/* ==================== CSS Variables ==================== */
:root {
  /* 主色调 */
  --primary-dark: #0f172a;
  --primary-blue: #3b82f6;
  --secondary-purple: #8b5cf6;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --accent-orange: #f59e0b;
  
  /* 背景色 */
  --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
  --card-bg: rgba(255, 255, 255, 0.05);
  --card-bg-hover: rgba(255, 255, 255, 0.08);
  
  /* 文字色 */
  --text-light: #f8fafc;
  --text-gray: #cbd5e1;
  --text-dark: #1e293b;
  
  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.3);
  
  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* 过渡 */
  --transition: all 0.3s ease;
}

/* ==================== Reset & Base ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: var(--bg-gradient);
  color: var(--text-light);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  overflow-x: hidden;
}

/* ==================== Game Wrapper ==================== */
.game-wrapper {
  width: 100%;
  max-width: 1200px;
  animation: fadeIn 0.5s ease;
}

/* ==================== Header ==================== */
.game-header {
  text-align: center;
  margin-bottom: 2rem;
}

.title-section {
  margin-bottom: 2rem;
}

.game-title {
  font-size: 3rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 0.5rem;
  animation: float 3s ease-in-out infinite;
}

.game-title .icon {
  font-size: 3.5rem;
  display: inline-block;
}

/* Author: SinceraXY | China University of Petroleum, Beijing */

.game-title .title-text {
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.game-subtitle {
  font-size: 1.1rem;
  color: var(--text-gray);
  letter-spacing: 0.05em;
}

/* 统计面板 */
.stats-panel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  max-width: 600px;
  margin: 0 auto;
}

.stat-item {
  background: var(--card-bg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.stat-item:hover {
  background: var(--card-bg-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.stat-icon {
  font-size: 2rem;
}

.stat-content {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-gray);
  margin-bottom: 0.25rem;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-light);
}

/* ==================== Game Main ==================== */
.game-main {
  margin-bottom: 2rem;
}

.game-container {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 2rem;
  background: var(--card-bg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 2rem;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-lg);
}

/* ==================== Hangman Figure ==================== */
.hangman-figure {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.figure-container {
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

.structure {
  stroke: var(--text-gray);
  stroke-width: 4;
  stroke-linecap: round;
}

.figure-part {
  fill: none;
  stroke: var(--accent-red);
  stroke-width: 4;
  stroke-linecap: round;
  display: none;
  animation: drawPart 0.3s ease;
}

.figure-part.show {
  display: block;
}

/* 剩余机会 */
.remaining-chances {
  background: rgba(239, 68, 68, 0.1);
  border: 2px solid var(--accent-red);
  border-radius: var(--radius-md);
  padding: 0.75rem 1.5rem;
  text-align: center;
}

.chances-label {
  color: var(--text-gray);
  font-size: 0.9rem;
  margin-right: 0.5rem;
}

.chances-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-red);
}

/* ==================== Game Info ==================== */
.game-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.section-title {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* 错误字母 */
.wrong-letters-section {
  background: rgba(239, 68, 68, 0.05);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.wrong-letters-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  min-height: 40px;
}

.wrong-letter {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  color: white;
  font-size: 1.2rem;
  font-weight: 700;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  animation: popIn 0.3s ease;
  text-transform: uppercase;
}

/* 单词显示 */
.word-section {
  background: rgba(59, 130, 246, 0.05);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.word-display {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.letter {
  width: 50px;
  height: 60px;
  border-bottom: 4px solid var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
  text-transform: uppercase;
  transition: var(--transition);
}

.letter.revealed {
  animation: revealLetter 0.4s ease;
  color: var(--accent-green);
}

.word-hint {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-gray);
  font-size: 0.9rem;
}

.hint-icon {
  font-size: 1.2rem;
}

/* 已猜字母 */
.guessed-letters-section {
  background: rgba(16, 185, 129, 0.05);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.guessed-letters-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  min-height: 40px;
}

.guessed-letter {
  background: linear-gradient(135deg, #10b981, #059669);
  color: white;
  font-size: 1.2rem;
  font-weight: 700;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  animation: popIn 0.3s ease;
  text-transform: uppercase;
}

.empty-hint {
  color: var(--text-gray);
  font-size: 0.9rem;
  font-style: italic;
  opacity: 0.6;
}

/* ==================== Controls ==================== */
.controls {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.control-btn {
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
  color: white;
  border: none;
  border-radius: var(--radius-md);
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
}

.control-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.control-btn:active {
  transform: translateY(-1px);
}

.control-btn svg {
  width: 20px;
  height: 20px;
}

/* ==================== Modal ==================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.modal-overlay.show {
  display: flex;
  animation: fadeIn 0.3s ease;
}

.modal {
  background: linear-gradient(135deg, #1e293b, #334155);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  max-width: 500px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.4s ease;
  position: relative;
}

.modal-header {
  padding: 2rem 2rem 1rem;
  text-align: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-title {
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.modal-body {
  padding: 2rem;
}

.result-icon {
  font-size: 5rem;
  text-align: center;
  margin-bottom: 1rem;
}

.reveal-word {
  text-align: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-green);
  margin-bottom: 1.5rem;
}

.game-stats {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  padding: 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
}

.stat-row span:last-child {
  font-weight: 700;
  color: var(--primary-blue);
}

.modal-footer {
  padding: 1rem 2rem 2rem;
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.modal-btn {
  background: var(--card-bg);
  color: var(--text-light);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.modal-btn.primary {
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
  border: none;
}

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

.modal-btn svg {

/* Contact: 2952671670@qq.com */

  width: 20px;
  height: 20px;
}

.close-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  font-size: 1.5rem;
  color: var(--text-light);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.close-btn:hover {
  background: rgba(255, 255, 255, 0.2);
/* Author: SinceraXY */
  transform: rotate(90deg);
}

/* 设置模态框 */
.settings-modal {
  max-width: 400px;
}

.setting-group {
  margin-bottom: 1.5rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.setting-group.highlighted {
  background: rgba(59, 130, 246, 0.1);
  border: 2px solid rgba(59, 130, 246, 0.3);
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.2);
}

.setting-label {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 1rem;
  color: var(--text-gray);
}

.setting-label .label-text {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.setting-select {
  background: rgba(15, 23, 42, 0.6);
  color: var(--text-light);
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  font-size: 1.05rem;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
}

.setting-select:hover {
  border-color: var(--primary-blue);
  background: rgba(15, 23, 42, 0.8);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

/* SinceraXY @ China University of Petroleum, Beijing */

.setting-select:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2);
  background: rgba(15, 23, 42, 0.9);
}

.setting-select option {
  background: #1e293b;
  padding: 0.75rem;
  font-size: 1rem;
}

.setting-checkbox {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.setting-checkbox:hover {
  background: rgba(255, 255, 255, 0.05);
}

.setting-checkbox input[type="checkbox"] {
  width: 24px;
  height: 24px;
  cursor: pointer;
  accent-color: var(--primary-blue);
}

.setting-checkbox span {
  font-size: 1.05rem;
  font-weight: 500;
}

/* ==================== Notification ==================== */
.notification {
  position: fixed;
  bottom: -100px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.9);
  color: white;
  padding: 1rem 2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
  z-index: 2000;
}

.notification.show {
  bottom: 2rem;
}

.notification p {
  margin: 0;
  font-size: 1rem;
}

/* ==================== Animations ==================== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes popIn {
  0% {
    opacity: 0;
    transform: scale(0.5);
  }
  60% {
    transform: scale(1.1);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}
/* Developer: SinceraXY - CUPB */

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

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes drawPart {
  from {
    opacity: 0;
    stroke-dasharray: 100;
/* Email: 2952671670@qq.com */
    stroke-dashoffset: 100;
  }
  to {
    opacity: 1;
    stroke-dasharray: 100;
    stroke-dashoffset: 0;
  }
}

@keyframes revealLetter {
  0% {
    transform: scale(0) rotate(-180deg);
    opacity: 0;
  }
  50% {
    transform: scale(1.2) rotate(10deg);
  }
  100% {
    transform: scale(1) rotate(0);
    opacity: 1;
  }
}

/* ==================== Responsive Design ==================== */
@media (max-width: 968px) {
  .game-container {
    grid-template-columns: 1fr;
  }
  
  .hangman-figure {
    order: -1;
  }

/* GameHub Project - https://github.com/nilgpt2024/web-game */
}

@media (max-width: 768px) {
  .game-title {
    font-size: 2rem;
  }
  
  .game-title .icon {
    font-size: 2.5rem;
  }
  
  .stats-panel {
    grid-template-columns: 1fr;
  }
  
  .letter {
    width: 40px;
    height: 50px;
    font-size: 1.5rem;
  }
  
  .control-btn {
    font-size: 0.9rem;
    padding: 0.6rem 1.2rem;
  }
}

@media (max-width: 480px) {
  body {
    padding: 1rem 0.5rem;
  }
  
  .game-container {
    padding: 1rem;
  }
  
  .modal {
    margin: 0.5rem;
  }
  
  .letter {
    width: 35px;
    height: 45px;
    font-size: 1.3rem;
  }
}