/* IntentChain Landing Page — Styles */

/* ── Scroll Progress ──────────────────────────────────── */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: var(--gradient-accent);
  z-index: 1001;
  transition: width 0.1s linear;
}

/* ── Scroll Progress ──────────────────────────────────── */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gradient-accent);
  z-index: 200;
  transition: width 0.1s linear;
  pointer-events: none;
}

/* ── Nav ──────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-md) 0;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}
.nav--scrolled {
  background: rgba(11, 15, 26, 0.85);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}
[data-theme="light"] .nav--scrolled {
  background: rgba(255, 255, 255, 0.85);
}
.nav__inner {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  color: var(--color-text);
  text-decoration: none;
}
.nav__logo {
  width: 28px;
  height: 28px;
  background: var(--gradient-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.nav__logo svg { width: 16px; height: 16px; }
.nav__links {
  display: flex;
  gap: var(--space-lg);
  margin-left: auto;
  align-items: center;
}
.nav__link,
.nav__dropdown-trigger {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}
.nav__dropdown-trigger {
  padding: 0;
  border: none;
  background: none;
}
.nav__link:hover,
.nav__link--active,
.nav__dropdown-trigger:hover,
.nav__dropdown--open .nav__dropdown-trigger,
.nav__dropdown--active .nav__dropdown-trigger {
  color: var(--color-text);
}
.nav__link--active::after,
.nav__dropdown--active .nav__dropdown-trigger::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: 1px;
}
.nav__dropdown {
  position: relative;
}
.nav__dropdown-caret {
  transition: transform var(--transition-base);
}
.nav__dropdown--open .nav__dropdown-caret {
  transform: rotate(180deg);
}
.nav__dropdown-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  min-width: 280px;
  padding: var(--space-xs);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.nav__dropdown-menu[hidden] {
  display: none !important;
}
.nav__dropdown-link {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  transition: background var(--transition-fast), color var(--transition-fast);
}
.nav__dropdown-link:hover,
.nav__dropdown-link--active {
  background: var(--color-accent-subtle);
  color: var(--color-text);
}
.nav__dropdown-link-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
}
.nav__dropdown-link-meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}
.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.nav__mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  padding: var(--space-xs);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

@keyframes navSlideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Hero ─────────────────────────────────────────────── */
.hero {
  padding-top: calc(80px + var(--space-5xl));
  padding-bottom: var(--space-3xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero__glow {
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: var(--gradient-hero-glow, radial-gradient(ellipse at center, rgba(99,102,241,0.12) 0%, transparent 70%));
  pointer-events: none;
  z-index: 0;
}
.hero__content {
  position: relative;
  z-index: 1;
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}
.hero__eyebrow-dot {
  width: 8px;
  height: 8px;
  background: var(--color-success);
  border-radius: var(--radius-full);
  animation: pulse-dot 2s infinite;
  box-shadow: 0 0 6px var(--color-success);
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.hero__title {
  max-width: 900px;
  margin: 0 auto var(--space-lg);
  line-height: var(--line-height-tight);
}
.hero__title--gradient {
  background: var(--gradient-text, linear-gradient(135deg, #818cf8, #a78bfa, #c084fc));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero__subtitle {
  max-width: 680px;
  margin: 0 auto var(--space-xl);
  color: var(--color-text-secondary);
}
.hero__metrics {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}
.hero__metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.hero__metric-val {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  font-family: var(--font-mono);
}
.hero__metric-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}
.hero__metric-sep {
  width: 1px;
  height: 28px;
  background: var(--color-border-subtle);
}
.hero__actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  margin-bottom: var(--space-xl);
}
.hero__integrations {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.hero__integrations-label {
  opacity: 0.5;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: var(--text-xs);
}
.hero__integrations-list {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}
.hero__integrations-list span[aria-hidden] {
  opacity: 0.3;
}
.hero__terminal {
  max-width: 640px;
  margin: 0 auto;
  text-align: left;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  background: var(--color-surface);
  box-shadow: var(--shadow-lg), 0 0 40px rgba(99, 102, 241, 0.06);
}
.hero__terminal-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}
.hero__terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
}
.hero__terminal-dot--red { background: #ef4444; }
.hero__terminal-dot--yellow { background: #f59e0b; }
.hero__terminal-dot--green { background: #22c55e; }
.hero__terminal-title {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  margin-left: var(--space-sm);
}
.hero__terminal-body {
  padding: var(--space-md) var(--space-lg);
  overflow-x: auto;
}
.hero__terminal-body .code-block {
  margin: 0;
  background: none;
  border: none;
  padding: 0;
  line-height: 1;
}
.hero__terminal-body .code-block--numbered .line {
  line-height: 1.6;
}

/* ── Pain Bridge ──────────────────────────────────────── */
.pain-bridge {
  padding: var(--space-3xl) 0;
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}
.pain-bridge__header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto var(--space-2xl);
}
.pain-bridge__subtitle {
  color: var(--color-text-secondary);
  margin: var(--space-md) auto 0;
}
.pain-bridge__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}
.pain-bridge__item {
  text-align: center;
}
.pain-bridge__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
}
.pain-bridge__icon--danger { background: var(--color-danger-subtle); color: var(--color-danger); }
.pain-bridge__icon--warning { background: var(--color-warning-subtle); color: var(--color-warning); }
.pain-bridge__icon--accent { background: var(--color-accent-subtle); color: var(--color-accent); }
.pain-bridge__title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-xs);
}
.pain-bridge__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ── How It Works ─────────────────────────────────────── */
.how { border-top: 1px solid var(--color-border-subtle); }
.how__header { text-align: center; margin-bottom: var(--space-4xl); }
.how__subtitle { color: var(--color-text-secondary); max-width: 600px; margin: var(--space-md) auto 0; }
.how__steps-visual {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: var(--space-lg);
}
.how__step {
  flex: 0 1 260px;
  text-align: center;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  transition: background var(--transition-base);
}
.how__step:hover {
  background: var(--color-surface);
}
.how__step-number {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  color: var(--color-accent);
  margin: 0 auto var(--space-md);
}
.how__step-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-sm);
}
.how__step-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}
.how__connector {
  color: var(--color-text-muted);
  margin-top: 28px;
  flex-shrink: 0;
}

/* ── Flow Simulator ───────────────────────────────────── */
.flow-sim { border-top: 1px solid var(--color-border-subtle); }
.flow-sim__header { text-align: center; margin-bottom: var(--space-3xl); }
.flow-sim__subtitle { color: var(--color-text-secondary); max-width: 680px; margin: var(--space-md) auto 0; }

.flow-sim__body {
  max-width: 860px;
  margin: 0 auto;
}

/* Timeline steps */
.flow-sim__timeline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  margin-bottom: var(--space-xl);
  padding: 0 var(--space-sm);
}
.flow-sim__progress-track {
  position: absolute;
  top: 18px;
  left: 24px;
  right: 24px;
  height: 2px;
  background: var(--color-border-subtle);
  z-index: 0;
  border-radius: 1px;
}
.flow-sim__progress-fill {
  height: 100%;
  width: 0%;
  background: var(--gradient-accent);
  border-radius: 1px;
  transition: width 0.4s ease;
}
.flow-sim__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1;
  padding: 0;
  color: var(--color-text-muted);
  transition: color var(--transition-base);
}
.flow-sim__step-num {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  background: var(--color-bg);
  transition: all var(--transition-base);
}
.flow-sim__step-label {
  font-size: var(--font-size-xs);
  white-space: nowrap;
}
/* Active step */
.flow-sim__step--active .flow-sim__step-num {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 0 12px rgba(99, 102, 241, 0.4);
}
.flow-sim__step--active {
  color: var(--color-text);
}
/* Done step */
.flow-sim__step--done .flow-sim__step-num {
  border-color: var(--color-success);
  background: var(--color-success);
  color: #fff;
}
.flow-sim__step--done {
  color: var(--color-text);
}

/* Detail panel */
.flow-sim__detail {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  min-height: 260px;
  margin-bottom: var(--space-lg);
  position: relative;
  overflow: hidden;
}
.flow-sim__detail-inner {
  animation: flowFadeIn 0.3s ease;
}
@keyframes flowFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.flow-sim__detail-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-sm);
}
.flow-sim__detail-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  line-height: var(--line-height-relaxed);
}
.flow-sim__detail-data {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-sm);
}
.flow-sim__datum {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: var(--space-sm);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
}
.flow-sim__datum-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-semibold);
}
.flow-sim__datum-val {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  word-break: break-all;
}
.flow-sim__datum-val--success { color: var(--color-success); }
.flow-sim__datum-val--accent { color: var(--color-accent); }
.flow-sim__datum-val--warning { color: var(--color-warning); }

/* Controls */
.flow-sim__controls {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
}
.flow-sim__btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}
.flow-sim__btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.flow-sim__btn--play {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}
.flow-sim__btn--play:hover {
  opacity: 0.9;
  color: #fff;
}
.flow-sim__btn--playing {
  background: var(--color-warning);
  border-color: var(--color-warning);
}

/* ── Permit Decoder ───────────────────────────────────── */
.permit-dec { border-top: 1px solid var(--color-border-subtle); }
.permit-dec--article {
  border-top: none;
  margin: var(--space-3xl) 0;
}
.permit-dec__header { text-align: center; margin-bottom: var(--space-3xl); }
.permit-dec__body { max-width: 860px; margin: 0 auto; }

.permit-dec__raw {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  line-height: 1.8;
  word-break: break-all;
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
  overflow-x: auto;
  cursor: pointer;
  transition: border-color var(--transition-base);
}
.permit-dec__raw:hover {
  border-color: var(--color-accent);
}
.permit-dec__part {
  transition: all 0.3s ease;
  border-radius: 2px;
  padding: 1px 0;
}
.permit-dec__part--header { color: #60a5fa; } /* blue */
.permit-dec__part--payload { color: #a78bfa; } /* purple */
.permit-dec__part--sig { color: #34d399; } /* green */
.permit-dec__dot { color: var(--color-text-muted); }

/* Decoded highlight state */
.permit-dec__raw--decoded .permit-dec__part--header { background: rgba(96, 165, 250, 0.12); }
.permit-dec__raw--decoded .permit-dec__part--payload { background: rgba(167, 139, 250, 0.12); }
.permit-dec__raw--decoded .permit-dec__part--sig { background: rgba(52, 211, 153, 0.12); }

/* Panels */
.permit-dec__panels {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.permit-dec__panels--visible {
  opacity: 1;
  transform: translateY(0);
}
.permit-dec__panel {
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  border: 1px solid;
}
.permit-dec__panel--header {
  border-color: rgba(96, 165, 250, 0.3);
  background: rgba(96, 165, 250, 0.04);
}
.permit-dec__panel--payload {
  border-color: rgba(167, 139, 250, 0.3);
  background: rgba(167, 139, 250, 0.04);
}
.permit-dec__panel--sig {
  border-color: rgba(52, 211, 153, 0.3);
  background: rgba(52, 211, 153, 0.04);
}
[data-theme="light"] .permit-dec__panel--header { background: rgba(96, 165, 250, 0.06); }
[data-theme="light"] .permit-dec__panel--payload { background: rgba(167, 139, 250, 0.06); }
[data-theme="light"] .permit-dec__panel--sig { background: rgba(52, 211, 153, 0.06); }

.permit-dec__panel-title {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.permit-dec__panel-badge {
  font-size: var(--font-size-xs);
  background: rgba(167, 139, 250, 0.15);
  color: #a78bfa;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-semibold);
}
.permit-dec__code {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  line-height: 1.4;
  margin: 0;
  overflow-x: auto;
}
.permit-dec__code code { background: none; padding: 0; }
.permit-dec__sig-info {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}
.permit-dec__sig-badge {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: #34d399;
  white-space: nowrap;
  flex-shrink: 0;
}
.permit-dec__sig-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ── Code Tabs ────────────────────────────────────────── */
.code-tabs { border-top: 1px solid var(--color-border-subtle); }
.code-tabs__header { text-align: center; margin-bottom: var(--space-3xl); }

.code-tabs__body {
  max-width: 740px;
  margin: 0 auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
}
.code-tabs__bar {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--color-border);
  position: relative;
  background: var(--color-bg);
}
.code-tabs__tab {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-muted);
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition-base);
  text-align: center;
}
.code-tabs__tab:hover { color: var(--color-text); }
.code-tabs__tab--active { color: var(--color-accent); }
.code-tabs__indicator {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  background: var(--gradient-accent);
  transition: left 0.3s ease, width 0.3s ease;
  border-radius: 1px;
}
.code-tabs__file {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  padding: var(--space-sm) var(--space-lg);
  border-bottom: 1px solid var(--color-border-subtle);
  background: var(--color-bg);
}
.code-tabs__panels { position: relative; }
.code-tabs__panel {
  display: none;
  padding: var(--space-md) var(--space-lg);
  overflow-x: auto;
}
.code-tabs__panel--active { display: block; }
.code-tabs__panel .code-block {
  margin: 0;
  background: none;
  border: none;
  padding: 0;
}

/* ── Failure Scenarios ────────────────────────────────── */
.scenarios { border-top: 1px solid var(--color-border-subtle); }
.scenarios__header { text-align: center; margin-bottom: var(--space-3xl); }

.scenarios__table-wrap {
  overflow-x: auto;
  max-width: 860px;
  margin: 0 auto;
}
.scenarios__table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}
.scenarios__table thead th {
  text-align: left;
  padding: var(--space-sm) var(--space-md);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}
.scenarios__table td {
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border-subtle);
  vertical-align: top;
}
.scenarios__table tbody tr {
  transition: background var(--transition-base);
}
.scenarios__table tbody tr:hover td {
  background: var(--color-surface);
}
.scenarios__highlight-col {
  background: rgba(99, 102, 241, 0.04);
}
[data-theme="light"] .scenarios__highlight-col {
  background: rgba(99, 102, 241, 0.06);
}
.scenarios__attack {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.scenarios__attack-name {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}
.scenarios__attack-desc {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}
.scenarios__pass {
  color: var(--color-success);
  font-weight: var(--font-weight-semibold);
}
.scenarios__fail {
  color: var(--color-danger);
}
.scenarios__partial {
  color: var(--color-warning);
}

/* ── Features ─────────────────────────────────────────── */
.features { border-top: 1px solid var(--color-border-subtle); contain: content; }
.features__header { text-align: center; margin-bottom: var(--space-4xl); }
.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}
.feature-card {
  padding: var(--space-xl);
  transition: border-color var(--transition-base), transform var(--transition-base);
}
.feature-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}
.feature-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}
.feature-card__icon--accent { background: var(--color-accent-subtle); color: var(--color-accent); }
.feature-card__icon--success { background: var(--color-success-subtle); color: var(--color-success); }
.feature-card__icon--warning { background: var(--color-warning-subtle); color: var(--color-warning); }
.feature-card__icon--danger { background: var(--color-danger-subtle); color: var(--color-danger); }
.feature-card__icon--muted { background: var(--color-accent-subtle); color: var(--color-text-muted); }
.feature-card__title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-sm);
}
.feature-card__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ── Industry Verticals ───────────────────────────────── */
.verticals { border-top: 1px solid var(--color-border-subtle); }
.verticals__header { text-align: center; margin-bottom: var(--space-3xl); }

.verticals__body {
  max-width: 860px;
  margin: 0 auto;
}
.verticals__tabs {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-xl);
  overflow-x: auto;
  padding-bottom: var(--space-xs);
}
.verticals__tab {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-muted);
  background: none;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}
.verticals__tab:hover {
  border-color: var(--color-border);
  color: var(--color-text);
}
.verticals__tab--active {
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
  color: var(--color-accent);
}
.verticals__panel {
  display: none;
  animation: flowFadeIn 0.3s ease;
}
.verticals__panel--active { display: block; }
.verticals__panel-content {
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.verticals__panel-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-sm);
}
.verticals__panel-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-lg);
}
.verticals__usecases {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}
.verticals__usecase {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
}
.verticals__usecase-icon {
  color: var(--color-accent);
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
}
.verticals__risk {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* ── Architecture ─────────────────────────────────────── */
.arch { border-top: 1px solid var(--color-border-subtle); contain: content; }
.arch__intro {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}
.arch__intro-item {
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.arch__intro-item .label {
  display: inline-flex;
  margin-bottom: var(--space-sm);
}
.arch__intro-item p {
  margin: 0;
  color: var(--color-text-secondary);
}
.arch__header { text-align: center; margin-bottom: var(--space-3xl); }
.arch__diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}
.arch__node {
  flex: 0 1 200px;
  max-width: 220px;
  text-align: center;
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: box-shadow var(--transition-base);
}
.arch__node:hover {
  box-shadow: var(--shadow-md);
}
.arch__node--center {
  border-color: var(--color-accent);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.1);
}
.arch__node--target {
  border-color: rgba(251, 191, 36, 0.25);
  background: linear-gradient(180deg, rgba(251, 191, 36, 0.06), transparent);
}
.arch__node-icon {
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}
.arch__node--center .arch__node-icon { color: var(--color-accent); }
.arch__node--target .arch__node-icon { color: var(--color-warning); }
.arch__node-label {
  font-weight: var(--font-weight-bold);
  margin-bottom: 2px;
}
.arch__node-desc {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}
.arch__node-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  justify-content: center;
  margin-top: var(--space-sm);
}
.arch__metric {
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  padding: 1px 6px;
  border-radius: var(--radius-sm);
}
.arch__arrow {
  color: var(--color-text-muted);
  flex-shrink: 0;
}
.arch__arrow-svg {
  display: block;
}
.arch__outcomes {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.arch__flavors {
  margin-top: var(--space-2xl);
}
.arch__flavors-header {
  max-width: 780px;
  margin: 0 auto var(--space-xl);
  text-align: center;
}
.arch__flavors-text {
  color: var(--color-text-secondary);
  margin-top: var(--space-sm);
}
.arch__flavors-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-lg);
}
.arch__flavor {
  padding: var(--space-xl);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--gradient-surface);
  box-shadow: var(--shadow-sm);
}
.arch__flavor--enterprise {
  border-color: rgba(99, 102, 241, 0.28);
  box-shadow: var(--shadow-sm), 0 0 28px rgba(99, 102, 241, 0.08);
}
.arch__flavor-top {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
  margin-bottom: var(--space-lg);
}
.arch__flavor-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  flex-shrink: 0;
}
.arch__flavor--enterprise .arch__flavor-icon {
  color: var(--color-warning);
  background: var(--color-warning-subtle);
}
.arch__flavor-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin-bottom: 4px;
}
.arch__flavor-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}
.arch__flavor-path {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}
.arch__flavor-path-node {
  padding: 6px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-subtle);
  background: var(--color-surface);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-secondary);
}
.arch__flavor-path-node--accent {
  border-color: rgba(99, 102, 241, 0.3);
  background: var(--color-accent-subtle);
  color: var(--color-text);
}
.arch__flavor-path-node--warning {
  border-color: rgba(245, 158, 11, 0.32);
  background: var(--color-warning-subtle);
  color: var(--color-text);
}
.arch__flavor-path-arrow {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}
.arch__flavor-text {
  color: var(--color-text-secondary);
  margin: 0;
}

/* ── CTA ──────────────────────────────────────────────── */
.cta {
  border-top: 1px solid var(--color-border-subtle);
  text-align: center;
}
.cta__content {
  max-width: 600px;
  margin: 0 auto;
}
.cta__title {
  margin-bottom: var(--space-md);
}
.cta__text {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}
.cta__actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
}

/* ── Footer ───────────────────────────────────────────── */
.footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-border-subtle);
  position: relative;
}
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-accent);
  opacity: 0.3;
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}
.footer__links {
  display: flex;
  gap: var(--space-lg);
}
.footer__link {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.footer__link:hover { color: var(--color-text); }
.footer__right {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* ── Back to Top ──────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base), transform var(--transition-base);
  z-index: 90;
  box-shadow: var(--shadow-md);
}
.back-to-top--visible {
  opacity: 1;
  pointer-events: auto;
}
.back-to-top:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
}

/* ── Code block numbered lines ────────────────────────── */
.code-block--numbered {
  counter-reset: line;
}
.code-block--numbered .line {
  display: block;
}
.code-block--numbered .line::before {
  counter-increment: line;
  content: counter(line);
  display: inline-block;
  width: 2ch;
  margin-right: 1.5ch;
  text-align: right;
  color: var(--color-text-muted);
  opacity: 0.4;
  font-size: 0.85em;
  user-select: none;
}

/* ── Syntax highlighting ──────────────────────────────── */
.syn-key { color: #c084fc; }
.syn-str { color: #6ee7b7; }
.syn-num { color: #fbbf24; }
.syn-comment { color: var(--color-text-muted); font-style: italic; }
.syn-punct { color: var(--color-text-secondary); }
.syn-method { color: #60a5fa; }
[data-theme="light"] .syn-key { color: #7c3aed; }
[data-theme="light"] .syn-str { color: #059669; }
[data-theme="light"] .syn-num { color: #d97706; }
[data-theme="light"] .syn-method { color: #2563eb; }

/* ── Scroll reveal ────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 900px) {
  .features__grid { grid-template-columns: repeat(2, 1fr); }
  .arch__intro { grid-template-columns: 1fr; }
  .arch__diagram { flex-direction: column; gap: var(--space-md); }
  .arch__arrow svg { transform: rotate(90deg); }
  .arch__flavors-grid { grid-template-columns: 1fr; }
  .how__steps-visual { flex-direction: column; align-items: center; }
  .how__connector svg { transform: rotate(90deg); }
  .pain-bridge__grid { grid-template-columns: 1fr; gap: var(--space-lg); }
  .flow-sim__timeline { overflow-x: auto; gap: var(--space-xs); justify-content: flex-start; padding-bottom: var(--space-xs); }
  .flow-sim__step-label { display: none; }
  .scenarios__table { font-size: var(--font-size-xs); }
  .scenarios__table td, .scenarios__table th { padding: var(--space-sm); }
}

@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__actions { display: none; }
  .nav__mobile-toggle { display: flex; }

  /* Mobile nav overlay — opened via JS toggle */
  .nav__links.nav__links--open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-xl) var(--space-lg);
    gap: var(--space-md);
    z-index: 999;
    animation: navSlideDown 0.25s ease;
    box-shadow: var(--shadow-md);
  }
  [data-theme="light"] .nav__links.nav__links--open {
    background: var(--color-surface);
  }
  .nav__links.nav__links--open .nav__link {
    font-size: var(--font-size-base);
    padding: var(--space-sm) 0;
  }
  .nav__links.nav__links--open .nav__dropdown {
    width: 100%;
  }
  .nav__links.nav__links--open .nav__dropdown-trigger {
    width: 100%;
    justify-content: space-between;
    font-size: var(--font-size-base);
    padding: var(--space-sm) 0;
  }
  .nav__links.nav__links--open .nav__dropdown-menu {
    position: static;
    min-width: 0;
    margin-top: var(--space-xs);
    box-shadow: none;
    border-color: var(--color-border-subtle);
  }

  /* Show action buttons inside the mobile menu */
  .nav__actions.nav__actions--open {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding: var(--space-lg) var(--space-lg) var(--space-xl);
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 998;
  }
  .features__grid { grid-template-columns: 1fr; }
  .hero__title { font-size: var(--font-size-3xl); }
  .hero__metrics { gap: var(--space-md); }
  .hero__metric-sep { display: none; }
  .footer__inner { flex-direction: column; gap: var(--space-md); text-align: center; }
  .footer__links { flex-wrap: wrap; justify-content: center; }
  .verticals__tabs { gap: var(--space-xs); }
  .cta__actions { flex-direction: column; align-items: center; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .flow-sim__detail-inner { animation: none; }
  .scroll-progress { transition: none; }
  .flow-sim__progress-fill { transition: none; }
  .permit-dec__panels { opacity: 1; transform: none; transition: none; }
  .verticals__panel { animation: none; }
  .nav__links.nav__links--open { animation: none; }
}