/* ==========================================================================
   Sufara – učna pot, mahredž diagram, kviz (abeceda.html)
   ========================================================================== */
.sf-wrap { max-width: var(--max-width); margin: 0 auto; padding: 0 1rem 3rem; }
.sf-hero { text-align: center; padding: 2.5rem 0 1.5rem; }
.sf-hero .section-title { margin-bottom: .6rem; }
.sf-hero-points { display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem 1.25rem; margin-top: 1rem; font-size: .88rem; color: var(--text-muted); list-style: none; }
.sf-hero-points li::before { content: '✓ '; color: var(--btn-primary); font-weight: 700; }

[lang="ar"] { font-family: var(--font-arabic) !important; }

/* Tabs */
.sf-tabs { display: flex; gap: .4rem; justify-content: center; flex-wrap: wrap; margin: 1.25rem auto 1.75rem; padding: .35rem; background: var(--bg-secondary); border: 1px solid var(--border-subtle); border-radius: var(--radius-full); width: fit-content; max-width: 100%; }
.sf-tab { border: 0; background: transparent; color: var(--text-muted); font: 600 .92rem var(--font-sans); padding: .6rem 1.15rem; border-radius: var(--radius-full); cursor: pointer; transition: var(--transition-fast); }
.sf-tab:hover { color: var(--text-primary); }
.sf-tab.is-active { background: var(--btn-primary); color: #fff; box-shadow: var(--shadow-green); }

/* Buttons */
.sf-btn { display: inline-flex; align-items: center; justify-content: center; gap: .45rem; border-radius: var(--radius-full); border: 1px solid transparent; font: 600 .92rem var(--font-sans); padding: .65rem 1.2rem; cursor: pointer; transition: var(--transition-fast); text-decoration: none; }
.sf-btn:disabled { opacity: .4; cursor: not-allowed; }
.sf-btn-sm { padding: .45rem .85rem; font-size: .83rem; }
.sf-btn-primary { background: var(--btn-primary); color: #fff; }
.sf-btn-primary:hover:not(:disabled) { background: var(--btn-primary-hover); }
.sf-btn-ghost { background: transparent; color: var(--text-secondary); border-color: var(--border-subtle); }
.sf-btn-ghost:hover:not(:disabled) { border-color: var(--btn-primary); color: var(--text-primary); }
.sf-btn-soft { background: rgba(46,185,106,.12); color: var(--btn-primary); border-color: var(--border-green); }
.sf-btn-soft:hover { background: rgba(46,185,106,.2); }
.is-playing { box-shadow: 0 0 0 3px rgba(250,204,21,.45) !important; }
.sf-btn.is-playing svg, .sf-big-play.is-playing svg { animation: sfPulse .8s ease-in-out infinite; }
@keyframes sfPulse { 50% { transform: scale(1.18); } }
button:focus-visible { outline: 2px solid var(--gold-400); outline-offset: 2px; }

/* Cards */
.sf-card { background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--radius-lg); padding: 1.4rem; box-shadow: var(--shadow-sm); }
.sf-card + .sf-card { margin-top: 1rem; }
.sf-h3 { font: 700 .95rem var(--font-sans); color: var(--text-heading); margin: 1.25rem 0 .6rem; letter-spacing: .01em; }
.sf-lead { color: var(--text-secondary); margin-bottom: 1rem; }
.sf-muted { color: var(--text-muted); font-size: .88rem; margin-bottom: .8rem; }
.sf-row-between { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.sf-row-center { display: flex; justify-content: center; gap: .75rem; flex-wrap: wrap; margin-top: 1.25rem; }
.sf-row-start { display: flex; gap: .5rem; flex-wrap: wrap; margin-top: 1rem; }

/* Progress + learning path */
.sf-progress { display: flex; align-items: center; gap: 1rem; margin-bottom: .9rem; font-size: .88rem; color: var(--text-muted); }
.sf-progress-track { flex: 1; height: 8px; background: var(--bg-secondary); border-radius: 99px; overflow: hidden; }
.sf-progress-track i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--btn-primary), var(--gold-400)); border-radius: 99px; transition: width .6s ease; }
.sf-path { display: grid; grid-template-columns: repeat(14, 1fr); gap: .45rem; direction: rtl; margin-bottom: 1.75rem; }
.sf-path-node { position: relative; aspect-ratio: 1; border-radius: 14px; border: 1px solid var(--border-subtle); background: var(--bg-card-subtle); color: var(--text-primary); cursor: pointer; display: grid; place-items: center; transition: var(--transition-fast); }
.sf-path-node:hover { border-color: var(--btn-primary); transform: translateY(-2px); }
.sf-path-char { font-size: 1.55rem; line-height: 1; }
.sf-path-num { position: absolute; top: 3px; left: 6px; font: 600 .62rem var(--font-sans); color: var(--text-muted); direction: ltr; }
.sf-path-node.is-done { background: rgba(46,185,106,.14); border-color: var(--border-green); }
.sf-path-node.is-done::after { content: '✓'; position: absolute; bottom: 2px; right: 5px; font-size: .65rem; color: var(--btn-primary); font-weight: 800; }
.sf-path-node.is-active { background: var(--btn-primary); border-color: var(--btn-primary); color: #fff; box-shadow: var(--shadow-green); }
.sf-path-node.is-active .sf-path-num { color: rgba(255,255,255,.8); }

/* Lesson */
.sf-lesson { scroll-margin-top: 90px; }
.sf-lesson-head { display: flex; align-items: center; gap: 1.5rem; margin-bottom: 1.25rem; }
.sf-lesson-letter { font-size: 5.5rem; line-height: 1; color: var(--gold-metallic); width: 120px; height: 120px; display: grid; place-items: center; background: radial-gradient(circle at 50% 40%, rgba(212,175,55,.16), transparent 70%); border: 1px solid var(--border-gold); border-radius: 28px; flex-shrink: 0; padding-bottom: .5rem; }
.sf-eyebrow { font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--btn-primary); }
.sf-lesson-title { font: 700 1.75rem var(--font-heading); color: var(--text-heading); margin: .15rem 0 .7rem; }
.sf-lesson-title span { color: var(--text-muted); font-weight: 600; font-size: 1.1rem; }

.sf-steps { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: .5rem; margin-bottom: 1.25rem; }
.sf-step { width: 100%; display: flex; align-items: center; gap: .55rem; padding: .7rem .8rem; border-radius: var(--radius-md); background: var(--bg-card-subtle); border: 1px solid var(--border-subtle); color: var(--text-muted); font: 600 .86rem var(--font-sans); cursor: pointer; text-align: left; }
.sf-step span { width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; background: var(--bg-hover); font-size: .78rem; flex-shrink: 0; }
.sf-step.is-past span { background: rgba(46,185,106,.25); color: var(--btn-primary); }
.sf-step.is-active { border-color: var(--btn-primary); color: var(--text-primary); background: rgba(46,185,106,.08); }
.sf-step.is-active span { background: var(--btn-primary); color: #fff; }
.sf-lesson-nav { display: flex; justify-content: space-between; margin-top: 1.5rem; gap: 1rem; }

.sf-intro-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 1rem; }
.sf-mk-card { display: flex; flex-direction: column; align-items: center; gap: .75rem; background: linear-gradient(180deg, #1b2532, var(--bg-card)); }
.sf-mk-small { width: 100%; max-width: 440px; }
.sf-forms { display: grid; grid-template-columns: repeat(4, 1fr); gap: .5rem; direction: rtl; }
.sf-form { background: var(--bg-card-subtle); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); text-align: center; padding: .5rem .25rem .45rem; }
.sf-form span { display: block; font-size: 2.1rem; line-height: 1.5; color: var(--text-heading); }
.sf-form small { font-size: .72rem; color: var(--text-muted); direction: ltr; display: block; }
.sf-compare-row { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }
.sf-compare { display: flex; flex-direction: column; align-items: center; min-width: 76px; padding: .35rem .7rem .45rem; background: var(--bg-card-subtle); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); color: var(--text-primary); cursor: pointer; }
.sf-compare span { font-size: 2rem; line-height: 1.4; }
.sf-compare small { font-size: .72rem; color: var(--text-muted); }
.sf-compare.is-self { border-color: var(--border-gold); }
.sf-compare:hover { border-color: var(--btn-primary); }
.sf-vs { color: var(--text-muted); font-size: .8rem; font-weight: 700; }

/* Makhraj info + diagram */
.mk-svg { width: 100%; height: auto; display: block; }
.mk-info-head { display: flex; gap: 1rem; align-items: center; }
.mk-info-char { font-size: 3rem; line-height: 1; color: var(--gold-metallic); }
.mk-zone { font-size: .78rem; font-weight: 700; color: var(--btn-primary); text-transform: uppercase; letter-spacing: .06em; }
.mk-zone span { text-transform: none; color: var(--text-muted); font-size: 1rem; margin-left: .25rem; }
.mk-title { font: 700 1.08rem var(--font-sans); color: var(--text-heading); margin-top: .15rem; }
.mk-desc { color: var(--text-secondary); margin: .8rem 0; font-size: .95rem; }
.mk-badges { display: flex; gap: .4rem; flex-wrap: wrap; }
.sf-badge { font-size: .74rem; font-weight: 600; padding: .22rem .6rem; border-radius: 99px; background: var(--bg-hover); color: var(--text-secondary); border: 1px solid var(--border-subtle); cursor: help; }
.sf-badge-debela { background: rgba(234,179,8,.14); color: var(--gold-400); border-color: var(--border-gold); }
.sf-badge-kalkala { background: rgba(239,68,68,.13); color: #fca5a5; border-color: rgba(239,68,68,.35); }
.sf-badge-gunna { background: rgba(125,211,252,.13); color: #7dd3fc; border-color: rgba(125,211,252,.35); }
.sf-badge-safir { background: rgba(167,139,250,.14); color: #c4b5fd; border-color: rgba(167,139,250,.35); }
.sf-badge-medd, .sf-badge-tanka { background: rgba(46,185,106,.12); color: #86efac; border-color: var(--border-green); }

.mk-air { opacity: 0; }
.mk-svg.is-flow .mk-air { animation: mkAir 2.6s ease-out 1 forwards; }
@keyframes mkAir { 0% { opacity: 0; stroke-dashoffset: 120; } 15% { opacity: .9; } 85% { opacity: .9; } 100% { opacity: 0; stroke-dashoffset: -40; } }
.mk-pulse { animation: mkPulse 1.6s ease-in-out infinite; transform-origin: center; transform-box: fill-box; }
@keyframes mkPulse { 50% { transform: scale(1.35); opacity: .65; } }
.mk-jawf, .mk-nasal-glow, .mk-point { transition: opacity .4s ease; }
.mk-labels line { stroke: #f8fafc; stroke-opacity: .45; stroke-width: .7; }
.mk-lbl-bg { fill: rgba(17,24,39,.82); }
.sf-mk-small .mk-labels { display: none; }
@media (prefers-reduced-motion: reduce) { .mk-pulse, .mk-svg.is-flow .mk-air { animation: none; } }

/* Harakat */
.sf-vowels { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; direction: rtl; }
.sf-vowel { background: var(--bg-card-subtle); border: 1px solid var(--border-subtle); border-radius: var(--radius-lg); padding: 1rem .5rem; cursor: pointer; color: var(--text-heading); display: flex; flex-direction: column; align-items: center; transition: var(--transition-fast); }
.sf-vowel:hover { border-color: var(--btn-primary); transform: translateY(-2px); }
.sf-vowel-ar { font-size: 3.6rem; line-height: 1.5; }
.sf-vowel-name { font-size: .82rem; color: var(--text-muted); direction: ltr; }
.sf-syl-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(78px, 1fr)); gap: .5rem; }
.sf-syl { background: var(--bg-card-subtle); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); cursor: pointer; color: var(--text-heading); padding: .25rem 0 .35rem; display: flex; flex-direction: column; align-items: center; }
.sf-syl span { font-size: 2.1rem; line-height: 1.5; }
.sf-syl small { font-size: .7rem; color: var(--text-muted); }
.sf-syl:hover { border-color: var(--btn-primary); }

/* Reading words */
.sf-known { font-size: 1.6rem; letter-spacing: .35rem; color: var(--gold-metallic); margin-bottom: .75rem; word-spacing: .3rem; }
.sf-toggle { display: inline-flex; align-items: center; gap: .45rem; font-size: .88rem; color: var(--text-secondary); cursor: pointer; }
.sf-toggle input { accent-color: var(--btn-primary); width: 16px; height: 16px; }
.sf-words { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: .9rem; margin-top: 1rem; }
.sf-word { position: relative; background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--radius-lg); padding: 1.1rem 1rem .9rem; text-align: center; display: flex; flex-direction: column; gap: .5rem; transition: var(--transition-fast); }
.sf-word:hover { border-color: var(--border-green); }
.sf-word.is-learned { border-color: var(--border-green); background: linear-gradient(180deg, rgba(46,185,106,.09), var(--bg-card)); }
.sf-word.is-learned::after { content: '✓'; position: absolute; top: .55rem; right: .75rem; color: var(--btn-primary); font-weight: 800; }
.sf-word-ar { font-size: 2.9rem; line-height: 1.6; color: var(--text-heading); }
.sf-tiles { display: flex; justify-content: center; gap: .3rem; flex-wrap: wrap; }
.sf-tiles[hidden], .sf-word-tr[hidden], .sf-self[hidden] { display: none; }
.sf-tile { display: flex; flex-direction: column; align-items: center; background: var(--bg-card-subtle); border: 1px solid var(--border-subtle); border-radius: 10px; padding: 0 .55rem .2rem; transition: all .2s; }
.sf-tile b { font-weight: 400; font-size: 1.7rem; line-height: 1.55; color: var(--text-primary); }
.sf-tile small { font-size: .7rem; color: var(--text-muted); }
.sf-tile.is-lit { background: rgba(250,204,21,.18); border-color: var(--gold-400); transform: translateY(-3px); }
.sf-tile.is-lit b { color: var(--gold-400); }
.sf-word-tr { font-size: .9rem; color: var(--gold-400); font-style: italic; }
.sf-word-actions { display: flex; justify-content: center; gap: .4rem; }
.sf-word-src { font-size: .72rem; color: var(--text-muted); }
.sf-tag { position: absolute; top: .55rem; left: .7rem; font-size: .66rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--text-muted); background: var(--bg-hover); border-radius: 99px; padding: .1rem .45rem; }
.sf-self { display: flex; align-items: center; justify-content: center; gap: .35rem; flex-wrap: wrap; font-size: .8rem; color: var(--text-muted); }
.sf-chip { border: 1px solid var(--border-subtle); background: transparent; color: var(--text-secondary); border-radius: 99px; padding: .2rem .6rem; font-size: .78rem; cursor: pointer; }
.sf-chip.is-yes:hover { border-color: var(--btn-primary); color: var(--btn-primary); }
.sf-empty { text-align: center; }

/* Quiz */
.sf-quiz { text-align: center; max-width: 640px; margin: 0 auto; }
.sf-quiz-top { display: flex; justify-content: space-between; font-size: .82rem; color: var(--text-muted); font-weight: 600; }
.sf-quiz-bar { height: 6px; background: var(--bg-secondary); border-radius: 99px; margin: .5rem 0 1.25rem; overflow: hidden; }
.sf-quiz-bar i { display: block; height: 100%; background: var(--btn-primary); transition: width .4s; }
.sf-q-text { font: 600 1.1rem var(--font-sans); color: var(--text-heading); margin-bottom: 1rem; }
.sf-q-letter { font-size: 5rem; line-height: 1.3; color: var(--gold-metallic); margin-bottom: .75rem; }
.sf-big-play { width: 84px; height: 84px; border-radius: 50%; border: 0; background: var(--btn-primary); color: #fff; cursor: pointer; display: grid; place-items: center; margin: 0 auto 1.25rem; box-shadow: var(--shadow-green); }
.sf-big-play svg { width: 34px; height: 34px; }
.sf-opts { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: .6rem; }
.sf-opt { background: var(--bg-card-subtle); border: 2px solid var(--border-subtle); border-radius: var(--radius-md); color: var(--text-heading); font: 600 1rem var(--font-sans); padding: .85rem .5rem; cursor: pointer; transition: var(--transition-fast); }
.sf-opt-ar { font-size: 2.3rem; padding: .2rem .5rem .5rem; line-height: 1.5; }
.sf-opt:hover { border-color: var(--btn-primary); }
.sf-opt.is-right { border-color: var(--btn-primary); background: rgba(46,185,106,.18); }
.sf-opt.is-wrong { border-color: #ef4444; background: rgba(239,68,68,.15); animation: sfShake .35s; }
@keyframes sfShake { 25% { transform: translateX(-5px); } 75% { transform: translateX(5px); } }
.sf-q-feedback { min-height: 1.6rem; margin-top: 1rem; font-weight: 700; }
.sf-q-feedback.ok { color: var(--btn-primary); }
.sf-q-feedback.bad { color: #fca5a5; }
.sf-quiz-end { text-align: center; }
.sf-quiz-emoji { font-size: 3.2rem; }
.sf-quiz-end h3 { font: 700 1.4rem var(--font-heading); color: var(--text-heading); margin: .4rem 0; }
.sf-quiz-end.is-pass { border-color: var(--border-green); }

/* Makhraj explorer */
.sf-mk-layout { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 1.25rem; align-items: start; }
.sf-mk-big-card { background: linear-gradient(180deg, #1b2532, var(--bg-card)); }
.sf-mk-group { margin-bottom: .9rem; }
.sf-mk-group-head { font-size: .85rem; color: var(--text-secondary); margin-bottom: .4rem; }
.sf-mk-group-head span { color: var(--text-muted); margin-left: .3rem; }
.sf-mk-group-btns { display: flex; flex-wrap: wrap; gap: .4rem; direction: rtl; }
.sf-mk-btn { width: 50px; height: 50px; border-radius: 12px; border: 1px solid var(--border-subtle); background: var(--bg-card-subtle); color: var(--text-heading); font-size: 1.6rem; cursor: pointer; padding-bottom: .3rem; }
.sf-mk-btn:hover { border-color: var(--btn-primary); }
.sf-mk-btn.is-active { background: var(--btn-primary); border-color: var(--btn-primary); color: #fff; }
#sf-mk-info { margin-top: 1rem; }

/* Alphabet grid */
.sf-alpha { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: .7rem; direction: rtl; }
.sf-alpha-card { background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--radius-lg); padding: .6rem .5rem .8rem; display: flex; flex-direction: column; align-items: center; cursor: pointer; color: var(--text-heading); transition: var(--transition-fast); }
.sf-alpha-card:hover { border-color: var(--btn-primary); transform: translateY(-2px); }
.sf-alpha-card.is-done { border-color: var(--border-green); }
.sf-alpha-ar { font-size: 3rem; line-height: 1.5; color: var(--gold-metallic); }
.sf-alpha-name { font: 600 .9rem var(--font-sans); direction: ltr; }
.sf-alpha-forms { font-size: 1.25rem; color: var(--text-muted); margin-top: .1rem; }

/* SEO / info content */
.sf-info { margin-top: 3.5rem; display: grid; gap: 1.25rem; }
.sf-info h2 { font: 700 1.5rem var(--font-heading); color: var(--text-heading); margin-bottom: .6rem; }
.sf-info p, .sf-info li { color: var(--text-secondary); }
.sf-info ol, .sf-info ul { padding-left: 1.25rem; display: grid; gap: .35rem; }
.sf-info details { background: var(--bg-card-subtle); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); padding: .8rem 1rem; }
.sf-info details + details { margin-top: .5rem; }
.sf-info summary { cursor: pointer; font-weight: 600; color: var(--text-heading); }
.sf-info details p { margin-top: .5rem; }
.sf-table-wrap { overflow-x: auto; border-radius: var(--radius-md); border: 1px solid var(--border-subtle); }
.sf-table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.sf-table caption { text-align: left; padding: .75rem 1rem; color: var(--text-muted); font-size: .82rem; }
.sf-table th, .sf-table td { padding: .5rem .75rem; border-top: 1px solid var(--border-subtle); text-align: left; color: var(--text-secondary); vertical-align: middle; }
.sf-table th { color: var(--text-heading); background: var(--bg-secondary); }
.sf-table a { color: var(--btn-primary); }
.sf-tbl-ar { font-size: 1.7rem; color: var(--gold-metallic) !important; text-align: center !important; }
.sf-credits { font-size: .8rem; color: var(--text-muted); }

/* Responsive */
@media (max-width: 900px) {
  .sf-intro-grid, .sf-mk-layout { grid-template-columns: 1fr; }
  .sf-path { grid-template-columns: repeat(7, 1fr); }
}
@media (max-width: 600px) {
  .sf-steps { grid-template-columns: repeat(2, 1fr); }
  .sf-lesson-head { gap: 1rem; }
  .sf-lesson-letter { width: 88px; height: 88px; font-size: 4rem; border-radius: 20px; }
  .sf-lesson-title { font-size: 1.35rem; }
  .sf-forms { grid-template-columns: repeat(2, 1fr); }
  .sf-tab { padding: .55rem .8rem; font-size: .85rem; }
  .sf-card { padding: 1.1rem; }
  .sf-table th:nth-child(6), .sf-table td:nth-child(6) { display: none; }
}

/* overflow guards */
.sf-path-node, .sf-step, .sf-form, .sf-word, .sf-opt { min-width: 0; }
.sf-wrap { overflow-wrap: anywhere; width: 100%; min-width: 0; box-sizing: border-box; }  /* body is a centred flex column: pin to screen width so wide rows scroll instead of widening the page */
@media (max-width: 600px) {
  .sf-path { gap: .3rem; }
  .sf-path-node { border-radius: 10px; }
  .sf-path-char { font-size: 1.2rem; }
  .sf-path-num { font-size: .55rem; left: 4px; }
  .sf-tabs { width: 100%; justify-content: space-between; }
  .sf-hero .section-title { font-size: 1.7rem; }
}

/* Word trainer (flashcards) */
.sf-hl { color: var(--gold-400); }
.sf-known .sf-hl { text-shadow: 0 0 12px rgba(250,204,21,.45); }
.sf-seg { display: inline-flex; flex-wrap: wrap; gap: .3rem; background: var(--bg-secondary); border: 1px solid var(--border-subtle); border-radius: 99px; padding: .25rem; }
.sf-seg button { border: 0; background: transparent; color: var(--text-muted); font: 600 .85rem var(--font-sans); padding: .45rem .9rem; border-radius: 99px; cursor: pointer; }
.sf-seg button.is-active { background: var(--btn-primary); color: #fff; }
.sf-seg button:disabled { opacity: .35; cursor: not-allowed; }
/* Read-mode switch (Nove besede / Ponovitev / Vse): one row, swipe horizontally when it doesn't fit */
.sf-seg-scroll { display: flex; flex-wrap: nowrap; width: max-content; max-width: 100%; overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; overscroll-behavior-x: contain; scroll-snap-type: x proximity; scrollbar-width: none; }
.sf-seg-scroll::-webkit-scrollbar { display: none; }
.sf-seg-scroll button { flex: 0 0 auto; white-space: nowrap; scroll-snap-align: start; }
.sf-trainer { max-width: 760px; margin: 1rem auto 0; }
.sf-tr-top { display: flex; justify-content: space-between; align-items: center; gap: .75rem; flex-wrap: wrap; font-size: .88rem; color: var(--text-muted); margin-bottom: .6rem; }
.sf-tr-count b { color: var(--text-heading); }
.sf-tr-done { color: var(--btn-primary); font-weight: 600; }
.sf-tr-card { position: relative; background: radial-gradient(120% 90% at 50% 0%, #2f4058, var(--bg-card)); border: 1px solid var(--border-card); border-radius: 24px; padding: 2rem 1rem 1.25rem; text-align: center; min-height: 260px; display: flex; flex-direction: column; justify-content: center; gap: .8rem; box-shadow: var(--shadow-card); }
.sf-tr-card.is-learned { border-color: var(--border-green); }
.sf-tr-card.is-learned::after { content: '✓ prebrano'; position: absolute; top: .8rem; right: 1rem; font-size: .75rem; font-weight: 700; color: var(--btn-primary); }
.sf-tr-word { font-size: clamp(4rem, 13vw, 6.5rem); line-height: 1.45; color: var(--text-heading); }
.sf-tr-ctrl { display: flex; align-items: center; justify-content: center; gap: .6rem; margin-top: 1rem; flex-wrap: wrap; }
.sf-btn-lg { padding: .85rem 1.5rem; font-size: 1rem; }
.sf-round { width: 52px; height: 52px; border-radius: 50%; border: 1px solid var(--border-subtle); background: var(--bg-card); color: var(--text-heading); font-size: 1.8rem; line-height: 1; cursor: pointer; display: grid; place-items: center; padding-bottom: .2rem; }
.sf-round:hover:not(:disabled) { border-color: var(--btn-primary); color: var(--btn-primary); }
.sf-round:disabled { opacity: .3; cursor: not-allowed; }
.sf-tr-grade { display: flex; justify-content: center; gap: .5rem; margin-top: .8rem; flex-wrap: wrap; }
.sf-tr-grade .sf-chip { padding: .45rem .95rem; font-size: .86rem; }
.sf-tr-list { display: flex; flex-wrap: wrap; gap: .35rem; justify-content: center; margin-top: 1.25rem; }
.sf-tr-pill { border: 1px solid var(--border-subtle); background: var(--bg-card-subtle); color: var(--text-secondary); border-radius: 10px; font-size: 1.25rem; padding: 0 .6rem .2rem; cursor: pointer; }
.sf-tr-pill.is-ok { border-color: var(--border-green); color: #86efac; }
.sf-tr-pill.is-cur { background: var(--btn-primary); border-color: var(--btn-primary); color: #fff; }
.sf-tr-help { text-align: center; font-size: .78rem; color: var(--text-muted); margin-top: .8rem; }
.sf-tile b { font-size: 2rem; }

/* Vadnica letter picker */
.sf-psel { display: grid; grid-template-columns: repeat(14, 1fr); gap: .35rem; margin-top: .9rem; }
.sf-psel-btn { aspect-ratio: 1; min-width: 0; border-radius: 10px; border: 1px solid var(--border-subtle); background: var(--bg-card-subtle); color: var(--text-muted); font-size: 1.45rem; cursor: pointer; padding-bottom: .25rem; }
.sf-psel-btn.is-on { background: rgba(46,185,106,.18); border-color: var(--btn-primary); color: var(--text-heading); }
@media (max-width: 700px) { .sf-psel { grid-template-columns: repeat(7, 1fr); } .sf-tr-ctrl .sf-btn-lg { order: -1; width: 100%; } }

/* diagram */
.mk-lens-cap { letter-spacing: .08em; text-transform: uppercase; }
.sf-order { display: flex; align-items: center; justify-content: center; gap: .75rem; flex-wrap: wrap; margin-bottom: 1rem; font-size: .86rem; color: var(--text-muted); }
.sf-vowel span[lang="ar"] { font-size: 3.6rem; line-height: 1.5; }
.sf-vowel small { font-size: .8rem; color: var(--text-muted); text-align: center; direction: ltr; }
.sf-vowel small b, .sf-syl small b { font-weight: 400; font-size: 1.1rem; color: var(--gold-400); }
.sf-syl small { direction: ltr; }
.sf-syl:not(.is-silent)::after { content: '🔊'; font-size: .6rem; opacity: .6; }
.is-silent { opacity: .55; cursor: default !important; }
.sf-syl-grid { grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); }
@media (max-width: 600px) {
  /* Category tabs: one row, swipe horizontally on phones */
  .sf-tabs { display: flex; flex-wrap: nowrap; justify-content: flex-start; width: 100%; gap: .25rem; overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; overscroll-behavior-x: contain; scroll-snap-type: x proximity; scrollbar-width: none; }
  .sf-tabs::-webkit-scrollbar { display: none; }
  .sf-tab { flex: 0 0 auto; white-space: nowrap; scroll-snap-align: start; }
  .sf-tab:first-child { margin-left: auto; }  /* centred when it fits, scrollable when it doesn't */
  .sf-tab:last-child { margin-right: auto; }
  .sf-order .sf-seg { display: grid; grid-template-columns: 1fr 1fr; border-radius: 16px; width: 100%; }
  .sf-order .sf-seg button { border-radius: 12px; font-size: .78rem; padding: .5rem .4rem; }
}