:root {
  --clr-bg:         #0a0e1a;
  --clr-surface:    rgba(15, 23, 42, 0.65);
  --clr-surface-2:  rgba(30, 41, 59, 0.55);
  --clr-border:     rgba(99, 102, 241, 0.18);
  --clr-border-2:   rgba(6, 182, 212, 0.15);
  --clr-text:       #e2e8f0;
  --clr-text-muted: #94a3b8;
  --clr-text-dim:   #64748b;

  --grad-primary:   linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
  --grad-tonnage:   linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --grad-cargo-vc:  linear-gradient(135deg, #06b6d4 0%, #22d3ee 100%);
  --grad-cargo-tc:  linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
  --grad-unclassified: linear-gradient(135deg, #94a3b8 0%, #cbd5e1 100%);
  --grad-success:   linear-gradient(135deg, #10b981 0%, #34d399 100%);

  --clr-indigo:     #6366f1;
  --clr-cyan:       #06b6d4;
  --clr-amber:      #f59e0b;
  --clr-emerald:    #10b981;
  --clr-rose:       #f43f5e;

  --glass-blur:     16px;
  --glass-bg:       rgba(15, 23, 42, 0.55);
  --glass-border:   1px solid rgba(99, 102, 241, 0.12);

  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  16px;
  --radius-xl:  20px;

  --shadow-sm:  0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md:  0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg:  0 8px 40px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(99, 102, 241, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
  animation: float 20s ease-in-out infinite;
}

.bg-glow--1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.25) 0%, transparent 70%);
  top: -10%;
  left: -5%;
  animation-delay: 0s;
}

.bg-glow--2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.2) 0%, transparent 70%);
  bottom: 10%;
  right: -5%;
  animation-delay: -7s;
}

.bg-glow--3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.12) 0%, transparent 70%);
  top: 50%;
  left: 40%;
  animation-delay: -14s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -40px) scale(1.05); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(15px, 30px) scale(1.02); }
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-xl);
  background: rgba(10, 14, 26, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header__icon {
  filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.4));
}

.header__title {
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.header__status {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.8rem;
  color: var(--clr-text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.status-dot--connecting {
  background: var(--clr-amber);
  animation: pulse 1.5s ease-in-out infinite;
}

.status-dot--online {
  background: var(--clr-emerald);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.5);
}

.status-dot--offline {
  background: var(--clr-rose);
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.main {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
}

.hero {
  text-align: center;
  padding: var(--space-2xl) 0 var(--space-xl);
  animation: fadeUp 0.6s var(--ease-out);
}

.hero__title {
  font-size: clamp(1.8rem, 5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--space-md);
}

.gradient-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 1.05rem;
  color: var(--clr-text-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: box-shadow var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out);
}

.glass-card:hover {
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: rgba(99, 102, 241, 0.22);
}

.input-card {
  animation: fadeUp 0.7s var(--ease-out);
}

.input-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--clr-border);
}

.input-card__label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--clr-text);
}

.input-card__actions {
  display: flex;
  gap: var(--space-sm);
}

.input-card__textarea {
  width: 100%;
  padding: var(--space-lg);
  background: transparent;
  border: none;
  color: var(--clr-text);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.7;
  resize: vertical;
  min-height: 200px;
  outline: none;
}

.input-card__textarea::placeholder {
  color: var(--clr-text-dim);
}

.input-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--clr-border);
}

.input-card__count {
  font-size: 0.78rem;
  color: var(--clr-text-dim);
  font-family: var(--font-mono);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px 20px;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
  user-select: none;
}

.btn--primary {
  background: var(--grad-primary);
  color: white;
  box-shadow: 0 2px 12px rgba(99, 102, 241, 0.35);
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.5);
}

.btn--primary:active {
  transform: translateY(0);
}

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

.btn--ghost {
  background: transparent;
  color: var(--clr-text-muted);
  border: 1px solid var(--clr-border);
}

.btn--ghost:hover {
  background: rgba(99, 102, 241, 0.08);
  color: var(--clr-text);
  border-color: rgba(99, 102, 241, 0.25);
}

.btn--sm {
  padding: 6px 12px;
  font-size: 0.8rem;
}

.loading-overlay {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-3xl) 0;
  animation: fadeUp 0.3s var(--ease-out);
}

.loading-overlay[hidden] {
  display: none;
}

.loading-spinner {
  position: relative;
  width: 56px;
  height: 56px;
}

.spinner-ring {
  position: absolute;
  inset: 0;
  border: 3px solid transparent;
  border-top-color: var(--clr-indigo);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.spinner-ring--2 {
  inset: 6px;
  border-top-color: var(--clr-cyan);
  animation-direction: reverse;
  animation-duration: 0.7s;
}

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

.loading-text {
  font-size: 0.95rem;
  color: var(--clr-text-muted);
  animation: pulse 1.5s ease-in-out infinite;
}

.results-section {
  margin-top: var(--space-xl);
  animation: fadeUp 0.5s var(--ease-out);
}

.results-section[hidden] {
  display: none;
}

.result-header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  animation: fadeUp 0.4s var(--ease-out);
}

.category-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px 18px;
  border-radius: 100px;
  font-size: 0.88rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: white;
  box-shadow: var(--shadow-sm);
}

.category-badge--tonnage {
  background: var(--grad-tonnage);
}

.category-badge--cargo_vc {
  background: var(--grad-cargo-vc);
}

.category-badge--cargo_tc {
  background: var(--grad-cargo-tc);
}

.category-badge--unclassified {
  background: var(--grad-unclassified);
  color: #1e293b;
}

.category-badge__icon {
  font-size: 1.1rem;
}

.confidence-meter {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.82rem;
}

.confidence-meter__label {
  color: var(--clr-text-dim);
  font-weight: 500;
}

.confidence-meter__bar {
  width: 100px;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 100px;
  overflow: hidden;
}

.confidence-meter__fill {
  height: 100%;
  border-radius: 100px;
  background: var(--grad-success);
  transition: width 0.8s var(--ease-out);
  width: 0%;
}

.confidence-meter__value {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--clr-emerald);
  min-width: 3.5ch;
}

.meta-chips {
  display: flex;
  gap: var(--space-sm);
  margin-left: auto;
}

.meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--clr-text-muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--clr-border);
  border-radius: 100px;
}

.records-card {
  margin-bottom: var(--space-lg);
}

.records-card__header {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--clr-border);
}

.records-card__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--clr-text);
}

.records-card__body {
  padding: var(--space-md);
}

.record-block {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-md);
  transition: border-color var(--duration-fast);
  animation: fadeUp 0.4s var(--ease-out);
}

.record-block:last-child {
  margin-bottom: 0;
}

.record-block:hover {
  border-color: rgba(99, 102, 241, 0.3);
}

.record-block__index {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-indigo);
  margin-bottom: var(--space-sm);
}

.record-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-sm) var(--space-lg);
}

.record-field {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.record-field__key {
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--clr-text-dim);
}

.record-field__val {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--clr-text);
  font-family: var(--font-mono);
  word-break: break-word;
}

.record-field__val--empty {
  color: var(--clr-text-dim);
  font-style: italic;
}

.json-card {
  margin-top: var(--space-md);
}

.json-card__summary {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: color var(--duration-fast);
}

.json-card__summary::-webkit-details-marker {
  display: none;
}

.json-card__summary:hover {
  color: var(--clr-text);
}

.json-card__content-wrapper {
  position: relative;
}

.json-card__download {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.json-card__download:hover {
  background: rgba(255, 255, 255, 0.1);
}

.json-card__pre {
  padding: var(--space-lg);
  margin: 0;
  background: rgba(0, 0, 0, 0.25);
  border-top: 1px solid var(--clr-border);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--clr-text-muted);
}

.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--space-2xl) var(--space-lg) var(--space-xl);
  font-size: 0.78rem;
  color: var(--clr-text-dim);
  border-top: 1px solid var(--clr-border);
  margin-top: var(--space-3xl);
}

@media (max-width: 640px) {
  .main {
    padding: var(--space-md);
  }

  .header {
    padding: var(--space-sm) var(--space-md);
  }

  .input-card__header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }

  .result-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .meta-chips {
    margin-left: 0;
  }

  .record-grid {
    grid-template-columns: 1fr;
  }

  .confidence-meter__bar {
    width: 80px;
  }
}