/* ScienceBuddy — 界面层样式。深色主题，无外部依赖。 */

:root {
  --bg: #0d1117;
  --bg-soft: #141a23;
  --panel: #161d27;
  --panel-2: #1c2531;
  --line: #263040;
  --line-soft: #1f2836;
  --text: #e6edf5;
  --text-dim: #9aa8ba;
  --text-faint: #6b7a8d;
  --accent: #4a9eff;
  --accent-soft: rgba(74, 158, 255, 0.14);
  --green: #3fb950;
  --amber: #d29922;
  --red: #f85149;
  --radius: 10px;
  --radius-sm: 7px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.app { display: flex; flex-direction: column; min-height: 100vh; }

/* ---------- 顶栏 ---------- */

.topbar {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 20px;
  height: 58px;
  background: rgba(13, 17, 23, 0.92);
  border-bottom: 1px solid var(--line-soft);
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
  z-index: 20;
}

.brand { display: flex; align-items: center; gap: 10px; color: var(--text); flex: none; }
.brand:hover { text-decoration: none; }

.brand-mark {
  width: 26px; height: 26px; flex: none;
  border-radius: 7px;
  background: linear-gradient(135deg, #4a9eff, #8f6bff);
  box-shadow: 0 0 0 1px rgba(255,255,255,0.06) inset;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 14px; letter-spacing: .3px; }
.brand-text em { font-style: normal; font-size: 11px; color: var(--text-faint); }

.nav { display: flex; gap: 4px; flex: 1; min-width: 0; overflow-x: auto; }

.nav-link {
  padding: 5px 11px;
  border-radius: 999px;
  color: var(--text-dim);
  white-space: nowrap;
  font-size: 13px;
  border: 1px solid transparent;
}
.nav-link:hover { color: var(--text); background: var(--panel-2); text-decoration: none; }
.nav-link.active { color: var(--text); background: var(--accent-soft); border-color: rgba(74,158,255,.35); }
.nav-link .tag {
  margin-left: 6px; font-size: 10px; color: var(--text-faint);
  border: 1px solid var(--line); border-radius: 4px; padding: 0 4px;
}

.user-zone { display: flex; align-items: center; gap: 10px; flex: none; }
.user-chip {
  display: flex; align-items: center; gap: 8px;
  padding: 4px 10px; border-radius: 999px;
  background: var(--panel-2); border: 1px solid var(--line);
  font-size: 12px; color: var(--text-dim); max-width: 240px;
}
.user-chip .who { color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.avatar {
  width: 20px; height: 20px; flex: none; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center; font-size: 11px; font-weight: 600;
}

/* ---------- 主体 ---------- */

.main { flex: 1; width: 100%; max-width: 1040px; margin: 0 auto; padding: 26px 20px 40px; }

.loading { color: var(--text-faint); padding: 40px 0; text-align: center; }

.page-head { margin-bottom: 20px; }
.page-head h1 { margin: 0 0 4px; font-size: 21px; font-weight: 600; letter-spacing: .2px; }
.page-head p { margin: 0; color: var(--text-dim); font-size: 13px; }

/* 首页建设中提示：页面唯一的内容块 */
.notice { padding: 64px 0 48px; text-align: center; }
.notice h1 { margin: 0 0 14px; font-size: 26px; font-weight: 600; letter-spacing: .4px; }
.notice p { margin: 0; color: var(--text-dim); font-size: 14px; }

.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

.card {
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 16px 18px;
  /* 关键：作为 flex/grid 子项时禁止被压缩，避免 overflow 组合导致内容静默消失 */
  flex: none;
  min-width: 0;
}
.card.wide { grid-column: 1 / -1; }
.card h2 { margin: 0 0 12px; font-size: 14px; font-weight: 600; color: var(--text); }
.card h2 .sub { font-weight: 400; color: var(--text-faint); font-size: 12px; margin-left: 8px; }

/* ---------- 表单 ---------- */

.field { margin-bottom: 12px; }
.field label { display: block; font-size: 12px; color: var(--text-dim); margin-bottom: 5px; }
.field .hint { font-size: 11px; color: var(--text-faint); margin-top: 4px; }

input[type="text"], input[type="email"], input[type="password"], textarea, select {
  width: 100%;
  padding: 9px 11px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
input::placeholder, textarea::placeholder { color: var(--text-faint); }
textarea { resize: vertical; min-height: 76px; }

.row { display: flex; gap: 8px; align-items: flex-end; }
.row > .field { flex: 1; margin-bottom: 0; }
.row > .shrink { flex: none; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--panel-2);
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  transition: background .15s, border-color .15s, opacity .15s;
  white-space: nowrap;
}
.btn:hover:not(:disabled) { background: #222d3b; border-color: #31405a; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #061120; font-weight: 600; }
.btn.primary:hover:not(:disabled) { background: #63adff; border-color: #63adff; }
.btn.danger { color: var(--red); border-color: rgba(248,81,73,.35); }
.btn.danger:hover:not(:disabled) { background: rgba(248,81,73,.12); }
.btn.small { padding: 5px 10px; font-size: 12px; }
.btn.link { background: none; border: none; color: var(--accent); padding: 0; }

.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }

/* ---------- 分段控件 / 标签页 ---------- */

.segmented {
  display: inline-flex; gap: 2px; padding: 3px;
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: 999px;
  margin-bottom: 16px;
}
.segmented button {
  border: none; background: none; color: var(--text-dim);
  padding: 5px 14px; border-radius: 999px; cursor: pointer;
  font-size: 13px; font-family: inherit;
}
.segmented button.active { background: var(--accent-soft); color: var(--text); }

/* ---------- 提示 ---------- */

.msg { border-radius: var(--radius-sm); padding: 9px 12px; font-size: 12.5px; margin-bottom: 12px; border: 1px solid; }
.msg.error { background: rgba(248,81,73,.1); border-color: rgba(248,81,73,.3); color: #ffb3ae; }
.msg.success { background: rgba(63,185,80,.1); border-color: rgba(63,185,80,.3); color: #8fe39a; }
.msg.info { background: var(--accent-soft); border-color: rgba(74,158,255,.3); color: #a9d1ff; }
.msg.warn { background: rgba(210,153,34,.1); border-color: rgba(210,153,34,.32); color: #e8c469; }
.msg:empty { display: none; }

.badge { display: inline-flex; align-items: center; gap: 5px; font-size: 11px; padding: 1px 7px; border-radius: 999px; border: 1px solid var(--line); color: var(--text-dim); }
.badge.on { color: var(--green); border-color: rgba(63,185,80,.35); background: rgba(63,185,80,.1); }
.badge.off { color: var(--red); border-color: rgba(248,81,73,.35); background: rgba(248,81,73,.1); }
.badge.wait { color: var(--amber); border-color: rgba(210,153,34,.35); background: rgba(210,153,34,.1); }

/* ---------- 列表 ---------- */

.list { display: flex; flex-direction: column; gap: 1px; }
.list-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 2px; border-bottom: 1px solid var(--line-soft);
  flex: none;
}
.list-item:last-child { border-bottom: none; }
.list-item .grow { flex: 1; min-width: 0; }
.list-item .name { font-size: 13px; }
.list-item .meta { font-size: 11.5px; color: var(--text-faint); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.kv { display: grid; grid-template-columns: minmax(120px, auto) 1fr; gap: 6px 14px; font-size: 12.5px; }
.kv dt { color: var(--text-dim); }
.kv dd { margin: 0; font-family: var(--mono); font-size: 12px; overflow-wrap: anywhere; }
.kv dd.plain { font-family: inherit; font-size: 12.5px; }

.code {
  font-family: var(--mono); font-size: 11.5px;
  background: var(--bg-soft); border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm); padding: 10px 12px;
  overflow-x: auto; white-space: pre; color: var(--text-dim); margin: 0;
}

.empty { color: var(--text-faint); font-size: 12.5px; padding: 14px 0; }

.divider {
  display: flex; align-items: center; gap: 10px;
  margin: 16px 0;
  color: var(--text-faint); font-size: 12px;
}
.divider::before, .divider::after {
  content: ''; flex: 1; height: 1px; background: var(--line-soft);
}

/* ---------- 页脚 / 吐司 ---------- */

.footer {
  display: flex; gap: 8px; align-items: center; flex-wrap: wrap;
  max-width: 1040px; width: 100%; margin: 0 auto;
  padding: 14px 20px 26px;
  color: var(--text-faint); font-size: 11.5px;
  border-top: 1px solid var(--line-soft);
}
.footer .dot { color: var(--line); }

.toasts { position: fixed; right: 18px; bottom: 18px; display: flex; flex-direction: column; gap: 8px; z-index: 50; }
.toast {
  background: var(--panel-2); border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm); padding: 10px 14px;
  font-size: 12.5px; max-width: 320px;
  box-shadow: 0 8px 24px rgba(0,0,0,.4);
}
.toast.error { border-left-color: var(--red); }
.toast.success { border-left-color: var(--green); }

@media (max-width: 640px) {
  .topbar { flex-wrap: wrap; height: auto; padding: 10px 14px; gap: 10px; }
  .nav { order: 3; width: 100%; }
  .user-zone { margin-left: auto; }
  .main { padding: 18px 14px 32px; }
  .brand-text em { display: none; }
}