/* ========================================
   DATABENTO APAC OPPORTUNITY BRIEF
   Brand-matched styles
   ======================================== */

/* Custom Properties — Databento Brand */
:root {
  --db-violet: #0b083a;
  --db-violet-90: rgba(11, 8, 58, 0.9);
  --db-blue: #6165f0;
  --db-blue-light: #7b7ff5;
  --db-red: #f35343;
  --db-purple-bg: #ebe8fb;
  --db-purple-subtle: #f5f3fd;
  --db-white: #ffffff;
  --db-gray-50: #f9fafb;
  --db-gray-100: #f3f4f6;
  --db-gray-200: #e5e7eb;
  --db-gray-300: #d1d5db;
  --db-gray-500: #6b7280;
  --db-gray-600: #4b5563;
  --db-gray-700: #374151;
  --db-gray-800: #1f2937;
  --db-gray-900: #111827;

  --font-heading: 'Nunito Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;

  --max-width: 780px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;
  --spacing-2xl: 6rem;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--db-gray-800);
  background: var(--db-white);
  line-height: 1.7;
  font-size: 1.05rem;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--db-violet);
}

h1 { font-size: 2.25rem; letter-spacing: -0.02em; }
h2 { font-size: 1.5rem; margin-bottom: var(--spacing-md); letter-spacing: -0.01em; }
h3 { font-size: 1.15rem; margin-bottom: var(--spacing-sm); color: var(--db-gray-800); }
h4 { font-size: 1rem; color: var(--db-gray-700); }

p { margin-bottom: var(--spacing-md); }

a {
  color: var(--db-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
a:hover { border-bottom-color: var(--db-blue); }

strong { font-weight: 600; color: var(--db-gray-900); }

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Top Bar */
.top-bar {
  background: var(--db-violet);
  padding: 0.75rem 0;
  text-align: center;
}

.top-bar__label {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--db-purple-bg);
  opacity: 0.85;
}

/* Hero */
.hero {
  background: var(--db-violet);
  padding: var(--spacing-2xl) 0 var(--spacing-xl);
  text-align: center;
}

.hero h1 {
  color: var(--db-white);
  margin-bottom: var(--spacing-sm);
  font-size: 2.5rem;
}

.hero__subtitle {
  color: var(--db-purple-bg);
  font-size: 1.1rem;
  font-weight: 400;
  opacity: 0.85;
  margin-bottom: var(--spacing-md);
}

.hero__author-link {
  color: var(--db-blue-light);
  border-bottom: 1px solid rgba(123, 127, 245, 0.4);
  transition: all 0.2s ease;
}
.hero__author-link:hover {
  color: var(--db-white);
  border-bottom-color: var(--db-white);
}

.hero__date {
  color: var(--db-blue-light);
  font-size: 0.85rem;
  font-family: var(--font-mono);
  opacity: 0.7;
}

/* Sections */
.section { padding: var(--spacing-xl) 0; }
.section--alt { background: var(--db-gray-50); }
.section--purple { background: var(--db-purple-subtle); }

.section__label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--db-blue);
  margin-bottom: var(--spacing-sm);
}

.section__divider {
  width: 40px;
  height: 3px;
  background: var(--db-blue);
  border: none;
  margin-bottom: var(--spacing-lg);
  border-radius: 2px;
}

/* Key Stats Row */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

.stat-card {
  background: var(--db-white);
  border: 1px solid var(--db-gray-200);
  border-radius: 8px;
  padding: var(--spacing-md);
  text-align: center;
}

.stat-card__number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--db-blue);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.stat-card__label {
  font-size: 0.8rem;
  color: var(--db-gray-500);
  line-height: 1.3;
}

/* Coverage Grid */
.coverage-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--db-gray-200);
  border: 1px solid var(--db-gray-200);
  border-radius: 8px;
  overflow: hidden;
  margin: var(--spacing-lg) 0;
}

.coverage-country {
  background: var(--db-white);
  padding: var(--spacing-md);
}

.coverage-country__name {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--db-gray-500);
  margin-bottom: 0.5rem;
}

.coverage-country__exchanges { list-style: none; }

.coverage-country__exchanges li {
  font-size: 0.9rem;
  color: var(--db-gray-800);
  padding: 0.2rem 0;
  line-height: 1.4;
}

.coverage-country__exchanges li .venue-code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--db-blue);
  background: var(--db-purple-subtle);
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
  margin-left: 0.35rem;
}

/* Coverage Legend */
.coverage-legend {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--db-purple-subtle);
  border-radius: 6px;
  font-size: 0.82rem;
  color: var(--db-gray-600);
}

.coverage-legend span {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

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

.legend-dot--active { background: var(--db-blue); }
.legend-dot--roadmap { background: var(--db-gray-300); }

/* Callout Box */
.callout {
  background: var(--db-purple-subtle);
  border-left: 3px solid var(--db-blue);
  padding: var(--spacing-md);
  border-radius: 0 6px 6px 0;
  margin: var(--spacing-md) 0;
  font-size: 0.95rem;
  color: var(--db-gray-700);
}
.callout strong { color: var(--db-violet); }

/* Inline Highlight */
.highlight {
  color: var(--db-red);
  font-weight: 600;
}


/* ========================================
   TAB NAVIGATION
   ======================================== */

.tabs {
  display: flex;
  gap: 0;
  margin-bottom: 0;
  border-bottom: 2px solid var(--db-gray-200);
}

.tab {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: var(--spacing-sm) var(--spacing-md);
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  font-family: var(--font-body);
  text-align: left;
  color: var(--db-gray-500);
  transition: all 0.2s ease;
}

.tab:hover {
  color: var(--db-gray-800);
  background: rgba(97, 101, 240, 0.04);
}

.tab--active {
  color: var(--db-violet);
  border-bottom-color: var(--db-blue);
}

.tab__icon { font-size: 1.3rem; line-height: 1; }

.tab__label {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1.3;
}

.tab__sublabel {
  font-weight: 400;
  font-size: 0.75rem;
  color: var(--db-gray-500);
}
.tab--active .tab__sublabel { color: var(--db-blue); }

/* Tab Panels */
.tab-panel {
  display: none;
  padding-top: var(--spacing-lg);
}
.tab-panel--active { display: block; }


/* ========================================
   DEMO SHARED STYLES
   ======================================== */

.demo-intro {
  font-size: 0.95rem;
  color: var(--db-gray-600);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.demo-box {
  background: var(--db-white);
  border: 1px solid var(--db-gray-200);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.02);
}

.demo-box__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem var(--spacing-md);
  border-bottom: 1px solid var(--db-gray-200);
  background: var(--db-gray-50);
}

.demo-box__title {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--db-violet);
}

.demo-box__badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--db-blue);
  background: var(--db-purple-subtle);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

.demo-box__footer {
  padding: 0.6rem var(--spacing-md);
  font-size: 0.72rem;
  color: var(--db-gray-500);
  border-top: 1px solid var(--db-gray-100);
  background: var(--db-gray-50);
  font-family: var(--font-body);
}


/* ========================================
   TAB 1: COST CALCULATOR
   ======================================== */

.calc-layout {
  padding: var(--spacing-md);
}

.calc-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.calc-control {
  display: flex;
  flex-direction: column;
}

.calc-control__top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.5rem;
}

.calc-control__label {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--db-gray-700);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.calc-control__value {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--db-red);
  line-height: 1;
}

.calc-control__value--blue {
  color: var(--db-blue);
}

.calc-control__ticks {
  display: flex;
  justify-content: space-between;
  font-size: 0.65rem;
  color: var(--db-gray-400, #9ca3af);
  font-family: var(--font-mono);
  margin-top: 0.25rem;
  padding: 0 2px;
}

/* Range Slider — Custom */
.calc-range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--db-gray-200);
  outline: none;
  cursor: pointer;
}

.calc-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 3px solid var(--db-white);
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
  transition: transform 0.15s ease;
}

.calc-range::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.calc-range--red::-webkit-slider-thumb {
  background: var(--db-red);
}

.calc-range--blue::-webkit-slider-thumb {
  background: var(--db-blue);
}

/* Firefox */
.calc-range::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 3px solid var(--db-white);
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

.calc-range--red::-moz-range-thumb { background: var(--db-red); }
.calc-range--blue::-moz-range-thumb { background: var(--db-blue); }

/* Results Area */
.calc-results {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--spacing-md);
  align-items: start;
}

.calc-bar-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.calc-bar__meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.35rem;
}

.calc-bar__label {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--db-gray-600);
}

.calc-bar__cost {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--db-red);
}

.calc-bar__cost--blue {
  color: var(--db-blue);
}

.calc-bar__per {
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--db-gray-500);
  margin-left: 0.1rem;
}

.calc-bar__track {
  height: 28px;
  background: var(--db-gray-100);
  border-radius: 6px;
  overflow: hidden;
  position: relative;
}

.calc-bar__fill {
  height: 100%;
  border-radius: 6px;
  transition: width 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  min-width: 4px;
}

.calc-bar__fill--bb {
  background: linear-gradient(90deg, var(--db-red), #ff6b5a);
}

.calc-bar__fill--db {
  background: linear-gradient(90deg, var(--db-blue), var(--db-blue-light));
}

.calc-bar__detail {
  font-size: 0.7rem;
  color: var(--db-gray-500);
  font-family: var(--font-mono);
  margin-top: 0.25rem;
  display: block;
}

/* Savings Box */
.calc-savings {
  text-align: center;
  padding: var(--spacing-md);
  background: var(--db-gray-50);
  border: 1px solid var(--db-gray-200);
  border-radius: 10px;
  min-width: 140px;
  transition: all 0.3s ease;
}

.calc-savings--positive {
  background: var(--db-purple-subtle);
  border-color: rgba(97, 101, 240, 0.2);
}

.calc-savings--neutral {
  background: #fff5f5;
  border-color: rgba(243, 83, 67, 0.15);
}

.calc-savings__number {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--db-blue);
  line-height: 1;
  margin-bottom: 0.2rem;
}

.calc-savings--neutral .calc-savings__number {
  color: var(--db-red);
}

.calc-savings__label {
  font-family: var(--font-heading);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--db-gray-500);
  margin-bottom: 0.3rem;
}

.calc-savings__amount {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--db-gray-700);
}


/* ========================================
   TAB 2: SCHEMA UNIFIER
   ======================================== */

.schema-demo {
  padding: var(--spacing-md);
}

.vendor-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  transition: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.vendor-card {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--db-gray-200);
  transition: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.vendor-card__header {
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.5rem 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.vendor-card--a .vendor-card__header {
  background: #fff3e0;
  color: #e65100;
}
.vendor-card--b .vendor-card__header {
  background: #fff8e1;
  color: #f57f17;
}
.vendor-card--c .vendor-card__header {
  background: #e3f2fd;
  color: #1565c0;
}

.vendor-card__tag {
  font-size: 0.6rem;
  font-weight: 600;
  opacity: 0.7;
}

.vendor-card__row {
  display: flex;
  justify-content: space-between;
  padding: 0.3rem 0.75rem;
  font-size: 0.78rem;
  border-top: 1px solid var(--db-gray-100);
}

.vk {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--db-gray-600);
  font-size: 0.72rem;
}

.vv {
  font-family: var(--font-mono);
  color: var(--db-gray-800);
  font-size: 0.72rem;
}

/* Action Area */
.schema-action {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: var(--spacing-md) 0;
}

.schema-arrow {
  opacity: 0.5;
  transition: opacity 0.3s ease;
}

.schema-btn {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--db-white);
  background: var(--db-blue);
  border: none;
  padding: 0.65rem 1.5rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  letter-spacing: 0.02em;
}

.schema-btn:hover {
  background: #5254d4;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(97, 101, 240, 0.3);
}

.schema-btn--reset {
  background: var(--db-gray-500);
}
.schema-btn--reset:hover {
  background: var(--db-gray-600);
  box-shadow: 0 4px 12px rgba(107, 114, 128, 0.3);
}

/* Unified Output — hidden by default */
.unified-output {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.unified-card {
  border: 2px solid var(--db-blue);
  border-radius: 10px;
  overflow: hidden;
  background: var(--db-white);
}

.unified-card__header {
  background: var(--db-violet);
  color: var(--db-white);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.6rem 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.unified-card__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
  display: inline-block;
}

.unified-card__row {
  display: grid;
  grid-template-columns: 80px 100px 1fr;
  gap: 0.5rem;
  padding: 0.4rem 0.75rem;
  font-size: 0.78rem;
  border-top: 1px solid var(--db-gray-100);
  align-items: center;
}

.uk {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--db-blue);
  font-size: 0.72rem;
}

.uv {
  font-family: var(--font-mono);
  color: var(--db-gray-900);
  font-weight: 600;
  font-size: 0.72rem;
}

.um {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--db-gray-400, #9ca3af);
  font-style: italic;
}

.unified-card__footer {
  padding: 0.6rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--db-blue);
  background: var(--db-purple-subtle);
  text-align: center;
  border-top: 1px solid rgba(97, 101, 240, 0.1);
}

/* Unified State — Animations */
.schema-demo--unified .vendor-cards {
  opacity: 0.3;
  transform: scale(0.92);
  filter: grayscale(0.5);
}

.schema-demo--unified .schema-arrow {
  opacity: 1;
}

.schema-demo--unified .unified-output {
  max-height: 400px;
  opacity: 1;
}


/* ========================================
   TAB 3: LIVE STREAM SIMULATOR
   ======================================== */

.stream-demo {
  padding: var(--spacing-md);
}

/* Controls */
.stream-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.stream-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--db-white);
  background: var(--db-blue);
  border: none;
  padding: 0.55rem 1.2rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.stream-btn:hover {
  background: #5254d4;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(97, 101, 240, 0.3);
}

.stream-btn--active {
  background: var(--db-red);
}
.stream-btn--active:hover {
  background: #e04434;
  box-shadow: 0 4px 12px rgba(243, 83, 67, 0.3);
}

.stream-btn__icon {
  font-size: 0.7rem;
}

.stream-timer {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.stream-timer__label {
  font-size: 0.65rem;
  color: var(--db-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: var(--font-heading);
  font-weight: 700;
}

.stream-timer__value {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--db-blue);
  line-height: 1;
}

/* Terminal */
.stream-terminal {
  background: #0c0e14;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid #1e2230;
  margin-bottom: var(--spacing-md);
}

.stream-terminal__bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: #141620;
  border-bottom: 1px solid #1e2230;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: #5a6274;
}

.stream-terminal__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  transition: background 0.3s ease;
}

.stream-terminal__dot--idle { background: #3b4252; }
.stream-terminal__dot--connecting { background: #ebcb8b; animation: pulse-dot 1s infinite; }
.stream-terminal__dot--live { background: #4ade80; box-shadow: 0 0 6px rgba(74, 222, 128, 0.5); }

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.stream-terminal__title {
  flex: 1;
}

.stream-terminal__status {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Column headers */
.stream-terminal__head {
  display: grid;
  grid-template-columns: 130px 60px 90px 50px 50px;
  gap: 0;
  padding: 0.35rem 0.75rem;
  background: #101220;
  border-bottom: 1px solid #1a1e30;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 600;
  color: #4a5270;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Body / Scroll area */
.stream-terminal__body {
  height: 260px;
  overflow-y: auto;
  padding: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #8892b0;
  scrollbar-width: thin;
  scrollbar-color: #1e2230 transparent;
}

.stream-terminal__body::-webkit-scrollbar {
  width: 4px;
}
.stream-terminal__body::-webkit-scrollbar-thumb {
  background: #1e2230;
  border-radius: 2px;
}

.stream-prompt {
  color: #4a5270;
  font-size: 0.72rem;
  padding: 0.5rem 0;
  line-height: 1.6;
}

/* Data rows */
.stream-row {
  display: grid;
  grid-template-columns: 130px 60px 90px 50px 50px;
  gap: 0;
  padding: 0.2rem 0;
  font-size: 0.72rem;
  border-bottom: 1px solid rgba(30, 34, 48, 0.5);
  transition: opacity 0.3s ease;
}

.stream-row--new {
  animation: row-flash 0.4s ease-out;
}

@keyframes row-flash {
  0% { background: rgba(97, 101, 240, 0.15); }
  100% { background: transparent; }
}

.str-ts { color: #5a6274; }

.str-sym { font-weight: 600; }
.stream-row--es .str-sym { color: #7c9ff5; }
.stream-row--cl .str-sym { color: #f5b97c; }
.stream-row--gc .str-sym { color: #f5e07c; }

.str-price {
  color: #c0c8e0;
  text-align: right;
  padding-right: 0.5rem;
}

.str-size {
  color: #8892b0;
  text-align: right;
  padding-right: 0.5rem;
}

.str-side {
  font-weight: 600;
  font-size: 0.65rem;
  text-align: center;
}
.str-side--buy { color: #4ade80; }
.str-side--sell { color: #f87171; }


/* Timeline Comparison */
.stream-compare {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.stream-compare__row {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: 0.75rem;
  align-items: center;
}

.stream-compare__label {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--db-gray-600);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stream-compare__track {
  height: 32px;
  background: var(--db-gray-100);
  border-radius: 6px;
  overflow: hidden;
}

.stream-compare__bar {
  height: 100%;
  border-radius: 6px;
  display: flex;
  align-items: center;
  padding: 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  gap: 0.5rem;
  white-space: nowrap;
  overflow: hidden;
}

.stream-compare__bar--legacy {
  background: linear-gradient(90deg, #fecaca 0%, #fde68a 33%, #bfdbfe 66%, #d1fae5 100%);
  color: var(--db-gray-700);
  width: 100%;
}

.stream-compare__bar--legacy span {
  padding: 0 0.25rem;
  border-right: 1px solid rgba(0,0,0,0.1);
}
.stream-compare__bar--legacy span:last-child {
  border-right: none;
}

.stream-compare__bar--db {
  background: linear-gradient(90deg, var(--db-blue), var(--db-blue-light));
  color: var(--db-white);
  width: 8%;
  min-width: 200px;
}

.stream-compare__time {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--db-gray-500);
  white-space: nowrap;
}

.stream-compare__time--fast {
  color: var(--db-blue);
}


/* ========================================
   CTA / FOOTER
   ======================================== */

.cta {
  background: var(--db-violet);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.cta__text {
  color: var(--db-purple-bg);
  font-size: 1.15rem;
  font-family: var(--font-heading);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  line-height: 1.5;
}

.cta__links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.cta__link {
  color: var(--db-blue-light);
  font-size: 0.95rem;
  border-bottom: 1px solid rgba(123, 127, 245, 0.3);
  padding-bottom: 0.15rem;
  transition: all 0.2s ease;
}
.cta__link:hover {
  color: var(--db-white);
  border-bottom-color: var(--db-white);
}

.footer {
  background: var(--db-violet);
  padding: var(--spacing-md) 0;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__text {
  font-size: 0.75rem;
  color: rgba(235, 232, 251, 0.35);
  font-family: var(--font-mono);
}


/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 640px) {
  html { font-size: 15px; }

  .hero { padding: var(--spacing-xl) 0 var(--spacing-lg); }
  .hero h1 { font-size: 1.85rem; }
  .hero__subtitle { font-size: 1rem; }
  h2 { font-size: 1.3rem; }
  .section { padding: var(--spacing-lg) 0; }

  .stats-row {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }

  .stat-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-align: left;
  }
  .stat-card__number { font-size: 1.5rem; min-width: 60px; }

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

  .coverage-legend {
    flex-direction: column;
    gap: 0.5rem;
  }

  /* Tabs — stacked */
  .tabs {
    flex-direction: column;
    border-bottom: none;
    border: 1px solid var(--db-gray-200);
    border-radius: 8px;
    overflow: hidden;
  }
  .tab {
    border-bottom: none;
    border-left: 3px solid transparent;
    margin-bottom: 0;
    padding: 0.75rem var(--spacing-sm);
  }
  .tab + .tab { border-top: 1px solid var(--db-gray-200); }
  .tab--active {
    border-left-color: var(--db-blue);
    background: rgba(97, 101, 240, 0.04);
  }

  /* Calc — stacked controls */
  .calc-controls {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .calc-results {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .calc-savings {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-align: left;
    min-width: auto;
  }
  .calc-savings__number { font-size: 1.6rem; }

  /* Vendor cards — stacked */
  .vendor-cards {
    grid-template-columns: 1fr;
  }

  /* Unified card cols */
  .unified-card__row {
    grid-template-columns: 70px 80px 1fr;
    font-size: 0.72rem;
  }

  /* Stream terminal */
  .stream-terminal__head,
  .stream-row {
    grid-template-columns: 1fr 55px 75px 40px 40px;
    font-size: 0.62rem;
  }

  .stream-terminal__head { font-size: 0.52rem; }

  .stream-terminal__body { height: 220px; }

  .stream-controls {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }

  .stream-compare__row {
    grid-template-columns: 80px 1fr auto;
  }

  .stream-compare__bar--db {
    min-width: 100px;
  }

  .stream-compare__bar--legacy span {
    font-size: 0.5rem;
  }

  .cta__links {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
  }
}

@media (max-width: 380px) {
  .hero h1 { font-size: 1.6rem; }
  .container { padding: 0 var(--spacing-sm); }
  .tab__icon { display: none; }

  .stream-terminal__head,
  .stream-row {
    grid-template-columns: 1fr 50px 65px 35px;
  }
  .stc-side,
  .str-side { display: none; }

  .stream-compare__row {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .stream-compare__bar--legacy span {
    font-size: 0.45rem;
  }
}

/* Print styles */
@media print {
  .top-bar { display: none; }
  .hero { background: white; padding: 2rem 0; }
  .hero h1 { color: var(--db-violet); }
  .hero__subtitle { color: var(--db-gray-600); }
  .hero__author-link { color: var(--db-gray-600); }
  .cta { background: white; }
  .cta__text { color: var(--db-violet); }
  .tab-panel { display: block !important; page-break-inside: avoid; }
  .tabs { display: none; }
  .demo-box { box-shadow: none; border: 1px solid #ccc; }
  .stream-terminal { border: 1px solid #ccc; }
  body { font-size: 11pt; }
}