/* ============================================================
   OpenAPI Mock Server — Styles
   Theme: Dark — Electric Teal / Navy with grid-graph background
   ============================================================ */

/* ---------- Custom Properties ---------- */
:root {
  --c-bg: #0a0e1a;
  --c-surface: #111827;
  --c-surface-2: #1a2332;
  --c-border: #1e2d3d;
  --c-border-focus: #00e5a0;
  --c-primary: #00e5a0;
  --c-primary-dim: rgba(0, 229, 160, 0.15);
  --c-secondary: #06b6d4;
  --c-accent: #818cf8;
  --c-danger: #f43f5e;
  --c-warning: #f59e0b;
  --c-text: #e2e8f0;
  --c-text-dim: #94a3b8;
  --c-text-muted: #64748b;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --transition: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --glass: rgba(17, 24, 39, 0.7);
  --glass-border: rgba(30, 45, 61, 0.6);
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.6;
  min-height: 100vh;
  /* Grid-graph background */
  background-image:
    linear-gradient(rgba(0, 229, 160, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 160, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--c-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--c-text-muted); }

/* ---------- Selection ---------- */
::selection { background: var(--c-primary-dim); color: var(--c-primary); }

/* ---------- Focus ---------- */
:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
}

/* ---------- Header ---------- */
#app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--c-primary-dim);
  color: var(--c-primary);
}

h1 {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-actions {
  display: flex;
  gap: 0.5rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  font-weight: 500;
  font-family: var(--font-sans);
  border: none;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--c-primary), #00c48c);
  color: #0a0e1a;
  font-weight: 600;
}
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(0, 229, 160, 0.3); }
.btn-primary:active { transform: translateY(0); }

.btn-outline {
  background: transparent;
  color: var(--c-text-dim);
  border: 1px solid var(--c-border);
}
.btn-outline:hover { border-color: var(--c-primary); color: var(--c-primary); background: var(--c-primary-dim); }

.btn-ghost {
  background: transparent;
  color: var(--c-text-dim);
}
.btn-ghost:hover { color: var(--c-text); background: rgba(255,255,255,0.05); }

.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xs);
  background: transparent;
  color: var(--c-text-dim);
  border: 1px solid var(--c-border);
  cursor: pointer;
  transition: all var(--transition);
}
.btn-icon:hover { border-color: var(--c-primary); color: var(--c-primary); background: var(--c-primary-dim); }

.btn-danger {
  background: transparent;
  color: var(--c-danger);
  border: none;
  padding: 0.25rem;
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition);
}

/* ---------- Main Layout ---------- */
#app-main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 1.5rem;
}

#spec-panel { grid-column: 1 / -1; }
#controls-panel { grid-column: 1 / -1; }
#endpoints-panel { grid-column: 1; }
#log-panel { grid-column: 2; }

/* ---------- Panels ---------- */
.panel-card {
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.panel-card h2,
#spec-panel h2 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--c-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ---------- Spec Panel ---------- */
#spec-panel {
  background: var(--glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.panel-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.panel-header h2 { margin-bottom: 0; }

/* Tab bar */
.tab-bar {
  display: flex;
  gap: 0.25rem;
  flex: 1;
  overflow-x: auto;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  font-family: var(--font-sans);
  color: var(--c-text-dim);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.tab-btn:hover { background: rgba(255,255,255,0.05); color: var(--c-text); }
.tab-btn.active {
  background: var(--c-primary-dim);
  color: var(--c-primary);
  border-color: rgba(0, 229, 160, 0.3);
}
.tab-btn .tab-close {
  opacity: 0;
  transition: opacity var(--transition);
  cursor: pointer;
  background: none;
  border: none;
  color: inherit;
  padding: 0;
  font-size: 1rem;
  line-height: 1;
}
.tab-btn:hover .tab-close,
.tab-btn.active .tab-close { opacity: 0.7; }
.tab-btn .tab-close:hover { opacity: 1; color: var(--c-danger); }

/* Spec textarea */
.spec-input-wrapper { position: relative; }

.code-textarea {
  width: 100%;
  min-height: 200px;
  max-height: 400px;
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--c-text);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  resize: vertical;
  transition: border-color var(--transition);
}
.code-textarea::placeholder { color: var(--c-text-muted); }
.code-textarea:focus { border-color: var(--c-primary); outline: none; }

.spec-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.upload-label { cursor: pointer; }
.upload-label:focus-within { outline: 2px solid var(--c-primary); outline-offset: 2px; }

/* Validation message */
.validation-msg {
  margin-top: 0.75rem;
  padding: 0.6rem 0.75rem;
  font-size: 0.8125rem;
  border-radius: var(--radius-xs);
  display: none;
}
.validation-msg.success { display: block; background: rgba(0, 229, 160, 0.1); color: var(--c-primary); border: 1px solid rgba(0, 229, 160, 0.2); }
.validation-msg.error { display: block; background: rgba(244, 63, 94, 0.1); color: var(--c-danger); border: 1px solid rgba(244, 63, 94, 0.2); }
.validation-msg.warning { display: block; background: rgba(245, 158, 11, 0.1); color: var(--c-warning); border: 1px solid rgba(245, 158, 11, 0.2); }

/* ---------- Controls ---------- */
.control-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 0;
}
.control-row + .control-row { border-top: 1px solid var(--c-border); }

.control-label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--c-text);
}

.control-input-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.control-value {
  min-width: 52px;
  text-align: right;
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  color: var(--c-primary);
}

/* Range input */
input[type="range"] {
  -webkit-appearance: none;
  width: 140px;
  height: 4px;
  background: var(--c-border);
  border-radius: 2px;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--c-primary);
  cursor: pointer;
  transition: box-shadow var(--transition);
}
input[type="range"]::-webkit-slider-thumb:hover { box-shadow: 0 0 8px rgba(0, 229, 160, 0.5); }

/* Toggle */
.toggle-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.toggle-track {
  display: block;
  width: 40px;
  height: 22px;
  border-radius: 11px;
  background: var(--c-border);
  position: relative;
  transition: background var(--transition);
}
.toggle-thumb {
  display: block;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--c-text-dim);
  position: absolute;
  top: 3px;
  left: 3px;
  transition: all var(--transition);
}
.toggle-btn[aria-checked="true"] .toggle-track { background: var(--c-primary-dim); }
.toggle-btn[aria-checked="true"] .toggle-thumb { background: var(--c-primary); left: 21px; }

/* Select */
.select-input {
  padding: 0.35rem 0.6rem;
  font-size: 0.75rem;
  font-family: var(--font-sans);
  color: var(--c-text);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: border-color var(--transition);
}
.select-input:focus { border-color: var(--c-primary); outline: none; }
.select-input:disabled { opacity: 0.4; cursor: not-allowed; }

/* Status indicator */
.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}
.status-dot.online { background: var(--c-primary); box-shadow: 0 0 8px var(--c-primary); animation: pulse 2s infinite; }
.status-dot.offline { background: var(--c-text-muted); }

.status-text {
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  color: var(--c-text-dim);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ---------- Badge ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 0.4rem;
  font-size: 0.6875rem;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--c-primary);
  background: var(--c-primary-dim);
  border-radius: 11px;
}

/* ---------- Endpoints List ---------- */
.endpoints-list {
  max-height: 480px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.endpoint-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
}
.endpoint-item:hover {
  border-color: var(--c-primary);
  background: var(--c-surface-2);
  transform: translateX(2px);
}

.method-badge {
  padding: 0.15rem 0.45rem;
  font-size: 0.625rem;
  font-weight: 700;
  font-family: var(--font-mono);
  text-transform: uppercase;
  border-radius: 4px;
  min-width: 46px;
  text-align: center;
}
.method-get { background: rgba(6, 182, 212, 0.15); color: #06b6d4; }
.method-post { background: rgba(0, 229, 160, 0.15); color: #00e5a0; }
.method-put { background: rgba(245, 158, 11, 0.15); color: #f59e0b; }
.method-patch { background: rgba(129, 140, 248, 0.15); color: #818cf8; }
.method-delete { background: rgba(244, 63, 94, 0.15); color: #f43f5e; }
.method-head, .method-options { background: rgba(148, 163, 184, 0.15); color: #94a3b8; }

.endpoint-path {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--c-text);
  word-break: break-all;
}

.endpoint-status {
  font-size: 0.6875rem;
  color: var(--c-text-muted);
  font-family: var(--font-mono);
}

/* ---------- Log List ---------- */
.log-list {
  max-height: 480px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.log-item {
  padding: 0.75rem;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  animation: slideIn 300ms ease;
}

.log-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}

.log-time {
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  color: var(--c-text-muted);
}

.log-status {
  font-size: 0.6875rem;
  font-weight: 600;
  font-family: var(--font-mono);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
}
.log-status.ok { background: rgba(0, 229, 160, 0.15); color: var(--c-primary); }
.log-status.error { background: rgba(244, 63, 94, 0.15); color: var(--c-danger); }

.log-body {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-text-dim);
  max-height: 120px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
  padding: 0.5rem;
  background: rgba(0,0,0,0.2);
  border-radius: var(--radius-xs);
  margin-top: 0.35rem;
  display: none;
}
.log-item.expanded .log-body { display: block; }

@keyframes slideIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Empty State ---------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 2.5rem 1rem;
  color: var(--c-text-muted);
  font-size: 0.8125rem;
  text-align: center;
}

/* ---------- Toast ---------- */
#toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 1000;
}

.toast {
  padding: 0.75rem 1rem;
  font-size: 0.8125rem;
  border-radius: var(--radius-sm);
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  color: var(--c-text);
  box-shadow: var(--shadow);
  animation: toastIn 300ms ease;
  max-width: 360px;
}
.toast.success { border-color: rgba(0, 229, 160, 0.4); }
.toast.error { border-color: rgba(244, 63, 94, 0.4); }

@keyframes toastIn {
  from { opacity: 0; transform: translateY(12px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes toastOut {
  to { opacity: 0; transform: translateY(12px) scale(0.95); }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  #app-main {
    grid-template-columns: 1fr;
  }
  #endpoints-panel,
  #log-panel {
    grid-column: 1;
  }
}

@media (max-width: 600px) {
  .header-inner { padding: 0.5rem 1rem; }
  h1 { font-size: 1rem; }
  #app-main { padding: 1rem; gap: 1rem; }
  .spec-actions { flex-wrap: wrap; }
  .header-actions { flex-wrap: wrap; }
  .control-row { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  input[type="range"] { width: 100%; }
}