* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f4f6f8;
  color: #1f2933;
}

header {
  background: #0f172a;
  color: #fff;
  padding: 1rem 0;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.main-nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.main-nav a {
  color: #fff;
  text-decoration: none;
}

.container {
  width: min(960px, calc(100% - 2rem));
  margin: 0 auto;
}

.hero,
.card {
  background: #fff;
  padding: 2rem;
  border-radius: 12px;
  margin-top: 2rem;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

.flash-stack {
  margin-top: 1.5rem;
  display: grid;
  gap: 0.75rem;
}

.flash-message {
  padding: 0.9rem 1rem;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 600;
}

.flash-success {
  background: #ecfdf5;
  border-color: #86efac;
  color: #166534;
}

.flash-error {
  background: #fef2f2;
  border-color: #fca5a5;
  color: #991b1b;
}

.flash-warning {
  background: #fffbeb;
  border-color: #fcd34d;
  color: #92400e;
}

.login-form {
  display: grid;
  gap: 0.75rem;
  margin-top: 1rem;
}

.login-form input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
}

.login-form textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  resize: vertical;
  font: inherit;
}

.login-form button {
  width: fit-content;
  padding: 0.75rem 1.25rem;
  border: 0;
  border-radius: 8px;
  background: #0f172a;
  color: #fff;
  cursor: pointer;
}

.error-message {
  color: #b91c1c;
  margin: 0.75rem 0;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.page-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.button-link {
  display: inline-block;
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  background: #0f172a;
  color: #fff;
  text-decoration: none;
}

.button-link.secondary {
  background: #475569;
}

.table-wrap {
  overflow-x: auto;
  margin-top: 1.5rem;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}

.data-table th,
.data-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid #e2e8f0;
  text-align: left;
}

.data-table th {
  background: #e2e8f0;
}

.action-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.checkbox-field {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.checkbox-group {
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  padding: 1rem;
}

.checkbox-group legend {
  padding: 0 0.5rem;
}

.inline-form {
  display: inline;
}

.link-button {
  background: transparent;
  border: 0;
  padding: 0;
  color: #2563eb;
  cursor: pointer;
  font: inherit;
  text-decoration: underline;
}

.status-processing {
  color: #a16207;
  font-weight: 600;
}

.status-ready {
  color: #15803d;
  font-weight: 600;
}

.upload-progress {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  background: #f8fafc;
}

.progress-track {
  width: 100%;
  height: 12px;
  border-radius: 999px;
  background: #e2e8f0;
  overflow: hidden;
}

.progress-bar {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, #2563eb, #0ea5e9);
  transition: width 0.2s ease;
}

.success-message {
  color: #15803d;
  margin-top: 1rem;
}