* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  -webkit-user-select: none;
  user-select: none;
}

:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --secondary: #ec4899;
  --accent: #06b6d4;
  --bg-dark: #0f172a;
  --bg-darker: #020617;
  --card-bg: rgba(15, 23, 42, 0.8);
  --card-border: rgba(100, 116, 139, 0.3);
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-user-select: text;
  user-select: text;
  color: var(--text-primary);
}

header {
  background: rgba(15, 23, 42, 0.95);
  color: white;
  padding: 1.2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--card-border);
  flex-wrap: wrap;
  gap: 1rem;
}

header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
  white-space: nowrap;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.checks-display {
  background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  white-space: nowrap;
  font-size: 0.95rem;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.checks-icon {
  font-size: 1.1rem;
}

.logout-btn {
  background: linear-gradient(135deg, var(--error) 0%, #dc2626 100%);
  color: white;
  border: 1px solid rgba(239, 68, 68, 0.3);
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
}

.logout-btn:active {
  transform: scale(0.97);
  box-shadow: 0 2px 6px rgba(239, 68, 68, 0.2);
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
}

.logout-btn:hover {
  background: #c0392b;
}

.container {
  max-width: none;
  width: 100%;
  margin: 2.5rem auto;
  padding: 0 1.5rem;
  flex: 1;
}

.tabs {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  border-bottom: 2px solid var(--card-border);
}

.tab-btn {
  background: rgba(100, 116, 139, 0.1);
  color: var(--text-secondary);
  border: none;
  padding: 1rem 1.8rem;
  cursor: pointer;
  border-radius: 6px 6px 0 0;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.2s ease;
  letter-spacing: -0.3px;
}

.tab-btn:active,
.tab-btn.active {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(6, 182, 212, 0.1) 100%);
  color: var(--text-primary);
  border-bottom: 3px solid var(--primary);
}

.tab-content {
  display: none;
  background: linear-gradient(135deg, var(--card-bg) 0%, rgba(30, 41, 59, 0.6) 100%);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 2.5rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(10px);
}

.tab-content.active {
  display: block;
}

.form-group {
  margin-bottom: 1.8rem;
}

label {
  display: block;
  margin-bottom: 0.6rem;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.95rem;
  letter-spacing: -0.3px;
}

input, textarea {
  width: 100%;
  padding: 0.9rem 1.2rem;
  border: 2px solid var(--card-border);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  transition: all 0.2s ease;
  -webkit-appearance: none;
  appearance: none;
  background-color: rgba(15, 23, 42, 0.9);
  color: var(--text-primary);
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  background-color: rgba(15, 23, 42, 1);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

button {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  border: 1px solid rgba(99, 102, 241, 0.3);
  padding: 0.8rem 1.8rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 700;
  transition: all 0.2s ease;
  white-space: nowrap;
  letter-spacing: -0.3px;
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.2);
}

button:active {
  transform: scale(0.97);
  box-shadow: 0 4px 10px rgba(99, 102, 241, 0.2);
}

button:hover {
  background: #5568d3;
}

.btn-secondary {
  background: linear-gradient(135deg, #64748b 0%, #475569 100%);
}

.btn-secondary:active {
  background: linear-gradient(135deg, #475569 0%, #334155 100%);
}

.btn-danger {
  background: linear-gradient(135deg, var(--error) 0%, #dc2626 100%);
}

.btn-danger:active {
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
}

.btn-success {
  background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
}

.btn-success:active {
  background: linear-gradient(135deg, #059669 0%, #047857 100%);
}

.message {
  padding: 1.2rem 1.5rem;
  border-radius: 10px;
  margin-bottom: 1.5rem;
  display: none;
  border: 1px solid;
  backdrop-filter: blur(10px);
  font-weight: 500;
}

.message.show {
  display: block;
}

.message.success {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
  border-color: rgba(16, 185, 129, 0.3);
}

.message.error {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.3);
}

.message.info {
  background: rgba(6, 182, 212, 0.1);
  color: #06b6d4;
  border-color: rgba(6, 182, 212, 0.3);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 2.5rem;
}

.card {
  background: linear-gradient(135deg, var(--card-bg) 0%, rgba(30, 41, 59, 0.6) 100%);
  border-radius: 12px;
  padding: 1.8rem;
  border: 1px solid var(--card-border);
  transition: all 0.3s ease;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(10px);
}

.card:active {
  transform: translateY(-4px);
  border-color: rgba(99, 102, 241, 0.6);
  box-shadow: 0 20px 60px rgba(99, 102, 241, 0.2);
}

.card h3 {
  color: var(--text-primary);
  margin-bottom: 0.6rem;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.card p {
  color: var(--text-muted);
  margin-bottom: 0.8rem;
  line-height: 1.6;
  font-size: 0.95rem;
}

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

.price-badge {
  background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
  color: white;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  font-weight: 700;
  display: inline-block;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1.5rem;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  overflow: hidden;
}

th {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(6, 182, 212, 0.05) 100%);
  padding: 1.2rem;
  text-align: left;
  border-bottom: 2px solid var(--card-border);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

td {
  padding: 1.2rem;
  border-bottom: 1px solid var(--card-border);
  color: var(--text-secondary);
}

tr:hover {
  background: rgba(99, 102, 241, 0.05);
}

.status-badge {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.status-pending {
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.status-completed {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.loading {
  text-align: center;
  color: var(--text-muted);
  padding: 2rem;
}

.spinner {
  border: 4px solid rgba(99, 102, 241, 0.1);
  border-top: 4px solid var(--primary);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem;
}

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

.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--text-muted);
}

.empty-state h2 {
  margin-bottom: 1rem;
  color: var(--text-secondary);
  font-size: 1.3rem;
}

@media (max-width: 768px) {
  header {
    padding: 1rem;
    gap: 0.8rem;
  }

  header h1 {
    font-size: 1.2rem;
  }

  .user-info {
    flex-direction: column;
    width: 100%;
    gap: 0.8rem;
  }

  .checks-display {
    width: 100%;
    justify-content: center;
  }

  .logout-btn {
    width: 100%;
  }

  .container {
    margin: 1.5rem auto;
    padding: 0 1rem;
  }

  .tabs {
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
  }

  .tab-btn {
    border-radius: 6px;
    margin-bottom: 0;
    padding: 0.8rem 1.2rem;
    font-size: 0.9rem;
  }

  .tab-btn.active {
    border-bottom: none;
    border-radius: 6px;
  }

  .tab-content {
    padding: 1.5rem;
  }

  .form-group {
    margin-bottom: 1.2rem;
  }

  label {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
  }

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

  .grid {
    grid-template-columns: 1fr;
    gap: 1.2rem;
    margin-top: 2rem;
  }

  .card {
    padding: 1.3rem;
  }

  .card h3 {
    font-size: 1rem;
  }

  button {
    width: 100%;
    padding: 0.7rem 1.2rem;
    font-size: 0.9rem;
  }

  table {
    font-size: 0.9rem;
  }

  th, td {
    padding: 0.8rem;
  }

  .status-badge {
    padding: 0.3rem 0.7rem;
    font-size: 0.8rem;
  }

  input, textarea {
    padding: 0.8rem 1rem;
    font-size: 1rem;
  }

  .price-badge {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
  }

  /* Stack redeem input vertically on tablet */
  #redeemInputWrapper {
    flex-direction: column !important;
  }

  #redeemInputWrapper input {
    width: 100% !important;
  }

  #redeemInputWrapper button {
    width: 100% !important;
  }
}

@media (max-width: 480px) {
  header {
    padding: 0.8rem;
    gap: 0.6rem;
    justify-content: center;
  }

  .logo-link {
    flex-direction: column;
    justify-content: center;
    align-items: center !important;
    gap: 0.5rem !important;
  }

  .logo-img {
    height: 60px !important;
    width: auto !important;
  }

  .logo-text {
    font-size: 1.4rem !important;
  }

  header h1 {
    font-size: 1.1rem;
  }

  .user-info {
    gap: 0.6rem;
  }

  .checks-display {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
  }

  .logout-btn {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
  }

  .container {
    margin: 1.2rem auto;
    padding: 0 0.8rem;
  }

  .tabs {
    gap: 0.3rem;
    margin-bottom: 1.2rem;
  }

  .tab-btn {
    padding: 0.7rem 1rem;
    font-size: 0.85rem;
    margin-bottom: 0.3rem;
  }

  .tab-content {
    padding: 1.2rem;
    border-radius: 10px;
  }

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

  label {
    font-size: 0.9rem;
  }

  input, textarea {
    padding: 0.75rem;
    font-size: 1rem;
  }

  button {
    padding: 0.65rem 1.2rem;
    font-size: 0.85rem;
  }

  .grid {
    gap: 1rem;
    margin-top: 1.5rem;
  }

  .card {
    padding: 1.1rem;
  }

  .card h3 {
    font-size: 0.95rem;
    margin-bottom: 0.4rem;
  }

  .card p {
    font-size: 0.9rem;
  }

  .price-badge {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
  }

  table {
    font-size: 0.85rem;
  }

  th, td {
    padding: 0.6rem;
  }

  .status-badge {
    padding: 0.25rem 0.6rem;
    font-size: 0.75rem;
  }

  .card-footer {
    margin-top: 1rem;
    padding-top: 1rem;
  }

  .empty-state {
    padding: 2rem 0.8rem;
  }

  .empty-state h2 {
    font-size: 1.2rem;
  }

  .form-row {
    gap: 0.8rem;
  }

  /* Stack redeem input vertically on mobile */
  #redeemInputWrapper {
    flex-direction: column !important;
    gap: 0.75rem !important;
  }

  #redeemInputWrapper input {
    width: 100% !important;
  }

  #redeemInputWrapper button {
    width: 100% !important;
  }
}