/* Flen's Everywhere — 极简样式（克制、低信息密度） */

:root {
  --bg: #0d0d0f;
  --fg: #d8d8da;
  --muted: #707078;
  --line: #26262c;
  --accent: #8fe3a8;
  --danger: #e89a9a;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, "JetBrains Mono",
    "Noto Sans SC", "PingFang SC", "Microsoft YaHei", monospace;
  font-size: 15px;
  line-height: 1.7;
  min-height: 100vh;
}

main {
  max-width: 660px;
  margin: 0 auto;
  padding: 48px 24px 64px;
}

header { margin-bottom: 40px; }

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.brand h1 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--fg);
}

.signal-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(143, 227, 168, 0.35); }
  50% { opacity: 0.45; box-shadow: 0 0 0 5px rgba(143, 227, 168, 0); }
}

.tagline {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.18em;
}

.hidden { display: none !important; }

/* 表单 */
label {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
}

.field { margin-bottom: 22px; }

input {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  color: var(--fg);
  font: inherit;
  padding: 8px 2px;
  outline: none;
  transition: border-color 0.2s ease;
}

input:focus { border-bottom-color: var(--accent); }

button {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--line);
  font: inherit;
  font-size: 0.85rem;
  letter-spacing: 0.28em;
  padding: 10px 26px;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}

button:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
button:disabled { opacity: 0.35; cursor: not-allowed; }

#challenge-box {
  border: 1px dashed var(--line);
  padding: 16px 18px;
}

#question-text { margin: 0 0 14px; }

.error {
  color: var(--danger);
  font-size: 0.85rem;
  margin: 0 0 14px;
}

/* 仪表盘 */
.count {
  font-size: 1rem;
  margin: 0 0 28px;
  letter-spacing: 0.06em;
}

.table-wrap { overflow-x: auto; margin-bottom: 18px; }

table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }

th {
  text-align: left;
  font-weight: 400;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  padding: 6px 10px 10px 2px;
  border-bottom: 1px solid var(--line);
}

td {
  padding: 9px 10px 9px 2px;
  border-bottom: 1px solid var(--line);
  font-variant-numeric: tabular-nums;
}

td.empty { color: var(--muted); text-align: center; padding: 26px 0; }

.pager {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 34px;
}

.pager button { padding: 7px 18px; letter-spacing: 0.18em; font-size: 0.8rem; }

.page-info {
  color: var(--muted);
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
}

.actions { display: flex; justify-content: flex-end; }
.actions button { color: var(--muted); }
.actions button:hover:not(:disabled) { border-color: var(--danger); color: var(--danger); }

footer {
  margin-top: 64px;
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}