/* ==================== CSS Variables & Reset ==================== */
:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.8);
  --bg-card-hover: rgba(30, 41, 59, 0.9);
  --bg-input: rgba(30, 41, 59, 0.6);
  --bg-modal: rgba(17, 24, 39, 0.95);

  --border-color: rgba(99, 102, 241, 0.15);
  --border-color-hover: rgba(99, 102, 241, 0.35);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-blue: #6366f1;
  --accent-blue-light: #818cf8;
  --accent-violet: #8b5cf6;
  --accent-cyan: #06b6d4;

  --status-available: #22c55e;
  --status-available-bg: rgba(34, 197, 94, 0.12);
  --status-active: #6366f1;
  --status-active-bg: rgba(99, 102, 241, 0.12);
  --status-error: #ef4444;
  --status-error-bg: rgba(239, 68, 68, 0.12);

  --gradient-primary: linear-gradient(135deg, #6366f1, #8b5cf6, #a78bfa);
  --gradient-success: linear-gradient(135deg, #22c55e, #16a34a);
  --gradient-error: linear-gradient(135deg, #ef4444, #dc2626);
  --gradient-bg: linear-gradient(135deg, #0a0e17 0%, #111827 50%, #0f172a 100%);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.15);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--gradient-bg);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Animated background pattern */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(600px circle at 20% 20%, rgba(99, 102, 241, 0.06), transparent 50%),
    radial-gradient(800px circle at 80% 50%, rgba(139, 92, 246, 0.05), transparent 50%),
    radial-gradient(500px circle at 50% 80%, rgba(6, 182, 212, 0.04), transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* ==================== Header ==================== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(10, 14, 23, 0.85);
  border-bottom: 1px solid var(--border-color);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0.875rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  color: white;
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.logo-icon svg {
  width: 22px;
  height: 22px;
}

.logo h1 {
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.header-subtitle {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
}

/* ==================== Container ==================== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.5rem;
  position: relative;
  z-index: 1;
}

/* ==================== Stats Grid ==================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  backdrop-filter: blur(10px);
  transition: var(--transition);
  cursor: default;
}

.stat-card:hover {
  border-color: var(--border-color-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.stat-icon svg {
  width: 24px;
  height: 24px;
}

.stat-total .stat-icon {
  background: rgba(99, 102, 241, 0.12);
  color: var(--accent-blue-light);
}

.stat-available .stat-icon {
  background: var(--status-available-bg);
  color: var(--status-available);
}

.stat-active .stat-icon {
  background: var(--status-active-bg);
  color: var(--status-active);
}

.stat-error .stat-icon {
  background: var(--status-error-bg);
  color: var(--status-error);
}

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.stat-total .stat-value { color: var(--accent-blue-light); }
.stat-available .stat-value { color: var(--status-available); }
.stat-active .stat-value { color: var(--status-active); }
.stat-error .stat-value { color: var(--status-error); }

.stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
  margin-top: 2px;
}

/* ==================== Cards ==================== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  margin-bottom: 1.5rem;
  overflow: hidden;
}

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

.card-header h2 {
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-primary);
}

.card-header h2 svg {
  color: var(--accent-blue-light);
}

/* ==================== Form ==================== */
.form-card .card-header {
  cursor: pointer;
  user-select: none;
  transition: var(--transition);
}

.form-card .card-header:hover {
  background: rgba(99, 102, 241, 0.04);
}

.chevron {
  transition: transform 0.3s ease;
  color: var(--text-muted);
}

.chevron.collapsed {
  transform: rotate(-90deg);
}

.form-wrapper {
  max-height: 400px;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.3s ease;
}

.form-wrapper.collapsed {
  max-height: 0;
}

.form-wrapper form {
  padding: 1.5rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group textarea {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.625rem 0.875rem;
  font-size: 0.9rem;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  letter-spacing: 0.03em;
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
  font-family: 'Inter', sans-serif;
  letter-spacing: 0;
}

.form-hint {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  padding-top: 0.5rem;
}

/* ==================== Buttons ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.125rem;
  border-radius: var(--radius-sm);
  border: none;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 2px 10px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-success {
  background: var(--gradient-success);
  color: white;
}

.btn-danger {
  background: var(--gradient-error);
  color: white;
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.btn-ghost:hover {
  background: rgba(99, 102, 241, 0.08);
  border-color: var(--border-color-hover);
  color: var(--text-primary);
}

.btn-sm {
  padding: 0.35rem 0.625rem;
  font-size: 0.75rem;
  border-radius: 6px;
}

.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.btn-icon:hover {
  background: rgba(99, 102, 241, 0.1);
  border-color: var(--border-color);
  color: var(--accent-blue-light);
}

.btn-icon.danger:hover {
  background: rgba(239, 68, 68, 0.1);
  color: var(--status-error);
}

/* ==================== List Controls ==================== */
.list-header {
  flex-wrap: wrap;
  gap: 1rem;
}

.list-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.375rem 0.75rem;
  transition: var(--transition);
}

.search-box:focus-within {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.search-box svg {
  color: var(--text-muted);
  flex-shrink: 0;
}

.search-box input {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 0.85rem;
  outline: none;
  width: 220px;
  font-family: inherit;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.filter-tabs {
  display: flex;
  gap: 0.25rem;
  background: rgba(15, 23, 42, 0.5);
  padding: 3px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.filter-btn {
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition);
  background: transparent;
  color: var(--text-secondary);
  font-family: inherit;
}

.filter-btn:hover {
  color: var(--text-primary);
  background: rgba(99, 102, 241, 0.08);
}

.filter-btn.active {
  background: var(--accent-blue);
  color: white;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

/* ==================== Table ==================== */
.table-wrapper {
  overflow-x: auto;
}

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

.esim-table th {
  padding: 0.75rem 1rem;
  text-align: left;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-bottom: 1px solid var(--border-color);
  background: rgba(15, 23, 42, 0.3);
}

.esim-table td {
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  border-bottom: 1px solid rgba(99, 102, 241, 0.05);
  vertical-align: middle;
}

.esim-table tbody tr {
  transition: var(--transition);
}

.esim-table tbody tr:hover:not(.empty-row) {
  background: rgba(99, 102, 241, 0.04);
}

.iccid-cell {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--accent-blue-light);
  cursor: pointer;
}

.iccid-cell:hover {
  text-decoration: underline;
}

.msisdn-cell {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.8rem;
  color: var(--text-primary);
}

/* Status Badges */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.status-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.status-disponivel {
  background: var(--status-available-bg);
  color: var(--status-available);
}

.status-disponivel .dot {
  background: var(--status-available);
  box-shadow: 0 0 6px var(--status-available);
  animation: pulse-dot 2s infinite;
}

.status-ativo {
  background: var(--status-active-bg);
  color: var(--status-active);
}

.status-ativo .dot {
  background: var(--status-active);
  box-shadow: 0 0 6px var(--status-active);
}

.status-erro {
  background: var(--status-error-bg);
  color: var(--status-error);
}

.status-erro .dot {
  background: var(--status-error);
  box-shadow: 0 0 6px var(--status-error);
  animation: pulse-dot 1.5s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Actions */
.actions-cell {
  display: flex;
  gap: 0.25rem;
}

/* Date cell */
.date-cell {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Empty state */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

.empty-state svg {
  opacity: 0.3;
  margin-bottom: 0.5rem;
}

.empty-state p {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.empty-state span {
  font-size: 0.8rem;
}

/* ==================== Modals ==================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  display: none;
  place-items: center;
  z-index: 1000;
  padding: 1rem;
  animation: fadeIn 0.2s ease;
}

.modal-overlay.active {
  display: grid;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal {
  background: var(--bg-modal);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 480px;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-wide {
  max-width: 640px;
}

.modal-sm {
  max-width: 400px;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 1rem;
  font-weight: 600;
}

.modal-header-error h3 {
  color: var(--status-error);
}

.btn-close {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 1.25rem;
  cursor: pointer;
  border-radius: 8px;
  display: grid;
  place-items: center;
  transition: var(--transition);
}

.btn-close:hover {
  background: rgba(239, 68, 68, 0.1);
  color: var(--status-error);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* QR Code Modal */
.qr-modal-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.qr-container {
  background: white;
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: grid;
  place-items: center;
  min-width: 280px;
  min-height: 280px;
}

.qr-container img {
  width: 250px;
  height: 250px;
}

.qr-loading {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.qr-info {
  text-align: center;
  width: 100%;
}

.qr-info .qr-lpa {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.7rem;
  color: var(--text-muted);
  background: var(--bg-input);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  word-break: break-all;
  border: 1px solid var(--border-color);
}

.qr-info .qr-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 0.375rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Detail Modal */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.detail-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.detail-item.full-width {
  grid-column: 1 / -1;
}

.detail-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.detail-value {
  font-size: 0.9rem;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  letter-spacing: 0.02em;
  word-break: break-all;
  background: var(--bg-input);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.detail-error {
  grid-column: 1 / -1;
  background: var(--status-error-bg);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--status-error);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ==================== Toast Notifications ==================== */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 500;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.3s ease, toastOut 0.3s ease 3.7s forwards;
  max-width: 380px;
  border: 1px solid;
}

.toast-success {
  background: rgba(34, 197, 94, 0.15);
  color: #4ade80;
  border-color: rgba(34, 197, 94, 0.2);
}

.toast-error {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border-color: rgba(239, 68, 68, 0.2);
}

.toast-info {
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent-blue-light);
  border-color: rgba(99, 102, 241, 0.2);
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(100%); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(100%); }
}

/* ==================== Responsive ==================== */
@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .list-controls {
    width: 100%;
  }

  .search-box {
    width: 100%;
  }

  .search-box input {
    width: 100%;
  }

  .filter-tabs {
    width: 100%;
    overflow-x: auto;
  }

  .detail-grid {
    grid-template-columns: 1fr;
  }

  .header-inner {
    padding: 0.75rem 1rem;
  }

  .container {
    padding: 1rem;
  }

  .esim-table th:nth-child(4),
  .esim-table td:nth-child(4) {
    display: none;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
  }

  .stat-card {
    padding: 0.875rem;
  }

  .stat-value {
    font-size: 1.5rem;
  }

  .modal {
    border-radius: var(--radius-lg);
  }

  .actions-cell {
    flex-wrap: wrap;
  }
}

/* ==================== Scrollbar ==================== */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(99, 102, 241, 0.2);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(99, 102, 241, 0.4);
}

/* ==================== Loading skeleton ==================== */
.skeleton {
  background: linear-gradient(90deg,
    rgba(99, 102, 241, 0.05) 0%,
    rgba(99, 102, 241, 0.1) 50%,
    rgba(99, 102, 241, 0.05) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}