:root {
  --bg: #0f1419;
  --card: #1a222d;
  --ink: #e7eef7;
  --muted: #8b9bb0;
  --accent: #3d8bfd;
  --danger: #e25c5c;
  --line: rgba(255, 255, 255, 0.08);
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
}

.login-body {
  display: grid;
  place-items: center;
  padding: 2rem;
}

.login-card {
  width: min(400px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.75rem;
  display: grid;
  gap: 0.85rem;
}

.login-card h1 { margin: 0; font-size: 1.35rem; }
.login-card .sub { margin: 0; color: var(--muted); font-size: 0.9rem; }
.login-card label { display: grid; gap: 0.35rem; font-size: 0.88rem; color: var(--muted); }
.login-card input {
  padding: 0.7rem 0.8rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #121820;
  color: var(--ink);
}
.login-card button {
  margin-top: 0.4rem;
  padding: 0.75rem;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}
.err { color: var(--danger); margin: 0; font-size: 0.88rem; }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--line);
  background: #121820;
}
.topbar h1 { margin: 0; font-size: 1.1rem; }
.topbar button {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 8px;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
}

.wrap {
  width: min(1100px, calc(100% - 2rem));
  margin: 1.25rem auto 2.5rem;
  display: grid;
  gap: 1.25rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem 1.1rem 1.2rem;
}
.card h2 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-weight: 600;
}
.card canvas { width: 100% !important; max-height: 280px; }

.toolbar {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: end;
}
.toolbar label { display: grid; gap: 0.25rem; font-size: 0.8rem; color: var(--muted); }
.toolbar input {
  padding: 0.45rem 0.55rem;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: #121820;
  color: var(--ink);
}
.toolbar button {
  padding: 0.5rem 0.9rem;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
th, td {
  text-align: left;
  padding: 0.55rem 0.4rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th { color: var(--muted); font-weight: 500; }
.pager {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 0.85rem;
}
.pager button {
  background: #121820;
  border: 1px solid var(--line);
  color: var(--ink);
  border-radius: 6px;
  padding: 0.3rem 0.65rem;
  cursor: pointer;
}
.muted { color: var(--muted); }

.fb-thumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.fb-thumb {
  width: 52px;
  height: 52px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  background: #121820;
  cursor: pointer;
}
.fb-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.fb-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.82);
  display: grid;
  place-items: center;
  padding: 1.5rem;
}
.fb-lightbox[hidden] { display: none; }
.fb-lightbox img {
  max-width: min(92vw, 960px);
  max-height: 88vh;
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
}
.fb-lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  width: 2.25rem;
  height: 2.25rem;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
}