:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #13131a;
  --bg-card: #1a1a25;
  --bg-accent: #2a2a3d;
  --text-primary: #e8e6e3;
  --text-secondary: #a0a0b0;
  --text-muted: #6b6b80;
  --accent-primary: #f59e0b;
  --accent-secondary: #d97706;
  --accent-danger: #ef4444;
  --accent-success: #10b981;
  --accent-info: #3b82f6;
  --border-color: rgba(245, 158, 11, 0.2);
  --shadow-color: rgba(245, 158, 11, 0.15);
}

@font-face {
  font-family: 'Charter';
  src: local('Georgia'), local('Times New Roman'), serif;
}

@font-face {
  font-family: 'Source Sans';
  src: local('Arial'), local('Helvetica'), sans-serif;
}

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

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Source Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  background-image: 
    radial-gradient(circle at 15% 50%, rgba(245, 158, 11, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 85% 30%, rgba(239, 68, 68, 0.03) 0%, transparent 40%),
    linear-gradient(180deg, #0a0a0f 0%, #13131a 100%);
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

.haitang-soup-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
  position: relative;
  z-index: 1;
}

.haitang-header {
  text-align: center;
  margin-bottom: 3.5rem;
  position: relative;
}

.haitang-header::before {
  content: '⸻';
  position: absolute;
  top: -2rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--accent-primary);
  font-size: 2rem;
  letter-spacing: 0.5em;
  opacity: 0.6;
}

.haitang-logo {
  margin-bottom: 1.5rem;
  display: inline-block;
  animation: float 6s ease-in-out infinite;
}

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

.haitang-logo svg {
  width: 80px;
  height: 80px;
  filter: drop-shadow(0 0 20px rgba(245, 158, 11, 0.3));
}

.haitang-title {
  font-family: 'Charter', Georgia, serif;
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  margin: 0.5rem 0;
  font-weight: 700;
  letter-spacing: 0.05em;
  background: linear-gradient(135deg, var(--accent-primary) 0%, #fbbf24 50%, var(--accent-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  position: relative;
}

.haitang-title::after {
  content: 'TM';
  position: absolute;
  top: 0.2em;
  right: -1.5em;
  font-size: 0.3em;
  color: var(--accent-primary);
  opacity: 0.7;
}

.haitang-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin: 0;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 300;
}

.haitang-game-area {
  background: var(--bg-card);
  border-radius: 0;
  box-shadow: 
    0 0 60px var(--shadow-color),
    0 0 0 1px var(--border-color),
    inset 0 0 80px rgba(0, 0, 0, 0.4);
  overflow: hidden;
  position: relative;
  border: 1px solid var(--border-color);
}

.haitang-game-area::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
  opacity: 0.8;
}

.haitang-start-screen {
  padding: 4rem 3rem;
  animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.haitang-intro {
  text-align: center;
}

.haitang-intro h2 {
  font-family: 'Charter', Georgia, serif;
  font-size: 2rem;
  color: var(--text-primary);
  margin-bottom: 2.5rem;
  position: relative;
  display: inline-block;
}

.haitang-intro h2::before,
.haitang-intro h2::after {
  content: '—';
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent-primary);
  opacity: 0.6;
}

.haitang-intro h2::before {
  left: -2em;
}

.haitang-intro h2::after {
  right: -2em;
}

.haitang-rules {
  background: var(--bg-accent);
  padding: 2.5rem;
  border-radius: 0;
  margin-bottom: 3rem;
  text-align: left;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  border: 1px solid var(--border-color);
  position: relative;
}

.haitang-rules::before {
  content: 'CASE FILE';
  position: absolute;
  top: -0.7em;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  padding: 0 1em;
  color: var(--accent-primary);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  font-weight: 700;
}

.haitang-rules h3 {
  margin-top: 0;
  margin-bottom: 1.5rem;
  color: var(--accent-primary);
  font-size: 1.3rem;
  font-family: 'Charter', Georgia, serif;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-align: center;
}

.haitang-rules ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.haitang-rules li {
  padding: 0.75rem 0;
  padding-left: 2rem;
  position: relative;
  color: var(--text-secondary);
  font-size: 1rem;
  border-bottom: 1px solid rgba(245, 158, 11, 0.1);
  transition: all 0.3s ease;
}

.haitang-rules li:hover {
  color: var(--text-primary);
  padding-left: 2.5rem;
}

.haitang-rules li:last-child {
  border-bottom: none;
}

.haitang-rules li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent-primary);
  font-weight: bold;
  font-size: 1.2rem;
}

.haitang-rules li strong {
  color: var(--accent-primary);
  font-weight: 600;
}

.badge-yes,
.badge-no,
.badge-irrelevant {
  display: inline-block;
  padding: 0.25em 0.75em;
  border-radius: 0;
  font-size: 0.85em;
  font-weight: 600;
  margin: 0 0.25em;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.badge-yes {
  background: rgba(16, 185, 129, 0.2);
  color: var(--accent-success);
  border: 1px solid var(--accent-success);
}

.badge-no {
  background: rgba(239, 68, 68, 0.2);
  color: var(--accent-danger);
  border: 1px solid var(--accent-danger);
}

.badge-irrelevant {
  background: rgba(107, 114, 128, 0.2);
  color: var(--text-muted);
  border: 1px solid var(--text-muted);
}

#player-name-input {
  width: 100%;
  max-width: 400px;
  padding: 1rem 1.5rem;
  margin: 0 auto 2rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all 0.3s ease;
  text-align: center;
}

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

#player-name-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 20px rgba(245, 158, 11, 0.2);
}

.haitang-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.haitang-game-screen {
  padding: 2.5rem;
  animation: fadeIn 0.5s ease-out;
}

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

.haitang-story-card {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, transparent 100%);
  padding: 2.5rem;
  border-radius: 0;
  margin-bottom: 2.5rem;
  color: var(--text-primary);
  box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  position: relative;
}

.haitang-story-card::before {
  content: '〝';
  position: absolute;
  top: 1rem;
  left: 1.5rem;
  font-size: 4rem;
  color: var(--accent-primary);
  opacity: 0.2;
  font-family: Georgia, serif;
  line-height: 1;
}

.haitang-story-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.haitang-puzzle-title {
  font-family: 'Charter', Georgia, serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-primary);
  letter-spacing: 0.05em;
}

.haitang-puzzle-id {
  background: rgba(245, 158, 11, 0.1);
  padding: 0.4rem 1rem;
  border-radius: 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: 0.1em;
  border: 1px solid var(--border-color);
}

.haitang-story-content p {
  font-size: 1.2rem;
  line-height: 2;
  margin: 0;
  color: var(--text-primary);
  font-family: 'Charter', Georgia, serif;
  font-weight: 300;
  letter-spacing: 0.02em;
}

.haitang-interaction-area {
  margin-bottom: 2.5rem;
}

.haitang-question-section {
  margin-bottom: 1.5rem;
}

.haitang-question-tip {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 1rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.haitang-input-group {
  display: flex;
  gap: 0.75rem;
}

.haitang-input-group .form-control {
  flex: 1;
  padding: 1rem 1.5rem;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all 0.3s ease;
  border-radius: 0;
}

.haitang-input-group .form-control:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1);
  background: var(--bg-card);
}

.haitang-input-group .form-control::placeholder {
  color: var(--text-muted);
}

.haitang-tools {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.haitang-conversation {
  background: var(--bg-secondary);
  border-radius: 0;
  padding: 2rem;
  max-height: 450px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  position: relative;
}

.haitang-conversation::-webkit-scrollbar {
  width: 6px;
}

.haitang-conversation::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

.haitang-conversation::-webkit-scrollbar-thumb {
  background: var(--accent-primary);
  opacity: 0.5;
}

.haitang-conversation-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.haitang-question-count {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.haitang-messages {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.haitang-system-message {
  text-align: center;
  color: var(--text-muted);
  font-style: italic;
  padding: 1.5rem;
  background: rgba(245, 158, 11, 0.05);
  border-radius: 0;
  font-size: 0.95rem;
  border: 1px dashed var(--border-color);
}

.haitang-user-message,
.haitang-bot-message,
.haitang-hint-message {
  animation: slideIn 0.4s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.haitang-user-message {
  animation-delay: 0s;
}

.haitang-bot-message {
  animation-delay: 0.1s;
}

.haitang-user-message .message-content {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.2) 0%, rgba(245, 158, 11, 0.1) 100%);
  color: var(--text-primary);
  padding: 1.25rem 1.5rem;
  border-radius: 0;
  max-width: 85%;
  margin-left: auto;
  border: 1px solid var(--border-color);
  border-right: 3px solid var(--accent-primary);
}

.haitang-bot-message .message-content {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: var(--bg-card);
  color: var(--text-primary);
  padding: 1.25rem 1.5rem;
  border-radius: 0;
  max-width: 85%;
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-left: 3px solid var(--accent-danger);
  position: relative;
}

.haitang-bot-message .message-content::before {
  content: 'DETECTIVE';
  position: absolute;
  top: -0.6em;
  left: 1rem;
  background: var(--bg-card);
  padding: 0 0.5em;
  color: var(--accent-danger);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  font-weight: 700;
}

.haitang-hint-message .message-content {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.15) 0%, rgba(245, 158, 11, 0.05) 100%);
  padding: 1.25rem 1.5rem;
  border-radius: 0;
  max-width: 90%;
  border: 1px solid var(--accent-primary);
  border-left: 3px solid var(--accent-primary);
}

.message-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  line-height: 1.4;
}

.message-text {
  line-height: 1.7;
  font-size: 1rem;
}

.answer-yes {
  border-left-color: var(--accent-success) !important;
  border-color: rgba(16, 185, 129, 0.3) !important;
}

.answer-yes::before {
  color: var(--accent-success) !important;
}

.answer-no {
  border-left-color: var(--accent-danger) !important;
  border-color: rgba(239, 68, 68, 0.3) !important;
}

.answer-no::before {
  color: var(--accent-danger) !important;
}

.answer-irrelevant {
  border-left-color: var(--text-muted) !important;
  border-color: rgba(107, 114, 128, 0.3) !important;
}

.answer-irrelevant::before {
  color: var(--text-muted) !important;
}

.hint-content p {
  margin: 0.5rem 0;
}

.hint-keyword {
  font-weight: 700;
  color: var(--accent-primary);
  font-size: 1.05rem;
  letter-spacing: 0.05em;
}

.hint-implication {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.haitang-answer-submit-section {
  margin-bottom: 2rem;
}

.haitang-answer-input-area {
  background: var(--bg-accent);
  padding: 1.5rem;
  border-radius: 0;
  border: 1px solid var(--border-color);
  animation: pulseBorder 2s ease-in-out infinite;
}

@keyframes pulseBorder {
  0%, 100% { border-color: var(--border-color); }
  50% { border-color: rgba(245, 158, 11, 0.5); }
}

.haitang-answer-input-area h4 {
  margin-top: 0;
  margin-bottom: 1rem;
  color: var(--accent-primary);
  font-family: 'Charter', Georgia, serif;
  font-weight: 600;
}

.haitang-answer-section {
  margin-top: 2.5rem;
  padding-top: 2.5rem;
  border-top: 2px solid var(--border-color);
}

.haitang-answer-card {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(22, 163, 74, 0.05) 100%);
  padding: 3rem;
  border-radius: 0;
  color: var(--text-primary);
  text-align: center;
  border: 1px solid rgba(16, 185, 129, 0.3);
  position: relative;
  animation: successGlow 2s ease-in-out infinite alternate;
}

@keyframes successGlow {
  from { box-shadow: 0 0 20px rgba(16, 185, 129, 0.1); }
  to { box-shadow: 0 0 40px rgba(16, 185, 129, 0.2); }
}

.haitang-answer-card::before {
  content: 'CASE CLOSED';
  position: absolute;
  top: -0.7em;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  padding: 0 1em;
  color: var(--accent-success);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  font-weight: 700;
}

.haitang-answer-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.haitang-answer-header h3 {
  margin: 0;
  font-size: 2rem;
  font-family: 'Charter', Georgia, serif;
  color: var(--accent-success);
}

.haitang-answer-content {
  background: rgba(0, 0, 0, 0.2);
  padding: 2rem;
  border-radius: 0;
  margin-bottom: 2rem;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.haitang-answer-content p {
  margin: 0;
  font-size: 1.3rem;
  line-height: 1.9;
  font-family: 'Charter', Georgia, serif;
}

.haitang-explanation {
  background: rgba(0, 0, 0, 0.15);
  padding: 2rem;
  border-radius: 0;
  text-align: left;
  margin-bottom: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.haitang-explanation h4 {
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: 1.2rem;
  color: var(--accent-success);
  font-family: 'Charter', Georgia, serif;
  letter-spacing: 0.05em;
}

.haitang-explanation p {
  margin: 0;
  line-height: 1.9;
  font-size: 1rem;
  color: var(--text-secondary);
}

.haitang-notification {
  position: fixed;
  top: 2rem;
  right: 2rem;
  padding: 1.25rem 2rem;
  border-radius: 0;
  color: white;
  font-weight: 500;
  z-index: 9999;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
  animation: slideInRight 0.4s ease-out;
  border-left: 4px solid;
  backdrop-filter: blur(10px);
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.notification-success {
  background: rgba(16, 185, 129, 0.95);
  border-left-color: #059669;
}

.notification-error {
  background: rgba(239, 68, 68, 0.95);
  border-left-color: #dc2626;
}

.notification-warning {
  background: rgba(245, 158, 11, 0.95);
  border-left-color: #d97706;
}

.notification-info {
  background: rgba(59, 130, 246, 0.95);
  border-left-color: #2563eb;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border: 1px solid;
  border-radius: 0;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.9rem;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn:disabled::before {
  display: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
  color: #000;
  border-color: var(--accent-primary);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #fbbf24 0%, var(--accent-primary) 100%);
}

.btn-success {
  background: linear-gradient(135deg, var(--accent-success) 0%, #059669 100%);
  color: white;
  border-color: var(--accent-success);
}

.btn-success:hover {
  background: linear-gradient(135deg, #34d399 0%, var(--accent-success) 100%);
}

.btn-outline-warning {
  background: transparent;
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.btn-outline-warning:hover {
  background: var(--accent-primary);
  color: #000;
}

.btn-outline-danger {
  background: transparent;
  border-color: var(--accent-danger);
  color: var(--accent-danger);
}

.btn-outline-danger:hover {
  background: var(--accent-danger);
  color: white;
}

.btn-secondary {
  background: var(--bg-accent);
  color: var(--text-secondary);
  border-color: var(--border-color);
}

.btn-outline-info {
  background: transparent;
  border-color: var(--accent-info);
  color: var(--accent-info);
}

.btn-outline-info:hover {
  background: var(--accent-info);
  color: white;
}

.btn-info {
  background: linear-gradient(135deg, var(--accent-info) 0%, #2563eb 100%);
  color: white;
  border-color: var(--accent-info);
}

.btn-lg {
  padding: 1.25rem 2.5rem;
  font-size: 1rem;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.btn-outline-dark {
  background: transparent;
  border: 1px solid var(--text-muted);
  color: var(--text-secondary);
}

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

.haitang-post-answer-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.haitang-quick-questions {
  margin-top: 1rem;
  padding: 1.25rem;
  background: rgba(245, 158, 11, 0.05);
  border-radius: 0;
  border: 1px dashed var(--border-color);
}

.quick-question-tips {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.quick-question-buttons {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.quick-question-btn {
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
  transition: all 0.2s ease;
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: 0;
}

.quick-question-btn:hover {
  transform: translateY(-1px);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.response-time {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-left: auto;
  font-style: italic;
  opacity: 0.7;
}

.loading {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.loading::before {
  content: '';
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

@media (max-width: 768px) {
  .haitang-soup-container {
    padding: 2rem 1rem;
  }

  .haitang-title {
    font-size: 2rem;
  }

  .haitang-start-screen {
    padding: 2.5rem 1.5rem;
  }

  .haitang-game-screen {
    padding: 1.5rem;
  }

  .haitang-input-group {
    flex-direction: column;
  }

  .haitang-tools {
    flex-direction: column;
  }

  .haitang-tools .btn {
    width: 100%;
    justify-content: center;
  }

  .haitang-story-card {
    padding: 1.5rem;
  }

  .haitang-puzzle-title {
    font-size: 1.2rem;
  }

  .haitang-story-content p {
    font-size: 1.05rem;
  }

  .haitang-conversation {
    max-height: 350px;
    padding: 1.25rem;
  }

  .haitang-notification {
    left: 1rem;
    right: 1rem;
    font-size: 0.9rem;
  }

  .haitang-rules {
    padding: 2rem 1.5rem;
  }

  .haitang-answer-card {
    padding: 2rem 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .haitang-user-message,
  .haitang-bot-message,
  .haitang-hint-message,
  .haitang-notification,
  .haitang-start-screen {
    animation: none;
  }

  .btn:hover {
    transform: none;
  }

  .loading::before {
    animation: none;
  }

  .haitang-logo {
    animation: none;
  }
}