*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #f5f6fa;
  --surface: #ffffff;
  --border: #e2e5ee;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --success: #16a34a;
  --warning: #d97706;
  --text: #1e293b;
  --muted: #64748b;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.5;
}

header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  height: 56px;
  box-shadow: var(--shadow);
}

header h1 { font-size: 16px; font-weight: 600; }
header nav a { color: var(--muted); text-decoration: none; font-size: 13px; }
header nav a:hover { color: var(--primary); }

main { max-width: 960px; margin: 0 auto; padding: 32px 24px; }

h2 { font-size: 20px; font-weight: 600; margin-bottom: 20px; }
h3 { font-size: 15px; font-weight: 600; margin-bottom: 12px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.card-title { font-weight: 600; font-size: 15px; }
.card-subtitle { color: var(--muted); font-size: 12px; margin-top: 2px; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 9999px;
  font-size: 11px;
  font-weight: 500;
}
.badge-success { background: #dcfce7; color: #15803d; }
.badge-error   { background: #fee2e2; color: #b91c1c; }
.badge-warning { background: #fef9c3; color: #854d0e; }
.badge-neutral { background: #f1f5f9; color: var(--muted); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: none;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, opacity .15s;
  text-decoration: none;
}
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }
.btn-danger  { background: var(--danger); color: #fff; }
.btn-danger:hover:not(:disabled)  { background: var(--danger-hover); }
.btn-ghost   { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.btn-ghost:hover:not(:disabled)   { background: var(--bg); color: var(--text); }
.btn-sm { padding: 4px 10px; font-size: 12px; }

.btn-group { display: flex; gap: 8px; flex-wrap: wrap; }

input, select {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 13px;
  width: 100%;
  outline: none;
  background: var(--surface);
  color: var(--text);
}
input:focus, select:focus { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(37,99,235,.1); }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 12px; font-weight: 500; margin-bottom: 6px; color: var(--muted); }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin-bottom: 24px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.stat-value { font-size: 28px; font-weight: 700; color: var(--primary); }
.stat-label { font-size: 11px; color: var(--muted); margin-top: 2px; }

table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-size: 11px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; padding: 8px 12px; border-bottom: 1px solid var(--border); }
td { padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 13px; vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg); }

.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); }

.filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; align-items: flex-end; }
.filters .form-group { margin-bottom: 0; min-width: 140px; }

.pagination { display: flex; gap: 8px; align-items: center; justify-content: center; margin-top: 16px; }
.pagination span { font-size: 12px; color: var(--muted); }

.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.4);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
}
.modal-overlay.hidden { display: none; }
.modal {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 28px;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 20px 50px rgba(0,0,0,.2);
}
.modal h3 { margin-bottom: 20px; }

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 340px;
  box-shadow: var(--shadow);
  text-align: center;
}
.login-box h2 { margin-bottom: 8px; }
.login-box p  { color: var(--muted); font-size: 13px; margin-bottom: 24px; }

.error-msg { color: var(--danger); font-size: 12px; margin-top: 8px; }
.empty { text-align: center; padding: 40px; color: var(--muted); }

#toast {
  position: fixed;
  bottom: 24px; right: 24px;
  padding: 12px 18px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  color: #fff;
  box-shadow: 0 4px 12px rgba(0,0,0,.2);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .2s, transform .2s;
  pointer-events: none;
  z-index: 200;
}
#toast.show { opacity: 1; transform: translateY(0); }
#toast.success { background: var(--success); }
#toast.error   { background: var(--danger); }

.back-link { display: inline-flex; align-items: center; gap: 4px; color: var(--muted); text-decoration: none; font-size: 13px; margin-bottom: 20px; }
.back-link:hover { color: var(--primary); }

.sync-info { font-size: 12px; color: var(--muted); }