/* ═══════════════════════════════════════════════════
   BookLine Studio — Estilos Completos
   ═══════════════════════════════════════════════════ */

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

:root {
  --bg-primary: #0d1117; --bg-secondary: #161b22; --bg-tertiary: #1c2333;
  --bg-card: #1a1f2e; --border-color: #2a2f3e; --border-accent: #c9b458;
  --text-primary: #e6edf3; --text-secondary: #8b949e; --text-muted: #6e7681;
  --accent-gold: #c9b458; --accent-gold-dim: #a89640;
  --accent-blue: #58a6ff; --accent-purple: #bc8cff;
  --accent-green: #3fb950; --accent-red: #f85149;
  --mistral-color: #ff7000; --gemini-color: #4285f4; --claude-color: #bc8cff;
  --bookline-bg: #fffef9; --bookline-text: #1a1a1a;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-serif: 'Playfair Display', 'Times New Roman', Times, Georgia, serif;
  --radius-sm: 6px; --radius-md: 10px; --radius-lg: 14px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3); --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
}

html, body { height: 100%; overflow: hidden; }
body { font-family: var(--font-sans); background: var(--bg-primary); color: var(--text-primary); line-height: 1.5; }

.studio-header {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  padding: 12px 24px; display: flex; align-items: center; justify-content: space-between;
  border-bottom: 2px solid var(--accent-gold); box-shadow: var(--shadow-md); flex-shrink: 0;
}
.studio-header h1 { color: var(--accent-gold); font-family: var(--font-serif); font-size: 20px; font-weight: 700; letter-spacing: 1px; }
.studio-header .subtitle { color: var(--text-secondary); font-size: 11px; margin-top: 1px; display: block; }
.status-indicator { font-size: 14px; color: var(--accent-green); animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

.studio-main { display: flex; height: calc(100vh - 60px); gap: 8px; padding: 8px; overflow: hidden; }
.column { display: flex; flex-direction: column; min-width: 0; }
.column-chats { flex: 5; gap: 8px; overflow: hidden; }
.column-bookline { flex: 5; overflow: hidden; }

.chat-panel { display: flex; flex-direction: column; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); }
#mainChatPanel { flex: 6; min-height: 0; }
#claudeChatPanel { flex: 4; min-height: 0; }

.panel-header { display: flex; align-items: center; gap: 8px; padding: 8px 14px; background: linear-gradient(90deg, #1a1a2e, #16213e); border-bottom: 2px solid var(--accent-gold); flex-shrink: 0; }
.panel-header-claude { border-bottom-color: var(--claude-color); }
.panel-header-bookline { border-bottom-color: var(--accent-gold); }
.panel-icon { font-size: 16px; }
.panel-title { color: var(--accent-gold); font-size: 13px; font-weight: 600; letter-spacing: 0.3px; }
.panel-header-claude .panel-title { color: var(--claude-color); }

.provider-selector { display: flex; gap: 4px; margin-left: auto; }
.provider-btn { display: flex; align-items: center; gap: 5px; padding: 4px 12px; background: transparent; border: 1px solid var(--border-color); border-radius: 20px; color: var(--text-secondary); font-size: 11px; font-weight: 500; cursor: pointer; transition: all 0.2s; font-family: var(--font-sans); }
.provider-btn:hover { border-color: var(--accent-gold); color: var(--text-primary); }
.provider-btn.active { background: var(--accent-gold); color: #1a1a2e; border-color: var(--accent-gold); font-weight: 600; }
.provider-dot { width: 6px; height: 6px; border-radius: 50%; display: inline-block; }
.mistral-dot { background: var(--mistral-color); }
.gemini-dot { background: var(--gemini-color); }

.chat-messages { flex: 1; overflow-y: auto; padding: 12px; display: flex; flex-direction: column; gap: 10px; min-height: 0; }
.chat-messages::-webkit-scrollbar { width: 6px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }

.welcome-msg { text-align: center; padding: 30px 20px; color: var(--text-muted); font-size: 13px; }
.welcome-msg p { margin-bottom: 8px; }
.welcome-msg .hint { font-size: 11px; }
.welcome-msg code { background: var(--bg-tertiary); padding: 2px 6px; border-radius: 4px; font-size: 11px; color: var(--accent-gold); }

.message { display: flex; flex-direction: column; max-width: 88%; animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
.message.user { align-self: flex-end; }
.message.assistant { align-self: flex-start; }

.message-bubble { padding: 10px 14px; border-radius: var(--radius-md); font-size: 13px; line-height: 1.6; word-wrap: break-word; overflow-wrap: break-word; }
.message.user .message-bubble { background: linear-gradient(135deg, #2a3040, #1e2636); border: 1px solid var(--border-color); border-bottom-right-radius: 4px; }
.message.assistant .message-bubble { background: var(--bg-tertiary); border: 1px solid var(--border-color); border-bottom-left-radius: 4px; }
.message.system .message-bubble { background: rgba(201,180,88,0.1); border: 1px solid var(--accent-gold-dim); border-radius: var(--radius-sm); color: var(--accent-gold); font-size: 12px; font-style: italic; text-align: center; max-width: 100%; }
.message-meta { font-size: 10px; color: var(--text-muted); margin-top: 3px; padding: 0 4px; }
.message.user .message-meta { text-align: right; }

.chat-input-area { display: flex; gap: 8px; padding: 10px 12px; background: var(--bg-secondary); border-top: 1px solid var(--border-color); flex-shrink: 0; }
.chat-input-area textarea { flex: 1; resize: none; border: 1px solid var(--border-color); border-radius: var(--radius-sm); background: var(--bg-tertiary); color: var(--text-primary); padding: 8px 12px; font-family: var(--font-sans); font-size: 13px; line-height: 1.5; outline: none; transition: border-color 0.2s; }
.chat-input-area textarea:focus { border-color: var(--accent-gold); }
.chat-input-area textarea::placeholder { color: var(--text-muted); font-size: 12px; }

.send-btn { width: 44px; height: 44px; border: none; border-radius: var(--radius-sm); background: var(--accent-gold); color: #1a1a2e; font-size: 18px; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all 0.2s; flex-shrink: 0; align-self: flex-end; }
.send-btn:hover { background: #d4c062; transform: scale(1.05); }
.send-btn:active { transform: scale(0.95); }
.send-btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
.send-btn-claude { background: var(--claude-color); }
.send-btn-claude:hover { background: #caa0ff; }

.typing-indicator { display: flex; gap: 4px; padding: 12px 16px; }
.typing-indicator span { width: 7px; height: 7px; border-radius: 50%; background: var(--text-muted); animation: typing 1.4s ease-in-out infinite; }
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing { 0%, 60%, 100% { transform: translateY(0); opacity: 0.4; } 30% { transform: translateY(-8px); opacity: 1; } }

.bookline-panel { display: flex; flex-direction: column; height: 100%; background: var(--bg-card); border: 1px solid var(--accent-gold-dim); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); }
.bookline-actions { display: flex; gap: 4px; margin-left: auto; }
.bl-action-btn { padding: 3px 10px; background: transparent; border: 1px solid var(--border-color); border-radius: var(--radius-sm); color: var(--text-secondary); font-size: 11px; cursor: pointer; transition: all 0.2s; font-family: var(--font-sans); }
.bl-action-btn:hover { border-color: var(--accent-gold); color: var(--accent-gold); }
.sync-btn { border-color: var(--accent-gold-dim) !important; color: var(--accent-gold) !important; }

.bookline-tabs { display: flex; flex-wrap: wrap; gap: 2px; padding: 6px 8px 0; background: var(--bg-secondary); flex-shrink: 0; }
.bl-tab { padding: 6px 14px; background: var(--bg-tertiary); border: none; border-radius: var(--radius-sm) var(--radius-sm) 0 0; color: var(--text-muted); font-size: 12px; cursor: pointer; transition: all 0.2s; font-family: var(--font-sans); }
.bl-tab:hover { color: var(--text-secondary); background: var(--border-color); }
.bl-tab.active { background: var(--bookline-bg); color: var(--bookline-text); font-weight: 600; }

.modes-hint { padding: 6px 14px; background: rgba(201,180,88,0.08); border-bottom: 1px solid var(--border-color); font-size: 10px; color: var(--text-muted); flex-shrink: 0; }
.modes-hint strong { color: var(--text-secondary); }

.bookline-content { flex: 1; overflow-y: auto; padding: 28px 36px; background: var(--bookline-bg); font-family: 'Times New Roman', Times, Georgia, serif; font-size: 15px; line-height: 1.85; color: var(--bookline-text); cursor: default; user-select: text; min-height: 0; }
.bookline-content::-webkit-scrollbar { width: 8px; }
.bookline-content::-webkit-scrollbar-track { background: #f0ede4; }
.bookline-content::-webkit-scrollbar-thumb { background: #d4d0c5; border-radius: 4px; }
.bookline-content h1 { font-family: var(--font-serif); font-size: 22px; border-bottom: 2px solid var(--accent-gold); padding-bottom: 8px; margin-bottom: 20px; color: #2c2c2c; }
.bookline-content p { text-align: justify; margin-bottom: 12px; text-indent: 2em; }
.bookline-content p:first-of-type { text-indent: 0; }
.bl-empty { color: #999; font-style: italic; text-align: center; padding: 60px 20px; font-size: 14px; }
.bl-empty code { background: #f0ede4; padding: 2px 6px; border-radius: 3px; font-size: 12px; color: #8b7832; }
.bl-meta { font-size: 11px; color: #bbb; text-align: right; margin-top: 20px; padding-top: 10px; border-top: 1px solid #eee; }

.bookline-content.link-mode { outline: 2px dashed var(--accent-blue); outline-offset: -2px; }

.direct-editor { background: #fffef9; border-top: 2px solid var(--accent-gold); flex-shrink: 0; }
.editor-header { display: flex; justify-content: space-between; align-items: center; padding: 8px 14px; background: #f5f3ea; font-size: 12px; color: #666; font-weight: 600; }
.editor-btn { padding: 4px 14px; border: 1px solid var(--border-color); border-radius: var(--radius-sm); font-size: 12px; cursor: pointer; font-family: var(--font-sans); transition: all 0.2s; margin-left: 6px; }
.save-btn { background: var(--accent-gold); color: #1a1a2e; border-color: var(--accent-gold); font-weight: 600; }
.save-btn:hover { background: #d4c062; }
.cancel-btn { background: transparent; color: var(--text-secondary); }
.cancel-btn:hover { border-color: var(--accent-red); color: var(--accent-red); }
#editTextarea { width: 100%; border: none; outline: none; padding: 16px 36px; font-family: 'Times New Roman', Times, Georgia, serif; font-size: 15px; line-height: 1.85; color: var(--bookline-text); background: var(--bookline-bg); resize: vertical; min-height: 200px; }

.status-bar { padding: 6px 14px; font-size: 11px; color: var(--text-muted); background: var(--bg-secondary); border-top: 1px solid var(--border-color); flex-shrink: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

@media (max-width: 900px) {
  .studio-main { flex-direction: column; overflow-y: auto; }
  .column-chats, .column-bookline { flex: none; height: auto; min-height: 400px; }
}
@media (max-width: 600px) {
  .studio-header { padding: 10px 14px; }
  .studio-header h1 { font-size: 16px; }
  .provider-selector { flex-direction: column; gap: 2px; }
  .bookline-content { padding: 16px 20px; }
}