:root {
  --primary-color: rgb(237, 7, 7);
  --primary-dark: rgb(180, 5, 5);
  --secondary-color: #000000;
  --background: #ffffff;
  --surface: #f8f8f8;
  --text-primary: #000000;
  --text-secondary: #444444;
  --border: #cccccc;
  --shadow: 0 8px 16px -2px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 20px 30px -6px rgba(0, 0, 0, 0.2);
}

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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: var(--background);
  color: var(--text-primary);
  line-height: 1.4;
  font-size: 14px;
  min-height: 50vh;
}

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

.page {
  display: none;
  min-height: 100vh;
  position: relative;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  background-image: url("image.avif");
}

.header {
  background: var(--surface);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 2px solid var(--primary-color);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 0;
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.nav-buttons button {
  background: white;
  border: 2px solid var(--secondary-color);
  padding: 8px 16px;
  margin-left: 8px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.nav-buttons button:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

.page {
  display: none;
  min-height: calc(100vh - 80px);
  padding: 20px 0;
}

.page.active {
  display: block;
}

.auth-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 70vh;
}

.auth-card {
  background: var(--surface);
  padding: 30px;
  border-radius: 15px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 450px;
  border: 2px solid var(--secondary-color);
}

.auth-card h2 {
  text-align: center;
  margin-bottom: 25px;
  color: var(--primary-color);
  font-size: 22px;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group input {
  width: 100%;
  padding: 12px;
  border: 2px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  transition: all 0.3s;
  background: white;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(237, 7, 7, 0.1);
}

.btn {
  width: 100%;
  padding: 12px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s;
  margin-bottom: 15px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-small {
  width: auto;
  padding: 8px 16px;
  font-size: 12px;
  margin: 0;
}

.auth-switch {
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
}

.auth-switch a {
  color: var(--primary-color);
  text-decoration: none;
  cursor: pointer;
  font-weight: bold;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  margin-bottom: 20px;
}

.card {
  background: var(--surface);
  padding: 20px;
  border-radius: 12px;
  box-shadow: var(--shadow);
  border: 2px solid var(--border);
  transition: all 0.3s;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.card h3 {
  color: var(--primary-color);
  margin-bottom: 15px;
  font-size: 16px;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-card {
  text-align: center;
  padding: 25px;
}

.stat-number {
  font-size: 36px;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 8px;
}

.stat-label {
  color: var(--text-secondary);
  margin-top: 8px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.referral-code {
  background: var(--background);
  padding: 12px;
  border-radius: 6px;
  font-family: monospace;
  font-size: 14px;
  text-align: center;
  border: 2px dashed var(--primary-color);
}

.reward-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 4px;
  font-size: 12px;
}

.reward-locked {
  opacity: 0.6;
}

.reward-unlocked {
  background: #f0fdf4;
  border-color: var(--secondary-color);
}

.donation-table-section {
  margin-top: 20px;
}

.donation-table-section h2 {
  font-size: 18px;
  margin-bottom: 15px;
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.donation-form {
  background: var(--surface);
  padding: 15px;
  border-radius: 10px;
  margin-bottom: 15px;
  border: 2px solid var(--border);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr 1fr auto;
  gap: 10px;
  align-items: end;
  margin-bottom: 10px;
}

.form-row input,
.form-row textarea {
  padding: 8px;
  border: 2px solid var(--border);
  border-radius: 6px;
  font-size: 12px;
}

.form-row textarea {
  resize: vertical;
  min-height: 60px;
}

.form-row input[type="file"] {
  padding: 6px;
  font-size: 11px;
}

.donation-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
  font-size: 12px;
  background: var(--surface);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.donation-table th,
.donation-table td {
  padding: 10px 12px;
  border: 1px solid var(--border);
  text-align: left;
}

.donation-table th {
  background-color: var(--primary-color);
  color: white;
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.donation-table tbody tr:hover {
  background-color: #f9f9f9;
}

.donation-table img {
  max-height: 40px;
  max-width: 50px;
  border-radius: 4px;
  object-fit: cover;
}

.total-row {
  background: var(--primary-color) !important;
  color: white;
  font-weight: bold;
  font-size: 13px;
}

.edit-btn,
.delete-btn {
  padding: 4px 8px;
  margin: 0 2px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 11px;
  transition: all 0.3s;
}

.edit-btn {
  background: #007bff;
  color: white;
}

.edit-btn:hover {
  background: #0056b3;
}

.delete-btn {
  background: #dc3545;
  color: white;
}

.delete-btn:hover {
  background: #c82333;
}

.leaderboard-table {
  background: var(--surface);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

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

.leaderboard-table th,
.leaderboard-table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

.leaderboard-table th {
  background: var(--primary-color);
  color: white;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.leaderboard-table tr:hover {
  background: var(--background);
}

.rank-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  font-weight: bold;
  color: white;
  font-size: 12px;
}

.rank-1 {
  background: #fbbf24;
}
.rank-2 {
  background: #9ca3af;
}
.rank-3 {
  background: #cd7c2f;
}
.rank-other {
  background: var(--primary-color);
}

.loading {
  text-align: center;
  padding: 20px;
}

.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--border);
  border-top: 3px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@media (max-width: 768px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }

  .header-content {
    flex-direction: column;
    gap: 10px;
  }

  .nav-buttons {
    display: flex;
    gap: 5px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .donation-table {
    font-size: 11px;
  }

  .donation-table th,
  .donation-table td {
    padding: 8px;
  }
}