/* ---------------------------------------------------------------------------
   Sistema visual de Lirela: azul confiable, superficies limpias y una
   profundidad mas marcada en oscuro para que la interfaz no parezca plana.
   --------------------------------------------------------------------------- */

:root {
    --ink: #172033;
    --muted: #667085;
    --line: #dce2ee;
    --paper: #f7f8fc;
    --surface: #ffffff;
    --surface-2: #eef1fa;
    --surface-raised: #ffffff;
    --topbar: rgba(255, 255, 255, .86);
    --forest: #3157c8;
    --forest-2: #6551c9;
    --mint: #dbe4ff;
    --mint-deep: #4f72da;
    /* Coral y ambar puros no llegan a 4.5:1 sobre blanco, asi que el tono
       vivo se reserva para bordes y fondos, y el texto usa la version oscura. */
    --coral: #f17b62;
    --coral-text: #a33218;
    --amber: #e6b45a;
    --amber-text: #7a5410;
    --green: #24724e;
    /* 3:1 sobre blanco: es el minimo para que el borde de un control se
       distinga. El anterior (#b6c2d1) se quedaba en 1.81:1. */
    --line-strong: #8d95a3;
    --accent-ink: #ffffff;
    --radius: 18px;
    --shadow: 0 8px 30px rgba(17, 45, 75, .07);
    --shadow-raised: 0 18px 45px rgba(17, 45, 75, .12);
    --glow: rgba(83, 105, 222, .16);

    /* Alias que usa esta app. */
    --bg: var(--paper);
    --panel: var(--surface);
    --text: var(--ink);
    --accent: var(--forest);
    --accent-soft: var(--mint);
    --ok: var(--green);
    --mid: var(--amber-text);
    --bad: var(--coral-text);

    font-family: "DM Sans", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        /* Azul menos saturado que el navy anterior: aquel se veia turbio.
           En oscuro la sombra no separa nada, asi que la profundidad la dan
           la tarjeta mas clara que el fondo y un borde que se vea. */
        --ink: #f0f3ff;
        --muted: #aab3cb;
        --line: #303a55;
        --line-strong: #66718e;
        --paper: #0b1020;
        --surface: #131a2e;
        --surface-2: #1a2340;
        --surface-raised: #202b49;
        --topbar: rgba(11, 16, 32, .88);
        --forest: #8eabff;
        --forest-2: #aa91ff;
        /* Blanco sobre este azul da 2.4:1: ilegible. El boton primario lleva
           tinta oscura en modo oscuro. */
        --accent-ink: #0b1020;
        --mint: #283968;
        --mint-deep: #b2c4ff;
        --coral: #f4907a;
        --coral-text: #f4907a;
        --amber: #edc57e;
        --amber-text: #edc57e;
        --green: #57c08d;
        --shadow: 0 12px 35px rgba(0, 0, 0, .28);
        --shadow-raised: 0 24px 70px rgba(0, 0, 0, .42);
        --glow: rgba(113, 135, 255, .22);

        --accent: var(--forest);
        --accent-soft: var(--mint);
        --ok: var(--green);
        --mid: var(--amber-text);
        --bad: var(--coral-text);
    }
}

:root[data-theme="dark"] {
    --ink: #f0f3ff;
    --muted: #aab3cb;
    --line: #303a55;
    --line-strong: #66718e;
    --paper: #0b1020;
    --surface: #131a2e;
    --surface-2: #1a2340;
    --surface-raised: #202b49;
    --topbar: rgba(11, 16, 32, .88);
    --forest: #8eabff;
    --forest-2: #aa91ff;
    --accent-ink: #0b1020;
    --mint: #283968;
    --mint-deep: #b2c4ff;
    --coral: #ff9b85;
    --coral-text: #ff9b85;
    --amber: #f3cb7d;
    --amber-text: #f3cb7d;
    --green: #61d69b;
    --shadow: 0 12px 35px rgba(0, 0, 0, .28);
    --shadow-raised: 0 24px 70px rgba(0, 0, 0, .42);
    --glow: rgba(113, 135, 255, .22);
    --accent: var(--forest);
    --accent-soft: var(--mint);
    --ok: var(--green);
    --mid: var(--amber-text);
    --bad: var(--coral-text);
    color-scheme: dark;
}

:root[data-theme="light"] { color-scheme: light; }

/* Le dice al navegador que pinte de oscuro sus propios controles: barras de
   desplazamiento, campos nativos y el fondo antes de que cargue la hoja. */
/* Escala tipografica: 11 12 13 14 15 16 17 21 24 28 34 44.
   Antes habia 21 tamanos sueltos entre 10 y 56 px, que se leia como ruido.
   Al anadir estilos, usar un escalon existente en lugar de crear otro. */

:root { color-scheme: light dark; }

/* Nadie deberia marearse usando esto. */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Quita el retardo de 300 ms al tocar en movil. */
a, button, summary, input, [role="button"] { touch-action: manipulation; }

/* Navegar con teclado tiene que verse. Solo con focus-visible, para no
   dibujar el anillo cuando se pulsa con el raton. */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}
:focus:not(:focus-visible) { outline: none; }

/* Los titulos no deben partirse dejando una palabra huerfana. */
h1, h2, h3 { text-wrap: balance; }
p { text-wrap: pretty; }

/* Cifras de la misma anchura: las columnas de numeros dejan de bailar. */
.stats strong, .score, table td, .unit-chip small, .badge, #result-score,
.queue strong, .lesson-progress {
    font-variant-numeric: tabular-nums;
}

h1, h2, h3, strong, .brand, .score, .stats strong {
    font-family: "Manrope", "DM Sans", system-ui, sans-serif;
}

* { box-sizing: border-box; }
.icon-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

/* Sin esto, cualquier regla que ponga display a una clase anula el atributo
   hidden del HTML. Paso justo eso: .lesson-stage tenia display:flex y quedaba
   como una capa a pantalla completa siempre visible. */
[hidden] { display: none !important; }

body {
    margin: 0;
    background:
        radial-gradient(circle at 12% -10%, var(--glow), transparent 34rem),
        radial-gradient(circle at 92% 12%, color-mix(in srgb, var(--accent-soft) 20%, transparent), transparent 28rem),
        var(--bg);
    background-attachment: fixed;
    color: var(--text);
    font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

.topbar {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 14px 22px;
    border-bottom: 1px solid var(--line);
    background: var(--topbar);
    backdrop-filter: blur(18px);
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: 0 8px 28px color-mix(in srgb, var(--paper) 35%, transparent);
}

.brand { font-weight: 800; text-decoration: none; color: var(--text); letter-spacing: -0.02em; }
.topbar nav { display: flex; gap: 18px; }
.topbar nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
.topbar nav a:hover { color: var(--text); }

main { max-width: 980px; margin: 0 auto; padding: 34px 24px 72px; }

h1 { font-size: 28px; letter-spacing: -0.02em; margin: 0 0 6px; }
h2 { font-size: 17px; margin: 28px 0 10px; }

.alert {
    background: rgba(230, 180, 90, .20);
    background: color-mix(in srgb, var(--amber) 20%, transparent);
    border: 1px solid rgba(230, 180, 90, .55);
    border: 1px solid color-mix(in srgb, var(--amber) 55%, transparent);
    border-radius: 10px;
    padding: 12px 14px;
    margin-bottom: 20px;
    font-size: 14px;
}

.queue {
    display: flex;
    gap: 20px;
    font-size: 14px;
    color: var(--muted);
    margin-bottom: 18px;
}
.queue strong { color: var(--text); font-size: 16px; }

.card {
    background: linear-gradient(145deg, var(--surface-raised), var(--panel));
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 28px 24px;
}

.card .level { font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin: 0 0 10px; }
.card h1 { font-size: 34px; line-height: 1.25; margin: 0 0 8px; }
.translation { color: var(--muted); margin: 0 0 22px; }

.actions { display: flex; gap: 10px; flex-wrap: wrap; }

button {
    font: inherit;
    font-size: 15px;
    padding: 10px 18px;
    border-radius: 9px;
    border: 1px solid var(--line-strong);
    background: transparent;
    color: var(--text);
    cursor: pointer;
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 700; box-shadow: 0 5px 14px rgba(11, 49, 92, .18); }
button.primary,
.primary-link { background: linear-gradient(135deg, var(--accent), var(--forest-2)); border-color: var(--accent); color: var(--accent-ink); }
button.primary:hover,
.primary-link:hover { background: linear-gradient(135deg, var(--forest-2), var(--accent)); border-color: var(--forest-2); color: var(--accent-ink); }
button.secondary { color: var(--muted); }
button[disabled] { opacity: 0.45; cursor: default; }
button.recording { background: var(--bad); border-color: var(--bad); color: #fff; }

.hint { font-size: 14px; color: var(--muted); min-height: 22px; margin: 14px 0 0; }

.result { margin-top: 24px; border-top: 1px solid var(--line); padding-top: 20px; }
.score { font-size: 44px; font-weight: 700; letter-spacing: -0.03em; }
.score small { font-size: 16px; color: var(--muted); font-weight: 400; }
.words { font-size: 21px; line-height: 1.6; margin: 6px 0 14px; }
.words .ok { color: var(--ok); }
.words .bad { color: var(--bad); text-decoration: underline wavy; text-underline-offset: 5px; }
.transcript { font-size: 14px; color: var(--muted); margin: 0 0 12px; }
.coaching {
    background: rgba(185, 215, 242, .45);
    background: color-mix(in srgb, var(--accent-soft) 45%, transparent);
    border-left: 3px solid var(--accent);
    padding: 12px 14px;
    border-radius: 0 8px 8px 0;
    font-size: 15px;
    margin: 0 0 12px;
    white-space: pre-wrap;
}
.schedule { font-size: 13px; color: var(--muted); margin: 0 0 18px; }

.budget { max-width: 720px; margin: 26px auto 0; padding: 0 22px; font-size: 13px; color: var(--muted); }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 12px; margin: 20px 0; }
.stats div { background: linear-gradient(145deg, var(--surface-raised), var(--panel)); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); padding: 16px; }
.stats strong { display: block; font-size: 24px; letter-spacing: -0.02em; }
.stats span { font-size: 12px; color: var(--muted); }

.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; }
.tags li { background: var(--panel); border: 1px solid var(--line); border-radius: 20px; padding: 5px 12px; font-size: 14px; }
.tags small { color: var(--muted); margin-left: 4px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; }
td.ok { color: var(--ok); } td.mid { color: var(--mid); } td.bad { color: var(--bad); }

.panel { background: linear-gradient(145deg, var(--surface-raised), var(--panel)); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; margin-bottom: 16px; }
.panel h2 { margin-top: 0; }
.bar { height: 8px; background: var(--line); border-radius: 999px; overflow: hidden; margin-bottom: 12px; }
.bar span { display: block; height: 100%; background: var(--accent); }
dl { display: grid; grid-template-columns: auto 1fr; gap: 6px 18px; font-size: 14px; margin: 0; }
dt { color: var(--muted); }

.muted { color: var(--muted); font-size: 14px; }
code { background: rgba(127, 127, 127, 0.16); padding: 1px 5px; border-radius: 4px; font-size: 0.9em; }

.howto {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow);
    padding: 14px 18px;
    margin-bottom: 18px;
    font-size: 14px;
}
.howto summary { cursor: pointer; font-weight: 600; color: var(--text); }
.howto ol { margin: 12px 0 8px; padding-left: 20px; }
.howto li { margin-bottom: 6px; color: var(--muted); }
.howto li strong { color: var(--text); }
.howto .ok { color: var(--ok); font-weight: 600; }
.howto .bad { color: var(--bad); font-weight: 600; }
kbd {
    background: rgba(127, 127, 127, 0.16);
    border: 1px solid var(--line);
    border-radius: 4px;
    padding: 1px 6px;
    font-size: 12px;
    font-family: inherit;
}

/* --- temas de conversacion --- */
.topics { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 10px; margin: 20px 0; }
.topic {
    width: 100%;
    text-align: left;
    padding: 14px 16px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow);
    display: grid;
    gap: 4px;
}
.topic:hover { border-color: var(--accent); }
.topic-title { font-weight: 600; font-size: 16px; }
.topic-level { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }
.topic-summary { font-size: 13px; color: var(--muted); line-height: 1.4; overflow-wrap: break-word; }

/* --- hilo de conversacion --- */
.chat-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 14px; }
.chat-head strong { font-size: 17px; }
.chat-head .muted { font-size: 13px; margin-left: 8px; }

.thread {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 18px;
    min-height: 260px;
    max-height: 52vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.bubble { max-width: 86%; padding: 11px 14px; border-radius: 14px; }
.bubble.assistant { background: rgba(127, 127, 127, 0.13); align-self: flex-start; border-bottom-left-radius: 4px; }
.bubble.user { background: var(--accent); color: var(--accent-ink); align-self: flex-end; border-bottom-right-radius: 4px; }
.bubble-en { margin: 0; font-size: 16px; line-height: 1.5; overflow-wrap: break-word; }
.bubble-es { margin: 6px 0 0; font-size: 13px; opacity: 0.75; font-style: italic; }
.bubble-audio {
    margin-top: 8px;
    padding: 3px 10px;
    font-size: 12px;
    border-radius: 20px;
    border: 1px solid var(--line);
    background: transparent;
    color: var(--muted);
}

.correction {
    align-self: stretch;
    background: rgba(230, 180, 90, .20);
    background: color-mix(in srgb, var(--amber) 20%, transparent);
    border-left: 3px solid var(--mid);
    border-radius: 0 8px 8px 0;
    padding: 9px 12px;
    font-size: 14px;
}
.correction-why { display: block; color: var(--muted); font-size: 13px; margin-top: 4px; }

.vocab-note {
    align-self: stretch;
    background: rgba(36, 114, 78, .14);
    background: color-mix(in srgb, var(--ok) 14%, transparent);
    border-left: 3px solid var(--ok);
    border-radius: 0 8px 8px 0;
    padding: 9px 12px;
    font-size: 13px;
}
.chip { display: inline-block; background: rgba(127, 127, 127, 0.16); border-radius: 20px; padding: 2px 10px; margin: 2px 2px 0 0; }

/* --- lista de vocabulario --- */
.vocab { list-style: none; padding: 0; display: grid; gap: 10px; margin-top: 16px; }
.vocab li { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); padding: 14px 16px; }
.vocab-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.vocab-head strong { font-size: 17px; }
.vocab-example { margin: 8px 0; font-size: 14px; line-height: 1.5; }
.vocab-actions { display: flex; gap: 8px; margin-top: 6px; }
.vocab-actions button { padding: 5px 12px; font-size: 13px; }
.badge { font-size: 11px; background: rgba(127, 127, 127, 0.18); border-radius: 20px; padding: 2px 9px; color: var(--muted); }
.ok-badge { color: var(--ok); background: rgba(36, 114, 78, .18);
    background: color-mix(in srgb, var(--ok) 18%, transparent); }

.button-link {
    display: inline-block;
    padding: 10px 18px;
    border-radius: 9px;
    border: 1px solid var(--line);
    color: var(--muted);
    text-decoration: none;
    font-size: 15px;
}
.button-link:hover { border-color: var(--accent); color: var(--text); }

/* --- respuestas guiadas --- */
.helper {
    background: rgba(185, 215, 242, .40);
    background: color-mix(in srgb, var(--accent-soft) 40%, transparent);
    border: 1px solid rgba(11, 49, 92, .28);
    border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
    border-radius: 14px;
    padding: 12px 14px;
    margin-top: 14px;
}
.helper-title { margin: 0 0 10px; font-size: 13px; color: var(--muted); font-weight: 600; }
.suggestion {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-top: 1px solid rgba(127, 127, 127, 0.16);
}
.suggestion:first-of-type { border-top: 0; padding-top: 0; }
.suggestion-text { flex: 1; min-width: 0; }
.suggestion-text strong { display: block; font-size: 15px; font-weight: 600; }
.suggestion-text span { display: block; font-size: 13px; color: var(--muted); margin-top: 2px; }
.suggestion-listen, .suggestion-use {
    padding: 5px 12px;
    font-size: 13px;
    border-radius: 20px;
    border: 1px solid var(--line);
    background: transparent;
    color: var(--muted);
    flex-shrink: 0;
}
.suggestion-use { border-color: var(--accent); color: var(--accent); }
.suggestion-use:hover { background: var(--accent); color: var(--accent-ink); }
button.active { border-color: var(--accent); color: var(--accent); }

/* ===========================================================================
   Movil. El objetivo es el iPhone en Safari, incluido "Anadir a inicio".
   =========================================================================== */

html { -webkit-text-size-adjust: 100%; }

body {
    /* Respeta la muesca y la barra inferior de gestos. */
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
    overflow-x: hidden;
}

/* El resaltado gris de iOS al tocar da sensacion de pagina rota. */
a, button, summary { -webkit-tap-highlight-color: transparent; }

/* Nada debe desbordar a lo ancho. */
main, .card, .panel, .thread, .helper { max-width: 100%; }
img, video { max-width: 100%; height: auto; }

/* Las tablas anchas se desplazan dentro de su caja, no arrastran la pagina. */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

@media (max-width: 720px) {
    /* El hueco de abajo reserva el alto de la barra de navegacion fija. */
    main { padding: 18px 16px calc(76px + env(safe-area-inset-bottom)); }

    .topbar {
        padding: 12px 16px;
        padding-top: calc(12px + env(safe-area-inset-top));
        gap: 14px;
        position: sticky;
        top: 0;
        z-index: 20;
    }

    h1 { font-size: 24px; }
    .card { padding: 20px 16px; }
    .card h1 { font-size: 24px; }

    /* Objetivos tactiles comodos: minimo 44 px de alto. */
    button, .button-link {
        min-height: 44px;
        padding: 11px 16px;
        font-size: 15px;
    }
    .actions { gap: 8px; }
    .actions button { flex: 1 1 auto; min-width: 44%; }

    .queue { gap: 14px; font-size: 13px; flex-wrap: wrap; }
    .topics { grid-template-columns: 1fr; }
    .stats { grid-template-columns: repeat(auto-fit, minmax(96px, 1fr)); gap: 8px; }
    .stats div { padding: 12px; }
    .stats strong { font-size: 21px; }

    .bubble { max-width: 92%; }
    .words { font-size: 17px; }
    .score { font-size: 34px; }

    dl { grid-template-columns: 1fr; gap: 2px 0; }
    dl dt { margin-top: 8px; }

    .suggestion { flex-wrap: wrap; }
    .suggestion-text { flex: 1 1 100%; }
    .suggestion-listen, .suggestion-use { min-height: 38px; padding: 7px 14px; }
}

/* La conversacion usa toda la altura util y deja los botones siempre a mano. */
@media (max-width: 720px) {
    #chat { display: flex; flex-direction: column; }

    .thread {
        max-height: none;
        flex: 1;
        min-height: 46vh;
        padding: 14px;
    }

    #chat .actions {
        position: sticky;
        bottom: 0;
        background: var(--bg);
        padding: 10px 0 calc(10px + env(safe-area-inset-bottom));
        margin-top: 4px;
        z-index: 10;
    }
    #chat .actions button { min-width: 30%; font-size: 14px; padding: 11px 10px; }
    #btn-speak { min-width: 100%; order: -1; }
}

/* dvh evita que la barra de Safari tape el contenido al aparecer y desaparecer. */
@supports (height: 100dvh) {
    @media (max-width: 720px) {
        .thread { max-height: 52dvh; }
    }
}

@media (max-width: 380px) {
    .actions button { min-width: 100%; }
}

/* --- plan de estudios --- */
.eyebrow {
    display: block;
    color: var(--mint-deep);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .15em;
    text-transform: uppercase;
}
.level-heading {
    display: flex;
    align-items: baseline;
    gap: 10px;
    flex-wrap: wrap;
    margin: 32px 0 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--line);
}
.level-heading small { color: var(--muted); font-weight: 400; font-size: 13px; }
.level-heading .muted { margin-left: auto; font-size: 13px; }

.current-unit { border-color: var(--accent); }
.current-unit h2 { margin: 6px 0 4px; }

.unit {
    background: var(--panel);
    border: 1px solid var(--line);
    border-left: 3px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow);
    padding: 16px 18px;
    margin-bottom: 10px;
}
.unit-started { border-left-color: var(--amber); }
.unit-done { border-left-color: var(--ok); }
.unit-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.unit-code {
    font-family: "Manrope", sans-serif;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .06em;
    color: var(--mint-deep);
}
.unit-head strong { font-size: 17px; }
.unit-goal { margin: 8px 0 6px; font-size: 14px; }
.unit-grammar { margin: 0 0 12px; font-size: 13px; color: var(--muted); }
.unit-grammar .eyebrow { display: inline; margin-right: 6px; }
.unit-meta { font-size: 13px; margin: 8px 0 12px; }
.unit-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.unit-actions .button-link { padding: 7px 14px; font-size: 13px; min-height: 0; }

.unit-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow);
    padding: 14px 18px;
    margin-bottom: 16px;
}
.unit-banner strong { display: block; font-size: 17px; margin-top: 2px; }
.unit-banner p { margin: 4px 0 0; font-size: 13px; }

.primary-link { background: linear-gradient(135deg, var(--accent), var(--forest-2)); border-color: var(--accent); color: var(--accent-ink); font-weight: 700; }
.primary-link:hover { background: linear-gradient(135deg, var(--forest-2), var(--accent)); color: var(--accent-ink); }
.level-badge { font-family: "Manrope", sans-serif; font-weight: 800; letter-spacing: .04em; }

/* --- examenes --- */
.exam-level { margin-bottom: 12px; }
.level-exam {
    width: 100%;
    text-align: left;
    padding: 16px 18px;
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-ink);
    border-radius: 14px;
    font-weight: 700;
    box-shadow: 0 5px 14px rgba(11, 49, 92, .18);
}
.level-exam small { display: block; margin-top: 3px; font-weight: 400; opacity: .82; font-size: 12px; }
.level-exam:hover { background: var(--forest-2); border-color: var(--forest-2); }

.exam-units { list-style: none; padding: 0; display: grid; gap: 8px; }
.exam-units button {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    text-align: left;
    padding: 12px 16px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow);
}
.exam-unit-title { flex: 1; font-weight: 600; }
.fail-badge { color: var(--bad); background: color-mix(in srgb, var(--bad) 16%, transparent); }

.exam-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; }
.exam-head strong { display: block; font-size: 17px; margin-top: 2px; }
.exam-question { margin-top: 14px; }
.exam-kind {
    margin: 0 0 8px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: var(--mint-deep);
}
.exam-question h2 { margin: 0 0 10px; font-size: 24px; line-height: 1.3; }

#exam-options { display: grid; gap: 8px; margin: 14px 0; }
.exam-option {
    width: 100%;
    text-align: left;
    padding: 12px 15px;
    border-radius: 12px;
    background: transparent;
    font-size: 15px;
}
.exam-option.picked { border-color: var(--accent); background: rgba(185, 215, 242, .35); background: color-mix(in srgb, var(--accent-soft) 40%, transparent); }

#exam-typed { margin: 14px 0; }
#exam-input {
    width: 100%;
    /* 16 px evita que iOS haga zoom al enfocar el campo. */
    font-size: 16px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--panel);
    color: var(--text);
}
#exam-input { border-color: var(--line-strong); }

.exam-feedback { margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); }
.exam-verdict { margin: 0 0 4px; font-family: "Manrope", sans-serif; font-weight: 800; font-size: 17px; }
.exam-feedback.ok .exam-verdict { color: var(--ok); }
.exam-feedback.bad .exam-verdict { color: var(--bad); }
.exam-library { margin-bottom: 10px; overflow: clip; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.exam-library > summary { display: flex; justify-content: space-between; gap: 12px; padding: 15px 17px; list-style: none; cursor: pointer; }
.exam-library > summary::-webkit-details-marker { display: none; }
.exam-library > summary span { color: var(--muted); }
.exam-library-content { padding: 12px; border-top: 1px solid var(--line); }
.exam-library-content .exam-level { margin-top: 0; }
.exam-library-content .exam-units { margin-bottom: 0; }

#exam-result h1 { font-size: 44px; margin: 4px 0 6px; }

/* --- rejilla de unidades del progreso --- */
.unit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(88px, 1fr));
    gap: 8px;
    margin-bottom: 8px;
}
.unit-chip {
    display: block;
    padding: 10px 12px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-left: 3px solid var(--line);
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-decoration: none;
    color: inherit;
}
.unit-chip:hover { border-color: var(--accent); }
.unit-chip.unit-started { border-left-color: var(--amber); }
.unit-chip.unit-done { border-left-color: var(--ok); }
.unit-chip-bar {
    display: block;
    height: 4px;
    margin-top: 7px;
    border-radius: 999px;
    background: var(--line);
    overflow: hidden;
}
.unit-chip-bar span { display: block; height: 100%; background: var(--accent); }
.unit-chip small { display: block; margin-top: 5px; font-size: 11px; font-weight: 700; }

/* --- ruta guiada de la portada --- */

.steps { list-style: none; padding: 0; counter-reset: step; display: grid; gap: 10px; margin: 0 0 22px; }
.step {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow);
}
.step-number {
    display: grid;
    place-items: center;
    width: 32px;
    height: 32px;
    flex: 0 0 32px;
    border-radius: 50%;
    background: var(--line);
    color: var(--muted);
    font-family: "Manrope", sans-serif;
    font-weight: 800;
    font-size: 14px;
}
.step-body { flex: 1; min-width: 0; }
.step-body strong { display: block; font-size: 16px; }
.step-body p { margin: 2px 0 0; font-size: 13px; }
.step-detail { font-size: 12px !important; color: var(--muted); }

.step-open { border-color: var(--accent); }
.step-open .step-number { background: var(--accent); color: var(--accent-ink); }
.step-done .step-number { background: var(--ok); color: var(--paper); }
.step-locked { opacity: .58; }

/* --- lista de palabras del paso 1 --- */
.wordlist { list-style: none; padding: 0; display: grid; gap: 8px; margin: 16px 0; }
.wordlist li {
    display: flex;
    /* La ilustracion ocupa una linea entera debajo del texto: sin envolver,
       se comprime dentro de la fila y no se ve. */
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-left: 3px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow);
}
.wordlist li.word-seen { border-left-color: var(--ok); }
.word-main { flex: 1 1 200px; min-width: 0; }
.word-main strong { display: block; font-size: 17px; overflow-wrap: break-word; }
.word-main .muted { font-size: 14px; }
.word-example { display: block; margin-top: 4px; font-size: 13px; color: var(--muted); }
.word-actions { display: flex; gap: 8px; flex-shrink: 0; }
.word-actions button { padding: 6px 13px; font-size: 13px; border-radius: 20px; min-height: 0; }
.word-seen .word-seen-toggle { color: var(--ok); border-color: var(--ok); }

@media (max-width: 720px) {
    .step { flex-wrap: wrap; }
    .step-body { flex: 1 1 60%; }
    .step .button-link, .step .badge { margin-left: auto; }
    .wordlist li { flex-wrap: wrap; }
    .word-main { flex: 1 1 100%; }
    .word-actions { width: 100%; }
    .word-actions button { flex: 1; }
}

/* --- acceso --- */
.login-shell {
    min-height: min(680px, calc(100vh - 150px));
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(340px, .85fr);
    align-items: center;
    gap: clamp(36px, 8vw, 96px);
}
.login-promise h1 { font-size: clamp(34px, 5.2vw, 56px); line-height: 1.04; margin: 12px 0 20px; }
.login-promise > p { max-width: 600px; color: var(--muted); font-size: 17px; }
.login-points { list-style: none; padding: 0; margin: 30px 0 0; display: grid; gap: 12px; }
.login-points li {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--text);
}
.login-points span {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    flex: 0 0 38px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--surface-2);
    color: var(--accent);
    font-size: 12px;
    font-weight: 800;
}
.login {
    max-width: 440px;
    width: 100%;
    margin: 0;
    padding: clamp(26px, 4vw, 42px);
    text-align: center;
    box-shadow: var(--shadow-raised);
    border-color: color-mix(in srgb, var(--accent) 24%, var(--line));
}
.login h2 { font-size: 24px; margin: 18px 0 6px; }
.login-mark {
    width: 54px;
    height: 54px;
    display: grid;
    place-items: center;
    margin: 0 auto;
    border-radius: 17px;
    background: linear-gradient(145deg, var(--forest-2), var(--accent));
    color: var(--accent-ink);
    box-shadow: 0 12px 30px var(--glow);
    font: 800 17px/1 "Manrope", sans-serif;
}
.login .actions { justify-content: center; margin-top: 20px; }
.login .alert { text-align: left; }
.google-login { width: 100%; justify-content: center; }
.google-login span {
    width: 24px;
    height: 24px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--surface);
    color: #2765cf;
    font-weight: 800;
}
.signout {
    margin-left: auto;
    color: var(--muted);
    text-decoration: none;
    font-size: 13px;
    white-space: nowrap;
}
.signout:hover { color: var(--text); }

.callback-help { margin-top: 22px; text-align: left; font-size: 14px; }
.callback-help summary { cursor: pointer; color: var(--muted); }
.callback-help p { margin: 10px 0; }
.callback-uri {
    background: var(--paper);
    border-left: 3px solid var(--accent);
    border-radius: 0 8px 8px 0;
    padding: 10px 12px;
}
.callback-uri code { background: transparent; padding: 0; word-break: break-all; font-size: 13px; }

.install { max-width: 520px; margin: 6vh auto 0; }
.install h1 { margin: 6px 0 10px; }
.install .actions { margin-top: 18px; }
.install-note { margin-top: 24px; font-size: 13px; }

/* --- ilustraciones del vocabulario --- */
.word-figure { flex: 0 0 100%; margin-top: 10px; }
.word-figure img {
    display: block;
    width: 100%;
    max-width: 320px;
    border-radius: 12px;
    border: 1px solid var(--line);
}

.lesson-bar { align-items: center; flex-wrap: wrap; margin: 18px 0 8px; }
.lesson-note { font-size: 13px; }

/* --- leccion a pantalla completa --- */
.lesson-stage {
    position: fixed;
    inset: 0;
    z-index: 100;
    overscroll-behavior: contain;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 18px;
    padding: 24px;
    padding-top: calc(24px + env(safe-area-inset-top));
    padding-bottom: calc(24px + env(safe-area-inset-bottom));
    background: var(--bg);
}
.lesson-close {
    position: absolute;
    top: calc(14px + env(safe-area-inset-top));
    right: 16px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--line);
    background: var(--panel);
    color: var(--muted);
    font-size: 24px;
    line-height: 1;
}
.lesson-figure { margin: 0; text-align: center; max-width: 460px; width: 100%; }
.lesson-figure img {
    width: 100%;
    max-width: 340px;
    border-radius: 18px;
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}
.lesson-placeholder {
    display: grid;
    place-items: center;
    width: 100%;
    max-width: 340px;
    aspect-ratio: 1;
    margin: 0 auto;
    border-radius: 18px;
    border: 1px dashed var(--line);
    color: var(--muted);
    font-size: 14px;
}
.lesson-figure figcaption { margin-top: 18px; }
.lesson-figure strong {
    display: block;
    font-family: "Manrope", sans-serif;
    font-size: 34px;
    letter-spacing: -0.02em;
}
.lesson-figure span { display: block; margin-top: 4px; font-size: 17px; color: var(--muted); }
.lesson-figure em { display: block; margin-top: 10px; font-size: 14px; color: var(--muted); }
.lesson-progress { margin: 0; font-size: 13px; color: var(--muted); }

@media (max-width: 720px) {
    .lesson-figure strong { font-size: 28px; }
    .lesson-figure img, .lesson-placeholder { max-width: 260px; }
}

.listen-panel { margin-top: 18px; }
.listen-panel h2 { margin-top: 0; }
.listen-panel audio { width: 100%; margin: 12px 0 8px; }

/* --- comprension auditiva --- */
.listen-units { list-style: none; padding: 0; display: grid; gap: 8px; margin-top: 18px; }
.listen-units li {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    padding: 12px 16px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow);
}
.listen-info { flex: 1 1 200px; min-width: 0; display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.listen-info strong { font-size: 16px; }
.listen-units button { min-height: 40px; padding: 8px 16px; font-size: 14px; }

#listen-audio { width: 100%; margin-bottom: 8px; }

.listen-question {
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--panel);
    box-shadow: var(--shadow);
    padding: 16px 18px;
    margin: 0 0 10px;
}
.listen-question legend { padding: 0 6px; font-weight: 600; font-size: 15px; }
.listen-option {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 9px 4px;
    cursor: pointer;
    font-size: 15px;
}
.listen-option input { margin-top: 3px; flex-shrink: 0; width: 18px; height: 18px; accent-color: var(--accent); }
.listen-option:hover { color: var(--accent); }

.listen-ok { border-left-color: var(--ok); }
.listen-bad { border-left-color: var(--bad); }
#listen-review .correction { margin-bottom: 8px; }
#listen-transcript { max-height: none; }
#listening-result h1 { font-size: 44px; margin: 4px 0 6px; }
.listening-featured button { flex: 0 0 auto; }
.listen-library { display: grid; gap: 9px; }
.listen-library > details { overflow: clip; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.listen-library > details > summary { display: flex; justify-content: space-between; padding: 14px 16px; list-style: none; cursor: pointer; font-family: "Manrope", sans-serif; font-weight: 700; }
.listen-library > details > summary::-webkit-details-marker { display: none; }
.listen-library > details > summary span { color: var(--muted); font-family: "DM Sans", sans-serif; font-weight: 500; }
.listen-library .listen-units { margin: 0; padding: 8px; border-top: 1px solid var(--line); }
.listen-library .listen-units li { box-shadow: none; }

/* --- resaltado de la palabra que se esta pronunciando --- */
.kw {
    border-radius: 5px;
    padding: 0 2px;
    /* Solo color y fondo: animar el tamano movería el texto de sitio. */
    transition: background-color .12s linear, color .12s linear;
}
.kw-on {
    background: var(--accent);
    color: var(--accent-ink);
}
@media (prefers-reduced-motion: reduce) {
    .kw { transition: none; }
}

/* --- navegacion compacta --- */
.topbar .nav-primary { display: flex; gap: 4px; align-items: center; }
.topbar .nav-primary a {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 8px 13px;
    border: 1px solid transparent;
    border-radius: 10px;
    font-weight: 600;
    transition: color .15s ease, background-color .15s ease;
}
.nav-icon {
    width: 17px;
    height: 17px;
    flex: none;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.7;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.topbar .nav-primary a:hover {
    color: var(--text);
    background: var(--surface-2);
}
.topbar .nav-primary a[aria-current="page"] {
    color: var(--accent);
    background: rgba(127, 127, 127, .14);
    background: color-mix(in srgb, var(--accent-soft) 40%, transparent);
    /* El color solo no basta: quien no lo distingue necesita otra senal. */
    border-color: rgba(127, 127, 127, .22);
    border-color: color-mix(in srgb, var(--accent-soft) 90%, transparent);
}
.account-menu { position: relative; margin-left: auto; }
.account-menu summary {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    list-style: none;
    border: 1px solid var(--line);
    border-radius: 50%;
    color: var(--accent);
    background: var(--surface-2);
    cursor: pointer;
    font: 800 13px/1 "Manrope", sans-serif;
}
.account-menu summary::-webkit-details-marker { display: none; }
.account-menu[open] summary { border-color: var(--accent); box-shadow: 0 0 0 4px var(--glow); }
.account-menu nav {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 250px;
    display: grid;
    gap: 3px;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 13px;
    background: var(--surface-raised);
    box-shadow: var(--shadow-raised);
}
.account-menu nav a,
.account-menu nav button {
    width: 100%;
    min-height: 0;
    padding: 10px 12px;
    border: 0;
    border-radius: 8px;
    color: var(--muted);
    background: transparent;
    font-size: 14px;
    text-align: left;
}
.account-menu nav a:hover,
.account-menu nav button:hover { color: var(--text); background: var(--surface-2); }
.account-label { padding: 7px 12px 10px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 12px; overflow: hidden; text-overflow: ellipsis; }

/* En movil la navegacion baja al alcance del pulgar.
   Antes se apretaba en la barra superior hasta los 12 px y cuatro etiquetas
   competian por el ancho con la marca y la cuenta. Abajo caben las cuatro
   enteras, con icono, y sin robarle sitio al contenido. */
@media (max-width: 720px) {
    /* La barra de arriba deja de fijarse y pierde el desenfoque a proposito.
       `backdrop-filter` convierte al elemento en bloque contenedor de sus
       descendientes `fixed`, y con el puesto la barra inferior se anclaba
       dentro de la cabecera en vez de al pie de la pantalla. Sin desenfoque no
       hace falta fondo propio: se ve el del documento y no hay costura. */
    .topbar {
        position: static;
        gap: 8px;
        padding: 10px 14px calc(10px);
        padding-top: calc(10px + env(safe-area-inset-top));
        background: transparent;
        backdrop-filter: none;
        box-shadow: none;
        border-bottom: 0;
    }
    .brand { font-size: 16px; }
    .account-menu { margin-left: auto; }
    .account-menu summary { width: 34px; height: 34px; }
    .account-menu nav { position: fixed; top: 58px; left: 12px; right: 12px; width: auto; }

    .topbar .nav-primary {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 60;
        gap: 0;
        padding: 6px 6px calc(6px + env(safe-area-inset-bottom));
        border-top: 1px solid var(--line);
        background: var(--topbar);
        backdrop-filter: blur(18px);
    }
    .topbar .nav-primary a {
        flex: 1;
        flex-direction: column;
        gap: 3px;
        min-height: 52px;
        justify-content: center;
        padding: 6px 4px;
        border: 0;
        border-radius: 12px;
        font-size: 11px;
        font-weight: 600;
    }
    .topbar .nav-primary a[aria-current="page"] { border: 0; }
    .nav-icon { width: 21px; height: 21px; }

    /* La fila de acciones fija de la conversacion se apoya sobre la barra. */
    #chat .actions { bottom: calc(64px + env(safe-area-inset-bottom)); }
}

/* --- el tema que toca segun la ruta, destacado entre los libres --- */
.suggested-topic {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    padding: 16px 18px;
    margin: 18px 0 6px;
    background: var(--panel);
    border: 1px solid var(--accent);
    border-radius: 14px;
    box-shadow: var(--shadow);
}
.suggested-topic strong { display: block; font-size: 17px; margin-top: 3px; }
.suggested-topic p { margin: 4px 0 0; font-size: 14px; }

/* --- ilustracion de la escena de escucha --- */
.listen-scene { margin: 0 0 14px; }
.listen-scene img {
    display: block;
    width: 100%;
    max-width: 560px;
    height: auto;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}

/* --- cada pantalla explica para que sirve --- */
.screen-purpose {
    margin: 0 0 18px;
    font-size: 15px;
    color: var(--muted);
}
.wayfinding { margin-top: 28px; }
.wayfinding h2 { margin-top: 0; font-size: 16px; }
.wayfinding dl { grid-template-columns: auto 1fr; gap: 8px 16px; }
.wayfinding dt { color: var(--text); font-weight: 600; white-space: nowrap; }
.wayfinding dt a { color: var(--accent); text-decoration: none; }
.wayfinding dd { margin: 0; color: var(--muted); }

.chat-compose { margin: 14px 0; }
.chat-compose > label { display: block; margin-bottom: 6px; color: var(--muted); font-size: 13px; }
.chat-compose > div { display: grid; grid-template-columns: 1fr auto; gap: 8px; }
.chat-compose input {
    min-width: 0;
    padding: 11px 13px;
    border: 1px solid var(--line-strong);
    border-radius: 9px;
    background: var(--surface);
    color: var(--text);
    font: inherit;
}
.chat-compose small { display: block; margin-top: 5px; color: var(--muted); }
.coach-grid { display: grid; gap: 10px; }
.coach-card { display: grid; gap: 7px; padding: 16px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); }
.coach-card strong { font-size: 16px; }
.coach-card p, .coach-card small { margin: 0; color: var(--muted); }
.coach-card .button-link { justify-self: start; margin-top: 4px; }
.empty-guidance h2 { margin-top: 0; }

.unit,
.vocab li,
.listen-units li,
.topic,
.thread,
.exam-question,
.suggested-topic,
.coach-card {
    background: linear-gradient(145deg, var(--surface-raised), var(--surface));
}
.card,
.panel,
.stats div,
.training-card,
.course-level {
    border-top-color: color-mix(in srgb, var(--line) 55%, var(--ink));
}
.section-title { margin-top: 22px; color: var(--muted); font-size: 13px; letter-spacing: .08em; text-transform: uppercase; }

/* --- portada de entrenamiento --- */
.page-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 22px; }
.page-head h1 { margin: 3px 0 5px; font-size: 34px; }
.page-head p { max-width: 620px; margin: 0; color: var(--muted); }
.page-head a { color: var(--accent); }
.training-recommendation {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 16px;
    padding: 18px 20px;
    border: 1px solid color-mix(in srgb, var(--accent) 55%, var(--line));
    border-radius: var(--radius);
    background: linear-gradient(120deg, color-mix(in srgb, var(--accent-soft) 48%, var(--surface)), var(--surface));
    box-shadow: var(--shadow);
}
.training-recommendation strong { display: block; margin-top: 3px; font-size: 17px; }
.training-recommendation p { margin: 3px 0 0; color: var(--muted); }
.free-practice-note {
    display: flex;
    align-items: center;
    gap: 13px;
    margin-bottom: 16px;
    padding: 14px 16px;
    border: 1px solid color-mix(in srgb, var(--accent) 38%, var(--line));
    border-radius: 14px;
    background: color-mix(in srgb, var(--accent-soft) 24%, var(--surface));
}
.free-practice-note > span {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    flex: 0 0 36px;
    border-radius: 11px;
    background: var(--accent);
    color: var(--accent-ink);
    font-weight: 800;
}
.free-practice-note p { margin: 0; color: var(--muted); font-size: 14px; }
.free-practice-note a { color: var(--accent); }
.training-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.training-card {
    position: relative;
    display: grid;
    grid-template-columns: 52px 1fr;
    column-gap: 14px;
    align-items: start;
    min-height: 180px;
    padding: 20px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    color: var(--text);
    background: linear-gradient(145deg, var(--surface-raised), var(--surface));
    box-shadow: var(--shadow);
    text-decoration: none;
    transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.training-card:hover { transform: translateY(-2px); border-color: var(--accent); box-shadow: var(--shadow-raised); }
.training-card-primary { grid-column: 1 / -1; min-height: 150px; }
.training-icon {
    grid-row: 1 / span 4;
    display: grid;
    place-items: center;
    width: 52px;
    height: 52px;
    border-radius: 15px;
    color: var(--accent);
    background: color-mix(in srgb, var(--accent-soft) 48%, transparent);
    font-family: "Manrope", sans-serif;
    font-weight: 800;
}
.training-icon svg, .category-icon svg {
    width: 25px;
    height: 25px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.training-card .eyebrow { align-self: end; }
.training-card strong { display: block; margin-top: 2px; font-size: 17px; }
.training-card p { margin: 6px 0 12px; color: var(--muted); }
.training-card small { align-self: end; color: var(--accent); font-weight: 600; }
.training-card:last-child:nth-child(odd) { grid-column: 1 / -1; min-height: 150px; }

/* --- selector tematico de pronunciacion libre --- */
.category-picker {
    margin: 0 0 18px;
    overflow: clip;
    border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line));
    border-radius: var(--radius);
    background: linear-gradient(145deg, var(--surface-raised), var(--surface));
    box-shadow: var(--shadow);
}
.category-picker > summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 19px;
    list-style: none;
    cursor: pointer;
}
.category-picker > summary::-webkit-details-marker { display: none; }
.category-picker > summary small,
.category-picker > summary strong { display: block; }
.category-picker > summary small { color: var(--muted); font-size: 12px; }
.category-picker > summary strong { margin-top: 2px; }
.category-change { color: var(--accent); font-size: 13px; font-weight: 700; }
.category-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 9px;
    padding: 12px;
    border-top: 1px solid var(--line);
    background: color-mix(in srgb, var(--surface-2) 48%, transparent);
}
.category-grid a {
    display: grid;
    grid-template-columns: 38px 1fr;
    column-gap: 10px;
    align-items: center;
    min-height: 92px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 13px;
    color: var(--text);
    background: var(--surface);
    text-decoration: none;
}
.category-grid a:hover,
.category-grid a[aria-current="true"] { border-color: var(--accent); box-shadow: 0 0 0 3px var(--glow); }
.category-icon {
    grid-row: 1 / span 2;
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border-radius: 11px;
    color: var(--accent);
    background: var(--accent-soft);
}
.category-icon svg { width: 21px; height: 21px; }
.category-grid strong { align-self: end; font-size: 14px; }
.category-grid small { align-self: start; color: var(--muted); font-size: 11px; line-height: 1.35; }

@media (max-width: 680px) {
    /* El hueco de abajo sigue reservando el alto de la barra de navegacion:
       esta regla va despues de la de 720px y le pisaria el padding. */
    main { padding: 24px 16px calc(76px + env(safe-area-inset-bottom)); }
    /* El titulo y el enlace de vuelta no caben en la misma linea. */
    .page-head { flex-direction: column; align-items: flex-start; gap: 12px; }
    .page-head h1 { font-size: 28px; }
    .training-recommendation { align-items: flex-start; flex-direction: column; }
    .training-grid { grid-template-columns: 1fr; }
    .training-card-primary { grid-column: auto; }
    .training-card:last-child:nth-child(odd) { grid-column: auto; }
    .category-grid { grid-template-columns: 1fr; }
    .login-shell { min-height: 0; grid-template-columns: 1fr; gap: 32px; }
    .login-promise h1 { font-size: 34px; }
    .login-promise > p { font-size: 16px; }
    .login-points { margin-top: 22px; }
    .login { max-width: none; }
}

/* --- mapa del curso: niveles y unidades plegables --- */
.course-levels { display: grid; gap: 12px; }
.course-level {
    overflow: clip;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: linear-gradient(145deg, var(--surface-raised), var(--surface));
    box-shadow: var(--shadow);
}
.course-level > summary {
    display: grid;
    grid-template-columns: 48px minmax(150px, 1fr) minmax(100px, 220px) 20px;
    gap: 14px;
    align-items: center;
    padding: 17px 19px;
    list-style: none;
    cursor: pointer;
}
.course-level > summary::-webkit-details-marker,
.course-unit > summary::-webkit-details-marker { display: none; }
.level-mark { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; color: var(--accent); background: color-mix(in srgb, var(--accent-soft) 48%, transparent); font-family: "Manrope", sans-serif; font-weight: 800; }
.level-summary-text strong, .level-summary-text small { display: block; }
.level-summary-text small { margin-top: 2px; color: var(--muted); }
.level-summary-bar { height: 6px; overflow: hidden; border-radius: 8px; background: var(--surface-2); }
.level-summary-bar span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--accent), var(--mint-deep)); }
.level-chevron { color: var(--muted); transition: transform .18s ease; }
.course-level[open] .level-chevron { transform: rotate(180deg); }
.course-units { display: grid; gap: 7px; padding: 0 12px 12px; border-top: 1px solid var(--line); }
.course-unit { border: 1px solid transparent; border-radius: 12px; background: color-mix(in srgb, var(--surface-2) 72%, transparent); }
.course-unit[open], .course-unit.unit-current { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); }
.course-unit > summary { display: grid; grid-template-columns: 64px 1fr auto; gap: 12px; align-items: center; padding: 12px 14px; list-style: none; cursor: pointer; }
.course-unit-name strong, .course-unit-name small { display: block; }
.course-unit-name small { margin-top: 2px; color: var(--muted); }
.course-unit.unit-current .course-unit-name small { color: var(--accent); }
.course-unit-detail { padding: 0 14px 15px 90px; }
.course-unit-detail p { margin: 0 0 8px; }

@media (max-width: 600px) {
    .course-level > summary { grid-template-columns: 44px 1fr 18px; gap: 10px; padding: 14px; }
    .level-mark { width: 44px; height: 44px; }
    .level-summary-bar { display: none; }
    .course-unit > summary { grid-template-columns: 58px 1fr auto; padding-inline: 10px; }
    .course-unit-detail { padding-left: 78px; }
}

/* --- progreso centrado en decisiones, no en repetir el mapa del curso --- */
.level-progress-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.level-progress-card { margin: 0; }
.history-panel { margin-top: 18px; overflow: clip; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.history-panel > summary { display: flex; justify-content: space-between; gap: 12px; padding: 15px 17px; list-style: none; cursor: pointer; font-family: "Manrope", sans-serif; font-weight: 700; }
.history-panel > summary::-webkit-details-marker { display: none; }
.history-panel > summary span { color: var(--muted); font-family: "DM Sans", sans-serif; font-weight: 500; }
.history-content { padding: 0 16px 16px; border-top: 1px solid var(--line); }
.history-content .table-scroll { margin-top: 10px; }

@media (max-width: 680px) {
    .level-progress-grid { grid-template-columns: 1fr; }
}

/* ===========================================================================
   PORTADA
   Tres bloques y en este orden: que toca ahora, como voy, y por donde entrar
   suelto. La jerarquia visual la marca el tamano, no el color: solo el heroe
   lleva superficie elevada y acento.
   =========================================================================== */

/* Texto que solo leen los lectores de pantalla. No usar hidden ni display:
   none, que los sacaria tambien del arbol de accesibilidad. */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}

.section-note { margin: -4px 0 12px; font-size: 14px; color: var(--muted); }

.pill {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 2px 10px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .04em;
}
.pill-level {
    /* Los respaldos son neutros a proposito: un rgba claro fijo se veria
       ilegible en modo oscuro justo en los navegadores sin color-mix. */
    background: rgba(127, 127, 127, .16);
    background: color-mix(in srgb, var(--accent-soft) 75%, transparent);
    color: var(--mint-deep);
    border: 1px solid rgba(127, 127, 127, .22);
    border: 1px solid color-mix(in srgb, var(--accent-soft) 90%, transparent);
}

/* --- heroe: la unidad de hoy --- */
.hero {
    display: flex;
    align-items: center;
    gap: 28px;
    margin-bottom: 26px;
    padding: 26px 28px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background:
        radial-gradient(circle at 100% 0%, var(--glow), transparent 60%),
        linear-gradient(145deg, var(--surface-raised), var(--panel));
    box-shadow: var(--shadow-raised);
}
.hero-main { flex: 1; min-width: 0; }
.hero h1 { font-size: 34px; margin: 6px 0 8px; }
.hero-goal { margin: 0 0 12px; font-size: 16px; }
.hero-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin: 0;
    font-size: 14px;
    color: var(--muted);
}
.hero-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 20px;
}
.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 13px 22px;
    font-size: 16px;
    font-weight: 700;
    box-shadow: 0 10px 24px var(--glow);
}
.hero-cta-icon {
    width: 19px;
    height: 19px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.hero-cta-hint { font-size: 13px; color: var(--muted); }
.hero-done { text-align: left; }

/* --- anillo de avance --- */
.hero-ring { position: relative; flex: 0 0 132px; width: 132px; height: 132px; }
.hero-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring-track, .ring-value { fill: none; stroke-width: 7; }
.ring-track { stroke: var(--line); }
.ring-value {
    stroke: var(--accent);
    stroke-linecap: round;
    transition: stroke-dasharray .6s ease;
}
.ring-label {
    position: absolute;
    inset: 0;
    display: grid;
    place-content: center;
    text-align: center;
    line-height: 1.15;
}
.ring-label strong {
    display: block;
    font-size: 28px;
    letter-spacing: -0.03em;
    font-variant-numeric: tabular-nums;
}
.ring-label strong small { font-size: 15px; font-weight: 600; color: var(--muted); }
.ring-label span { font-size: 12px; color: var(--muted); }

/* --- tablero de constancia --- */
.board {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 14px;
    margin-bottom: 8px;
}
.board-card {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: linear-gradient(145deg, var(--surface-raised), var(--panel));
    box-shadow: var(--shadow);
}
.board-head h3 {
    margin: 4px 0 0;
    font-size: 28px;
    letter-spacing: -0.02em;
    font-variant-numeric: tabular-nums;
}
.board-head h3 small { font-size: 14px; font-weight: 500; color: var(--muted); letter-spacing: 0; }
.board-foot { margin: auto 0 0; font-size: 13px; color: var(--muted); }
.board-foot strong { color: var(--text); font-size: 14px; }
.board-foot a { color: var(--accent); }

/* --- la semana en barras --- */
.week {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
    align-items: end;
    list-style: none;
    margin: 0;
    padding: 0;
    height: 84px;
}
.week li { display: flex; flex-direction: column; gap: 6px; height: 100%; }
.week-bar {
    display: flex;
    align-items: flex-end;
    flex: 1;
    width: 60%;
    margin: 0 auto;
    border-radius: 5px;
    /* El carril solo dice hasta donde puede llegar la barra: si pesa tanto
       como el dato, un dia en blanco se lee como un dia lleno. */
    background: rgba(127, 127, 127, .10);
}
.week-bar i {
    display: block;
    width: 100%;
    border-radius: 5px;
    background: rgba(127, 127, 127, .38);
    background: color-mix(in srgb, var(--accent) 32%, var(--surface-2));
}
.week-active .week-bar i { background: var(--accent); }
.week-day { text-align: center; font-size: 11px; color: var(--muted); }
.week-today .week-day {
    color: var(--accent);
    font-weight: 700;
}
.week-today .week-bar { outline: 1px solid var(--line-strong); outline-offset: 2px; }

/* --- avance por nivel --- */
.level-list { list-style: none; display: grid; gap: 11px; margin: 0; padding: 0; }
.level-list li { display: flex; align-items: center; gap: 11px; }
.level-list .pill { flex: 0 0 40px; justify-content: center; }
.level-bar {
    flex: 1;
    height: 9px;
    border-radius: 999px;
    background: var(--surface-2);
    overflow: hidden;
}
.level-bar i {
    display: block;
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--accent), var(--forest-2));
}
.level-count {
    flex: 0 0 auto;
    font-size: 13px;
    color: var(--muted);
    font-variant-numeric: tabular-nums;
}

/* --- accesos a practica libre --- */
.quick {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
}
.quick-card {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 16px 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--panel);
    color: var(--text);
    text-decoration: none;
    transition: border-color .18s ease, transform .18s ease, box-shadow .18s ease;
}
.quick-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}
.quick-card strong { font-size: 15px; }
.quick-card small { font-size: 12px; color: var(--muted); }
.quick-icon {
    width: 22px;
    height: 22px;
    margin-bottom: 4px;
    fill: none;
    stroke: var(--accent);
    stroke-width: 1.7;
    stroke-linecap: round;
    stroke-linejoin: round;
}

@media (max-width: 720px) {
    .hero {
        flex-direction: column-reverse;
        align-items: stretch;
        gap: 18px;
        padding: 20px 18px;
    }
    .hero h1 { font-size: 24px; }
    .hero-ring { flex: 0 0 auto; width: 104px; height: 104px; margin: 0 auto; }
    .ring-label strong { font-size: 24px; }
    .hero-actions { margin-top: 16px; }
    .hero-cta { width: 100%; justify-content: center; }
    .hero-cta-hint { width: 100%; text-align: center; }
    .quick { grid-template-columns: repeat(2, 1fr); }
}