/* ═══════════════════════════════════════════════════════
   OmicsLab AI Assistant — styles
   ═══════════════════════════════════════════════════════ */

.ai-wrap {
  display: grid;
  grid-template-columns: 220px 1fr;
  height: calc(100vh - 64px);
  max-height: 860px;
  overflow: hidden;
}

/* ── Sidebar ── */
.ai-sidebar {
  background: #0d1117;
  border-right: 1px solid #21262d;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  overflow-y: auto;
}

.ai-sidebar-header { margin-bottom: .25rem; }
.ai-sidebar-title {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .88rem;
  font-weight: 700;
  color: #e6edf3;
}

.ai-model-label { font-size: .7rem; color: #484f58; text-transform: uppercase; letter-spacing: .05em; }
.ai-model-select {
  width: 100%;
  padding: .35rem .5rem;
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 5px;
  color: #c9d1d9;
  font-size: .78rem;
  font-family: inherit;
  outline: none;
  cursor: pointer;
}
.ai-model-select:focus { border-color: #58a6ff; }

.ai-key-row { display: flex; align-items: center; gap: .5rem; }
.ai-key-btn {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .3rem .65rem;
  background: #21262d;
  border: 1px solid #30363d;
  border-radius: 5px;
  color: #8b949e;
  font-size: .72rem;
  cursor: pointer;
  font-family: inherit;
  transition: color .15s, border-color .15s;
}
.ai-key-btn:hover { color: #e6edf3; border-color: #58a6ff; }
.ai-key-badge { font-size: .7rem; color: #484f58; }
.ai-key-badge.ai-key-ok { color: #3fb950; }

.ai-usage-row { font-size: .7rem; color: #484f58; }

.ai-clear-btn {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .3rem .65rem;
  background: transparent;
  border: 1px solid #30363d;
  border-radius: 5px;
  color: #6e7681;
  font-size: .72rem;
  cursor: pointer;
  font-family: inherit;
  transition: color .15s, border-color .15s;
}
.ai-clear-btn:hover { color: #ff6b6b; border-color: rgba(255,107,107,.3); }

.ai-sidebar-note { font-size: .66rem; color: #484f58; line-height: 1.5; margin-top: auto; }

/* ── Chat area ── */
.ai-chat-area {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: #0d1117;
}

.ai-message-list {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  scroll-behavior: smooth;
}

/* ── Messages ── */
.ai-msg { display: flex; flex-direction: column; gap: .2rem; }
.ai-msg-user { align-items: flex-end; }
.ai-msg-assistant { align-items: flex-start; }
.ai-msg-system { align-items: center; }

.ai-bubble {
  max-width: 78%;
  padding: .7rem 1rem;
  border-radius: 12px;
  font-size: .84rem;
  line-height: 1.65;
  word-break: break-word;
}

.ai-bubble-user {
  background: #1f6feb;
  color: #fff;
  border-radius: 12px 12px 3px 12px;
}

.ai-bubble-assistant {
  background: #161b22;
  border: 1px solid #21262d;
  color: #c9d1d9;
  border-radius: 3px 12px 12px 12px;
}

.ai-msg-system {
  font-size: .75rem;
  color: #484f58;
  text-align: center;
  padding: .25rem;
}

/* ── Markdown elements inside assistant bubble ── */
.ai-bubble-assistant .ai-h2 { font-size: .95rem; font-weight: 700; color: #e6edf3; margin: .6rem 0 .25rem; }
.ai-bubble-assistant .ai-h3 { font-size: .88rem; font-weight: 700; color: #e6edf3; margin: .5rem 0 .2rem; }
.ai-bubble-assistant .ai-h4 { font-size: .82rem; font-weight: 700; color: #e6edf3; margin: .4rem 0 .2rem; }
.ai-bubble-assistant .ai-p  { margin: .2rem 0; }
.ai-bubble-assistant .ai-list { padding-left: 1.25rem; margin: .2rem 0; }
.ai-bubble-assistant .ai-list li { margin: .15rem 0; }
.ai-bubble-assistant .ai-inline-code {
  background: rgba(110,118,129,.15);
  border-radius: 3px;
  padding: .1em .3em;
  font-family: 'Cascadia Code','Fira Mono',monospace;
  font-size: .82em;
  color: #e3b341;
}

.ai-code-wrap {
  position: relative;
  margin: .5rem 0;
  background: #0d1117;
  border: 1px solid #30363d;
  border-radius: 8px;
  overflow: hidden;
}

.ai-code-lang {
  font-size: .66rem;
  color: #484f58;
  padding: .25rem .75rem;
  background: #21262d;
  text-transform: uppercase;
  letter-spacing: .05em;
}

.ai-copy-btn {
  position: absolute;
  top: .25rem;
  right: .5rem;
  padding: .15rem .45rem;
  background: #21262d;
  border: 1px solid #30363d;
  border-radius: 4px;
  color: #8b949e;
  font-size: .65rem;
  cursor: pointer;
  font-family: inherit;
  transition: color .15s;
}
.ai-copy-btn:hover { color: #e6edf3; }

.ai-pre {
  margin: 0;
  padding: .65rem .9rem;
  overflow-x: auto;
  font-family: 'Cascadia Code','Fira Mono',monospace;
  font-size: .78rem;
  line-height: 1.6;
  color: #e6edf3;
}

.ai-err-inline { color: #ff6b6b; font-size: .82rem; }

/* Typing cursor */
.ai-cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: #58a6ff;
  animation: ai-blink .6s step-end infinite;
  vertical-align: middle;
}
@keyframes ai-blink { 50% { opacity: 0; } }

/* ── Welcome screen ── */
.ai-welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .75rem;
  padding: 2rem 1rem;
  text-align: center;
}

.ai-welcome-icon { color: #484f58; }
.ai-welcome-title { font-size: 1.15rem; font-weight: 700; color: #e6edf3; }
.ai-welcome-sub { font-size: .82rem; color: #8b949e; max-width: 420px; line-height: 1.55; }

.ai-ctx-badge {
  padding: .25rem .75rem;
  background: rgba(63,185,80,.08);
  border: 1px solid rgba(63,185,80,.2);
  border-radius: 20px;
  font-size: .72rem;
  color: #3fb950;
}

.ai-ctx-prompts { width: 100%; max-width: 560px; }
.ai-ctx-label { font-size: .72rem; color: #484f58; margin-bottom: .4rem; text-align: left; }
.ai-ctx-btn {
  display: block;
  width: 100%;
  padding: .4rem .75rem;
  background: rgba(88,166,255,.05);
  border: 1px solid rgba(88,166,255,.15);
  border-radius: 6px;
  color: #8b949e;
  font-size: .78rem;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  margin-bottom: .3rem;
  transition: background .15s, color .15s;
}
.ai-ctx-btn:hover { background: rgba(88,166,255,.1); color: #58a6ff; }

.ai-starter-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .5rem;
  width: 100%;
  max-width: 620px;
  margin-top: .25rem;
}

.ai-starter-btn {
  padding: .5rem .75rem;
  background: #161b22;
  border: 1px solid #21262d;
  border-radius: 8px;
  color: #8b949e;
  font-size: .76rem;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  line-height: 1.4;
  transition: background .15s, border-color .15s, color .15s;
}
.ai-starter-btn:hover { background: rgba(88,166,255,.06); border-color: #58a6ff; color: #c9d1d9; }

/* ── Input bar ── */
.ai-input-bar {
  display: flex;
  align-items: flex-end;
  gap: .5rem;
  padding: .75rem 1rem;
  border-top: 1px solid #21262d;
  background: #0d1117;
}

.ai-input {
  flex: 1;
  padding: .55rem .85rem;
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 8px;
  color: #e6edf3;
  font-size: .84rem;
  font-family: inherit;
  outline: none;
  resize: none;
  min-height: 40px;
  max-height: 160px;
  overflow-y: auto;
  transition: border-color .15s;
  line-height: 1.5;
}
.ai-input:focus { border-color: #58a6ff; }
.ai-input::placeholder { color: #484f58; }

.ai-send-btn {
  padding: .5rem 1.1rem;
  background: #238636;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background .15s, opacity .15s;
  align-self: flex-end;
}
.ai-send-btn:hover { background: #2ea043; }
.ai-send-btn:disabled { opacity: .5; cursor: not-allowed; }

.ai-input-hint { font-size: .66rem; color: #484f58; padding: 0 1rem .5rem; text-align: center; }

/* ── API key modal ── */
.ai-key-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.7);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ai-key-modal {
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 12px;
  padding: 1.5rem;
  width: 90%;
  max-width: 420px;
}

.ai-key-modal-title { font-size: 1rem; font-weight: 700; color: #e6edf3; margin-bottom: .5rem; }
.ai-key-modal-desc { font-size: .78rem; color: #8b949e; line-height: 1.55; margin-bottom: 1rem; }

.ai-key-input {
  width: 100%;
  padding: .55rem .85rem;
  background: #0d1117;
  border: 1px solid #30363d;
  border-radius: 6px;
  color: #e6edf3;
  font-family: 'Cascadia Code','Fira Mono',monospace;
  font-size: .85rem;
  outline: none;
  box-sizing: border-box;
  transition: border-color .15s;
}
.ai-key-input:focus { border-color: #58a6ff; }

.ai-key-modal-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 1rem; flex-wrap: wrap; gap: .5rem; }
.ai-key-link { font-size: .75rem; color: #58a6ff; text-decoration: none; }
.ai-key-link:hover { text-decoration: underline; }
.ai-key-btns { display: flex; gap: .5rem; }
.ai-key-cancel {
  padding: .35rem .85rem; background: #21262d; border: 1px solid #30363d; border-radius: 6px;
  color: #8b949e; font-size: .82rem; cursor: pointer; font-family: inherit;
}
.ai-key-save {
  padding: .35rem .85rem; background: #238636; border: none; border-radius: 6px;
  color: #fff; font-size: .82rem; font-weight: 600; cursor: pointer; font-family: inherit;
  transition: background .15s;
}
.ai-key-save:hover { background: #2ea043; }

/* ── Responsive ── */
@media (max-width: 680px) {
  .ai-wrap { grid-template-columns: 1fr; grid-template-rows: auto 1fr; }
  .ai-sidebar { flex-direction: row; flex-wrap: wrap; gap: .5rem; padding: .75rem; border-right: none; border-bottom: 1px solid #21262d; }
  .ai-sidebar-note { display: none; }
  .ai-starter-grid { grid-template-columns: 1fr; }
}