/* ReadHebrew - Reading Drill pages (Hard Concepts, Double Letters, Cholam,
   Practice Reading). Built on the same glass / indigo tokens the rest of the
   site uses, so these pages sit visually next to the lessons and quizzes. */

:root {
    --drill-nav-h: 60px;
    --drill-ink: #e6e9f2;
    --drill-ink-soft: rgba(230, 233, 242, 0.68);
    --drill-ink-faint: rgba(230, 233, 242, 0.42);
    --drill-glass: rgba(13, 17, 23, 0.30);
    --drill-glass-solid: rgba(13, 17, 23, 0.55);
    --drill-line: rgba(255, 255, 255, 0.10);
    --drill-indigo: #8b5cf6;
    --drill-indigo-light: #c4b5fd;
    --drill-na: #34d399;
    --drill-nach: #f87171;
    --drill-a: #60a5fa;
    --drill-b: #fbbf24;
    --drill-gold: #fbbf24;
    --hebrew-font: 'Times New Roman', 'David', 'Frank Ruehl CLM', serif;
}

.drill-page * { margin: 0; padding: 0; box-sizing: border-box; }
.drill-page [hidden] { display: none !important; }

.drill-page body,
body.drill-page {
    font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    min-height: 100vh;
    color: var(--drill-ink);
    overflow-x: hidden;
}

@media (max-width: 768px) {
    body.has-navigation { padding-top: var(--drill-nav-h); }
}

@media (prefers-reduced-motion: reduce) {
    .drill-wrap *, .drill-wrap *::before, .drill-wrap *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.drill-wrap {
    position: relative;
    z-index: 1;
    max-width: 1000px;
    margin: 0 auto;
    padding: clamp(16px, 3vw, 40px);
    display: flex;
    flex-direction: column;
    gap: 22px;
}

/* ---------- header ---------- */

.drill-header {
    background: var(--drill-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--drill-line);
    border-radius: 22px;
    padding: clamp(22px, 4vw, 34px);
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.drill-eyebrow {
    font-size: 0.78rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--drill-indigo-light);
    margin-bottom: 10px;
}

.drill-header h1 {
    font-size: clamp(1.6rem, 4.2vw, 2.4rem);
    font-weight: 800;
    line-height: 1.2;
    text-shadow: 0 0 30px rgba(139, 92, 246, 0.45);
}

.drill-header .drill-sub {
    margin-top: 12px;
    color: var(--drill-ink-soft);
    font-size: clamp(0.95rem, 2.2vw, 1.05rem);
    line-height: 1.65;
    max-width: 68ch;
    margin-left: auto;
    margin-right: auto;
}

.drill-hero-hebrew {
    font-family: var(--hebrew-font);
    font-size: clamp(2.6rem, 8vw, 4rem);
    direction: rtl;
    line-height: 1.4;
    margin-bottom: 6px;
    background: linear-gradient(135deg, #a78bfa, #60a5fa, #34d399);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 24px rgba(139, 92, 246, 0.35));
}

/* ---------- part / pair tabs ---------- */

.drill-tabs {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding: 4px 2px 10px;
    scrollbar-width: thin;
    -webkit-overflow-scrolling: touch;
}

.drill-tab {
    flex: 0 0 auto;
    padding: 11px 18px;
    border-radius: 999px;
    border: 1px solid var(--drill-line);
    background: var(--drill-glass-solid);
    color: var(--drill-ink-soft);
    font-family: inherit;
    font-size: 0.92rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.18s ease, border-color 0.18s ease, color 0.18s ease, background 0.18s ease;
    white-space: nowrap;
}

.drill-tab:hover { transform: translateY(-2px); color: var(--drill-ink); }
.drill-tab:focus-visible { outline: 2px solid var(--drill-indigo-light); outline-offset: 2px; }

.drill-tab[aria-selected="true"] {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.55), rgba(99, 102, 241, 0.45));
    border-color: rgba(196, 181, 253, 0.5);
    color: #fff;
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.3);
}

.drill-tab .tab-heb {
    font-family: var(--hebrew-font);
    font-size: 1.15rem;
    margin-inline-start: 7px;
    vertical-align: -1px;
}

/* ---------- rule card ---------- */

.drill-rule {
    background: var(--drill-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--drill-line);
    border-inline-start: 4px solid var(--drill-indigo);
    border-radius: 18px;
    padding: clamp(18px, 3vw, 26px);
}

.drill-rule h2 {
    font-size: clamp(1.1rem, 2.6vw, 1.35rem);
    font-weight: 700;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.drill-rule .rule-tag {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(139, 92, 246, 0.22);
    border: 1px solid rgba(196, 181, 253, 0.35);
    color: var(--drill-indigo-light);
    font-weight: 700;
}

.drill-rule p {
    color: var(--drill-ink-soft);
    line-height: 1.7;
    font-size: 0.98rem;
}

.drill-rule .rule-example {
    margin-top: 14px;
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    padding-top: 14px;
    border-top: 1px solid var(--drill-line);
}

.drill-rule .rule-example .ex-heb {
    font-family: var(--hebrew-font);
    font-size: clamp(1.6rem, 4.5vw, 2.1rem);
    direction: rtl;
}

.drill-rule .rule-example .ex-lat {
    color: var(--drill-gold);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

/* ---------- toolbar ---------- */

.drill-toolbar {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
}

.drill-btn {
    padding: 10px 16px;
    border-radius: 12px;
    border: 1px solid rgba(139, 92, 246, 0.38);
    background: rgba(139, 92, 246, 0.16);
    color: var(--drill-indigo-light);
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.18s ease, color 0.2s ease;
}

.drill-btn:hover { background: rgba(139, 92, 246, 0.3); transform: translateY(-2px); color: #fff; }
.drill-btn:focus-visible { outline: 2px solid var(--drill-indigo-light); outline-offset: 2px; }
.drill-btn[aria-pressed="true"] {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.6), rgba(99, 102, 241, 0.5));
    color: #fff;
    border-color: rgba(196, 181, 253, 0.55);
}

/* ---------- legend ---------- */

.drill-legend {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    justify-content: center;
    font-size: 0.85rem;
    color: var(--drill-ink-soft);
}

.legend-chip {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 6px 12px;
    border-radius: 999px;
    background: var(--drill-glass-solid);
    border: 1px solid var(--drill-line);
}

.legend-dot { width: 10px; height: 10px; border-radius: 50%; flex: 0 0 auto; }
.legend-dot.na { background: var(--drill-na); }
.legend-dot.nach { background: var(--drill-nach); }
.legend-dot.a { background: var(--drill-a); }
.legend-dot.b { background: var(--drill-b); }
.legend-dot.o { background: var(--drill-gold); }
.legend-dot.merge { background: var(--drill-na); }

/* ---------- word board ---------- */

.drill-board {
    background: var(--drill-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--drill-line);
    border-radius: 22px;
    padding: clamp(14px, 3vw, 26px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.drill-row {
    display: grid;
    grid-template-columns: 34px repeat(3, minmax(0, 1fr));
    align-items: stretch;
    gap: 10px;
    direction: rtl;
}

.drill-row-num {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--drill-ink-faint);
    direction: ltr;
}

.drill-word {
    background: var(--drill-glass-solid);
    border: 1px solid var(--drill-line);
    border-radius: 14px;
    padding: 14px 10px 12px;
    text-align: center;
    cursor: pointer;
    transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 92px;
    font-family: inherit;
    color: inherit;
    width: 100%;
}

.drill-word:hover {
    transform: translateY(-3px);
    border-color: rgba(196, 181, 253, 0.45);
    background: rgba(139, 92, 246, 0.12);
}

.drill-word:focus-visible { outline: 2px solid var(--drill-indigo-light); outline-offset: 2px; }

.drill-word.is-done {
    border-color: rgba(52, 211, 153, 0.45);
    background: rgba(16, 185, 129, 0.12);
}

.drill-word .heb {
    font-family: var(--hebrew-font);
    font-size: var(--drill-size, clamp(1.9rem, 5.4vw, 2.6rem));
    line-height: 1.55;
    direction: rtl;
    color: var(--drill-ink);
}

.drill-word .lat {
    font-size: 0.85rem;
    letter-spacing: 0.04em;
    color: var(--drill-gold);
    direction: ltr;
    min-height: 1.1em;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.drill-word.show-lat .lat,
.drill-board.all-lat .drill-word .lat { opacity: 1; }

/* letter-only rows (line 7 of the Double Letters drills) */
.drill-word.letters-only .heb { letter-spacing: 0.35em; }

/* highlight classes injected by the generated data */
.drill-board.hl .u-na   { color: var(--drill-na); }
.drill-board.hl .u-nach { color: var(--drill-nach); }
.drill-board.hl .u-a    { color: var(--drill-a); }
.drill-board.hl .u-b    { color: var(--drill-b); }
.drill-board.hl .u-o    { color: var(--drill-gold); }
.drill-board.hl .u-merge{ color: var(--drill-na); }
.drill-board.hl .u-dot  { color: var(--drill-a); }

/* the same highlight vocabulary inside the rule card's worked example */
.drill-rule .u-na   { color: var(--drill-na); }
.drill-rule .u-nach { color: var(--drill-nach); }
.drill-rule .u-a    { color: var(--drill-a); }
.drill-rule .u-b    { color: var(--drill-b); }
.drill-rule .u-o    { color: var(--drill-gold); }
.drill-rule .u-merge{ color: var(--drill-na); }
.drill-rule .u-dot  { color: var(--drill-a); }

/* Nothing inside a word card may push the row wider than the screen: the
   Hebrew and the transliteration both stay inside their own column. */
.drill-word .heb,
.drill-word .lat { max-width: 100%; overflow-wrap: anywhere; }

@media (max-width: 620px) {
    .drill-row { grid-template-columns: 20px repeat(3, minmax(0, 1fr)); gap: 6px; }
    .drill-word { padding: 10px 3px 9px; min-height: 78px; border-radius: 11px; }
    .drill-word .heb { font-size: var(--drill-size, clamp(1.25rem, 6.2vw, 1.9rem)); }
    .drill-word .lat { font-size: 0.62rem; letter-spacing: 0; }
    .drill-word.letters-only .heb { letter-spacing: 0.15em; }
    .drill-row-num { font-size: 0.7rem; }
    .drill-board { padding: 12px 8px; }
}

/* ---------- next-step call to action ---------- */

.drill-cta {
    background: linear-gradient(135deg, rgba(147, 51, 234, 0.18), rgba(251, 191, 36, 0.12));
    border: 1px solid rgba(251, 191, 36, 0.32);
    border-radius: 22px;
    padding: clamp(22px, 4vw, 34px);
    text-align: center;
}

.drill-cta h2 {
    font-size: clamp(1.2rem, 3vw, 1.6rem);
    font-weight: 800;
    margin-bottom: 10px;
    color: var(--drill-gold);
}

.drill-cta p {
    color: var(--drill-ink-soft);
    line-height: 1.7;
    max-width: 62ch;
    margin: 0 auto 20px;
}

.drill-cta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    max-width: 720px;
    margin: 0 auto;
}

.drill-cta-card {
    display: block;
    text-decoration: none;
    color: inherit;
    background: var(--drill-glass-solid);
    border: 1px solid var(--drill-line);
    border-radius: 16px;
    padding: 20px;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.drill-cta-card:hover { transform: translateY(-4px); }
.drill-cta-card.royal:hover { border-color: rgba(168, 85, 247, 0.6); }
.drill-cta-card.yakov:hover { border-color: rgba(251, 191, 36, 0.6); }

.drill-cta-card .cta-name { font-size: 1.15rem; font-weight: 800; margin-bottom: 4px; }
.drill-cta-card.royal .cta-name { color: #c4b5fd; }
.drill-cta-card.yakov .cta-name { color: var(--drill-gold); }
.drill-cta-card .cta-price { font-size: 0.85rem; color: var(--drill-ink-faint); margin-bottom: 10px; }
.drill-cta-card .cta-desc { font-size: 0.9rem; color: var(--drill-ink-soft); line-height: 1.6; }

/* ---------- practice reading (recorder) ---------- */

.tefila-board {
    background: var(--drill-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--drill-line);
    border-radius: 22px;
    padding: clamp(14px, 3vw, 26px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.tefila-line {
    background: var(--drill-glass-solid);
    border: 1px solid var(--drill-line);
    border-radius: 16px;
    padding: 16px 16px 12px;
    transition: border-color 0.2s ease;
}

.tefila-line.is-recording { border-color: rgba(248, 113, 113, 0.7); }
.tefila-line.has-take { border-color: rgba(52, 211, 153, 0.45); }

.tefila-heb {
    font-family: var(--hebrew-font);
    font-size: var(--drill-size, clamp(1.5rem, 4.6vw, 2.15rem));
    line-height: 1.85;
    direction: rtl;
    text-align: right;
    color: var(--drill-ink);
}

.tefila-lat {
    margin-top: 6px;
    font-size: 0.85rem;
    color: var(--drill-ink-faint);
    direction: ltr;
    text-align: left;
    letter-spacing: 0.03em;
}

.tefila-controls {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--drill-line);
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.rec-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 15px;
    border-radius: 999px;
    border: 1px solid rgba(248, 113, 113, 0.45);
    background: rgba(248, 113, 113, 0.14);
    color: #fca5a5;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.18s ease;
}

.rec-btn:hover { background: rgba(248, 113, 113, 0.26); transform: translateY(-2px); }
.rec-btn:focus-visible { outline: 2px solid #fca5a5; outline-offset: 2px; }
.rec-btn[data-state="recording"] { background: rgba(248, 113, 113, 0.4); color: #fff; }
.rec-btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }

.rec-dot {
    width: 9px; height: 9px; border-radius: 50%;
    background: #f87171; flex: 0 0 auto;
}

.rec-btn[data-state="recording"] .rec-dot { animation: recPulse 1s ease-in-out infinite; }

@keyframes recPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.35; transform: scale(1.35); }
}

.play-btn {
    padding: 9px 15px;
    border-radius: 999px;
    border: 1px solid rgba(52, 211, 153, 0.45);
    background: rgba(52, 211, 153, 0.14);
    color: #6ee7b7;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.18s ease;
}

.play-btn:hover:not(:disabled) { background: rgba(52, 211, 153, 0.26); transform: translateY(-2px); }
.play-btn:focus-visible { outline: 2px solid #6ee7b7; outline-offset: 2px; }
.play-btn:disabled,
.clear-btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

.clear-btn {
    padding: 9px 13px;
    border-radius: 999px;
    border: 1px solid var(--drill-line);
    background: transparent;
    color: var(--drill-ink-faint);
    font-family: inherit;
    font-size: 0.82rem;
    cursor: pointer;
}

.clear-btn:hover { color: var(--drill-ink); border-color: rgba(255, 255, 255, 0.3); }
.clear-btn:focus-visible { outline: 2px solid var(--drill-ink-soft); outline-offset: 2px; }

.rec-status {
    font-size: 0.8rem;
    color: var(--drill-ink-faint);
    margin-inline-start: auto;
}

.privacy-note {
    background: rgba(52, 211, 153, 0.08);
    border: 1px solid rgba(52, 211, 153, 0.28);
    border-radius: 16px;
    padding: 16px 20px;
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--drill-ink-soft);
}

.privacy-note strong { color: #6ee7b7; }

.mic-warning {
    background: rgba(251, 191, 36, 0.1);
    border: 1px solid rgba(251, 191, 36, 0.35);
    border-radius: 16px;
    padding: 16px 20px;
    font-size: 0.9rem;
    line-height: 1.7;
    color: #fde68a;
}