/* Google Cloud CDN Image Optimizer - Modern Design System */
:root {
  --gcp-blue: #1a73e8;
  --gcp-blue-hover: #1557b0;
  --gcp-blue-light: #e8f0fe;
  --gcp-green: #1e8e3e;
  --gcp-green-hover: #137333;
  --gcp-green-light: #e6f4ea;
  --gcp-yellow: #f9ab00;
  --gcp-yellow-light: #fef7e0;
  --gcp-red: #d93025;
  --gcp-red-light: #fce8e6;
  --gcp-gray-50: #f8f9fa;
  --gcp-gray-100: #f1f3f4;
  --gcp-gray-200: #e8eaed;
  --gcp-gray-300: #dadce0;
  --gcp-gray-400: #bdc1c6;
  --gcp-gray-500: #9aa0a6;
  --gcp-gray-600: #70757a;
  --gcp-gray-700: #5f6368;
  --gcp-gray-800: #3c4043;
  --gcp-gray-900: #202124;

  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #f1f3f4;
  --text-primary: #202124;
  --text-secondary: #5f6368;
  --text-muted: #80868b;
  --border-color: #dadce0;
  --border-light: #e8eaed;
  
  --shadow-sm: 0 1px 2px 0 rgba(60,64,67,0.1), 0 1px 3px 1px rgba(60,64,67,0.08);
  --shadow-md: 0 1px 3px 0 rgba(60,64,67,0.15), 0 4px 8px 3px rgba(60,64,67,0.1);
  --shadow-lg: 0 2px 6px 0 rgba(60,64,67,0.15), 0 8px 24px 6px rgba(60,64,67,0.12);
  
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 9999px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --bg-primary: #1e1f22;
  --bg-secondary: #131416;
  --bg-tertiary: #2b2d31;
  --text-primary: #f2f3f5;
  --text-secondary: #c4c7c5;
  --text-muted: #8e918f;
  --border-color: #3c4043;
  --border-light: #2d3135;
  --gcp-blue-light: #172b4d;
  --gcp-green-light: #0f381e;
  --gcp-yellow-light: #3e2f05;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.6);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Google Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.5;
  font-size: 14.5px;
  -webkit-font-smoothing: antialiased;
}

/* Header */
.header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.header-inner {
  max-width: 1360px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}

.brand-logo {
  height: 36px;
  width: auto;
  display: block;
}

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

.brand-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.2px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-badge {
  font-size: 11px;
  font-weight: 600;
  background: var(--gcp-blue-light);
  color: var(--gcp-blue);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.brand-subtitle {
  font-size: 12px;
  color: var(--text-secondary);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-icon {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.btn-icon:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--gcp-gray-400);
}

/* Main Container */
.container {
  max-width: 1360px;
  margin: 0 auto;
  padding: 24px 24px 60px;
}

/* Playground Card */
.playground-box {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  margin-bottom: 24px;
}

.playground-topbar {
  padding: 14px 20px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

.image-selector-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.selector-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
}

.chips-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.image-chip {
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.image-chip:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--gcp-gray-400);
}

.image-chip.active {
  background: var(--gcp-blue);
  color: #ffffff;
  border-color: var(--gcp-blue);
  box-shadow: 0 2px 6px rgba(26,115,232,0.3);
}

.view-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.segmented-group {
  display: flex;
  background: var(--bg-tertiary);
  padding: 3px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
}

.seg-btn {
  padding: 6px 12px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 12.5px;
  font-weight: 500;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.seg-btn:hover {
  color: var(--text-primary);
}

.seg-btn.active {
  background: var(--bg-primary);
  color: var(--gcp-blue);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Playground Grid */
.playground-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  min-height: 820px;
}

@media (max-width: 1024px) {
  .playground-grid {
    grid-template-columns: 1fr;
    min-height: auto;
  }
}

/* Controls Sidebar */
.controls-sidebar {
  background: var(--bg-primary);
  border-right: 1px solid var(--border-color);
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  overflow: visible;
  height: 100%;
}

.ctrl-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ctrl-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.ctrl-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.param-tag {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 11px;
  background: var(--gcp-blue-light);
  color: var(--gcp-blue);
  padding: 1px 6px;
  border-radius: 4px;
  font-weight: 700;
}

.ctrl-val {
  font-size: 13px;
  font-weight: 600;
  color: var(--gcp-blue);
}

/* Format Grid */
.format-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  background: var(--bg-tertiary);
  padding: 3px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
}

.fmt-btn {
  padding: 8px 4px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 12.5px;
  font-weight: 600;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.fmt-btn:hover {
  color: var(--text-primary);
}

.fmt-btn.active {
  background: var(--bg-primary);
  color: var(--gcp-blue);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Range input */
.range-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.range-input {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--gcp-gray-300);
  outline: none;
  -webkit-appearance: none;
  accent-color: var(--gcp-blue);
}

.range-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--gcp-blue);
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0,0,0,0.25);
  transition: transform 0.1s ease;
}

.range-input::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.range-presets {
  display: flex;
  justify-content: space-between;
  gap: 4px;
}

.preset-btn {
  background: none;
  border: 1px solid var(--border-color);
  padding: 2px 8px;
  border-radius: var(--radius-xs);
  font-size: 11px;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.preset-btn:hover {
  border-color: var(--gcp-blue);
  color: var(--gcp-blue);
  background: var(--gcp-blue-light);
}

/* Dimensions Input */
.dim-inputs {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 8px;
}

.dim-box {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.dim-box label {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
}

.dim-input {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 13.5px;
  outline: none;
  transition: var(--transition);
}

.dim-input:focus {
  border-color: var(--gcp-blue);
  box-shadow: 0 0 0 3px var(--gcp-blue-light);
}

.lock-btn {
  margin-top: 18px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: var(--radius-xs);
  width: 32px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.lock-btn.locked {
  background: var(--gcp-blue-light);
  color: var(--gcp-blue);
  border-color: var(--gcp-blue);
}

.dim-presets-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 4px;
}

/* Fit Segmented */
.fit-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 3px;
  background: var(--bg-tertiary);
  padding: 3px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
}

.fit-btn {
  padding: 6px 2px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 11.5px;
  font-weight: 500;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.fit-btn:hover {
  color: var(--text-primary);
}

.fit-btn.active {
  background: var(--bg-primary);
  color: var(--gcp-blue);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* 3x3 Gravity Matrix */
.gravity-matrix {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  background: var(--bg-tertiary);
  padding: 4px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
}

.grav-btn {
  aspect-ratio: 1.5;
  border: 1px solid transparent;
  background: var(--bg-primary);
  color: var(--text-secondary);
  border-radius: var(--radius-xs);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11.5px;
  font-weight: 500;
  transition: var(--transition);
}

.grav-btn:hover {
  background: var(--gcp-blue-light);
  color: var(--gcp-blue);
}

.grav-btn.active {
  background: var(--gcp-blue);
  color: #ffffff;
  font-weight: 700;
}

/* Device simulation */
.device-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  background: var(--bg-tertiary);
  padding: 3px;
  border-radius: var(--radius-sm);
}

.dev-btn {
  padding: 6px 4px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.dev-btn.active {
  background: var(--bg-primary);
  color: var(--gcp-blue);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Sidebar Actions */
.sidebar-actions {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--border-light);
  display: flex;
  gap: 8px;
}

.btn {
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid transparent;
  text-decoration: none;
}

.btn-outline {
  background: var(--bg-primary);
  border-color: var(--border-color);
  color: var(--text-secondary);
}

.btn-outline:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--gcp-gray-400);
}

/* Viewport Area */
.viewport-wrapper {
  background: #0f1115;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.canvas-area {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  min-height: 640px;
  position: relative;
  background-image: radial-gradient(rgba(255,255,255,0.08) 1px, transparent 0);
  background-size: 24px 24px;
}

/* Modern Comparison Slider */
.slider-stage {
  position: relative;
  width: 100%;
  max-width: 980px;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0,0,0,0.6);
  background: #000;
  user-select: none;
}

.slider-stage img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.layer-original {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.layer-processed {
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  overflow: hidden;
  z-index: 2;
  border-right: 2px solid #ffffff;
}

.layer-processed img {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}

.slider-scrubber {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 44px;
  margin-left: -22px;
  z-index: 10;
  cursor: ew-resize;
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: none;
}

.scrubber-button {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gcp-gray-900);
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.slider-scrubber:hover .scrubber-button,
.slider-scrubber.active .scrubber-button {
  transform: scale(1.15);
  background: var(--gcp-blue);
  color: #ffffff;
}

/* Floating Label Badges */
.floating-badge {
  position: absolute;
  bottom: 16px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: rgba(15, 17, 21, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
  font-size: 12px;
  line-height: 1.45;
  z-index: 5;
  pointer-events: none;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.badge-left {
  left: 16px;
}

.badge-right {
  right: 16px;
}

.badge-title {
  font-size: 13px;
  font-weight: 700;
  display: block;
  margin-bottom: 2px;
}

.badge-val {
  color: #8ab4f8;
  font-weight: 500;
}

/* Side by Side View */
.side-by-side-stage {
  display: none;
  width: 100%;
  max-width: 900px;
  gap: 16px;
}

.side-box {
  flex: 1;
  background: #000;
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  aspect-ratio: 4 / 3;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}

.side-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* Telemetry Bar */
.telemetry-row {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 16px 24px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 14px;
}

.stat-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.stat-icon-green {
  background: var(--gcp-green-light);
  color: var(--gcp-green);
}

.stat-icon-blue {
  background: var(--gcp-blue-light);
  color: var(--gcp-blue);
}

.stat-icon-yellow {
  background: var(--gcp-yellow-light);
  color: var(--gcp-yellow);
}

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

.stat-label {
  font-size: 11.5px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  font-weight: 700;
}

.stat-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.2px;
}

.text-savings {
  color: var(--gcp-green);
}

.text-hit {
  color: var(--gcp-green);
}

.text-miss {
  color: var(--gcp-yellow);
}

/* URL Header Bar (Above Images) */
.url-header-bar {
  padding: 12px 18px;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
}

.url-box {
  display: flex;
  align-items: center;
  gap: 8px;
}

.url-badge-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--gcp-blue);
  background: var(--gcp-blue-light);
  padding: 5px 8px;
  border-radius: var(--radius-xs);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.url-input-field {
  flex: 1;
  padding: 8px 12px;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 12.5px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--gcp-blue);
  outline: none;
  font-weight: 500;
  transition: var(--transition);
}

.url-input-field:focus {
  border-color: var(--gcp-blue);
  box-shadow: 0 0 0 2px var(--gcp-blue-light);
}

/* Footer *//* Footer */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 36px 24px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
}

.footer-inner {
  max-width: 1360px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.toast-msg {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--gcp-gray-900);
  color: #ffffff;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  box-shadow: 0 6px 18px rgba(0,0,0,0.3);
  z-index: 2000;
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  transform: translateY(16px);
  transition: var(--transition);
  pointer-events: none;
}

.toast-msg.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .header-inner {
    padding: 10px 16px;
  }
  .hero {
    padding: 20px 16px 14px;
  }
  .hero-title {
    font-size: 20px;
  }
  .container {
    padding: 16px 14px 40px;
  }
  .telemetry-row {
    grid-template-columns: 1fr 1fr;
  }
}