc;border-radius:10px;padding:14px 16px;margin-top:16px}
.oferta-detalle{margin:14px 0}
.oferta-acciones{margin-top:18px}

.mb{margin-bottom:12px}
/* Barchart seguimiento */
.barchart{display:flex;align-items:flex-end;gap:6px;height:160px;padding-top:10px}
.bar-col{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%}
.bar{width:70%;background:var(--cian);border-radius:4px 4px 0 0;min-height:2px;transition:height .3s}
.bar-v{font-size:11px;color:var(--muted);margin-top:2px}
.bar-l{font-size:11px;color:var(--muted)}

/* Tablas de la hoja de asistencia / fichas de documento */
.ficha-datos{width:100%;border-collapse:collapse;margin:12px 0}
.ficha-datos td{border:1px solid #cbd5e1;padding:7px 10px;font-size:14px}
.ficha-asistencia{width:100%;border-collapse:collapse;margin:12px 0;font-size:13px}
.ficha-asistencia th,.ficha-asistencia td{border:1px solid #cbd5e1;padding:6px;text-align:center}
.ficha-asistencia th{background:#f1f5f9}
.ficha-asistencia td{height:26px}
.ficha-firmas{margin-top:24px}

/* Certificado */
.cert-doc{border:2px solid var(--cian);border-radius:12px;padding:34px 30px;background:#fff}
.cert-logo{text-align:center;color:var(--cian);font-weight:700;letter-spacing:2px;font-size:20px;margin-bottom:18px;padding-bottom:12px;border-bottom:2px solid var(--cian)}
.cert-doc h2{text-align:center;color:var(--cian-d);border:none;margin:0 0 18px;font-size:18px}
.cert-doc p{font-size:15px;line-height:1.8;text-align:justify}
.cert-firma{margin-top:40px;text-align:right;font-size:14px}
@media print{
  .pub-header,.pub-footer,.no-print,.topbar{display:none!important}
  body,.publico{background:#fff}
  .pub-wrap,.pub-card{max-width:none;margin:0;padding:0;box-shadow:none;border:none}
  .cert-doc{border:none}
}