/* =========================================================
   EXAM SYSTEM - ORTAK TABAN CSS
   Hem MCQ hem OPEN sınavlar için kullanılır
   ========================================================= */

:root {
  /* Renkler */
  --primary-color: #0066cc;
  --primary-hover: #0052a3;
  --success-color: #28a745;
  --success-light: #d4edda;
  --success-bg: #e2f0cb;
  --danger-color: #dc3545;
  --danger-light: #f8d7da;
  --warning-color: #ffc107;
  
  /* Borders & Backgrounds */
  --border-color: #dee2e6;
  --border-light: #ccc;
  --bg-light: #f8f9fa;
  --bg-white: #fff;
  --bg-info: #e8f1ff;
  
  /* Spacing */
  --spacing-xs: 5px;
  --spacing-sm: 8px;
  --spacing-md: 10px;
  --spacing-lg: 15px;
  --spacing-xl: 20px;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 10px;
  --radius-xl: 12px;
  --radius-round: 999px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 3px 6px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 8px rgba(0, 0, 0, 0.2);
  --shadow-card: 0 0 10px 1px rgba(0, 0, 0, 0.4);
  
  /* Typography */
  --font-base: 1rem;
  --font-sm: 0.875rem;
  --font-lg: 1.5rem;
  --font-xl: 1.6rem;
  --font-weight-normal: 500;
  --font-weight-bold: 600;
  --font-weight-extra: 700;
  
  /* Transitions */
  --transition-fast: all 0.2s ease;
  --transition-normal: all 0.3s ease;
}

/* =========================================================
   ORTAK WRAPPER & CONTAINER
   ========================================================= */

.exam-wrap {
  margin-bottom: var(--spacing-xl);
}

/* =========================================================
   BAŞLANGIÇ EKRANI (START SCREEN)
   ========================================================= */

.exam-start {
  background: var(--bg-light);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
  padding: var(--spacing-xl);
  text-align: center;
  height: 400px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.exam-start h3 {
  font-size: var(--font-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: 1rem;
}

.exam-start p.text-muted {
  font-size: var(--font-base);
  margin-bottom: 1rem;
  color: #666;
}

.exam-start h4 {
  font-size: var(--font-lg);
  margin: 0 0 var(--spacing-xl) !important;
}

/* =========================================================
   PRIMARY BUTTON (Sınava Başla / Devam Et)
   ========================================================= */

.exam-btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--primary-color);
  color: var(--bg-white) !important;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: var(--transition-normal);
  border: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: var(--font-weight-normal);
  box-shadow: var(--shadow-sm);
}

.exam-btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* =========================================================
   HEADER (Üst Bilgi Çubuğu)
   ========================================================= */

.exam-header {
  font-size: var(--font-base);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  background: var(--bg-light);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-xl);
}

/* =========================================================
   EXAM AREA (Sınav Alanı)
   ========================================================= */

.exam-area {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  background: var(--bg-white);
  padding: var(--spacing-xl);
}

.exam-question-content {
  border: none !important;
  border-radius: 0;
  background: transparent;
  padding: var(--spacing-xl);
  text-align: center;
}

/* =========================================================
   CONTROLS (Navigasyon Butonları)
   ========================================================= */

.exam-controls {
  margin-top: var(--spacing-xl);
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-xs);
}

.exam-controls .btn {
  color: var(--bg-white);
  font-size: var(--font-base);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  border: 1px solid var(--border-color);
}

.exam-controls .btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* =========================================================
   SONUÇ EKRANI (RESULTS)
   ========================================================= */

.exam-result .alert {
  background: #f0fdf4;
  padding: var(--spacing-xs) var(--spacing-lg);
}

.exam-result .alert p {
  margin: 0 0 var(--spacing-xs);
}

.exam-details {
  margin-top: var(--spacing-xl);
}

.exam-details .card {
  border-radius: var(--radius-md);
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

/* =========================================================
   LEADERBOARDLİDERLİK TABLOSU)
   ========================================================= */

.exam-leaderboard {
  margin-top: 30px;
}

.exam-leaderboard table {
  width: 100%;
  min-width: 400px;
  border-collapse: collapse;
}

.exam-leaderboard th,
.exam-leaderboard td {
  padding: 12px !important;
  text-align: center;
  border: 1px solid var(--border-color);
}

.exam-leaderboard th {
  background-color: var(--bg-light);
  font-weight: var(--font-weight-bold);
}

.exam-leaderboard h4 {
  margin: 0 0 var(--spacing-lg);
}

/* =========================================================
   GUEST INPUT BOX (Misafir İsim Kutusu)
   ========================================================= */

.exam-guest-box {
  width: 100%;
  max-width: 420px;
  margin-top: 14px;
}

.exam-guest-inner {
  width: 100%;
  text-align: left;
}

.exam-guest-label {
  display: block;
  font-weight: var(--font-weight-bold);
  margin-bottom: 6px;
}

.exam-guest-input {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid #ddd;
  border-radius: var(--radius-lg);
  outline: none;
}

.exam-guest-input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 5px rgba(0, 123, 255, 0.25);
}

.exam-guest-error {
  margin-top: var(--spacing-sm);
  color: #b00020;
  font-size: var(--font-sm);
}

/* =========================================================
   NAVIGATION DOTS (Soru Numaraları)
   ========================================================= */

.exam-nav {
  margin-top: 12px;
  margin-bottom: 12px;
}

.exam-nav-inner {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  background: var(--bg-light);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
}

.exam-nav-dot {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-round);
  border: 1px solid var(--border-color);
  background: var(--bg-white);
  cursor: pointer;
  font-weight: var(--font-weight-extra);
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.exam-nav-dot:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.exam-nav-dot.is-active {
  background: var(--primary-color);
  color: var(--bg-white);
  border-color: var(--primary-color);
}

.exam-nav-dot.is-answered:not(.is-active) {
  background: var(--bg-info);
  border-color: #bcd6ff;
}

/* =========================================================
   FULLSCREEN MODE
   ========================================================= */

/* Tam ekran butonu */
#toggle-fullscreen,
.exam-fullscreen-btn {
  background-color: transparent;
  color: #333;
  padding: 0;
  border: none;
  cursor: pointer;
}

/* Fullscreen aktif olduğunda */
body.fullscreen-active .exam-wrap,
body.fullscreen-active #online-test-wrap,
body.fullscreen-active #mv-open-exam-wrap {
  background: var(--bg-white);
  padding: var(--spacing-xl);
  min-height: 100vh;
}

body.fullscreen-active .exam-header,
body.fullscreen-active #quiz-header {
  background-color: var(--bg-white) !important;
  color: #000 !important;
  border: 1px solid #ddd;
}

body.fullscreen-active .exam-header strong,
body.fullscreen-active #quiz-header strong {
  color: #000 !important;
}

/* =========================================================
   QUIZ NAVIGATION (SORU NUMARALARI) - ORTAK
   Her iki sınav tipi de kullanır
   ========================================================= */

.online-test-nav {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  padding: var(--spacing-md) 0;
}

.online-test-nav .nav-item {
  width: 38px;
  height: 38px;
  line-height: 38px;
  border-radius: var(--radius-round);
  background-color: var(--bg-white);
  border: 2px solid var(--border-light);
  text-align: center;
  cursor: pointer;
  font-weight: var(--font-weight-bold);
  transition: var(--transition-fast);
  font-size: 14px;
}

.online-test-nav .nav-item.marked,
.online-test-nav .nav-item.is-answered {
  background-color: #333;
  color: var(--bg-white);
  border-color: #333;
}

.online-test-nav .nav-item.active,
.online-test-nav .nav-item.is-active {
  background-color: var(--primary-color);
  color: var(--bg-white);
  border-color: var(--primary-color);
  box-shadow: 0 0 5px rgba(0, 102, 204, 0.6);
  transform: scale(1.05);
}

.online-test-nav .nav-item.empty {
  background-color: var(--bg-white);
  color: #333;
  border-color: var(--border-light);
}

.online-test-nav .nav-item:hover {
  opacity: 0.85;
  transform: scale(1.1);
}

/* =========================================================
   RESPONSIVE - MOBİL GÖRÜNÜM
   ========================================================= */

@media (max-width: 768px) {
  .exam-controls .btn {
    width: 100%;
  }

  .exam-btn-primary {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 14px;
  }

  .exam-leaderboard {
    overflow-x: auto;
  }

  .exam-nav-dot,
  .online-test-nav .nav-item {
    width: 34px;
    height: 34px;
    line-height: 34px;
    font-size: 13px;
  }
}