/* ==========================================================================
   Tam Sayılar Dünyası - Modern Eğitim & Çalışma Yaprağı Platformu
   Tasarım Sistemi, Bileşenler ve Baskı (@media print) Kuralları
   ========================================================================== */

@import url('https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css');
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=STIX+Two+Text:ital,wght@0,400..700;1,400..700&family=JetBrains+Mono:wght@500;600;700&display=swap');

:root {
  /* Renk Paleti - Canlı, Modern, Göz Yormayan Eğitim Teması */
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #e0e7ff;
  --primary-glow: rgba(79, 70, 229, 0.25);
  
  --secondary: #06b6d4;
  --secondary-hover: #0891b2;
  --secondary-light: #cffafe;
  
  --accent-purple: #8b5cf6;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  --accent-emerald: #10b981;

  --success: #10b981;
  --success-light: #d1fae5;
  --danger: #ef4444;
  --danger-light: #fee2e2;
  --warning: #f59e0b;
  --info: #3b82f6;

  /* Arka Plan ve Yüzeyler (Aydınlık Tema) */
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --border-color: #e2e8f0;
  --border-focus: #6366f1;

  /* Tipografi Renkleri */
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --text-inverse: #ffffff;

  /* Gölgeler */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.06);
  --shadow-sheet: 0 12px 30px rgba(15, 23, 42, 0.12);

  /* Yuvarlama ve Geçişler */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);

  /* Tipografi */
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-math: 'KaTeX_Main', 'STIX Two Text', 'Cambria Math', 'Times New Roman', serif;
}

/* Karanlık Tema */
[data-theme="dark"] {
  --bg-main: #0b0f19;
  --bg-card: #131b2e;
  --bg-glass: rgba(19, 27, 46, 0.88);
  --border-color: #232f48;
  --border-focus: #818cf8;

  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-light: #64748b;

  --shadow-sheet: 0 16px 40px rgba(0, 0, 0, 0.5);
  --primary-light: rgba(79, 70, 229, 0.2);
  --secondary-light: rgba(6, 182, 212, 0.2);
}

/* Reset & Temel Yapı */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Üst Navigasyon / Başlık Çubuğu */
.app-navbar {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 20px;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.brand-text h1 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.brand-text p {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Mod Değiştirici Butonlar (Yazdır / İnteraktif) */
.mode-switch-container {
  display: flex;
  background: var(--border-color);
  padding: 4px;
  border-radius: var(--radius-lg);
  gap: 4px;
}

.mode-btn {
  border: none;
  background: transparent;
  padding: 8px 18px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.mode-btn.active {
  background: var(--bg-card);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.icon-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-light);
}

/* Ana Uygulama Gövdesi */
.app-container {
  max-width: 1560px;
  margin: 0 auto;
  padding: 24px;
  width: 100%;
  flex: 1;
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 28px;
  align-items: start;
}

/* Sol Panel: Öğretmen Kontrol & Ayar Paneli */
.control-sidebar {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 86px;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.control-sidebar::-webkit-scrollbar {
  width: 6px;
}
.control-sidebar::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 14px;
}

.panel-header h2 {
  font-size: 1.05rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.badge-tag {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 20px;
  background: var(--primary-light);
  color: var(--primary);
  text-transform: uppercase;
}

/* Form Kontrolleri */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.form-group label span.hint {
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--text-light);
}

select, input[type="text"], input[type="number"] {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border-color);
  background: var(--bg-main);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 500;
  transition: var(--transition);
  outline: none;
}

select:focus, input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--primary-glow);
  background: var(--bg-card);
}

/* Hap (Pill) Buton Seçenekleri */
.pill-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.pill-group.col-2 {
  grid-template-columns: repeat(2, 1fr);
}

.pill-option {
  position: relative;
}

.pill-option input[type="radio"],
.pill-option input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
  z-index: 2;
}

.pill-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 8px 6px;
  background: var(--bg-main);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  text-align: center;
  transition: var(--transition);
}

.pill-option input:checked + .pill-label {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
  font-weight: 700;
}

/* Hızlı Değer Çipleri (Soru Sayısı vb.) */
.quick-preset-chips {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.chip-btn {
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  font-size: 0.74rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.chip-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

.chip-btn.active {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
  font-weight: 700;
}

/* Akordeon & Detay Grupları */
.accordion-box {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.accordion-summary {
  padding: 10px 14px;
  background: var(--bg-main);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.84rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.accordion-content {
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--bg-card);
}

/* Ana Eylem Butonları */
.action-buttons-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border-color);
}

.btn {
  padding: 12px 18px;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #6366f1);
  color: white;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-hover), var(--primary));
  transform: translateY(-1px);
  box-shadow: 0 6px 18px var(--primary-glow);
}

.btn-success {
  background: linear-gradient(135deg, #10b981, #059669);
  color: white;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.25);
}

.btn-success:hover {
  background: linear-gradient(135deg, #059669, #047857);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border-color);
  color: var(--text-main);
}

.btn-outline:hover {
  background: var(--bg-main);
  border-color: var(--text-muted);
}

.btn-group-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

/* Sağ Alan: Önizleme / Çalışma Kağıdı / İnteraktif Bölüm */
.main-stage {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}

/* Bilgi / İpuçları Çubuğu */
.stage-toolbar {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  gap: 12px;
  flex-wrap: wrap;
}

.toolbar-status {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.status-badge {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
}

/* A4 Kağıdı Sayfa Önizleme Alanı */
.worksheet-paper-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 36px;
  width: 100%;
}

.a4-sheet {
  background: #ffffff;
  color: #1e293b;
  width: 100%;
  max-width: 820px;
  min-height: 1160px; /* Standart A4 orantısı */
  padding: 36px 44px;
  border-radius: 8px;
  box-shadow: var(--shadow-sheet);
  border: 1px solid #e2e8f0;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease;
}

/* Çalışma Kağıdı Başlık Alanı (A4) */
.paper-header {
  border-bottom: 2px solid #0f172a;
  padding-bottom: 12px;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.school-title {
  text-align: center;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #0f172a;
  text-transform: uppercase;
  outline: none;
}

.sheet-title {
  text-align: center;
  font-size: 1.02rem;
  font-weight: 700;
  color: #334155;
  background: #f1f5f9;
  padding: 4px 10px;
  border-radius: 4px;
  display: inline-block;
  margin: 0 auto;
}

.student-meta-grid {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1fr;
  gap: 12px;
  padding-top: 10px;
  font-size: 0.84rem;
  font-weight: 600;
  color: #1e293b;
}

.meta-field {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.meta-line {
  flex: 1;
  border-bottom: 1px dotted #64748b;
  height: 14px;
}

.test-code-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #64748b;
  text-align: right;
}

/* Sorular Izgarası (Grid) */
.paper-questions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  column-gap: 32px;
  row-gap: 18px;
  margin-top: 10px;
  flex: 1;
}

.paper-questions-grid.cols-3 {
  grid-template-columns: repeat(3, 1fr);
  column-gap: 18px;
  row-gap: 16px;
}

.paper-questions-grid.cols-1 {
  grid-template-columns: 1fr;
  row-gap: 18px;
}

/* Soru Kartı (A4 Baskı İçi) */
.q-box {
  padding: 8px 12px;
  border-radius: 6px;
  border: 1px dashed #cbd5e1;
  background: #ffffff;
  page-break-inside: avoid;
  break-inside: avoid;
  display: flex;
  flex-direction: column;
  justify-content: flex-start; /* Sol üst hizalama */
  align-items: flex-start;     /* Sol üst hizalama */
  gap: 4px;
  min-height: 64px;            /* Öğrenciye işlem boşluğu bırakır */
  box-sizing: border-box;
}

.q-box.test-mode {
  min-height: 94px;
  justify-content: flex-start;
  gap: 6px;
}

.q-top {
  display: flex;
  align-items: baseline;
  justify-content: flex-start;
  gap: 8px;
  width: 100%;
  margin: 0;
  padding: 0;
}

.q-prompt-left {
  display: flex;
  align-items: baseline;
  justify-content: flex-start;
  gap: 8px;
  width: 100%;
}

.q-num {
  font-weight: 800;
  color: #0f172a;
  font-size: 0.92rem;
  min-width: 20px;
  font-family: var(--font-sans);
  line-height: 1;
}

.q-math {
  font-family: var(--font-math);
  font-size: 1.02rem; /* Punto düşürüldü: 1.25rem'den 1.02rem'e (~16px) */
  font-weight: 500;
  letter-spacing: 0.02em;
  color: #0f172a;
  white-space: nowrap;
  line-height: 1.25;
}

/* Çoktan Seçmeli Şıklar (A, B, C, D) */
.q-choices-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4px 12px;
  margin-top: 4px;
  padding-left: 28px;
  width: 100%;
}

.q-choice-item {
  font-size: 0.95rem;
  font-family: var(--font-math);
  color: #1e293b;
  white-space: nowrap;
}

.q-choice-letter {
  font-weight: 700;
  font-family: var(--font-sans);
  color: #0f172a;
  margin-right: 4px;
  font-size: 0.88rem;
}

/* Dinamik Punto Seçenekleri */
.paper-questions-grid.font-size-small .q-math { font-size: 0.90rem; }
.paper-questions-grid.font-size-small .q-num { font-size: 0.82rem; }
.paper-questions-grid.font-size-small .q-choice-item { font-size: 0.85rem; }

.paper-questions-grid.font-size-medium .q-math { font-size: 1.02rem; }
.paper-questions-grid.font-size-medium .q-num { font-size: 0.92rem; }
.paper-questions-grid.font-size-medium .q-choice-item { font-size: 0.95rem; }

.paper-questions-grid.font-size-large .q-math { font-size: 1.16rem; }
.paper-questions-grid.font-size-large .q-num { font-size: 1.02rem; }
.paper-questions-grid.font-size-large .q-choice-item { font-size: 1.05rem; }

/* Sayfa Sonu Kompakt Cevap Şeridi */
.paper-footer-answers {
  margin-top: 20px;
  padding-top: 10px;
  border-top: 1px solid #cbd5e1;
  font-size: 0.72rem;
  color: #64748b;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mini-key-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-family: var(--font-mono);
}

.mini-key-item {
  background: #f1f5f9;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid #e2e8f0;
}

/* İkinci Sayfa: Detaylı Cevap Anahtarı (Yazdırırken ayrı sayfa) */
.answers-page-sheet {
  background: #ffffff;
  color: #1e293b;
  width: 100%;
  max-width: 820px;
  padding: 36px 44px;
  border-radius: 8px;
  box-shadow: var(--shadow-sheet);
  border: 1px solid #e2e8f0;
  page-break-before: always;
  break-before: page;
}

.answers-header {
  border-bottom: 2px solid #0f172a;
  padding-bottom: 12px;
  margin-bottom: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.answers-header h3 {
  font-size: 1.15rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 8px;
}

.answers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.ans-card {
  padding: 10px 12px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-left: 4px solid var(--primary);
  border-radius: 4px;
  font-size: 0.85rem;
}

.ans-card .ans-q {
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 2px;
}

.ans-card .ans-val {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--primary);
  font-size: 1.05rem;
}

.ans-card .ans-step {
  font-size: 0.74rem;
  color: #64748b;
  margin-top: 4px;
  line-height: 1.3;
}

/* ==========================================================================
   ÖĞRENCİ İNTERAKTİF ÇÖZÜM MODU TASARIMI
   ========================================================================== */
.interactive-view {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}

/* İnteraktif Üst Durum Çubuğu */
.interactive-stats-bar {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-md);
  gap: 16px;
  flex-wrap: wrap;
}

.timer-box {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 16px;
  border-radius: var(--radius-md);
}

.progress-pill-group {
  display: flex;
  align-items: center;
  gap: 16px;
}

.stat-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-chip .val {
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--text-main);
  font-family: var(--font-mono);
}

.stat-chip .lbl {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
}

/* İnteraktif Soru Listesi / Kartları */
.interactive-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.interactive-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.interactive-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.interactive-card.is-correct {
  border-color: var(--success);
  background: rgba(16, 185, 129, 0.03);
}

.interactive-card.is-wrong {
  border-color: var(--danger);
  background: rgba(239, 68, 68, 0.03);
}

.i-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.i-card-badge {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-main);
  padding: 4px 10px;
  border-radius: 6px;
}

.i-question-text {
  font-size: 1.65rem;
  font-family: var(--font-math);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* Klasik Giriş Alanı */
.i-input-box {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 320px;
}

.i-input-box input {
  font-family: var(--font-math);
  font-size: 1.4rem;
  font-weight: 600;
  text-align: center;
  padding: 10px;
  letter-spacing: 0.05em;
}

/* Test Şık Butonları */
.i-choices-container {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.i-choice-btn {
  padding: 14px 18px;
  background: var(--bg-main);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  font-family: var(--font-math);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: var(--transition);
}

.i-choice-btn:hover {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
}

.i-choice-btn.selected {
  border-color: var(--primary);
  background: var(--primary);
  color: white;
}

.i-choice-btn.correct-reveal {
  border-color: var(--success) !important;
  background: var(--success) !important;
  color: white !important;
}

.i-choice-btn.wrong-reveal {
  border-color: var(--danger) !important;
  background: var(--danger) !important;
  color: white !important;
}

.i-choice-letter {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 800;
}

/* Çözüm Açıklaması Kutusu */
.i-solution-box {
  background: var(--bg-main);
  border-left: 4px solid var(--secondary);
  padding: 12px 16px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 0.86rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.i-solution-title {
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Sonuç Modalı / Karne Ekranı */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(8px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.result-modal {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  max-width: 520px;
  width: 100%;
  padding: 32px;
  text-align: center;
  box-shadow: var(--shadow-xl);
  transform: translateY(20px) scale(0.95);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.modal-overlay.active .result-modal {
  transform: translateY(0) scale(1);
}

.result-badge-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  background: var(--primary-light);
  color: var(--primary);
  margin-bottom: 4px;
}

.result-modal h3 {
  font-size: 1.5rem;
  font-weight: 800;
}

.score-display {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.score-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: 100%;
  gap: 12px;
  margin: 10px 0;
  background: var(--bg-main);
  padding: 14px;
  border-radius: var(--radius-md);
}

.stat-block .stat-n {
  font-size: 1.25rem;
  font-weight: 800;
  font-family: var(--font-mono);
}

.stat-block .stat-t {
  font-size: 0.74rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* Konfeti Canvas */
#confettiCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 1000;
}

/* ==========================================================================
   GOOGLE ADSENSE ALANLARI VE ALT BİLGİ (FOOTER)
   ========================================================================== */
.ad-container-box {
  display: none !important; /* Kullanıcı ertelediği için geçici olarak gizlendi */
}

.ad-footer-banner {
  display: none !important; /* Kullanıcı ertelediği için geçici olarak gizlendi */
}

.ad-label-tag {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-light);
  margin-bottom: 6px;
  text-transform: uppercase;
}

/* Alt Bilgi (Footer) */
.app-footer {
  margin-top: auto;
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 22px 16px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.footer-links a:hover {
  text-decoration: underline;
}

/* Gizlilik Politikası & Kullanım Koşulları Modalı */
.privacy-modal-box {
  max-width: 620px;
  max-height: 85vh;
  overflow-y: auto;
  text-align: left;
}

/* ==========================================================================
   🖨️ ULTRA-TEMİZ YAZDIRMA & PDF (@media print) KURALLARI
   A4 Standart Boyut, Kenar Boşlukları ve Baskı Optimizasyonu
   ========================================================================== */
@media print {
  @page {
    size: A4 portrait;
    margin: 12mm 15mm 12mm 15mm; /* İdeal A4 kenar boşluğu */
  }

  /* Ekrana özgü tüm UI elemanlarını ve reklamları tamamen gizle */
  .no-print,
  .app-navbar,
  .control-sidebar,
  .stage-toolbar,
  .interactive-view,
  .modal-overlay,
  #confettiCanvas,
  .ad-container-box,
  .ad-footer-banner,
  .app-footer,
  ins.adsbygoogle {
    display: none !important;
  }

  body {
    background: #ffffff !important;
    color: #000000 !important;
    font-size: 11pt;
    margin: 0 !important;
    padding: 0 !important;
  }

  .app-container {
    display: block !important;
    max-width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  .main-stage {
    display: block !important;
  }

  .worksheet-paper-wrapper {
    display: block !important;
  }

  .a4-sheet {
    box-shadow: none !important;
    border: none !important;
    padding: 0 !important;
    margin: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    min-height: auto !important;
    page-break-after: auto;
  }

  /* Yazdırırken arkaplan renklerini zorla göster */
  * {
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }

  .paper-questions-grid {
    row-gap: 10px !important;
  }

  .q-box {
    border: 1px solid #94a3b8 !important;
    background: #ffffff !important;
    break-inside: avoid !important;
    page-break-inside: avoid !important;
    justify-content: flex-start !important; /* Baskıda sol üst hizalama */
    align-items: flex-start !important;     /* Baskıda sol üst hizalama */
    padding: 6px 10px !important;
    min-height: 60px !important;            /* Öğrenci işlem alanı */
    margin-bottom: 6px !important;
  }

  .q-box.test-mode {
    min-height: 85px !important;
  }

  .q-top {
    justify-content: flex-start !important;
    align-items: baseline !important;
    margin-bottom: 2px !important;
    width: 100% !important;
  }

  .q-prompt-left {
    justify-content: flex-start !important;
    align-items: baseline !important;
  }

  .q-num {
    font-size: 9.5pt !important;
    min-width: 18px !important;
    line-height: 1 !important;
  }

  .q-math {
    font-size: 10.5pt !important; /* Standart MEB/Sınav puntosuna düşürüldü */
    line-height: 1.25 !important;
  }

  .q-choices-grid {
    margin-top: 4px !important;
    padding-left: 20px !important;
    gap: 4px 10px !important;
    width: 100% !important;
  }

  .q-choice-item {
    font-size: 9pt !important;
  }

  /* Yazdırmada punto sınıfları */
  .paper-questions-grid.font-size-small .q-math { font-size: 9pt !important; }
  .paper-questions-grid.font-size-small .q-num { font-size: 8.5pt !important; }
  .paper-questions-grid.font-size-small .q-choice-item { font-size: 8.5pt !important; }

  .paper-questions-grid.font-size-medium .q-math { font-size: 10.5pt !important; }
  .paper-questions-grid.font-size-medium .q-num { font-size: 9.5pt !important; }
  .paper-questions-grid.font-size-medium .q-choice-item { font-size: 9pt !important; }

  .paper-questions-grid.font-size-large .q-math { font-size: 12pt !important; }
  .paper-questions-grid.font-size-large .q-num { font-size: 10.5pt !important; }
  .paper-questions-grid.font-size-large .q-choice-item { font-size: 10.5pt !important; }

  .sheet-title {
    background: #f1f5f9 !important;
    border: 1px solid #cbd5e1 !important;
  }

  .answers-page-sheet {
    box-shadow: none !important;
    border: none !important;
    padding: 0 !important;
    margin-top: 20mm !important;
    page-break-before: always !important;
    break-before: page !important;
  }

  .ans-card {
    background: #ffffff !important;
    border: 1px solid #cbd5e1 !important;
    border-left: 4px solid #4f46e5 !important;
    break-inside: avoid !important;
  }
}

/* Masaüstünde mobil ayarlar butonunu gizle */
.mobile-settings-btn {
  display: none !important;
}

@keyframes fadeInSlide {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Tablet Görünümü (769px - 1080px) */
@media (max-width: 1080px) and (min-width: 769px) {
  .app-container {
    grid-template-columns: 290px 1fr;
    gap: 18px;
    padding: 16px;
  }

  .control-sidebar {
    padding: 16px;
    top: 76px;
  }

  .a4-sheet {
    padding: 28px 32px;
  }
}

/* Mobil ve Küçük Tablet Görünümü (<= 900px) */
@media (max-width: 900px) {
  .app-container {
    grid-template-columns: 1fr;
    padding: 12px 10px;
    gap: 16px;
  }

  .mobile-settings-btn {
    display: inline-flex !important;
  }

  /* Mobilde Ayarlar Paneli Varsayılan Olarak Gizli (A4 kağıdı veya test hemen görünsün) */
  .control-sidebar {
    display: none;
    position: static;
    max-height: none;
    margin-bottom: 8px;
    border: 2px solid var(--primary);
  }

  .control-sidebar.mobile-open {
    display: flex;
    animation: fadeInSlide 0.25s ease-out;
  }
}

/* Telefon Ekranları (<= 640px) */
@media (max-width: 640px) {
  .app-navbar {
    padding: 8px 12px;
    gap: 10px;
    flex-wrap: wrap;
  }

  .brand-section {
    width: auto;
    gap: 8px;
  }

  .brand-icon {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }

  .brand-text h1 {
    font-size: 1rem;
  }

  .brand-text p {
    display: none; /* Mobilde dikey alanı korumak için gizle */
  }

  .nav-actions {
    margin-left: auto;
    gap: 6px;
  }

  .mobile-settings-btn {
    padding: 6px 10px;
    font-size: 0.8rem;
  }

  .btn-print-quick .btn-text {
    display: none; /* Mobilde sadece yazıcı simgesi göster */
  }

  .btn-print-quick {
    padding: 8px 10px !important;
  }

  .mode-switch-container {
    width: 100%;
    order: 3;
    display: grid;
    grid-template-columns: 1fr 1fr;
    padding: 3px;
  }

  .mode-btn {
    padding: 8px 6px;
    font-size: 0.8rem;
    justify-content: center;
  }

  /* Kağıt ve Soru Düzeni */
  .worksheet-paper-wrapper {
    gap: 16px;
  }

  .a4-sheet {
    padding: 18px 14px !important;
    border-radius: 6px;
    box-shadow: var(--shadow-sm);
  }

  .paper-header {
    margin-bottom: 12px;
    padding-bottom: 8px;
  }

  .school-title {
    font-size: 0.92rem;
  }

  .sheet-title {
    font-size: 0.82rem;
    padding: 4px 6px;
  }

  .student-meta-grid {
    grid-template-columns: 1fr;
    gap: 6px;
    font-size: 0.8rem;
  }

  .paper-questions-grid {
    grid-template-columns: 1fr !important;
    row-gap: 12px;
  }

  .q-box {
    padding: 10px 12px;
    min-height: 48px;
  }

  .q-math {
    font-size: 1.15rem;
    white-space: normal;
    word-break: break-word;
  }

  .answers-page-sheet {
    padding: 18px 14px !important;
  }

  .answers-grid {
    grid-template-columns: 1fr !important;
    gap: 8px;
  }

  /* İnteraktif Mod Mobilde */
  .interactive-stats-bar {
    padding: 12px 14px;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .timer-box {
    justify-content: center;
  }

  .progress-pill-group {
    justify-content: center;
  }

  .i-question-text {
    font-size: 1.35rem;
  }

  .i-choices-container {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .i-choice-btn {
    padding: 12px 14px;
    font-size: 1.1rem;
  }

  .i-input-box {
    max-width: 100%;
    width: 100%;
  }

  .i-input-box input {
    width: 100%;
    font-size: 1.3rem;
  }

  /* iOS Safari Zoom Engelleme (Font-size >= 16px) */
  select,
  input[type="text"],
  input[type="number"] {
    font-size: 16px !important;
  }

  /* Dokunmatik Buton Boyutları */
  button,
  .pill-label,
  .chip-btn,
  .mode-btn {
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
  }
}