:root {
  color-scheme: dark;

  /* Colors from DESIGN.md */
  --color-primary: #00F0FF;
  --color-secondary: #000000;
  --color-tertiary: #0A45FF;
  --color-neutral: #000000;
  --color-background: #000000;
  --color-surface: #171717;
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #A3A3A3;
  --color-border: #262626;
  --color-accent: #00F0FF;

  /* Gradients from DESIGN.md */
  --grad-shell: linear-gradient(180deg, rgba(255, 255, 255, 0.15) 0%, rgba(0, 0, 0, 0) 100%);
  --grad-surface: linear-gradient(180deg, #525252 0%, #171717 100%);
  --grad-accent: linear-gradient(90deg, #f5f5f5 0%, #737373 100%);

  /* Typography from DESIGN.md */
  --font-family: "Inter", system-ui, -apple-system, sans-serif;
  
  --font-display-size: 72px;
  --font-display-weight: 500;
  --font-display-lh: 72px;
  --font-display-ls: -0.025em;

  --font-body-size: 14px;
  --font-body-weight: 400;
  --font-body-lh: 22.75px;

  --font-label-size: 12px;
  --font-label-weight: 500;
  --font-label-lh: 16px;

  /* Rounded / Radius from DESIGN.md */
  --rounded-md: 0px;
  --rounded-full: 9999px;
  --rounded-inner: 23px;
  --rounded-outer: 24px;

  /* Spacing from DESIGN.md */
  --space-base: 6px;
  --space-sm: 1px;
  --space-md: 6px;
  --space-lg: 8px;
  --space-xl: 12px;
  --space-gap: 8px;
  --space-card-padding: 32px;
  --space-section-padding: 32px;

  /* Scale from DESIGN.md */
  --space-1: 1px;
  --space-6: 6px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-24: 24px;
  --space-32: 32px;
  --space-40: 40px;
  --space-48: 48px;
  --space-72: 72px;
  --space-96: 96px;

  /* Depth from DESIGN.md */
  --border-glass: var(--space-1) solid var(--color-border);
  --border-white: var(--space-1) solid #FFFFFF;
  --blur-glass: 24px;

  /* Motion from DESIGN.md */
  --motion-fast: 150ms;
  --motion-base: 300ms;
  --motion-slow: 500ms;
  --motion-reveal: 700ms;
  --ease-standard: ease;
  --ease-snappy: cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: var(--space-32);
  background: var(--color-background);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: var(--font-body-size);
  font-weight: var(--font-body-weight);
  line-height: var(--font-body-lh);
  -webkit-font-smoothing: antialiased;
  position: relative;
  min-height: 100vh;
}

/* Premium Animated Glow Orb */
.glow-orb {
  position: fixed;
  top: 40%;
  left: 50%;
  width: 900px;
  height: 900px;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.12) 0%, rgba(10, 69, 255, 0.08) 30%, rgba(0,0,0,0) 70%);
  transform: translate(-50%, -50%);
  z-index: -1;
  pointer-events: none;
  border-radius: 50%;
  animation: pulse-orb 12s ease-in-out infinite alternate;
}

@keyframes pulse-orb {
  0% { transform: translate(-50%, -50%) scale(0.9); opacity: 0.7; }
  100% { transform: translate(-50%, -50%) scale(1.1); opacity: 1; }
}

[hidden] { display: none !important; }

/* Typography Classes */
.text-display {
  font-family: var(--font-family);
  font-size: var(--font-display-size);
  font-weight: var(--font-display-weight);
  line-height: var(--font-display-lh);
  letter-spacing: var(--font-display-ls);
  color: var(--color-text-primary);
  margin: 0;
}

.text-body {
  font-family: var(--font-family);
  font-size: var(--font-body-size);
  font-weight: var(--font-body-weight);
  line-height: var(--font-body-lh);
  color: var(--color-text-primary);
  margin: 0;
}

.text-label {
  font-family: var(--font-family);
  font-size: var(--font-label-size);
  font-weight: var(--font-label-weight);
  line-height: var(--font-label-lh);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0;
}

.text-accent {
  background: linear-gradient(90deg, var(--color-primary), var(--color-tertiary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  animation: text-shimmer 4s linear infinite;
  background-size: 200% auto;
}

@keyframes text-shimmer {
  0% { background-position: 0% center; }
  100% { background-position: 200% center; }
}

/* Layout: Grid, Full Bleed */
.grid-container {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-24);
  width: 100%;
}

.col-12 { grid-column: span 12; }
.col-8 { grid-column: span 8; }
.col-4 { grid-column: span 4; }

/* Glass Surfaces with Animated Gradient Shell */
.shell-wrapper {
  padding: var(--space-1);
  border-radius: var(--rounded-outer);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(0, 0, 0, 0), rgba(255, 255, 255, 0.05));
  background-size: 200% 200%;
  animation: shell-shimmer 6s ease infinite;
}

@keyframes shell-shimmer {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.glass-surface {
  background: rgba(20, 20, 20, 0.85); /* Premium dark transparency */
  border-radius: var(--rounded-inner);
  border: var(--border-glass);
  backdrop-filter: blur(var(--blur-glass));
  -webkit-backdrop-filter: blur(var(--blur-glass));
  padding: var(--space-card-padding);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.glass-surface.no-pad { padding: 0; }
.glass-surface.small-pad { padding: var(--space-16) var(--space-24); }

/* Controls */
input, select, textarea {
  font-family: var(--font-family);
  font-size: var(--font-body-size);
  background: rgba(0,0,0,0.5);
  color: var(--color-text-primary);
  border: var(--border-glass);
  padding: var(--space-12) var(--space-16);
  border-radius: var(--rounded-md);
  outline: none;
  transition: all var(--motion-fast) var(--ease-standard);
  width: 100%;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
  background: rgba(0,0,0,0.8);
}

/* Premium Animated Buttons */
.btn-primary {
  position: relative;
  overflow: hidden;
  background-color: var(--color-secondary);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: var(--font-label-size);
  font-weight: var(--font-label-weight);
  line-height: var(--font-label-lh);
  border-radius: var(--rounded-full);
  padding: var(--space-6) var(--space-24);
  border: var(--space-1) solid rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: all var(--motion-fast) var(--ease-snappy);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  height: 40px;
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.1);
}

.btn-primary::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -150%;
  width: 200%;
  height: 200%;
  background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: rotate(35deg);
  transition: left 0.6s var(--ease-snappy);
}

.btn-primary:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
}

.btn-primary:hover::after {
  left: 150%;
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

/* Link Button */
.btn-link {
  color: var(--color-text-secondary);
  border-radius: var(--rounded-md);
  padding: 0px;
  border: 0px solid rgb(229, 231, 235);
  background: transparent;
  cursor: pointer;
  transition: all var(--motion-fast) var(--ease-standard);
  font-family: var(--font-family);
  font-size: var(--font-label-size);
  font-weight: var(--font-label-weight);
  text-decoration: none;
  position: relative;
}

.btn-link::after {
  content: '';
  position: absolute;
  width: 100%;
  transform: scaleX(0);
  height: 1px;
  bottom: 0;
  left: 0;
  background-color: var(--color-primary);
  transform-origin: bottom right;
  transition: transform 0.25s ease-out;
}

.btn-link:hover { color: var(--color-primary); }
.btn-link:hover::after {
  transform: scaleX(1);
  transform-origin: bottom left;
}

/* Specific Blocks */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-24);
}

.search-form {
  display: flex;
  gap: var(--space-12);
  flex: 1;
  max-width: 800px;
}

.search-form select { width: 200px; }

.status-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-16);
}

.status-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.status-value {
  font-size: var(--space-24);
  font-weight: 500;
  color: var(--color-primary);
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
}

/* Highly Interactive Product Cards */
.product-card {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: var(--space-24);
  align-items: center;
  border-bottom: var(--border-glass);
  padding: var(--space-16) 0;
  transition: all var(--motion-base) var(--ease-snappy);
  position: relative;
  z-index: 1;
}

.product-card:last-child { border-bottom: none; }

.product-card:hover {
  transform: translateY(-4px) scale(1.02);
  background: rgba(255, 255, 255, 0.03);
  padding: var(--space-16);
  border-bottom-color: transparent;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6);
  border-radius: var(--space-8);
  z-index: 2;
}

.product-media {
  width: 80px;
  height: 80px;
  border: var(--border-glass);
  border-radius: var(--space-8);
  display: grid;
  place-items: center;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.5);
  transition: all var(--motion-base) var(--ease-snappy);
}

.product-card:hover .product-media {
  border-color: var(--color-primary);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.2);
}

.product-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform var(--motion-base) var(--ease-snappy);
}

.product-card:hover .product-media img {
  transform: scale(1.15);
}

.product-title {
  font-size: var(--font-body-size);
  font-weight: var(--font-body-weight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-8);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-price {
  font-size: var(--space-24);
  color: var(--color-primary);
  font-weight: 500;
  text-align: right;
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.product-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
  align-items: flex-end;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-8);
  border: var(--border-glass);
  border-radius: var(--rounded-full);
  font-size: var(--font-label-size);
  color: var(--color-text-secondary);
  background: rgba(0,0,0,0.5);
  transition: all var(--motion-fast) ease;
}

.pill.active {
  color: #000;
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
  font-weight: bold;
}

.pill.error {
  color: #ff6b6b;
  border-color: rgba(255, 107, 107, 0.4);
}

.store-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  margin-bottom: var(--space-24);
}

.store-filters label {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-6);
  font-size: var(--font-label-size);
  color: var(--color-text-secondary);
  padding: 4px 8px;
  border-radius: var(--rounded-md);
  transition: all var(--motion-fast) ease;
}

.store-filters label:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-primary);
}

.chart-container {
  height: 300px;
  margin-top: var(--space-24);
}

.message-box {
  border-left: 3px solid var(--color-primary);
  padding: var(--space-12) var(--space-16);
  background: linear-gradient(90deg, rgba(0, 240, 255, 0.1) 0%, rgba(0,0,0,0) 100%);
  margin-top: var(--space-24);
  border-radius: 0 8px 8px 0;
  animation: pulse-message 2s infinite alternate;
}

@keyframes pulse-message {
  from { border-left-color: var(--color-primary); }
  to { border-left-color: var(--color-tertiary); }
}

textarea.analysis-input {
  min-height: 80px;
  resize: vertical;
  margin-bottom: var(--space-12);
}

.analysis-output {
  margin-top: var(--space-16);
  color: var(--color-text-primary);
  line-height: 1.6;
  white-space: pre-wrap;
  text-shadow: 0 0 2px rgba(255, 255, 255, 0.2);
}

@media (max-width: 1024px) {
  .col-8, .col-4 { grid-column: span 12; }
  .status-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .search-form { flex-direction: column; }
  .search-form select { width: 100%; }
  .product-card { grid-template-columns: 1fr; text-align: center; }
  .product-card:hover { transform: translateY(-2px) scale(1.01); }
  .product-actions { align-items: center; }
  .product-price { text-align: center; }
  .product-media { margin: 0 auto; }
  .topbar { flex-direction: column; align-items: flex-start; }
}

/* --- Premium Splash Screen --- */
.splash-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: var(--color-background);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  overflow: hidden;
}

.splash-screen::before {
  content: "";
  position: absolute;
  width: 150vw;
  height: 150vh;
  background: radial-gradient(circle at center, rgba(0, 240, 255, 0.1) 0%, rgba(10, 69, 255, 0.05) 30%, rgba(0,0,0,0) 60%);
  animation: splash-rotate 15s linear infinite;
  z-index: -1;
}

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

.scraping-stream {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  z-index: 0;
  font-family: monospace;
  font-size: 12px;
  color: rgba(0, 240, 255, 0.4);
  line-height: 1.5;
  pointer-events: none;
}

.stream-line {
  white-space: nowrap;
  animation: slide-up linear infinite;
  position: absolute;
  bottom: -20px;
}

@keyframes slide-up {
  to { transform: translateY(-120vh); }
}

.scanner-line {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  box-shadow: 0 0 15px var(--color-primary), 0 0 30px var(--color-primary);
  z-index: 1;
  opacity: 0.6;
  animation: scan-down 4s cubic-bezier(0.4, 0, 0.2, 1) infinite alternate;
  pointer-events: none;
}

@keyframes scan-down {
  0% { transform: translateY(0); }
  100% { transform: translateY(100vh); }
}

.splash-content {
  text-align: center;
  max-width: 600px;
  padding: var(--space-48);
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 2;
  background: rgba(10, 10, 10, 0.6);
  border: var(--border-glass);
  border-radius: var(--rounded-outer);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8), inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}

.splash-logo {
  opacity: 0;
  transform: translateY(30px);
}

.splash-desc {
  opacity: 0;
  transform: translateY(20px);
}

.splash-btn {
  font-size: 16px;
  padding: 12px 32px;
  height: auto;
  opacity: 0;
  transform: translateY(20px);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
}