/* ==========================================================================
   IA Marista · sistema visual
   Identidad: azul y dorado marista · esquinas suaves · mascota San Marcelino Champagnat
   Tipografía: Plus Jakarta Sans (alojada en este servidor)
   ========================================================================== */
@font-face {
    font-family: "Plus Jakarta Sans";
    src: url("../fonts/plus-jakarta-sans-latin-ext-wght-normal.woff2") format("woff2");
    font-weight: 200 800; font-style: normal; font-display: swap;
    unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
    font-family: "Plus Jakarta Sans";
    src: url("../fonts/plus-jakarta-sans-latin-wght-normal.woff2") format("woff2");
    font-weight: 200 800; font-style: normal; font-display: swap;
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
    --blue-900: #0e2255;
    --blue-800: #142c66;
    --blue-700: #1d3f8f;
    --blue-600: #2c55b5;
    --blue-200: #c8d6f5;
    --blue-100: #e6edfb;
    --blue-50: #f3f6fd;
    --gold-600: #b57f0c;
    --gold-500: #e0a526;
    --gold-400: #f2c14e;
    --gold-100: #fdf1d1;
    --ink: #172036;
    --ink-2: #39435e;
    --muted: #5a6683;
    --line: #dfe5f2;
    --bg: #f4f6fc;
    --card: #ffffff;
    --ok: #16714a;
    --ok-bg: #e3f5ec;
    --err: #b3261e;
    --err-bg: #fdecea;
    --warn: #8a5a00;
    --warn-bg: #fff3d6;
    --r-sm: 10px;
    --r-md: 16px;
    --r-lg: 24px;
    --sh-1: 0 1px 2px rgba(20, 44, 102, .06), 0 6px 18px rgba(20, 44, 102, .06);
    --sh-2: 0 2px 4px rgba(20, 44, 102, .08), 0 14px 34px rgba(20, 44, 102, .12);
    --ease: cubic-bezier(.22, 1, .36, 1);
    --focus: 0 0 0 3px rgba(44, 85, 181, .35);
    --nav-h: 64px;
}

* { box-sizing: border-box; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
    margin: 0; background: var(--bg); color: var(--ink);
    font-family: "Plus Jakarta Sans", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6; min-height: 100vh; min-height: 100dvh; display: flex; flex-direction: column;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--blue-700); text-underline-offset: 3px; }
a:hover { color: var(--blue-900); }
h1, h2, h3 { font-weight: 800; letter-spacing: -.015em; color: var(--blue-900); }
h1 { font-size: clamp(1.55rem, 1.2rem + 1.4vw, 2.1rem); margin: .1rem 0 .35rem; line-height: 1.2; }
h2 { font-size: 1.2rem; margin: 0 0 .55rem; line-height: 1.3; }
h3 { font-size: 1.02rem; margin: .7rem 0 0; }
p { margin: .5rem 0; }
code, .mono { font-family: ui-monospace, "Cascadia Code", Consolas, "Courier New", monospace; font-size: .9em; }
code { background: var(--blue-50); border: 1px solid var(--line); padding: .08em .38em; border-radius: 6px; }
.muted { color: var(--muted); }
.small { font-size: .86rem; }
.center { text-align: center; }
.num { text-align: right; }
.icon { flex: none; vertical-align: -.2em; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
:focus-visible { outline: none; box-shadow: var(--focus); border-radius: 6px; }
.skip-link { position: absolute; left: -999px; top: .5rem; background: #fff; padding: .5rem .9rem; border-radius: var(--r-sm); z-index: 100; }
.skip-link:focus { left: .5rem; }

/* ---------- Cabecera y navegación ---------- */
.topbar {
    position: sticky; top: 0; z-index: 40; color: #fff;
    background: linear-gradient(120deg, var(--blue-900), var(--blue-700) 70%);
    box-shadow: 0 2px 14px rgba(14, 34, 85, .25);
}
.topbar-inner { max-width: 1160px; margin: 0 auto; padding: .55rem 1rem; display: flex; align-items: center; gap: 1rem; min-height: var(--nav-h); }
.brand { color: #fff; text-decoration: none; font-weight: 800; font-size: 1.12rem; display: inline-flex; align-items: center; gap: .55rem; letter-spacing: -.01em; }
.brand:hover { color: #fff; }
.brand-mark {
    width: 36px; height: 36px; border-radius: 12px; display: grid; place-items: center; overflow: hidden;
    background: var(--gold-400); box-shadow: inset 0 -3px 0 rgba(0, 0, 0, .12);
}
.brand-mark .avatar-mini { width: 32px; height: 32px; margin-top: 3px; }
.brand-lg { font-size: 1.5rem; color: #fff; }
.nav { display: flex; gap: .2rem; flex: 1; align-items: center; }
.nav a {
    color: #dbe5ff; text-decoration: none; padding: .5rem .8rem; border-radius: 999px; font-size: .94rem; font-weight: 600;
    display: inline-flex; align-items: center; gap: .45rem; min-height: 40px; transition: background .2s var(--ease), color .2s;
}
.nav a:hover { background: rgba(255, 255, 255, .12); color: #fff; }
.nav a.active { background: #fff; color: var(--blue-800); }
.nav .badge-dot { background: var(--gold-400); color: var(--blue-900); font-size: .72rem; font-weight: 800; border-radius: 999px; padding: 0 .4rem; min-width: 1.2rem; text-align: center; }
.userbox { display: flex; align-items: center; gap: .6rem; margin: 0; margin-left: auto; }
.avatar-chip { width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; background: rgba(255, 255, 255, .18); font-weight: 800; font-size: .95rem; }
.who { line-height: 1.2; font-size: .9rem; font-weight: 700; }
.who small { display: block; font-weight: 500; opacity: .8; font-size: .76rem; }

.container { width: 100%; max-width: 1160px; margin: 0 auto; padding: 1.4rem 1rem 2.4rem; flex: 1; animation: page-in .35s var(--ease) both; }
.footer { text-align: center; color: var(--muted); font-size: .8rem; padding: 1rem 1rem 1.4rem; }

/* ---------- Superficies ---------- */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-md); padding: 1.15rem 1.3rem; box-shadow: var(--sh-1); }
.card.flat { box-shadow: none; }
.narrow { max-width: 480px; margin: 3rem auto; }
.big-code { font-size: 4rem; font-weight: 800; color: var(--blue-700); margin: 0; line-height: 1; }
.stack > * + * { margin-top: .9rem; }
.section { margin-top: 1.8rem; }
.row-between { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; flex-wrap: wrap; }
.actions { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; }
.actions form, form.inline { display: inline; margin: 0; }
.back-link { display: inline-flex; align-items: center; gap: .3rem; color: var(--muted); text-decoration: none; font-weight: 600; font-size: .9rem; }
.back-link:hover { color: var(--blue-700); }
.page-head { margin-bottom: 1.1rem; }
.eyebrow { text-transform: uppercase; letter-spacing: .09em; font-size: .72rem; font-weight: 800; color: var(--gold-600); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1rem; margin-top: 1rem; }
.list { list-style: none; padding: 0; margin: 0; }
.list li { padding: .65rem 0; border-bottom: 1px solid var(--line); }
.list li:last-child { border-bottom: 0; }

.tile {
    display: flex; flex-direction: column; gap: .35rem; background: var(--card); border: 1px solid var(--line); border-radius: var(--r-md);
    padding: 1.2rem 1.3rem; text-decoration: none; color: var(--ink); box-shadow: var(--sh-1); position: relative; overflow: hidden;
    transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .2s;
    animation: rise .45s var(--ease) both; animation-delay: calc(var(--i, 0) * 70ms);
}
.tile:hover { transform: translateY(-3px); box-shadow: var(--sh-2); border-color: var(--blue-200); color: var(--ink); }
.tile:active { transform: translateY(-1px) scale(.99); }
.tile h2 { margin: 0; display: flex; align-items: center; gap: .5rem; }
.tile p { margin: 0; color: var(--muted); font-size: .94rem; }
.tile-ico { width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; margin-bottom: .45rem; background: var(--blue-100); color: var(--blue-700); }
.tile-ico.gold { background: var(--gold-100); color: var(--gold-600); }
.tile-ico.green { background: var(--ok-bg); color: var(--ok); }
.tile-ico.red { background: var(--err-bg); color: var(--err); }
.tile .go { margin-top: auto; padding-top: .5rem; color: var(--blue-700); font-weight: 700; font-size: .9rem; display: inline-flex; align-items: center; gap: .3rem; }
.tile:hover .go .icon { transform: translateX(3px); }
.tile .go .icon { transition: transform .2s var(--ease); }

/* ---------- Formularios ---------- */
label { display: block; font-weight: 700; font-size: .9rem; color: var(--ink-2); }
input, select, textarea {
    display: block; width: 100%; margin-top: .35rem; padding: .62rem .8rem; min-height: 44px; font: inherit; font-weight: 500; color: var(--ink);
    background: #fff; border: 1.5px solid #c9d2e8; border-radius: var(--r-sm); transition: border-color .15s, box-shadow .15s;
}
input::placeholder, textarea::placeholder { color: #7b87a3; }
input:hover, select:hover, textarea:hover { border-color: #aab7d8; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--blue-600); box-shadow: var(--focus); }
textarea { resize: vertical; line-height: 1.5; }
.input-sm { display: inline-block; width: 9rem; margin: 0 .3rem 0 0; padding: .3rem .5rem; min-height: 36px; font-size: .85rem; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: .95rem 1.1rem; }
.hint { font-weight: 500; color: var(--muted); font-size: .82rem; margin-top: .25rem; }

.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: .5rem; font: inherit; font-weight: 700; font-size: .95rem; cursor: pointer;
    text-decoration: none; padding: .6rem 1.1rem; min-height: 44px; border-radius: 999px; border: 1.5px solid #c9d2e8; background: #fff; color: var(--ink);
    transition: transform .15s var(--ease), box-shadow .2s, background .2s, border-color .2s; -webkit-tap-highlight-color: transparent;
}
.btn:hover { border-color: var(--blue-600); color: var(--blue-800); transform: translateY(-1px); box-shadow: 0 6px 14px rgba(20, 44, 102, .1); }
.btn:active { transform: scale(.97); box-shadow: none; }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-primary { background: linear-gradient(180deg, var(--blue-600), var(--blue-700)); border-color: var(--blue-700); color: #fff; box-shadow: 0 4px 12px rgba(29, 63, 143, .28); }
.btn-primary:hover { background: linear-gradient(180deg, var(--blue-700), var(--blue-800)); color: #fff; border-color: var(--blue-800); }
.btn-gold { background: linear-gradient(180deg, var(--gold-400), var(--gold-500)); border-color: #c98f14; color: #3a2800; box-shadow: 0 4px 12px rgba(224, 165, 38, .35); }
.btn-gold:hover { color: #2a1d00; border-color: #b57f0c; }
.btn-danger { color: var(--err); border-color: #e6b8b4; }
.btn-danger:hover { background: var(--err-bg); border-color: var(--err); color: var(--err); }
.btn-ghost { background: transparent; border-color: transparent; color: inherit; box-shadow: none; }
.btn-ghost:hover { background: rgba(23, 32, 54, .06); border-color: transparent; box-shadow: none; }
.topbar .btn-ghost { color: #fff; }
.topbar .btn-ghost:hover { background: rgba(255, 255, 255, .14); color: #fff; }
.btn-sm { padding: .3rem .8rem; font-size: .85rem; min-height: 36px; }
.btn-block { width: 100%; }
.btn-icon { width: 44px; padding: 0; }
.btn .icon { margin: 0; }

.alert { padding: .8rem 1rem; border-radius: var(--r-sm); margin-bottom: 1rem; border: 1px solid; font-weight: 500; animation: rise .35s var(--ease) both; }
.alert-success { background: var(--ok-bg); border-color: #b3dfc6; color: var(--ok); }
.alert-error { background: var(--err-bg); border-color: #f0bdb8; color: var(--err); }
.alert-info { background: var(--blue-50); border-color: var(--blue-200); color: var(--blue-800); }
.badge { display: inline-flex; align-items: center; gap: .25rem; padding: .12rem .65rem; border-radius: 999px; font-size: .78rem; font-weight: 700; background: var(--blue-100); color: var(--blue-800); white-space: nowrap; }
.badge-ok { background: var(--ok-bg); color: var(--ok); }
.badge-err { background: var(--err-bg); color: var(--err); }
.badge-warn { background: var(--warn-bg); color: var(--warn); }
.badge-gold { background: var(--gold-100); color: var(--gold-600); }

.table-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--line); border-radius: var(--r-md); box-shadow: var(--sh-1); }
table { border-collapse: collapse; width: 100%; font-size: .93rem; }
th, td { padding: .7rem .9rem; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--blue-50); font-weight: 800; color: var(--blue-900); white-space: nowrap; font-size: .82rem; text-transform: uppercase; letter-spacing: .04em; }
tr:last-child td { border-bottom: 0; }
tbody tr { transition: background .15s; }
tbody tr:hover { background: #fafbff; }
td.wrap { white-space: normal; max-width: 460px; }

.subnav { display: flex; gap: .3rem; flex-wrap: wrap; margin: 0 0 1.1rem; padding: .3rem; background: #fff; border: 1px solid var(--line); border-radius: 999px; width: fit-content; max-width: 100%; box-shadow: var(--sh-1); }
.subnav a { padding: .45rem 1rem; border-radius: 999px; text-decoration: none; font-weight: 700; font-size: .9rem; color: var(--ink-2); display: inline-flex; gap: .4rem; align-items: center; min-height: 38px; }
.subnav a:hover { background: var(--blue-50); }
.subnav a.active { background: var(--blue-700); color: #fff; }

/* ---------- Planificación ---------- */
.plan-doc { padding: 1.6rem 1.9rem; }
.plan-doc h2 { color: var(--blue-700); margin-top: 1.6rem; padding-bottom: .3rem; border-bottom: 2px solid var(--blue-100); }
.plan-doc h3 { color: var(--blue-800); margin-top: 1rem; }
.plan-doc p { margin: .5rem 0; }
.plan-doc ul, .plan-doc ol { margin: .4rem 0 .6rem 1.2rem; padding-left: .8rem; }
.plan-doc .table-wrap { margin: .7rem 0; box-shadow: none; }
.plan-doc blockquote { margin: .6rem 0; padding: .4rem 1rem; border-left: 4px solid var(--gold-500); background: #fffaf0; border-radius: 0 var(--r-sm) var(--r-sm) 0; }
/* Hoja del Modelo T (misma disposición que las plantillas del colegio) */
table.tsheet { table-layout: fixed; font-size: .93rem; }
table.tsheet th, table.tsheet td, table.tsheet tr:last-child td { border: 1px solid #6b7aa0; padding: .6rem .8rem; vertical-align: top; text-align: left; }
table.tsheet tbody tr:hover { background: transparent; }
table.tsheet th { white-space: normal; letter-spacing: .03em; }
table.tsheet .ts-title { text-align: center; background: var(--blue-100); color: var(--blue-800); font-size: 1.02rem; padding: .75rem; }
table.tsheet .ts-h { text-align: center; background: var(--blue-50); font-size: .78rem; }
table.tsheet .ts-head p { margin: .2rem 0; }
table.tsheet ul { margin: .25rem 0 .45rem 1rem; padding-left: .7rem; }
table.tsheet .ts-body { min-height: 5rem; }
table.tsheet .ts-group { font-weight: 800; margin: .55rem 0 .1rem; color: var(--blue-800); }
table.tsheet .ts-group:first-child { margin-top: 0; }
table.tsheet .ts-act-title { font-weight: 800; margin: .9rem 0 .2rem; color: var(--blue-800); }
table.tsheet .ts-act-title:first-child { margin-top: 0; }
.notes-box { margin-top: .9rem; background: #fffaf0; border-color: var(--gold-500); }
.notes-box h3 { display: flex; align-items: center; gap: .4rem; margin: 0 0 .3rem; }
.notes-box ul { margin: 0 0 0 1.1rem; padding-left: .6rem; }
fieldset.act-edit { border: 1px solid var(--line); border-radius: var(--r-sm); padding: .8rem 1rem 1rem; margin: 0; }
fieldset.act-edit legend { font-weight: 800; color: var(--blue-800); padding: 0 .4rem; }
fieldset.act-edit > * + * { margin-top: .7rem; }
.subnav a .badge { padding: .05rem .4rem; }
details > summary { cursor: pointer; font-weight: 700; padding: .2rem 0; }
details[open] > summary { margin-bottom: .4rem; }

/* ==========================================================================
   Avatar de San Marcelino Champagnat (public/assets/img/avatar.svg)
   Cada parte del SVG llega como clase a-<id> (a-head, a-eye-left, a-mouth, a-arm-right…).
   Los pivotes están en coordenadas del SVG original (viewBox 600×600).
   ========================================================================== */
.avatar, .avatar-mini { display: block; overflow: visible; }
.avatar { width: 100%; height: auto; }
.avatar-mini { width: 36px; height: 36px; }
.avatar-frame .avatar { clip-path: circle(50% at 50% 50%); }

.avatar .a-avatar { transform-origin: 300px 490px; animation: av-breathe 5s ease-in-out infinite; }
.avatar .a-head { transform-origin: 300px 260px; animation: av-sway 7s ease-in-out infinite; }
.avatar .a-eye-left { transform-origin: 266px 180px; animation: av-blink 5.5s infinite; }
.avatar .a-eye-right { transform-origin: 330px 173px; animation: av-blink 5.5s infinite; }
.avatar .a-mouth { transform-origin: 307px 222px; }
.avatar .a-arm-right { transform-origin: 343px 286px; }
.avatar .a-brow-left, .avatar .a-brow-right { transition: transform .35s var(--ease); }
.avatar .a-eye-left ellipse:not(:first-child), .avatar .a-eye-right ellipse:not(:first-child) { transition: transform .4s var(--ease); }

.avatar[data-state="thinking"] .a-head { animation: av-think 3.2s ease-in-out infinite; }
.avatar[data-state="thinking"] .a-brow-left { transform: translateY(-5px); }
.avatar[data-state="thinking"] .a-brow-right { transform: translateY(-9px) rotate(-6deg); }
.avatar[data-state="thinking"] .a-eye-left ellipse:not(:first-child),
.avatar[data-state="thinking"] .a-eye-right ellipse:not(:first-child) { transform: translate(5px, -5px); }

.avatar[data-state="speaking"] .a-head { animation: av-nod 1.1s ease-in-out infinite; }
.avatar[data-state="speaking"] .a-mouth { animation: av-talk .3s ease-in-out infinite alternate; }
.avatar[data-state="speaking"] .a-brow-left, .avatar[data-state="speaking"] .a-brow-right { transform: translateY(-3px); }
.avatar[data-state="speaking"] .a-arm-right { animation: av-gesture 1.8s ease-in-out infinite; }

.avatar[data-state="listening"] .a-head { animation: av-listen 2.6s ease-in-out infinite; }
.avatar[data-state="listening"] .a-brow-left, .avatar[data-state="listening"] .a-brow-right { transform: translateY(-4px); }
.avatar[data-state="listening"] .a-eye-left, .avatar[data-state="listening"] .a-eye-right { scale: 1.1; }

/* Marco del avatar */
.avatar-frame {
    position: relative; border-radius: 50%; aspect-ratio: 1; overflow: visible;
    background: radial-gradient(circle at 50% 35%, #fff 0%, var(--blue-100) 60%, var(--blue-200) 100%);
    box-shadow: inset 0 0 0 4px #fff, 0 0 0 2px var(--blue-200), var(--sh-1);
}
.avatar-frame::after { content: ""; position: absolute; inset: -8px; border-radius: 50%; border: 3px solid transparent; pointer-events: none; }
.avatar-frame[data-state="speaking"]::after { border-color: var(--gold-400); animation: ring 1.2s ease-out infinite; }
.avatar-frame[data-state="listening"]::after { border-color: #e5484d; animation: ring 1.2s ease-out infinite; }
.avatar-frame[data-state="thinking"]::after { border-color: var(--blue-600); border-style: dashed; animation: spin 6s linear infinite; }

/* ---------- Portada (inicio) ---------- */
.hero {
    display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 1.5rem; padding: clamp(1.2rem, 3vw, 2rem);
    border-radius: var(--r-lg); color: #fff; position: relative; overflow: hidden;
    background: radial-gradient(120% 140% at 100% 0%, var(--blue-600) 0%, var(--blue-800) 55%, var(--blue-900) 100%);
    box-shadow: var(--sh-2);
}
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; pointer-events: none; }
.hero::before { width: 260px; height: 260px; right: -60px; top: -90px; background: rgba(242, 193, 78, .16); }
.hero::after { width: 140px; height: 140px; left: 38%; bottom: -70px; background: rgba(255, 255, 255, .07); }
.hero h1 { color: #fff; margin: .2rem 0 .3rem; }
.hero p { color: #dbe5ff; margin: 0 0 1rem; max-width: 46ch; }
.hero .eyebrow { color: var(--gold-400); }
.hero-art { width: clamp(120px, 20vw, 190px); position: relative; z-index: 1; }
.hero-art .speech {
    position: absolute; right: 100%; top: 6%; margin-right: .4rem; white-space: nowrap; background: #fff; color: var(--blue-900); font-weight: 700;
    font-size: .85rem; padding: .45rem .8rem; border-radius: 14px 14px 4px 14px; box-shadow: var(--sh-1); animation: pop .5s var(--ease) .4s both;
}
.chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip { display: inline-flex; align-items: center; gap: .4rem; padding: .3rem .8rem; border-radius: 999px; background: rgba(255, 255, 255, .14); color: #fff; font-size: .84rem; font-weight: 600; }
.chip .icon { opacity: .9; }

/* ---------- Chat (tutor e inglés) ---------- */
.chat-layout { display: grid; grid-template-columns: 270px 1fr; gap: 1.2rem; align-items: start; }
.tutor-panel { position: sticky; top: calc(var(--nav-h) + 1rem); text-align: center; padding: 1.2rem 1rem 1rem; }
.tutor-panel .avatar-frame { width: min(190px, 100%); margin: 0 auto; }
.tutor-name { font-weight: 800; color: var(--blue-900); margin-top: .8rem; font-size: 1.05rem; }
.tutor-status { color: var(--muted); font-size: .86rem; min-height: 1.4em; margin: .1rem 0 .6rem; font-weight: 600; }
.tutor-panel .opt { display: flex; align-items: center; justify-content: space-between; gap: .6rem; text-align: left; padding: .55rem 0; border-top: 1px solid var(--line); font-size: .88rem; font-weight: 600; color: var(--ink-2); }
.switch { position: relative; width: 44px; height: 26px; flex: none; }
.switch input { position: absolute; inset: 0; opacity: 0; margin: 0; width: 100%; height: 100%; cursor: pointer; z-index: 2; min-height: 0; }
.switch span { position: absolute; inset: 0; border-radius: 999px; background: #c3cce3; transition: background .2s; }
.switch span::after { content: ""; position: absolute; left: 3px; top: 3px; width: 20px; height: 20px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0, 0, 0, .25); transition: transform .25s var(--ease); }
.switch input:checked + span { background: var(--blue-700); }
.switch input:checked + span::after { transform: translateX(18px); }
.switch input:focus-visible + span { box-shadow: var(--focus); }
.switch input:disabled + span { opacity: .5; }
.panel-note { font-size: .78rem; color: var(--muted); text-align: left; margin-top: .7rem; line-height: 1.45; }

.chat { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); display: flex; flex-direction: column; box-shadow: var(--sh-1); overflow: hidden; }
.chat-head { display: none; align-items: center; gap: .8rem; padding: .7rem 1rem; border-bottom: 1px solid var(--line); background: var(--blue-50); }
.chat-head .avatar-frame { width: 52px; flex: none; }
.chat-head .tutor-name { margin: 0; font-size: .98rem; }
.chat-head .tutor-status { margin: 0; }
.messages { padding: 1.1rem; min-height: 320px; max-height: min(62vh, 640px); overflow-y: auto; display: flex; flex-direction: column; gap: .9rem; scroll-behavior: smooth; background: linear-gradient(180deg, #fbfcff, #fff 120px); }
.msg { display: flex; gap: .6rem; max-width: 86%; animation: pop .28s var(--ease) both; }
.msg-user { align-self: flex-end; flex-direction: column; align-items: flex-end; gap: .35rem; }
.msg-bot { align-self: flex-start; align-items: flex-start; }
.msg-bot .avatar-mini { width: 34px; height: 34px; margin-top: 2px; border-radius: 50%; background: var(--blue-100); box-shadow: 0 0 0 2px #fff, 0 0 0 3px var(--blue-200); flex: none; }
.msg-col { display: flex; flex-direction: column; gap: .3rem; min-width: 0; align-items: flex-start; }
.bubble { padding: .7rem 1rem; border-radius: 18px; word-wrap: break-word; overflow-wrap: anywhere; line-height: 1.55; }
.bubble p { margin: .3rem 0; }
.bubble p:first-child { margin-top: 0; } .bubble p:last-child { margin-bottom: 0; }
.bubble ul, .bubble ol { margin: .3rem 0 .3rem 1rem; padding-left: .8rem; }
.msg-user .bubble { background: linear-gradient(180deg, var(--blue-600), var(--blue-700)); color: #fff; border-bottom-right-radius: 5px; box-shadow: 0 3px 10px rgba(29, 63, 143, .22); }
.msg-bot .bubble { background: var(--blue-50); border: 1px solid var(--blue-100); border-bottom-left-radius: 5px; }
.bubble.flagged { box-shadow: 0 0 0 3px var(--gold-400); }
.bubble.error { background: var(--err-bg); border-color: #f0bdb8; color: var(--err); }
.bubble.typing { display: inline-flex; gap: 5px; align-items: center; padding: .85rem 1rem; }
.bubble.typing i { width: 8px; height: 8px; border-radius: 50%; background: var(--blue-600); opacity: .45; animation: dot 1.1s ease-in-out infinite; }
.bubble.typing i:nth-child(2) { animation-delay: .15s; } .bubble.typing i:nth-child(3) { animation-delay: .3s; }
/* Fórmulas (KaTeX) y gráficas (canvas) del tutor */
.tex .katex, .tex .katex * { overflow-wrap: normal; word-wrap: normal; }
.tex[data-display="1"] { display: block; margin: .45rem 0; overflow-x: auto; overflow-y: hidden; text-align: center; padding: .1rem 0; }
.tex .katex-display { margin: 0; }
.bubble .katex { font-size: 1.08em; }
.msg.has-plot { width: 100%; }
.msg.has-plot .msg-col { flex: 1 1 auto; }
.msg.has-plot .bubble { width: 100%; }
.plot { margin: .55rem 0; max-width: 560px; }
.plot canvas { display: block; max-width: 100%; height: auto; border-radius: 10px; background: #fff; box-shadow: var(--sh-1); }
.plot figcaption { margin-top: .3rem; font-size: .78rem; color: var(--muted); }
.msg-user .tex, .msg-user .katex { color: inherit; }
.msg-tools { display: flex; gap: .3rem; }
.tool { display: inline-flex; align-items: center; gap: .3rem; background: none; border: 0; color: var(--muted); font: inherit; font-size: .78rem; font-weight: 700; padding: .2rem .5rem; min-height: 32px; border-radius: 999px; cursor: pointer; transition: background .15s, color .15s; }
.tool:hover { background: var(--blue-100); color: var(--blue-800); }
.tool[aria-pressed="true"] { background: var(--gold-100); color: var(--gold-600); }
.msg-meta { font-size: .72rem; color: var(--muted); display: inline-flex; align-items: center; gap: .25rem; }
.msg-user .bubble mark.err { background: rgba(255, 255, 255, .0); color: #fff; text-decoration: underline wavy #ffb4ae; text-decoration-thickness: 2px; text-underline-offset: 4px; position: relative; cursor: help; }
.msg-user .bubble mark.err:hover::after, .msg-user .bubble mark.err:focus::after {
    content: attr(data-fix); position: absolute; left: 0; top: 135%; background: var(--blue-900); color: #fff; padding: .25rem .6rem; border-radius: 8px; font-size: .82rem; font-weight: 700; white-space: nowrap; z-index: 5; box-shadow: var(--sh-2);
}

.composer { display: flex; gap: .55rem; padding: .8rem; border-top: 1px solid var(--line); align-items: flex-end; background: #fff; position: relative; }
.composer textarea { margin: 0; flex: 1; min-height: 46px; max-height: 160px; border-radius: 22px; padding: .7rem 1rem; resize: none; }
.composer .btn { flex: none; }
.composer .btn-send { width: 46px; height: 46px; padding: 0; }
.mic { width: 46px; height: 46px; padding: 0; border-radius: 50%; position: relative; }
.mic[aria-pressed="true"] { background: #e5484d; border-color: #e5484d; color: #fff; animation: mic-pulse 1.3s ease-out infinite; }
.mic[hidden] { display: none; }
.listen-hint { position: absolute; left: 1rem; top: -2.15rem; background: #e5484d; color: #fff; font-size: .8rem; font-weight: 700; padding: .25rem .8rem; border-radius: 999px; box-shadow: var(--sh-1); animation: pop .25s var(--ease) both; display: none; }
.listen-hint.on { display: inline-flex; gap: .4rem; align-items: center; }
.voice-note { font-size: .78rem; color: var(--muted); padding: 0 1rem .7rem; }
.counter { font-size: .78rem; color: var(--muted); font-weight: 600; }
.quota { display: inline-flex; gap: .35rem; align-items: center; }

/* ---------- Corrección de inglés ---------- */
.feedback { width: min(100%, 560px); background: #fff; border: 1px solid var(--line); border-left: 5px solid var(--gold-500); border-radius: 14px; padding: .8rem 1rem; box-shadow: var(--sh-1); font-size: .93rem; animation: rise .4s var(--ease) both; color: var(--ink); text-align: left; }
.feedback.ok { border-left-color: #2fa36b; }
.feedback h4 { margin: 0 0 .4rem; font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--gold-600); display: flex; align-items: center; gap: .4rem; }
.feedback.ok h4 { color: var(--ok); }
.fix { padding: .45rem 0; border-top: 1px dashed var(--line); animation: rise .35s var(--ease) both; animation-delay: calc(var(--k, 0) * 90ms + 120ms); }
.fix:first-of-type { border-top: 0; }
.fix .was { color: var(--err); text-decoration: line-through; text-decoration-thickness: 2px; font-weight: 600; }
.fix .arrow { color: var(--muted); margin: 0 .3rem; }
.fix .now { color: var(--ok); font-weight: 800; }
.fix .why { display: block; color: var(--muted); font-size: .86rem; margin-top: .1rem; }
.fb-line { margin: .4rem 0 0; display: flex; gap: .45rem; align-items: flex-start; }
.fb-line .icon { margin-top: .25em; color: var(--gold-600); }
.fb-line.good .icon { color: var(--ok); }
.fb-natural { background: var(--blue-50); border-radius: 10px; padding: .45rem .7rem; margin-top: .5rem; font-weight: 600; color: var(--blue-900); }
.fb-natural small { display: block; color: var(--muted); font-weight: 600; font-size: .74rem; text-transform: uppercase; letter-spacing: .05em; }
.improved { background: #f6fbf8; border: 1px solid #cbe9d8; border-radius: 10px; padding: .6rem .8rem; margin-top: .6rem; }
.improved-text { display: block; white-space: pre-wrap; }
.improved .msg-tools { margin-top: .3rem; }
.improved small { display: block; color: var(--ok); font-weight: 800; font-size: .74rem; text-transform: uppercase; letter-spacing: .05em; margin-bottom: .2rem; }
.meters { display: grid; gap: .45rem; margin: .5rem 0 .2rem; }
.meter { display: grid; grid-template-columns: 6.5rem 1fr 2rem; gap: .6rem; align-items: center; font-size: .84rem; font-weight: 700; color: var(--ink-2); }
.meter-bar { height: 10px; border-radius: 999px; background: var(--blue-100); overflow: hidden; }
.meter-bar i { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--gold-400), #2fa36b); transform-origin: left; animation: grow .8s var(--ease) .2s both; }

.setup-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1rem; }
.mode-card { position: relative; animation: rise .45s var(--ease) both; animation-delay: calc(var(--i, 0) * 80ms); }
.nav-extra { }
.mode-card h2 { display: flex; align-items: center; gap: .6rem; }
.level-picker { display: grid; grid-template-columns: repeat(4, 1fr); gap: .45rem; margin-top: .4rem; }
.level-picker label { position: relative; font-weight: 700; }
.level-picker input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; z-index: 2; min-height: 0; }
.level-picker span { display: block; text-align: center; padding: .55rem .2rem; border: 1.5px solid #c9d2e8; border-radius: 12px; background: #fff; transition: all .2s var(--ease); line-height: 1.2; }
.level-picker small { display: block; font-weight: 600; color: var(--muted); font-size: .68rem; margin-top: .1rem; }
.level-picker input:checked + span { border-color: var(--blue-700); background: var(--blue-100); color: var(--blue-900); box-shadow: 0 0 0 3px rgba(44, 85, 181, .18); }
.level-picker input:focus-visible + span { box-shadow: var(--focus); }
.level-picker .rec { position: absolute; top: -8px; right: -4px; background: var(--gold-500); color: #3a2800; font-size: .62rem; font-weight: 800; padding: 0 .4rem; border-radius: 999px; z-index: 1; }
.history-item { display: flex; align-items: center; gap: .8rem; padding: .7rem 0; border-bottom: 1px solid var(--line); }
.history-item:last-child { border-bottom: 0; }
.history-item .tile-ico { width: 38px; height: 38px; border-radius: 12px; margin: 0; flex: none; }
.history-item a { font-weight: 700; text-decoration: none; }
.history-item a:hover { text-decoration: underline; }

/* ---------- Pronunciación ---------- */
.drill { text-align: center; padding: clamp(1.2rem, 3vw, 2rem); }
.drill-phrase { font-size: clamp(1.4rem, 1rem + 2vw, 2.1rem); font-weight: 800; color: var(--blue-900); line-height: 1.3; margin: .4rem auto 1.1rem; max-width: 28ch; letter-spacing: -.02em; }
.words { display: flex; flex-wrap: wrap; justify-content: center; gap: .25rem .1rem; }
.w { padding: .05rem .28rem; border-radius: 10px; border: 2px solid transparent; transition: all .25s var(--ease); }
.w.ok { background: var(--ok-bg); border-color: #8fd0ae; color: var(--ok); }
.w.close { background: var(--warn-bg); border-color: #efc66a; color: var(--warn); }
.w.miss { background: var(--err-bg); border-color: #efa7a1; color: var(--err); }
.w.pop { animation: pop .4s var(--ease) both; animation-delay: calc(var(--k, 0) * 60ms); }
.drill-actions { display: flex; flex-wrap: wrap; gap: .6rem; justify-content: center; margin-top: 1.1rem; }
.drill-heard { min-height: 1.6em; color: var(--muted); margin-top: .9rem; font-style: italic; }
.ring { position: relative; width: 120px; height: 120px; margin: 1rem auto 0; }
.ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring .track { fill: none; stroke: var(--blue-100); stroke-width: 10; }
.ring .bar { fill: none; stroke: var(--ok); stroke-width: 10; stroke-linecap: round; stroke-dasharray: 314; stroke-dashoffset: 314; transition: stroke-dashoffset 1s var(--ease), stroke .3s; }
.ring .val { position: absolute; inset: 0; display: grid; place-items: center; font-size: 1.9rem; font-weight: 800; color: var(--blue-900); }
.verdict { font-weight: 800; font-size: 1.1rem; margin-top: .4rem; color: var(--blue-900); }
.dots { display: flex; gap: .4rem; justify-content: center; margin-bottom: .5rem; }
.dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--blue-200); transition: all .3s var(--ease); }
.dots i.now { background: var(--blue-700); transform: scale(1.35); }
.dots i.done { background: #2fa36b; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: .8rem; }
.stat { text-align: center; padding: .9rem .5rem; background: #fff; border: 1px solid var(--line); border-radius: var(--r-md); box-shadow: var(--sh-1); }
.stat b { display: block; font-size: 1.6rem; font-weight: 800; color: var(--blue-700); line-height: 1.1; }
.stat span { font-size: .78rem; color: var(--muted); font-weight: 700; }
.tabs { display: inline-flex; gap: .3rem; padding: .3rem; background: #fff; border: 1px solid var(--line); border-radius: 999px; box-shadow: var(--sh-1); flex-wrap: wrap; justify-content: center; }
.tabs button { border: 0; background: none; font: inherit; font-weight: 700; font-size: .9rem; color: var(--ink-2); padding: .45rem 1rem; min-height: 38px; border-radius: 999px; cursor: pointer; transition: background .2s, color .2s; }
.tabs button:hover { background: var(--blue-50); }
.tabs button[aria-selected="true"] { background: var(--blue-700); color: #fff; }

/* ---------- Pantalla de espera ---------- */
.loading-overlay { position: fixed; inset: 0; background: rgba(14, 34, 85, .6); backdrop-filter: blur(3px); display: flex; align-items: center; justify-content: center; z-index: 80; padding: 1rem; animation: fade .2s ease both; }
.loading-box { background: #fff; border-radius: var(--r-lg); padding: 1.6rem 2rem; text-align: center; max-width: 420px; box-shadow: var(--sh-2); }
.loading-box .avatar-frame { width: 96px; margin: 0 auto .8rem; }
.loading-box p { margin: 0; font-weight: 600; color: var(--ink-2); }

/* ---------- Acceso ---------- */
body.guest { align-items: center; justify-content: center; padding: 1rem; background: radial-gradient(90% 60% at 80% 0%, var(--blue-100), transparent), var(--bg); }
.guest-shell { width: 100%; max-width: 900px; display: grid; grid-template-columns: 1.05fr 1fr; background: #fff; border-radius: var(--r-lg); box-shadow: var(--sh-2); overflow: hidden; animation: rise .5s var(--ease) both; }
.guest-art { color: #fff; padding: 2rem 1.8rem; display: flex; flex-direction: column; justify-content: space-between; gap: 1.2rem; position: relative; overflow: hidden; background: radial-gradient(120% 100% at 0% 0%, var(--blue-600), var(--blue-800) 60%, var(--blue-900)); }
.guest-art::after { content: ""; position: absolute; right: -70px; bottom: -70px; width: 220px; height: 220px; border-radius: 50%; background: rgba(242, 193, 78, .18); }
.guest-art .avatar-frame { width: min(170px, 60%); margin: .6rem auto; z-index: 1; }
.guest-art h2 { color: #fff; font-size: 1.35rem; margin: 0; }
.guest-art p { color: #dbe5ff; margin: .3rem 0 0; font-size: .95rem; }
.guest-form { padding: 2rem 1.8rem; display: flex; flex-direction: column; justify-content: center; }
.guest-form h1 { font-size: 1.5rem; }

/* ---------- Animaciones ---------- */
@keyframes page-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@keyframes rise { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@keyframes pop { from { opacity: 0; transform: scale(.94) translateY(6px); } to { opacity: 1; transform: none; } }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes av-breathe { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-4px); } }
@keyframes av-sway { 0%, 100% { transform: rotate(-2deg); } 50% { transform: rotate(2deg); } }
@keyframes av-blink { 0%, 92%, 100% { transform: scaleY(1); } 95% { transform: scaleY(.08); } }
@keyframes av-think { 0%, 100% { transform: rotate(-3deg); } 50% { transform: rotate(-7deg); } }
@keyframes av-nod { 0%, 100% { transform: rotate(-1.5deg) translateY(0); } 50% { transform: rotate(1.5deg) translateY(-2px); } }
@keyframes av-talk { from { transform: scaleY(.55); } to { transform: scaleY(1.1); } }
@keyframes av-gesture { 0%, 100% { transform: rotate(0); } 40% { transform: rotate(-22deg); } 70% { transform: rotate(-10deg); } }
@keyframes av-listen { 0%, 100% { transform: rotate(4deg); } 50% { transform: rotate(6.5deg); } }
@keyframes ring { from { transform: scale(.96); opacity: .9; } to { transform: scale(1.14); opacity: 0; } }
@keyframes dot { 0%, 100% { transform: translateY(0); opacity: .4; } 50% { transform: translateY(-5px); opacity: 1; } }
@keyframes mic-pulse { 0% { box-shadow: 0 0 0 0 rgba(229, 72, 77, .55); } 100% { box-shadow: 0 0 0 16px rgba(229, 72, 77, 0); } }
@keyframes grow { from { transform: scaleX(0); } to { transform: scaleX(1); } }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
    .avatar, .avatar * { animation: none !important; }
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
    .chat-layout { grid-template-columns: 1fr; }
    .tutor-panel { display: none; }
    .chat-head { display: flex; }
    .chat-head .voice-toggle { margin-left: auto; }
}
@media (min-width: 961px) {
    .chat-head .voice-toggle { display: none; }
}
@media (max-width: 760px) {
    :root { --nav-h: 56px; }
    body { padding-bottom: calc(68px + env(safe-area-inset-bottom)); }
    .topbar-inner { padding: .4rem .8rem; }
    .brand span.brand-text { display: none; }
    .who { display: none; }
    .nav {
        position: fixed; left: 0; right: 0; bottom: 0; z-index: 45; background: #fff; border-top: 1px solid var(--line); padding: .35rem .4rem calc(.35rem + env(safe-area-inset-bottom));
        justify-content: space-around; gap: .1rem; box-shadow: 0 -6px 20px rgba(14, 34, 85, .1);
    }
    .nav a { flex: 1; flex-direction: column; gap: .1rem; font-size: .68rem; padding: .35rem .2rem; border-radius: 12px; color: var(--muted); min-height: 52px; justify-content: center; text-align: center; position: relative; }
    .nav a:hover { background: var(--blue-50); color: var(--blue-800); }
    .nav a.active { background: var(--blue-100); color: var(--blue-800); }
    .nav a .icon { width: 22px; height: 22px; }
    .nav .badge-dot { position: absolute; top: 2px; right: 22%; }
    .nav a.nav-extra { display: none; }
    .hero { grid-template-columns: 1fr; text-align: left; }
    .hero-art { width: 120px; justify-self: end; margin-top: -.5rem; order: -1; }
    .hero-art .speech { display: none; }
    .guest-shell { grid-template-columns: 1fr; }
    .guest-art { padding: 1.3rem 1.4rem; flex-direction: row; align-items: center; }
    .guest-art .avatar-frame { width: 78px; margin: 0; flex: none; }
    .guest-art .guest-copy p { display: none; }
    .guest-art::after { display: none; }
    .guest-art > .brand { display: none; }
    .guest-form { padding: 1.4rem; }
    .msg { max-width: 94%; }
    .plan-doc { padding: 1rem; }
    .messages { max-height: 58vh; padding: .8rem; }
    .meter { grid-template-columns: 5.2rem 1fr 1.6rem; }
    .stats { gap: .5rem; }
}
@media (max-width: 420px) {
    .level-picker { grid-template-columns: repeat(2, 1fr); }
}

@media print {
    .no-print, .topbar, .footer, .nav { display: none !important; }
    body { background: #fff; padding: 0; }
    .container { max-width: none; padding: 0; animation: none; }
    .card { border: 0; padding: 0; box-shadow: none; }
    .plan-doc h2 { page-break-after: avoid; }
    table, tr { page-break-inside: avoid; }
    table.tsheet, table.tsheet tr { page-break-inside: auto; }
}