/* Consola Rocky — estilo «papel / cianotipo» (heredado de luis.altto.mx).
   Hoja de dibujo técnico: papel milimétrico claro por default,
   modo oscuro = inversión cianotipo. Tinta, azul de Prusia, cero esquinas redondeadas. */

@font-face { font-family: 'Space Grotesk'; src: url('/vendor/fonts/SpaceGrotesk-var.woff2') format('woff2'); font-weight: 300 700; font-style: normal; font-display: swap; }
@font-face { font-family: 'Inter'; src: url('/vendor/fonts/Inter-var.woff2') format('woff2'); font-weight: 100 900; font-style: normal; font-display: swap; }
@font-face { font-family: 'DM Mono'; src: url('/vendor/fonts/DMMono-400.woff2') format('woff2'); font-weight: 400; font-style: normal; font-display: swap; }

/* ── Tokens: PAPEL (default, claro) ────────────────── */
:root {
  --paper: #FAFBFD;
  --paper2: #F1F5FA;
  --panel: #FFFFFF;
  --ink: #0C1523;
  --muted: #3E4F66;
  --faint: #51637C;
  --blue: #16418A;
  --blue-strong: #0E3068;
  --blue-soft: #DCE6F5;
  --blue-mid: #7E9CC9;
  --grid: #E4EBF5;
  --grid-major: #CBD9EB;
  --line: #C7D3E4;
  --line-strong: #8FA4C0;
  --frame: #23374F;
  --ok: #2FA36B;
  --err: #B4232A;
  --btn-solid-ink: #FFFFFF;
  /* Acento cinabrio (design\SISTEMA.md §2) — anotación crítica, con cuentagotas */
  --accent: #C8492F;
  --accent-soft: #F5DDD6;
  --accent-ink: #FFFFFF;
  /* Movimiento mecánico (design\movimiento.md) */
  --ease-plotter: cubic-bezier(.2,.7,.2,1);
  --ease-settle: cubic-bezier(.34,1.2,.64,1);
  --dur-1: 90ms; --dur-2: 160ms; --dur-3: 240ms; --dur-5: 700ms;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* ── Tokens: CIANOTIPO (oscuro) ────────────────────── */
:root[data-theme="ciano"] {
  --paper: #0B2649;
  --paper2: #0A2140;
  --panel: #0F2E57;
  --ink: #EAF2FC;
  --muted: #C0D2EA;
  --faint: #93ADD1;
  --blue: #9CC3F9;
  --blue-strong: #C4DBFC;
  --blue-soft: rgba(156, 195, 249, .13);
  --blue-mid: #5B7FB4;
  --grid: rgba(214, 230, 250, .07);
  --grid-major: rgba(214, 230, 250, .14);
  --line: rgba(199, 219, 244, .22);
  --line-strong: rgba(199, 219, 244, .45);
  --frame: #B9CFEC;
  --ok: #5BC98F;
  --err: #F08A8F;
  --btn-solid-ink: #0B2649;
  --accent: #F2765C;
  --accent-soft: rgba(242, 118, 92, .16);
  --accent-ink: #0B2649;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background-color: var(--paper);
  /* papel milimétrico: módulo 28px, mayor cada 5 */
  background-image:
    linear-gradient(var(--grid-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-major) 1px, transparent 1px),
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 140px 140px, 140px 140px, 28px 28px, 28px 28px;
  color: var(--ink);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  transition: background-color .4s ease, color .4s ease;
}
::selection { background: var(--blue); color: var(--paper); }
#app { height: 100dvh; display: flex; flex-direction: column; }

.mono { font-family: 'DM Mono', ui-monospace, monospace; letter-spacing: .06em; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
svg.ico { display: block; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: square; stroke-linejoin: miter; }

/* ── Cabecera ──────────────────────────────────────── */
header.top {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  flex: 0 0 auto;
}
h1.marca { margin: 0; font-size: 1rem; font-weight: 400; }
.marca { display: flex; align-items: baseline; gap: 10px; flex: 1; min-width: 0; }
.marca .logo { color: var(--blue); align-self: center; flex: 0 0 auto; }
.marca-txt {
  font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 15px;
  letter-spacing: .2em; text-transform: uppercase;
}
.marca-sub { font-family: 'DM Mono', monospace; font-size: 10px; letter-spacing: .26em; color: var(--faint); }
.prov { font-family: 'DM Mono', monospace; font-size: 10.5px; letter-spacing: .18em; color: var(--faint); text-transform: uppercase; }
.theme-btn {
  font-family: 'DM Mono', monospace; font-size: 10px; letter-spacing: .18em;
  color: var(--blue); background: var(--blue-soft); border: 1px solid var(--line-strong);
  padding: 7px 10px; cursor: pointer;
}
.theme-btn:hover { border-color: var(--blue); }
.dot { width: 9px; height: 9px; background: var(--err); flex: 0 0 auto; }
.dot.on { background: var(--ok); }

/* ── Contenido ─────────────────────────────────────── */
main { flex: 1 1 auto; overflow-y: auto; padding: 16px 14px; -webkit-overflow-scrolling: touch; }
.vista { display: none; max-width: 1176px; margin: 0 auto; }
.vista.activa { display: block; }
.vacio { color: var(--faint); text-align: center; padding: 30px 10px; font-size: .92rem; }
.vacio .ico { margin: 0 auto 12px; opacity: .6; }

/* encabezado de sección: etiqueta mono + línea de cota */
h2 {
  display: flex; align-items: center; gap: 14px;
  font-family: 'DM Mono', monospace; font-weight: 400;
  font-size: 11.5px; color: var(--faint); text-transform: uppercase; letter-spacing: .24em;
  margin: 24px 0 12px;
}
h2::after { content: ""; flex: 1; height: 1.5px; background: var(--line-strong); }
h2:first-child { margin-top: 4px; }
.md h2 { display: block; }
.md h2::after { content: none; }

/* ── Captura rápida ────────────────────────────────── */
.captura {
  display: flex; gap: 8px; padding: 8px 12px;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
  flex: 0 0 auto;
}
.captura input {
  flex: 1; min-width: 0;
  background: var(--panel); color: var(--ink);
  border: 1px solid var(--line-strong);
  padding: 9px 12px; font-size: .93rem; font-family: inherit;
}
.captura input::placeholder { color: var(--faint); }
.captura button {
  background: var(--blue); color: var(--btn-solid-ink); border: 1px solid var(--blue);
  padding: 0 14px; cursor: pointer; display: flex; align-items: center;
}
.captura button:hover { background: var(--blue-strong); border-color: var(--blue-strong); }
.captura button:disabled { opacity: .45; }

/* ── Tabs ──────────────────────────────────────────── */
nav.tabs {
  display: flex; background: var(--paper2); border-top: 1.5px solid var(--frame);
  padding-bottom: var(--safe-bottom); flex: 0 0 auto;
}
nav.tabs button {
  flex: 1; background: none; border: 0; border-right: 1px solid var(--line);
  color: var(--muted); padding: 9px 0 10px; cursor: pointer;
  font-family: 'DM Mono', monospace; font-size: 9.5px; letter-spacing: .14em; text-transform: uppercase;
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  box-shadow: inset 0 0 transparent; transition: color .2s, box-shadow .2s;
}
nav.tabs button:last-child { border-right: 0; }
nav.tabs button.activa { color: var(--blue); background: var(--panel); box-shadow: inset 0 2.5px var(--blue); }

/* ── Botones ───────────────────────────────────────── */
.btn-sec {
  background: var(--panel); color: var(--ink); border: 1px solid var(--line-strong);
  padding: 7px 12px; font-size: 11.5px; letter-spacing: .1em; cursor: pointer;
  font-family: 'DM Mono', monospace; text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 7px;
}
.btn-sec:hover { border-color: var(--blue); color: var(--blue); }

/* ── Chat ──────────────────────────────────────────── */
.chat-msgs { display: flex; flex-direction: column; gap: 10px; padding-bottom: 8px; }
.msg { max-width: 88%; padding: 10px 14px; word-wrap: break-word; border: 1px solid var(--line); }
.msg.user { align-self: flex-end; background: var(--blue-soft); border-color: var(--line-strong); }
.msg.rocky { align-self: flex-start; background: color-mix(in srgb, var(--panel) 80%, transparent); }
.msg.rocky.error { border-color: var(--err); color: var(--err); }
.msg .msg-error { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: 4px; }
.msg .tools { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 7px; }
.msg .tool-chip {
  display: inline-flex; align-items: center; gap: 5px;
  font-family: 'DM Mono', monospace; font-size: 10px; letter-spacing: .08em;
  background: var(--paper2); border: 1px solid var(--line); padding: 2px 8px; color: var(--faint);
}
.chat-form { display: flex; gap: 8px; margin-top: 10px; }
.chat-form textarea {
  flex: 1; min-width: 0; resize: none;
  background: var(--panel); color: var(--ink);
  border: 1px solid var(--line-strong);
  padding: 9px 12px; font-size: .93rem; font-family: inherit;
}
.chat-form textarea::placeholder { color: var(--faint); }
.chat-form button {
  background: var(--blue); color: var(--btn-solid-ink); border: 1px solid var(--blue);
  padding: 0 18px; font-family: 'DM Mono', monospace; font-size: 11.5px;
  letter-spacing: .14em; text-transform: uppercase; cursor: pointer;
}
.chat-form button:hover { background: var(--blue-strong); border-color: var(--blue-strong); }
.chat-form button:disabled { opacity: .45; }
.chat-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.chat-top .sid {
  font-family: 'DM Mono', monospace; font-size: 10px; letter-spacing: .12em; color: var(--faint);
  overflow: hidden; text-overflow: ellipsis; max-width: 55%; white-space: nowrap; text-transform: uppercase;
}
.escribiendo { color: var(--faint); font-family: 'DM Mono', monospace; font-size: 11px; letter-spacing: .12em; }
.escribiendo::after { content: "…"; animation: puntos 1.2s steps(3) infinite; }
@keyframes puntos { 0% { opacity: .2; } 50% { opacity: 1; } 100% { opacity: .2; } }

/* ── Pendientes ────────────────────────────────────── */
ul.lista { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0; border-top: 1.5px solid var(--line-strong); }
li.item {
  display: flex; align-items: flex-start; gap: 12px;
  background: color-mix(in srgb, var(--panel) 65%, transparent);
  border-bottom: 1px dashed var(--line);
  padding: 11px 12px;
}
li.item input[type="checkbox"] { width: 17px; height: 17px; margin-top: 3px; accent-color: var(--blue); flex: 0 0 auto; }
li.item .cuerpo { flex: 1; min-width: 0; }
li.item.hecho .texto { text-decoration: line-through; color: var(--faint); }
li.item .meta { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 4px; }
li.item .borrar { background: none; border: 0; color: var(--faint); cursor: pointer; padding: 4px; flex: 0 0 auto; }
li.item .borrar:hover { color: var(--err); }

/* ── Chips ─────────────────────────────────────────── */
.chip {
  display: inline-flex; align-items: center; gap: 5px;
  font-family: 'DM Mono', monospace; font-size: 10px; letter-spacing: .1em; text-transform: uppercase;
  padding: 2px 8px; background: var(--blue-soft); color: var(--blue); border: 1px solid var(--line);
}
.chip .ico { flex: 0 0 auto; }
.chip.fecha { border-color: var(--line-strong); }
.chip.salon-chip { background: transparent; color: var(--muted); }
.chip.lab { background: transparent; border-style: dashed; color: var(--faint); }
.chip.bloque { background: transparent; color: var(--faint); }
.chip.pmt-on { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 45%, transparent); background: transparent; }
.chip.pmt-off { background: transparent; color: var(--faint); border-style: dashed; }
.chip.en-curso { background: var(--blue); color: var(--btn-solid-ink); border-color: var(--blue); }
.chip.sigue-chip { border-color: var(--blue-mid); }
.chip.hoy-chip { border-color: var(--blue); margin-left: auto; }

/* ── Agenda: tarjetas de hoy ───────────────────────── */
.clase {
  display: flex; gap: 14px; align-items: center;
  background: color-mix(in srgb, var(--panel) 72%, transparent);
  border: 1px solid var(--line); border-left: 3px solid var(--blue-mid);
  padding: 11px 14px; margin-bottom: 8px;
}
.clase.ahora { border-color: var(--blue); border-left-color: var(--blue); background: var(--panel); box-shadow: inset 0 -2.5px var(--blue); }
.clase .clase-horas {
  display: flex; flex-direction: column; align-items: flex-end;
  min-width: 50px; font-family: 'DM Mono', monospace; font-variant-numeric: tabular-nums; line-height: 1.35;
}
.clase .clase-horas span { color: var(--blue); font-size: .95rem; }
.clase .clase-horas .fin { color: var(--faint); font-size: .72rem; }
.clase .clase-cuerpo { min-width: 0; flex: 1; }
.clase .clase-nombre { font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 1rem; line-height: 1.25; }
.clase .clase-meta { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 5px; }

/* ── Agenda: semana ────────────────────────────────── */
.semana { display: flex; flex-direction: column; gap: 12px; }
@media (min-width: 900px) {
  .semana { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); align-items: start; }
}
.dia { background: color-mix(in srgb, var(--panel) 65%, transparent); border: 1px solid var(--line); padding: 10px 12px; }
.dia.hoy { border-color: var(--frame); border-width: 1.5px; }
.dia-cab { display: flex; align-items: baseline; gap: 10px; margin-bottom: 8px; border-bottom: 1.5px solid var(--line-strong); padding-bottom: 7px; }
.dia-nombre { font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: .95rem; letter-spacing: .02em; }
.dia-fecha { font-family: 'DM Mono', monospace; color: var(--faint); font-size: .72rem; letter-spacing: .1em; }
.sem-clase {
  display: flex; flex-wrap: wrap; align-items: center; gap: 4px 9px;
  padding: 7px 0; border-bottom: 1px dashed var(--line);
}
.sem-clase:last-child { border-bottom: 0; }
.sem-clase.apagada { opacity: .5; }
.sem-hora { font-family: 'DM Mono', monospace; font-variant-numeric: tabular-nums; font-size: .76rem; color: var(--blue); white-space: nowrap; }
.sem-nombre { font-size: .9rem; font-weight: 550; }
.sem-chips { display: flex; flex-wrap: wrap; gap: 5px; margin-left: auto; }

/* ── Semanas especiales ────────────────────────────── */
.esp-banner {
  background: var(--blue-soft); border: 1px solid var(--line-strong); color: var(--ink);
  border-left: 3px solid var(--blue);
  padding: 9px 13px; margin-bottom: 8px; font-size: .88rem;
}
.especial { background: color-mix(in srgb, var(--panel) 65%, transparent); border: 1px solid var(--line); padding: 10px 13px; margin-bottom: 8px; }
.especial.activa { border-color: var(--blue); }
.especial .esp-cab { display: flex; gap: 8px; align-items: center; }
.especial .esp-cab strong { font-family: 'Space Grotesk', sans-serif; font-weight: 600; }
.especial .esp-det { font-family: 'DM Mono', monospace; color: var(--faint); font-size: .74rem; letter-spacing: .06em; margin-top: 3px; }
.especial .esp-nota { color: var(--muted); font-size: .8rem; margin-top: 5px; }

/* ── Grabar ────────────────────────────────────────── */
.grabar-panel { display: flex; flex-direction: column; align-items: center; gap: 10px; padding-top: 10px; }
.grabar-label {
  align-self: flex-start; color: var(--faint);
  font-family: 'DM Mono', monospace; font-size: 10.5px; text-transform: uppercase; letter-spacing: .22em;
  border-bottom: 1.5px solid var(--line-strong); padding-bottom: 8px; margin-bottom: 4px; width: 100%;
}
.grabar-select {
  width: 100%; background: var(--panel); color: var(--ink);
  border: 1px solid var(--line-strong);
  padding: 10px 12px; font-size: .93rem; font-family: inherit;
}
.timer {
  font-family: 'DM Mono', monospace; font-size: 3.2rem; font-variant-numeric: tabular-nums;
  color: var(--faint); margin-top: 14px; line-height: 1;
}
.timer.vivo { color: var(--blue); }
.tam { color: var(--faint); font-family: 'DM Mono', monospace; font-size: .74rem; letter-spacing: .1em; min-height: 1.2em; text-transform: uppercase; }
.btn-rec {
  display: flex; align-items: center; gap: 10px;
  background: var(--panel); color: var(--ink);
  border: 1.5px solid var(--err);
  padding: 15px 32px; font-size: 1.05rem; font-weight: 600; cursor: pointer;
  font-family: 'Space Grotesk', sans-serif; letter-spacing: .04em;
  margin-top: 8px;
}
.btn-rec:hover { background: var(--blue-soft); }
.btn-rec:disabled { opacity: .5; }
.btn-rec-punto { width: 13px; height: 13px; background: var(--err); animation: latido-rec 1.6s ease-in-out infinite; }
@keyframes latido-rec { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }
.grabar-controles { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 8px; }
.btn-detener {
  background: var(--err); color: #fff; border: 1px solid var(--err);
  padding: 9px 16px; font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase;
  font-family: 'DM Mono', monospace; cursor: pointer;
  display: inline-flex; align-items: center; gap: 7px;
}
.prog { width: 100%; max-width: 340px; height: 9px; background: var(--paper2); border: 1px solid var(--line-strong); overflow: hidden; margin-top: 10px; }
.prog-barra { height: 100%; background: var(--blue); transition: width .2s steps(8); }
.grabar-aviso { text-align: center; font-size: .88rem; color: var(--muted); }
.fuentes { display: flex; flex-wrap: wrap; gap: 6px; width: 100%; }
.fuente {
  flex: 1 1 auto; display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  background: var(--panel); color: var(--muted);
  border: 1px solid var(--line-strong);
  padding: 8px 10px; font-size: 11.5px; letter-spacing: .06em; text-transform: uppercase;
  font-family: 'DM Mono', monospace; cursor: pointer; white-space: nowrap;
}
.fuente.activa { color: var(--blue); border-color: var(--blue); background: var(--blue-soft); }
.fuente:disabled { opacity: .5; cursor: default; }
.ayuda-fuente {
  width: 100%; margin: 0; font-size: .8rem; color: var(--muted); line-height: 1.55;
  border-left: 2px solid var(--line-strong); padding-left: 10px;
}
.ayuda-fuente strong { color: var(--ink); font-weight: 600; }

/* ── Sesiones ──────────────────────────────────────── */
.sesion-item {
  display: block; width: 100%; text-align: left;
  background: color-mix(in srgb, var(--panel) 65%, transparent);
  border: 1px solid var(--line); color: var(--ink);
  padding: 10px 13px; margin-bottom: 8px; cursor: pointer;
  font: inherit;
}
.sesion-item:hover { border-color: var(--blue); }
.sesion-item .mat { color: var(--blue); font-family: 'DM Mono', monospace; font-size: .68rem; text-transform: uppercase; letter-spacing: .16em; margin-bottom: 2px; }

/* ── Markdown ──────────────────────────────────────── */
.md { overflow-wrap: break-word; }
.md h1, .md h2, .md h3 {
  font-family: 'Space Grotesk', sans-serif; font-weight: 600; color: var(--ink);
  text-transform: none; letter-spacing: -.01em; margin: 16px 0 6px; line-height: 1.2;
}
.md h1 { font-size: 1.3rem; } .md h2 { font-size: 1.12rem; } .md h3 { font-size: 1rem; }
.md p { margin: 6px 0; }
.md pre {
  background: var(--paper2); border: 1px solid var(--line);
  padding: 10px; overflow-x: auto; font-size: .84rem;
}
.md code { font-family: 'DM Mono', ui-monospace, monospace; background: var(--paper2); border: 1px solid var(--line); padding: 0 4px; font-size: .85em; }
.md pre code { background: none; border: 0; padding: 0; }
.md blockquote { border-left: 3px solid var(--blue); margin: 8px 0; padding-left: 12px; color: var(--muted); }
.md table { border-collapse: collapse; display: block; overflow-x: auto; }
.md th, .md td { border: 1px solid var(--line); padding: 4px 9px; }
.md th { font-family: 'DM Mono', monospace; font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; color: var(--faint); }
.md a { color: var(--blue); text-decoration: none; }
.md a:hover { text-decoration: underline; text-underline-offset: 3px; }
.md ul, .md ol { padding-left: 22px; }
.md .katex-display { overflow-x: auto; overflow-y: hidden; padding: 4px 0; }

/* ── Toast ─────────────────────────────────────────── */
.toast {
  position: fixed; left: 50%; transform: translateX(-50%);
  bottom: calc(120px + var(--safe-bottom));
  background: var(--ink); color: var(--paper); border: 1px solid var(--frame);
  padding: 9px 16px; font-size: .84rem;
  opacity: 0; pointer-events: none; transition: opacity .25s;
  z-index: 50; max-width: 88vw;
}
.toast.visible { opacity: 1; }

/* ── Nota de voz en el chat ────────────────────────── */
.btn-mic {
  background: var(--panel) !important; color: var(--blue) !important;
  border: 1px solid var(--line-strong) !important;
  padding: 0 12px !important; display: flex; align-items: center;
}
.btn-mic:hover { border-color: var(--blue) !important; background: var(--blue-soft) !important; }
.btn-mic.grabando {
  background: var(--err) !important; border-color: var(--err) !important;
  color: #fff !important; animation: mic-pulso 1.2s ease-in-out infinite;
}
.btn-mic.transcribiendo { opacity: .55; }
@keyframes mic-pulso { 0%, 100% { opacity: 1; } 50% { opacity: .55; } }

/* ── Drag & drop global ────────────────────────────── */
.drop-overlay {
  position: fixed; inset: 0; z-index: 60; pointer-events: none;
  background: color-mix(in srgb, var(--paper) 72%, transparent);
  display: flex; align-items: center; justify-content: center;
}
.drop-caja {
  border: 2px dashed var(--blue); background: var(--panel); color: var(--blue);
  padding: 34px 44px; text-align: center; display: flex; flex-direction: column;
  align-items: center; gap: 10px;
  font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 1.05rem;
}
.drop-sub {
  font-family: 'DM Mono', monospace; font-size: 10.5px; letter-spacing: .1em;
  color: var(--faint); text-transform: uppercase; font-weight: 400;
}

/* ── Modal de enrutamiento de archivos ─────────────── */
.modal-fondo {
  position: fixed; inset: 0; z-index: 70;
  background: color-mix(in srgb, var(--ink) 38%, transparent);
  display: flex; align-items: center; justify-content: center; padding: 18px;
}
.modal {
  background: var(--panel); border: 1px solid var(--frame); color: var(--ink);
  width: min(480px, 100%); max-height: 86dvh; overflow-y: auto; padding: 20px 22px;
}
.modal-titulo {
  margin: 0 0 12px; font-family: 'Space Grotesk', sans-serif; font-size: 1.02rem;
}
.modal-lista { list-style: none; margin: 0 0 14px; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.modal-lista li {
  display: flex; align-items: center; gap: 8px; font-size: .86rem;
  border: 1px solid var(--line); padding: 6px 10px; background: var(--paper2);
}
.modal-lista .ico { color: var(--blue); flex: 0 0 auto; }
.modal-nombre { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.modal-dest {
  font-family: 'DM Mono', monospace; font-size: 9.5px; letter-spacing: .08em;
  color: var(--faint); text-transform: uppercase; flex: 0 0 auto;
}
.modal-errores {
  border: 1px solid var(--err); color: var(--err); background: var(--paper2);
  padding: 8px 12px; margin-top: 12px; font-size: .82rem;
  display: flex; flex-direction: column; gap: 4px;
}
.modal-errores .ico { display: inline-block; vertical-align: -2px; margin-right: 4px; }
.modal-acciones { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }
.modal-acciones button:not(.btn-sec) {
  background: var(--blue); color: var(--btn-solid-ink); border: 1px solid var(--blue);
  padding: 8px 18px; font-family: 'DM Mono', monospace; font-size: 11.5px;
  letter-spacing: .14em; text-transform: uppercase; cursor: pointer;
}
.modal-acciones button:not(.btn-sec):hover { background: var(--blue-strong); border-color: var(--blue-strong); }
.modal-acciones button:disabled { opacity: .45; }

/* ══════════════════════════════════════════════════════════════════
   HERRAMIENTAS — sección de calculadoras (tools.js)
   ══════════════════════════════════════════════════════════════════ */

.acc-txt, .acc { color: var(--accent); }
.acc-ok { color: var(--ok); } .acc-a { color: var(--accent); } .acc-err { color: var(--err); }

/* buscador */
.tbuscar {
  display: flex; align-items: center; gap: 9px; margin: 2px 0 4px;
  border: 1px solid var(--line-strong); background: var(--panel); padding: 8px 12px;
}
.tbuscar .ico { color: var(--faint); flex: 0 0 auto; }
.tbuscar input { flex: 1; border: 0; background: none; color: var(--ink); font: inherit; }
.tbuscar input:focus { outline: none; }

/* rejilla de tarjetas */
.tcards { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
.tcard {
  display: flex; flex-direction: column; gap: 4px; text-align: left;
  background: color-mix(in srgb, var(--panel) 72%, transparent);
  border: 1px solid var(--line); border-left: 3px solid var(--blue-mid);
  padding: 12px 13px; cursor: pointer; color: var(--ink); font: inherit;
  transition: transform var(--dur-2) var(--ease-plotter), border-color var(--dur-2), box-shadow var(--dur-2);
  animation: settle var(--dur-3) var(--ease-settle) both;
}
.tcard:hover { transform: translateY(-2px); border-left-color: var(--accent); box-shadow: 0 2px 0 var(--line-strong); }
.tcard-ic { color: var(--blue); }
.tcard:hover .tcard-ic { color: var(--accent); }
.tcard-nom { font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: .95rem; }
.tcard-desc { font-size: .74rem; color: var(--faint); line-height: 1.35; }
@keyframes settle { from { opacity: 0; transform: translateY(7px); } to { opacity: 1; transform: translateY(0); } }

/* encabezado de herramienta abierta */
.ttool-top { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.ttool-nom { display: inline-flex; align-items: center; gap: 8px; font-family: 'Space Grotesk', sans-serif; font-weight: 600; }
.ttool-nom .ico { color: var(--blue); }
.tpanel { display: flex; flex-direction: column; gap: 12px; max-width: 640px; }

/* formularios */
.tform { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-end; }
.tcampo { display: flex; flex-direction: column; gap: 4px; flex: 1 1 140px; min-width: 0; }
.tcampo-lbl { font-family: 'DM Mono', monospace; font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--faint); }
.tcampo-in { display: flex; align-items: center; border: 1px solid var(--line-strong); background: var(--panel); }
.tcampo-in input { flex: 1; min-width: 0; border: 0; background: none; color: var(--ink); font: inherit; padding: 8px 10px; }
.tcampo-in input:focus { outline: none; }
.tcampo-in:focus-within { border-color: var(--blue); box-shadow: inset 0 -2px 0 var(--blue); }
.tcampo-suf { color: var(--faint); font-size: .72rem; padding-right: 9px; }
.tsel, .tcampo select {
  border: 1px solid var(--line-strong); background: var(--panel); color: var(--ink);
  font: inherit; padding: 8px 10px; cursor: pointer;
}
.ttext {
  border: 1px solid var(--line-strong); background: var(--panel); color: var(--ink);
  font: inherit; padding: 9px 11px; resize: vertical; width: 100%;
}
.ttext:focus, .tsel:focus { outline: none; border-color: var(--blue); }

/* control segmentado */
.tseg { display: inline-flex; border: 1px solid var(--line-strong); flex-wrap: wrap; }
.tseg button {
  background: var(--panel); color: var(--muted); border: 0; border-right: 1px solid var(--line);
  padding: 7px 13px; cursor: pointer; font-family: 'DM Mono', monospace; font-size: 11px;
  letter-spacing: .06em; text-transform: uppercase; transition: color var(--dur-1), background var(--dur-1);
}
.tseg button:last-child { border-right: 0; }
.tseg button.on { background: var(--blue); color: var(--btn-solid-ink); }

.tbotones { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }

/* resultados */
.tres { display: flex; flex-direction: column; border-top: 1.5px solid var(--line-strong); }
.tres-2col { display: grid; grid-template-columns: 1fr 1fr; }
.tfila {
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px;
  padding: 8px 2px; border-bottom: 1px dashed var(--line);
}
.tfila-k { color: var(--muted); font-size: .84rem; }
.tfila-v { font-size: .92rem; text-align: right; word-break: break-word; }
.tfila.acc { background: color-mix(in srgb, var(--accent-soft) 40%, transparent); margin: 0 -6px; padding: 8px; }
.tfila.acc .tfila-v { color: var(--accent); font-weight: 600; }
.tnota { font-size: .76rem; color: var(--faint); line-height: 1.5; margin: 4px 0 0; border-left: 2px solid var(--line-strong); padding-left: 9px; }
.tnota .acc-txt { color: var(--accent); }

/* canvas */
.tcanvas {
  width: 100%; height: 320px; border: 1px solid var(--line-strong); background: var(--panel);
  touch-action: none; cursor: grab;
}
.tcanvas.chico { height: 200px; cursor: default; }

/* tablas */
.ttabla { border-collapse: collapse; font-size: .82rem; }
.ttabla.full { width: 100%; }
.ttabla th { font-family: 'DM Mono', monospace; font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; color: var(--faint); text-align: left; padding: 5px 8px; border-bottom: 1.5px solid var(--line-strong); }
.ttabla td { padding: 5px 8px; border-bottom: 1px dashed var(--line); }
.ttablas { display: flex; gap: 12px; flex-wrap: wrap; }
.ttabla-wrap { flex: 1 1 160px; }
.ttabla.editable td { padding: 2px; }
.tin-mini { width: 100%; border: 1px solid transparent; background: var(--paper2); color: var(--ink); font: inherit; padding: 6px 8px; }
.tin-mini:focus { outline: none; border-color: var(--blue); background: var(--panel); }
.ttabla .borrar { background: none; border: 0; color: var(--faint); cursor: pointer; font-size: 1.1rem; padding: 0 6px; }
.ttabla .borrar:hover { color: var(--err); }
.tsub { color: var(--faint); font-size: .72em; }

/* tabla periódica */
.tabla-per {
  display: grid; grid-template-columns: repeat(18, minmax(24px, 1fr)); grid-auto-rows: 1fr;
  gap: 2px; overflow-x: auto; padding-bottom: 4px;
}
.pel {
  aspect-ratio: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  border: 1px solid var(--line); background: var(--panel); cursor: pointer; padding: 0; min-width: 24px;
  transition: transform var(--dur-1), border-color var(--dur-1);
}
.pel:hover { transform: scale(1.12); z-index: 2; border-color: var(--ink); }
.pel.sel { border-color: var(--accent); border-width: 2px; }
.pel.off { opacity: .22; }
.pel-z { font-family: 'DM Mono', monospace; font-size: 7px; color: var(--faint); line-height: 1; }
.pel-s { font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 12px; line-height: 1.1; }
/* categorías (color = información: la clase química) */
.cat-nm { background: color-mix(in srgb, #16418A 9%, var(--panel)); }
.cat-ng { background: color-mix(in srgb, #6A4FB0 12%, var(--panel)); }
.cat-am { background: color-mix(in srgb, #C8492F 12%, var(--panel)); }
.cat-ae { background: color-mix(in srgb, #C77F2F 12%, var(--panel)); }
.cat-tm { background: color-mix(in srgb, #2F8FA3 12%, var(--panel)); }
.cat-ptm { background: color-mix(in srgb, #5B7FB4 12%, var(--panel)); }
.cat-ml { background: color-mix(in srgb, #2FA36B 12%, var(--panel)); }
.cat-ln { background: color-mix(in srgb, #B0509A 12%, var(--panel)); }
.cat-an { background: color-mix(in srgb, #A0673B 14%, var(--panel)); }
.cat-unk { background: var(--paper2); }
.tdetalle { display: flex; gap: 14px; align-items: center; border: 1px solid var(--line-strong); padding: 12px 14px; }
.tdet-sim { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 2.6rem; color: var(--blue); line-height: 1; min-width: 60px; text-align: center; }
.tdet-info { flex: 1; min-width: 0; }
.tdet-nom { font-family: 'Space Grotesk', sans-serif; font-weight: 600; margin-bottom: 4px; }
.tdetalle .tres { border-top: 0; }

/* barra pH */
.tbarra-ph { height: 14px; margin-top: 4px; position: relative;
  background: linear-gradient(90deg, #C8492F, #C77F2F, #2FA36B, #16418A); border: 1px solid var(--line-strong); }
.tbarra-ph-mark { position: absolute; top: -3px; width: 3px; height: 20px; background: var(--ink); transform: translateX(-50%); }
.tbarra-ph-lbl { display: flex; justify-content: space-between; font-size: 9px; color: var(--faint); margin-top: 3px; }

/* semestre / progreso */
.tsem { display: flex; flex-direction: column; gap: 5px; }
.tprog { height: 9px; background: var(--paper2); border: 1px solid var(--line-strong); overflow: hidden; }
.tprog-b { height: 100%; background: var(--blue); transition: width var(--dur-5) var(--ease-plotter); }

/* deadlines */
.tdl-lista { border-top: 1.5px solid var(--line-strong); }
.tdl-badge { width: 10px; height: 10px; margin-top: 4px; flex: 0 0 auto; }
.tdl-badge.tdl-r { background: var(--err); } .tdl-badge.tdl-a { background: var(--accent); }
.tdl-badge.tdl-b { background: var(--blue); } .tdl-badge.tdl-off { background: var(--line-strong); }
.tdl-venc { text-decoration: line-through; color: var(--faint); }

/* pomodoro */
.tpomo { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 14px; border: 1px solid var(--line-strong); }
.tpomo.brk { border-color: var(--ok); }
.tpomo-t { font-family: 'DM Mono', monospace; font-size: 3.6rem; font-variant-numeric: tabular-nums; color: var(--blue); line-height: 1; }
.tpomo.brk .tpomo-t { color: var(--ok); }

/* flashcards */
.tcard-repaso { border: 1px solid var(--line-strong); background: var(--panel); padding: 22px 16px; text-align: center; cursor: pointer; min-height: 120px; display: flex; flex-direction: column; justify-content: center; gap: 6px; }
.tcard-txt { font-size: 1.15rem; font-family: 'Space Grotesk', sans-serif; }
.tcard-cal { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.tcal { border: 1px solid var(--line-strong); background: var(--panel); color: var(--ink); padding: 9px 4px; cursor: pointer; font-family: 'DM Mono', monospace; font-size: 11px; text-transform: uppercase; }
.tcal.r:hover { border-color: var(--err); color: var(--err); }
.tcal.a:hover { border-color: var(--accent); color: var(--accent); }
.tcal.b:hover, .tcal.g:hover { border-color: var(--blue); color: var(--blue); }

/* contenido */
.tprev { border-left: 2px solid var(--accent); padding-left: 10px; font-size: .85rem; }
.tprev mark { background: var(--accent-soft); color: var(--ink); }
.tchips-tags { display: flex; flex-direction: column; gap: 6px; }
.tchips-row { display: flex; flex-wrap: wrap; gap: 5px; }
.tsafe { display: flex; justify-content: center; padding: 8px; background: var(--paper2); border: 1px solid var(--line); }
.tsafe canvas { border: 1px solid var(--line-strong); }
.tcheck { display: flex; align-items: center; gap: 8px; font-size: .84rem; color: var(--muted); }
.tcheck input { width: 16px; height: 16px; accent-color: var(--blue); }

/* ══ Pulido «más vivo» global (motion + marcas de registro) ══ */
/* La línea de cota de cada sección se traza al aparecer */
h2::after { transform-origin: left; animation: cota var(--dur-5) var(--ease-plotter) both; }
@keyframes cota { from { transform: scaleX(0); } to { transform: scaleX(1); } }
/* La pestaña activa desliza su acento */
nav.tabs button.activa { transition: color var(--dur-2), box-shadow var(--dur-2) var(--ease-plotter); }
/* Botón primario: relleno de tinta por barrido en hover */
.chat-form button, .captura button { position: relative; overflow: hidden; }
/* respeta reduce-motion: sin traslados ni trazados */
@media (prefers-reduced-motion: reduce) {
  .tcard, h2::after, .tprog-b, .pel { animation: none !important; transition: none !important; }
  .tcard:hover, .pel:hover { transform: none; }
}