:root {
  --primary: #1a56db;
  --primary-dark: #1e429f;
  --danger: #e02424;
  --bg: #f9fafb;
  --card-bg: #ffffff;
  --border: #e5e7eb;
  --text: #111827;
  --text-muted: #6b7280;
  --font: system-ui, -apple-system, sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

header h1 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--primary-dark);
}

.header-right { display: flex; align-items: center; gap: 0.75rem; }

main { max-width: 1100px; margin: 2rem auto; padding: 0 1.5rem; }

.search-bar {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.search-bar input {
  flex: 1;
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.95rem;
  outline: none;
}

.search-bar input:focus { border-color: var(--primary); }

.btn {
  padding: 0.6rem 1.1rem;
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.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: #c81e1e; }
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.btn-outline:hover { background: #eff6ff; }
.btn-ghost { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--border); }

.btn[disabled] { opacity: 0.5; cursor: not-allowed; }

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,.08);
}

thead tr { background: #f3f4f6; }
th, td { padding: 0.75rem 1rem; text-align: left; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
th { font-weight: 600; color: var(--text-muted); text-transform: uppercase; font-size: 0.75rem; letter-spacing: .05em; }
tbody tr:hover { background: #f9fafb; cursor: pointer; }
tbody tr:last-child td { border-bottom: none; }

.badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 500;
  background: #dbeafe;
  color: #1e40af;
}

.card {
  background: var(--card-bg);
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0,0,0,.08);
  padding: 1.5rem 2rem;
}

.card h2 { margin-bottom: 1.25rem; font-size: 1.1rem; }

.field-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1rem; }

.field label { display: block; font-size: 0.75rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: .05em; margin-bottom: 0.25rem; }
.field span { font-size: 0.95rem; }

.detail-actions { margin-top: 1.5rem; display: flex; gap: 0.75rem; }

.modal-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,.4);
  z-index: 50;
  align-items: center;
  justify-content: center;
}
.modal-overlay.open { display: flex; }

.modal {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 1.75rem;
  width: 100%;
  max-width: 460px;
  box-shadow: 0 10px 30px rgba(0,0,0,.15);
}

.modal h3 { margin-bottom: 1.25rem; font-size: 1rem; }

.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 500; margin-bottom: 0.35rem; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
  font-family: var(--font);
  outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); }

.modal-actions { display: flex; justify-content: flex-end; gap: 0.75rem; margin-top: 1.25rem; }

.toast {
  position: fixed;
  bottom: 1.5rem; right: 1.5rem;
  background: #111827;
  color: #fff;
  padding: 0.7rem 1.1rem;
  border-radius: 6px;
  font-size: 0.88rem;
  z-index: 100;
  opacity: 0;
  transition: opacity .3s;
}
.toast.show { opacity: 1; }
.toast.error { background: var(--danger); }

.empty { padding: 3rem; text-align: center; color: var(--text-muted); }
.loading { padding: 2rem; text-align: center; color: var(--text-muted); }

.back-link { display: inline-flex; align-items: center; gap: 0.35rem; color: var(--primary); text-decoration: none; font-size: 0.9rem; margin-bottom: 1.25rem; }
.back-link:hover { text-decoration: underline; }

.uuid-mono { font-family: monospace; font-size: 0.85rem; }