/* =========================================================
   AI 绘图工作室 v2 — 样式
   登录 / 安装 / 主应用（侧栏+对话） / 管理后台
   玻璃拟态 + 极光渐变 + 暗/亮双主题 + 移动端抽屉
   ========================================================= */

:root {
  --accent-1: #818cf8; --accent-2: #a78bfa; --accent-3: #ec4899;
  --accent-grad: linear-gradient(135deg, var(--accent-1), var(--accent-2) 45%, var(--accent-3));
  --radius: 20px; --radius-sm: 14px;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", "Noto Sans SC", Roboto, Helvetica, Arial, sans-serif;
  --sidebar-w: 280px;
}
html[data-theme="dark"] {
  --bg:#080912; --bg-2:#0d0f1d; --text:#e9ebf6; --text-muted:#969cb6;
  --glass:rgba(255,255,255,.045); --glass-strong:rgba(255,255,255,.07);
  --border:rgba(255,255,255,.09); --border-strong:rgba(255,255,255,.16);
  --bubble-ai:rgba(255,255,255,.055); --shadow:0 18px 50px -12px rgba(0,0,0,.65);
  --code-bg:rgba(0,0,0,.35); --side-bg:rgba(13,15,29,.72); color-scheme:dark;
}
html[data-theme="light"] {
  --bg:#f8f9fd; --bg-2:#fff; --text:#181a26; --text-muted:#61667e;
  --glass:rgba(255,255,255,.62); --glass-strong:rgba(255,255,255,.88);
  --border:rgba(20,22,40,.055); --border-strong:rgba(20,22,40,.11);
  --bubble-ai:rgba(255,255,255,.88); --shadow:0 18px 50px -18px rgba(40,44,90,.2);
  --code-bg:rgba(20,22,40,.06); --side-bg:rgba(255,255,255,.82); color-scheme:light;
}

* { box-sizing:border-box; }
html, body { height:100%; margin:0; }
body {
  font-family:var(--font); background:var(--bg); color:var(--text);
  line-height:1.6; -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  min-height:100dvh; transition:background .4s var(--ease), color .4s var(--ease);
}

/* 极光背景 */
.aurora { position:fixed; inset:0; z-index:-1; overflow:hidden;
  background:radial-gradient(120% 120% at 50% -10%, var(--bg-2), var(--bg) 60%); }
.aurora span { position:absolute; width:50vw; height:50vw; border-radius:50%; filter:blur(90px); opacity:.5;
  animation:float 22s var(--ease) infinite alternate; }
.aurora span:nth-child(1){ top:-12%; left:-6%; background:var(--accent-1); }
.aurora span:nth-child(2){ top:18%; right:-12%; background:var(--accent-3); animation-delay:-7s; }
.aurora span:nth-child(3){ bottom:-22%; left:28%; background:var(--accent-2); animation-delay:-13s; }
html[data-theme="dark"] .aurora {
  background:
    radial-gradient(120% 120% at 50% -10%, #111421, #090a13 64%, #080912 100%);
}
html[data-theme="dark"] .aurora span { opacity:.32; filter:blur(118px); }
html[data-theme="dark"] .aurora span:nth-child(1){ background:#7f8cff; opacity:.30; }
html[data-theme="dark"] .aurora span:nth-child(2){ background:#8b7cf6; opacity:.20; }
html[data-theme="dark"] .aurora span:nth-child(3){ background:#9b8cf8; opacity:.24; }
html[data-theme="light"] .aurora span { opacity:.18; }
@keyframes float { 0%{transform:translate(0,0) scale(1);} 50%{transform:translate(6%,8%) scale(1.12);} 100%{transform:translate(-5%,-6%) scale(.95);} }

button { font-family:inherit; }
.muted { color:var(--text-muted); }

/* 按钮 */
.btn-primary {
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  width:100%; padding:13px 18px; border:none; border-radius:14px; cursor:pointer;
  background:var(--accent-grad); color:#fff; font-size:15px; font-weight:600;
  box-shadow:0 10px 24px -8px rgba(168,85,247,.6); transition:transform .18s var(--ease), filter .2s;
  text-decoration:none;
}
.btn-primary:hover { transform:translateY(-2px); }
.btn-primary:active { transform:scale(.97); }
.btn-ghost { display:inline-flex; align-items:center; justify-content:center; color:var(--text-muted); text-decoration:none; padding:8px 14px; border-radius:10px;
  border:1px solid var(--border); background:transparent; cursor:pointer; font:inherit; transition:.2s; }
.btn-ghost:hover { color:var(--text); border-color:var(--border-strong); }

.alert { background:color-mix(in srgb,#ff5a5a 12%,transparent); border:1px solid color-mix(in srgb,#ff5a5a 32%,transparent);
  color:#ff8a8a; padding:10px 14px; border-radius:12px; font-size:14px; margin-bottom:16px; }

/* =========================================================
   登录 / 安装卡片
   ========================================================= */
.auth-body { display:flex; min-height:100dvh; }
.auth-body { align-items:center; justify-content:center; padding:24px; }
.auth-card {
  width:100%; max-width:400px; padding:36px 32px; border-radius:24px;
  background:var(--glass-strong); border:1px solid var(--border);
  backdrop-filter:blur(24px) saturate(160%); -webkit-backdrop-filter:blur(24px) saturate(160%);
  box-shadow:var(--shadow); text-align:center; animation:rise .6s var(--ease) both;
}
.install-card { max-width:560px; text-align:left; }
.auth-logo { width:60px; height:60px; margin:0 auto 18px; filter:drop-shadow(0 8px 20px rgba(129,140,248,.5)); }
.install-card .auth-logo { margin:0 0 14px; }
.auth-logo svg { width:100%; height:100%; }
.auth-logo img { width:100%; height:100%; object-fit:contain; display:block; }
.auth-card h1 { font-size:23px; margin:0 0 6px; font-weight:750; }
.auth-sub { color:var(--text-muted); font-size:14px; margin:0 0 22px; }
.auth-form, .install-form { display:flex; flex-direction:column; gap:14px; text-align:left; }
.login-mode-panel { display:flex; flex-direction:column; gap:14px; }
.login-mode-panel[hidden] { display:none !important; }
.auth-form[data-login-mode="account"] .login-card-panel { display:none !important; }
.auth-form[data-login-mode="card"] .login-account-panel { display:none !important; }
.auth-tabs { display:grid; grid-template-columns:1fr 1fr; gap:8px; margin:0 0 16px; padding:4px; border:1px solid var(--border); border-radius:14px; background:var(--glass); }
.auth-tab { min-height:36px; border:none; border-radius:10px; background:transparent; color:var(--text-muted); cursor:pointer; font:inherit; font-size:13px; font-weight:700; }
.auth-tab.active { background:var(--accent-grad); color:#fff; box-shadow:0 8px 18px -12px rgba(129,140,248,.65); }
.field { display:flex; flex-direction:column; gap:6px; }
.field span { font-size:13px; color:var(--text-muted); }
.auth-form input, .install-form input, .install-form select {
  width:100%; padding:12px 14px; border-radius:12px; border:1px solid var(--border);
  background:var(--glass); color:var(--text); font-size:15px; outline:none; transition:border-color .2s;
}
.auth-form input:focus, .install-form input:focus { border-color:color-mix(in srgb,var(--accent-2) 55%,var(--border)); }
.auth-foot { margin:18px 0 0; font-size:12.5px; color:var(--text-muted); text-align:center; }
.auth-icp { position:fixed; left:0; right:0; bottom:18px; z-index:1; padding:0 16px; text-align:center;
  font-size:12px; color:color-mix(in srgb,var(--text-muted) 78%,transparent); }
.auth-icp a { color:inherit; text-decoration:none; }
.auth-icp a:hover { color:var(--text); text-decoration:underline; }
.auth-form .btn-primary { margin-top:6px; }

/* 安装表单 */
.install-form label { display:flex; flex-direction:column; gap:6px; font-size:13px; color:var(--text-muted); }
.form-section { font-size:13px; font-weight:700; color:var(--text); margin:10px 0 -2px; padding-top:10px; border-top:1px solid var(--border); }
.grid2 { display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.codebox { width:100%; font-family:ui-monospace,Menlo,Consolas,monospace; font-size:12px; padding:12px;
  border-radius:12px; border:1px solid var(--border); background:var(--code-bg); color:var(--text); }
code { font-family:ui-monospace,Menlo,Consolas,monospace; font-size:.9em; padding:1px 6px; border-radius:6px; background:var(--code-bg); }

/* =========================================================
   主应用布局：侧栏 + 主区
   ========================================================= */
body.app { display:flex; height:100dvh; overflow:hidden; }

.sidebar {
  width:var(--sidebar-w); flex:0 0 var(--sidebar-w); height:100dvh;
  display:flex; flex-direction:column; gap:8px; padding:16px 12px;
  background:var(--side-bg); border-right:1px solid var(--border);
  backdrop-filter:blur(20px) saturate(160%); -webkit-backdrop-filter:blur(20px) saturate(160%);
  z-index:30; transition:transform .3s var(--ease), margin-left .3s var(--ease);
}
/* 桌面端收起：整体滑出左侧，主区占满 */
@media (min-width:821px) {
  body.side-collapsed .sidebar { margin-left:calc(0px - var(--sidebar-w)); transform:translateX(-30px); visibility:hidden; transition:transform .3s var(--ease), margin-left .3s var(--ease), visibility 0s .3s; }
}
.side-head { display:flex; flex-direction:column; align-items:center; gap:14px; padding:8px 6px 4px; }
.brand { width:100%; max-width:240px; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:6px; text-align:center; }
.logo { width:38px; height:38px; flex:0 0 auto; filter:drop-shadow(0 6px 14px rgba(129,140,248,.4)); }
.logo svg { width:100%; height:100%; display:block; }
.logo img { width:100%; height:100%; object-fit:contain; display:block; }
.brand-name { display:block; width:100%; font-weight:780; font-size:15.5px; line-height:1.2; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }

.btn-new {
  width:100%; max-width:240px;
  display:flex; align-items:center; justify-content:center; gap:8px;
  padding:11px; border-radius:13px; cursor:pointer; font-size:14.5px; font-weight:600; color:#fff;
  background:var(--accent-grad); border:none; box-shadow:0 8px 20px -8px rgba(168,85,247,.55);
  transition:transform .18s var(--ease);
}
.btn-new:hover { transform:translateY(-1px); }
.btn-new svg { width:18px; height:18px; fill:none; stroke:#fff; stroke-width:2.4; stroke-linecap:round; }

.conv-list { flex:1 1 auto; overflow-y:auto; display:flex; flex-direction:column; gap:3px; padding:6px 2px; margin:2px 0;
  scrollbar-width:thin; scrollbar-color:var(--border-strong) transparent; }
.conv-list::-webkit-scrollbar { width:8px; }
.conv-list::-webkit-scrollbar-thumb { background:var(--border-strong); border-radius:8px; border:2px solid transparent; background-clip:padding-box; }
.conv-empty { color:var(--text-muted); font-size:13px; text-align:center; padding:24px 10px; }

.conv-item {
  display:flex; align-items:center; gap:8px; padding:10px 10px; border-radius:11px; cursor:pointer;
  color:var(--text); position:relative; transition:background .18s; border:1px solid transparent;
}
.conv-item:hover { background:var(--glass-strong); }
.conv-item.active { background:var(--glass-strong); border-color:var(--border-strong); }
.conv-item .ci-title { flex:1 1 auto; font-size:14px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.conv-item .ci-del { flex:0 0 auto; width:26px; height:26px; border-radius:8px; border:none; background:transparent;
  color:var(--text-muted); cursor:pointer; display:grid; place-items:center; opacity:0; transition:.18s; }
.conv-item:hover .ci-del { opacity:1; }
.conv-item .ci-del:hover { background:color-mix(in srgb,#ff5a5a 18%,transparent); color:#ff7a7a; }
.conv-item .ci-del svg { width:15px; height:15px; fill:none; stroke:currentColor; stroke-width:2; stroke-linecap:round; }

.side-foot { flex:0 0 auto; border-top:1px solid var(--border); padding-top:10px; display:flex; flex-direction:column; gap:8px; }
.user-chip { display:flex; align-items:center; gap:10px; padding:6px 6px; }
.user-ava { width:38px; height:38px; border-radius:11px; background:var(--accent-grad); color:#fff;
  display:grid; place-items:center; font-weight:700; font-size:17px; text-transform:uppercase; flex:0 0 auto; }
.user-meta { min-width:0; }
.user-name { font-size:14px; font-weight:600; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.user-quota { font-size:12px; color:var(--text-muted); }
.tag-admin { font-size:10.5px; padding:1px 7px; border-radius:999px; background:var(--accent-grad); color:#fff; vertical-align:middle; }
.side-actions { display:flex; flex-direction:column; gap:2px; }
.side-btn { display:flex; align-items:center; gap:9px; padding:9px 10px; border-radius:10px; cursor:pointer;
  background:transparent; border:none; color:var(--text-muted); font-size:13.5px; text-decoration:none; text-align:left; transition:.18s; width:100%; }
.side-btn:hover { background:var(--glass-strong); color:var(--text); }
.side-btn svg { width:17px; height:17px; fill:none; stroke:currentColor; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; flex:0 0 auto; }
.side-btn .i-sun { display:none; }
html[data-theme="light"] .side-btn .i-sun { display:block; }
html[data-theme="light"] .side-btn .i-moon { display:none; }

.backdrop { position:fixed; inset:0; background:rgba(4,5,12,.5); backdrop-filter:blur(3px); z-index:25;
  opacity:0; pointer-events:none; transition:opacity .3s; }
.backdrop.show { opacity:1; pointer-events:auto; }

/* 主区 */
.main { flex:1 1 auto; display:flex; flex-direction:column; min-width:0; height:100dvh; }
.app-top { flex:0 0 auto; position:relative; display:flex; align-items:center; justify-content:center; gap:12px; min-height:57px; padding:14px clamp(14px,3vw,26px);
  border-bottom:1px solid var(--border); background:var(--glass); backdrop-filter:blur(14px); }
html[data-theme="light"] .app-top { background:rgba(255,255,255,.66); border-bottom-color:rgba(20,22,40,.045); }
.app-title { flex:0 1 auto; max-width:min(760px, calc(100% - 32px)); text-align:center; font-weight:650; font-size:15.5px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.icon-btn { width:40px; height:40px; display:grid; place-items:center; border-radius:11px; border:1px solid var(--border);
  background:var(--glass); color:var(--text); cursor:pointer; flex:0 0 auto; transition:.2s; }
.icon-btn:hover { background:var(--glass-strong); }
.icon-btn svg { width:20px; height:20px; fill:none; stroke:currentColor; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; }
.only-mobile { display:none; }
/* 侧栏收起/展开按钮：常驻顶栏左侧 */
.app-top .side-toggle { position:absolute; left:clamp(14px,3vw,26px); top:50%; transform:translateY(-50%); color:var(--text-muted); }
.app-top .side-toggle:hover { color:var(--text); }

.stage { flex:1 1 auto; overflow-y:auto; overflow-x:hidden; scroll-behavior:smooth;
  scrollbar-width:thin; scrollbar-color:var(--border-strong) transparent; }
.stage.instant-scroll { scroll-behavior:auto !important; }
.stage::-webkit-scrollbar { width:10px; }
.stage::-webkit-scrollbar-thumb { background:var(--border-strong); border-radius:10px; border:3px solid transparent; background-clip:padding-box; }
.thread { max-width:860px; margin:0 auto; padding:26px clamp(14px,4vw,24px) 16px; min-height:100%; }

/* 欢迎页 */
.welcome { text-align:center; padding:clamp(24px,7vh,72px) 8px 26px; animation:rise .7s var(--ease) both; }
.welcome-logo { display:block; height:64px; width:auto; max-width:78%; margin:0 auto 22px; object-fit:contain;
  filter:drop-shadow(0 8px 22px rgba(129,140,248,.28)); }
.welcome-title { font-size:clamp(28px,6vw,46px); line-height:1.12; margin:0 0 14px; font-weight:800; letter-spacing:-.5px;
  background:linear-gradient(180deg,var(--text),color-mix(in srgb,var(--text) 55%,transparent));
  -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; }
.welcome-sub { color:var(--text-muted); font-size:15px; margin:0 0 30px; }
.suggestions { display:flex; justify-content:center; flex-wrap:wrap; gap:12px; max-width:100%; margin:0 auto; }
.chip-card { width:min(360px,100%); min-height:64px; display:flex; align-items:center; justify-content:center; gap:12px; padding:15px 20px; border-radius:18px;
  border:1px solid var(--border); background:linear-gradient(135deg,var(--glass-strong),var(--glass)); backdrop-filter:blur(14px); color:var(--text);
  font-size:15.5px; font-weight:700; cursor:pointer; text-align:left; box-shadow:0 16px 34px -28px rgba(40,44,90,.45);
  transition:transform .22s var(--ease), border-color .22s, background .22s, box-shadow .22s; }
.chip-card:hover { transform:translateY(-2px); border-color:var(--border-strong); background:var(--glass-strong); box-shadow:var(--shadow); }
.chip-card > span:last-child { min-width:0; white-space:nowrap; }
.chip-icon { width:36px; height:36px; border-radius:13px; display:grid; place-items:center; flex:0 0 auto;
  background:linear-gradient(135deg,#ff4b65,#ec4899); color:#fff; box-shadow:0 12px 24px -12px rgba(236,72,153,.72); }
.chip-icon svg { width:20px; height:20px; fill:none; stroke:currentColor; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; }

/* 消息 */
.messages { display:flex; flex-direction:column; gap:22px; }
.msg { display:flex; gap:13px; animation:rise .45s var(--ease) both; }
.msg.user { flex-direction:row-reverse; }
.avatar { width:36px; height:36px; flex:0 0 auto; border-radius:11px; display:grid; place-items:center; font-size:16px; border:1px solid var(--border); }
.msg.assistant .avatar { background:var(--accent-grad); box-shadow:0 6px 16px -4px rgba(129,140,248,.5); }
.msg.assistant .avatar svg { width:20px; height:20px; fill:#fff; }
.msg.user .avatar { background:var(--glass-strong); color:var(--text); }
.msg-content { max-width:min(78%,620px); display:flex; flex-direction:column; align-items:flex-start; gap:6px; }
.msg.user .msg-content { align-items:flex-end; }
.bubble { width:100%; padding:13px 16px; border-radius:18px; font-size:15px; position:relative; word-break:break-word; overflow-wrap:anywhere; }
.msg.user .bubble { background:var(--accent-grad); color:#fff; border-bottom-right-radius:6px; box-shadow:0 10px 24px -10px rgba(168,85,247,.55); }
.msg.assistant .bubble { background:var(--bubble-ai); border:1px solid var(--border); border-bottom-left-radius:6px; backdrop-filter:blur(10px); }
.bubble p { margin:0 0 8px; } .bubble p:last-child { margin-bottom:0; }
.bubble strong { font-weight:700; }
.msg-meta { display:flex; align-items:center; gap:8px; flex-wrap:wrap; color:var(--text-muted); font-size:12px; line-height:1.2; }
.msg.user .msg-meta { justify-content:flex-end; }
.msg-time { opacity:.86; }
.msg-copy { border:1px solid var(--border); background:var(--glass); color:var(--text-muted); border-radius:999px; padding:4px 10px;
  font-size:12px; line-height:1.2; cursor:pointer; transition:.18s; }
.msg-copy:hover { color:var(--text); border-color:var(--border-strong); background:var(--glass-strong); }

/* =========================================================
   用户端额度页面
   ========================================================= */
.quota-body { min-height:100dvh; padding:24px clamp(14px,4vw,34px) 56px; }
.quota-wrap { width:100%; max-width:1080px; margin:0 auto; }
.quota-head { display:flex; align-items:flex-end; justify-content:space-between; gap:16px; margin-bottom:22px; }
.quota-brand { display:flex; align-items:center; gap:14px; min-width:0; }
.quota-brand img { width:46px; height:46px; object-fit:contain; filter:drop-shadow(0 8px 20px rgba(129,140,248,.36)); }
.quota-brand h1 { margin:0; font-size:24px; line-height:1.2; font-weight:780; }
.quota-brand p { margin:4px 0 0; color:var(--text-muted); font-size:13px; }
.quota-head-actions { display:flex; align-items:center; gap:10px; flex-wrap:wrap; }
.quota-panel { background:var(--glass-strong); border:1px solid var(--border); border-radius:20px; padding:22px;
  box-shadow:var(--shadow); backdrop-filter:blur(20px); margin-bottom:18px; }
.quota-overview { display:grid; grid-template-columns:repeat(4,1fr); gap:14px; }
.quota-stat { padding:16px 14px; border-radius:16px; border:1px solid var(--border); background:var(--glass); }
.quota-stat span { display:block; color:var(--text-muted); font-size:12.5px; margin-bottom:6px; }
.quota-stat b { display:block; font-size:28px; line-height:1.1; color:var(--text); }
.quota-explain-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:14px; }
.quota-explain-grid div { padding:14px 16px; border-radius:16px; border:1px solid var(--border); background:var(--glass); }
.quota-explain-grid span { display:block; color:var(--text-muted); font-size:12.5px; margin-bottom:5px; }
.quota-explain-grid b { display:block; color:var(--text); font-size:17px; line-height:1.2; }
.quota-section-head { display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom:14px; }
.quota-section-head h2 { margin:0; font-size:17px; line-height:1.2; }
.quota-section-head span { color:var(--text-muted); font-size:13px; }
.quota-table-wrap { overflow-x:auto; }
.quota-table { width:100%; min-width:760px; border-collapse:collapse; font-size:13.5px; }
.quota-table th, .quota-table td { text-align:left; padding:12px 10px; border-bottom:1px solid var(--border); white-space:nowrap; }
.quota-table th { color:var(--text-muted); font-weight:650; }
.quota-table tr:last-child td { border-bottom:none; }
.q-prompt { max-width:360px; overflow:hidden; text-overflow:ellipsis; }
.q-status { display:inline-flex; align-items:center; justify-content:center; min-width:56px; padding:3px 9px; border-radius:999px;
  font-size:12px; border:1px solid var(--border); color:var(--text-muted); background:var(--glass); }
.q-status-done { color:#4ade80; border-color:color-mix(in srgb,#22c55e 35%,var(--border)); }
.q-status-error { color:#fb7185; border-color:color-mix(in srgb,#ef4444 35%,var(--border)); }
.q-status-running, .q-status-pending { color:#a78bfa; border-color:color-mix(in srgb,#a78bfa 35%,var(--border)); }
.q-credit { display:inline-flex; align-items:center; justify-content:center; min-width:68px; padding:3px 9px; border-radius:999px;
  font-size:12px; border:1px solid var(--border); background:var(--glass); }
.q-credit-use { color:#fb7185; border-color:color-mix(in srgb,#ef4444 28%,var(--border)); }
.q-credit-back { color:#22c55e; border-color:color-mix(in srgb,#22c55e 32%,var(--border)); }
.quota-log-list { border:1px solid var(--border); border-radius:16px; overflow:hidden; background:var(--glass); }
.quota-log-item { display:grid; grid-template-columns:1fr auto; gap:14px; padding:14px 16px; border-bottom:1px solid var(--border); align-items:center; }
.quota-log-item:last-child { border-bottom:none; }
.quota-log-item b { display:block; font-size:14px; color:var(--text); }
.quota-log-item span { display:block; font-size:12.5px; color:var(--text-muted); margin-top:2px; }
.quota-log-item p { margin:4px 0 0; color:var(--text-muted); font-size:12.5px; }
.quota-log-right { text-align:right; }
.quota-log-right strong { display:block; font-size:17px; line-height:1.1; color:var(--text-muted); }
.quota-log-right strong.pos { color:#4ade80; }
.quota-log-right strong.neg { color:#fb7185; }
.quota-empty-state { padding:20px; text-align:center; color:var(--text-muted); border:1px dashed var(--border); border-radius:16px; background:var(--glass); }

.img-card { margin:4px 0 2px; border-radius:18px; overflow:visible; position:relative; border:1px solid var(--border);
  background:var(--bubble-ai); line-height:normal; max-width:420px; padding:12px; }
.img-frame { position:relative; line-height:0; aspect-ratio:4 / 5; display:flex; align-items:center; justify-content:center;
  border-radius:12px; overflow:hidden; background:color-mix(in srgb,var(--glass) 70%,transparent); }
.img-card img { width:100%; height:100%; object-fit:contain; display:block; cursor:zoom-in; }
.img-toolbar { position:absolute; top:10px; right:10px; display:flex; gap:8px; opacity:0; transition:opacity .25s var(--ease); }
.img-card:hover .img-toolbar { opacity:1; }
.img-tool { width:36px; height:36px; border-radius:10px; display:grid; place-items:center; background:rgba(10,12,22,.55);
  color:#fff; border:1px solid rgba(255,255,255,.18); backdrop-filter:blur(8px); cursor:pointer; transition:.18s; text-decoration:none; }
.img-tool:hover { background:rgba(10,12,22,.78); transform:translateY(-1px); }
.img-tool svg { width:18px; height:18px; fill:none; stroke:currentColor; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; }
.regen-btn { width:100%; min-height:40px; margin-top:10px; border-radius:12px; border:none;
  background:var(--accent-grad); color:#fff; font-size:13px; font-weight:760; cursor:pointer;
  box-shadow:0 10px 22px -12px rgba(168,85,247,.78); transition:.18s; }
.regen-btn:hover { filter:brightness(1.04); transform:translateY(-1px); box-shadow:0 14px 28px -14px rgba(168,85,247,.9); }
.regen-btn:disabled { opacity:.55; cursor:not-allowed; transform:none; }

.gen-placeholder { margin:4px 0 2px; width:100%; max-width:340px; aspect-ratio:1/1; border-radius:16px; border:1px solid var(--border);
  background:linear-gradient(110deg,var(--code-bg) 30%,var(--glass-strong) 50%,var(--code-bg) 70%); background-size:220% 100%;
  animation:shimmer 1.4s infinite linear; display:grid; place-items:center; gap:12px; color:var(--text-muted); font-size:13px; text-align:center; padding:16px; }
.gen-placeholder .spinner { width:30px; height:30px; border-radius:50%; border:3px solid var(--border-strong); border-top-color:var(--accent-2); animation:spin .8s linear infinite; }
@keyframes shimmer { to { background-position:-220% 0; } }
@keyframes spin { to { transform:rotate(360deg); } }
.err-note { color:#ff8a8a; background:color-mix(in srgb,#ff5a5a 12%,transparent); border:1px solid color-mix(in srgb,#ff5a5a 30%,transparent); padding:9px 13px; border-radius:10px; font-size:14px; }

/* 输入区 */
.composer-wrap { flex:0 0 auto; padding:10px clamp(14px,4vw,24px) calc(14px + env(safe-area-inset-bottom));
  background:linear-gradient(to top,var(--bg) 30%,transparent); }
.composer { max-width:860px; margin:0 auto; }
.composer-tools { display:flex; align-items:center; justify-content:space-between; gap:10px; margin-bottom:10px; flex-wrap:wrap; }
.ratios { display:flex; gap:8px; flex-wrap:wrap; padding-left:4px; }
.ratio { font-size:12.5px; padding:6px 13px; border-radius:999px; border:1px solid var(--border); background:var(--glass);
  color:var(--text-muted); cursor:pointer; transition:.2s var(--ease); }
.ratio:hover { color:var(--text); border-color:var(--border-strong); }
.ratio[data-active="true"] { color:#fff; border-color:transparent; background:var(--accent-grad); box-shadow:0 6px 16px -6px rgba(129,140,248,.6); }

/* 联系上文开关 */
.ctx-toggle { display:inline-flex; align-items:center; gap:7px; cursor:pointer; user-select:none; padding:4px 4px; flex:0 0 auto; }
.ctx-toggle input { position:absolute; opacity:0; width:0; height:0; }
.ctx-switch { position:relative; width:36px; height:20px; border-radius:999px; background:var(--border-strong);
  transition:background .22s var(--ease); flex:0 0 auto; }
.ctx-switch::after { content:""; position:absolute; top:2px; left:2px; width:16px; height:16px; border-radius:50%;
  background:#fff; box-shadow:0 1px 3px rgba(0,0,0,.3); transition:transform .22s var(--ease); }
.ctx-toggle input:checked + .ctx-switch { background:var(--accent-2); }
.ctx-toggle input:checked + .ctx-switch::after { transform:translateX(16px); }
.ctx-toggle input:focus-visible + .ctx-switch { outline:2px solid var(--accent-1); outline-offset:2px; }
.ctx-label { font-size:12.5px; color:var(--text-muted); white-space:nowrap; }
.ctx-toggle input:checked ~ .ctx-label { color:var(--text); }

.ref-preview { max-width:100%; width:max-content; display:flex; align-items:center; gap:10px; margin:0 0 8px 4px; padding:8px 10px;
  border:1px solid var(--border); border-radius:14px; background:var(--glass-strong); box-shadow:0 10px 24px -20px rgba(40,44,90,.4); }
.ref-preview[hidden] { display:none !important; }
.ref-preview img { width:44px; height:44px; border-radius:10px; object-fit:cover; border:1px solid var(--border); flex:0 0 auto; }
.ref-thumb-loading { width:44px; height:44px; flex:0 0 auto; display:grid; place-items:center; border-radius:10px;
  border:1px solid var(--border); background:linear-gradient(135deg,var(--glass),var(--glass-strong)); color:var(--text-muted); }
.ref-thumb-loading svg { width:22px; height:22px; fill:none; stroke:currentColor; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; }
.ref-preview-info { min-width:0; max-width:240px; }
.ref-preview-info b { display:block; color:var(--text); font-size:13px; line-height:1.25; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.ref-preview-info span { display:block; color:var(--text-muted); font-size:11.5px; line-height:1.25; margin-top:2px; }
.ref-progress { width:180px; max-width:100%; height:5px; margin-top:7px; border-radius:999px; background:var(--border); overflow:hidden; }
.ref-progress i { display:block; height:100%; width:0; border-radius:inherit; background:var(--accent-grad); transition:width .16s var(--ease); }
.ref-remove { width:30px; height:30px; flex:0 0 auto; display:grid; place-items:center; border-radius:9px; border:1px solid var(--border);
  background:var(--glass); color:var(--text-muted); cursor:pointer; transition:.18s; }
.ref-remove:hover { color:var(--text); border-color:var(--border-strong); background:var(--glass-strong); }
.ref-remove svg { width:15px; height:15px; fill:none; stroke:currentColor; stroke-width:2.3; stroke-linecap:round; }
.user-ref-card { margin-top:10px; width:min(220px,100%); border:1px solid rgba(255,255,255,.32); border-radius:14px; padding:8px;
  background:rgba(255,255,255,.14); line-height:0; }
.msg.assistant .user-ref-card { border-color:var(--border); background:var(--glass); }
.user-ref-card img { width:100%; max-height:220px; object-fit:contain; display:block; border-radius:10px; cursor:zoom-in; background:rgba(255,255,255,.22); }

.input-row { display:flex; align-items:center; gap:10px; padding:8px 9px 8px 18px; border-radius:var(--radius);
  background:var(--glass-strong); border:1px solid var(--border); backdrop-filter:blur(20px) saturate(160%); box-shadow:var(--shadow); transition:border-color .25s var(--ease); }
.input-row:focus-within { border-color:color-mix(in srgb,var(--accent-2) 55%,var(--border)); }
.attach-btn { flex:0 0 auto; width:42px; height:42px; border-radius:13px; border:1px solid var(--border); background:var(--glass);
  color:var(--text-muted); display:grid; place-items:center; cursor:pointer; transition:.18s; margin-bottom:0; }
.attach-btn:hover { color:var(--text); border-color:var(--border-strong); background:var(--glass-strong); transform:translateY(-1px); }
.attach-btn:disabled { opacity:.45; cursor:not-allowed; transform:none; }
.attach-btn svg { width:20px; height:20px; fill:none; stroke:currentColor; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; }
#input { flex:1 1 auto; min-height:46px; border:none; outline:none; resize:none; background:transparent; color:var(--text); font-family:inherit; font-size:15.5px; line-height:1.45; max-height:168px; padding:10px 0; }
#input::placeholder { color:var(--text-muted); }
.send-btn { flex:0 0 auto; width:46px; height:46px; border-radius:14px; border:none; cursor:pointer; background:var(--accent-grad);
  display:grid; place-items:center; box-shadow:0 8px 20px -6px rgba(168,85,247,.6); transition:transform .18s var(--ease), opacity .2s; }
.send-btn:hover { transform:translateY(-2px) scale(1.03); }
.send-btn:active { transform:scale(.92); }
.send-btn:disabled { opacity:.45; cursor:not-allowed; transform:none; }
.send-btn svg { width:22px; height:22px; fill:#fff; }
.composer-hint { display:flex; align-items:center; gap:8px; justify-content:center; margin-top:9px; font-size:11.5px; color:var(--text-muted); }
.composer-hint .dot { opacity:.5; }

@keyframes rise { from { opacity:0; transform:translateY(14px); } to { opacity:1; transform:none; } }

/* 灯箱 */
.lightbox { position:fixed; inset:0; z-index:100; background:rgba(4,5,12,.86); backdrop-filter:blur(8px); display:grid; place-items:center; padding:24px; opacity:0; pointer-events:none; transition:opacity .25s var(--ease); }
.lightbox.show { opacity:1; pointer-events:auto; }
.lightbox img { max-width:92vw; max-height:88vh; border-radius:14px; box-shadow:0 30px 80px -20px rgba(0,0,0,.8); transform:scale(.96); transition:transform .3s var(--ease); }
.lightbox.show img { transform:scale(1); }

.app-toast { position:fixed; left:50%; bottom:calc(24px + env(safe-area-inset-bottom)); z-index:120;
  transform:translateX(-50%) translateY(10px); opacity:0; pointer-events:none; padding:10px 16px; border-radius:999px;
  background:rgba(24,26,38,.88); color:#fff; font-size:13px; font-weight:650;
  box-shadow:0 16px 36px -18px rgba(24,26,38,.55);
  transition:opacity .2s var(--ease), transform .2s var(--ease); }
.app-toast.show { opacity:1; transform:translateX(-50%) translateY(0); }

/* 用户侧弹窗 */
.app-modal { position:fixed; inset:0; z-index:90; display:grid; place-items:center; padding:22px;
  opacity:0; pointer-events:none; transition:opacity .18s var(--ease); }
.app-modal.show { opacity:1; pointer-events:auto; }
.app-modal-backdrop { position:absolute; inset:0; background:rgba(4,5,12,.58); backdrop-filter:blur(8px); }
.app-modal-panel { position:relative; width:min(420px,100%); padding:22px; border-radius:20px;
  background:var(--glass-strong); border:1px solid var(--border); box-shadow:var(--shadow);
  backdrop-filter:blur(24px) saturate(160%); transform:translateY(10px) scale(.98); transition:transform .2s var(--ease); }
.app-modal.show .app-modal-panel { transform:translateY(0) scale(1); }
.app-modal-head { display:flex; align-items:center; justify-content:space-between; gap:16px; margin-bottom:18px; }
.app-modal-head h2 { margin:0; font-size:18px; line-height:1.2; font-weight:760; }
.app-modal-close { width:36px; height:36px; display:grid; place-items:center; border-radius:10px; border:1px solid var(--border);
  background:var(--glass); color:var(--text-muted); cursor:pointer; transition:.18s; }
.app-modal-close:hover { color:var(--text); border-color:var(--border-strong); background:var(--glass-strong); }
.app-modal-close svg { width:18px; height:18px; fill:none; stroke:currentColor; stroke-width:2.2; stroke-linecap:round; stroke-linejoin:round; }
.password-form { display:flex; flex-direction:column; gap:13px; }
.password-form label { display:flex; flex-direction:column; gap:7px; color:var(--text-muted); font-size:13px; }
.password-form input { width:100%; padding:12px 14px; border-radius:12px; border:1px solid var(--border);
  background:var(--glass); color:var(--text); font-size:15px; outline:none; transition:.18s; }
.password-form input:focus { border-color:color-mix(in srgb,var(--accent-2) 55%,var(--border)); }
.app-modal-actions { display:flex; align-items:center; justify-content:flex-end; gap:10px; margin-top:2px; }
.app-modal-actions .btn-primary, .app-modal-actions .btn-ghost { width:auto; min-width:88px; }

.form-msg { margin-top:10px; font-size:13.5px; color:#ff8a8a; }


.quota-pager { display:flex; align-items:center; justify-content:space-between; gap:14px; flex-wrap:wrap; padding-top:16px; }
.pager-info { color:#6b7088; font-size:12.5px; }
.pager-pages { display:flex; align-items:center; justify-content:flex-end; gap:6px; flex-wrap:wrap; }
.pager-btn { min-width:34px; height:34px; padding:0 11px; display:inline-flex; align-items:center; justify-content:center;
  border-radius:10px; border:1px solid #d8dbe9; background:#fff; color:#2a2f45; font-size:12.5px; font-weight:650;
  text-decoration:none; transition:.18s; }
.pager-btn:hover { border-color:#b9bed4; background:#f3f4fa; }
.pager-btn.active { border-color:transparent; background:var(--accent-grad); color:#fff; box-shadow:0 8px 18px -10px rgba(129,140,248,.68); }
.pager-btn.disabled { color:#a2a8ba; background:#f7f8fc; cursor:not-allowed; }
.pager-ellipsis { color:#8c92aa; padding:0 2px; }


@media (max-width:600px) {
  .composer-wrap { padding:8px 10px calc(10px + env(safe-area-inset-bottom)); }
  .composer-tools { gap:8px; margin-bottom:8px; justify-content:space-between; flex-wrap:nowrap; }
  .ratios { flex:1 1 auto; min-width:0; gap:6px; padding-left:0; flex-wrap:nowrap; overflow-x:auto; scrollbar-width:none; }
  .ratios::-webkit-scrollbar { display:none; }
  .ratio { flex:0 0 auto; font-size:12px; padding:5px 10px; }
  .ctx-toggle { flex:0 0 auto; gap:5px; padding:4px 0; }
  .ctx-switch { width:32px; height:18px; }
  .ctx-switch::after { width:14px; height:14px; }
  .ctx-toggle input:checked + .ctx-switch::after { transform:translateX(14px); }
  .ctx-label { display:inline; font-size:11.5px; }
  .ref-preview { width:100%; margin:0 0 8px; }
  .ref-preview-info { max-width:none; flex:1 1 auto; }
  .input-row { align-items:center; gap:8px; padding:8px 8px 8px 14px; border-radius:18px; box-shadow:0 14px 34px -24px rgba(40,44,90,.42); }
  .attach-btn { width:42px; height:42px; border-radius:13px; margin-bottom:0; }
  #input { min-height:44px; max-height:112px; padding:9px 0; font-size:15px; line-height:1.45; }
  .send-btn { width:44px; height:44px; border-radius:14px; }
  .send-btn:hover { transform:none; }
  .composer-hint { margin-top:6px; font-size:10.5px; gap:5px; }
  .composer-hint span:first-child, .composer-hint .dot { display:none; }
}

/* =========================================================
   响应式：移动端侧栏抽屉
   ========================================================= */
@media (max-width:820px) {
  .sidebar { position:fixed; top:0; left:0; transform:translateX(-100%); box-shadow:var(--shadow); }
  .sidebar.open { transform:translateX(0); }
  .conv-item { padding-right:8px; }
  .conv-item .ci-del { opacity:1; width:34px; height:34px; border:1px solid var(--border); background:var(--glass); color:#fb7185; }
  .conv-item .ci-del svg { width:16px; height:16px; }
  .only-mobile { display:grid; }
  .app-top .only-mobile { position:absolute; left:clamp(14px,3vw,26px); top:50%; transform:translateY(-50%); }
  .app-title { max-width:calc(100% - 112px); }
  .msg-content { max-width:86%; }
  .img-card, .gen-placeholder { max-width:100%; }
  .quota-head { flex-direction:column; align-items:flex-start; }
  .quota-overview { grid-template-columns:1fr 1fr; }
  .quota-explain-grid { grid-template-columns:1fr; }
}
@media (max-width:430px) {
  .chip-card { width:100%; padding:14px 16px; font-size:14.5px; }
  .quota-overview { grid-template-columns:1fr; }
  .quota-log-item { grid-template-columns:1fr; }
  .quota-log-right { text-align:left; }
}
@media (prefers-reduced-motion:reduce) { * { animation-duration:.01ms !important; transition-duration:.01ms !important; } .stage{scroll-behavior:auto;} }