/* Portada Dynamic Island y botones 3D — SESIONES_REGULARES_3.5 */
body.home-page{
  --home-bg:#f3f7fb;
  --home-surface:#fff;
  --home-surface-soft:#f8fbfe;
  --home-text:#172033;
  --home-muted:#66758b;
  --home-border:#cdd9e5;
  --home-shadow-3d:#94a3b8;
  --home-primary:#008ec7;
  --home-primary-strong:#006f9e;
  --home-edit-bg:#e8f7fd;
  --home-header-a:#172b63;
  --home-header-b:#12558b;
  --c-sesion:#0284c7;
  --c-cotejo:#059669;
  --c-rubrica:#7c3aed;
  --c-exam:#d97706;
  --c-tareas:#2563eb;
  --c-cont:#db2777;
  --c-comp:#475569;
  min-height:100vh;
  background:var(--home-bg);
  color:var(--home-text);
  transition:background-color .3s ease,color .3s ease;
}
html[data-theme="dark"] body.home-page{
  --home-bg:#0f172a;
  --home-surface:#1e293b;
  --home-surface-soft:#172235;
  --home-text:#f8fafc;
  --home-muted:#aebbd0;
  --home-border:#405069;
  --home-shadow-3d:#020617;
  --home-primary:#38bdf8;
  --home-primary-strong:#7dd3fc;
  --home-edit-bg:#0c405d;
  --home-header-a:#071225;
  --home-header-b:#123b5d;
}

.home-topbar{
  position:sticky;top:0;z-index:30;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:78px;padding:12px clamp(16px,4vw,54px);
  background:linear-gradient(120deg,var(--home-header-a),var(--home-header-b));
  border-bottom:1px solid rgba(255,255,255,.16);
  box-shadow:0 10px 30px rgba(10,25,58,.22);
}
.home-brand-zone,.home-top-actions{display:flex;align-items:center;gap:14px;min-width:0}
.home-brand-zone .brand{min-width:0;text-decoration:none}
.home-brand-zone .brand-mark{width:44px;height:44px;filter:drop-shadow(0 5px 12px rgba(0,0,0,.18))}
.home-brand-zone .brand h1{color:#fff;font-size:clamp(1.04rem,2vw,1.35rem)}
.home-brand-zone .brand p{color:rgba(255,255,255,.76)}
.theme-toggle{
  width:44px;height:44px;display:grid;place-items:center;flex:0 0 auto;
  border:1px solid rgba(255,255,255,.35);border-radius:50%;
  background:rgba(255,255,255,.1);color:#fff;cursor:pointer;
  transition:transform .18s ease,background .18s ease,border-color .18s ease;
}
.theme-toggle:hover{transform:translateY(-1px);background:rgba(255,255,255,.2);border-color:#fff}
.theme-toggle svg{width:20px;height:20px}
.theme-icon[hidden]{display:none}
.home-version{border:1px solid rgba(255,255,255,.24);border-radius:999px;padding:7px 11px;background:rgba(255,255,255,.1);color:#fff;font-size:.76rem;font-weight:850}
.home-topbar .quick-links{gap:7px;flex-wrap:nowrap}
.home-topbar .quick-links a{width:38px;height:38px;display:grid;place-items:center;padding:0;border-color:rgba(255,255,255,.28);background:#fff;color:#15376d;box-shadow:0 6px 16px rgba(0,0,0,.12)}
.home-topbar .quick-links a:hover{transform:translateY(-2px);border-color:#fff}
.home-topbar .ai-icon{width:20px;height:20px;object-fit:contain}

.home-main{width:min(1120px,calc(100% - 28px));margin:28px auto 0}

/* Isla dinámica para perfiles reutilizables. */
.island-container{width:min(900px,92%);margin:0 auto;transition:all .4s cubic-bezier(.4,0,.2,1)}
.island-bar{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:12px 20px;border:2px solid var(--home-border);border-radius:40px;
  background:var(--home-surface);color:var(--home-text);
  box-shadow:0 12px 26px rgba(15,35,70,.09);cursor:pointer;
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease,background-color .3s ease;
}
.island-bar:hover{border-color:var(--home-primary);box-shadow:0 16px 34px rgba(2,132,199,.13);transform:translateY(-1px)}
.island-info{display:flex;align-items:center;gap:22px;min-width:0;font-size:.9rem}
.island-info>span{display:flex;align-items:center;gap:8px;min-width:0}
.island-info svg{width:19px;height:19px;color:var(--home-primary);flex:0 0 auto}
.island-info b{min-width:0;max-width:190px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:850}
.island-edit-pill{display:inline-flex;align-items:center;gap:7px;min-height:38px;padding:0 17px;border-radius:999px;background:var(--home-primary);color:#fff;font-size:.86rem;font-weight:900;white-space:nowrap}
.island-edit-pill svg{width:16px;height:16px}
.island-content{
  display:grid;grid-template-rows:0fr;opacity:0;overflow:hidden;
  margin-top:14px;border:0 solid var(--home-primary);border-radius:26px;
  background:var(--home-edit-bg);box-shadow:0 18px 42px rgba(2,132,199,.12);
  transition:grid-template-rows .5s ease,opacity .3s ease,border-width .4s ease,background-color .3s ease;
}
.island-container.expanded .island-content{grid-template-rows:1fr;opacity:1;border-width:2px}
.island-content-inner{min-height:0;overflow:hidden;padding:0 28px;transition:padding .5s ease}
.island-container.expanded .island-content-inner{padding:26px 28px 28px}
.island-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}
.island-heading h2{display:flex;align-items:center;gap:9px;margin:0;color:var(--home-primary-strong);font-size:1.25rem}
.island-heading h2 svg{width:21px;height:21px}
.island-close{width:40px;height:40px;display:grid;place-items:center;border:0;border-radius:50%;background:transparent;color:var(--home-text);cursor:pointer}
.island-close:hover{background:color-mix(in srgb,var(--home-surface) 75%,transparent)}
.island-close svg{width:21px;height:21px}
.island-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.island-form-section{min-width:0}
.island-context-section{grid-column:1/-1}
.island-label,.island-field>span{display:block;margin-bottom:6px;color:var(--home-text);font-size:.78rem;font-weight:900;letter-spacing:.045em;text-transform:uppercase;opacity:.8}
.island-field{display:block;margin-top:10px}
.island-inline{display:flex;gap:10px;min-width:0}
.island-inline.two-controls>*{min-width:0;flex:1}
.island-input{
  width:100%;min-width:0;min-height:43px;padding:10px 12px;
  border:1px solid var(--home-border);border-radius:12px;
  background:var(--home-surface);color:var(--home-text);font-weight:700;
  outline:none;transition:border-color .18s ease,box-shadow .18s ease,background-color .3s ease,color .3s ease;
}
.island-input:focus{border-color:var(--home-primary);box-shadow:0 0 0 4px color-mix(in srgb,var(--home-primary) 18%,transparent)}
textarea.island-input{min-height:100px;resize:vertical;line-height:1.45}
.context-select{border-color:var(--home-primary);color:var(--home-primary-strong)}
.btn-plus{
  width:45px;min-width:45px;min-height:43px;display:grid;place-items:center;
  border:0;border-radius:12px;background:var(--home-primary);color:#fff;cursor:pointer;
  transition:transform .18s ease,filter .18s ease;
}
.btn-plus:hover{transform:scale(1.05);filter:brightness(1.04)}
.btn-plus svg{width:19px;height:19px}
.context-editor{position:relative;margin-top:12px;padding:16px;border:1px solid var(--home-border);border-radius:15px;background:var(--home-surface);box-shadow:0 8px 22px rgba(15,35,70,.05)}
.context-editor[hidden]{display:none}
.context-editor-head{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(150px,.7fr) 42px;gap:10px;align-items:end}
.context-editor-head .island-field{margin-top:0}
.context-delete{width:42px;height:43px;display:grid;place-items:center;border:1px solid #fecaca;border-radius:12px;background:#fff5f5;color:#c62828;cursor:pointer}
.context-delete:hover{background:#ffe8e8;border-color:#f87171}
.context-delete svg{width:18px;height:18px}
.context-optional{display:flex;align-items:center;gap:8px;margin-top:12px;color:var(--home-text);font-size:.86rem;font-weight:750}
.context-optional input{width:18px;height:18px;accent-color:var(--home-primary)}
.island-save-row{display:flex;align-items:center;justify-content:flex-end;gap:16px;margin-top:22px}
.island-status{margin:0 auto 0 0;color:var(--home-primary-strong);font-size:.83rem;font-weight:750}
.island-save{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:45px;padding:0 28px;border:0;border-radius:999px;background:var(--home-primary);color:#fff;font-weight:900;cursor:pointer;box-shadow:0 8px 18px color-mix(in srgb,var(--home-primary) 24%,transparent)}
.island-save:hover{filter:brightness(1.04);transform:translateY(-1px)}
.island-save svg{width:18px;height:18px}
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}

/* Botones 3D del menú, conservando el comportamiento de presión del HTML de referencia. */
.tools-area{max-width:1100px;margin:38px auto 36px;text-align:center}
.tools-area h2{margin:0;color:var(--home-text);font-size:clamp(1.55rem,3vw,2rem)}
.tools-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-top:24px}
.tool-btn{
  min-height:170px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:26px 18px;border:2px solid var(--home-border);border-radius:24px;
  background:var(--home-surface);color:var(--home-text);text-decoration:none;cursor:pointer;
  box-shadow:0 8px 0 var(--home-shadow-3d);
  transition:transform .15s ease,box-shadow .15s ease,background-color .3s ease,border-color .3s ease,color .3s ease;
}
.tool-btn:hover{border-color:var(--home-primary);transform:translateY(-2px);box-shadow:0 10px 0 var(--home-shadow-3d)}
.tool-btn:active,.tool-btn.selected{transform:translateY(8px);box-shadow:0 0 0 transparent}
.icon-circle{width:66px;height:66px;display:grid;place-items:center;margin-bottom:15px;border-radius:50%;color:#fff;transition:all .3s ease}
.icon-circle svg{width:31px;height:31px;stroke-width:1.9}
.tool-btn strong{font-size:1.08rem;transition:color .3s ease}
.t-sesion .icon-circle{background:var(--c-sesion)}
.t-cotejo .icon-circle{background:var(--c-cotejo)}
.t-rubrica .icon-circle{background:var(--c-rubrica)}
.t-exam .icon-circle{background:var(--c-exam)}
.t-tareas .icon-circle{background:var(--c-tareas)}
.t-cont .icon-circle{background:var(--c-cont)}
.t-comp .icon-circle{background:var(--c-comp)}
.tool-btn.selected{color:#fff;border-color:transparent}
.tool-btn.selected .icon-circle{background:transparent;color:#fff;transform:scale(1.18)}
.tool-btn.t-sesion.selected{background:var(--c-sesion)}
.tool-btn.t-cotejo.selected{background:var(--c-cotejo)}
.tool-btn.t-rubrica.selected{background:var(--c-rubrica)}
.tool-btn.t-exam.selected{background:var(--c-exam)}
.tool-btn.t-tareas.selected{background:var(--c-tareas)}
.tool-btn.t-cont.selected{background:var(--c-cont)}
.tool-btn.t-comp.selected{background:var(--c-comp)}
.home-footer{padding:18px;text-align:center;color:var(--home-muted);font-size:.76rem}

@media(max-width:920px){
  .island-info{gap:14px}.island-info b{max-width:130px}
  .tools-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:700px){
  .home-topbar{align-items:flex-start;padding:11px 14px}.home-top-actions{gap:8px}.home-version{display:none}
  .home-topbar .quick-links a:nth-child(n+4){display:none}
  .home-brand-zone{gap:9px}.theme-toggle{width:40px;height:40px}.home-brand-zone .brand-mark{width:40px;height:40px}.home-brand-zone .brand p{display:none}
  .home-main{width:min(100% - 20px,1120px);margin-top:18px}
  .island-container{width:100%}.island-bar{align-items:flex-start;padding:13px 15px;border-radius:24px}.island-info{display:grid;gap:6px}.island-info b{max-width:55vw}.island-edit-pill{min-height:35px;padding:0 12px}.island-edit-pill svg{display:none}
  .island-form-grid{grid-template-columns:1fr}.island-context-section{grid-column:auto}.island-content-inner,.island-container.expanded .island-content-inner{padding-left:16px;padding-right:16px}
  .context-editor-head{grid-template-columns:1fr 42px}.context-editor-head .island-field:nth-child(2){grid-column:1/-1;grid-row:2}.context-delete{grid-column:2;grid-row:1}
  .island-save-row{align-items:stretch;flex-direction:column}.island-save{width:100%}.island-status{margin:0;text-align:center}
}
@media(max-width:520px){
  .home-topbar .quick-links a:nth-child(n+3){display:none}
  .tools-grid{grid-template-columns:1fr;gap:20px}.tool-btn{min-height:145px}
  .island-inline.two-controls{flex-direction:column}
}
@media(prefers-reduced-motion:reduce){.island-container,.island-content,.island-content-inner,.tool-btn,.theme-toggle{transition:none!important}}

/* Nueva herramienta visual — 3.5 */
body.home-page{--c-visual:#5367d9}
.t-visual .icon-circle{background:var(--c-visual)}
.tool-btn.t-visual.selected{background:var(--c-visual);box-shadow:0 8px 0 #3f4fb0;color:#fff;border-color:transparent}
.tool-btn.t-visual.selected .icon-circle{background:transparent;color:#fff;transform:scale(1.2)}