/* 设计变量沿用 shenaai.cc：暗色玻璃态 */
/* 黑白两种、最简单的设计：深色=纯黑底白字，浅色=纯白底黑字；只用灰度，不用彩色；默认跟随系统，可在右上角手动切换 */
:root {
  --bg-dark: #000;
  --bg-light: #0b0b0b;
  --accent-blue: #fff;
  --accent-gold: #fff;
  --accent-purple: #fff;
  --text-primary: #fff;
  --text-secondary: #a3a3a3;
  --glass: #000;
  --border: rgba(255, 255, 255, 0.28);
  --ok: #fff;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --tabbar-h: 62px;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --bg-dark: #fff; --bg-light: #f4f4f4; --accent-blue: #000; --accent-gold: #000; --accent-purple: #000;
    --text-primary: #000; --text-secondary: #525252; --glass: #fff; --border: rgba(0, 0, 0, 0.3); --ok: #000; color-scheme: light;
  }
}
:root[data-theme="light"] {
  --bg-dark: #fff; --bg-light: #f4f4f4; --accent-blue: #000; --accent-gold: #000; --accent-purple: #000;
  --text-primary: #000; --text-secondary: #525252; --glass: #fff; --border: rgba(0, 0, 0, 0.3); --ok: #000; color-scheme: light;
}
:root[data-theme="dark"] { color-scheme: dark; }

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
html, body { height: 100%; }
body {
  background: var(--bg-dark);
  color: var(--text-primary);
  font-family: Inter, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  overflow: hidden;
}
button, input { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; }
button:focus-visible, input:focus-visible, a:focus-visible {
  outline: 2px solid var(--accent-blue); outline-offset: 2px;
}

.app {
  height: 100dvh; max-width: 760px; margin: 0 auto;
  display: flex; flex-direction: column;
  background:
    radial-gradient(900px 400px at 50% -10%, rgba(56, 189, 248, 0.10), transparent 70%),
    var(--bg-dark);
}

/* 顶栏 */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; padding-top: max(10px, env(safe-area-inset-top));
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 8px; font-family: Outfit, Inter, sans-serif; font-weight: 600; font-size: 17px; }
.proto-tag { font-size: 11px; color: var(--accent-gold); border: 1px solid rgba(251, 191, 36, 0.4); padding: 1px 8px; border-radius: 999px; }

/* 舞台与视图 */
.stage { flex: 1; min-height: 0; position: relative; }
.view { position: absolute; inset: 0; display: none; flex-direction: column; overflow-y: auto; }
.view.active { display: flex; animation: fade 0.3s var(--ease); }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
#view-chat { overflow: hidden; }

/* 对话 */
.chat-scroll { flex: 1; overflow-y: auto; padding: 16px; }
.hero { text-align: center; padding: 28px 8px 12px; }
.hero h1 { font-family: Outfit, Inter, sans-serif; font-size: 26px; font-weight: 600; letter-spacing: 0.04em; }
.hero h1 { background: linear-gradient(90deg, var(--text-primary), var(--accent-gold)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { color: var(--text-secondary); margin-top: 6px; }
.suggest { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 18px; }
.chip {
  padding: 7px 14px; border-radius: 999px; font-size: 13px;
  background: var(--glass); border: 1px solid var(--border); color: var(--text-secondary);
  transition: all 0.3s var(--ease);
}
.chip:hover { color: var(--text-primary); border-color: var(--accent-blue); }

.msgs { display: flex; flex-direction: column; gap: 12px; }
.msg { max-width: 88%; padding: 10px 14px; border-radius: 16px; white-space: pre-wrap; word-break: break-word; }
.msg.user { align-self: flex-end; background: linear-gradient(135deg, #0ea5e9, var(--accent-purple)); color: #020617; border-bottom-right-radius: 4px; }
.msg.bot { align-self: flex-start; background: var(--glass); border: 1px solid var(--border); border-bottom-left-radius: 4px; }
.route {
  display: inline-flex; align-items: center; gap: 6px; font-size: 12px; margin-bottom: 6px;
  color: var(--accent-gold);
}
.route::before { content: "太极调度官 →"; color: var(--text-secondary); }
.msg .actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.ai-mark { display: block; margin-top: 8px; font-size: 11px; color: var(--text-secondary); }
.typing span { display: inline-block; width: 6px; height: 6px; margin-right: 4px; border-radius: 50%; background: var(--text-secondary); animation: blink 1s infinite; }
.typing span:nth-child(2) { animation-delay: 0.15s; }
.typing span:nth-child(3) { animation-delay: 0.3s; }
@keyframes blink { 0%, 80%, 100% { opacity: 0.25; } 40% { opacity: 1; } }

.composer {
  display: flex; gap: 8px; padding: 10px 16px 12px;
  border-top: 1px solid var(--border); background: var(--glass); backdrop-filter: blur(12px);
}
.composer input {
  flex: 1; min-width: 0; padding: 11px 16px; border-radius: 999px;
  background: var(--bg-light); border: 1px solid var(--border);
}
.composer input::placeholder { color: var(--text-secondary); }
.composer select { max-width: 135px; border: 1px solid var(--border); border-radius: 12px; background: var(--bg-light); color: var(--text-primary); padding: 7px; }
.workspace-tools { margin-top: 20px; }
.workspace-tools details { margin: 12px 0; padding: 12px; border: 1px solid var(--border); border-radius: 12px; }
.workspace-tools summary { cursor: pointer; font-weight: 600; }
.workspace-tools select, .workspace-tools input { width: 100%; color: var(--text-primary); background: var(--bg-light); border: 1px solid var(--border); padding: 10px; border-radius: 10px; }
.workspace-tools button { margin: 8px 6px 0 0; }
@media (max-width: 480px) { .composer { flex-wrap: wrap; } .composer select { flex-basis: 100%; max-width: 100%; } }
.send {
  width: 44px; height: 44px; border-radius: 50%; font-size: 20px; font-weight: 700;
  background: var(--accent-blue); color: #020617; transition: transform 0.3s var(--ease);
}
.send:active { transform: scale(0.92); }

/* 证据卡片 */
.evi-list { display: flex; flex-direction: column; gap: 8px; margin-top: 10px; }
.evi { background: var(--bg-light); border: 1px solid var(--border); border-radius: 12px; padding: 10px 12px; font-size: 13px; }
.evi blockquote { margin: 8px 0; padding-left: 10px; border-left: 2px solid var(--accent-gold); color: var(--text-primary); white-space: pre-wrap; }
.evi .hash { font-family: Consolas, monospace; font-size: 11px; word-break: break-all; }

.answer { white-space: pre-wrap; margin-bottom: 8px; }
.warn { color: var(--accent-gold); font-size: 12px; margin: 4px 0; }

/* 登录与账号 */
.who { display: flex; align-items: center; gap: 8px; min-width: 0; }
.who-btn { max-width: 56vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12px; padding: 4px 10px;
  border: 1px solid var(--border); border-radius: 999px; background: var(--glass); color: var(--text-primary); }
.who-btn::after { content: " ▾"; color: var(--text-secondary); }
.login-card { max-height: 86vh; overflow-y: auto; }
.login-warn { color: var(--accent-gold); font-size: 13px; margin-bottom: 12px; }
.persona-list { display: flex; flex-direction: column; gap: 8px; }
.persona { text-align: left; padding: 10px 14px; border-radius: 12px; border: 1px solid var(--border); background: var(--bg-dark);
  transition: border-color 0.3s var(--ease); }
.persona:hover, .persona.current { border-color: var(--accent-blue); }
.persona b { display: block; font-size: 14px; }
.persona span { color: var(--text-secondary); font-size: 12px; }

.field { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 10px; }
.field input, .code-row input { display: block; width: 100%; margin-top: 4px; padding: 10px 12px; border-radius: 10px;
  background: var(--bg-dark); border: 1px solid var(--border); color: var(--text-primary); }
.code-row { display: flex; gap: 8px; align-items: stretch; margin-bottom: 10px; }
.code-row input { margin-top: 0; flex: 1; min-width: 0; }
.code-row .btn { white-space: nowrap; min-width: 104px; }
.agree { display: flex; gap: 8px; align-items: flex-start; font-size: 12px; color: var(--text-secondary); margin: 6px 0 12px; }
.agree input { margin-top: 3px; }
.agree a { color: inherit; text-decoration: underline; text-underline-offset: 2px; }
.btn.wide { width: 100%; padding: 11px; }
#devBox { margin-top: 12px; font-size: 13px; }
#devBox summary { cursor: pointer; color: var(--text-secondary); margin-bottom: 8px; }
#inviteTitle { margin: 12px 0 6px; font-size: 14px; }

/* 账号设置 */
.settings-card { width: min(460px, 100%); max-height: 88vh; overflow-y: auto; }
.tabs { display: flex; gap: 6px; margin: 12px 0; flex-wrap: wrap; }
.tab-btn { padding: 6px 14px; border-radius: 999px; border: 1px solid var(--border); font-size: 13px; color: var(--text-secondary); }
.tab-btn.active { color: var(--accent-gold); border-color: rgba(251, 191, 36, 0.5); }
.kv { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.kv span { color: var(--text-secondary); }
.device { margin-top: 10px; }
.row-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 8px; }
.row-actions select, .invite-form select, .invite-form input { padding: 7px 10px; border-radius: 10px; background: var(--bg-dark);
  border: 1px solid var(--border); color: var(--text-primary); font-size: 13px; }
.invite-form { display: flex; flex-direction: column; gap: 8px; }
.invite-token { display: block; word-break: break-all; padding: 8px; margin: 8px 0; border-radius: 8px; background: #010409; font-size: 12px; }
.btn.danger { background: #f87171; color: #020617; }
ul.plain { padding-left: 20px; color: var(--text-secondary); font-size: 13px; margin: 8px 0; }
h4 { margin: 14px 0 6px; font-size: 14px; }

/* 通用组件 */
.page { padding: 16px; display: flex; flex-direction: column; gap: 14px; }
.page h2 { font-family: Outfit, Inter, sans-serif; font-size: 20px; }
.page .sub { color: var(--text-secondary); font-size: 13px; margin-top: -8px; }
.card {
  background: var(--glass); border: 1px solid var(--border); border-radius: 16px; padding: 14px;
  backdrop-filter: blur(10px);
}
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.btn {
  padding: 8px 16px; border-radius: 999px; font-size: 13px; font-weight: 600;
  background: var(--accent-blue); color: #020617; transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.btn:active { transform: scale(0.96); }
.btn.ghost { background: transparent; color: var(--text-primary); border: 1px solid var(--border); }
.btn.gold { background: var(--accent-gold); }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }
.tag { font-size: 11px; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--border); color: var(--text-secondary); }
.tag.gold { color: var(--accent-gold); border-color: rgba(251, 191, 36, 0.4); }
.tag.blue { color: var(--accent-blue); border-color: rgba(56, 189, 248, 0.4); }
.muted { color: var(--text-secondary); font-size: 13px; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 10px; }

/* 智能体 */
.agent .name { font-weight: 600; margin-bottom: 4px; }
.agent p { color: var(--text-secondary); font-size: 12px; min-height: 38px; }
.agent .btn { margin-top: 10px; width: 100%; }

/* API */
.bar { height: 8px; border-radius: 999px; background: var(--bg-light); overflow: hidden; margin-top: 8px; }
.bar > i { display: block; height: 100%; background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple)); border-radius: 999px; transition: width 0.6s var(--ease); }
pre.code {
  background: #010409; border: 1px solid var(--border); border-radius: 12px; padding: 12px;
  font-size: 12px; overflow-x: auto; color: #cbd5e1; font-family: Consolas, "SFMono-Regular", monospace;
}
.key { font-family: Consolas, monospace; font-size: 13px; letter-spacing: 0.02em; }

/* IDE */
.factor { display: grid; grid-template-columns: 76px 1fr 36px; gap: 8px; align-items: center; font-size: 13px; margin-top: 8px; }
.factor .bar { margin-top: 0; }
.asset { cursor: pointer; transition: border-color 0.3s var(--ease); }
.asset.sel { border-color: var(--accent-gold); }
.asset .tier { font-weight: 700; color: var(--accent-gold); }
.result-num { font-family: Outfit, Inter, sans-serif; font-size: 30px; color: var(--accent-gold); }

/* 电子书 */
.shelf { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.book { text-align: left; }
.cover {
  aspect-ratio: 3 / 4; border-radius: 12px; padding: 12px; display: flex; flex-direction: column; justify-content: flex-end;
  border: 1px solid var(--border); font-family: Outfit, "Songti SC", serif; font-weight: 600; font-size: 16px; line-height: 1.3;
}
.book .meta { margin-top: 6px; font-size: 12px; color: var(--text-secondary); }
.reader { line-height: 2; font-family: "Songti SC", "Noto Serif SC", serif; font-size: 17px; }
.reader p { margin-bottom: 12px; text-indent: 2em; }
.reader .ai { font-family: Inter, sans-serif; font-size: 14px; text-indent: 0; }
.back { align-self: flex-start; color: var(--accent-blue); font-size: 14px; }
.lock { color: var(--accent-gold); font-size: 13px; text-align: center; padding: 14px; border: 1px dashed rgba(251, 191, 36, 0.4); border-radius: 12px; }

/* 底部标签 */
.tabbar {
  display: grid; grid-template-columns: repeat(4, 1fr);
  height: calc(var(--tabbar-h) + env(safe-area-inset-bottom)); padding-bottom: env(safe-area-inset-bottom);
  background: var(--glass); backdrop-filter: blur(14px); border-top: 1px solid var(--border);
}
.tabbar button { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; color: var(--text-secondary); transition: color 0.3s var(--ease); }
.tabbar i { font-style: normal; font-size: 18px; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 10px; transition: all 0.3s var(--ease); }
.tabbar span { font-size: 11px; }
.tabbar button.active { color: var(--accent-gold); }
.tabbar button.active i { background: rgba(251, 191, 36, 0.14); }

.legal { font-size: 10px; text-align: center; color: var(--text-secondary); padding: 4px 12px; padding-bottom: 4px; }

/* 弹窗与提示 */
.modal { position: fixed; inset: 0; background: rgba(2, 6, 23, 0.7); backdrop-filter: blur(4px); display: grid; place-items: center; padding: 24px; z-index: 10; }
.modal[hidden], .toast[hidden] { display: none; }
.modal-card { width: min(380px, 100%); background: var(--bg-light); border: 1px solid var(--border); border-radius: 18px; padding: 20px; }
.modal-card h3 { margin-bottom: 8px; font-size: 17px; }
.modal-card p { color: var(--text-secondary); font-size: 14px; }
#modalBody { white-space: pre-line; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }
.toast { position: fixed; left: 50%; bottom: 96px; transform: translateX(-50%); background: var(--bg-light); border: 1px solid var(--accent-blue); padding: 8px 18px; border-radius: 999px; font-size: 13px; z-index: 20; }

@media (min-width: 761px) {
  .app { border-left: 1px solid var(--border); border-right: 1px solid var(--border); }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

.para.hl { background: rgba(251, 191, 36, 0.18); border-radius: 6px; }
.reader h3 { margin: 4px 0 10px; }
.reader .para { cursor: text; user-select: text; }
[hidden] { display: none !important; }

/* ---------- 黑白覆盖：去掉渐变、毛玻璃、彩色，只保留黑/白/灰 ---------- */
.app { background: var(--bg-dark); }
.proto-tag, .tag.gold, .tag.blue { color: var(--text-primary); border-color: var(--border); }
.hero h1 { background: none; -webkit-background-clip: initial; background-clip: initial; color: var(--text-primary); }
.msg.user { background: var(--text-primary); color: var(--bg-dark); }
.msg.bot, .card, .chip, .tabbar, .composer, .modal-card, .toast { background: var(--bg-dark); backdrop-filter: none; -webkit-backdrop-filter: none; }
.tabbar, .composer { backdrop-filter: none; }
.send, .btn, .btn.gold { background: var(--text-primary); color: var(--bg-dark); }
.btn.ghost { background: transparent; color: var(--text-primary); border: 1px solid var(--text-primary); }
.btn.danger { background: transparent; color: var(--text-primary); border: 2px solid var(--text-primary); font-weight: 700; }
.btn[disabled] { opacity: 0.4; }
.bar { background: var(--border); }
.bar > i { background: var(--text-primary); }
.code, .invite-token, pre.code { background: var(--bg-light); color: var(--text-primary); border: 1px solid var(--border); }
.warn, .login-warn, .lock { color: var(--text-primary); font-weight: 600; border-color: var(--text-primary); }
.evi blockquote { border-left-color: var(--text-primary); }
.tab-btn { border-color: var(--border); color: var(--text-secondary); }
.tab-btn.active { color: var(--bg-dark); background: var(--text-primary); border-color: var(--text-primary); }
.tabbar button { color: var(--text-secondary); }
.tabbar button.active { color: var(--text-primary); font-weight: 700; }
.tabbar button.active i { background: var(--text-primary); color: var(--bg-dark); }
.asset.sel, .persona:hover, .persona.current, .chip:hover { border-color: var(--text-primary); }
.modal { background: rgba(0, 0, 0, 0.55); backdrop-filter: none; }
.toast { border-color: var(--text-primary); }
.para.hl { background: var(--border); }
.back { color: var(--text-primary); text-decoration: underline; }
.result-num, .asset .tier { color: var(--text-primary); }
button:focus-visible, input:focus-visible, select:focus-visible, a:focus-visible { outline: 2px solid var(--text-primary); outline-offset: 2px; }
.theme-btn { font-size: 12px; padding: 4px 10px; border: 1px solid var(--border); border-radius: 999px; color: var(--text-primary); }

/* Minimal chat layout, preserving the existing v3 application and permissions. */
.app {max-width:none; padding-left:86px; background:var(--bg-dark)}
.topbar {border:0; height:64px; padding:16px 28px; flex-shrink:0}
.brand img,.proto-tag {display:none}
.brand {font-family:inherit;font-size:18px}
.tabbar {position:fixed;left:0;top:0;bottom:0;width:86px;height:auto;display:flex;flex-direction:column;justify-content:flex-start;gap:14px;padding:22px 6px;border:0;border-right:1px solid var(--border);background:var(--bg-dark)}
.tabbar button {width:100%;min-height:54px;flex:none;border-radius:8px;color:var(--text-secondary)}
.tabbar button.active {color:var(--text-primary);background:var(--bg-light)}
.stage {width:100%;max-width:1120px;margin:0 auto}
.chat-scroll {padding:24px max(20px,calc((100% - 820px)/2))}
.hero {padding:15vh 0 0}
.hero h1 {background:none;color:var(--text-primary);font-size:30px;letter-spacing:0;font-weight:500}
.hero p {font-size:14px;margin-top:12px}
.suggest {display:none}
.composer {max-width:820px;width:calc(100% - 40px);margin:0 auto 8px;padding:10px;border:1px solid var(--border);border-radius:16px;background:var(--bg-dark);backdrop-filter:none;align-items:center}
.composer input {border:0;border-radius:0;background:transparent;padding:12px 6px}
.composer select {font-size:12px;border:0;background:var(--bg-dark);max-width:110px}
.send,.btn:not(.ghost) {background:var(--text-primary);color:var(--bg-dark)}
.msg.user {background:var(--bg-light);color:var(--text-primary);border:1px solid var(--border)}
.msg.bot {background:var(--bg-dark)}
.agent-shortcuts {display:flex;justify-content:center;flex-wrap:wrap;gap:6px;padding:0 18px 12px;flex-shrink:0}
.agent-shortcuts[hidden] {display:none}
.agent-shortcuts button {font-size:12px;padding:5px 10px;border-radius:6px;color:var(--text-secondary)}
.agent-shortcuts button:hover,.agent-shortcuts button[aria-pressed="true"] {color:var(--text-primary);background:var(--bg-light)}
#loginEntry {font-size:12px;color:var(--text-secondary)}
.legal {border:0;background:var(--bg-dark);font-size:10px;padding:4px 14px 10px;color:var(--text-secondary)}
.modal {background:rgba(0,0,0,.45)}
.modal-card,.card {background:var(--bg-dark);box-shadow:none}
.proto-tag,.tab-btn.active,.btn.danger {border-color:var(--border);color:var(--text-primary);background:var(--bg-light)}
.invite-token {background:var(--bg-light)}
@media(max-width:650px){.app{padding-left:56px}.tabbar{width:56px;padding:16px 3px;gap:10px}.tabbar span{font-size:10px}.topbar{padding:12px 14px}.hero h1{font-size:26px}.composer{width:calc(100% - 24px);flex-wrap:nowrap}.composer select{max-width:86px;flex-basis:auto}.agent-shortcuts{gap:2px;padding:0 8px 8px}.agent-shortcuts button{font-size:11px;padding:4px 6px}.legal{font-size:9px}.chat-scroll{padding:16px}}

.tabbar{gap:8px;padding-top:14px;overflow-y:auto}.tabbar button i{font-style:normal;font-size:20px}.tabbar button span{display:block;font-size:11px}.tabbar button{min-height:55px}.tabbar button:hover{background:var(--bg-light);color:var(--text-primary)}

/* Account stays at the bottom of the sidebar on every page. */
.tabbar {padding-bottom:max(14px,env(safe-area-inset-bottom));box-sizing:border-box}
#nav-user {margin-top:auto;flex-shrink:0;border-top:1px solid var(--border);border-radius:0;padding-top:10px;min-height:64px;color:var(--text-primary)}
/* 投诉举报对话框 */
#reportPane .modal-card { width: min(460px, 100%); }
#reportPane label:not(.agree) { display: block; margin: 10px 0 4px; font-size: 13px; color: var(--text-secondary); }
#reportPane select, #reportPane textarea { display: block; width: 100%; box-sizing: border-box; margin-top: 4px; font: inherit; padding: 8px; border-radius: 10px; border: 1px solid var(--border); background: transparent; color: inherit; }
#reportPane textarea { margin-top: 10px; resize: vertical; }
footer.legal a { color: inherit; text-decoration: underline; text-underline-offset: 2px; }

/* 多端使用页：步骤列表编号留在卡片内 */
#view-sidebar ol { padding-left: 1.6em; margin: 8px 0; }
#view-sidebar ol li { margin: 4px 0; }

/* 手机窄屏页头：已登录时不再显示"登录/注册"入口；标签不换行、超长省略 */
#loginEntry { white-space: nowrap; }
.who:has(#whoBtn:not([hidden])) #loginEntry { display: none; }
@media (max-width: 480px) { .who { gap: 4px; min-width: 0; } .who .who-btn { max-width: 30vw; padding: 4px 8px; min-width: 0; } .who #bellBtn, .who #themeBtn { flex-shrink: 0; max-width: none; } }
/* 多模态附件：回形针按钮与已选文件 */
.composer .attach { border: 1px solid var(--border); background: var(--bg-light); color: var(--text-primary); border-radius: 12px; padding: 6px 10px; cursor: pointer; flex: 0 0 auto; }
.attach-list { max-width: 820px; width: calc(100% - 40px); margin: 0 auto 6px; display: flex; flex-wrap: wrap; gap: 6px; }