/* ========== Design Tokens ========== */
:root {
  --background: 240 10% 3.9%;
  --foreground: 0 0% 95%;
  --card: 240 6% 6%;
  --card-foreground: 0 0% 95%;
  --primary: 48 96% 53%;
  --primary-foreground: 240 10% 3.9%;
  --secondary: 240 4% 12%;
  --secondary-foreground: 0 0% 95%;
  --muted: 240 4% 12%;
  --muted-foreground: 240 5% 55%;
  --accent: 142 71% 45%;
  --accent-foreground: 240 10% 3.9%;
  --destructive: 0 72% 51%;
  --destructive-foreground: 0 0% 95%;
  --border: 240 4% 16%;
  --input: 240 4% 16%;
  --ring: 48 96% 53%;
  --warning: 38 92% 50%;
  --warning-foreground: 240 10% 3.9%;
  --info: 217 91% 60%;
  --info-foreground: 0 0% 95%;
  --radius: 0.5rem;
}

/* ========== Reset & Base ========== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.font-mono {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ========== Container ========== */
.container {
  max-width: 64rem;
  margin: 0 auto;
  padding: 1.5rem;
}

/* ========== Spacing utilities ========== */
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mt-1 { margin-top: 0.25rem; }

/* ========== Config Bar ========== */
.config-bar {
  background: hsl(var(--card));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.config-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  width: 100%;
  background: none;
  border: none;
  color: hsl(var(--muted-foreground));
  cursor: pointer;
  font-size: 0.875rem;
  font-family: inherit;
}

.config-toggle:hover {
  color: hsl(var(--foreground));
}

.config-toggle svg {
  width: 1rem;
  height: 1rem;
  transition: transform 0.2s;
}

.config-toggle.open svg {
  transform: rotate(90deg);
}

.config-body {
  display: none;
  padding: 0 1rem 1rem;
  gap: 0.75rem;
}

.config-body.open {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.config-field label {
  display: block;
  font-size: 0.75rem;
  font-family: 'JetBrains Mono', monospace;
  color: hsl(var(--muted-foreground));
  margin-bottom: 0.25rem;
}

.config-field input {
  width: 100%;
  height: 2.25rem;
  padding: 0 0.75rem;
  background: hsl(var(--secondary));
  border: 1px solid hsl(var(--input));
  border-radius: var(--radius);
  color: hsl(var(--foreground));
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.875rem;
  outline: none;
  transition: box-shadow 0.15s;
}

.config-field input:focus {
  box-shadow: 0 0 0 2px hsl(var(--ring) / 0.4);
}

.config-field input::placeholder {
  color: hsl(var(--muted-foreground));
}

.config-status {
  font-size: 0.625rem;
  color: hsl(var(--accent));
  padding: 0.25rem 1rem 0;
  grid-column: 1 / -1;
}

.config-status.unconfigured {
  color: hsl(var(--warning));
}

/* ========== Page Header ========== */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.page-header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: hsl(var(--foreground));
}

.page-header p {
  font-size: 0.875rem;
  color: hsl(var(--muted-foreground));
  margin-top: 0.25rem;
}

.lang-toggle {
  display: flex;
  background: hsl(var(--secondary));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  overflow: hidden;
  flex-shrink: 0;
  margin-top: 0.25rem;
}

.lang-toggle button {
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-family: inherit;
  font-weight: 500;
  background: none;
  border: none;
  color: hsl(var(--muted-foreground));
  cursor: pointer;
  transition: all 0.15s;
}

.lang-toggle button.active {
  background: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
}

/* ========== Module Grid ========== */
.module-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
}

@media (min-width: 768px) {
  .module-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 1024px) {
  .module-grid { grid-template-columns: repeat(5, 1fr); }
}

/* ========== Module Card ========== */
.module-card {
  text-align: left;
  padding: 0.75rem;
  border-radius: var(--radius);
  border: 1px solid hsl(var(--border));
  background: hsl(var(--card));
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
  width: 100%;
}

.module-card:hover {
  border-color: hsl(var(--muted-foreground) / 0.3);
}

.module-card .icon {
  width: 1rem;
  height: 1rem;
  color: hsl(var(--muted-foreground));
  margin-bottom: 0.25rem;
}

.module-card .name {
  font-size: 0.875rem;
  font-weight: 500;
  color: hsl(var(--foreground));
  display: block;
}

.module-card .id {
  font-size: 10px;
  font-family: 'JetBrains Mono', monospace;
  color: hsl(var(--muted-foreground));
}

/* Active state */
.module-card.active {
  border-color: hsl(var(--primary));
  background: hsl(var(--primary) / 0.1);
  box-shadow: 0 0 20px -5px hsl(var(--primary) / 0.3);
}

.module-card.active .icon {
  color: hsl(var(--primary));
}

.module-card.active .name {
  color: hsl(var(--primary));
}

.module-card.disabled {
  opacity: 0.45;
  border-style: dashed;
}

.module-card.disabled:hover {
  border-color: hsl(var(--destructive) / 0.5);
}

.module-card.disabled.active {
  border-color: hsl(var(--destructive));
  background: hsl(var(--destructive) / 0.08);
  box-shadow: none;
}

.module-card.disabled.active .icon,
.module-card.disabled.active .name {
  color: hsl(var(--destructive));
}

/* ========== Module Description ========== */
.module-desc {
  font-size: 0.875rem;
  color: hsl(var(--muted-foreground));
}

.module-desc svg {
  display: inline;
  width: 1rem;
  height: 1rem;
  margin-right: 0.25rem;
  vertical-align: -2px;
}

.module-desc-warning {
  font-size: 0.8rem;
  color: hsl(var(--warning));
  margin-top: 0.35rem;
}

.module-desc-warning svg {
  display: inline;
  width: 0.9rem;
  height: 0.9rem;
  vertical-align: -2px;
}

/* ========== Card (Parameters) ========== */
.card {
  background: hsl(var(--card));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.card-header {
  padding: 1.5rem 1.5rem 0.75rem;
}

.card-title {
  font-size: 0.875rem;
  font-family: 'JetBrains Mono', monospace;
  color: hsl(var(--muted-foreground));
  font-weight: 500;
}

.card-content {
  padding: 0 1.5rem 1.5rem;
}

.no-params {
  font-size: 0.875rem;
  font-family: 'JetBrains Mono', monospace;
  color: hsl(var(--muted-foreground));
  padding: 0.5rem 0;
}

/* ========== Params Grid ========== */
.params-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

@media (min-width: 768px) {
  .params-grid { grid-template-columns: repeat(3, 1fr); }
}

.param-label {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  font-family: 'JetBrains Mono', monospace;
  color: hsl(var(--muted-foreground));
  margin-bottom: 0.25rem;
}

.param-required {
  font-size: 10px;
  color: hsl(var(--destructive));
}

.param-input {
  width: 100%;
  height: 2.25rem;
  padding: 0 0.75rem;
  background: hsl(var(--secondary));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  color: hsl(var(--foreground));
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.875rem;
  outline: none;
  transition: box-shadow 0.15s;
}

.param-input:focus {
  box-shadow: 0 0 0 2px hsl(var(--ring) / 0.4);
}

.param-input::placeholder {
  color: hsl(var(--muted-foreground));
}

/* ========== Action Bar ========== */
.action-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  height: 2.5rem;
  padding: 0.5rem 1rem;
  background: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
}

.btn-primary:hover:not(:disabled) {
  background: hsl(var(--primary) / 0.9);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-outline {
  height: 2rem;
  padding: 0 0.75rem;
  font-size: 0.75rem;
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  border: 1px solid hsl(var(--input));
}

.btn-outline:hover {
  background: hsl(var(--accent) / 0.1);
  color: hsl(var(--accent-foreground));
}

.btn svg {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

.btn-outline svg {
  width: 0.75rem;
  height: 0.75rem;
}

/* ========== Timing ========== */
.timing {
  font-size: 0.875rem;
  font-family: 'JetBrains Mono', monospace;
  color: hsl(var(--muted-foreground));
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-variant-numeric: tabular-nums;
}

.timing svg {
  width: 0.75rem;
  height: 0.75rem;
}

/* ========== Badges ========== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.625rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.5;
  border: 1px solid transparent;
}

.badge svg {
  width: 0.75rem;
  height: 0.75rem;
  margin-right: 0.25rem;
}

.badge-cached {
  background: hsl(var(--accent) / 0.1);
  color: hsl(var(--accent));
  border-color: hsl(var(--accent) / 0.3);
}

.badge-stale {
  background: hsl(var(--warning) / 0.1);
  color: hsl(var(--warning));
  border-color: hsl(var(--warning) / 0.3);
}

.badge-error {
  background: hsl(var(--destructive));
  color: hsl(var(--destructive-foreground));
}

.badge-warning {
  background: hsl(var(--warning) / 0.2);
  color: hsl(var(--warning));
  border-color: hsl(var(--warning) / 0.4);
}

.badge-info {
  background: hsl(var(--info) / 0.2);
  color: hsl(var(--info));
  border-color: hsl(var(--info) / 0.4);
}

/* ========== Source Label ========== */
.source-label {
  font-size: 10px;
  font-family: 'JetBrains Mono', monospace;
  color: hsl(var(--muted-foreground));
}

/* ========== Response Area ========== */
.response-area {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.3s ease forwards;
}

/* ========== Summary Cards ========== */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-bottom: 1rem;
}

@media (min-width: 768px) {
  .summary-grid { grid-template-columns: repeat(4, 1fr); }
}

.summary-card {
  background: hsl(var(--secondary));
  border-radius: var(--radius);
  padding: 0.75rem;
  opacity: 0;
  transform: translateY(10px);
  animation: fadeInUp 0.3s ease forwards;
}

.summary-card .key {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: 'JetBrains Mono', monospace;
  color: hsl(var(--muted-foreground));
}

.summary-card .value {
  font-size: 1.25rem;
  font-weight: 600;
  color: hsl(var(--foreground));
  margin-top: 0.25rem;
  font-variant-numeric: tabular-nums;
}

/* ========== Alert Badges ========== */
.alert-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

/* ========== JSON Viewer ========== */
.json-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.json-toolbar-right {
  display: flex;
  gap: 0.5rem;
}

.json-pre {
  background: hsl(var(--secondary));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  padding: 1rem;
  font-size: 0.75rem;
  line-height: 1.625;
  font-family: 'JetBrains Mono', monospace;
  color: hsl(var(--muted-foreground));
  overflow: auto;
  max-height: 500px;
  white-space: pre-wrap;
  word-break: break-word;
}

/* ========== Animations ========== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.animate-spin {
  animation: spin 1s linear infinite;
}

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

::-webkit-scrollbar-track {
  background: hsl(var(--background));
}

::-webkit-scrollbar-thumb {
  background: hsl(var(--border));
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: hsl(var(--muted-foreground));
}

/* ========== Tab Navigation ========== */
.tab-nav {
  display: flex;
  background: hsl(var(--secondary));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  overflow: hidden;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  font-size: 0.75rem;
  font-family: inherit;
  font-weight: 500;
  background: none;
  border: none;
  color: hsl(var(--muted-foreground));
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}

.tab-btn svg {
  width: 0.875rem;
  height: 0.875rem;
}

.tab-btn.active {
  background: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
}

.tab-btn:not(.active):hover {
  background: hsl(var(--muted) / 0.5);
}

/* ========== Meta Tags (edge location, request ID) ========== */
.meta-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 10px;
  font-family: 'JetBrains Mono', monospace;
  color: hsl(var(--muted-foreground));
  background: hsl(var(--secondary));
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius);
  border: 1px solid hsl(var(--border));
}

.meta-tag svg {
  width: 0.625rem;
  height: 0.625rem;
  flex-shrink: 0;
}

/* ========== Monitor Panel ========== */
.monitor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.monitor-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.monitor-header h2 svg {
  width: 1.25rem;
  height: 1.25rem;
  color: hsl(var(--primary));
}

.monitor-empty {
  text-align: center;
  padding: 3rem 1rem;
  color: hsl(var(--muted-foreground));
  font-size: 0.875rem;
}

.monitor-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 768px) {
  .monitor-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1280px) {
  .monitor-grid { grid-template-columns: repeat(4, 1fr); }
}

.monitor-card .card-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.monitor-card .card-title svg {
  width: 0.875rem;
  height: 0.875rem;
  color: hsl(var(--primary));
}

.monitor-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.375rem 0;
  border-bottom: 1px solid hsl(var(--border) / 0.5);
  font-size: 0.8125rem;
}

.monitor-row:last-child {
  border-bottom: none;
}

.monitor-label {
  color: hsl(var(--muted-foreground));
}

.monitor-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  color: hsl(var(--foreground));
  text-align: right;
}

/* ========== Responsive: Config bar ========== */
@media (max-width: 767px) {
  .config-body.open {
    grid-template-columns: 1fr;
  }

  .page-header {
    flex-direction: column;
    gap: 0.75rem;
  }

  .tab-nav {
    width: 100%;
  }

  .tab-btn {
    flex: 1;
    justify-content: center;
  }
}