:root{
  --ink:#1c2b22; --ink2:#506058; --paper:#f5f2e8; --card:#ffffff;
  --line:#ddd8c8; --line2:#c4bfae;
  --green:#2d6a4f; --green-bg:#e8f4ee;
  --red:#b03030; --red-bg:#fce8e8;
  --gold:#8a6800; --gold-bg:#fdf3d0;
  --blue:#1a5a8a; --blue-bg:#e2eef8;
  --purple:#6040a0; --purple-bg:#f0ebff;
  --clay:#8a4020; --clay-bg:#faeae0;
  --r:10px; --fs:14px;
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0;}
body{background:var(--paper);color:var(--ink);min-height:100vh;font-size:var(--fs);}
.app{max-width:960px;margin:0 auto;padding:20px 16px 60px;}

/* ---- HEADER ---- */
.hdr h1{font-size:22px;font-weight:800;letter-spacing:-.3px;}
.hdr .sub{font-size:11px;color:var(--ink2);text-transform:uppercase;letter-spacing:.08em;}
.mode-sw{display:flex;gap:5px;}
.mode-sw button{border:1px solid var(--ink);background:transparent;color:var(--ink);
  padding:6px 13px;border-radius:99px;font-size:12px;font-weight:600;cursor:pointer;}
.mode-sw button.on{background:var(--ink);color:#fff;}

/* ---- TABS ---- */
.tabs{display:flex;gap:5px;flex-wrap:wrap;margin-bottom:14px;}
.tab{border:1px solid var(--line2);background:#fff;color:var(--ink);padding:7px 14px;
  border-radius:99px;font-size:13px;font-weight:600;cursor:pointer;}
.tab.on{background:var(--ink);color:#fff;border-color:var(--ink);}
.tab.dashed{border-style:dashed;}
.tab-label{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.07em;
  color:var(--ink2);margin-bottom:5px;}

/* ---- CARDS ---- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin-bottom:14px;}
.card h2{font-size:17px;margin-bottom:4px;}
.card h3{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--ink2);margin:14px 0 6px;}
.muted{color:var(--ink2);font-size:12px;}

/* ---- FORM ---- */
label.lbl{display:block;font-size:11px;font-weight:600;color:var(--ink2);margin:8px 0 3px;}
input,select{width:100%;padding:8px 10px;border:1px solid var(--line2);border-radius:7px;
  font-size:13px;background:#fff;color:var(--ink);font-family:inherit;}
input:focus,select:focus{outline:2px solid var(--green);outline-offset:1px;}
.row{display:flex;gap:10px;flex-wrap:wrap;}
.row>*{flex:1;min-width:130px;}
.frow{display:flex;gap:8px;flex-wrap:wrap;align-items:flex-end;
  padding:12px;background:#faf8f2;border:1px dashed var(--line2);border-radius:8px;margin-bottom:10px;}
.frow>div{display:flex;flex-direction:column;}
.frow label{font-size:10px;font-weight:600;color:var(--ink2);margin-bottom:3px;}
.frow input,.frow select{width:auto;min-width:100px;}
::placeholder{color:#aaa;}

/* ---- BUTTONS ---- */
.btn{display:inline-flex;align-items:center;gap:5px;border:none;border-radius:7px;
  padding:9px 14px;font-size:13px;font-weight:600;cursor:pointer;}
.btn-p{background:var(--green);color:#fff;}
.btn-p:hover{background:#225240;}
.btn-s{background:transparent;color:var(--green);border:1px solid var(--green);}
.btn-s:hover{background:var(--green-bg);}
.btn-d{background:transparent;color:var(--red);border:1px solid var(--red);}
.btn-sm{border:1px solid var(--line2);background:#fff;color:var(--ink);
  padding:4px 9px;font-size:12px;border-radius:6px;cursor:pointer;}
.btn-sm:hover{background:#f0ede4;}
.btn-sm.d{border-color:var(--red);color:var(--red);}
.btn-sm.d:hover{background:var(--red-bg);}

/* ---- TABLE ---- */
table{width:100%;border-collapse:collapse;font-size:13px;}
th,td{text-align:left;padding:7px 9px;border-bottom:1px solid var(--line);}
th{font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--ink2);font-weight:600;}
tr:last-child td{border-bottom:none;}

/* ---- STICKY HEADER ---- */
.hdr{
  position:sticky;top:0;z-index:50;
  background:var(--paper);
  border-bottom:2px solid var(--ink);padding-bottom:12px;margin-bottom:18px;
  display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:8px;
}
/* Pestañas principales sticky */
#mainNav{
  position:sticky;top:62px;z-index:40;
  background:var(--paper);padding:4px 0 8px;
}
/* Barra de asignatura + periodo sticky */
.subject-period-bar{
  position:sticky;top:118px;z-index:30;
  background:var(--paper);padding-bottom:6px;
}
/* Barra superior de scroll + thead sticky */
#topScrollBar{
  position:sticky;top:0;z-index:10;
  background:var(--paper);
}
table.grid thead{position:sticky;top:12px;z-index:9;}
table.grid thead th{
  background:#f0ede4;font-size:10px;font-weight:600;color:var(--ink2);
  text-transform:none;vertical-align:bottom;
  box-shadow:0 1px 0 var(--line);
}

/* ---- GRID (grade/attendance) ---- */
.gw{overflow-x:auto;border:1px solid var(--line);border-radius:8px;}
table.grid{width:auto;min-width:100%;border-collapse:separate;border-spacing:0;font-size:12.5px;}
table.grid th,table.grid td{
  border-bottom:1px solid var(--line);border-right:1px solid var(--line);
  padding:5px 7px;text-align:center;white-space:nowrap;}
table.grid th:last-child,table.grid td:last-child{border-right:none;}
table.grid thead th{background:#f0ede4;font-size:10px;font-weight:600;color:var(--ink2);
  text-transform:none;vertical-align:bottom;}
table.grid td:first-child,table.grid th:first-child{
  text-align:left;position:sticky;left:0;background:#fff;z-index:2;
  min-width:240px;width:240px;white-space:normal;font-weight:500;
  word-break:keep-all;overflow-wrap:break-word;hyphens:none;
  line-height:1.4;vertical-align:middle;padding:6px 10px;}
table.grid thead th:first-child{background:#f0ede4;z-index:3;}
table.grid tbody tr:hover td{background:#faf8f0;}
table.grid tbody tr:hover td:first-child{background:#f3f0e6;}
.ci{width:46px;text-align:center;padding:4px 3px;border:1px solid transparent;
  background:transparent;font-size:12px;border-radius:4px;}
.ci:hover{border-color:var(--line2);}
.ci:focus{border-color:var(--green);background:#fff;outline:none;}
.ci.na{color:var(--ink2);font-style:italic;background:#f0ede4;border-color:transparent;}
.ch-label{font-weight:600;font-size:11px;white-space:normal;max-width:80px;line-height:1.3;}
.ch-sub{font-size:9px;color:var(--ink2);margin-top:2px;}
.ch-actions{display:flex;gap:3px;justify-content:center;margin-top:3px;}
.ch-actions button{border:none;background:none;cursor:pointer;color:var(--ink2);font-size:11px;padding:1px 3px;}
.ch-actions button:hover{color:var(--ink);}
.ch-actions button.d:hover{color:var(--red);}
.cell-def{font-weight:700;background:var(--green-bg);color:var(--green);}

/* ---- ATTENDANCE DOT ---- */
.dot{width:28px;height:28px;border-radius:50%;border:1px solid var(--line2);background:#fff;
  font-size:9px;font-weight:700;cursor:pointer;display:inline-flex;align-items:center;
  justify-content:center;position:relative;user-select:none;}
.dot-pp{position:absolute;bottom:-2px;right:-2px;width:11px;height:11px;border-radius:50%;
  background:#fff;border:1px solid var(--line2);font-size:7px;font-weight:700;
  display:flex;align-items:center;justify-content:center;color:var(--ink2);}
.dot-pp.on{background:var(--clay);border-color:var(--clay);color:#fff;}

/* ---- BADGES ---- */
.badge{display:inline-block;font-size:10px;padding:2px 8px;border-radius:99px;font-weight:600;}
.bg{background:var(--green-bg);color:var(--green);}
.br{background:var(--red-bg);color:var(--red);}
.bb{background:var(--gold-bg);color:var(--gold);}
.bu{background:var(--blue-bg);color:var(--blue);}
.bp{background:var(--purple-bg);color:var(--purple);}
.bc{background:var(--clay-bg);color:var(--clay);}
.bk{background:#ece9de;color:var(--ink2);}

/* ---- MISC ---- */
.empty{text-align:center;padding:26px;color:var(--ink2);font-size:13px;
  border:1px dashed var(--line2);border-radius:8px;}
.topline{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:8px;}
.metrics{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px;}
.metric{background:var(--green-bg);border-radius:8px;padding:10px 14px;flex:1;min-width:100px;}
.metric .num{font-size:22px;font-weight:800;color:var(--green);}
.metric .lab{font-size:11px;color:var(--ink2);margin-top:2px;}
.dropzone{display:block;border:1.5px dashed var(--line2);border-radius:8px;padding:14px;
  text-align:center;color:var(--ink2);font-size:13px;cursor:pointer;background:#faf8f2;}
.dropzone:hover{background:#f3f0e6;}
.dropzone input{display:none;}
.ok{background:var(--green-bg);border-radius:8px;padding:10px 14px;font-size:13px;color:var(--green);margin-top:8px;}
.err{background:var(--red-bg);border-radius:8px;padding:10px 14px;font-size:13px;color:var(--red);margin-top:8px;white-space:pre-line;}
.info-bar{background:var(--green-bg);border-radius:8px;padding:8px 14px;font-size:12px;color:var(--green);margin-bottom:10px;}
.stname{font-size:19px;font-weight:700;}
.stmeta{color:var(--ink2);font-size:12px;margin-top:2px;}

/* ---- STUDENT PHOTO ---- */
.st-avatar{width:42px;height:42px;border-radius:50%;object-fit:cover;border:2px solid var(--line2);cursor:pointer;flex-shrink:0;}
.st-avatar-sm{width:32px;height:32px;border-radius:50%;object-fit:cover;border:1px solid var(--line2);vertical-align:middle;}
.st-avatar-lg{width:72px;height:72px;border-radius:50%;object-fit:cover;border:2px solid var(--line);flex-shrink:0;}
.avatar-placeholder{width:42px;height:42px;border-radius:50%;background:#ece9de;border:2px dashed var(--line2);
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;cursor:pointer;flex-shrink:0;color:var(--ink2);}
.avatar-placeholder-sm{width:32px;height:32px;border-radius:50%;background:#ece9de;border:1px dashed var(--line2);
  display:inline-flex;align-items:center;justify-content:center;font-size:12px;color:var(--ink2);}
.avatar-placeholder-lg{width:72px;height:72px;border-radius:50%;background:#ece9de;border:2px dashed var(--line2);
  display:inline-flex;align-items:center;justify-content:center;font-size:26px;color:var(--ink2);flex-shrink:0;}
input.hidden-file{display:none;}
.modal-wrap{background:rgba(0,0,0,.5);border-radius:8px;padding:20px;margin:12px 0;position:relative;}
.modal-wrap img{max-width:100%;max-height:65vh;border-radius:6px;}
.modal-close{position:absolute;top:8px;right:8px;background:#fff;border:none;border-radius:50%;
  width:28px;height:28px;cursor:pointer;font-size:15px;}

/* ---- INSTALL BANNER ---- */
.install-banner{
  display:none;align-items:center;justify-content:space-between;gap:10px;
  background:var(--green);color:#fff;padding:10px 16px;border-radius:var(--r);
  margin-bottom:14px;font-size:13px;flex-wrap:wrap;
}
.install-banner.show{display:flex;}
.install-banner button{background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.4);
  color:#fff;padding:6px 12px;border-radius:7px;font-size:12px;font-weight:600;cursor:pointer;}
.install-banner button:hover{background:rgba(255,255,255,.35);}
.install-banner .close-btn{background:none;border:none;color:rgba(255,255,255,.7);
  font-size:18px;padding:0 4px;cursor:pointer;line-height:1;}

/* ---- MOBILE ---- */
@media (max-width: 600px){
  .app{padding:12px 10px 80px;}
  .hdr h1{font-size:18px;}
  .hdr .sub{display:none;}
  .mode-sw button{padding:5px 10px;font-size:11px;}

  /* Tabs scroll horizontally */
  .tabs{flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:4px;}
  .tabs::-webkit-scrollbar{height:3px;}
  .tabs::-webkit-scrollbar-thumb{background:var(--line2);border-radius:3px;}
  .tab{white-space:nowrap;font-size:12px;padding:6px 11px;}

  .card{padding:14px 12px;}
  .card h2{font-size:15px;}
  .frow{gap:6px;}
  .frow input,.frow select{font-size:13px;}

  /* Grid: smaller cells */
  table.grid{font-size:11px;}
  table.grid th,table.grid td{padding:4px 5px;}
  table.grid td:first-child,table.grid th:first-child{min-width:130px;max-width:160px;font-size:11px;word-break:break-word;}
  .ch-label{font-size:10px;max-width:60px;}
  .ch-sub{font-size:8px;}
  .ci{width:38px;font-size:11px;padding:3px 2px;}
  .dot{width:26px;height:26px;font-size:9px;}
  .dot-pp{width:10px;height:10px;font-size:6px;}

  /* Metrics stack */
  .metrics{gap:8px;}
  .metric{min-width:80px;padding:10px 12px;}
  .metric .num{font-size:20px;}

  /* Table */
  table{font-size:12px;}
  th,td{padding:6px 7px;}

  /* Student view summary table */
  .year-table{font-size:11px;}
  .year-table th,.year-table td{padding:5px 6px;}

  /* Attendance grid: compress dates */
  .gw{border-radius:6px;}

  /* Bottom nav for mobile */
  .mobile-nav{
    display:flex;position:fixed;bottom:0;left:0;right:0;
    background:var(--card);border-top:1px solid var(--line);
    z-index:100;padding:6px 4px env(safe-area-inset-bottom);
  }
  .mobile-nav a{
    flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;
    color:var(--ink2);font-size:9px;text-transform:uppercase;letter-spacing:.05em;
    cursor:pointer;padding:4px 2px;border-radius:8px;text-decoration:none;
  }
  .mobile-nav a.on{color:var(--green);}
  .mobile-nav a .icon{font-size:20px;line-height:1;}
  /* Hide desktop tab bar on mobile */
  #mainNav .tab:not(.logout-btn){display:none;}
  #mainNav{display:none;}
}
@media (min-width: 601px){
  .mobile-nav{display:none;}
}

/* ---- INDICADOR DE GUARDADO ---- */
#saveStatus{
  position:fixed;bottom:16px;left:50%;transform:translateX(-50%);z-index:999;
  padding:8px 16px;border-radius:99px;font-size:13px;font-weight:600;
  opacity:0;pointer-events:none;transition:opacity .25s;
  box-shadow:0 2px 12px rgba(0,0,0,.22);white-space:nowrap;
}
#saveStatus.show{opacity:1;pointer-events:auto;}
#saveStatus.saving{background:#3a3a3a;color:#fff;}
#saveStatus.ok{background:var(--green);color:#fff;}
#saveStatus.error{background:var(--red);color:#fff;}
#saveStatus button{
  background:rgba(255,255,255,.25);border:1px solid rgba(255,255,255,.5);
  color:#fff;border-radius:99px;padding:3px 10px;font-size:12px;font-weight:600;
  cursor:pointer;margin-left:8px;
}
@media (max-width: 600px){
  #saveStatus{bottom:78px;} /* sobre la barra de navegación móvil */
}

/* ============================================================
   V2.1 — Mejoras visibles
   ============================================================ */
.draggable-course{cursor:grab;}
.draggable-course:active{cursor:grabbing;}
.drop-target{outline:2px dashed var(--green); outline-offset:3px; background:var(--green-bg)!important;}
.draggable-student{cursor:grab;}
.draggable-student:hover td{background:#f3f0e6;}
.v2-stats{margin:12px 0 8px;}
.v2-calendar{display:grid;grid-template-columns:repeat(auto-fill,minmax(145px,1fr));gap:8px;margin-top:10px;}
.v2-day{border:1px solid var(--line);border-radius:8px;background:#faf8f2;padding:10px;display:flex;flex-direction:column;gap:3px;}
.v2-day span{font-size:12px;color:var(--ink2);}
.v2-day small{font-size:11px;color:var(--red);}
body.dark-mode{--paper:#101815;--card:#17221e;--ink:#edf7f2;--ink2:#a9bbb3;--line:#30443b;--line2:#4b6157;background:var(--paper);color:var(--ink);}
body.dark-mode input,body.dark-mode select,body.dark-mode .tab,body.dark-mode .btn-sm{background:#111b17;color:var(--ink);border-color:var(--line2);}
body.dark-mode .card,body.dark-mode table.grid td:first-child{background:var(--card);}
body.dark-mode table.grid thead th,body.dark-mode table.grid thead th:first-child{background:#203028;color:var(--ink2);}
body.dark-mode .frow,body.dark-mode .v2-day{background:#111b17;}
body.dark-mode .hdr{background:var(--paper);}
body.dark-mode #mainNav,body.dark-mode .subject-period-bar,body.dark-mode #topScrollBar{background:var(--paper);}


/* ---- V2.2 mobile visible tools ---- */
.mobile-actions{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px;}
.mobile-order-row{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 0;border-bottom:1px solid var(--line);}
.mobile-order-row:last-child{border-bottom:none;}
.mobile-order-row span{display:flex;gap:6px;}
.mobile-order-row button:disabled{opacity:.35;cursor:not-allowed;}
@media (min-width:701px){.mobile-v2-tools,.mobile-course-order{display:none!important;}}
@media (max-width:700px){
  .mobile-v2-tools{margin-bottom:10px;}
  .mobile-course-order{margin-top:10px;margin-bottom:10px;}
  #studentSearch{width:100%;max-width:100%!important;}
}

/* ============================================================
   V2.3 — Colores, búsqueda global y matrícula por curso
   ============================================================ */
.v23-dashboard{border-top:4px solid var(--green);}
.v23-course-counts{display:grid;grid-template-columns:repeat(auto-fill,minmax(135px,1fr));gap:8px;margin-top:10px;}
.v23-count{border:1px solid var(--line2);border-left:7px solid var(--course-color);background:var(--card);border-radius:10px;padding:10px;text-align:left;cursor:pointer;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:8px;}
.v23-count:hover{background:#faf8f2;transform:translateY(-1px);}
.v23-count span{font-weight:700;font-size:13px;}
.v23-count b{font-size:13px;white-space:nowrap;}
.v23-count.occ-low b{color:var(--green);} .v23-count.occ-mid b{color:var(--gold);} .v23-count.occ-high b{color:var(--red);}
.v23-color-tool{display:flex;align-items:center;gap:6px;border:1px solid var(--line2);border-radius:8px;padding:4px 8px;background:#faf8f2;}
.v23-color-tool label{font-size:11px;color:var(--ink2);font-weight:700;white-space:nowrap;}
.v23-color-tool input[type="color"]{width:32px;height:28px;border:none;padding:0;background:transparent;cursor:pointer;}
.v23-course-chip{display:inline-block;border-left:5px solid var(--course-color);background:#faf8f2;border-radius:99px;padding:3px 8px;font-size:12px;font-weight:700;}
.v23-results td,.v23-results th{vertical-align:middle;}
.v23-highlight td{animation:v23flash 2.5s ease-in-out;}
@keyframes v23flash{0%,100%{background:transparent;}20%,75%{background:var(--gold-bg);}}
body.dark-mode .v23-count, body.dark-mode .v23-color-tool, body.dark-mode .v23-course-chip{background:#111b17;}
body.dark-mode .v23-count:hover{background:#203028;}
@media (max-width:700px){
  .v23-course-counts{grid-template-columns:1fr 1fr;}
  .v23-count{padding:9px 8px;flex-direction:column;align-items:flex-start;}
  .v23-color-tool{width:100%;justify-content:space-between;margin-bottom:6px;}
  #v23GlobalSearch table{font-size:11px;}
  #v23GlobalSearch th:nth-child(3),#v23GlobalSearch td:nth-child(3){display:none;}
}

/* V2.4 — Observador y panel general */
.v24-hero{border-left:5px solid var(--green);}
.v24-general{border-top:5px solid var(--blue);}
.v24-student-card{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;flex-wrap:wrap;margin-top:10px;padding:12px;border:1px solid var(--line);border-radius:8px;background:#faf8f2;}
.v24-mini-metrics{margin-top:0;min-width:320px;}
.v24-alerts{font-weight:700;}
.v24-obs-list{display:grid;gap:8px;margin-top:8px;}
.v24-obs-item{border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:#fff;}
.v24-obs-item p{margin:6px 0 8px;line-height:1.45;}
@media (max-width:600px){
  .v24-mini-metrics{min-width:100%;}
  .v24-student-card{display:block;}
  #obsStudent{width:100%;}
}

/* ---- V2.5 AGENDA Y REPORTES ---- */
.v25-hero{border-top:5px solid var(--blue);}
.v25-actions{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0;}
.v25-table td{vertical-align:top;}
.v25-vencido td{background:var(--red-bg);}
.v25-pendiente td{background:#fff;}
.v25-realizado td{opacity:.75;background:var(--green-bg);}
@media print{
  .hdr,.tabs,.mode-sw,.mobile-nav,#v25ReportTools .v25-actions,#logoutBtn{display:none!important;}
  body{background:#fff;}
  .app{max-width:none;padding:0;}
  .card{box-shadow:none;border:1px solid #bbb;page-break-inside:avoid;}
}
@media (max-width:600px){
  .v25-actions .btn,.v25-actions .btn-s{width:100%;justify-content:center;}
  .v25-table{font-size:11px;}
}


/* V3.0 */
.v30-hero{border-left:6px solid var(--green);}
.v30-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px;}
.v30-head-info{width:100%;display:flex;gap:8px;flex-wrap:wrap;font-size:11px;color:var(--ink2);margin-top:2px;}
.v30-head-info span{background:rgba(45,106,79,.10);border:1px solid rgba(45,106,79,.18);border-radius:99px;padding:3px 8px;}
@media print{.mode-sw,#mainNav,.mobile-nav,.btn,.btn-sm,.install-banner{display:none!important}.app{max-width:none;padding:0}.card{break-inside:avoid}}

/* ============================================================
   V3.1 — cursos en lista vertical tipo Additio
   ============================================================ */
.app{max-width:1280px;}
.v31-shell{display:grid;grid-template-columns:330px minmax(0,1fr);gap:16px;align-items:start;}
.v31-sidebar{position:sticky;top:126px;align-self:start;max-height:calc(100vh - 140px);overflow:auto;padding-right:2px;}
.v31-main{min-width:0;}
.v31-new-card{padding:14px;margin-bottom:12px;}
.v31-new-card h2{font-size:15px;margin-bottom:8px;}
.v31-new-course{display:grid;grid-template-columns:1fr 90px;gap:8px;padding:10px;margin:0;}
.v31-new-course .btn{grid-column:1 / -1;justify-content:center;}
.v31-new-course input{width:100%!important;min-width:0!important;}
.v31-course-panel{padding:14px;}
.v31-course-list{display:flex;flex-direction:column;gap:8px;margin-top:8px;}
.v31-course-card{width:100%;display:flex;align-items:center;gap:10px;text-align:left;background:#fff;border:1px solid var(--line);border-left:5px solid var(--course-color);border-radius:12px;padding:10px 10px;cursor:pointer;color:var(--ink);box-shadow:0 1px 4px rgba(0,0,0,.04);transition:.15s ease;}
.v31-course-card:hover{transform:translateX(2px);box-shadow:0 4px 12px rgba(0,0,0,.08);}
.v31-course-card.on{background:linear-gradient(90deg, color-mix(in srgb, var(--course-color) 16%, #fff), #fff);border-color:var(--course-color);box-shadow:0 0 0 2px color-mix(in srgb, var(--course-color) 20%, transparent);}
.v31-course-dot{width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:color-mix(in srgb, var(--course-color) 16%, #fff);color:var(--course-color);flex:0 0 auto;}
.v31-course-main{display:flex;flex-direction:column;gap:2px;min-width:0;flex:1;}
.v31-course-main b{font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.v31-course-main small{font-size:12px;color:var(--ink2);}
.v31-course-more{font-size:20px;color:var(--course-color);opacity:.8;}
.v31-summary{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:12px;}
.v31-summary div{background:var(--green-bg);border-radius:10px;padding:10px;}
.v31-summary span{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.06em;color:var(--ink2);}
.v31-summary b{font-size:22px;color:var(--green);}
.v31-global-search{margin-top:14px;border-top:1px solid var(--line);padding-top:12px;}
.v31-global-search label{display:block;font-size:11px;text-transform:uppercase;font-weight:700;color:var(--ink2);margin-bottom:6px;letter-spacing:.05em;}
.v31-results{display:flex;flex-direction:column;gap:6px;margin-top:8px;}
.v31-result{border:1px solid var(--line);border-left:4px solid var(--course-color);background:#fff;border-radius:9px;padding:8px;text-align:left;cursor:pointer;}
.v31-result b{display:block;font-size:12px;}
.v31-result small{display:block;color:var(--ink2);font-size:11px;margin-top:2px;}
.v31-shell #courseDetail .card{margin-bottom:0;}
.v31-shell #v23CourseDashboard,.v31-shell #v23GlobalSearch{display:none!important;}
body.dark .v31-course-card, body.dark .v31-result{background:var(--card);}
body.dark .v31-course-card.on{background:color-mix(in srgb, var(--course-color) 15%, var(--card));}

@media (max-width: 900px){
  .app{max-width:100%;}
  .v31-shell{grid-template-columns:1fr;gap:10px;}
  .v31-sidebar{position:static;max-height:none;overflow:visible;padding-right:0;}
  .v31-course-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));}
  .v31-new-course{grid-template-columns:1fr 90px;}
}
@media (max-width: 600px){
  .v31-course-panel,.v31-new-card{padding:12px;}
  .v31-course-list{grid-template-columns:1fr;}
  .v31-new-course{grid-template-columns:1fr;}
  .v31-summary{grid-template-columns:1fr 1fr;}
  .v31-global-search input{font-size:13px;}
}

/* ============================================================
   V3.2 — botón superior izquierdo y menú lateral desplegable
   ============================================================ */
.v32-topbar{position:sticky;top:62px;z-index:45;background:var(--paper);display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--line);padding:8px 0 10px;margin-bottom:14px;}
.v32-menu-btn{width:42px;height:42px;border:none;border-radius:12px;background:var(--ink);color:#fff;font-size:22px;font-weight:800;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px rgba(0,0,0,.15);}
.v32-menu-btn:hover{transform:translateY(-1px);}
.v32-current{display:flex;flex-direction:column;gap:1px;min-width:0;flex:1;}
.v32-current b{font-size:15px;}
.v32-current small{font-size:11px;color:var(--ink2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.v32-exit{border:1px solid var(--red);color:var(--red);background:#fff;border-radius:99px;padding:8px 14px;font-weight:600;cursor:pointer;}
.v32-drawer-wrap{position:fixed;inset:0;z-index:9999;pointer-events:none;}
.v32-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.35);opacity:0;transition:opacity .18s ease;}
.v32-drawer{position:absolute;top:0;bottom:0;left:0;width:min(360px,88vw);background:var(--card);box-shadow:8px 0 28px rgba(0,0,0,.22);transform:translateX(-105%);transition:transform .18s ease;display:flex;flex-direction:column;padding:16px;overflow:auto;}
.v32-drawer-wrap.open{pointer-events:auto;}
.v32-drawer-wrap.open .v32-backdrop{opacity:1;}
.v32-drawer-wrap.open .v32-drawer{transform:translateX(0);}
.v32-drawer-head{display:flex;align-items:center;justify-content:space-between;gap:10px;border-bottom:1px solid var(--line);padding-bottom:12px;margin-bottom:14px;}
.v32-drawer-head b{display:block;font-size:18px;}
.v32-drawer-head small{display:block;color:var(--ink2);font-size:12px;margin-top:2px;}
.v32-close{width:34px;height:34px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;font-size:16px;}
.v32-menu-section{margin-bottom:16px;}
.v32-menu-title{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--ink2);font-weight:800;margin-bottom:7px;}
.v32-menu-item{width:100%;border:1px solid transparent;background:transparent;color:var(--ink);padding:10px 10px;border-radius:12px;text-align:left;font-weight:700;display:flex;align-items:center;gap:10px;cursor:pointer;}
.v32-menu-item span{width:24px;text-align:center;font-size:18px;}
.v32-menu-item:hover{background:#f3f0e6;border-color:var(--line);}
.v32-menu-item.on{background:var(--ink);color:#fff;}
.v32-course-mini-list{display:flex;flex-direction:column;gap:7px;}
.v32-course-mini{width:100%;display:grid;grid-template-columns:14px 1fr auto;align-items:center;gap:8px;border:1px solid var(--line);background:#fff;border-radius:11px;padding:9px 10px;text-align:left;cursor:pointer;}
.v32-course-mini span{width:10px;height:10px;border-radius:50%;background:var(--course-color);}
.v32-course-mini b{font-size:13px;}
.v32-course-mini small{font-size:11px;color:var(--ink2);background:#f0ede4;border-radius:99px;padding:2px 7px;}
.v32-course-mini.on{border-color:var(--course-color);background:color-mix(in srgb, var(--course-color) 10%, #fff);}
.v32-empty-mini{font-size:12px;color:var(--ink2);padding:8px;border:1px dashed var(--line);border-radius:10px;}
.v32-menu-footer{margin-top:auto;border-top:1px solid var(--line);padding-top:12px;}
.v32-logout{width:100%;border:1px solid var(--red);color:var(--red);background:#fff;border-radius:12px;padding:10px;font-weight:700;cursor:pointer;}
body.dark .v32-menu-btn{background:#fff;color:#111;}
body.dark .v32-exit, body.dark .v32-close, body.dark .v32-course-mini, body.dark .v32-logout{background:var(--card);}
body.dark .v32-menu-item:hover{background:rgba(255,255,255,.08);} 
@media (max-width:600px){
  .v32-topbar{top:58px;padding:6px 0 8px;}
  .v32-menu-btn{width:38px;height:38px;font-size:20px;border-radius:10px;}
  .v32-exit{display:none;}
  .v32-drawer{width:92vw;padding:14px;}
  .v32-current b{font-size:14px;}
}

/* V4.0 — IA y Classroom */
.v40-hero{border-left:6px solid var(--green);}
.v40-topbar{box-shadow:0 4px 14px rgba(0,0,0,.06);}
.v40-history{border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin-bottom:8px;background:#faf8f2;}
.v40-history b{display:block;font-size:13px;}
.v40-history small{display:block;color:var(--ink2);font-size:11px;margin:2px 0 6px;}
.v40-history p{font-size:12px;color:var(--ink);line-height:1.4;}