/* WhyNot Chatbot — Nyaman, hangat, sederhana */

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

:root {
  --bg: #f0e8dc;
  --bg-chat: #f7f1e8;
  --bg-input: #f7f1e8;
  --bg-user-bubble: #e0d5c5;
  --bg-assistant-bubble: #ede6da;
  --bg-hover: #e6ddd0;

  --text: #2c2520;
  --text-secondary: #6b5e53;
  --text-muted: #9a8e80;

  --accent: #7c6a52;
  --accent-light: #a8937a;

  --border: #ddd4c6;
  --border-focus: #c4b8a5;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Menlo', 'Consolas', monospace;

  --radius: 12px;
  --radius-sm: 8px;
}

html, body {
  height: 100%;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

/* Tata Letak */
.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: 760px;
  margin: 0 auto;
}

/* Header — sederhana dan tenang */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.logo h1 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}

.version-badge {
  font-size: 0.6rem;
  font-weight: 500;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--bg-hover);
  color: var(--text-muted);
}

.header-right {
  display: flex;
  align-items: center;
}

.model-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #8bba7c;
}

/* Area Chat */
.chat-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px 20px;
}

.chat-area::-webkit-scrollbar {
  width: 4px;
}

.chat-area::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

/* Layar Selamat Datang — hanya teks, tidak terlalu mencolok */
.welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 20px 40px;
}

.welcome-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.welcome h2 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}

.welcome p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  max-width: 440px;
  line-height: 1.65;
}

.welcome-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 24px;
}

.feature-card {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 20px;
  background: var(--bg-hover);
  font-size: 0.78rem;
  color: var(--text-secondary);
  border: none;
  cursor: default;
}

.feature-icon {
  font-size: 0.85rem;
}

/* Pesan */
.messages {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.message {
  display: flex;
  gap: 10px;
  animation: msgIn 0.25s ease;
}

@keyframes msgIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.message.user {
  flex-direction: row-reverse;
}

.message-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
  background: var(--bg-hover);
}

.message-content {
  max-width: 72%;
  min-width: 0;
}

.message-bubble {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 0.875rem;
  line-height: 1.7;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.message.assistant .message-bubble {
  background: var(--bg-assistant-bubble);
  border-top-left-radius: 4px;
}

.message.user .message-bubble {
  background: var(--bg-user-bubble);
  border-top-right-radius: 4px;
}

/* Pemformatan konten pesan */
.message-bubble h1, .message-bubble h2, .message-bubble h3 {
  margin-top: 10px;
  margin-bottom: 4px;
  font-weight: 600;
}
.message-bubble h1 { font-size: 1rem; }
.message-bubble h2 { font-size: 0.95rem; }
.message-bubble h3 { font-size: 0.9rem; color: var(--accent); }
.message-bubble p { margin-bottom: 6px; line-height: 1.45; }
.message-bubble p:last-child { margin-bottom: 0; }
.message-bubble ul, .message-bubble ol { padding-left: 18px; margin-bottom: 6px; }
.message-bubble li { margin-bottom: 2px; line-height: 1.45; }
.message-bubble code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 2px 5px;
  border-radius: 4px;
  background: rgba(0,0,0,0.05);
}
.message-bubble pre {
  margin: 8px 0;
  padding: 12px;
  border-radius: var(--radius-sm);
  background: #e6ddd0;
  overflow-x: auto;
  font-size: 0.8rem;
}
.message-bubble pre code { padding: 0; background: none; }
.message-bubble strong { font-weight: 600; }
.message-bubble table { border-collapse: collapse; width: 100%; margin: 8px 0; font-size: 0.8rem; }
.message-bubble th, .message-bubble td { padding: 6px 10px; text-align: left; border: 1px solid var(--border); }
.message-bubble th { background: var(--bg-hover); font-weight: 600; }
.message-bubble hr { border: none; border-top: 1px solid var(--border); margin: 10px 0; }

/* Mengetik */
.typing-indicator {
  display: flex;
  gap: 4px;
  padding: 12px 16px;
}
.typing-indicator span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: typeDot 1.2s ease-in-out infinite;
}
.typing-indicator span:nth-child(2) { animation-delay: 0.15s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.3s; }
@keyframes typeDot {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.35; }
  30% { transform: translateY(-4px); opacity: 0.8; }
}

/* Bilah Pratinjau File */
.file-preview-bar {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 8px 20px;
  background: var(--bg-hover);
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
}
.file-preview-bar.active { display: flex; }
.file-preview-info {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  min-width: 0;
}
.file-preview-icon { font-size: 0.9rem; flex-shrink: 0; }
.file-preview-name {
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-preview-meta { color: var(--text-muted); white-space: nowrap; }
.file-preview-remove {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85rem;
  transition: color 0.15s;
}
.file-preview-remove:hover { color: #c0705b; }

/* Area Input */
.input-area {
  padding: 14px 20px 10px;
  border-top: 1px solid var(--border);
  background: var(--bg);
  position: relative;
}

.drop-zone-overlay {
  display: none;
  position: absolute;
  inset: 0;
  z-index: 20;
  background: rgba(240, 232, 220, 0.92);
  border: 2px dashed var(--accent-light);
  border-radius: var(--radius);
  align-items: center;
  justify-content: center;
}
.drop-zone-overlay.active { display: flex; }
.drop-zone-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-weight: 500;
  font-size: 0.85rem;
}
.drop-icon { font-size: 1.5rem; }

.input-container {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 5px 5px 5px 4px;
  transition: border-color 0.15s;
}
.input-container:focus-within {
  border-color: var(--border-focus);
}

.upload-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 6px;
  transition: color 0.15s;
  flex-shrink: 0;
}
.upload-btn:hover { color: var(--accent); }

.chat-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.875rem;
  line-height: 1.5;
  resize: none;
  max-height: 120px;
  padding: 7px 0;
}
.chat-input::placeholder { color: var(--text-muted); }

.send-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: var(--accent);
  color: white;
  cursor: pointer;
  border-radius: 6px;
  transition: opacity 0.15s;
  flex-shrink: 0;
}
.send-btn:hover:not(:disabled) { opacity: 0.85; }
.send-btn:disabled { opacity: 0.25; cursor: not-allowed; }

.disclaimer {
  text-align: center;
  font-size: 0.65rem;
  color: var(--text-muted);
  padding: 8px 0 2px;
  line-height: 1.5;
}

/* Loading saat mengunggah */
.upload-loading {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(240, 232, 220, 0.88);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.upload-loading .spinner {
  width: 28px;
  height: 28px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.upload-loading span { font-size: 0.85rem; color: var(--text-secondary); }

/* Notifikasi Singkat (Toast) */
.toast {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
  animation: toastIn 0.2s ease, toastOut 0.2s ease 3.8s forwards;
  max-width: 90%;
  text-align: center;
}
.toast.error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #b45454;
}
.toast.success {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: #548a5e;
}
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, -10px); } to { opacity: 1; transform: translate(-50%, 0); } }
@keyframes toastOut { from { opacity: 1; } to { opacity: 0; } }

/* Responsif */
@media (max-width: 640px) {
  .header { padding: 12px 14px; }
  .chat-area { padding: 16px 14px; }
  .input-area { padding: 10px 14px 8px; }
  .welcome { padding: 50px 14px 30px; }
  .message-content { max-width: 85%; }
}