/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  line-height: 1.5;
  color: #333;
  background-color: #f8fafc;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.card {
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  padding: 24px;
  margin-bottom: 20px;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid #e2e8f0;
}

.header h1 {
  font-size: 24px;
  font-weight: 600;
  color: #1a202c;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
}

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

.btn-primary {
  background-color: #3b82f6;
  color: white;
  border-color: #3b82f6;
}

.btn-primary:hover:not(:disabled) {
  background-color: #2563eb;
  border-color: #2563eb;
}

.btn-secondary {
  background-color: white;
  color: #374151;
  border-color: #d1d5db;
}

.btn-secondary:hover:not(:disabled) {
  background-color: #f9fafb;
}

.btn-danger {
  background-color: #ef4444;
  color: white;
  border-color: #ef4444;
}

.btn-danger:hover:not(:disabled) {
  background-color: #dc2626;
  border-color: #dc2626;
}

/* Forms */
.form {
  max-width: 500px;
}

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: #374151;
  margin-bottom: 4px;
}

.form-input,
.form-select {
  width: 100%;
  padding: 8px 12px;
  font-size: 14px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  background-color: white;
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Lists */
.campaign-list {
  display: grid;
  gap: 16px;
}

.campaign-card {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 20px;
  cursor: pointer;
  transition: all 0.2s;
}

.campaign-card:hover {
  border-color: #3b82f6;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.campaign-title {
  font-size: 18px;
  font-weight: 600;
  color: #1a202c;
  margin-bottom: 8px;
}

.campaign-info {
  display: flex;
  gap: 16px;
  color: #6b7280;
  font-size: 14px;
}

/* Status badges */
.status-badge {
  display: inline-block;
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 4px;
  text-transform: uppercase;
}

.status-pending {
  background-color: #fef3c7;
  color: #92400e;
}

.status-accepted {
  background-color: #d1fae5;
  color: #065f46;
}

.status-rejected {
  background-color: #fee2e2;
  color: #991b1b;
}

/* Admin styles */
.admin-header {
  background-color: #e2e8f0;
  color: #1a202c;
  padding: 16px 24px;
  margin: -24px -24px 24px -24px;
  border-radius: 8px 8px 0 0;
  border-bottom: 2px solid #d1d5db;
}

.signup-table {
  width: 100%;
  border-collapse: collapse;
}

.signup-table th,
.signup-table td {
  text-align: left;
  padding: 12px;
  border-bottom: 1px solid #e2e8f0;
}

.signup-table th {
  background-color: #f8fafc;
  font-weight: 600;
  color: #374151;
}

.signup-table tr:hover {
  background-color: #f8fafc;
}

.ranking-input {
  width: 80px;
  padding: 4px 8px;
  font-size: 12px;
  border: 1px solid #d1d5db;
  border-radius: 4px;
}

/* Utilities */
.text-center {
  text-align: center;
}

.mb-4 {
  margin-bottom: 16px;
}

.mb-6 {
  margin-bottom: 24px;
}

.flex {
  display: flex;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-4 {
  gap: 16px;
}

.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 40px;
  color: #6b7280;
}

.error {
  color: #ef4444;
  background-color: #fee2e2;
  padding: 12px;
  border-radius: 6px;
  margin-bottom: 16px;
}

.success {
  color: #059669;
  background-color: #d1fae5;
  padding: 12px;
  border-radius: 6px;
  margin-bottom: 16px;
}

/* Login page */
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
  background: white;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  padding: 40px;
  text-align: center;
  max-width: 400px;
  width: 100%;
}

.login-title {
  font-size: 28px;
  font-weight: 700;
  color: #1a202c;
  margin-bottom: 8px;
}

.login-subtitle {
  color: #6b7280;
  margin-bottom: 32px;
}

.google-login-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: white;
  color: #374151;
  padding: 12px 24px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s;
  cursor: pointer;
}

.google-login-btn:hover {
  background: #f9fafb;
  border-color: #9ca3af;
}