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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary: #64748b;
  --accent: #10b981;
  --success: #059669;
  --warning: #d97706;
  --error: #dc2626;

  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1),
    0 4px 6px -4px rgb(0 0 0 / 0.1);

  --font-sans: system-ui, -apple-system, "Segoe UI", "Roboto", sans-serif;
  --font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas,
    "Courier New", monospace;
}

[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --border: #334155;
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.3), 0 1px 2px -1px rgb(0 0 0 / 0.3);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3),
    0 4px 6px -4px rgb(0 0 0 / 0.3);
}

body {
  font-family: var(--font-sans);
  background: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.chat-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: 1200px;
  margin: 0 auto;
  background: var(--bg-primary);
  box-shadow: var(--shadow-lg);
}

.chat-header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.bot-avatar {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin-right: 1rem;
}

.header-info h1 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.header-info p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.theme-toggle {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text-secondary);
}

.theme-toggle:hover {
  background: var(--border);
  transform: translateY(-1px);
}

[data-theme="dark"] .sun-icon {
  display: none;
}

[data-theme="light"] .moon-icon {
  display: none;
}

.result-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
  font-size: 14px;
}

.result-table th,
.result-table td {
  border: 1px solid #333; /* 👈 visible border */
  padding: 6px 10px;
  text-align: left;
}

.result-table th {
  background-color: #6d6d6d;
  font-weight: bold;
}
.feedback-buttons {
  margin-top: 0.5rem;
  display: flex;
  gap: 0.5rem;
}

.thumb-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  padding: 0.25rem 0.5rem;
  transition: all 0.2s ease;
}

.thumb-btn.up:hover {
  background: var(--success);
  color: #fff;
}

.thumb-btn.down:hover {
  background: var(--error);
  color: #fff;
}

.thanks {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.download-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
  padding: 0.25rem 0.5rem;
  margin-top: 0.5rem;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.download-btn:hover {
  background: var(--primary);
  color: white;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  scroll-behavior: smooth;
}

.message {
  margin-bottom: 1.5rem;
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.user-message {
  display: flex;
  justify-content: flex-end;
}

.bot-message {
  display: flex;
  justify-content: flex-start;
}

.message-content {
  max-width: 75%;
  padding: 1rem 1.25rem;
  border-radius: 1rem;
  position: relative;
  word-wrap: break-word;
}

.user-message .message-content {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border-bottom-right-radius: 4px;
}

.bot-message .message-content {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-bottom-left-radius: 4px;
  border: 1px solid var(--border);
}

.message-content p {
  margin-bottom: 0.75rem;
}

.message-content p:last-child {
  margin-bottom: 0;
}

.message-content ul {
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
}

.message-content li {
  margin-bottom: 0.25rem;
}

.sql-block {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin: 1rem 0;
  overflow: hidden;
}

.sql-header {
  background: var(--bg-tertiary);
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 0.75rem;
  transition: all 0.2s ease;
}

.copy-btn:hover {
  background: var(--border);
  color: var(--text-primary);
}

.sql-content {
  padding: 0;
  margin: 0;
}

.sql-content pre {
  margin: 0;
  padding: 1rem;
  background: transparent !important;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.5;
  overflow-x: auto;
}

.typing-indicator {
  display: none;
  padding: 1rem 1.5rem;
  align-items: center;
  gap: 0.75rem;
}

.typing-indicator.show {
  display: flex;
}

.typing-dots {
  display: flex;
  gap: 0.25rem;
}

.typing-dots span {
  width: 8px;
  height: 8px;
  background: var(--text-muted);
  border-radius: 50%;
  animation: bounce 1.4s ease-in-out infinite both;
}

.typing-dots span:nth-child(1) {
  animation-delay: -0.32s;
}
.typing-dots span:nth-child(2) {
  animation-delay: -0.16s;
}

@keyframes bounce {
  0%,
  80%,
  100% {
    transform: scale(0);
  }
  40% {
    transform: scale(1);
  }
}

.typing-text {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.chat-input-container {
  padding: 1.5rem;
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
}

.input-wrapper {
  display: flex;
  align-items: flex-end;
  gap: 0.75rem;
  background: var(--bg-secondary);
  /* border: 2px solid var(--border); */
  border-radius: 1rem;
  padding: 0.75rem 1rem;
  transition: border-color 0.2s ease;
}

.input-wrapper:focus-within {
  background: var(--border);
}

#messageInput {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  resize: none;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 1.5rem;
  max-height: 8rem;
}

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

.input-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.sql-format-btn,
.send-btn {
  background: transparent;
  border: none;
  padding: 0.5rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sql-format-btn {
  color: var(--text-muted);
}

.sql-format-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.send-btn {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
}

.send-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.send-btn:disabled {
  background: var(--text-muted);
  cursor: not-allowed;
  transform: none;
}

.character-count {
  text-align: right;
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .chat-container {
    height: 100vh;
    border-radius: 0;
  }

  .header-content {
    padding: 0;
  }

  .header-info h1 {
    font-size: 1.125rem;
  }

  .message-content {
    max-width: 85%;
  }

  .chat-messages {
    padding: 1rem;
  }

  .chat-input-container {
    padding: 1rem;
  }

  .input-wrapper {
    padding: 0.5rem 0.75rem;
  }
}

@media (max-width: 480px) {
  .message-content {
    max-width: 90%;
    padding: 0.875rem 1rem;
  }

  .bot-avatar {
    width: 40px;
    height: 40px;
    margin-right: 0.75rem;
  }

  .header-info h1 {
    font-size: 1rem;
  }

  .header-info p {
    font-size: 0.8rem;
  }
}

/* Scrollbar styling */
.chat-messages::-webkit-scrollbar {
  width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

.chat-messages::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Code syntax highlighting adjustments for dark theme */
[data-theme="dark"] .token.comment,
[data-theme="dark"] .token.prolog,
[data-theme="dark"] .token.doctype,
[data-theme="dark"] .token.cdata {
  color: #64748b;
}

[data-theme="dark"] .token.punctuation {
  color: #cbd5e1;
}

[data-theme="dark"] .token.property,
[data-theme="dark"] .token.tag,
[data-theme="dark"] .token.boolean,
[data-theme="dark"] .token.number,
[data-theme="dark"] .token.constant,
[data-theme="dark"] .token.symbol,
[data-theme="dark"] .token.deleted {
  color: #f87171;
}

[data-theme="dark"] .token.selector,
[data-theme="dark"] .token.attr-name,
[data-theme="dark"] .token.string,
[data-theme="dark"] .token.char,
[data-theme="dark"] .token.builtin,
[data-theme="dark"] .token.inserted {
  color: #34d399;
}

[data-theme="dark"] .token.operator,
[data-theme="dark"] .token.entity,
[data-theme="dark"] .token.url,
[data-theme="dark"] .language-css .token.string,
[data-theme="dark"] .style .token.string {
  color: #60a5fa;
}

[data-theme="dark"] .token.atrule,
[data-theme="dark"] .token.attr-value,
[data-theme="dark"] .token.keyword {
  color: #a78bfa;
}

[data-theme="dark"] .token.function,
[data-theme="dark"] .token.class-name {
  color: #fbbf24;
}