:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --danger: #dc2626;
  --danger-dark: #b91c1c;
  --bg: #f4f5fb;
  --card-bg: #ffffff;
  --border: #e2e4ee;
  --text: #1f2333;
  --muted: #6b7280;
  --radius: 10px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

.topbar {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.logo { font-weight: 700; font-size: 1.2rem; color: var(--text); }
.logo:hover { text-decoration: none; }

.topnav { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; font-size: 0.92rem; }
.hello { color: var(--muted); }

h1 { font-size: 1.6rem; margin: 0 0 18px; }
h2 { font-size: 1.15rem; margin: 0 0 14px; }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 22px;
}

.muted { color: var(--muted); }
.small-break { word-break: break-all; }

.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 0.92rem;
}
.alert-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }

.form-inline {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: flex-end;
}
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.grow { flex: 1 1 260px; }
.form-group-btn { justify-content: flex-end; }
.form-check { flex-direction: row; align-items: center; }

label { font-size: 0.85rem; font-weight: 600; color: var(--muted); }

input[type="text"],
input[type="password"],
input[type="url"],
input[type="datetime-local"] {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  min-width: 0;
}
input:focus { outline: 2px solid var(--primary); outline-offset: 1px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: 8px;
  border: none;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  background: #e5e7eb;
  color: var(--text);
}
.btn:hover { opacity: 0.9; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-dark); }
.btn-block { width: 100%; }
.btn-sm { padding: 6px 10px; font-size: 0.8rem; }

.icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  padding: 4px 6px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}
.icon-btn:hover { background: #eef0fb; text-decoration: none; }
.icon-btn-danger:hover { background: #fee2e2; }

.actions-cell {
  display: flex;
  gap: 2px;
  flex-wrap: nowrap;
  align-items: center;
  white-space: nowrap;
}
.actions-cell form { display: inline-flex; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; }
th { color: var(--muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; }
.truncate { max-width: 280px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nowrap { white-space: nowrap; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  margin-left: 6px;
}
.badge-active { background: #dcfce7; color: #166534; }
.badge-expired { background: #fee2e2; color: #991b1b; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}
.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  text-align: center;
}
.stat-number { display: block; font-size: 1.8rem; font-weight: 700; color: var(--primary); }
.stat-label { display: block; font-size: 0.8rem; color: var(--muted); margin-top: 4px; }

.tabs { display: flex; gap: 6px; margin-bottom: 16px; flex-wrap: wrap; }
.tab-btn {
  padding: 9px 16px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--muted);
}
.tab-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.tab-content { display: none; }
.tab-content.active { display: block; }

.chart { display: flex; flex-direction: column; gap: 10px; margin-bottom: 8px; }
.chart-row { display: grid; grid-template-columns: 160px 1fr 40px; align-items: center; gap: 10px; }
.chart-label { font-size: 0.85rem; }
.chart-bar-wrap { background: #eef0fb; border-radius: 6px; overflow: hidden; height: 14px; }
.chart-bar { background: var(--primary); height: 100%; border-radius: 6px; }
.chart-value { text-align: right; font-weight: 700; font-size: 0.85rem; }

.login-wrap { display: flex; justify-content: center; padding-top: 40px; }
.login-card { width: 100%; max-width: 380px; }

.modal {
  position: fixed; inset: 0;
  background: rgba(15, 17, 26, 0.55);
  display: flex; align-items: center; justify-content: center;
  z-index: 50;
}
.modal.hidden { display: none; }
.modal-content {
  background: #fff;
  border-radius: var(--radius);
  padding: 26px;
  text-align: center;
  position: relative;
  width: 300px;
}
.modal-close {
  position: absolute; top: 8px; right: 12px;
  background: none; border: none; font-size: 1.4rem; cursor: pointer; color: var(--muted);
}
.modal-content img { border-radius: 8px; margin: 10px 0; }

.footer { text-align: center; padding: 20px; color: var(--muted); font-size: 0.8rem; }

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.section-header h2 { margin: 0; }

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 16px;
  font-size: 0.85rem;
}
.pagination-info { color: var(--muted); }

@media (max-width: 640px) {
  .form-inline { flex-direction: column; align-items: stretch; }
  .chart-row { grid-template-columns: 1fr; gap: 4px; }
}