/* Application Stylesheet */
:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --success: #16a34a;
  --danger: #dc2626;
  --bg-main: #f8fafc;
  --card-bg: #ffffff;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --border-focus: #3b82f6;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px;
}

.navbar {
  background-color: #ffffff;
  border-bottom: 1px solid var(--border);
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.navbar-brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

.navbar-links a {
  margin-left: 16px;
  color: var(--text-main);
  text-decoration: none;
  font-weight: 500;
}

.navbar-links a:hover {
  color: var(--primary);
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  margin-bottom: 24px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius);
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

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

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

.btn-secondary {
  background-color: #ffffff;
  color: var(--text-main);
  border-color: var(--border);
}

.btn-secondary:hover {
  background-color: #f1f5f9;
}

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

.btn-danger:hover {
  background-color: #b91c1c;
}

.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 20px;
}

.alert-notice {
  background-color: #dcfce7;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.alert-error {
  background-color: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 0.9rem;
}

.form-control {
  width: 100%;
  padding: 9px 12px;
  font-size: 0.95rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background-color: #fff;
}

.form-control:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.form-row {
  display: flex;
  gap: 16px;
}

.form-col {
  flex: 1;
}

.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}

.photo-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  display: flex;
  flex-direction: column;
}

.photo-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background-color: #e2e8f0;
}

.photo-card-body {
  padding: 12px 14px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.photo-card-title {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.photo-card-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.photo-preview-container {
  text-align: center;
  background-color: #0f172a;
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 20px;
}

.photo-preview-container img {
  max-width: 100%;
  max-height: 500px;
  border-radius: 4px;
  object-fit: contain;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
}

.data-table th, .data-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-size: 0.9rem;
}

.data-table th {
  background-color: #f8fafc;
  font-weight: 600;
  width: 30%;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  background-color: #e0e7ff;
  color: #3730a3;
}