/* ============================================================
   DersTeders - Ozel Ders Notlari / OzET + PDF-Yazdir SistemI
   Marka paletiyle uyumlu, defter/sari not kagidi hissi veren
   ozel ders notu bilesenleri ve yazdirma stilleri.
   ============================================================ */

:root {
  --dn-amber: #F59E0B;
  --dn-amber-soft: color-mix(in srgb, #F59E0B 12%, transparent);
  --dn-amber-line: color-mix(in srgb, #F59E0B 35%, transparent);
  --dn-paper: #FFFDF5;
  --dn-paper-dark: #1E1B14;
  --dn-ink: #1F2937;
}

[data-theme="dark"] {
  --dn-paper: #211D15;
  --dn-ink: #F1F5F9;
}

/* ---------- Arac cubugu (Yazdir / PDF / Notlar) ---------- */
.dn-toolbar {
  position: sticky;
  top: 64px;
  z-index: 90;
  background: color-mix(in srgb, var(--bg, #fff) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border, #E2E8F0);
  padding: 10px 0;
}

.dn-toolbar-inner {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.dn-tb-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: .92rem;
  color: var(--text, #0F172A);
  margin-right: auto;
}

.dn-tb-title .ui-icon { color: var(--primary, #8B5CF6); }

.dn-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border: 1px solid var(--border, #E2E8F0);
  border-radius: var(--radius-sm, 8px);
  background: var(--bg, #fff);
  color: var(--text, #0F172A);
  font-family: inherit;
  font-size: .86rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .18s ease;
  white-space: nowrap;
}

.dn-btn .ui-icon { width: 18px; height: 18px; }

.dn-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md, 0 4px 6px rgba(0,0,0,.07));
  border-color: var(--primary, #8B5CF6);
  color: var(--primary, #8B5CF6);
}

.dn-btn-primary {
  background: color-mix(in srgb, var(--primary, #8B5CF6) 55%, #06181D);
  border-color: color-mix(in srgb, var(--primary, #8B5CF6) 55%, #06181D);
  color: #fff;
}

.dn-btn-primary:hover {
  background: color-mix(in srgb, var(--primary, #8B5CF6) 42%, #06181D);
  border-color: color-mix(in srgb, var(--primary, #8B5CF6) 42%, #06181D);
  color: #fff;
}

.dn-btn-amber {
  background: #B45309;
  border-color: #B45309;
  color: #fff;
}

.dn-btn-amber:hover {
  background: #92400E;
  border-color: #92400E;
  color: #fff;
}

.dn-btn[disabled] { opacity: .55; cursor: wait; }

/* ---------- Sinav stratejileri bolumu ---------- */
.dn-strategy {
  margin: 0 0 8px;
}

.dn-strategy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.dn-strategy-card {
  background: var(--bg, #fff);
  border: 1px solid var(--border, #E2E8F0);
  border-radius: var(--radius, 12px);
  padding: 20px;
  box-shadow: var(--shadow, 0 1px 3px rgba(0,0,0,.08));
  position: relative;
  overflow: hidden;
}

.dn-strategy-card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: var(--primary, #8B5CF6);
}

.dn-strategy-card.dn-c-amber::before { background: var(--dn-amber); }
.dn-strategy-card.dn-c-green::before { background: #16A34A; }

.dn-strategy-card h4 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .98rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text, #0F172A);
}

.dn-strategy-card h4 .ui-icon { color: var(--primary, #8B5CF6); }
.dn-strategy-card.dn-c-amber h4 .ui-icon { color: var(--dn-amber); }
.dn-strategy-card.dn-c-green h4 .ui-icon { color: #16A34A; }

.dn-strategy-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.dn-strategy-card li {
  position: relative;
  padding: 6px 0 6px 20px;
  font-size: .88rem;
  color: var(--text-secondary, #475569);
  line-height: 1.5;
}

.dn-strategy-card li::before {
  content: '\2714';
  position: absolute;
  left: 0;
  top: 6px;
  color: var(--primary, #8B5CF6);
  font-weight: 700;
  font-size: .78rem;
}

.dn-strategy-card.dn-c-amber li::before { color: var(--dn-amber); content: '\2605'; }
.dn-strategy-card.dn-c-green li::before { color: #16A34A; }

.dn-habit-banner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  border-radius: var(--radius, 12px);
  background: linear-gradient(135deg, var(--dn-amber-soft), transparent);
  border: 1px dashed var(--dn-amber-line);
  margin-bottom: 8px;
}

.dn-habit-banner .ui-icon {
  width: 34px;
  height: 34px;
  color: var(--dn-amber);
  flex-shrink: 0;
}

.dn-habit-banner b { color: var(--text, #0F172A); }
.dn-habit-banner p { font-size: .9rem; color: var(--text-secondary, #475569); margin: 0; }
.dn-habit-banner .dn-habit-steps {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 6px;
}
.dn-habit-banner .dn-habit-steps span {
  font-size: .82rem;
  color: var(--text-muted, #94A3B8);
}

/* ---------- Ozel ders notu karti ---------- */
.ders-notu {
  position: relative;
  margin: 18px 0 22px;
  border-radius: var(--radius, 12px);
  background:
    linear-gradient(var(--dn-paper), var(--dn-paper)),
    repeating-linear-gradient(transparent, transparent 27px, var(--dn-amber-line) 27px, var(--dn-amber-line) 28px);
  border: 1px solid var(--dn-amber-line);
  border-left: 5px solid var(--dn-amber);
  box-shadow: var(--shadow, 0 1px 3px rgba(0,0,0,.08));
  overflow: hidden;
}

.dn-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  background: var(--dn-amber-soft);
  border-bottom: 1px dashed var(--dn-amber-line);
}

.dn-head .ui-icon { width: 22px; height: 22px; color: var(--dn-amber); }

.dn-head h4 {
  font-size: .98rem;
  font-weight: 800;
  letter-spacing: .01em;
  color: var(--text, #0F172A);
  margin: 0;
}

.dn-head .dn-badge {
  margin-left: auto;
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: #B45309;
  background: var(--bg, #fff);
  border: 1px solid var(--dn-amber-line);
  padding: 3px 10px;
  border-radius: 20px;
}

[data-theme="dark"] .dn-head .dn-badge {
  color: #FBBF24;
}

.dn-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  padding: 18px 20px;
}

.dn-block {
  background: var(--bg, #fff);
  border: 1px solid var(--border, #E2E8F0);
  border-radius: var(--radius-sm, 8px);
  padding: 14px 16px;
}

.dn-block.dn-full { grid-column: 1 / -1; }

.dn-block h5 {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: .85rem;
  font-weight: 700;
  color: var(--text, #0F172A);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: .03em;
}

.dn-block h5 .ui-icon { width: 17px; height: 17px; color: var(--primary, #8B5CF6); }

.dn-block.dn-b-tips h5 .ui-icon { color: var(--dn-amber); }
.dn-block.dn-b-mistakes h5 .ui-icon { color: #DC2626; }
.dn-block.dn-b-summary h5 .ui-icon { color: #16A34A; }

.dn-block ul, .dn-block ol {
  margin: 0 0 0 0;
  padding-left: 20px;
}

.dn-block li {
  font-size: .87rem;
  color: var(--text-secondary, #475569);
  margin-bottom: 6px;
  line-height: 1.5;
}

.dn-block li:last-child { margin-bottom: 0; }

.dn-block.dn-b-five { counter-reset: dn-five; }
.dn-block.dn-b-five ol { list-style: none; padding-left: 0; }
.dn-block.dn-b-five li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 8px;
}
.dn-block.dn-b-five li::before {
  counter-increment: dn-five;
  content: counter(dn-five);
  position: absolute;
  left: 0;
  top: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--primary, #8B5CF6) 60%, #06181D);
  color: #fff;
  font-size: .72rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.dn-block .dn-formula-line {
  font-family: 'JetBrains Mono', monospace;
  font-size: .9rem;
  background: var(--surface, #F1F5F9);
  border-radius: 6px;
  padding: 7px 10px;
  margin-bottom: 6px;
  display: block;
  overflow-x: auto;
  color: var(--text, #0F172A);
}

.dn-block .formula-box { margin: 0; }
.dn-block .formula-box .f-row { font-size: .86rem; }

.dn-empty {
  font-size: .82rem;
  color: var(--text-muted, #94A3B8);
  font-style: italic;
}

/* ---------- Kisisel not ---------- */
.dn-personal {
  border-top: 1px dashed var(--dn-amber-line);
  padding: 16px 20px 18px;
  background: color-mix(in srgb, var(--dn-amber) 4%, transparent);
}

.dn-personal label {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: .85rem;
  font-weight: 700;
  color: var(--text, #0F172A);
  margin-bottom: 8px;
}

.dn-personal label .ui-icon { width: 17px; height: 17px; color: var(--dn-amber); }

.dn-personal textarea {
  width: 100%;
  min-height: 74px;
  resize: vertical;
  font-family: inherit;
  font-size: .88rem;
  line-height: 1.55;
  color: var(--text, #0F172A);
  background: var(--bg, #fff);
  border: 1px solid var(--border, #E2E8F0);
  border-radius: var(--radius-sm, 8px);
  padding: 10px 12px;
}

.dn-personal textarea:focus {
  outline: none;
  border-color: var(--dn-amber);
  box-shadow: 0 0 0 3px var(--dn-amber-soft);
}

.dn-personal-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.dn-save {
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius-sm, 8px);
  background: #B45309;
  color: #fff;
  font-family: inherit;
  font-size: .84rem;
  font-weight: 700;
  cursor: pointer;
  transition: background .18s ease;
}

.dn-save:hover { background: #92400E; }

.dn-clear {
  padding: 8px 14px;
  border: 1px solid var(--border, #E2E8F0);
  border-radius: var(--radius-sm, 8px);
  background: transparent;
  color: var(--text-muted, #94A3B8);
  font-family: inherit;
  font-size: .84rem;
  font-weight: 600;
  cursor: pointer;
}

.dn-clear:hover { color: #DC2626; border-color: #DC2626; }

.dn-status {
  font-size: .8rem;
  font-weight: 600;
  color: #16A34A;
  opacity: 0;
  transition: opacity .25s ease;
}

.dn-status.show { opacity: 1; }

.dn-saved-note { display: none; }

/* ---------- Bildirim (toast) ---------- */
.dn-toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%) translateY(20px);
  z-index: 9999;
  background: var(--text, #0F172A);
  color: var(--bg, #fff);
  padding: 12px 22px;
  border-radius: 10px;
  font-size: .88rem;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
  opacity: 0;
  pointer-events: none;
  transition: all .3s ease;
  max-width: 90vw;
  text-align: center;
}

.dn-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Yazdirma basligi (ekranda gizli) ---------- */
#dn-print-header { display: none; }

.dn-print-only { display: none; }

/* ---------- Notlarim penceresi ---------- */
.dn-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(15, 23, 42, .55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: dnFade .2s ease;
}

@keyframes dnFade { from { opacity: 0; } to { opacity: 1; } }

.dn-modal {
  width: 100%;
  max-width: 560px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  background: var(--bg, #fff);
  border: 1px solid var(--border, #E2E8F0);
  border-radius: var(--radius, 12px);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .3);
  animation: dnRise .25s ease;
}

@keyframes dnRise { from { transform: translateY(18px); opacity: 0; } to { transform: none; opacity: 1; } }

.dn-modal-head {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border, #E2E8F0);
  background: var(--dn-amber-soft);
}

.dn-modal-head .ui-icon { color: var(--dn-amber); width: 20px; height: 20px; }
.dn-modal-head strong { font-size: .95rem; color: var(--text, #0F172A); }

.dn-modal-close {
  margin-left: auto;
  width: 32px;
  height: 32px;
  border: 1px solid var(--border, #E2E8F0);
  border-radius: 8px;
  background: transparent;
  color: var(--text-secondary, #475569);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
}

.dn-modal-close:hover { color: #DC2626; border-color: #DC2626; }

.dn-modal-body { padding: 16px 18px; overflow-y: auto; }

.dn-note-item {
  border: 1px solid var(--border, #E2E8F0);
  border-left: 4px solid var(--dn-amber);
  border-radius: var(--radius-sm, 8px);
  padding: 12px 14px;
  margin-bottom: 12px;
  background: var(--bg, #fff);
}

.dn-note-item:last-child { margin-bottom: 0; }

.dn-note-title { font-size: .88rem; font-weight: 700; color: var(--text, #0F172A); margin-bottom: 4px; }

.dn-note-text {
  font-size: .85rem;
  color: var(--text-secondary, #475569);
  white-space: pre-wrap;
  margin-bottom: 10px;
}

.dn-note-actions { display: flex; gap: 8px; }

/* ---------- Duyarli ---------- */
@media (max-width: 768px) {
  .dn-strategy-grid { grid-template-columns: 1fr; }
  .dn-grid { grid-template-columns: 1fr; padding: 14px; }
  .dn-tb-title { width: 100%; }
  .dn-btn { flex: 1; justify-content: center; }
  .dn-toolbar { top: 56px; }
  .dn-habit-banner { flex-direction: column; align-items: flex-start; }
}

/* ============================================================
   DERS ORTAK ARAYUZ (ders-ortak.js tarafindan enjekte edilir)
   ------------------------------------------------------------
   - ds-studybar : sticky arama + genel ilerleme + ac/kapat
   - ds-hit      : arama vurgusu
   - ds-unit-prog: unit bazli ilerleme cubugu
   - ds-toc      : sol sabit icerik dizini (genis ekran)
   - ds-floatnav : "Uniteye Don / Siradaki Unite" sabit butonlar
   ============================================================ */

.ds-page {
  --ds-bar-h: 64px;
}

/* ---------- Sticky arama / ilerleme cubugu ---------- */
.ds-studybar {
  position: sticky;
  top: 64px;
  z-index: 92;
  background: color-mix(in srgb, var(--bg, #fff) 86%, transparent);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid var(--border, #E2E8F0);
  box-shadow: 0 10px 30px -18px rgba(10, 60, 72, .35);
  padding: 10px 0;
}

.ds-sb-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* Arama kutusu */
.ds-search {
  position: relative;
  flex: 1 1 260px;
  min-width: 220px;
  display: flex;
  align-items: center;
}

.ds-search .ds-search-icon {
  position: absolute;
  left: 12px;
  width: 17px;
  height: 17px;
  color: var(--text-muted, #94A3B8);
  pointer-events: none;
  display: flex;
}

.ds-search input {
  width: 100%;
  padding: 10px 38px;
  font-family: inherit;
  font-size: .9rem;
  color: var(--text, #0F172A);
  background: var(--bg, #fff);
  border: 1.5px solid var(--border, #E2E8F0);
  border-radius: 12px;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.ds-search input::placeholder { color: var(--text-muted, #94A3B8); }

.ds-search input:focus {
  outline: none;
  border-color: var(--primary, #0F6B7C);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary, #0F6B7C) 18%, transparent);
}

.ds-search-clear {
  position: absolute;
  right: 8px;
  width: 26px;
  height: 26px;
  border: none;
  border-radius: 50%;
  background: var(--surface, #F1F5F9);
  color: var(--text-secondary, #475569);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
}

.ds-search-clear.show { display: inline-flex; }
.ds-search-clear:hover { color: #DC2626; }

/* Genel ilerleme */
.ds-progress {
  flex: 1 1 200px;
  min-width: 180px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.ds-progress-label {
  font-size: .78rem;
  font-weight: 700;
  color: var(--text-secondary, #475569);
  white-space: nowrap;
}

.ds-progress-track {
  position: relative;
  flex: 1;
  height: 10px;
  border-radius: 999px;
  background: var(--surface, #F1F5F9);
  border: 1px solid var(--border, #E2E8F0);
  overflow: hidden;
}

.ds-progress-fill {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary, #0F6B7C), #C5923E);
  box-shadow: 0 0 10px color-mix(in srgb, var(--primary, #0F6B7C) 55%, transparent);
  transition: width .5s cubic-bezier(.2, .8, .2, 1);
}

.ds-progress-pct {
  font-size: .8rem;
  font-weight: 800;
  color: var(--primary-text, #0F6B7C);
  min-width: 38px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* Ac / Kapat butonlari + sonuc yazisi */
.ds-sb-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ds-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 14px;
  border: 1px solid var(--border, #E2E8F0);
  border-radius: 10px;
  background: var(--bg, #fff);
  color: var(--text, #0F172A);
  font-family: inherit;
  font-size: .82rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: all .18s ease;
}

.ds-btn:hover {
  transform: translateY(-1px);
  border-color: var(--primary, #0F6B7C);
  color: var(--primary-text, #0F6B7C);
  box-shadow: 0 6px 16px -8px color-mix(in srgb, var(--primary, #0F6B7C) 60%, transparent);
}

.ds-sb-status {
  font-size: .78rem;
  font-weight: 600;
  color: var(--text-muted, #94A3B8);
  white-space: nowrap;
}

/* Arama sonucu yoksa hos mesaj */
.ds-empty {
  display: none;
  margin: 0 0 18px;
  padding: 26px 22px;
  text-align: center;
  border: 1px dashed color-mix(in srgb, var(--primary, #0F6B7C) 40%, transparent);
  border-radius: var(--radius, 12px);
  background: color-mix(in srgb, var(--primary, #0F6B7C) 6%, transparent);
}

.ds-empty.show { display: block; }

.ds-empty b {
  display: block;
  font-size: .98rem;
  color: var(--text, #0F172A);
  margin-bottom: 4px;
}

.ds-empty span {
  font-size: .86rem;
  color: var(--text-secondary, #475569);
}

/* Arama vurgusu */
.ds-hit {
  background: linear-gradient(135deg, rgba(245, 197, 66, .55), rgba(245, 197, 66, .28));
  color: inherit;
  border-radius: 4px;
  padding: 0 3px;
  box-shadow: 0 0 0 1px rgba(245, 197, 66, .45);
}

/* Eslesmeyen konu / unite gizle */
.topic-card.ds-nomatch,
.unit-item.ds-nomatch { display: none; }

/* ---------- Unite bazli ilerleme ---------- */
.ds-unit-prog {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  min-width: 120px;
  flex-shrink: 0;
}

.ds-up-track {
  flex: 1;
  height: 7px;
  min-width: 60px;
  max-width: 110px;
  border-radius: 999px;
  background: var(--surface, #F1F5F9);
  border: 1px solid var(--border, #E2E8F0);
  overflow: hidden;
}

.ds-up-fill {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary, #0F6B7C), color-mix(in srgb, var(--primary, #0F6B7C) 60%, #C5923E));
  transition: width .45s cubic-bezier(.2, .8, .2, 1);
}

.ds-unit-prog.done .ds-up-fill {
  background: linear-gradient(90deg, #16A34A, #4ADE80);
  box-shadow: 0 0 8px rgba(74, 222, 128, .55);
}

.ds-up-num {
  font-size: .72rem;
  font-weight: 800;
  color: var(--text-muted, #94A3B8);
  min-width: 34px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.ds-unit-prog.done .ds-up-num { color: #16A34A; }

/* Unite basliginda ilerleme rozeti chev'den once gelir; chev sagda kalsin */
.ds-unit-prog + .chev { margin-left: 8px; }

/* ---------- Sol sabit icerik dizini (genis ekran) ---------- */
.ds-toc {
  position: fixed;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  /* Yapisan ders sekme cubugu (.ders-tabs, z-95) siyah seridi kutunun
     USTUNDEN gecmesin: kutu seridin ustunde kalir (header=100 altinda). */
  z-index: 97;
  display: none;
  flex-direction: column;
  gap: 4px;
  max-width: 190px;
  padding: 12px 10px;
  border-radius: 14px;
  background: color-mix(in srgb, var(--bg, #fff) 88%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border, #E2E8F0);
  box-shadow: var(--shadow, 0 8px 30px -14px rgba(10, 60, 72, .35));
}

.ds-toc-title {
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-muted, #94A3B8);
  padding: 2px 8px 6px;
}

.ds-toc a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 8px;
  font-size: .78rem;
  font-weight: 600;
  color: var(--text-secondary, #475569);
  text-decoration: none;
  line-height: 1.3;
  transition: background .18s ease, color .18s ease;
}

.ds-toc a:hover {
  background: color-mix(in srgb, var(--primary, #0F6B7C) 10%, transparent);
  color: var(--primary-text, #0F6B7C);
  text-decoration: none;
}

.ds-toc a.active {
  background: color-mix(in srgb, var(--primary, #0F6B7C) 14%, transparent);
  color: var(--primary-text, #0F6B7C);
  box-shadow: inset 2px 0 0 var(--primary, #0F6B7C);
}

.ds-toc a .ds-toc-n {
  font-weight: 800;
  font-size: .72rem;
  color: var(--primary-text, #0F6B7C);
  min-width: 18px;
}

.ds-toc a .ds-toc-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (min-width: 1360px) {
  .ds-toc { display: flex; }
}

/* ---------- Sabit unite navigasyon butonlari ---------- */
.ds-floatnav {
  position: fixed;
  /* st-fab (56px, right:20) ile cakismasin diye solunda dur */
  right: 88px;
  bottom: 18px;
  z-index: 95;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ds-fnav-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 16px;
  border-radius: 12px;
  font-family: inherit;
  font-size: .8rem;
  font-weight: 700;
  cursor: pointer;
  color: var(--text, #0F172A);
  background: color-mix(in srgb, var(--bg, #fff) 90%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border, #E2E8F0);
  box-shadow: 0 10px 28px -14px rgba(10, 60, 72, .45);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, opacity .2s ease;
}

.ds-fnav-btn:hover {
  transform: translateY(-2px);
  border-color: var(--primary, #0F6B7C);
  box-shadow: var(--shadow-3d-md, 0 12px 24px -10px rgba(10, 60, 72, .4));
}

.ds-fnav-btn:disabled {
  opacity: .45;
  cursor: default;
  transform: none;
  box-shadow: none;
}

.ds-fnav-btn .ui-icon { width: 16px; height: 16px; }

/* ---------- Erisilebilirlik: focus + klavye ---------- */
.ds-page a:focus-visible,
.ds-page button:focus-visible,
.ds-page input:focus-visible,
.ds-page .topic-header:focus-visible,
.ds-page select:focus-visible {
  outline: 2px solid var(--primary, #0F6B7C);
  outline-offset: 2px;
  border-radius: 6px;
}

.ds-page .topic-header {
  cursor: pointer;
  border-radius: 8px;
}

.ds-page .unit-header[aria-expanded="true"] .chev,
.ds-page .topic-header[aria-expanded="true"] { /* acik durum chev zaten .open ile doner */ }

.ds-page .unit-header[aria-expanded="false"] .chev { transform: rotate(0deg); }

/* ---------- Unite / konu kaydirma payi (sticky bar alti) ---------- */
.ds-page .unit-item,
.ds-page .topic-card {
  scroll-margin-top: 210px;
}

@media (max-width: 768px) {
  .ds-studybar { top: 56px; padding: 8px 0; }
  .ds-sb-inner { gap: 8px; }
  .ds-search { flex: 1 1 100%; }
  .ds-progress { flex: 1 1 auto; min-width: 140px; }
  .ds-sb-status { display: none; }
  .ds-btn { padding: 8px 11px; font-size: .78rem; }
  .ds-unit-prog { min-width: 84px; }
  .ds-up-track { min-width: 44px; max-width: 70px; }
  .ds-floatnav { right: 84px; bottom: 12px; }
  .ds-fnav-btn { padding: 9px 12px; font-size: .76rem; }
  .ds-page .unit-item,
  .ds-page .topic-card { scroll-margin-top: 230px; }
}

/* Sticky bar altindaki ders notu arac cubugu ofseti */
.ds-studybar + .dn-toolbar {
  top: calc(64px + var(--ds-bar-h, 64px));
}

@media (max-width: 768px) {
  .ds-studybar + .dn-toolbar {
    top: calc(56px + var(--ds-bar-h, 96px));
  }
}

/* ============================================================
   YAZDIRMA / PDF
   ============================================================ */
@media print {
  @page {
    size: A4;
    margin: 14mm 12mm;
  }

  html, body {
    background: #fff !important;
    color: #000 !important;
    font-size: 11pt;
  }

  * {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  /* Gezinme, buton, reklam, etkilesim gizle */
  .site-header,
  .site-footer,
  .nav,
  .header-right,
  .dn-toolbar,
  .ds-studybar,
  .ds-toc,
  .ds-floatnav,
  .ds-empty,
  .dn-strategy,
  .dn-personal,
  .topic-actions,
  .btn-quiz,
  .dn-toast,
  .dn-modal-overlay,
  .hero,
  .hero-stats,
  .eyebrow,
  #cookieBanner,
  .cookie-banner,
  .ads,
  .ad-container,
  .lock-overlay,
  .btn-premium,
  [data-premium] .lock-overlay {
    display: none !important;
  }

  /* Tum konulari ac ve icerigi goster */
  .unit-content {
    max-height: none !important;
    overflow: visible !important;
    display: block !important;
  }

  .topic-body,
  .topic-card.active .topic-body {
    display: block !important;
    padding-left: 0 !important;
  }

  .topic-card { border-top: 1px solid #ccc !important; }

  /* Yazdirma basligi */
  #dn-print-header {
    display: flex !important;
    align-items: center;
    gap: 12px;
    border-bottom: 2px solid #111;
    padding-bottom: 10px;
    margin-bottom: 16px;
    page-break-after: avoid;
  }

  #dn-print-header .dn-ph-logo {
    width: 34px;
    height: 34px;
    flex-shrink: 0;
  }

  #dn-print-header .dn-ph-title {
    font-size: 17pt;
    font-weight: 800;
    line-height: 1.15;
  }

  #dn-print-header .dn-ph-sub {
    font-size: 9.5pt;
    color: #444;
  }

  #dn-print-header .dn-ph-meta {
    margin-left: auto;
    text-align: right;
    font-size: 9pt;
    color: #444;
  }

  /* Basliklar */
  h1, h2, h3, h4, h5 { color: #000 !important; page-break-after: avoid; }

  .section-head { text-align: left; margin-bottom: 14px; }
  .section-head .label { background: none !important; color: #000 !important; border: 1px solid #999; }

  .unit-item {
    border: 1px solid #ddd !important;
    border-radius: 0 !important;
    margin-bottom: 12px;
    page-break-inside: auto;
  }

  .unit-header {
    background: #f2f2f2 !important;
    border-bottom: 1px solid #ddd !important;
    page-break-after: avoid;
    padding: 10px 12px !important;
  }

  .unit-num { color: #000 !important; }
  .chev { display: none !important; }

  .topic-card { page-break-inside: auto; }
  .topic-header { padding: 8px 0 !important; cursor: default; }
  .topic-num { color: #000 !important; }

  /* Baglantilar normal yazi */
  a, a:visited {
    color: #000 !important;
    text-decoration: none !important;
    border: none !important;
  }

  /* Tablolar */
  table, .content-table {
    width: 100% !important;
    border-collapse: collapse !important;
    page-break-inside: avoid;
    font-size: 9.5pt;
  }

  th, td {
    border: 1px solid #888 !important;
    padding: 5px 7px !important;
    background: #fff !important;
    color: #000 !important;
  }

  th { background: #eee !important; }

  /* Formul / kod / kutular */
  .formula, .formula-box, code, .dn-formula-line {
    background: #f5f5f5 !important;
    border: 1px solid #bbb !important;
    color: #000 !important;
    page-break-inside: avoid;
  }

  .concept-box, .info-box, .warning-box, .step-box, .example-box,
  .key-points, .learning-objectives, .dn-block, .exercise-box,
  .common-mistakes, .tips, .summary, .person-card, .arg-card,
  .issue-card, .verse-card {
    background: #fff !important;
    border: 1px solid #ccc !important;
    page-break-inside: avoid;
  }

  .dn-block .formula-box::before { display: none !important; }

  /* Ozel ders notu karti yazdirma */
  .ders-notu {
    background: #fff !important;
    border: 1px solid #bbb !important;
    border-left: 4px solid #b8860b !important;
    page-break-inside: avoid;
    margin-top: 14px;
  }

  .dn-head {
    background: #faf3e0 !important;
    border-bottom: 1px solid #ddd !important;
  }

  .dn-grid { display: block !important; padding: 10px !important; }
  .dn-block { margin-bottom: 8px !important; }
  .dn-block h5 { font-size: 10pt; }
  .dn-block li { font-size: 10pt; color: #222 !important; }

  .dn-saved-note {
    display: block !important;
    margin-top: 10px;
    padding: 8px 10px;
    border: 1px dashed #999;
    font-size: 10pt;
    white-space: pre-wrap;
  }

  /* Grafikler */
  .diagram, svg { page-break-inside: avoid; }
  .diagram { text-align: center; margin: 10px 0; }
  .diagram .cap { font-size: 9pt; color: #333; }

  .wrap { max-width: none !important; padding: 0 !important; }
  .section { padding: 0 !important; }
  .topic-text { margin-bottom: 10px; }

  /* Uzun ogelerde sayfa sonu kontrolu */
  .example-card, .person-card, .verse-card { page-break-inside: avoid; }

  /* Bos sayfalari engelle */
  .site-footer + * { page-break-before: avoid; }
}

/* ---------- Notlar & Araclar: sol sekme rayi + pencere pencereleri ----------
   ders-araclar.js bu yapiyi kurar. 12px radius, altin aktif cizgi (#C5923E). */
.dnw { display: flex; gap: 16px; align-items: flex-start; max-width: 1100px; margin: 0 auto; padding: 2px 24px 4px; }
.dnw-rail { flex: 0 0 232px; display: flex; flex-direction: column; gap: 6px; position: sticky; top: 8px; }
.dnw-tab {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 11px 12px; border: 1px solid transparent; border-radius: 12px;
  background: transparent; color: var(--dn-ink, #64748B);
  font: 600 14px/1.25 inherit; text-align: left; cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
}
.dnw-tab:hover { background: var(--dn-amber-soft, rgba(0,0,0,.04)); color: var(--dn-ink, #1F2937); }
.dnw-tab[aria-selected="true"] {
  background: var(--dn-amber-soft, rgba(0,0,0,.05));
  color: var(--dn-ink, #1F2937);
  border-color: var(--border, #E2E8F0);
  box-shadow: inset 3px 0 0 #C5923E;
}
.dnw-tab:focus-visible { outline: 2px solid var(--dn-amber, #F59E0B); outline-offset: 2px; }
.dnw-tab .ui-icon { width: 17px; height: 17px; flex: 0 0 17px; }
.dnw-wins { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 14px; }
.dnw-win { display: flex; flex-direction: column; border: 1px solid var(--border, #E2E8F0); border-radius: 12px; background: var(--bg, #fff); overflow: hidden; }
.dnw-win[hidden] { display: none; }
.dnw-bar {
  display: flex; align-items: center; gap: 9px; padding: 9px 14px;
  border-bottom: 1px solid var(--border, #E2E8F0);
  background: color-mix(in srgb, var(--dn-amber) 7%, var(--bg, #fff));
}
.dnw-bar .ui-icon { width: 15px; height: 15px; flex: 0 0 15px; color: var(--dn-amber, #F59E0B); }
.dnw-bar b { font-size: 13px; font-weight: 600; letter-spacing: .01em; color: var(--dn-ink, #1F2937); }
.dnw-dots { margin-left: auto; display: flex; gap: 5px; }
.dnw-dots i { width: 7px; height: 7px; border-radius: 50%; background: var(--border-2, #CBD5E1); opacity: .8; }
/* Calisma alani: kucuk dikdortgen degil, ferah bir pencere.
   Viewport'a gore buyur; tablet/telefonda da yeterli yukseklik birakir. */
.dnw-body { flex: 1 1 auto; padding: 18px 22px 24px; min-height: clamp(340px, 52vh, 640px); }
.dnw-sub { margin: 0 0 14px; font-size: 13px; color: var(--dn-ink, #64748B); opacity: .85; }
.dnw-body .dn-toolbar { position: static; border: 0; background: transparent; padding: 0; backdrop-filter: none; box-shadow: none; }
.dnw-body .dn-toolbar-inner { padding: 0; max-width: none; }
.dnw-body .dn-strategy .wrap { padding: 0; max-width: none; margin: 0; }
.dnw-body .dn-strategy { margin: 0; }
/* Sabit birim "İÇİNDEKİLER" (.ds-toc) yalnizca Umiteler sekmesinde gosterilir:
   Notlar / Kesfet sekmesinde ilgisizdir ve sol sekme rayini orter. */
body:has(#dt-panel-notlar:not([hidden])) .ds-toc,
body:has(#dt-panel-kesfet:not([hidden])) .ds-toc { display: none !important; }
/* ---- Tablet: ray daralir, alan tam genislik ---- */
@media (max-width: 1100px) {
  .dnw { gap: 12px; }
  .dnw-rail { flex: 0 0 200px; }
}
/* ---- Kucuk tablet / buyuk telefon: ray yatay serit olur ---- */
@media (max-width: 900px) {
  .dnw { flex-direction: column; align-items: stretch; padding: 2px 16px 4px; gap: 10px; }
  .dnw-rail { flex: none; width: 100%; flex-direction: row; overflow-x: auto; position: static; padding-bottom: 4px; gap: 8px; scrollbar-width: thin; }
  .dnw-tab { width: auto; flex: 0 0 auto; white-space: nowrap; }
  .dnw-tab[aria-selected="true"] { box-shadow: inset 0 -3px 0 #C5923E; }
  .dnw-body { min-height: clamp(300px, 46vh, 520px); padding: 16px 16px 20px; }
}
/* ---- Telefon: sikistirilmis, dokunmatik dostu ---- */
@media (max-width: 600px) {
  .dnw { padding: 2px 12px 4px; gap: 8px; }
  .dnw-tab { padding: 10px 12px; font-size: 13.5px; }
  .dnw-bar { padding: 8px 12px; }
  .dnw-body { min-height: clamp(280px, 44vh, 460px); padding: 14px 14px 18px; }
  .dnw-sub { font-size: 12.5px; }
}