/**
 * Crypto API Hub Page Styles
 * Integrated with design system
 */

/* ============================================================================
   STATS GRID
   ============================================================================ */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.stat-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--surface-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-light);
  background: var(--surface-glass-strong);
}

.stat-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--glow-blue);
  flex-shrink: 0;
}

.stat-icon svg {
  color: white;
}

.stat-content {
  flex: 1;
  min-width: 0;
}

.stat-value {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-strong);
  line-height: 1.2;
  margin-bottom: var(--space-1);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: var(--font-weight-medium);
}

/* ============================================================================
   CONTROLS SECTION
   ============================================================================ */

.controls-section {
  background: var(--surface-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-6);
}

.search-wrapper {
  position: relative;
  margin-bottom: var(--space-4);
}

.search-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: var(--space-3) var(--space-4) var(--space-3) calc(var(--space-4) * 2.5);
  background: var(--surface-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-normal);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-normal);
}

.search-input:focus {
  outline: none;
  border-color: var(--brand-blue);
  background: var(--surface-glass-strong);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

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

/* ============================================================================
   FILTER TABS
   ============================================================================ */

.filter-tabs {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.filter-tab {
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--border-subtle);
  background: var(--surface-panel);
  border-radius: var(--radius-md);
  color: var(--text-soft);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.filter-tab:hover {
  background: var(--surface-glass-strong);
  border-color: var(--brand-blue);
  color: var(--text-strong);
  transform: translateY(-1px);
}

.filter-tab.active {
  background: var(--gradient-primary);
  border-color: transparent;
  color: white;
  box-shadow: var(--glow-blue);
}

/* ============================================================================
   SERVICES GRID
   ============================================================================ */

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}

.service-card {
  background: var(--surface-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-gradient, var(--gradient-primary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-light);
  background: var(--surface-glass-strong);
}

.service-card:hover::before {
  transform: scaleX(1);
}

/* Gradient variations for cards */
.service-card:nth-child(8n+1) { --card-gradient: linear-gradient(135deg, #667eea, #764ba2); }
.service-card:nth-child(8n+2) { --card-gradient: linear-gradient(135deg, #f093fb, #f5576c); }
.service-card:nth-child(8n+3) { --card-gradient: linear-gradient(135deg, #4facfe, #00f2fe); }
.service-card:nth-child(8n+4) { --card-gradient: linear-gradient(135deg, #43e97b, #38f9d7); }
.service-card:nth-child(8n+5) { --card-gradient: linear-gradient(135deg, #fa709a, #fee140); }
.service-card:nth-child(8n+6) { --card-gradient: linear-gradient(135deg, #30cfd0, #330867); }
.service-card:nth-child(8n+7) { --card-gradient: linear-gradient(135deg, #a8edea, #fed6e3); }
.service-card:nth-child(8n+8) { --card-gradient: linear-gradient(135deg, #ff9a9e, #fecfef); }

.service-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.service-icon {
  width: 56px;
  height: 56px;
  background: var(--card-gradient, var(--gradient-primary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--glow-blue);
  transition: transform var(--transition-normal);
}

.service-card:hover .service-icon {
  transform: scale(1.08) rotate(3deg);
}

.service-icon svg {
  width: 28px;
  height: 28px;
  color: white;
}

.service-info {
  flex: 1;
  min-width: 0;
}

.service-name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--text-strong);
  margin-bottom: var(--space-1);
  font-family: var(--font-display);
}

.service-url {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  word-break: break-all;
  opacity: 0.9;
}

/* ============================================================================
   SERVICE BADGES
   ============================================================================ */

.service-badges {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}

.badge {
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.badge-category {
  background: rgba(102, 126, 234, 0.2);
  color: #a8b7ff;
  border: 1px solid rgba(102, 126, 234, 0.3);
}

.badge-endpoints {
  background: rgba(79, 172, 254, 0.2);
  color: #7dd3fc;
  border: 1px solid rgba(79, 172, 254, 0.3);
}

.badge-key {
  background: rgba(67, 233, 123, 0.2);
  color: #86efac;
  border: 1px solid rgba(67, 233, 123, 0.3);
}

/* ============================================================================
   ENDPOINTS LIST
   ============================================================================ */

.endpoints-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.endpoint-item {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  transition: all var(--transition-normal);
}

.endpoint-item:hover {
  border-color: var(--brand-blue);
  background: rgba(0, 0, 0, 0.6);
  transform: translateX(4px);
}

.endpoint-path {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--brand-cyan-light);
  word-break: break-all;
  margin-bottom: var(--space-3);
  line-height: 1.6;
}

.endpoint-actions {
  display: flex;
  gap: var(--space-2);
}

.btn-sm {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border-subtle);
  background: var(--surface-panel);
  color: var(--text-normal);
  border-radius: var(--radius-sm);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-xs);
  cursor: pointer;
  transition: all var(--transition-normal);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.btn-sm:hover {
  background: var(--gradient-primary);
  border-color: transparent;
  transform: translateY(-1px);
  box-shadow: var(--glow-blue);
  color: white;
}

.btn-sm svg {
  width: 14px;
  height: 14px;
}

/* ============================================================================
   MODAL STYLES
   ============================================================================ */

.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: var(--z-modal, 1000);
  padding: var(--space-6);
  overflow-y: auto;
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
  animation: fadeIn 0.3s ease;
}

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

.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--surface-overlay);
  backdrop-filter: var(--blur-md);
}

.modal-content {
  background: var(--background-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-2xl);
  animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  z-index: 1;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--gradient-primary);
}

.modal-header h2 {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: white;
  margin: 0;
}

.modal-close {
  width: 40px;
  height: 40px;
  border: none;
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background: rgba(239, 68, 68, 0.8);
  transform: rotate(90deg) scale(1.1);
}

.modal-body {
  padding: var(--space-6);
}

/* ============================================================================
   FORM STYLES
   ============================================================================ */

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-2);
  color: var(--text-strong);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-normal);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  transition: all var(--transition-normal);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
  background: rgba(0, 0, 0, 0.6);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
  font-family: var(--font-mono);
}

/* ============================================================================
   METHOD BUTTONS
   ============================================================================ */

.method-buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-2);
}

.method-btn {
  padding: var(--space-3);
  border: 1px solid var(--border-subtle);
  background: var(--surface-panel);
  color: var(--text-soft);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.method-btn:hover {
  background: var(--surface-glass-strong);
  border-color: var(--brand-blue);
  color: var(--text-strong);
}

.method-btn.active {
  background: var(--gradient-primary);
  border-color: transparent;
  color: white;
  box-shadow: var(--glow-blue);
}

/* ============================================================================
   RESPONSE CONTAINER
   ============================================================================ */

.response-container {
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-top: var(--space-5);
  max-height: 400px;
  overflow-y: auto;
}

.response-container h3 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--text-strong);
  margin-bottom: var(--space-3);
}

.response-json {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  line-height: 1.7;
  color: var(--brand-cyan-light);
  white-space: pre-wrap;
  word-break: break-all;
  margin: 0;
}

/* ============================================================================
   BUTTON UTILITIES
   ============================================================================ */

.btn-block {
  width: 100%;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--glow-blue);
}

.btn-primary:hover {
  box-shadow: var(--glow-blue-strong);
}

.btn-secondary {
  background: var(--surface-glass);
  border: 1px solid var(--border-light);
  color: var(--text-strong);
}

.btn-secondary:hover {
  background: var(--surface-glass-strong);
  border-color: var(--brand-blue);
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */

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

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .filter-tabs {
    justify-content: center;
  }

  .method-buttons {
    grid-template-columns: repeat(2, 1fr);
  }
}

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