/* ==========================================================================
   İnteraktif Proje Çalıştırma Laboratuvarı (Playground) Stilleri
   ========================================================================== */

.playground-section {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
}

.playground-wrapper {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

/* Tab Bar */
.playground-tabs {
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.5rem 0.75rem 0;
  gap: 0.5rem;
}

.playground-tabs::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  border: 1px solid transparent;
  border-bottom: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
}

.tab-btn.active {
  color: var(--accent-cyan);
  background: var(--bg-card);
  border-color: var(--border-subtle);
  border-top: 2px solid var(--accent-cyan);
}

.tab-badge {
  font-size: 0.7rem;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-full);
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-cyan);
}

/* Tab Panes */
.playground-content {
  padding: 2rem;
  min-height: 480px;
}

.tab-pane {
  display: none;
  animation: fadeIn 0.3s ease;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Common Interactive Frame Header */
.interactive-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.interactive-title {
  font-size: 1.35rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.interactive-meta {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.interactive-meta .source-repo {
  color: var(--accent-cyan);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

/* ==========================================================================
   1. FastAPI JWT Auth Sandbox
   ========================================================================== */

.jwt-sandbox-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 2rem;
}

.api-client-panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.api-endpoint-selector {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.url-bar-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.6rem;
}

.http-method {
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-family: var(--font-mono);
}

.method-post { background: rgba(56, 189, 248, 0.2); color: var(--accent-cyan); }
.method-get { background: rgba(16, 185, 129, 0.2); color: var(--accent-emerald); }

.endpoint-input {
  flex-grow: 1;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-primary);
}

.api-payload-box {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.payload-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.payload-textarea {
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.825rem;
  color: var(--accent-cyan);
  min-height: 110px;
  resize: vertical;
}

.btn-send-request {
  background: var(--grad-primary);
  color: #fff;
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-send-request:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(99, 102, 241, 0.45);
}

/* Quick Action Buttons */
.quick-endpoints {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.btn-endpoint-preset {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  padding: 0.25rem 0.55rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.btn-endpoint-preset:hover, .btn-endpoint-preset.active {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

/* Response and Token Inspector Panel */
.api-response-panel {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.terminal-box {
  background: #090d16;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.terminal-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  background: #0f1624;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.terminal-dots {
  display: flex;
  gap: 0.35rem;
}

.term-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.term-red { background: #ef4444; }
.term-yellow { background: #f59e0b; }
.term-green { background: #10b981; }

.terminal-title {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.terminal-body {
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  max-height: 230px;
  overflow-y: auto;
  line-height: 1.5;
}

/* JWT Token Structure Inspector */
.jwt-inspector-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.jwt-inspector-title {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.jwt-visualizer-parts {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.jwt-part {
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.785rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.jwt-part-header {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
}

.jwt-part-payload {
  background: rgba(168, 85, 247, 0.1);
  border: 1px solid rgba(168, 85, 247, 0.3);
  color: #c084fc;
}

.jwt-part-signature {
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: #38bdf8;
}

.part-tag {
  font-size: 0.65rem;
  text-transform: uppercase;
  font-weight: 800;
  letter-spacing: 0.05em;
  opacity: 0.8;
}

/* ==========================================================================
   2. Live Weather Station (Weather App)
   ========================================================================== */

.weather-container {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 2rem;
}

.weather-search-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.weather-search-box {
  display: flex;
  gap: 0.5rem;
}

.weather-input {
  flex-grow: 1;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.8rem;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.weather-input:focus {
  border-color: var(--accent-cyan);
}

.city-quick-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.city-pill {
  padding: 0.3rem 0.7rem;
  font-size: 0.8rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.city-pill:hover, .city-pill.active {
  color: var(--accent-cyan);
  border-color: var(--border-focus);
}

/* Weather Display Canvas / Card */
.weather-display-card {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.9) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.weather-display-card::after {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.25) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.weather-main-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.city-title-group {
  display: flex;
  flex-direction: column;
}

.weather-city-name {
  font-size: 2rem;
  font-weight: 800;
}

.weather-condition-desc {
  font-size: 1.1rem;
  color: var(--accent-cyan);
  font-weight: 600;
}

.weather-temp-badge {
  font-size: 4rem;
  font-weight: 900;
  font-family: var(--font-mono);
  line-height: 1;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.weather-metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding: 1.25rem;
  background: rgba(0, 0, 0, 0.25);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.metric-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.metric-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.metric-val {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-mono);
}

/* ==========================================================================
   3. QR Code Studio (QR App)
   ========================================================================== */

.qr-studio-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 2.5rem;
  align-items: center;
}

.qr-controls-panel {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.qr-preview-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.qr-canvas-frame {
  padding: 16px;
  background: #ffffff;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

#qrCanvas {
  display: block;
}

.color-options-row {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.color-swatch-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid transparent;
  transition: transform var(--transition-fast);
}

.color-swatch-btn:hover, .color-swatch-btn.active {
  transform: scale(1.15);
  border-color: #fff;
}

/* ==========================================================================
   4. C Algorithms & Data Structures Visualizer
   ========================================================================== */

.algorithms-layout {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.algo-controls-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

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

.algo-select {
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.8rem;
  color: var(--text-primary);
  font-weight: 600;
}

.algo-action-btns {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-algo-action {
  padding: 0.5rem 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.btn-algo-action:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.btn-algo-action.primary {
  background: var(--grad-primary);
  color: #fff;
  border: none;
}

/* Array Bars Container */
.array-bars-container {
  height: 260px;
  background: #090d16;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem 1rem 0.5rem;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 8px;
}

.array-bar {
  width: 24px;
  background: var(--accent-cyan);
  border-radius: 4px 4px 0 0;
  transition: height 0.15s ease, background-color 0.15s ease;
  position: relative;
  display: flex;
  justify-content: center;
}

.bar-val-label {
  position: absolute;
  top: -20px;
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.array-bar.comparing {
  background: var(--accent-amber);
}

.array-bar.swapping {
  background: var(--accent-rose);
}

.array-bar.sorted {
  background: var(--accent-emerald);
}

.algo-status-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* ==========================================================================
   5. Unit Converter
   ========================================================================== */

.converter-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

.converter-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.convert-group {
  display: flex;
  gap: 0.75rem;
}

.convert-input {
  flex-grow: 1;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  font-size: 1.25rem;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-cyan);
}

.unit-select {
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  color: var(--text-primary);
  font-weight: 600;
}

/* Responsive */
@media (max-width: 900px) {
  .jwt-sandbox-grid, .weather-container, .qr-studio-grid, .converter-grid {
    grid-template-columns: 1fr;
  }
}