/* ===== Minis AI Chat Lite ===== */
:root {
  --bg: #0f1115;
  --panel: #161a20;
  --panel-2: #1c222b;
  --fg: #e6e9ee;
  --fg-dim: #8b95a3;
  --line: #262d37;
  --primary: #10a37f;
  --primary-2: #0b7f63;
  --danger: #e5484d;
  --radius: 12px;
  --sidebar-w: 260px;
}
html[data-theme="light"] {
  --bg: #f7f8fa;
  --panel: #ffffff;
  --panel-2: #f1f3f6;
  --fg: #1c2027;
  --fg-dim: #6b7280;
  --line: #e5e8ec;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}
#app { height: 100%; }
.boot { height: 100%; display: flex; align-items: center; justify-content: center; }
.spinner {
  width: 30px; height: 30px; border-radius: 50%;
  border: 3px solid var(--line); border-top-color: var(--primary);
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: var(--primary); }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: var(--line); border-radius: 8px; }

/* ---------- 登录页 ---------- */
.auth-wrap {
  height: 100%; display: flex; align-items: center; justify-content: center;
  padding: 20px; overflow: auto;
}
.auth-card {
  width: 100%; max-width: 380px; background: var(--panel);
  border: 1px solid var(--line); border-radius: 16px; padding: 28px 24px 20px;
  display: flex; flex-direction: column; gap: 14px;
  box-shadow: 0 20px 60px rgba(0,0,0,.35);
}
.brand { display: flex; align-items: center; gap: 10px; justify-content: center; font-size: 20px; font-weight: 700; }
.brand .logo {
  width: 32px; height: 32px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #34d399);
  display: grid; place-items: center; color: #fff; font-weight: 800;
}
.sub { text-align: center; color: var(--fg-dim); font-size: 13px; margin-top: -6px; }

.field { display: flex; flex-direction: column; gap: 6px; font-size: 13px; }
.field > span { color: var(--fg-dim); }
.field input, .field select, .field textarea, .inp {
  width: 100%; padding: 10px 12px; border-radius: 10px;
  background: var(--panel-2); border: 1px solid var(--line); outline: none;
  transition: border-color .15s;
}
.field input:focus, .field select:focus, .field textarea:focus, .inp:focus { border-color: var(--primary); }
.field textarea { min-height: 90px; font-family: ui-monospace, Menlo, monospace; font-size: 12px; resize: vertical; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 14px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--panel-2); color: var(--fg); font-size: 14px;
  transition: .15s; white-space: nowrap;
}
.btn:hover { border-color: var(--primary); }
.btn:disabled { opacity: .5; cursor: default; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-2); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--primary); padding: 6px 8px; }
.btn.danger { color: var(--danger); border-color: transparent; background: transparent; }
.btn.sm { padding: 5px 9px; font-size: 12px; border-radius: 8px; }
.btn.block { width: 100%; }

.err { color: var(--danger); font-size: 13px; text-align: center; min-height: 0; }
.ok { color: var(--primary); font-size: 13px; }
.tip { color: var(--fg-dim); font-size: 12px; text-align: center; line-height: 1.7; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.grow { flex: 1; min-width: 0; }
.mono { font-family: ui-monospace, Menlo, monospace; font-size: 12px; }

/* ---------- 主界面 ---------- */
.shell { display: flex; height: 100%; }

.sidebar {
  width: var(--sidebar-w); flex: 0 0 var(--sidebar-w);
  background: var(--panel); border-right: 1px solid var(--line);
  display: flex; flex-direction: column; transition: margin .2s;
}
.sidebar .top { padding: 12px 12px 8px; display: flex; flex-direction: column; gap: 8px; }
.sidebar .top-row { display: flex; gap: 8px; align-items: center; font-weight: 700; }
.sidebar .top-row .logo {
  width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--primary), #34d399); color: #fff; font-size: 13px; font-weight: 800;
}
.sess-list { flex: 1; overflow-y: auto; padding: 4px 8px 8px; display: flex; flex-direction: column; gap: 2px; }
.sess {
  display: flex; align-items: center; gap: 6px; padding: 9px 10px; border-radius: 9px;
  font-size: 13.5px; color: var(--fg); cursor: pointer; position: relative;
}
.sess:hover { background: var(--panel-2); }
.sess.active { background: var(--panel-2); box-shadow: inset 0 0 0 1px var(--line); }
.sess .t { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sess .meta { font-size: 11px; color: var(--fg-dim); }
/* 桌面端不显示侧栏关闭按钮 */
#side-close { display: none; }
.sess .del { opacity: 0; font-size: 12px; padding: 2px 5px; border-radius: 6px; color: var(--fg-dim); }
.sess:hover .del { opacity: 1; }
.sess .del:hover { color: var(--danger); background: rgba(229,72,77,.12); }
.sess .rename {
  position: absolute; inset: 4px; border-radius: 8px; border: 1px solid var(--primary);
  background: var(--panel); padding: 0 8px; font-size: 13px; z-index: 2;
}
.side-bottom { border-top: 1px solid var(--line); padding: 10px 12px; display: flex; flex-direction: column; gap: 8px; }
.user-line { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.avatar {
  width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center;
  background: var(--primary); color: #fff; font-size: 12px; font-weight: 700; flex: 0 0 26px;
}
.sync-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--fg-dim); }
.sync-dot.on { background: var(--primary); box-shadow: 0 0 0 3px rgba(16,163,127,.18); }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar {
  height: 52px; display: flex; align-items: center; gap: 8px; padding: 0 12px;
  border-bottom: 1px solid var(--line); background: var(--bg);
}
.topbar .title { flex: 1; font-size: 14px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.icon-btn {
  width: 34px; height: 34px; border-radius: 9px; border: 1px solid transparent;
  background: transparent; color: var(--fg); display: grid; place-items: center; font-size: 16px;
}
.icon-btn:hover { background: var(--panel-2); }
.hamburger { display: none; }

.chat-scroll { flex: 1; overflow-y: auto; scroll-behavior: smooth; }
.chat-inner { max-width: 780px; margin: 0 auto; padding: 20px 16px 8px; display: flex; flex-direction: column; gap: 18px; }

.welcome { text-align: center; padding: 12vh 10px 0; color: var(--fg-dim); }
.welcome h2 { color: var(--fg); font-size: 22px; margin: 0 0 8px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 18px; }
.chip {
  border: 1px solid var(--line); background: var(--panel); border-radius: 20px;
  padding: 7px 13px; font-size: 13px; color: var(--fg);
}
.chip:hover { border-color: var(--primary); }

.msg { display: flex; gap: 10px; }
.msg .av {
  width: 28px; height: 28px; border-radius: 8px; flex: 0 0 28px; display: grid; place-items: center;
  font-size: 13px; font-weight: 700; background: var(--panel-2); border: 1px solid var(--line);
}
.msg.user .av { background: var(--primary); border-color: var(--primary); color: #fff; }
.msg .body { flex: 1; min-width: 0; }
.msg .head { font-size: 12px; color: var(--fg-dim); margin-bottom: 3px; display: flex; gap: 8px; align-items: center; }
.msg .content { word-wrap: break-word; overflow-wrap: break-word; }
.msg .content p { margin: 0 0 10px; }
.msg .content p:last-child { margin-bottom: 0; }
.msg .content pre {
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  padding: 12px; overflow-x: auto; font-size: 12.5px; line-height: 1.55; position: relative;
}
.msg .content code { background: var(--panel-2); padding: 1px 5px; border-radius: 5px; font-size: 12.5px; }
.msg .content pre code { background: none; padding: 0; }
.msg .content table { border-collapse: collapse; margin: 8px 0; display: block; overflow-x: auto; }
.msg .content th, .msg .content td { border: 1px solid var(--line); padding: 6px 10px; }
.msg .content blockquote { margin: 8px 0; padding-left: 12px; border-left: 3px solid var(--line); color: var(--fg-dim); }
.msg .content ul, .msg .content ol { padding-left: 22px; }
.msg .reason {
  border-left: 2px solid var(--line); padding-left: 10px; color: var(--fg-dim);
  font-size: 13px; margin-bottom: 8px; white-space: pre-wrap;
}
.msg .acts { display: flex; gap: 4px; margin-top: 4px; opacity: 0; transition: opacity .15s; }
.msg:hover .acts { opacity: 1; }
.msg .acts button {
  border: none; background: transparent; color: var(--fg-dim); font-size: 12px;
  padding: 2px 6px; border-radius: 6px;
}
.msg .acts button:hover { background: var(--panel-2); color: var(--fg); }
.msg.error .content { color: var(--danger); }
.msg .retry { color: var(--primary); font-size: 12.5px; background: none; border: none; padding: 0; }
.caret { display: inline-block; width: 7px; height: 15px; background: var(--primary); vertical-align: -3px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.composer-wrap { padding: 6px 12px calc(12px + env(safe-area-inset-bottom)); background: linear-gradient(180deg, transparent, var(--bg) 30%); }
.composer {
  max-width: 780px; margin: 0 auto; background: var(--panel); border: 1px solid var(--line);
  border-radius: 16px; padding: 10px 10px 8px 14px; display: flex; flex-direction: column; gap: 6px;
}
.composer:focus-within { border-color: var(--primary); }
.composer textarea {
  width: 100%; background: transparent; border: none; outline: none; resize: none;
  font-size: 15px; line-height: 1.6; max-height: 40vh; min-height: 24px; padding: 2px 0;
}
.composer .bar { display: flex; align-items: center; gap: 8px; }
.composer .hintline { font-size: 11px; color: var(--fg-dim); flex: 1; }
.send-btn {
  width: 34px; height: 34px; border-radius: 10px; border: none; background: var(--primary);
  color: #fff; display: grid; place-items: center; font-size: 16px;
}
.send-btn:disabled { background: var(--panel-2); color: var(--fg-dim); }
.send-btn.stop { background: var(--danger); }

/* ---------- 抽屉 / 弹窗 ---------- */
.overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 100;
  display: flex; justify-content: flex-end;
  /* iOS/旧 WebKit 不会重绘没有合成层的 fixed 层，必须显式提升 */
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
}
@keyframes fade { from { opacity: 0; } }
.drawer {
  width: min(430px, 100vw); height: 100%; background: var(--panel);
  border-left: 1px solid var(--line); display: flex; flex-direction: column;
}
.drawer-head, .modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 16px; border-bottom: 1px solid var(--line); font-weight: 600;
}
.drawer-body { padding: 14px 16px 40px; overflow-y: auto; display: flex; flex-direction: column; gap: 14px; }
.modal-wrap {
  position: fixed; inset: 0; z-index: 120; background: rgba(0,0,0,.45);
  transform: translateZ(0);
  display: flex; align-items: center; justify-content: center; padding: 16px;
}
.modal {
  width: min(520px, 100%); max-height: 88vh; background: var(--panel);
  border: 1px solid var(--line); border-radius: 16px; display: flex; flex-direction: column;
}
.modal-body { padding: 16px; overflow-y: auto; display: flex; flex-direction: column; gap: 12px; }
.modal-foot { padding: 12px 16px; border-top: 1px solid var(--line); display: flex; justify-content: flex-end; gap: 8px; }

/* 模型菜单 */
.model-btn {
  border: 1px solid var(--line); background: var(--panel); border-radius: 9px;
  padding: 6px 10px; font-size: 12.5px; max-width: 220px; overflow: hidden;
  text-overflow: ellipsis; white-space: nowrap;
}
.popover {
  position: absolute; z-index: 90; transform: translateZ(0); background: var(--panel); border: 1px solid var(--line);
  border-radius: 12px; box-shadow: 0 12px 40px rgba(0,0,0,.35); padding: 6px;
  min-width: 240px; max-height: 60vh; overflow-y: auto;
}
.popover .group { font-size: 11px; color: var(--fg-dim); padding: 7px 8px 3px; }
.popover .item { padding: 8px 10px; border-radius: 8px; font-size: 13.5px; cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.popover .item:hover { background: var(--panel-2); }
.popover .item.active { background: rgba(16,163,127,.15); color: var(--primary); }

/* ---------- 管理后台 ---------- */
.admin { height: 100%; overflow-y: auto; }
.admin-head {
  position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 10px;
  padding: 12px 18px; background: var(--panel); border-bottom: 1px solid var(--line); flex-wrap: wrap;
}
.admin-head h1 { font-size: 16px; margin: 0; flex: 1; min-width: 150px; }
.admin-tabs { display: flex; gap: 6px; padding: 12px 18px 0; flex-wrap: wrap; }
.admin-tabs button {
  border: none; background: transparent; color: var(--fg); opacity: .6;
  padding: 8px 14px; border-radius: 9px; font-size: 13.5px;
}
.admin-tabs button.active { background: var(--primary); color: #fff; opacity: 1; }
.admin-body { max-width: 980px; margin: 0 auto; padding: 16px 18px 80px; display: flex; flex-direction: column; gap: 16px; }
.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 16px; display: flex; flex-direction: column; gap: 12px;
}
.panel h3 { margin: 0; font-size: 14px; display: flex; align-items: center; gap: 8px; }
.panel h3 .grow { flex: 1; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; }
.stat { background: var(--panel-2); border-radius: 10px; padding: 12px; }
.stat b { display: block; font-size: 22px; line-height: 1.2; }
.stat span { font-size: 12px; color: var(--fg-dim); }

table.tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
.tbl th, .tbl td { text-align: left; padding: 9px 6px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.tbl th { color: var(--fg-dim); font-weight: 500; font-size: 12px; }
.tbl tr:hover td { background: var(--panel-2); }
.tbl input, .tbl select { padding: 5px 7px; border-radius: 7px; border: 1px solid var(--line); background: var(--panel-2); color: inherit; font-size: 12.5px; max-width: 160px; }
.tag { display: inline-block; font-size: 11px; padding: 2px 8px; border-radius: 20px; background: var(--panel-2); color: var(--fg-dim); }
.tag.on { background: rgba(16,163,127,.15); color: var(--primary); }
.tag.warn { background: rgba(245,165,36,.15); color: #f5a524; }
.model-card { border: 1px solid var(--line); border-radius: 12px; padding: 12px; display: flex; flex-direction: column; gap: 10px; }
.model-card .head { display: flex; align-items: center; gap: 8px; }
.model-card .head input { flex: 1; font-weight: 600; }
.msgbox { font-size: 12.5px; line-height: 1.6; padding: 9px 11px; border-radius: 9px; background: var(--panel-2); word-break: break-word; }
.chatlog { background: var(--panel-2); border-radius: 10px; padding: 12px; max-height: 55vh; overflow-y: auto; font-size: 13px; }
.chatlog .u { color: var(--primary); font-weight: 600; margin-top: 10px; white-space: pre-wrap; }
.chatlog .b { white-space: pre-wrap; color: var(--fg); margin-bottom: 4px; }
.chatlog .sess-title { font-size: 12px; color: var(--fg-dim); border-top: 1px dashed var(--line); margin-top: 12px; padding-top: 8px; }
.switch { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--fg-dim); cursor: pointer; }
.switch input { width: 18px; height: 18px; accent-color: var(--primary); }

/* ---------- 移动端 ---------- */
@media (max-width: 760px) {
  .sidebar {
    position: fixed; z-index: 80; height: 100%; left: 0; top: 0;
    margin-left: calc(-1 * var(--sidebar-w)); box-shadow: 20px 0 50px rgba(0,0,0,.4);
  }
  .shell.sidebar-open .sidebar { margin-left: 0; }
  .shell.sidebar-open::after {
    content: ""; position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 70;
  }
  .hamburger { display: grid; }
  #side-close { display: grid; }
  .chat-inner { padding: 14px 12px 8px; }
  .model-btn { max-width: 130px; }
  .tbl .hide-sm { display: none; }
}