/* ══════════════════════════════════════════════════════════
   ATLAS v0.3.2 — "Menos interfaz, más ATLAS."
   Jerarquía: núcleo protagonista, un botón principal, conversación.
   Durante la conversación (body[data-conversing="true"]) se oculta
   todo lo secundario: riel, navegación, accesos discretos.
   Estados: esperando | escuchando | pensando | hablando.
   ══════════════════════════════════════════════════════════ */

/* RESPALDO :root azul (pre-paleta crema/verde). Para volver: copiar y pegar.
:root {
  --bg: #070B14;
  --bg2: #0A1120;
  --surface: #0D1424;
  --surface-2: #121B30;
  --line: rgba(120, 160, 255, 0.14);
  --panel-border: rgba(120, 160, 255, 0.14);
  --text: #E6ECF8;
  --text-muted: #8A97B2;
  --ink: #E6ECF8;
  --ink-dim: #8A97B2;
  --accent: #3B82F6;
  --accent-glow: #60A5FA;
  --accent-deep: #1D4ED8;
  --accent-cyan: #22D3EE;
  --danger: #C46A63;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}
*/
:root {
  --bg: #111808;
  --bg2: #0C1106;
  --surface: #181F0E;
  --surface-2: #1F2815;
  --line: rgba(255, 240, 186, 0.14);
  --panel-border: rgba(255, 240, 186, 0.14);
  --text: #FFF0BA;
  --text-muted: #A59E76;
  --ink: #111808;
  --ink-dim: color-mix(in srgb, #FFF0BA 72%, #111808);
  --on-accent: #111808; /* texto sobre botones crema (rol único) */
  --core-center: color-mix(in srgb, #FFF0BA 70%, white); /* centro luminoso del núcleo */
  --accent: #FFF0BA;
  --accent-glow: #FFE58A;
  --accent-deep: #E8D58F;
  --danger: #C46A63;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  /* Zona clara: papel y tinta (derivados, sin colores nuevos) */
  --paper: color-mix(in srgb, #FFF0BA 55%, white);
  --paper-2: color-mix(in srgb, var(--paper) 92%, #111808);
  --on-paper: #111808;
  --on-paper-muted: color-mix(in srgb, #111808 70%, var(--paper));
  --line-on-paper: color-mix(in srgb, #111808 16%, transparent);
  --shadow-soft: 0 10px 30px rgba(17, 24, 8, 0.10);
  --shadow-lift: 0 14px 34px rgba(17, 24, 8, 0.14);
  --font: "Inter", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Sora", "Inter", "Segoe UI", system-ui, sans-serif;
  --ease: cubic-bezier(0.22, 0.8, 0.3, 1);
  --ease-state: cubic-bezier(0.2, 0, 0, 1);
  --px: 0; /* parallax del núcleo (lo escribe JS) */
  --py: 0;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--paper);
  color: var(--on-paper);
  min-height: 100vh;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--font-display); line-height: 1.2; text-wrap: balance; }

:focus-visible { outline: 2px solid var(--on-paper); outline-offset: 3px; border-radius: 8px; }
.topbar :focus-visible, .hero :focus-visible { outline-color: var(--accent-glow); }
button { font-family: inherit; min-height: 44px; }

/* Fondo: solo respiración, sin grano ni ruido */
.bg { position: fixed; inset: 0; z-index: -1; overflow: hidden; }
.bg-orb { position: absolute; border-radius: 50%; filter: blur(110px); opacity: 0.22; }
.bg-orb-a { width: 460px; height: 460px; left: -140px; top: -130px; background: color-mix(in srgb, var(--accent) 16%, var(--bg)); animation: drift 18s ease-in-out infinite alternate; }
.bg-orb-b { width: 400px; height: 400px; right: -130px; top: 34%; background: color-mix(in srgb, var(--accent) 10%, var(--bg)); animation: drift 22s ease-in-out infinite alternate-reverse; }
@keyframes drift { from { transform: translateY(-14px); } to { transform: translateY(22px); } }

/* ── Encabezado mínimo ── */
.topbar {
  display: flex; align-items: center; gap: 16px;
  padding: 12px 28px;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  position: sticky; top: 0; z-index: 10;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mascot { display: inline-flex; flex: none; }
.brand-mascot .mascot { height: 30px; width: auto; display: block; overflow: visible; }
/* Mascota ATLAS: solo el dibujo interior vive; el logo como unidad queda quieto. */
.mascot .breathe { transform-box: fill-box; transform-origin: center; animation: mascot-breathe 4.2s ease-in-out infinite; }
@keyframes mascot-breathe { 0%,100% { transform: scale(1); } 50% { transform: scale(1.015); } }
.mascot .sheen { animation: mascot-sheen 4.2s ease-in-out infinite; }
@keyframes mascot-sheen { 0%,100% { opacity: 0.12; } 50% { opacity: 0.22; } }
.mascot .eye { transform-box: fill-box; transform-origin: center; }
.mascot .eye.blink { animation: mascot-blink 0.22s ease-in-out; }
@keyframes mascot-blink { 0%,100% { transform: scaleY(1); } 40% { transform: scaleY(0.5); } }
/* Estados (preparado para sincronizar; hoy sigue al núcleo por defecto) */
.mascot[data-mstate="thinking"] .breathe { animation-duration: 2.6s; }
.mascot[data-mstate="thinking"] .sheen { animation-duration: 2.6s; }
.mascot[data-mstate="speaking"] .breathe { animation: mascot-speak 1.5s ease-in-out infinite; }
@keyframes mascot-speak { 0%,100% { transform: scale(1); } 50% { transform: scale(1.012); } }
.mascot[data-mstate="listening"] .breathe { animation: none; transform: scale(1.012); }
.mascot[data-mstate="listening"] .eyes { transform: scaleY(1.06); }
.mascot .eyes { transform-box: fill-box; transform-origin: center; transition: transform 0.4s var(--ease-state, ease); }
.mascot .breathe { transition: transform 0.4s var(--ease-state, ease); }
.brand-name { letter-spacing: 0.3em; font-size: 0.95rem; font-family: var(--font-display); font-weight: 600; color: var(--text); }
.tabs { display: flex; gap: 2px; margin-inline: auto; }
.tab {
  background: transparent; color: var(--ink-dim); border: none;
  padding: 8px 12px; border-radius: 8px; cursor: pointer; font-size: 0.85rem; font-weight: 500;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.tab:hover { color: var(--text); }
.tab.is-active { color: var(--text); background: rgba(255, 240, 186, 0.12); }

/* ── Estructura: aire, una columna protagonista ── */
.layout {
  max-width: 680px; margin: 0 auto; padding: 28px 28px 56px;
}
.main-col { min-width: 0; max-width: 680px; margin: 0 auto; width: 100%; }

/* Hero: la única banda verde de la home (el núcleo vive sobre oscuro).
   Full-bleed exacto sin vw (evita el desfase de la scrollbar): márgenes
   negativos compensados con padding. Requiere body{overflow-x:clip}. */
.hero {
  background:
    radial-gradient(700px 480px at 18% 8%, rgba(255,255,255,0.35), transparent 60%),
    radial-gradient(760px 560px at 88% 4%, rgba(175,199,160,0.12), transparent 62%),
    radial-gradient(900px 640px at 50% 115%, rgba(245,231,176,0.5), transparent 68%),
    linear-gradient(180deg, #FFF0BA 0%, #FFF0BA 100%);
  color: var(--on-paper);
  border-radius: 0 0 32px 32px;
  margin: 0 -999px;
  padding: 26px 999px 30px;
  position: relative;
  overflow: hidden;
}
/* Decoración ambiental sutil: círculos casi invisibles + deriva lenta */
.hero::before {
  content: ""; position: absolute; width: 340px; height: 340px;
  border: 1px solid rgba(17,24,8,0.10); border-radius: 50%;
  top: -120px; right: -60px; pointer-events: none;
}
.hero::after {
  content: ""; position: absolute; width: 220px; height: 220px;
  border: 1px dashed rgba(17,24,8,0.10); border-radius: 50%;
  bottom: -70px; left: -40px; pointer-events: none;
  animation: blob-drift 14s ease-in-out infinite alternate;
}
@keyframes blob-drift { from { transform: translate(0,0); } to { transform: translate(18px,-14px); } }
.hero > div, .hero > p { max-width: 640px; margin-left: auto; margin-right: auto; position: relative; z-index: 1; }
.hero .greeting { color: var(--on-paper); font-family: var(--font-display); font-size: 1.12rem; font-weight: 600; }
.hero .core-state { color: var(--on-paper-muted); }
.hero .link-btn { color: var(--on-paper-muted); }
.hero .link-btn:hover { color: var(--on-paper); }
.hero .ghost-btn { color: var(--on-paper); border-color: color-mix(in srgb, var(--on-paper) 30%, transparent); }
.hero .ghost-btn:hover { color: var(--on-paper); border-color: var(--on-paper); }
.hero .talk-btn { background: var(--bg); color: var(--paper); box-shadow: 0 10px 26px rgba(17,24,8,0.25); }
.hero .talk-btn:hover { box-shadow: 0 14px 32px rgba(17,24,8,0.3); }
.hero .talk-btn.listening { background: var(--bg); color: var(--paper); box-shadow: 0 10px 26px rgba(17,24,8,0.25), inset 0 0 0 2px rgba(255,240,186,0.55); }
.greeting { text-align: center; color: var(--on-paper); font-size: 1.05rem; margin: 4px 0 0; }
.greeting + .greeting { margin-top: 2px; }

/* Bienvenida: conversación, no formulario. Reusa las filas de inicio. */
#view-bienvenida { max-width: 560px; margin: 26px auto 0; }
.welcome-logo { display: block; width: min(200px, 62%); height: auto; margin: 2px auto 6px; }
#view-bienvenida .greeting { color: var(--on-paper); font-family: var(--font-display); font-weight: 600; }
.welcome-brand { background: var(--bg); border-radius: 20px; padding: 20px 18px 16px; margin-bottom: 4px; }
.welcome-q { font-family: var(--font-display); font-size: 1.05rem; font-weight: 600; margin: 30px 0 4px; }
#welcomeGoal { animation: in 0.3s var(--ease); }
.profile-line { display: flex; align-items: center; gap: 6px; }
.profile-line[hidden] { display: none; }
.eyebrow { color: var(--on-paper-muted); text-transform: uppercase; letter-spacing: 0.18em; font-size: 0.72rem; font-weight: 600; margin: 0 0 10px; }
.mode-title { font-family: var(--font-display); font-size: 1.55rem; letter-spacing: -0.01em; margin: 0 0 6px; font-weight: 700; }
.lede { color: var(--on-paper-muted); font-size: 0.98rem; max-width: 56ch; line-height: 1.65; }

/* Línea de sesión: contexto sin banner */
.session-line { color: var(--on-paper-muted); display: flex; align-items: center; gap: 10px; justify-content: center; font-size: 0.85rem; margin: 12px 0 6px; }
.session-line[hidden] { display: none; }
.session-line strong { color: var(--on-paper); font-weight: 600; }
.session-pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--bg); box-shadow: 0 0 10px color-mix(in srgb, var(--bg) 60%, transparent); animation: pulse 2s ease-in-out infinite; flex: none; }
@keyframes pulse { 50% { opacity: 0.4; } }

/* ── Núcleo: presencia viva (Paso 4: luminoso central, sin especular) ── */
.core-wrap { display: flex; flex-direction: column; align-items: center; margin: 22px 0 8px; }
/* Escenario: la mascota sostiene el orbe (solo capas; orbe y mascota intactos) */
/* Escenario: UNA composición. Mascota atrás (soporte), orbe protagonista encima,
   halo ambiental detrás. Solo layout y capas; orbe y Rive intactos. */
.core-stage { position: relative; width: min(620px, 96vw); height: 340px; margin: 0 auto 82px; }
.core-stage::before {
  content: ""; position: absolute; right: 0; top: 0; width: 330px; height: 330px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(255,240,186,0.5), transparent 70%);
  filter: blur(14px); z-index: 0; opacity: 0.6;
  animation: halo-breath 6s ease-in-out infinite;
  transition: opacity 0.6s var(--ease-state);
}
body[data-atlas-state="escuchando"] .core-stage::before { opacity: 0.9; }
body[data-atlas-state="pensando"] .core-stage::before { opacity: 0.75; }
body[data-atlas-state="hablando"] .core-stage::before { opacity: 1; }
@keyframes halo-breath { 0%,100% { opacity: 0.5; } 50% { opacity: 0.7; } }
.core-stage .atlas-core { position: absolute; right: 0; top: 0; z-index: 1; width: 250px; height: 250px; }
.core-mascot { position: absolute; left: 0; bottom: 0; width: 100px; z-index: 3; animation: hold-sway 5.5s ease-in-out infinite; }
.core-mascot .mascot, .core-mascot #riveMascot { transform: rotate(-6deg); }
.core-computer { position: absolute; left: 88px; bottom: 0; width: 150px; z-index: 2; animation: hold-sway 5.5s ease-in-out infinite; }
.core-proj { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 1; pointer-events: none; }
@keyframes hold-sway { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-3px); } }
.core-wordmark { font-family: var(--font-display); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.35em; text-indent: 0.35em; text-align: center; color: var(--on-paper-muted); margin: 10px 0 0; animation: rise-in 0.5s var(--ease-state) 0.24s both; }
.atlas-core { position: relative; width: 250px; height: 250px; transition: width 0.4s var(--ease), height 0.4s var(--ease); transform: translate3d(calc(var(--px, 0) * 0.45px), calc(var(--py, 0) * 0.45px), 0); }
/* Neural Core: red viva en Canvas (ver js/components/neural-core.js).
   El canvas dibuja nodos, conexiones, pulsos, partículas y ondas;
   body[data-atlas-state] sigue siendo la fuente de estado (vía MutationObserver).
   Caracteres por estado (mismo organismo): esperando=respira, escuchando=recibe,
   pensando=procesa (contraído), hablando=expresa (pulsos desde el centro). */
#neuralCanvas { position: absolute; inset: 0; width: 100%; height: 100%; border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, #111808 0%, #111808 58%, rgba(17,24,8,0) 78%);
  box-shadow: 0 16px 40px rgba(17,24,8,0.25);
}

/* Escenario: la ilustración Canva como base, canvas vivo encima */
.scene { position: relative; width: min(640px, 96vw); margin: 0 auto 82px; }
.scene-img { width: 100%; display: block; animation: scene-breathe 6s ease-in-out infinite, scene-life 4.5s ease-in-out infinite; }
#canvaOrb { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.scene::after { content: ""; position: absolute; border-radius: 50%; pointer-events: none;
  left: calc(73.6% - 130px); top: calc(46.3% - 130px); width: 260px; height: 260px;
  background: radial-gradient(closest-side, rgba(255,235,170,0.22), transparent 72%);
  animation: orb-glow 4.5s ease-in-out infinite;
}
@keyframes scene-breathe { 0%,100% { transform: scale(1); } 50% { transform: scale(1.008); } }
@keyframes scene-life { 0%,100% { filter: brightness(1); } 50% { filter: brightness(1.05); } }
@keyframes orb-glow { 0%,100% { opacity: 0.55; transform: scale(1); } 50% { opacity: 1; transform: scale(1.06); } }
.core-state { color: var(--ink-dim); margin: 18px 0 0; font-size: 0.95rem; min-height: 1.5em; text-align: center; transition: opacity 0.18s ease; }

/* Durante la conversación el núcleo crece: solo él importa */
body[data-conversing="true"] .core-stage .atlas-core { width: 260px; height: 260px; }

/* ── Botón principal ── */
.talk-row { display: flex; gap: 10px; justify-content: center; margin: 14px 0 6px; }
.talk-btn {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--accent);
  color: var(--on-accent); border: none; border-radius: 999px; padding: 16px 36px;
  font-size: 1rem; font-weight: 600; cursor: pointer;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.5);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s;
}
.talk-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(0, 0, 0, 0.55); }
.talk-btn:active { transform: translateY(0) scale(0.98); }
.talk-btn.listening { background: var(--accent); box-shadow: 0 10px 28px rgba(0, 0, 0, 0.5), inset 0 0 0 2px color-mix(in srgb, var(--on-accent) 55%, transparent); }
.talk-btn.small { padding: 12px 26px; font-size: 0.93rem; }
#view-modo .talk-btn { background: var(--bg); color: var(--paper); }
#view-modo .talk-btn:hover { box-shadow: 0 14px 32px rgba(17, 24, 8, 0.28); }
.ghost-btn { background: transparent; color: var(--on-paper); border: 1px solid var(--line-on-paper); border-radius: 999px; padding: 11px 22px; cursor: pointer; font-weight: 500; transition: color 0.2s, border-color 0.2s, background 0.2s, transform 0.15s; }
.ghost-btn:hover { color: var(--on-paper); border-color: var(--on-paper); background: color-mix(in srgb, var(--on-paper) 6%, transparent); }
.back-btn { margin-top: 26px; }
.link-btn { background: none; border: none; color: var(--on-paper-muted); cursor: pointer; font-size: 0.82rem; font-weight: 500; padding: 6px 4px; transition: color 0.2s; }
.link-btn:hover { color: var(--on-paper); }

/* ── Conversación: aire, sin caja ── */
.messages { display: flex; flex-direction: column; gap: 12px; margin: 30px 0 14px; max-height: 340px; overflow-y: auto; padding-right: 4px; scrollbar-width: thin; scrollbar-color: color-mix(in srgb, var(--on-paper) 30%, transparent) transparent; }
.messages::-webkit-scrollbar { width: 8px; }
.messages::-webkit-scrollbar-track { background: transparent; }
.messages::-webkit-scrollbar-thumb { background: color-mix(in srgb, var(--on-paper) 30%, transparent); border-radius: 99px; }
.messages:empty { margin: 0; }
.msg { max-width: 88%; padding: 10px 4px; font-size: 0.96rem; line-height: 1.6; animation: in 0.3s var(--ease); border-bottom: 1px solid var(--line-on-paper); }
@keyframes in { from { opacity: 0; transform: translateY(8px); } }
.msg.user { align-self: flex-end; text-align: right; color: var(--on-paper); }
.msg.atlas { align-self: flex-start; color: var(--on-paper); }
.msg .who { display: block; font-size: 0.68rem; color: var(--on-paper-muted); margin-bottom: 2px; letter-spacing: 0.09em; text-transform: uppercase; }
.msg.system { align-self: center; text-align: center; font-size: 0.83rem; color: var(--on-paper-muted); border-bottom: none; padding: 6px 4px; max-width: 100%; }
.msg.typing { display: flex; gap: 6px; align-items: center; border: none; padding: 12px 4px; }
.msg.typing i { width: 7px; height: 7px; border-radius: 50%; background: var(--on-paper-muted); animation: blink 1.2s infinite; }
.msg.typing i:nth-child(2) { animation-delay: 0.2s; } .msg.typing i:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink { 0%,100% { opacity: 0.3; } 50% { opacity: 1; } }
.chat-input { display: flex; gap: 10px; align-items: center; }
.chat-input input { flex: 1; background: transparent; border: none; border-bottom: 1px solid var(--line-on-paper); border-radius: 0; padding: 12px 4px; color: var(--on-paper); font-size: 0.95rem; transition: border-color 0.2s; }
.chat-input input:focus { outline: none; border-bottom-color: var(--on-paper); }
.chat-input input::placeholder { color: var(--on-paper-muted); }
.chat-input button { background: var(--bg); color: var(--paper); border: none; border-radius: 50%; width: 46px; height: 46px; min-height: 0; font-size: 1.2rem; cursor: pointer; flex: none; transition: background 0.2s var(--ease), transform 0.15s var(--ease); }
.chat-input button:hover { background: color-mix(in srgb, var(--bg) 82%, var(--paper)); }
.chat-input button:active { transform: scale(0.94); }
.chat-meta { display: flex; justify-content: flex-end; margin-top: 4px; }

/* Etiqueta secundaria de perfil bajo el botón Hablar */
.profile-tag { text-align: center; color: var(--on-paper-muted); font-size: 0.8rem; margin: 2px 0 0; }
.profile-tag[hidden] { display: none; }

/* Transcripción: secundaria y plegable, nunca protagonista */
.transcript { margin-top: 18px; border-top: 1px solid var(--line-on-paper); padding-top: 12px; }
.transcript summary { cursor: pointer; color: var(--on-paper-muted); font-size: 0.85rem; font-weight: 500; list-style: none; text-align: center; padding: 8px; transition: color 0.2s; }
.transcript summary::-webkit-details-marker { display: none; }
.transcript summary:hover { color: var(--on-paper); }
.transcript summary::before { content: "▸ "; }
.transcript[open] summary::before { content: "▾ "; }
.transcript .messages { margin-top: 12px; max-height: 260px; font-size: 0.9rem; }

/* Selector de modo segmentado: solo texto, una fila */
.mode-seg { display: flex; justify-content: center; gap: 4px; margin: 10px auto 0; max-width: 520px; }
.seg-opt { flex: 1 1 0; min-width: 0; background: transparent; border: none; color: var(--on-paper-muted); font-size: 0.85rem; font-weight: 500; padding: 9px 6px; border-radius: 10px; cursor: pointer; white-space: nowrap; transition: color 0.2s var(--ease), background 0.2s var(--ease); }
.seg-opt:hover { color: var(--on-paper); }
.seg-opt.is-active { color: var(--paper); background: var(--bg); }
.seg-opt:active { transform: scale(0.96); }
.tab:active, .link-btn:active, .ghost-btn:active, .chip:active, .start-row:active { transform: scale(0.97); }
.home-progress { text-align: center; margin: 20px 0 0; }

/* Entrada: una sola vez al cargar, escalonada y leve */
@keyframes rise-in { from { opacity: 0; transform: translateY(8px); } }
.greeting { animation: rise-in 0.5s var(--ease-state) 0.05s both; }
.core-wrap { animation: rise-in 0.5s var(--ease-state) 0.12s both; }
.talk-row { animation: rise-in 0.5s var(--ease-state) 0.2s both; }
.mode-seg { animation: rise-in 0.5s var(--ease-state) 0.28s both; }

/* Inicios y modos: lista con una sola línea */
.start-list { display: flex; flex-direction: column; margin-top: 22px; }
.start-row {
  display: flex; align-items: center; gap: 14px; width: 100%; text-align: left;
  background: var(--paper-2); border: 1px solid var(--line-on-paper); border-radius: 14px;
  color: var(--on-paper); padding: 15px 16px; margin-top: 10px; cursor: pointer;
  box-shadow: var(--shadow-soft);
  transition: background 0.2s var(--ease), transform 0.2s var(--ease), box-shadow 0.25s var(--ease);
}
.start-row:hover { background: var(--paper-2); transform: translateY(-1px); box-shadow: var(--shadow-lift); }
.start-row:hover .row-chev { transform: translateX(4px); color: var(--on-paper); }
.row-text { flex: 1; display: flex; flex-direction: column; gap: 2px; }
.row-text strong { font-size: 1rem; font-weight: 600; }
.row-text small { color: var(--on-paper-muted); font-size: 0.83rem; }
.row-chev { color: var(--on-paper-muted); font-size: 1.05rem; transition: transform 0.25s var(--ease), color 0.2s; }
.mode-actions { display: flex; gap: 10px; flex-wrap: wrap; margin: 24px 0 6px; }
.tips { margin-top: 26px; }
.tips ul { margin: 0; padding-left: 18px; color: var(--on-paper-muted); font-size: 0.9rem; line-height: 1.7; }
.tips li { margin: 6px 0; }
.add-btn { background: var(--bg); color: var(--paper); border: none; border-radius: 999px; padding: 12px 26px; font-weight: 600; font-size: 0.93rem; cursor: pointer; transition: background 0.2s var(--ease), transform 0.15s var(--ease); }
.add-btn:hover:not(:disabled) { background: color-mix(in srgb, var(--bg) 82%, var(--paper)); }
.add-btn:active:not(:disabled) { transform: scale(0.97); }
.add-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.material-list { list-style: none; margin: 20px 0 0; padding: 0; }
.material-list li { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 13px 14px; border: 1px solid var(--line-on-paper); border-radius: 12px; margin-top: 8px; background: var(--paper-2); font-size: 0.9rem; transition: box-shadow 0.25s var(--ease), transform 0.2s var(--ease); }
.material-list li:hover { box-shadow: var(--shadow-soft); }
.material-list small { color: var(--on-paper-muted); white-space: nowrap; }

/* ── Biblioteca: filtros, grupos y acciones (lista, no dashboard) ── */
.lib-prep { color: var(--on-paper-muted); font-size: 0.85rem; margin: 0 0 4px; }
.lib-prep[hidden] { display: none; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin: 16px 0 4px; }
.chip { background: transparent; color: var(--on-paper-muted); border: 1px solid var(--line-on-paper); border-radius: 999px; padding: 7px 15px; font-size: 0.82rem; font-weight: 500; cursor: pointer; transition: color 0.2s, border-color 0.2s, background 0.2s; }
.chip:hover { color: var(--on-paper); border-color: var(--on-paper); }
.chip.is-active { color: var(--paper); border-color: var(--bg); background: var(--bg); }
.lib-studybar { display: flex; align-items: center; gap: 12px; margin: 14px 0 0; }
.lib-studybar[hidden] { display: none; }
.lib-empty[hidden] { display: none; }
.lib-empty { text-align: center; padding: 26px 0 6px; color: var(--on-paper-muted); }
.lib-empty p { margin: 4px 0; }
.lib-group-title { font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--on-paper-muted); margin: 22px 0 0; font-weight: 600; }
.lib-item { align-items: flex-start; }
.lib-check { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--bg); flex: none; cursor: pointer; }
.lib-icon { font-size: 1.25rem; flex: none; }
.lib-body { flex: 1; display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.lib-body strong { font-size: 0.92rem; font-weight: 600; overflow-wrap: anywhere; }
.lib-body small { white-space: normal; }
.lib-status { color: var(--on-paper-muted); }
.lib-status.st-listo { color: var(--on-paper); font-weight: 600; }
.lib-status.st-visual, .lib-status.st-pendiente { color: var(--on-paper-muted); }
.lib-status.st-error, .lib-status.st-rechazado, .lib-status.st-orphan { color: var(--on-paper); font-weight: 600; }
.lib-assoc { color: var(--on-paper-muted); font-size: 0.72rem; letter-spacing: 0.06em; }
.lib-actions { display: flex; gap: 4px 12px; flex-wrap: wrap; flex: none; }
.danger { color: var(--on-paper); font-weight: 600; }
.prep-block { border: 1px solid var(--line-on-paper); border-radius: 14px; margin-top: 16px; overflow: hidden; background: var(--paper-2); box-shadow: var(--shadow-soft); }
.prep-block summary { cursor: pointer; padding: 13px 15px; display: flex; flex-direction: column; gap: 2px; list-style: none; }
.prep-block summary::-webkit-details-marker { display: none; }
.prep-block summary strong { font-size: 0.95rem; }
.prep-block summary small { color: var(--on-paper-muted); }
.prep-body { padding: 0 15px 15px; display: flex; flex-direction: column; gap: 10px; }
.prep-mats { list-style: none; margin: 0; padding: 0; font-size: 0.86rem; color: var(--on-paper-muted); }
.prep-mats li { padding: 3px 0; }
@media (max-width: 600px) {
  .lib-item { flex-wrap: wrap; }
  .lib-actions { width: 100%; }
}

/* ── Mi progreso: texto y líneas, sin tarjetas ── */
.side-block { padding: 0; }
.level-row { display: flex; align-items: center; gap: 10px; }
.level-badge { font-weight: 800; font-size: 0.8rem; color: var(--on-paper); flex: none; }
.xp-bar { flex: 1; height: 5px; border-radius: 99px; background: color-mix(in srgb, var(--on-paper) 12%, transparent); overflow: hidden; }
.xp-bar div { height: 100%; background: var(--bg); border-radius: 99px; transition: width 0.6s var(--ease); }
#xpText { font-size: 0.78rem; color: var(--on-paper-muted); }
.stats { display: flex; gap: 20px; margin-top: 14px; }
.stats strong { font-size: 1.15rem; font-weight: 650; }
.stats small { color: var(--on-paper-muted); font-size: 0.72rem; margin-left: 5px; }
.side-block h2 { font-size: 0.75rem; margin: 0 0 6px; color: var(--on-paper-muted); text-transform: uppercase; letter-spacing: 0.12em; font-weight: 600; }
#view-progreso .side-block { margin-top: 26px; }
#view-progreso .side-note { margin-top: 22px; }
#view-progreso .back-btn { margin-top: 26px; }
.side-note { color: var(--on-paper-muted); font-size: 0.83rem; margin: 0; line-height: 1.6; border-top: 1px solid var(--line-on-paper); padding-top: 22px; }

/* ── Durante la conversación: solo ATLAS ── */
body[data-conversing="true"] .tabs,
body[data-conversing="true"] .chat-meta,
body[data-conversing="true"] .foot { display: none; }

/* ── Modales ── */
.modal-backdrop { position: fixed; inset: 0; background: rgba(10, 14, 5, 0.7); backdrop-filter: blur(6px); display: flex; align-items: center; justify-content: center; z-index: 50; padding: 18px; animation: fade 0.25s var(--ease); }
.modal-backdrop[hidden] { display: none; }
@keyframes fade { from { opacity: 0; } }
.modal { background: var(--paper); border: 1px solid var(--line-on-paper); border-radius: 22px; padding: 30px; max-width: 460px; width: 100%; box-shadow: var(--shadow-lift); animation: rise 0.3s var(--ease); max-height: 90vh; overflow-y: auto; scrollbar-width: thin; scrollbar-color: color-mix(in srgb, var(--on-paper) 30%, transparent) transparent; }
.modal::-webkit-scrollbar { width: 8px; }
.modal::-webkit-scrollbar-track { background: transparent; }
.modal::-webkit-scrollbar-thumb { background: color-mix(in srgb, var(--on-paper) 30%, transparent); border-radius: 99px; }
.modal-small { max-width: 400px; }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } }
.modal h2 { margin: 0 0 6px; font-size: 1.3rem; font-family: var(--font-display); font-weight: 700; }
.modal-sub { color: var(--on-paper-muted); font-size: 0.87rem; line-height: 1.6; margin: 0 0 6px; }
.file-drop { display: block; border: 1px dashed color-mix(in srgb, var(--on-paper) 35%, transparent); border-radius: 16px; padding: 28px 22px; text-align: center; cursor: pointer; margin: 16px 0; transition: border-color 0.2s, background 0.2s; }
.file-drop:hover { border-color: var(--on-paper); background: color-mix(in srgb, var(--on-paper) 5%, transparent); }
.file-drop input { display: none; }
.file-drop-title { display: block; font-weight: 600; }
.file-drop-sub { display: block; font-size: 0.76rem; color: var(--on-paper-muted); margin-top: 6px; }
.file-name { font-size: 0.85rem; color: var(--on-paper); margin: 0 0 6px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 18px; flex-wrap: wrap; }
.text-input { width: 100%; background: transparent; border: none; border-bottom: 1px solid var(--line-on-paper); border-radius: 0; padding: 13px 2px; color: var(--on-paper); font-size: 1rem; margin-top: 10px; transition: border-color 0.2s; }
.text-input:focus { outline: none; border-bottom-color: var(--on-paper); }
.form-msg { font-size: 0.84rem; color: var(--on-paper); font-weight: 600; margin: 10px 0 0; min-height: 1.2em; }
.form-msg[hidden] { display: none; }
.foto-choices { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 16px 0 4px; }
.choice-btn { display: flex; align-items: center; justify-content: center; background: transparent; border: 1px solid var(--line-on-paper); color: var(--on-paper); border-radius: 14px; padding: 14px; cursor: pointer; font-size: 0.88rem; font-weight: 600; transition: border-color 0.2s, box-shadow 0.25s var(--ease); text-align: center; }
.choice-btn:hover { border-color: var(--on-paper); box-shadow: var(--shadow-soft); }
.choice-btn input { display: none; }
.camera-box video { width: 100%; border-radius: 14px; margin-top: 12px; background: #000; aspect-ratio: 4/3; object-fit: cover; }
.preview-box img { width: 100%; border-radius: 14px; margin-top: 12px; max-height: 260px; object-fit: cover; }
.camera-box[hidden], .preview-box[hidden] { display: none; }

.foot { text-align: center; padding: 26px 18px 34px; color: var(--on-paper-muted); font-size: 0.74rem; }

/* Transición entre vistas: un solo fade sobrio al mostrar cada sección */
main section { animation: viewIn 0.35s var(--ease-state); }
@keyframes viewIn { from { opacity: 0; transform: translateY(6px); } }

/* ── Responsive: en móvil, más simple y al alcance del pulgar ── */
@media (max-width: 980px) {
  .layout { padding: 26px 18px 60px; }
  .topbar { flex-wrap: wrap; gap: 8px; padding: 12px 16px; }
  .tabs { order: 3; width: 100%; overflow-x: auto; flex-wrap: nowrap; }
}
@media (max-width: 600px) {
  .core-stage { width: auto; height: 280px; margin: 0 auto 72px; display: flex; flex-direction: column; align-items: center; }
  .core-stage .atlas-core { position: relative; right: auto; top: auto; width: 210px; height: 210px; }
  .core-mascot { position: static; width: 110px; margin-top: 8px; }
  .core-computer, .core-proj { display: none; }
  body[data-conversing="true"] .core-stage .atlas-core { width: 214px; height: 214px; }
  .talk-btn { width: 100%; justify-content: center; padding: 19px; font-size: 1.05rem; }
  .talk-row { position: sticky; bottom: 12px; z-index: 5; }
  .talk-row .talk-btn { box-shadow: 0 14px 40px rgba(0,0,0,0.6); }
  .foto-choices { grid-template-columns: 1fr; }
  .hero { border-radius: 0 0 24px 24px; padding-top: 20px; padding-bottom: 26px; }
  .mode-seg { overflow-x: auto; }
  .seg-opt { font-size: 0.78rem; padding: 8px 4px; }
  .messages { max-height: 300px; }
  .greeting { font-size: 0.98rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .bg-orb { animation: none; }
  .atlas-core { transform: none; }
  .mascot .breathe, .mascot .sheen { animation: none; }
}