src/app/globals.css

@tailwind base;
@tailwind components;
@tailwind utilities;

:root {
  --background: #09090b;
  --foreground: #fafafa;
  --muted: #18181b;
  --muted-foreground: #a1a1aa;
  --border: #27272a;
  --card: #18181b;
  --card-foreground: #fafafa;
  --accent: #ff4c00;
  --accent-hover: #ff6a2a;
  --accent-light: rgba(255, 76, 0, 0.15);
  --primary: #ff4c00;
  --primary-foreground: #ffffff;
  --secondary: #18181b;
  --secondary-foreground: #fafafa;
  --destructive: #ef4444;
  --destructive-foreground: #ffffff;
  --input: #27272a;
  --ring: #ff4c00;
  --radius: 0.75rem;
}

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

html {
  scroll-behavior: smooth;
}

html,
body {
  height: 100%;
  max-width: 100vw;
  overflow-x: hidden;
}

body {
  color: var(--foreground);
  background: var(--background);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: #3f3f46;
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: #52525b;
}

::selection {
  background: var(--accent-light);
  color: var(--foreground);
}

:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bounce-dot {

  0%,
  80%,
  100% {
    transform: scale(0);
  }

  40% {
    transform: scale(1);
  }
}

.animate-fade-in {
  animation: fadeIn 0.2s ease-out;
}

.animate-slide-in {
  animation: slideIn 0.3s ease-out;
}

.dot-1 {
  animation: bounce-dot 1.4s infinite ease-in-out both;
  animation-delay: -0.32s;
}

.dot-2 {
  animation: bounce-dot 1.4s infinite ease-in-out both;
  animation-delay: -0.16s;
}

.dot-3 {
  animation: bounce-dot 1.4s infinite ease-in-out both;
}

.input-container {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.input-container:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.user-message {
  background: var(--accent);
  color: var(--primary-foreground);
}

.markdown-content {
  font-size: 15px;
  line-height: 1.7;
  color: var(--foreground);
}

.markdown-content>*:first-child {
  margin-top: 0;
}

.markdown-content>*:last-child {
  margin-bottom: 0;
}

.markdown-content p {
  margin: 0 0 1em 0;
}

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

.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4 {
  font-weight: 600;
  line-height: 1.3;
  margin: 1.5em 0 0.5em 0;
  color: var(--foreground);
}

.markdown-content h1:first-child,
.markdown-content h2:first-child,
.markdown-content h3:first-child,
.markdown-content h4:first-child {
  margin-top: 0;
}

.markdown-content h1 {
  font-size: 1.5em;
}

.markdown-content h2 {
  font-size: 1.25em;
}

.markdown-content h3 {
  font-size: 1.1em;
}

.markdown-content h4 {
  font-size: 1em;
}

.markdown-content ul,
.markdown-content ol {
  margin: 0.75em 0;
  padding-left: 1.5em;
  list-style-position: outside;
}

.markdown-content ul {
  list-style-type: disc;
}

.markdown-content ol {
  list-style-type: decimal;
}

.markdown-content li {
  margin: 0.35em 0;
}

.markdown-content li>ul,
.markdown-content li>ol {
  margin: 0.25em 0;
}

.markdown-content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s;
}

.markdown-content a:hover {
  border-bottom-color: var(--accent);
}

.markdown-content strong {
  font-weight: 600;
}

.markdown-content em {
  font-style: italic;
}

.markdown-content blockquote {
  margin: 1em 0;
  padding: 0.5em 0 0.5em 1em;
  border-left: 3px solid var(--accent);
  color: var(--muted-foreground);
  font-style: italic;
}

.markdown-content hr {
  margin: 1.5em 0;
  border: none;
  border-top: 1px solid var(--border);
}

.markdown-content .code-block {
  margin: 1em 0;
  padding: 1em;
  background: var(--muted);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco, Consolas, monospace;
  font-size: 0.875em;
  line-height: 1.5;
}

.markdown-content .inline-code {
  padding: 0.15em 0.4em;
  background: var(--muted);
  border-radius: 4px;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco, Consolas, monospace;
  font-size: 0.9em;
}

.markdown-content .table-wrapper {
  margin: 1em 0;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.markdown-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9em;
}

.markdown-content thead {
  background: var(--muted);
}

.markdown-content th {
  padding: 0.75em 1em;
  text-align: left;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
}

.markdown-content td {
  padding: 0.75em 1em;
  border-bottom: 1px solid var(--border);
}

.markdown-content tbody tr:last-child td {
  border-bottom: none;
}

.markdown-content tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.thinking-block {
  margin: 0.5em 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.thinking-header {
  display: flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.625em 0.875em;
  background: var(--muted);
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
  font-size: 0.875em;
  color: var(--muted-foreground);
  transition: background 0.15s;
}

.thinking-header:hover {
  background: #27272a;
}

.thinking-content {
  padding: 0.875em;
  font-size: 0.875em;
  color: var(--muted-foreground);
  line-height: 1.6;
  border-top: 1px solid var(--border);
  background: var(--background);
}

.tool-block {
  margin: 0.5em 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.tool-header {
  display: flex;
  align-items: center;
  gap: 0.625em;
  padding: 0.625em 0.875em;
  background: var(--muted);
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
  font-size: 0.875em;
}

.tool-header:hover {
  background: #27272a;
}

.tool-content {
  padding: 0.875em;
  font-size: 0.8125em;
  color: var(--muted-foreground);
  line-height: 1.5;
  white-space: pre-wrap;
  border-top: 1px solid var(--border);
  max-height: 200px;
  overflow-y: auto;
  background: var(--background);
}