/* ==========================================================
   verbos-didactico.css — componentes didácticos compartidos por
   90wichtigsteverben.html, verbenmitpraefix.html y verbkonjugation.html
   (guías, filtros, filas desplegables, práctica, modo estudio)
   ========================================================== */
:root{
    --vd-pref:#dc2626;
    --vd-fin:#2563eb;
    --vd-gold:#b7791f;
    --vd-ok:#16a34a;
    --vd-bad:#dc2626;
    --vd-soft:#fff7ed;
    --vd-irr-bg:rgba(245,158,11,.18);
}
html.dark-mode{
    --vd-pref:#f87171;
    --vd-fin:#60a5fa;
    --vd-gold:#fbbf24;
    --vd-ok:#4ade80;
    --vd-bad:#f87171;
    --vd-soft:rgba(245,158,11,.12);
    --vd-irr-bg:rgba(245,158,11,.22);
}

/* ---------- Guía "cómo leer / cómo funciona" ---------- */
.vd-guide{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin:14px 0 6px;}
.vd-card{background:var(--bg-card);border:1px solid var(--border-soft);border-radius:var(--radius-lg);padding:16px 18px;box-shadow:var(--shadow-sm);}
.vd-card h3{margin:0 0 6px;font-size:15px;font-weight:700;color:var(--text-heading);display:flex;align-items:center;gap:8px;}
.vd-card p,.vd-card li{margin:0;font-size:14px;line-height:1.55;color:var(--text-body);}
.vd-card ul{margin:6px 0 0;padding-left:18px;}
.vd-card li{margin:3px 0;}
.vd-num{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:50%;background:var(--primary);color:#fff;font-size:13px;font-weight:700;flex:0 0 auto;}
.vd-sub{font-size:13px;color:var(--text-muted);margin:2px 0 8px;}
.vd-h3{font-size:17px;font-weight:700;color:var(--text-heading);margin:26px 0 4px;}

/* fila-modelo: infinitivo → formas */
.vd-model{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:8px 0 2px;}
.vd-pill{display:inline-flex;flex-direction:column;align-items:center;padding:6px 10px;border-radius:12px;background:var(--bg-page);border:1px solid var(--border-soft);font-weight:600;font-size:14px;color:var(--text-heading);line-height:1.2;}
.vd-pill small{font-size:10px;font-weight:600;letter-spacing:.3px;text-transform:uppercase;color:var(--text-muted);margin-bottom:2px;}
.vd-arrow{color:var(--text-muted);font-weight:700;}
.vd-pill b{color:var(--primary);}

/* ---------- Etiquetas de tipo ---------- */
.vd-t{display:inline-block;font-size:.62rem;font-weight:700;padding:.15rem .55rem;border-radius:20px;text-transform:uppercase;letter-spacing:.3px;color:#fff;vertical-align:middle;white-space:nowrap;}
.vd-t-schwach{background:#16a34a;}
.vd-t-stark{background:#f59e0b;}
.vd-t-gemischt{background:#8b5cf6;}
.vd-t-modal{background:#0ea5e9;}
.vd-t-hilfs{background:#64748b;}
.vd-t-sein{background:#475569;}
.vd-t-trenn{background:#dc2626;}
.vd-legend{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;font-size:13px;color:var(--text-muted);}
.vd-legend span.item{display:inline-flex;align-items:center;gap:6px;}

/* ---------- Barra de herramientas ---------- */
.vd-toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:18px 0 10px;}
.vd-search{flex:1 1 220px;min-width:0;padding:10px 14px;border-radius:999px;border:1px solid var(--border-soft);background:var(--bg-card);color:var(--text-body);font:inherit;font-size:14px;}
.vd-search:focus{outline:2px solid var(--primary-lighter);outline-offset:1px;}
.vd-chips{display:flex;flex-wrap:wrap;gap:6px;}
.vd-chip{border:1px solid var(--border-soft);background:var(--bg-card);color:var(--text-body);border-radius:999px;padding:7px 13px;font:inherit;font-size:13px;font-weight:600;cursor:pointer;transition:.15s;}
.vd-chip:hover{border-color:var(--primary-lighter);}
.vd-chip.on{background:var(--primary);border-color:var(--primary);color:#fff;}
.vd-toggle{border:1px dashed var(--primary-lighter);background:transparent;color:var(--primary);border-radius:999px;padding:7px 14px;font:inherit;font-size:13px;font-weight:700;cursor:pointer;}
.vd-toggle.on{background:var(--primary);color:#fff;border-style:solid;}
.vd-count{font-size:13px;color:var(--text-muted);margin:2px 2px 8px;}
.vd-az{display:flex;flex-wrap:wrap;gap:5px;margin:6px 0 4px;}
.vd-az a{min-width:30px;text-align:center;padding:5px 8px;border-radius:8px;border:1px solid var(--border-soft);background:var(--bg-card);color:var(--text-heading);font-size:13px;font-weight:700;text-decoration:none;}
.vd-az a:hover{background:var(--primary);color:#fff;border-color:var(--primary);}
.vd-az a.off{opacity:.35;pointer-events:none;}
.vd-prog{height:10px;border-radius:99px;background:var(--border-soft);overflow:hidden;margin:6px 0 2px;}
.vd-prog>i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--primary),var(--vd-gold));border-radius:99px;transition:width .35s;}

/* ---------- Tablas interactivas ---------- */
.vd-table tbody tr.vd-row{cursor:pointer;}
.vd-table tbody tr.vd-row.open{background:var(--vd-soft) !important;}
.vd-table td.word{white-space:nowrap;}
.vd-table td.word .vd-wordwrap{display:inline-flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:center;}
.vd-caret{display:inline-block;width:0;height:0;border-left:5px solid transparent;border-right:5px solid transparent;border-top:6px solid var(--text-muted);transition:transform .2s;margin-left:2px;}
tr.vd-row.open .vd-caret{transform:rotate(180deg);}
.vd-star{border:none;background:transparent;cursor:pointer;font-size:18px;line-height:1;padding:2px;color:#cbd5e1;transition:.15s;}
.vd-star.on{color:#f59e0b;}
.vd-star:hover{transform:scale(1.2);}
tr.vd-detail{display:none;}
tr.vd-detail.show{display:table-row;}
tr.vd-detail td{text-align:left !important;background:var(--vd-soft);padding:14px 16px !important;}
tr.vd-detail:hover{background:var(--vd-soft) !important;}
.vd-ex{font-size:15px;color:var(--text-heading);line-height:1.6;display:block;}
.vd-ex .audio-btn,.vd-lab-out .audio-btn{margin-left:8px;vertical-align:middle;}
.vd-ex-es{font-size:14px;color:var(--text-muted);font-style:italic;margin:2px 0 8px;}
.vd-notes{display:flex;flex-direction:column;gap:6px;margin-top:6px;}
.vd-note{font-size:13.5px;line-height:1.5;color:var(--text-body);padding:8px 12px;border-radius:10px;background:var(--bg-page);border-left:4px solid var(--vd-gold);}
.vd-note.pf{border-left-color:var(--vd-fin);}
.vd-note.tp{border-left-color:var(--primary);}
.vd-forms{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 2px;}
.vd-form{padding:6px 11px;border-radius:10px;border:1px solid var(--border-soft);background:var(--bg-page);font-size:13.5px;color:var(--text-heading);}
.vd-form small{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.3px;color:var(--text-muted);font-weight:700;}
mark.vd-pref,.vd-pref{background:transparent;color:var(--vd-pref);font-weight:800;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;}
mark.vd-fin,.vd-fin{background:transparent;color:var(--vd-fin);font-weight:800;}
.vd-blank{display:inline-block;min-width:54px;border-bottom:3px dashed var(--primary);text-align:center;color:var(--primary);font-weight:800;}

/* ---------- Modo estudio (ocultar para recordar) ---------- */
body.vd-study .vd-table td.vd-h{filter:blur(7px);cursor:pointer;user-select:none;transition:filter .2s;}
body.vd-study .vd-table td.vd-h.vd-rev{filter:none;}
body.vd-study .vd-hide-es{filter:blur(6px);cursor:pointer;}
body.vd-study .vd-hide-es.vd-rev{filter:none;}

/* ---------- Práctica (quiz) ---------- */
.vd-quiz{background:var(--bg-card);border:2px solid var(--primary-lighter);border-radius:var(--radius-lg);padding:18px;margin:18px 0;box-shadow:var(--shadow-md);}
.vd-quiz h3{margin:0 0 4px;font-size:18px;color:var(--text-heading);}
.vd-quiz p{margin:0 0 10px;font-size:14px;color:var(--text-body);}
.vd-btn{border:none;border-radius:999px;background:var(--primary);color:#fff;padding:10px 20px;font:inherit;font-size:14px;font-weight:700;cursor:pointer;transition:.15s;}
.vd-btn:hover{background:var(--primary-dark);}
.vd-btn.ghost{background:transparent;color:var(--primary);border:1px solid var(--primary-lighter);}
.vd-btn.ghost:hover{background:var(--vd-soft);}
.vd-q-head{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap;font-size:12px;font-weight:700;color:var(--text-muted);margin-bottom:8px;}
.vd-q-tag{text-transform:uppercase;letter-spacing:.4px;color:var(--primary);}
.vd-q-prompt{font-size:18px;font-weight:600;color:var(--text-heading);line-height:1.45;margin:4px 0 12px;}
.vd-q-prompt small{display:block;font-size:13px;font-weight:500;color:var(--text-muted);margin-top:4px;}
.vd-opts{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;}
.vd-opt{border:2px solid var(--border-soft);background:var(--bg-page);color:var(--text-heading);border-radius:14px;padding:12px 10px;font:inherit;font-size:16px;font-weight:600;cursor:pointer;transition:.15s;text-align:center;}
.vd-opt:hover:not(:disabled){border-color:var(--primary-lighter);transform:translateY(-1px);}
.vd-opt.ok{border-color:var(--vd-ok);background:rgba(34,197,94,.16);}
.vd-opt.bad{border-color:var(--vd-bad);background:rgba(239,68,68,.14);}
.vd-opt:disabled{cursor:default;}
.vd-input{width:100%;padding:12px 14px;border-radius:12px;border:2px solid var(--border-soft);background:var(--bg-page);color:var(--text-heading);font:inherit;font-size:17px;}
.vd-input:focus{outline:none;border-color:var(--primary-lighter);}
.vd-input.ok{border-color:var(--vd-ok);}
.vd-input.bad{border-color:var(--vd-bad);}
.vd-q-feedback{min-height:22px;margin:12px 0 0;font-size:14.5px;line-height:1.5;color:var(--text-body);}
.vd-q-feedback .good{color:var(--vd-ok);font-weight:800;}
.vd-q-feedback .wrong{color:var(--vd-bad);font-weight:800;}
.vd-q-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px;}
.vd-result{text-align:center;padding:10px 0;}
.vd-result .big{font-size:42px;font-weight:800;color:var(--primary);line-height:1.1;}

/* ---------- Laboratorio de oraciones (separables) ---------- */
.vd-lab{display:grid;gap:12px;}
.vd-lab select{padding:10px 14px;border-radius:12px;border:1px solid var(--border-soft);background:var(--bg-page);color:var(--text-heading);font:inherit;font-size:15px;max-width:100%;}
.vd-lab-out{font-size:22px;font-weight:600;color:var(--text-heading);line-height:1.6;padding:14px 16px;border-radius:14px;background:var(--bg-page);border:1px dashed var(--primary-lighter);min-height:64px;display:block;}
.vd-lab-why{font-size:14px;color:var(--text-body);line-height:1.55;}

/* ---------- Tiempos verbales (conjugación) ---------- */
.vd-tense{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin:14px 0 6px;}
.vd-tense .vd-card{border-top:5px solid var(--primary);}
.vd-tense .vd-card:nth-child(2){border-top-color:#f59e0b;}
.vd-tense .vd-card:nth-child(3){border-top-color:#0ea5e9;}
.vd-tense .vd-card:nth-child(4){border-top-color:#8b5cf6;}
.vd-tense .vd-card .formula{display:block;font-weight:700;color:var(--text-heading);margin:4px 0 6px;font-size:14px;}
.vd-persons{display:grid;gap:8px;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));margin:10px 0;}
.vd-persons div{background:var(--bg-page);border:1px solid var(--border-soft);border-radius:12px;padding:8px 10px;font-size:13px;color:var(--text-muted);}
.vd-persons b{display:block;font-size:16px;color:var(--text-heading);}
.vd-jump{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0 14px;}
.vd-jump a{padding:6px 12px;border-radius:999px;border:1px solid var(--border-soft);background:var(--bg-card);color:var(--text-heading);font-size:13px;font-weight:700;text-decoration:none;}
.vd-jump a:hover{background:var(--primary);color:#fff;border-color:var(--primary);}
.vd-vhead{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:2px 0 10px;}
.vd-tense-tabs{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 10px;}
.vd-table td.vd-clk{cursor:pointer;}
.vd-table td.vd-clk:hover{background:rgba(220,38,38,.08);}
.vd-table td.vd-irr{background:var(--vd-irr-bg);font-weight:700;color:var(--text-heading);}
.vd-table.vd-only-1 th:not(:nth-child(1)):not(:nth-child(2)),.vd-table.vd-only-1 td:not(:nth-child(1)):not(:nth-child(2)){display:none;}
.vd-table.vd-only-2 th:not(:nth-child(1)):not(:nth-child(3)),.vd-table.vd-only-2 td:not(:nth-child(1)):not(:nth-child(3)){display:none;}
.vd-table.vd-only-3 th:not(:nth-child(1)):not(:nth-child(4)),.vd-table.vd-only-3 td:not(:nth-child(1)):not(:nth-child(4)){display:none;}
.vd-table.vd-only-4 th:not(:nth-child(1)):not(:nth-child(5)),.vd-table.vd-only-4 td:not(:nth-child(1)):not(:nth-child(5)){display:none;}
.vd-table.vd-only-1,.vd-table.vd-only-2,.vd-table.vd-only-3,.vd-table.vd-only-4{min-width:0;}
.vd-exgrid{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin:14px 0 4px;}
.vd-exbox{background:var(--bg-card);border:1px solid var(--border-soft);border-left:5px solid var(--primary);border-radius:12px;padding:10px 12px;}
.vd-exbox:nth-child(2){border-left-color:#f59e0b;}
.vd-exbox:nth-child(3){border-left-color:#0ea5e9;}
.vd-exbox:nth-child(4){border-left-color:#8b5cf6;}
.vd-exbox small{display:block;font-size:10.5px;font-weight:700;text-transform:uppercase;letter-spacing:.4px;color:var(--text-muted);margin-bottom:3px;}
.vd-exbox .de{font-size:15px;font-weight:600;color:var(--text-heading);display:flex;gap:8px;align-items:flex-start;}
.vd-exbox .es{font-size:13.5px;color:var(--text-muted);font-style:italic;margin-top:2px;}
.vd-tips{margin:12px 0 0;}
.vd-tips .vd-note{margin-top:6px;}
.vd-hint-legend{font-size:13px;color:var(--text-muted);margin:8px 2px;display:flex;gap:14px;flex-wrap:wrap;align-items:center;}
.vd-sw{display:inline-block;width:14px;height:14px;border-radius:4px;background:var(--vd-irr-bg);border:1px solid rgba(245,158,11,.6);vertical-align:-2px;margin-right:4px;}

@media(max-width:600px){
    .vd-q-prompt{font-size:16px;}
    .vd-lab-out{font-size:18px;}
    .vd-opts{grid-template-columns:1fr 1fr;}
    .vd-quiz{padding:14px;}
    tr.vd-detail td{padding:12px !important;}
}

/* ---------- Móvil: las filas se convierten en tarjetas legibles ---------- */
@media(max-width:700px){
    .vd-cards{min-width:0 !important;display:block;}
    .vd-cards thead{display:none;}
    .vd-cards tbody{display:block;}
    .vd-cards tr.vd-row{display:grid;grid-template-columns:1fr 1fr;gap:6px 12px;padding:12px 14px;border-bottom:1px solid var(--border-soft);}
    .vd-cards tr.vd-row td{display:block;border:none !important;padding:2px 0 !important;text-align:left !important;font-size:14.5px;min-width:0;overflow-wrap:anywhere;}
    .vd-cards tr.vd-row td[data-l]::before{content:attr(data-l);display:block;font-size:10px;font-weight:700;letter-spacing:.4px;text-transform:uppercase;color:var(--text-muted);margin-bottom:1px;}
    .vd-cards tr.vd-row td.word{grid-column:1 / -1;white-space:normal;}
    .vd-cards tr.vd-row td.word .vd-wordwrap{justify-content:flex-start;}
    .vd-cards tr.vd-row td.wide{grid-column:1 / -1;}
    .vd-cards tr.vd-detail.show{display:block;}
    .vd-cards tr.vd-detail td{display:block;}
    .vd-cards .lesson-table-wrap{overflow-x:visible;}
}