:root {
  --font: "Segoe UI", "Inter", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --serif: "Georgia", "Iowan Old Style", "Times New Roman", serif;
  --ink: #1b2a2f;
  --ink-soft: #4a6068;
  --cream: #fdf8f0;
  --cream-2: #f4ece0;
  --teal: #0f766e;
  --teal-dark: #0a5a54;
  --teal-soft: #d7f2ed;
  --coral: #ef6f5c;
  --coral-soft: #ffe4de;
  --amber: #f2a93b;
  --violet: #7a5cff;
  --line: #e4d9c8;
  --danger: #c0392b;
  --ok: #15803d;
  --radius: 16px;
  --shadow: 0 20px 50px -30px rgba(27, 42, 47, 0.7);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--cream);
  color: var(--ink);
  line-height: 1.5;
}

.admin-top {
  background: var(--ink);
  color: #f3ece0;
  padding: 0.8rem clamp(1rem, 3vw, 2rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.admin-top .brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  color: #fff;
  text-decoration: none;
}
.admin-top .brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--teal), var(--violet) 55%, var(--coral));
}
.admin-top nav { display: flex; gap: 0.4rem; align-items: center; flex-wrap: wrap; }
.admin-top nav a, .admin-top nav button {
  color: #d8d0c2;
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 600;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  font-family: inherit;
}
.admin-top nav a:hover, .admin-top nav button:hover { background: rgba(255,255,255,0.1); color: #fff; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 1.5rem clamp(1rem, 3vw, 2rem) 4rem; }

h1 { font-family: var(--serif); font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 0 0 0.3rem; }
.sub { color: var(--ink-soft); font-size: 0.92rem; margin: 0 0 1.4rem; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 0.8rem; margin-bottom: 1.6rem; }
.stat {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
}
.stat strong { display: block; font-family: var(--serif); font-size: 1.8rem; line-height: 1.1; }
.stat span { font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.07em; font-weight: 700; color: var(--ink-soft); }
.stat.hl { background: linear-gradient(150deg, var(--teal), #0a4f4a); border-color: transparent; color: #fff; }
.stat.hl span { color: #bfe4dd; }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
.card-head h2 { font-family: var(--serif); font-size: 1.15rem; margin: 0; }

table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th {
  text-align: left;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 0.6rem 0.8rem;
  background: var(--cream-2);
  white-space: nowrap;
}
td { padding: 0.65rem 0.8rem; border-top: 1px solid #f0e8db; vertical-align: middle; }
tr:hover td { background: #fdfaf4; }
.table-scroll { overflow-x: auto; }

.user-cell { display: flex; align-items: center; gap: 0.6rem; min-width: 180px; }
.avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--teal-soft); color: var(--teal-dark);
  display: grid; place-items: center; font-weight: 800; font-size: 0.8rem; flex: none;
}
.user-cell .name { font-weight: 700; }
.user-cell .handle { font-size: 0.75rem; color: var(--ink-soft); }

.badge {
  display: inline-flex; align-items: center; gap: 0.25rem;
  padding: 0.16rem 0.55rem; border-radius: 999px;
  font-size: 0.68rem; font-weight: 800; letter-spacing: 0.04em; text-transform: uppercase;
  background: var(--cream-2); color: var(--ink-soft);
}
.badge-active { background: #e6f4e9; color: var(--ok); }
.badge-blocked { background: var(--coral-soft); color: var(--danger); }
.badge-admin { background: var(--violet); color: #fff; }
.badge-user { background: var(--teal-soft); color: var(--teal-dark); }
.badge-online { background: #e6f4e9; color: var(--ok); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.35rem;
  padding: 0.45rem 0.85rem; border-radius: 999px; border: 1px solid transparent;
  background: var(--teal); color: #fff; font-weight: 700; font-size: 0.8rem;
  cursor: pointer; font-family: inherit; transition: filter 0.15s;
  text-decoration: none;
}
.btn:hover { filter: brightness(1.08); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--teal); color: var(--teal-dark); filter: none; }
.btn-danger { background: var(--coral); }
.btn-sm { padding: 0.3rem 0.65rem; font-size: 0.74rem; }
.row { display: flex; gap: 0.3rem; flex-wrap: wrap; }

.input, .select {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  font-family: inherit;
  font-size: 0.86rem;
  outline: none;
  min-width: 200px;
}
.input:focus, .select:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(15,118,110,0.12); }

.auth-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background:
    radial-gradient(circle at 15% 20%, rgba(242,169,59,0.35), transparent 45%),
    radial-gradient(circle at 85% 80%, rgba(122,92,255,0.3), transparent 45%);
}
.auth-card {
  width: min(420px, 100%);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
  padding: 1.8rem;
}
.auth-card h2 { font-family: var(--serif); font-size: 1.5rem; margin: 0 0 0.3rem; }
.auth-card p { color: var(--ink-soft); font-size: 0.88rem; margin: 0 0 1.2rem; }
.auth-card label {
  display: block; font-size: 0.74rem; font-weight: 800; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--ink-soft); margin-bottom: 0.3rem;
}
.auth-card .input { width: 100%; border-radius: 11px; margin-bottom: 0.85rem; }
.auth-card .btn { width: 100%; padding: 0.7rem; border-radius: 11px; font-size: 0.92rem; }

.alert { padding: 0.65rem 0.9rem; border-radius: 11px; font-size: 0.84rem; margin-bottom: 0.9rem; display: none; }
.alert.show { display: block; }
.alert-error { background: var(--coral-soft); color: #9c2f20; }
.alert-ok { background: #e6f4e9; color: var(--ok); }

.hidden { display: none !important; }
.muted { color: var(--ink-soft); }
.small { font-size: 0.8rem; }
.empty { padding: 2.5rem 1rem; text-align: center; color: var(--ink-soft); font-size: 0.9rem; }

.toast-wrap { position: fixed; bottom: 1.2rem; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; gap: 0.4rem; align-items: center; z-index: 100; }
.toast { background: var(--ink); color: #fff; padding: 0.55rem 1rem; border-radius: 999px; font-size: 0.84rem; font-weight: 600; }
.toast.err { background: var(--danger); }
.toast.ok { background: var(--ok); }

.book-thumb { width: 40px; height: 52px; border-radius: 6px; object-fit: cover; border: 1px solid var(--line); background: var(--cream-2); display: grid; place-items: center; font-size: 0.6rem; overflow: hidden; }