.md-wrap { max-width: 860px; margin: 0 auto; padding: 0 16px 80px; }
.md-hero { text-align: center; padding: 36px 0 10px; }
.md-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(34,197,94,.1); border: 1px solid rgba(34,197,94,.28); border-radius: 20px; padding: 5px 16px; font-size: .7rem; font-weight: 700; color: #22c55e; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 18px; }
.md-hero h1 { font-size: clamp(1.5rem, 4vw, 2.2rem); font-weight: 900; margin: 0 0 12px; letter-spacing: -.03em; line-height: 1.2; }
.md-hero h1 span { color: var(--accent); }
.md-hero p { color: var(--text-muted); font-size: .92rem; line-height: 1.75; max-width: 640px; margin: 0 auto; }

.md-progress { margin: 22px auto 6px; max-width: 640px; }
.md-progress-bar { height: 8px; border-radius: 6px; background: var(--bg-card2); border: 1px solid var(--border); overflow: hidden; }
.md-progress-fill { height: 100%; width: 0; background: linear-gradient(90deg, #22c55e, #84cc16); transition: width .4s ease; }
.md-progress-txt { font-size: .75rem; color: var(--text-muted); margin-top: 6px; text-align: center; }

/* Dizin kartları */
.md-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; margin-top: 24px; }
.md-card { position: relative; display: flex; gap: 14px; align-items: flex-start; background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 18px; text-decoration: none; transition: border-color .15s, transform .15s; min-width: 0; }
.md-card:hover { border-color: var(--md-c, var(--accent)); transform: translateY(-2px); }
.md-card-no { font-family: 'JetBrains Mono', monospace; font-size: .7rem; font-weight: 800; color: var(--md-c); letter-spacing: .08em; }
.md-card-ico { width: 46px; height: 46px; flex-shrink: 0; border-radius: 13px; display: flex; align-items: center; justify-content: center; font-size: 1.25rem; background: color-mix(in srgb, var(--md-c) 16%, transparent); color: var(--md-c); }
.md-card-title { font-size: .95rem; font-weight: 800; color: var(--text); line-height: 1.3; margin: 2px 0 6px; }
.md-card-ozet { font-size: .78rem; color: var(--text-muted); line-height: 1.55; }
.md-check { position: absolute; top: 12px; right: 12px; color: #22c55e; font-size: 1.1rem; display: none; }
.md-card.done .md-check { display: block; }

/* Ders sayfası */
.md-lesson-head { display: flex; align-items: center; gap: 14px; margin: 26px 0 8px; }
.md-lesson-head .md-card-ico { width: 56px; height: 56px; font-size: 1.5rem; border-radius: 16px; }
.md-lesson-head .md-card-no { margin-bottom: 2px; }
.md-lesson-head h1 { font-size: clamp(1.3rem, 3.4vw, 1.8rem); font-weight: 900; margin: 0; line-height: 1.2; letter-spacing: -.02em; }
.md-ozet { color: var(--text-muted); font-size: .9rem; line-height: 1.7; margin: 6px 0 18px; }

.md-section { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 22px 24px; margin-bottom: 14px; }
.md-section p { color: var(--text-muted); font-size: .9rem; line-height: 1.8; margin: 0 0 12px; }
.md-section p:last-child { margin-bottom: 0; }
.md-section strong { color: var(--text); }
.md-section a { color: var(--accent); font-weight: 700; }
.md-h { font-size: .8rem; font-weight: 800; color: var(--text); text-transform: uppercase; letter-spacing: .06em; margin: 0 0 12px; display: flex; align-items: center; gap: 8px; }
.md-h::before { content: ''; width: 3px; height: 14px; border-radius: 2px; background: var(--md-c, var(--accent)); }

.md-tip { display: flex; gap: 12px; align-items: flex-start; border-radius: 12px; padding: 14px 16px; margin: 0 0 14px; font-size: .85rem; line-height: 1.7; color: var(--text-muted); }
.md-tip i { font-size: 1.1rem; flex-shrink: 0; margin-top: 2px; }
.md-tip.mavi { background: rgba(96,165,250,.08); border: 1px solid rgba(96,165,250,.25); } .md-tip.mavi i { color: #60a5fa; }
.md-tip.yesil { background: rgba(34,197,94,.08); border: 1px solid rgba(34,197,94,.22); } .md-tip.yesil i { color: #22c55e; }
.md-tip.sari { background: rgba(245,158,11,.08); border: 1px solid rgba(245,158,11,.25); } .md-tip.sari i { color: #f59e0b; }
.md-tip.kirmizi { background: rgba(239,68,68,.08); border: 1px solid rgba(239,68,68,.25); } .md-tip.kirmizi i { color: #ef4444; }
.md-tip a { color: var(--accent); font-weight: 700; }

.md-table-wrap { overflow-x: auto; margin-bottom: 4px; }
.md-table { width: 100%; border-collapse: collapse; font-size: .82rem; }
.md-table th { text-align: left; padding: 8px 10px; font-size: .62rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--text-muted); border-bottom: 1px solid var(--border); }
.md-table td { padding: 9px 10px; border-bottom: 1px solid var(--border); color: var(--text-muted); line-height: 1.5; }
.md-table td:first-child { color: var(--text); font-weight: 800; font-family: 'JetBrains Mono', monospace; white-space: nowrap; }

/* Harf kartları — tıklanınca seslenir */
.md-harfler { display: grid; grid-template-columns: repeat(auto-fill, minmax(118px, 1fr)); gap: 10px; }
.md-harf { display: flex; flex-direction: column; align-items: center; gap: 6px; background: var(--bg-card2); border: 1px solid var(--border); border-radius: 14px; padding: 14px 8px; cursor: pointer; font: inherit; color: inherit; transition: transform .15s, border-color .15s, background .15s; }
.md-harf:hover { transform: translateY(-2px); border-color: var(--accent); }
.md-harf.calan { background: rgba(245,158,11,.14); border-color: var(--accent); }
.md-harf-ch { font-size: 1.5rem; font-weight: 900; color: var(--text); font-family: 'JetBrains Mono', monospace; }
.md-harf-kod { font-size: .8rem; font-family: 'JetBrains Mono', monospace; color: var(--accent); letter-spacing: 2px; }
.md-harf-kod .k-dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: currentColor; vertical-align: middle; margin: 0 2px; }
.md-harf-kod .k-dash { display: inline-block; width: 16px; height: 6px; border-radius: 3px; background: currentColor; vertical-align: middle; margin: 0 2px; }
.md-harf-ses { font-size: .66rem; color: var(--text-muted); }

/* Animasyonlu sinyal şeridi */
.md-anim { background: var(--bg-card2); border: 1px solid var(--border); border-radius: 14px; padding: 16px; margin-bottom: 12px; }
.md-anim-etiket { font-size: .8rem; font-weight: 700; color: var(--text); margin-bottom: 10px; }
.md-anim-sahne { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; min-height: 40px; margin-bottom: 12px; }
.md-sym { display: inline-block; background: var(--border); transition: background .08s, box-shadow .08s, transform .08s; }
.md-sym.nokta { width: 14px; height: 14px; border-radius: 50%; }
.md-sym.cizgi { width: 42px; height: 14px; border-radius: 7px; }
.md-sym.lit { background: #22c55e; box-shadow: 0 0 14px rgba(34,197,94,.7); transform: scale(1.08); }
.md-sym-bosluk { display: inline-block; width: 16px; }
.md-sym-kelime { display: inline-block; width: 30px; }
.md-btn { display: inline-flex; align-items: center; gap: 7px; background: var(--accent); color: #000; border: none; border-radius: 9px; padding: 9px 16px; font-weight: 800; font-size: .8rem; cursor: pointer; transition: opacity .15s; font-family: inherit; }
.md-btn:disabled { opacity: .5; cursor: default; }
.md-btn.ghost { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }

/* Hız kaydırıcısı */
.md-hiz { display: flex; align-items: center; gap: 10px; margin: 0 0 14px; flex-wrap: wrap; }
.md-hiz label { font-size: .75rem; color: var(--text-muted); font-weight: 700; }
.md-hiz input { width: 160px; }
.md-hiz span { font-family: 'JetBrains Mono', monospace; font-size: .8rem; color: var(--accent); min-width: 42px; }

/* Quiz */
.md-quiz-soru { background: var(--bg-card2); border: 1px solid var(--border); border-radius: 14px; padding: 16px; margin-bottom: 12px; }
.md-quiz-soru-baslik { font-size: .78rem; color: var(--text-muted); margin-bottom: 10px; font-weight: 700; }
.md-quiz-kod { font-family: 'JetBrains Mono', monospace; font-size: 1.1rem; color: var(--accent); letter-spacing: 3px; margin-bottom: 12px; word-break: break-all; min-height: 22px; display: flex; align-items: center; flex-wrap: wrap; }
.md-quiz-kod .k-dot, .md-quiz-kod .k-dash { display: inline-block; vertical-align: middle; background: currentColor; transition: background .08s, box-shadow .08s, transform .08s; }
.md-quiz-kod .k-dot { width: 10px; height: 10px; border-radius: 50%; margin: 0 4px; }
.md-quiz-kod .k-dash { width: 26px; height: 10px; border-radius: 5px; margin: 0 4px; }
/* Çalınan simge renkle yanar (animasyon kutularıyla aynı renk) */
.k-dot.lit, .k-dash.lit { background: #22c55e !important; box-shadow: 0 0 10px rgba(34,197,94,.8); transform: scale(1.15); }
.md-quiz-secenek { display: flex; flex-wrap: wrap; gap: 8px; }
.md-quiz-secenek button { background: var(--bg-card); border: 1px solid var(--border); color: var(--text); border-radius: 10px; padding: 10px 18px; font-weight: 800; font-size: .9rem; cursor: pointer; font-family: inherit; transition: all .15s; min-width: 58px; }
.md-quiz-secenek button:hover:not(:disabled) { border-color: var(--accent); }
.md-quiz-secenek button.dogru { background: rgba(34,197,94,.18); border-color: #22c55e; color: #22c55e; }
.md-quiz-secenek button.yanlis { background: rgba(239,68,68,.15); border-color: #ef4444; color: #ef4444; }
.md-quiz-geri { font-size: .75rem; margin-top: 8px; min-height: 16px; }
.md-quiz-geri.ok { color: #22c55e; } .md-quiz-geri.no { color: #ef4444; }

.md-nav { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-top: 22px; flex-wrap: wrap; }
.md-nav a { display: inline-flex; align-items: center; gap: 7px; color: var(--text-muted); text-decoration: none; font-size: .82rem; font-weight: 700; border: 1px solid var(--border); border-radius: 10px; padding: 9px 14px; background: var(--bg-card); }
.md-nav a:hover { color: var(--accent); border-color: var(--accent); }
.md-tamam-btn { display: inline-flex; align-items: center; gap: 8px; background: rgba(34,197,94,.12); color: #22c55e; border: 1px solid rgba(34,197,94,.35); border-radius: 10px; padding: 10px 16px; font-weight: 800; font-size: .82rem; cursor: pointer; font-family: inherit; }
.md-tamam-btn.tamam { background: #22c55e; color: #000; }

@media (max-width: 620px) {
    .md-section { padding: 18px 16px; }
    .md-harfler { grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); }
}