/* Global CSS Reset & Variables */
:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --accent-yellow: #fbbf24;
  --accent-yellow-hover: #f59e0b;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  
  --glass-bg: rgba(30, 41, 59, 0.7);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  
  --font-family: 'Outfit', sans-serif;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background: radial-gradient(circle at center, #1e293b 0%, #0f172a 100%);
  color: var(--text-main);
  min-height: 100vh;
  min-height: 100dvh; /* mobil klavye/adres çubuğu ile doğru yükseklik */
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-x: hidden;
  line-height: 1.5;
}

/* App Container */
.app-container {
  width: 100%;
  max-width: 600px;
  min-height: 80vh;
  margin: 20px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Screen Management */
.screen {
  opacity: 0;
  visibility: hidden;
  display: none;
  transition: opacity 0.5s ease, transform 0.5s ease;
  transform: translateY(20px);
  width: 100%;
}

.screen.active {
  opacity: 1;
  visibility: visible;
  display: flex;
  flex-direction: column;
  transform: translateY(0);
}

/* Buttons */
.btn {
  font-family: var(--font-family);
  font-weight: 600;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  font-size: 1rem;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.2rem;
}

.primary-btn {
  background: linear-gradient(135deg, var(--accent-yellow) 0%, var(--accent-yellow-hover) 100%);
  color: #0f172a;
  box-shadow: 0 4px 20px rgba(251, 191, 36, 0.3);
}

.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(251, 191, 36, 0.5);
}

.success-btn {
  background: var(--accent-green);
  color: #fff;
  padding: 12px 24px;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.success-btn:hover {
  background: #059669;
  transform: translateY(-1px);
}

.warning-btn {
  background: rgba(251, 191, 36, 0.15);
  border: 1px solid var(--accent-yellow);
  color: var(--accent-yellow);
  padding: 12px 20px;
}

.warning-btn:hover {
  background: var(--accent-yellow);
  color: #0f172a;
}

.danger-btn {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--accent-red);
  padding: 12px 20px;
}

.danger-btn:hover {
  background: var(--accent-red);
  color: #fff;
}

/* Glassmorphism Panel */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: 24px;
  padding: 24px;
}

/* Start Screen Styling */
#start-screen {
  text-align: center;
}

.logo-animation {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 24px;
}

.letter-box-3d {
  width: 48px;
  height: 48px;
  background: var(--bg-secondary);
  border: 2px solid var(--glass-border);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.8rem;
  font-weight: 800;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
  animation: float 3s ease-in-out infinite;
}

.letter-box-3d.yellow {
  background: var(--accent-yellow);
  color: #0f172a;
  border-color: var(--accent-yellow);
}

.logo-animation span:nth-child(2) { animation-delay: 0.2s; }
.logo-animation span:nth-child(3) { animation-delay: 0.4s; }
.logo-animation span:nth-child(4) { animation-delay: 0.6s; }
.logo-animation span:nth-child(5) { animation-delay: 0.8s; }
.logo-animation span:nth-child(6) { animation-delay: 1.0s; }
.logo-animation span:nth-child(7) { animation-delay: 1.2s; }
.logo-animation span:nth-child(8) { animation-delay: 1.4s; }
.logo-animation span:nth-child(9) { animation-delay: 1.6s; }

.game-title {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: 2px;
  background: linear-gradient(135deg, #fff 0%, var(--accent-yellow) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 12px;
}

.game-subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 32px;
  padding: 0 20px;
}

.rules-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 32px;
  text-align: left;
}

.rules-card h3 {
  color: var(--accent-yellow);
  margin-bottom: 12px;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.rules-card ul {
  list-style: none;
}

.rules-card li {
  margin-bottom: 10px;
  font-size: 0.95rem;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Game Screen Styling */
.game-header {
  display: grid;
  grid-template-columns: 1fr 1.4fr 1fr 0.8fr;
  gap: 12px;
  margin-bottom: 20px;
}

.info-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: 16px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.card-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.card-value {
  font-size: 1.5rem;
  font-weight: 800;
  transition: var(--transition-smooth);
}

.score-card .card-value {
  color: var(--accent-green);
}

.timer-card {
  border-color: rgba(251, 191, 36, 0.2);
}

.timer-card .card-value {
  font-size: 1.8rem;
  color: var(--accent-yellow);
}

.timer-progress-bar {
  width: 80%;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  margin-top: 6px;
  overflow: hidden;
}

.timer-progress-fill {
  height: 100%;
  background: var(--accent-yellow);
  transition: width 1s linear;
}

.combo-card {
  transition: var(--transition-smooth);
}

.combo-card.active-combo {
  border-color: var(--accent-yellow);
  box-shadow: 0 0 15px rgba(251, 191, 36, 0.3);
  animation: pulse-combo 1.5s infinite;
}

.combo-card.active-combo .card-value {
  color: var(--accent-yellow);
  text-shadow: 0 0 8px rgba(251, 191, 36, 0.5);
}

/* Soru Paneli */
.question-container {
  margin-bottom: 24px;
  position: relative;
  padding-top: 36px;
}

.question-badge {
  position: absolute;
  top: 16px;
  left: 24px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  padding: 4px 10px;
  border-radius: 8px;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--accent-yellow);
}

.question-text {
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--text-main);
  text-align: center;
  min-height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Harf Kutuları Konteyneri */
.word-board {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 28px;
  perspective: 1000px;
}

/* 3D Harf Kutuları — 10 harf dar ekranda tek satıra sığacak şekilde ölçeklenir */
.letter-box {
  width: clamp(28px, 8.5vw, 54px);
  height: clamp(28px, 8.5vw, 54px);
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: default;
}

.letter-box.revealed {
  transform: rotateY(180deg);
}

.letter-face {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 12px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: clamp(1rem, 5vw, 1.8rem);
  font-weight: 800;
  text-transform: uppercase;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

/* Ön Yüz (Kapalı Hali) */
.letter-front {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, #0f172a 100%);
  border: 2px solid var(--accent-yellow);
  color: var(--accent-yellow);
  box-shadow: inset 0 0 10px rgba(251, 191, 36, 0.1);
}

/* Arka Yüz (Açık Hali) */
.letter-back {
  background: var(--accent-yellow);
  color: #0f172a;
  transform: rotateY(180deg);
  border: 2px solid var(--accent-yellow);
}

/* Doğru Bilinen Kutular */
.letter-box.correct .letter-back {
  background: var(--accent-green);
  border-color: var(--accent-green);
  color: white;
}

/* Kontroller */
.game-controls {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

#guess-form {
  display: flex;
  gap: 12px;
}

#guess-input {
  flex: 1;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 14px 20px;
  color: #fff;
  font-family: var(--font-family);
  font-size: 1.1rem;
  font-weight: 600;
  outline: none;
  transition: var(--transition-smooth);
}

#guess-input:focus {
  border-color: var(--accent-yellow);
  box-shadow: 0 0 10px rgba(251, 191, 36, 0.2);
}

#guess-input::placeholder {
  color: var(--text-muted);
}

.action-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* Game Over Screen */
.game-over-content {
  text-align: center;
}

.game-over-header {
  margin-bottom: 28px;
}

.skull-badge {
  font-size: 3rem;
  display: block;
  margin-bottom: 12px;
}

.game-over-content h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent-red);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 28px;
}

.stat-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.stat-value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent-yellow);
}

.summary-details {
  text-align: left;
  background: rgba(255, 255, 255, 0.01);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 16px;
  margin-bottom: 28px;
}

.summary-details h3 {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 8px;
}

.known-words-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  max-height: 120px;
  overflow-y: auto;
  padding-right: 4px;
}

.known-word-badge {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--accent-green);
  padding: 4px 10px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
}

/* Animations */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes pulse-combo {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.03); }
}

.pulse-animation {
  animation: pulse-button 2s infinite;
}

@keyframes pulse-button {
  0% { box-shadow: 0 0 0 0 rgba(251, 191, 36, 0.4); }
  70% { box-shadow: 0 0 0 15px rgba(251, 191, 36, 0); }
  100% { box-shadow: 0 0 0 0 rgba(251, 191, 36, 0); }
}

/* Shake Animation (Wrong Answer) */
.shake {
  animation: shake-anim 0.5s ease-in-out;
}

@keyframes shake-anim {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-6px); }
  20%, 40%, 60%, 80% { transform: translateX(6px); }
}

/* Correct Answer (Bounce Animation) */
.correct-bounce {
  animation: bounce-anim 0.5s ease-in-out;
}

@keyframes bounce-anim {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Scrollbar Customization */
.known-words-list::-webkit-scrollbar {
  width: 4px;
}

.known-words-list::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.02);
}

.known-words-list::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: 2px;
}

/* SEO içerik bölümü */
.seo-content {
  margin-top: 48px;
  padding: 24px;
  border-top: 1px solid var(--glass-border);
  color: var(--text-muted);
  font-size: 0.92rem;
  text-align: left;
}

.seo-content h2 {
  color: var(--text-main);
  font-size: 1.15rem;
  margin: 20px 0 8px;
}

.seo-content h3 {
  color: var(--text-main);
  font-size: 1rem;
  margin: 14px 0 4px;
}

.seo-content p,
.seo-content li {
  margin-bottom: 6px;
  line-height: 1.6;
}

.seo-content ol {
  padding-left: 20px;
}

/* Ses aç/kapa */
.sound-toggle {
  position: fixed;
  top: 14px;
  right: 14px;
  z-index: 50;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  width: 44px;
  height: 44px;
  font-size: 1.2rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.sound-toggle:hover {
  border-color: var(--accent-yellow);
}

.new-record {
  color: var(--accent-yellow);
  font-weight: 800;
  margin-top: 6px;
}

/* Mod seçim butonları */
.mode-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.mode-buttons .btn {
  min-width: 260px;
  min-height: 48px;
}

.install-btn {
  margin: 16px auto 0;
  display: flex;
}

.mode-status {
  text-align: center;
  margin-top: 12px;
}

/* Paylaşım kartı */
.share-preview {
  font-family: var(--font-family);
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  padding: 12px;
  font-size: 0.85rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  margin-bottom: 10px;
}

/* Skorboard */
#nickname-form {
  display: flex;
  gap: 10px;
}

#nickname-input {
  flex: 1;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  padding: 10px 14px;
  color: #fff;
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 600;
  outline: none;
}

#nickname-input:focus {
  border-color: var(--accent-yellow);
}

.submit-status {
  margin-top: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  min-height: 1.2em;
}

.lb-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.lb-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 8px;
}

.lb-tab {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  border-radius: 8px;
  padding: 5px 12px;
  font-family: var(--font-family);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.lb-tab.active {
  background: var(--accent-yellow);
  border-color: var(--accent-yellow);
  color: #0f172a;
}

.leaderboard-list {
  list-style: none;
  max-height: 220px;
  overflow-y: auto;
}

.lb-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 8px;
  border-radius: 8px;
  font-size: 0.95rem;
}

.lb-row:nth-child(odd) {
  background: rgba(255, 255, 255, 0.02);
}

.lb-row.me {
  border: 1px solid rgba(251, 191, 36, 0.4);
  background: rgba(251, 191, 36, 0.08);
}

.lb-rank {
  width: 2em;
  text-align: center;
  font-weight: 800;
  color: var(--text-muted);
}

.lb-nick {
  flex: 1;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lb-score {
  font-weight: 800;
  color: var(--accent-green);
}

/* Disabled buttons (joker eşiği vb.) */
.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

.warning-btn:disabled:hover {
  background: rgba(251, 191, 36, 0.15);
  color: var(--accent-yellow);
}

/* Uçan süre etiketi (+3sn / -3sn) */
.time-float {
  position: absolute;
  top: 8px;
  right: 10px;
  font-size: 0.95rem;
  font-weight: 800;
  pointer-events: none;
  animation: time-float-anim 0.9s ease-out forwards;
}

.time-float.bonus {
  color: var(--accent-green);
}

.time-float.penalty {
  color: var(--accent-red);
}

@keyframes time-float-anim {
  0% { opacity: 0; transform: translateY(6px); }
  20% { opacity: 1; }
  100% { opacity: 0; transform: translateY(-14px); }
}

/* Responsive adjustment */
@media (max-width: 480px) {
  .app-container {
    margin: 12px;
    min-height: auto;
  }
  .game-title {
    font-size: 2.2rem;
  }
  .game-header {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  .letter-box-3d {
    width: 32px;
    height: 32px;
    font-size: 1.2rem;
    border-radius: 8px;
  }
  .logo-animation {
    gap: 5px;
  }
  .word-board {
    gap: 5px;
  }
  #guess-form {
    flex-direction: column;
  }
  #guess-form .btn {
    min-height: 44px;
  }
  .glass-panel {
    padding: 16px;
  }
  .question-text {
    font-size: 1.05rem;
  }
  .sound-toggle {
    top: 8px;
    right: 8px;
  }
}