:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #14141d;
  --bg-tertiary: #1c1c28;
  --border: #2a2a38;
  --accent: #ff5a4e;
  --accent-hover: #ff7068;
  --text-primary: #e8e8f0;
  --text-secondary: #9090a8;
  --error: #ff5a4e;
  --success: #5ee2a5;
  --warning: #ffb84e;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
}

.screen { display: none; height: 100vh; flex-direction: column; }
.screen.active { display: flex; }
.hidden { display: none !important; }

/* ─── Login ─── */
#login-screen {
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at top, #1a1a28 0%, #0a0a0f 60%);
}

.login-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 48px 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.logo { display: flex; align-items: center; gap: 12px; justify-content: center; }
.logo-icon { font-size: 36px; }
.logo-text { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; }
.logo.small .logo-icon { font-size: 22px; }
.logo.small .logo-text { font-size: 18px; }

.subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin: 8px 0 32px;
  font-size: 14px;
}

#login-form { display: flex; flex-direction: column; gap: 12px; }

input, textarea, button {
  font-family: inherit;
  font-size: 15px;
  border: 1px solid var(--border);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: 10px;
  outline: none;
  transition: border-color 0.15s;
}

input:focus, textarea:focus { border-color: var(--accent); }

button {
  background: var(--accent);
  border: none;
  color: white;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

button:hover { background: var(--accent-hover); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

button.ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 6px 14px;
  font-size: 13px;
}
button.ghost:hover { color: var(--text-primary); border-color: var(--accent); background: transparent; }

.error {
  color: var(--error);
  font-size: 13px;
  text-align: center;
  min-height: 18px;
}

/* ─── Header con tabs ─── */
header {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 14px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.tabs { display: flex; gap: 4px; }
.tab {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
}
.tab:hover { color: var(--text-primary); background: var(--bg-tertiary); }
.tab.active { color: var(--accent); border-color: var(--accent); background: rgba(255,90,78,0.08); }

.user-area { display: flex; align-items: center; gap: 12px; justify-content: flex-end; }
#current-user { color: var(--text-secondary); font-size: 13px; }

/* ─── Layout ─── */
.chat-layout { display: flex; flex: 1; overflow: hidden; }

.sidebar {
  width: 240px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar h3 {
  color: var(--text-secondary);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.quick-btn {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  text-align: left;
  padding: 11px 14px;
  font-size: 13.5px;
  font-weight: 500;
}

.quick-btn:hover { background: var(--bg-tertiary); border-color: var(--accent); }

/* ─── Tab content ─── */
.tab-content { display: none; flex: 1; flex-direction: column; overflow: hidden; }
.tab-content.active { display: flex; }

/* ─── Chat ─── */
#messages {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.msg {
  max-width: 75%;
  padding: 12px 16px;
  border-radius: 14px;
  line-height: 1.5;
  word-wrap: break-word;
  white-space: pre-wrap;
  font-size: 14.5px;
}

.msg.user { align-self: flex-end; background: var(--accent); color: white; border-bottom-right-radius: 4px; }
.msg.bot { align-self: flex-start; background: var(--bg-secondary); border: 1px solid var(--border); border-bottom-left-radius: 4px; }
.msg.error-msg { align-self: center; background: rgba(255,90,78,0.1); border: 1px solid var(--error); color: var(--error); font-size: 13px; }

.typing { padding: 12px 16px; align-self: flex-start; background: var(--bg-secondary); border-radius: 14px; display: flex; gap: 4px; margin: 0 24px; }
.typing.hidden { display: none; }
.typing span {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--text-secondary);
  animation: bounce 1.4s infinite ease-in-out both;
}
.typing span:nth-child(1) { animation-delay: -0.32s; }
.typing span:nth-child(2) { animation-delay: -0.16s; }
@keyframes bounce { 0%, 80%, 100% { transform: scale(0); } 40% { transform: scale(1); } }

#chat-form { display: flex; gap: 12px; padding: 14px 24px; background: var(--bg-secondary); border-top: 1px solid var(--border); }
#chat-input { flex: 1; resize: none; font-family: inherit; }
#send-btn { padding: 0 24px; }

/* ─── Historial ─── */
.history-area { padding: 24px; overflow-y: auto; }
.history-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.history-header h2 { font-size: 20px; font-weight: 600; }

#runs-list { display: flex; flex-direction: column; gap: 10px; }

.run-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: center;
  cursor: pointer;
  transition: border-color 0.15s;
}
.run-card:hover { border-color: var(--accent); }

.run-icon { font-size: 22px; }
.run-info { display: flex; flex-direction: column; gap: 4px; }
.run-title { font-weight: 600; font-size: 14px; }
.run-meta { color: var(--text-secondary); font-size: 12px; }
.run-stats { display: flex; gap: 14px; font-size: 13px; color: var(--text-secondary); }
.run-stats strong { color: var(--text-primary); font-weight: 600; }

.status-ok { color: var(--success); }
.status-error { color: var(--error); }
.status-partial { color: var(--warning); }
.status-running { color: var(--text-secondary); }

/* ─── Modales ─── */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}
.modal.hidden { display: none; }
.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 14px;
  width: 100%;
  max-width: 800px;
  height: 80vh;
  display: flex;
  flex-direction: column;
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 16px; font-weight: 600; }

.live-log {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px;
  font-family: 'JetBrains Mono', 'Consolas', 'Courier New', monospace;
  font-size: 13px;
  background: #0a0a0f;
  line-height: 1.7;
}

.log-line { display: flex; gap: 10px; padding: 2px 0; }
.log-ts { color: #6a6a80; flex-shrink: 0; }
.log-msg { word-break: break-word; }
.log-info  .log-msg { color: var(--text-primary); }
.log-ok    .log-msg { color: var(--success); }
.log-warn  .log-msg { color: var(--warning); }
.log-error .log-msg { color: var(--error); font-weight: 500; }
.log-ping  .log-msg { color: #444; font-size: 11px; }

/* Mobile */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .msg { max-width: 90%; }
  header { grid-template-columns: 1fr 1fr; }
  .tabs { grid-column: span 2; justify-content: center; padding-top: 8px; }
}