/* ═══════════════════════════════════════════════
   VEDRA BI — Professional Website Stylesheet
   Pure CSS · No Framework · Dark Theme
═══════════════════════════════════════════════ */

:root {
  --bg: #080c18;
  --bg2: #0d1526;
  --bg3: #111827;
  --surface: #141c2e;
  --surface2: #1a2540;
  --border: #1e2d4a;
  --border2: #243354;

  --purple: #a78bfa;
  --blue: #60a5fa;
  --green: #34d399;
  --pink: #f472b6;
  --orange: #fb923c;
  --yellow: #facc15;
  --cyan: #22d3ee;

  --text: #f1f5f9;
  --text2: #94a3b8;
  --text3: #64748b;

  --grad: linear-gradient(135deg, #a78bfa, #60a5fa, #34d399);
  --grad2: linear-gradient(90deg, #a78bfa, #60a5fa);

  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.5);
  --radius: 14px;
  --radius-sm: 8px;

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

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; }
code { font-family: var(--mono); }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--purple); }

/* ══════════════════════════════════
   UTILITIES
══════════════════════════════════ */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

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

.accent { color: var(--purple); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad);
  color: #0d0d0d;
  box-shadow: 0 4px 20px rgba(167,139,250,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(167,139,250,0.5);
}

.btn-ghost {
  background: transparent;
  color: var(--text2);
  border: 1.5px solid var(--border2);
}
.btn-ghost:hover {
  background: var(--surface);
  color: var(--text);
  border-color: var(--purple);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border2);
}
.btn-outline:hover {
  background: var(--surface);
  border-color: var(--purple);
}

/* ══════════════════════════════════
   REVEAL ANIMATIONS
══════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  transition-delay: var(--delay, 0s);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ══════════════════════════════════
   NAVBAR
══════════════════════════════════ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0;
  transition: background 0.3s, box-shadow 0.3s, padding 0.3s;
}

.navbar.scrolled {
  background: rgba(8, 12, 24, 0.92);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
  padding: 0;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 2rem;
  transition: padding 0.3s;
}

.navbar.scrolled .nav-inner { padding: 14px 24px; }

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  flex-shrink: 0;
}
.logo-icon { font-size: 1.4rem; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex: 1;
  justify-content: center;
}

.nav-links a {
  padding: 8px 14px;
  border-radius: 8px;
  color: var(--text2);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s;
}
.nav-links a:hover {
  color: var(--text);
  background: var(--surface);
}

.nav-cta { margin-left: auto; font-size: 0.88rem; padding: 10px 18px; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text2);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ══════════════════════════════════
   HERO
══════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
  padding: 8rem 24px 5rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.hero-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

#particleCanvas {
  width: 100%;
  height: 100%;
  opacity: 0.5;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(167,139,250,0.1);
  border: 1px solid rgba(167,139,250,0.3);
  border-radius: 100px;
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--purple);
  margin-bottom: 1.5rem;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}

.hero-title {
  font-size: clamp(2.6rem, 5vw, 4.2rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 1.25rem;
}

.hero-line { display: block; }

.hero-sub {
  font-size: 1.05rem;
  color: var(--text2);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 520px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.stat-item > span:first-child {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-item > span:nth-child(2) {
  font-size: 1.4rem;
  font-weight: 900;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.73rem;
  color: var(--text3);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  -webkit-text-fill-color: var(--text3) !important;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border2);
  flex-shrink: 0;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ── Dashboard Mock ── */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.dashboard-mock {
  width: 100%;
  max-width: 480px;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 80px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.05);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%,100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}

.mock-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
}

.mock-dots { display: flex; gap: 6px; }
.mock-dots span {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.mock-dots span:nth-child(1) { background: #ff5f57; }
.mock-dots span:nth-child(2) { background: #febc2e; }
.mock-dots span:nth-child(3) { background: #28c840; }

.mock-title {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text2);
  flex: 1;
  text-align: center;
}

.mock-controls { display: flex; gap: 6px; }
.mock-controls span {
  width: 20px; height: 5px;
  background: var(--border2);
  border-radius: 3px;
}

.mock-body {
  display: flex;
  height: 280px;
}

.mock-sidebar {
  width: 120px;
  background: rgba(0,0,0,0.2);
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-right: 1px solid var(--border);
  flex-shrink: 0;
}

.mock-menu-item {
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 0.7rem;
  color: var(--text3);
  cursor: pointer;
  transition: all 0.2s;
}
.mock-menu-item.active {
  background: rgba(167,139,250,0.15);
  color: var(--purple);
  font-weight: 600;
}

.mock-main {
  flex: 1;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: hidden;
}

.mock-kpis {
  display: flex;
  gap: 8px;
}

.mock-kpi {
  flex: 1;
  background: var(--bg3);
  border-radius: 8px;
  padding: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
}

.kpi-icon {
  width: 28px; height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}
.kpi-icon.purple { background: rgba(167,139,250,0.15); }
.kpi-icon.blue { background: rgba(96,165,250,0.15); }
.kpi-icon.green { background: rgba(52,211,153,0.15); }

.kpi-val { font-size: 0.72rem; font-weight: 700; color: var(--text); line-height: 1.2; }
.kpi-lbl { font-size: 0.6rem; color: var(--text3); }

.mock-charts {
  display: flex;
  gap: 8px;
  flex: 1;
}

.mock-chart-box {
  flex: 1;
  background: var(--bg3);
  border-radius: 8px;
  padding: 8px;
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.chart-label {
  font-size: 0.6rem;
  color: var(--text3);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mini-bar-chart {
  flex: 1;
  display: flex;
  align-items: flex-end;
  gap: 3px;
  padding: 4px 0;
}

.bar {
  flex: 1;
  background: linear-gradient(to top, var(--purple), var(--blue));
  border-radius: 3px 3px 0 0;
  animation: barGrow 1.5s ease-out forwards;
  transform-origin: bottom;
}

@keyframes barGrow {
  from { transform: scaleY(0); }
  to { transform: scaleY(1); }
}

.mini-pie {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pie-svg { width: 60px; height: 60px; transform: rotate(-90deg); }

/* ══════════════════════════════════
   SECTIONS
══════════════════════════════════ */
.section {
  padding: 7rem 0;
}

.section-alt {
  background: var(--bg2);
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(167,139,250,0.1);
  border: 1px solid rgba(167,139,250,0.25);
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--purple);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.section-sub {
  color: var(--text2);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ══════════════════════════════════
   OVERVIEW GRID
══════════════════════════════════ */
.overview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.overview-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.overview-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad);
  opacity: 0;
  transition: opacity 0.3s;
}

.overview-card:hover {
  border-color: var(--purple);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(167,139,250,0.15);
}

.overview-card:hover::before { opacity: 0.04; }

.oc-icon {
  font-size: 2.2rem;
  margin-bottom: 1rem;
  display: block;
}

.overview-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.overview-card p {
  color: var(--text2);
  font-size: 0.92rem;
  line-height: 1.65;
}

/* ══════════════════════════════════
   FEATURES LIST
══════════════════════════════════ */
.features-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.feature-row {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 2.5rem;
  transition: all 0.3s;
}

.feature-row:hover {
  border-color: var(--border2);
  box-shadow: var(--shadow);
}

.feature-icon-wrap {
  flex-shrink: 0;
}

.feature-icon {
  width: 64px; height: 64px;
  border-radius: 16px;
  background: color-mix(in srgb, var(--clr) 15%, transparent);
  border: 1px solid color-mix(in srgb, var(--clr) 30%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.feature-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.feature-content p {
  color: var(--text2);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 1rem;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  padding: 4px 12px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border2);
  border-radius: 100px;
  font-size: 0.78rem;
  color: var(--text2);
  font-weight: 500;
}

/* ══════════════════════════════════
   TECH GRID
══════════════════════════════════ */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.tech-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: all 0.25s;
}

.tech-card:hover {
  border-color: var(--purple);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(167,139,250,0.1);
}

.tech-icon { font-size: 2rem; }

.tech-name {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.tech-desc {
  font-size: 0.8rem;
  color: var(--text2);
  line-height: 1.5;
}

/* ══════════════════════════════════
   CHART GALLERY
══════════════════════════════════ */
.chart-gallery {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.25s;
}

.chart-card:hover {
  border-color: var(--purple);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(167,139,250,0.15);
}

.chart-preview {
  background: var(--bg3);
  height: 110px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  border-bottom: 1px solid var(--border);
}

.chart-name {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text);
  padding: 8px 12px 2px;
}

.chart-engine {
  font-size: 0.72rem;
  color: var(--purple);
  padding: 0 12px 10px;
  font-weight: 500;
}

/* Bar preview */
.bar-preview {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  padding: 16px;
}

.bp-bar {
  flex: 1;
  background: var(--c);
  border-radius: 3px 3px 0 0;
  opacity: 0.85;
  transition: height 0.3s;
}

/* Line preview */
.line-preview { padding: 8px; }
.line-svg { width: 100%; height: 100%; }

/* Pie preview */
.pie-preview { padding: 16px; }
.pie-svg-big { width: 75px; height: 75px; transform: rotate(-90deg); }

/* Radar preview */
.radar-preview { padding: 8px; }
.radar-preview svg { width: 85px; height: 85px; }

/* Scatter preview */
.scatter-preview { padding: 8px; }
.scatter-preview svg { width: 100%; height: 85px; }

/* Gauge preview */
.gauge-preview { padding: 8px; }
.gauge-preview svg { width: 100px; height: 65px; }

/* Funnel preview */
.funnel-preview { padding: 8px; }
.funnel-preview svg { width: 85px; height: 80px; }

/* Treemap preview */
.treemap-preview { padding: 8px; }
.treemap-preview svg { width: 90px; height: 75px; }

/* 3D Bar preview */
.bar3d-preview { perspective: 200px; }
.bar3d-scene {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  transform: rotateX(30deg) rotateY(-15deg);
  padding-bottom: 10px;
}
.b3d {
  width: 22px;
  height: var(--h);
  background: var(--c);
  border-radius: 2px 2px 0 0;
  transform: translateX(var(--x));
  opacity: 0.85;
  position: relative;
}
.b3d::after {
  content: '';
  position: absolute;
  top: -4px; left: 0; right: 0;
  height: 4px;
  background: color-mix(in srgb, var(--c) 80%, white);
  transform: skewX(-30deg) translateX(6px);
}

/* KPI preview */
.kpi-preview { padding: 8px; }
.kpi-demo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.kpi-num {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text);
  font-family: var(--mono);
}
.kpi-spark { width: 80px; }
.kpi-spark svg { width: 100%; }
.kpi-badge {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--green);
  background: rgba(52,211,153,0.12);
  padding: 2px 8px;
  border-radius: 100px;
}

/* ══════════════════════════════════
   ARCHITECTURE TREE
══════════════════════════════════ */
.arch-layout {
  max-width: 800px;
  margin: 0 auto;
}

.arch-tree {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  font-family: var(--mono);
  font-size: 0.88rem;
}

.tree-root {
  color: var(--purple);
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.tree-branch {
  padding-left: 1.5rem;
  border-left: 1px solid var(--border2);
  margin-left: 0.5rem;
}

.tree-item {
  padding: 4px 0;
  display: flex;
  align-items: baseline;
  gap: 6px;
  color: var(--text2);
}

.tree-item.file { color: var(--text2); }
.tree-item.folder { color: var(--blue); font-weight: 600; }

.tree-desc {
  color: var(--text3);
  font-size: 0.78rem;
}

/* ══════════════════════════════════
   INSTALLATION STEPS
══════════════════════════════════ */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.step-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all 0.25s;
}

.step-card:hover {
  border-color: var(--border2);
  box-shadow: var(--shadow);
}

.step-num {
  font-size: 2.5rem;
  font-weight: 900;
  font-family: var(--mono);
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.75rem;
}

.step-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.step-card p {
  color: var(--text2);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  line-height: 1.6;
}

.prereq-list { display: flex; flex-direction: column; gap: 0.5rem; }
.prereq-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text2);
}
.prereq-badge {
  padding: 2px 10px;
  background: rgba(167,139,250,0.1);
  border: 1px solid rgba(167,139,250,0.3);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--purple);
  flex-shrink: 0;
}

/* Code Block */
.code-block {
  background: var(--bg);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-top: 0.5rem;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--border);
}

.code-lang {
  font-size: 0.73rem;
  color: var(--text3);
  font-family: var(--mono);
  font-weight: 600;
}

.copy-btn {
  font-size: 0.72rem;
  color: var(--text3);
  background: none;
  border: 1px solid var(--border2);
  border-radius: 4px;
  padding: 3px 10px;
  cursor: pointer;
  font-family: var(--font);
  transition: all 0.2s;
}
.copy-btn:hover {
  color: var(--text);
  border-color: var(--purple);
}
.copy-btn.copied {
  color: var(--green);
  border-color: var(--green);
}

pre {
  padding: 14px;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--text2);
  overflow-x: auto;
}

.c-green { color: var(--green); }
.c-blue { color: var(--blue); }
.c-orange { color: var(--orange); }
.c-comment { color: var(--text3); }

.firebase-steps {
  padding-left: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--text2);
  line-height: 1.5;
}
.firebase-steps a {
  color: var(--blue);
  text-decoration: underline;
  text-decoration-color: rgba(96,165,250,0.4);
}

.step-note {
  margin-top: 0.75rem;
  font-size: 0.82rem;
  color: var(--text3);
}
.step-note code {
  color: var(--green);
}

/* ══════════════════════════════════
   USAGE GRID
══════════════════════════════════ */
.usage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.usage-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all 0.25s;
}

.usage-card:hover {
  border-color: var(--border2);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.usage-icon {
  font-size: 2.2rem;
  margin-bottom: 1rem;
  display: block;
}

.usage-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.usage-card ol {
  padding-left: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.88rem;
  color: var(--text2);
  line-height: 1.55;
}

.export-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.export-opt {
  padding: 4px 12px;
  background: rgba(52,211,153,0.1);
  border: 1px solid rgba(52,211,153,0.25);
  border-radius: 100px;
  font-size: 0.77rem;
  font-weight: 600;
  color: var(--green);
}

/* ══════════════════════════════════
   API TABLE
══════════════════════════════════ */
.api-table-wrap {
  overflow-x: auto;
}

.api-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.api-table th {
  padding: 14px 20px;
  text-align: left;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text3);
  background: var(--surface);
  border-bottom: 2px solid var(--border2);
}

.api-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  color: var(--text2);
  vertical-align: middle;
}

.api-table tr:last-child td { border-bottom: none; }
.api-table tr:hover td { background: rgba(255,255,255,0.02); }
.api-table td code {
  color: var(--cyan);
  font-size: 0.85rem;
}

.method {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 0.73rem;
  font-weight: 700;
  font-family: var(--mono);
}
.method.post { background: rgba(52,211,153,0.15); color: var(--green); }
.method.get { background: rgba(96,165,250,0.15); color: var(--blue); }

/* Module Grid */
.module-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.module-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.25s;
}

.module-card:hover {
  border-color: var(--border2);
  box-shadow: var(--shadow);
}

.module-header {
  padding: 14px 20px;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--border);
}

.module-file {
  font-family: var(--mono);
  font-size: 0.88rem;
  color: var(--yellow);
  font-weight: 600;
}

.module-exports {
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.export-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 0.83rem;
}

.export-row code {
  color: var(--cyan);
  font-size: 0.8rem;
  flex-shrink: 0;
}

.export-row span {
  color: var(--text3);
  font-size: 0.78rem;
}

/* ══════════════════════════════════
   SECURITY GRID
══════════════════════════════════ */
.security-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.security-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  transition: all 0.25s;
}

.security-card:hover {
  border-color: var(--purple);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(167,139,250,0.12);
}

.sec-icon { font-size: 2.5rem; margin-bottom: 1rem; display: block; }
.security-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 0.5rem; }
.security-card p { color: var(--text2); font-size: 0.88rem; line-height: 1.6; }

/* ══════════════════════════════════
   SUPPORT GRID
══════════════════════════════════ */
.support-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.support-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all 0.25s;
  cursor: pointer;
}

.support-card:hover {
  border-color: var(--purple);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(167,139,250,0.12);
}

.sup-icon {
  font-size: 2rem;
  color: var(--purple);
  display: flex;
  align-items: center;
}

.support-card h3 { font-size: 1rem; font-weight: 700; color: var(--text); }
.support-card p { color: var(--text2); font-size: 0.88rem; line-height: 1.55; }
.sup-link { font-size: 0.82rem; color: var(--blue); font-weight: 500; margin-top: auto; }

/* ══════════════════════════════════
   FOOTER
══════════════════════════════════ */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem;
}

.footer-top {
  display: flex;
  gap: 4rem;
  margin-bottom: 3rem;
}

.footer-brand { flex-shrink: 0; }

.footer-tagline {
  color: var(--text3);
  font-size: 0.88rem;
  line-height: 1.65;
  margin-top: 0.75rem;
}

.footer-links-group {
  display: flex;
  gap: 3rem;
  flex: 1;
  justify-content: flex-end;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-col-title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.footer-col a {
  font-size: 0.88rem;
  color: var(--text3);
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--purple); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text3);
}

/* ══════════════════════════════════
   RESPONSIVE
══════════════════════════════════ */
@media (max-width: 1100px) {
  .tech-grid { grid-template-columns: repeat(3, 1fr); }
  .chart-gallery { grid-template-columns: repeat(4, 1fr); }
  .overview-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: 6rem;
  }

  .hero-sub, .hero-stats, .hero-actions { margin-left: auto; margin-right: auto; }
  .hero-stats { justify-content: center; }
  .hero-actions { justify-content: center; }
  .hero-visual { order: -1; }

  .dashboard-mock { max-width: 380px; }

  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: var(--bg2);
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    z-index: 999;
  }

  .overview-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .chart-gallery { grid-template-columns: repeat(3, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .usage-grid { grid-template-columns: repeat(2, 1fr); }
  .security-grid { grid-template-columns: repeat(2, 1fr); }
  .support-grid { grid-template-columns: repeat(2, 1fr); }
  .module-grid { grid-template-columns: 1fr; }
  .footer-top { flex-direction: column; gap: 2rem; }
  .footer-links-group { justify-content: flex-start; }
}

@media (max-width: 640px) {
  .section { padding: 4rem 0; }
  .overview-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .chart-gallery { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: 1fr; }
  .usage-grid { grid-template-columns: 1fr; }
  .security-grid { grid-template-columns: 1fr; }
  .support-grid { grid-template-columns: 1fr; }
  .feature-row { flex-direction: column; gap: 1.25rem; padding: 1.5rem; }
  .footer-links-group { flex-wrap: wrap; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
  .hero-stats { flex-wrap: wrap; gap: 1rem; }
  .stat-divider { display: none; }
}