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

:root {
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-danger: #dc2626;
  --color-danger-hover: #b91c1c;
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-border: #e2e8f0;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
}

.card-center {
  max-width: 400px;
  margin: 4rem auto;
}

h1, h2, h3 {
  font-weight: 600;
  line-height: 1.3;
}

h1 { font-size: 1.5rem; }
h2 { font-size: 1.25rem; }

.form-group {
  margin-bottom: 1rem;
}

label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
  color: var(--color-text-secondary);
}

input[type="text"],
input[type="password"],
input[type="datetime-local"],
input[type="file"],
select {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-surface);
}

input:focus, select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover { background: var(--color-primary-hover); }

.btn-danger {
  background: var(--color-danger);
  color: #fff;
}

.btn-danger:hover { background: var(--color-danger-hover); }

.btn-sm {
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-full { width: 100%; }

.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  margin-bottom: 1rem;
  display: none;
}

.alert-error {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.alert-success {
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.header h1 {
  font-size: 1.25rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

th, td {
  text-align: left;
  padding: 0.75rem 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

th {
  font-weight: 600;
  color: var(--color-text-secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.text-secondary { color: var(--color-text-secondary); }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-2 { margin-bottom: 1rem; }
.gap-1 { gap: 0.5rem; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.hidden { display: none; }

.badge {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 500;
}

.badge-green { background: #dcfce7; color: #166534; }
.badge-red { background: #fee2e2; color: #991b1b; }
.badge-gray { background: #f1f5f9; color: #475569; }

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 2rem;
  width: 90%;
  max-width: 480px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.modal h2 {
  margin-bottom: 1rem;
}

.copy-btn {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.5rem 0.75rem;
  font-size: 0.75rem;
  cursor: pointer;
}

.copy-btn:hover {
  background: var(--color-border);
}

.url-box {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin: 1rem 0;
}

.url-box input {
  flex: 1;
  font-family: monospace;
  font-size: 0.8rem;
}

.report-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}

.report-page .card {
  width: 100%;
  max-width: 400px;
  text-align: center;
}

.logo {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-primary);
}