/* style.css */

:root {
  --primary: #f97316;
  --primary-dark: #ea580c;
  --bg-dark: #0f172a;
  --bg-darker: #020617;
  --bg-light: #ffffff;
  --bg-lighter: #f8fafc;
  --text-dark: #f1f5f9;
  --text-light: #1e293b;
  --border-dark: #334155;
  --border-light: #e2e8f0;
  --success: #10b981;
}


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

html, body {
  height: 100%;
}

body {
  background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
  color: var(--text-dark);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.light-mode {
  background: linear-gradient(135deg, var(--bg-lighter) 0%, var(--bg-light) 100%);
  color: var(--text-light);
}


header {
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-dark);
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

body.light-mode header {
  background: rgba(255, 255, 255, 0.8);
  border-bottom: 1px solid var(--border-light);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.875rem;
  font-weight: 600;
}


.logo-title {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-dark);
  transition: color 0.3s ease;
}

.logo-subtitle {
  font-size: 0.75rem;
  opacity: 0.8;
  color: var(--text-dark);
  transition: color 0.3s ease;
}

body.light-mode .logo-title,
body.light-mode .logo-subtitle {
  color: var(--text-light);
}

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


.icon-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  color: inherit;
  padding: 0.5rem;
  border-radius: 8px;
  transition: all 0.18s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  min-width: 40px;
  min-height: 40px;
  text-decoration: none;
}

.icon-btn i {
  font-size: 1.125rem;
  line-height: 1;
  display: block;
  color: currentColor;
}

body.light-mode .icon-btn {
  background: rgba(0, 0, 0, 0.03);
  border: 1px solid var(--border-light);
  color: var(--text-light);
}

.icon-btn:hover, .icon-btn:focus {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
  transform: translateY(-1px);
  outline: none;
}


.chat-container {
  max-width: 800px;
  margin: 0 auto;
  height: calc(100vh - 120px);
  display: flex;
  flex-direction: column;
  background: transparent;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}


.message {
  max-width: 85%;
  padding: 1rem 1.25rem;
  border-radius: 1.25rem;
  margin: 0.25rem 0;
  word-wrap: break-word;
  line-height: 1.6;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s ease;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.message.visible {
  opacity: 1;
  transform: translateY(0);
}

.user-message {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border-bottom-right-radius: 0.5rem;
}

.assistant-message {
  align-self: flex-start;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-dark);
  border-bottom-left-radius: 0.5rem;
}

body.light-mode .assistant-message {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border-light);
  color: var(--text-light);
}

.message.streaming {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.12) 0%,
    rgba(255, 255, 255, 0.06) 50%,
    rgba(255, 255, 255, 0.12) 100%
  );
  position: relative;
}

.message.streaming::after {
  content: '▊';
  animation: blink 1s infinite;
  color: var(--primary);
  margin-left: 2px;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}


.message-input-container {
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-dark);
  padding: 1.5rem;
  position: sticky;
  bottom: 0;
}

body.light-mode .message-input-container {
  background: rgba(255, 255, 255, 0.8);
  border-top: 1px solid var(--border-light);
}

.message-input-wrapper {
  display: flex;
  gap: 0.75rem;
  align-items: flex-end;
  max-width: 800px;
  margin: 0 auto;
}

#user-input {
  background: rgba(255, 255, 255, 0.06);
  border: 2px solid transparent;
  color: var(--text-dark);
  border-radius: 1.5rem;
  padding: 1rem 1.25rem;
  font-size: 1rem;
  line-height: 1.5;
  resize: none;
  max-height: 120px;
  flex: 1;
  transition: all 0.2s ease;
  backdrop-filter: blur(10px);
  overflow-y: auto;
  font-family: inherit;
}

body.light-mode #user-input {
  background: rgba(0, 0, 0, 0.03);
  color: var(--text-light);
}

#user-input:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(255, 255, 255, 0.12);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.08);
}

body.light-mode #user-input:focus {
  background: rgba(255, 255, 255, 0.95);
}

#send-button {
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  cursor: pointer;
  opacity: 0.6;
}

#send-button.enabled {
  opacity: 1;
  transform: scale(1.05);
}

#send-button:hover:not(:disabled) {
  background: var(--primary-dark);
  transform: scale(1.1);
}

#send-button:active {
  transform: scale(0.95);
}


.typing-indicator {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--border-dark);
  padding: 1rem 1.5rem;
  display: none;
  align-items: center;
  gap: 0.75rem;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.typing-indicator.visible {
  opacity: 1;
  display: flex;
}

body.light-mode .typing-indicator {
  background: rgba(0, 0, 0, 0.03);
  border-top: 1px solid var(--border-light);
}

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

.typing-dot {
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 50%;
  animation: typing-bounce 1.4s infinite ease-in-out;
}

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

@keyframes typing-bounce {
  0%, 80%, 100% { transform: scale(0.8); opacity: 0.5; }
  40% { transform: scale(1); opacity: 1; }
}


.code-block {
  position: relative;
  margin: 1rem 0;
  border-radius: 0.75rem;
  overflow: hidden;
  background: #1a1a1a;
  border: 1px solid #333;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  background: #2d2d2d;
  border-bottom: 1px solid #404040;
}

.code-language {
  color: #ccc;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.copy-btn {
  background: #404040;
  color: #ccc;
  border: none;
  border-radius: 0.375rem;
  padding: 0.375rem 0.5rem;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.copy-btn:hover {
  background: #555;
  color: white;
}

.copy-btn.copied {
  background: var(--success);
  color: white;
}

.code-block pre {
  margin: 0;
  padding: 1rem;
  overflow-x: auto;
  font-size: 0.875rem;
  line-height: 1.5;
}

.code-block pre code {
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  background: transparent !important;
}

.inline-code {
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.875rem;
  background: rgba(255, 255, 255, 0.08);
  color: #fbbf24;
  padding: 0.125rem 0.375rem;
  border-radius: 0.25rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

/* Code block light mode */
body.light-mode .code-block {
  background: #f8f8f8;
  border: 1px solid #e5e7eb;
}

body.light-mode .code-header {
  background: #e5e7eb;
  border-bottom: 1px solid #d1d5db;
}

body.light-mode .code-language {
  color: #6b7280;
}

body.light-mode .copy-btn {
  background: #d1d5db;
  color: #4b5563;
}

body.light-mode .copy-btn:hover {
  background: #9ca3af;
  color: white;
}

body.light-mode .inline-code {
  background: #f3f4f6;
  color: #dc2626;
  border: 1px solid #e5e7eb;
}


footer {
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-dark);
  padding: 1rem;
  text-align: center;
}

body.light-mode footer {
  background: rgba(255, 255, 255, 0.8);
  border-top: 1px solid var(--border-light);
}

.footer-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--primary-dark);
}


.chat-messages::-webkit-scrollbar {
  width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
  background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.18);
}

body.light-mode .chat-messages::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.2);
}

body.light-mode .chat-messages::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.3);
}

/* Responsive */
@media (max-width: 768px) {
  .message {
    max-width: 90%;
    padding: 0.875rem 1rem;
  }

  .chat-messages {
    padding: 1rem;
  }

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

  header {
    padding: 1rem;
  }

  .logo-title {
    font-size: 1.125rem;
  }
}

@media (max-width: 480px) {
  .message {
    max-width: 95%;
  }

  .header-actions {
    gap: 0.25rem;
  }

  .icon-btn {
    padding: 0.375rem;
  }
}


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

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

.slide-in-right { animation: slide-in-right 0.3s ease-out; }
.slide-in-left  { animation: slide-in-left 0.3s ease-out; }