:root {
  --bg: #12141a;
  --bg2: #1a1d26;
  --bg3: #232734;
  --border: #313648;
  --text: #e6e8ef;
  --text-dim: #9aa0b4;
  --accent: #7c6cf0;
  --accent2: #9d8fff;
  --danger: #e0646c;
  --user-bubble: #3a4a7a;
  --radius: 10px;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: "Segoe UI", "Microsoft YaHei", "Hiragino Sans", "Yu Gothic UI", sans-serif;
  background: var(--bg); color: var(--text); font-size: 15px;
}
.hidden { display: none !important; }

#app { display: flex; height: 100vh; height: 100dvh; }

/* ---------- Sidebar ---------- */
#sidebar {
  width: 260px; min-width: 260px; background: var(--bg2);
  border-right: 1px solid var(--border); display: flex; flex-direction: column;
}
.sidebar-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 14px 10px;
}
.app-title { font-size: 18px; margin: 0; }
.header-actions { display: flex; gap: 6px; }
.icon-btn {
  background: var(--bg3); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; width: 30px; height: 30px; cursor: pointer; font-size: 15px;
}
.icon-btn:hover { border-color: var(--accent); }
#scenario-list { list-style: none; margin: 0; padding: 6px; overflow-y: auto; flex: 1; }
#scenario-list li {
  padding: 9px 11px; border-radius: 8px; cursor: pointer; margin-bottom: 2px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--text-dim);
}
#scenario-list li:hover { background: var(--bg3); }
#scenario-list li.active { background: var(--bg3); color: var(--text); border-left: 3px solid var(--accent); }
#scenario-list li { display: flex; align-items: center; gap: 6px; }
#scenario-list li .item-name { flex: 1; overflow: hidden; text-overflow: ellipsis; }
#scenario-list li .item-delete {
  visibility: hidden; flex: none; background: transparent; border: none;
  color: var(--text-dim); cursor: pointer; font-size: 13px; padding: 2px 4px;
  border-radius: 6px;
}
#scenario-list li:hover .item-delete, #scenario-list li .item-delete:focus { visibility: visible; }
#scenario-list li .item-delete:hover { color: var(--danger); }
/* 触屏设备与窄屏：无悬停，删除按钮始终完全可见 */
@media (hover: none), (max-width: 768px) {
  #scenario-list li .item-delete { visibility: visible; opacity: 1; padding: 4px 8px; }
}
.sidebar-footer { padding: 12px 14px; border-top: 1px solid var(--border); }
.lang-label { display: block; font-size: 12px; color: var(--text-dim); margin-bottom: 4px; }
#lang-select {
  width: 100%; background: var(--bg3); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px; padding: 6px 8px;
}

/* ---------- Main ---------- */
#main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.empty-state {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 8px; color: var(--text-dim);
}
.empty-icon { font-size: 56px; }
.primary-btn {
  background: var(--accent); color: #fff; border: none; border-radius: 8px;
  padding: 9px 18px; cursor: pointer; font-size: 14px;
}
.primary-btn:hover { background: var(--accent2); }
.primary-btn:disabled { opacity: .5; cursor: default; }
.ghost-btn {
  background: transparent; color: var(--text-dim); border: 1px solid var(--border);
  border-radius: 8px; padding: 7px 14px; cursor: pointer; font-size: 13px;
}
.ghost-btn:hover { color: var(--text); border-color: var(--accent); }
.ghost-btn.danger:hover { color: var(--danger); border-color: var(--danger); }

#chat-area { flex: 1; display: flex; flex-direction: column; min-height: 0; }
#chat-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px; border-bottom: 1px solid var(--border); background: var(--bg2);
}
#chat-title { margin: 0; font-size: 17px; }
.chat-actions { display: flex; gap: 8px; }
#world-banner {
  padding: 8px 18px; font-size: 13px; color: var(--text-dim);
  border-bottom: 1px solid var(--border); background: rgba(124,108,240,.06);
}
#messages { flex: 1; overflow-y: auto; padding: 18px; display: flex; flex-direction: column; gap: 12px; }

.msg { max-width: 78%; display: flex; flex-direction: column; }
.msg .char-name { font-size: 12px; color: var(--text-dim); margin: 0 4px 3px; }
.msg .bubble { padding: 10px 14px; border-radius: var(--radius); line-height: 1.55; white-space: pre-wrap; word-break: break-word; }
.msg.user { align-self: flex-end; align-items: flex-end; }
.msg.user .bubble { background: var(--user-bubble); }
.msg.npc { align-self: flex-start; align-items: flex-start; }
.msg.npc .bubble { background: var(--bg3); border: 1px solid var(--border); }
.msg.narration { align-self: center; max-width: 92%; }
.msg.narration .bubble {
  background: transparent; color: var(--text-dim); font-style: italic;
  text-align: center; border: none; padding: 2px 8px;
}
.msg .npc-dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 5px; }
.msg.typing .bubble::after { content: "▍"; animation: blink 1s infinite; color: var(--accent); }
@keyframes blink { 50% { opacity: 0; } }

#composer { display: flex; gap: 10px; padding: 14px 18px; border-top: 1px solid var(--border); background: var(--bg2); }
#input-box {
  flex: 1; background: var(--bg3); color: var(--text); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 10px 12px; font-size: 15px; resize: none;
  font-family: inherit;
}
#input-box:focus { outline: none; border-color: var(--accent); }

/* ---------- Modals ---------- */
.modal {
  position: fixed; inset: 0; background: rgba(0,0,0,.55);
  display: flex; align-items: center; justify-content: center; z-index: 50;
}
.modal-box {
  background: var(--bg2); border: 1px solid var(--border); border-radius: 14px;
  width: 560px; max-width: 94vw; max-height: 88vh; overflow-y: auto; padding: 22px 24px;
}
.modal-box h3 { margin: 0 0 16px; }
.field { display: block; margin-bottom: 13px; }
.field > span { display: block; font-size: 13px; color: var(--text-dim); margin-bottom: 5px; }
.field input, .field textarea, .field select {
  width: 100%; background: var(--bg3); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px;
  font-size: 14px; font-family: inherit; resize: vertical;
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--accent); }
.npc-row {
  display: grid; grid-template-columns: 120px 1fr 30px; gap: 8px;
  margin-bottom: 8px; align-items: start;
}
.npc-row .npc-persona { min-height: 54px; }
.npc-remove {
  background: transparent; border: 1px solid var(--border); color: var(--text-dim);
  border-radius: 8px; cursor: pointer; height: 36px;
}
.npc-remove:hover { color: var(--danger); border-color: var(--danger); }
.modal-actions, .settings-actions {
  display: flex; justify-content: flex-end; gap: 10px; margin-top: 16px;
}
.settings-actions { justify-content: flex-start; }
.hint { font-size: 12.5px; color: var(--text-dim); line-height: 1.5; }
#test-result { margin-top: 8px; min-height: 18px; }
#test-result.ok { color: #6fce8f; }
#test-result.err { color: var(--danger); }
.cors-steps { color: var(--text-dim); line-height: 1.8; padding-left: 20px; }

/* ---------- DM thinking indicator ---------- */
#dm-status {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 20px; font-size: 13px; color: var(--accent2);
  border-top: 1px solid var(--border); background: rgba(124,108,240,.10);
}
.dm-spinner {
  width: 12px; height: 12px; border-radius: 50%;
  border: 2px solid var(--accent); border-top-color: transparent;
  animation: dm-spin 0.9s linear infinite;
}
#dm-status-text { animation: dm-pulse 1.4s ease-in-out infinite; }
@keyframes dm-spin { to { transform: rotate(360deg); } }
@keyframes dm-pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }

/* ---------- Mobile / narrow screens ---------- */
#backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 40;
}
.mobile-only { display: none; }
#chat-header { gap: 10px; }
@media (max-width: 768px) {
  .mobile-only { display: inline-block; }
  html, body { height: 100%; overflow: hidden; overscroll-behavior: none; }
  #app { height: 100dvh; }
  #chat-area { height: 100%; }
  #messages { -webkit-overflow-scrolling: touch; }
  #sidebar {
    position: fixed; left: 0; top: 0; bottom: 0; z-index: 50;
    transform: translateX(-100%); transition: transform .25s ease;
    box-shadow: 4px 0 16px rgba(0,0,0,.4);
  }
  body.sidebar-open #sidebar { transform: translateX(0); }
  #chat-header h2 { font-size: 15px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  #messages { padding: 12px; }
  .msg { max-width: 92%; }
  #composer { padding: 10px 12px; }
  .modal-box { width: 94vw; padding: 16px; }
}

.model-row { display: flex; gap: 8px; }
.model-row input { flex: 1; }
.model-row .ghost-btn { flex: none; white-space: nowrap; }