/* ============================================================
   Vextra Landing Styles
   ============================================================
   Design tokens are imported from css/tokens.css in index.html.
   ============================================================ */

/* ============================================================
   Base
   ============================================================ */

* {
  border-color: var(--border);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--background);
  color: var(--text-primary);
  transition: background-color var(--transition-slow), color var(--transition-slow);
}

::selection {
  background-color: rgba(0, 225, 255, 0.25);
  color: var(--text-primary);
}

/* ============================================================
   Utility surface & color helpers
   ============================================================ */

.bg-background { background-color: var(--background); }
.bg-surface { background-color: var(--surface); }
.bg-surface-elevated { background-color: var(--surface-elevated); }
.bg-surface-strong { background-color: var(--surface-strong); }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }

.border-theme { border-color: var(--border); }
.border-theme-subtle { border-color: var(--border-subtle); }
.border-theme-accent { border-color: var(--border-accent); }

.shadow-theme { box-shadow: var(--shadow); }
.shadow-theme-lg { box-shadow: var(--shadow-lg); }

/* ============================================================
   Brand accents
   ============================================================ */

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

.bg-gradient-brand {
  background: var(--accent-gradient);
}

.glow-cyan {
  box-shadow: var(--shadow-glow-cyan);
}

.glow-violet {
  box-shadow: var(--shadow-glow-violet);
}

/* ============================================================
   Buttons
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #0B1120;
  box-shadow: 0 0 0 rgba(0, 225, 255, 0);
  border: 1px solid transparent;
}

.btn-primary:hover {
  box-shadow: var(--shadow-glow-cyan), var(--shadow-glow-violet);
  transform: translateY(-1px);
}

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

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background-color: var(--surface-elevated);
  border-color: var(--text-muted);
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  color: var(--text-primary);
}

/* ============================================================
   Header
   ============================================================ */

#header {
  background-color: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color var(--transition-slow), border-color var(--transition-slow);
}

#header.scrolled {
  background-color: var(--header-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-color: var(--border);
}

/* ============================================================
   Theme toggle
   ============================================================ */

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  background-color: transparent;
  border: 1px solid transparent;
  transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base);
}

.theme-toggle:hover {
  color: var(--text-primary);
  background-color: var(--surface-elevated);
  border-color: var(--border);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 2px;
}

.theme-toggle svg {
  width: 1.125rem;
  height: 1.125rem;
}

/* ============================================================
   Navigation links
   ============================================================ */

.nav-link {
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-primary);
}

/* ============================================================
   Mobile menu
   ============================================================ */

#mobile-menu {
  background-color: var(--surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border);
}

@supports (background-color: color-mix(in srgb, var(--surface) 98%, transparent)) {
  #mobile-menu {
    background-color: color-mix(in srgb, var(--surface) 98%, transparent);
  }
}

#mobile-menu.open {
  display: block !important;
  animation: fadeIn 0.2s ease-out;
}

/* ============================================================
   Forms
   ============================================================ */

.form-input {
  width: 100%;
  padding: 0.875rem 1rem;
  background-color: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9375rem;
  font-weight: 300;
  transition: all var(--transition-base);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-cyan);
  background-color: var(--surface);
  box-shadow: 0 0 0 3px rgba(0, 225, 255, 0.08);
}

/* ============================================================
   Cards & surfaces
   ============================================================ */

.card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.card-hover:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

/* ============================================================
   Mockup / demo UI
   ============================================================ */

.mockup-window {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transition: background-color var(--transition-slow), border-color var(--transition-slow), box-shadow var(--transition-slow);
}

.mockup-header {
  height: 3rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 1rem;
  gap: 0.5rem;
}

.mockup-dot {
  width: 0.625rem;
  height: 0.625rem;
  border-radius: 9999px;
  background-color: var(--surface-strong);
}

.message-user {
  background-color: var(--surface-elevated);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: var(--radius-lg);
  border-bottom-left-radius: 0.25rem;
  transition: background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base);
}

.message-vestra {
  background-color: var(--surface-elevated);
  border: 1px solid var(--border-accent);
  color: var(--text-primary);
  border-radius: var(--radius-lg);
  border-bottom-right-radius: 0.25rem;
  transition: background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base);
}

@supports (background-color: color-mix(in srgb, var(--surface-elevated) 60%, transparent)) {
  .message-vestra {
    background-color: color-mix(in srgb, var(--surface-elevated) 60%, transparent);
  }
}

/* ============================================================
   Adaptive intelligence diagram
   ============================================================ */

.adaptive-diagram {
  position: relative;
  width: 100%;
}

.adaptive-diagram-desktop {
  position: relative;
  height: 340px;
  max-width: 420px;
  margin: 0 auto;
}

.adaptive-diagram-mobile {
  position: relative;
  height: 480px;
  max-width: 280px;
  margin: 0 auto;
}

.adaptive-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.adaptive-line {
  fill: none;
  stroke: var(--border);
  stroke-width: 1;
  stroke-linecap: round;
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  transition: stroke var(--transition-base), opacity var(--transition-base), stroke-dashoffset 800ms ease;
}

.adaptive-diagram.is-phase-1 .line-query,
.adaptive-diagram.is-phase-2 .line-query,
.adaptive-diagram.is-phase-3 .line-query,
.adaptive-diagram.is-phase-4 .line-query,
.adaptive-diagram.is-phase-5 .line-query,
.adaptive-diagram.is-phase-6 .line-query,
.adaptive-diagram.is-phase-7 .line-query {
  stroke-dashoffset: 0;
}

.adaptive-diagram.is-phase-2 .line-split,
.adaptive-diagram.is-phase-3 .line-split,
.adaptive-diagram.is-phase-4 .line-split,
.adaptive-diagram.is-phase-5 .line-split,
.adaptive-diagram.is-phase-6 .line-split,
.adaptive-diagram.is-phase-7 .line-split {
  stroke-dashoffset: 0;
}

.adaptive-diagram.is-phase-3 .line-to-simple,
.adaptive-diagram.is-phase-3 .line-to-advanced,
.adaptive-diagram.is-phase-3 .line-to-max,
.adaptive-diagram.is-phase-4 .line-to-simple,
.adaptive-diagram.is-phase-4 .line-to-advanced,
.adaptive-diagram.is-phase-4 .line-to-max,
.adaptive-diagram.is-phase-5 .line-to-simple,
.adaptive-diagram.is-phase-5 .line-to-advanced,
.adaptive-diagram.is-phase-5 .line-to-max,
.adaptive-diagram.is-phase-6 .line-to-simple,
.adaptive-diagram.is-phase-6 .line-to-advanced,
.adaptive-diagram.is-phase-6 .line-to-max,
.adaptive-diagram.is-phase-7 .line-to-simple,
.adaptive-diagram.is-phase-7 .line-to-advanced,
.adaptive-diagram.is-phase-7 .line-to-max {
  stroke-dashoffset: 0;
}

.adaptive-diagram.is-phase-5 .line-answer,
.adaptive-diagram.is-phase-6 .line-answer,
.adaptive-diagram.is-phase-7 .line-answer {
  stroke-dashoffset: 0;
}

/* Selected routes highlighting */
.adaptive-diagram[data-selected="simple"].is-phase-4 .line-to-simple,
.adaptive-diagram[data-selected="simple"].is-phase-5 .line-to-simple,
.adaptive-diagram[data-selected="simple"].is-phase-6 .line-to-simple,
.adaptive-diagram[data-selected="simple"].is-phase-7 .line-to-simple,
.adaptive-diagram[data-selected="simple"].is-phase-4 .line-answer,
.adaptive-diagram[data-selected="simple"].is-phase-5 .line-answer,
.adaptive-diagram[data-selected="simple"].is-phase-6 .line-answer,
.adaptive-diagram[data-selected="simple"].is-phase-7 .line-answer {
  stroke: url(#adaptive-gradient);
  opacity: 1;
}

.adaptive-diagram[data-selected="advanced"].is-phase-4 .line-to-advanced,
.adaptive-diagram[data-selected="advanced"].is-phase-5 .line-to-advanced,
.adaptive-diagram[data-selected="advanced"].is-phase-6 .line-to-advanced,
.adaptive-diagram[data-selected="advanced"].is-phase-7 .line-to-advanced,
.adaptive-diagram[data-selected="advanced"].is-phase-4 .line-answer,
.adaptive-diagram[data-selected="advanced"].is-phase-5 .line-answer,
.adaptive-diagram[data-selected="advanced"].is-phase-6 .line-answer,
.adaptive-diagram[data-selected="advanced"].is-phase-7 .line-answer {
  stroke: url(#adaptive-gradient);
  opacity: 1;
}

.adaptive-diagram[data-selected="max"].is-phase-4 .line-to-max,
.adaptive-diagram[data-selected="max"].is-phase-5 .line-to-max,
.adaptive-diagram[data-selected="max"].is-phase-6 .line-to-max,
.adaptive-diagram[data-selected="max"].is-phase-7 .line-to-max,
.adaptive-diagram[data-selected="max"].is-phase-4 .line-answer,
.adaptive-diagram[data-selected="max"].is-phase-5 .line-answer,
.adaptive-diagram[data-selected="max"].is-phase-6 .line-answer,
.adaptive-diagram[data-selected="max"].is-phase-7 .line-answer {
  stroke: url(#adaptive-gradient);
  opacity: 1;
}

/* Dim non-selected routes in phase 4+ */
.adaptive-diagram.is-phase-4 .line-to-simple,
.adaptive-diagram.is-phase-4 .line-to-advanced,
.adaptive-diagram.is-phase-4 .line-to-max,
.adaptive-diagram.is-phase-5 .line-to-simple,
.adaptive-diagram.is-phase-5 .line-to-advanced,
.adaptive-diagram.is-phase-5 .line-to-max,
.adaptive-diagram.is-phase-6 .line-to-simple,
.adaptive-diagram.is-phase-6 .line-to-advanced,
.adaptive-diagram.is-phase-6 .line-to-max,
.adaptive-diagram.is-phase-7 .line-to-simple,
.adaptive-diagram.is-phase-7 .line-to-advanced,
.adaptive-diagram.is-phase-7 .line-to-max {
  opacity: 0.35;
}

.adaptive-diagram[data-selected="simple"].is-phase-4 .line-to-simple,
.adaptive-diagram[data-selected="advanced"].is-phase-4 .line-to-advanced,
.adaptive-diagram[data-selected="max"].is-phase-4 .line-to-max,
.adaptive-diagram[data-selected="simple"].is-phase-5 .line-to-simple,
.adaptive-diagram[data-selected="advanced"].is-phase-5 .line-to-advanced,
.adaptive-diagram[data-selected="max"].is-phase-5 .line-to-max,
.adaptive-diagram[data-selected="simple"].is-phase-6 .line-to-simple,
.adaptive-diagram[data-selected="advanced"].is-phase-6 .line-to-advanced,
.adaptive-diagram[data-selected="max"].is-phase-6 .line-to-max,
.adaptive-diagram[data-selected="simple"].is-phase-7 .line-to-simple,
.adaptive-diagram[data-selected="advanced"].is-phase-7 .line-to-advanced,
.adaptive-diagram[data-selected="max"].is-phase-7 .line-to-max {
  opacity: 1;
}

/* Pulse dots */
.adaptive-pulse {
  fill: var(--accent-cyan);
  opacity: 0;
  filter: drop-shadow(0 0 4px var(--accent-cyan));
}

@keyframes travelQuery {
  0% { transform: translateY(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(60px); opacity: 0; }
}

@keyframes travelSplit {
  0% { transform: translateY(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(34px); opacity: 0; }
}

@keyframes travelToSimple {
  0% { transform: translate(0, 0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translate(-110px, 38px); opacity: 0; }
}

@keyframes travelToAdvanced {
  0% { transform: translateY(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(38px); opacity: 0; }
}

@keyframes travelToMax {
  0% { transform: translate(0, 0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translate(110px, 38px); opacity: 0; }
}

@keyframes travelAnswer {
  0% { transform: translateY(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(36px); opacity: 0; }
}

.adaptive-diagram.is-phase-1 .pulse-query {
  animation: travelQuery 900ms ease forwards;
}

.adaptive-diagram[data-selected="simple"].is-phase-4 .pulse-select-simple,
.adaptive-diagram[data-selected="advanced"].is-phase-4 .pulse-select-advanced,
.adaptive-diagram[data-selected="max"].is-phase-4 .pulse-select-max {
  animation: travelToSimple 900ms ease forwards;
}

.adaptive-diagram[data-selected="advanced"].is-phase-4 .pulse-select-advanced {
  animation-name: travelToAdvanced;
}

.adaptive-diagram[data-selected="max"].is-phase-4 .pulse-select-max {
  animation-name: travelToMax;
}

.adaptive-diagram.is-phase-5 .pulse-answer {
  animation: travelAnswer 900ms ease forwards;
}

/* Query bubble */
.adaptive-query {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.625rem 1rem;
  background-color: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--text-primary);
  white-space: nowrap;
  opacity: 0;
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.adaptive-diagram.is-phase-1 .adaptive-query,
.adaptive-diagram.is-phase-2 .adaptive-query,
.adaptive-diagram.is-phase-3 .adaptive-query,
.adaptive-diagram.is-phase-4 .adaptive-query,
.adaptive-diagram.is-phase-5 .adaptive-query,
.adaptive-diagram.is-phase-6 .adaptive-query,
.adaptive-diagram.is-phase-7 .adaptive-query {
  opacity: 1;
}

/* Vextra node */
.adaptive-node.node-vextra {
  position: absolute;
  top: 112px;
  left: 50%;
  transform: translateX(-50%);
  width: 7.5rem;
  padding: 0.75rem 1rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  opacity: 0;
  transition: opacity var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.adaptive-diagram.is-phase-1 .node-vextra,
.adaptive-diagram.is-phase-2 .node-vextra,
.adaptive-diagram.is-phase-3 .node-vextra,
.adaptive-diagram.is-phase-4 .node-vextra,
.adaptive-diagram.is-phase-5 .node-vextra,
.adaptive-diagram.is-phase-6 .node-vextra,
.adaptive-diagram.is-phase-7 .node-vextra {
  opacity: 1;
}

.adaptive-diagram.is-phase-2 .node-vextra,
.adaptive-diagram.is-phase-3 .node-vextra {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 1px var(--accent-cyan), var(--shadow-glow-cyan);
}

.node-vextra-label {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-primary);
}

.node-vextra-status {
  font-size: 0.6875rem;
  font-weight: 400;
  color: var(--text-secondary);
}

/* Signals */
.adaptive-signals {
  position: absolute;
  top: 168px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.adaptive-signal {
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.25rem 0.5rem;
  background-color: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: 9999px;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}

.adaptive-diagram.is-phase-2 .signal-context,
.adaptive-diagram.is-phase-3 .signal-context,
.adaptive-diagram.is-phase-4 .signal-context,
.adaptive-diagram.is-phase-5 .signal-context,
.adaptive-diagram.is-phase-6 .signal-context,
.adaptive-diagram.is-phase-7 .signal-context {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0ms;
}

.adaptive-diagram.is-phase-2 .signal-evidence,
.adaptive-diagram.is-phase-3 .signal-evidence,
.adaptive-diagram.is-phase-4 .signal-evidence,
.adaptive-diagram.is-phase-5 .signal-evidence,
.adaptive-diagram.is-phase-6 .signal-evidence,
.adaptive-diagram.is-phase-7 .signal-evidence {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 120ms;
}

.adaptive-diagram.is-phase-2 .signal-complexity,
.adaptive-diagram.is-phase-3 .signal-complexity,
.adaptive-diagram.is-phase-4 .signal-complexity,
.adaptive-diagram.is-phase-5 .signal-complexity,
.adaptive-diagram.is-phase-6 .signal-complexity,
.adaptive-diagram.is-phase-7 .signal-complexity {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 240ms;
}

/* Level nodes */
.adaptive-level {
  position: absolute;
  top: 224px;
  width: 5.5rem;
  padding: 0.625rem 0.5rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-align: center;
  cursor: default;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity var(--transition-base), transform var(--transition-base), border-color var(--transition-base), color var(--transition-base), box-shadow var(--transition-base);
}

.adaptive-level:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 2px;
}

.adaptive-level.level-simple { left: 58px; }
.adaptive-level.level-advanced { left: 50%; transform: translateX(-50%) translateY(4px); }
.adaptive-level.level-max { right: 58px; }

.adaptive-diagram.is-phase-3 .level-simple,
.adaptive-diagram.is-phase-3 .level-advanced,
.adaptive-diagram.is-phase-3 .level-max,
.adaptive-diagram.is-phase-4 .level-simple,
.adaptive-diagram.is-phase-4 .level-advanced,
.adaptive-diagram.is-phase-4 .level-max,
.adaptive-diagram.is-phase-5 .level-simple,
.adaptive-diagram.is-phase-5 .level-advanced,
.adaptive-diagram.is-phase-5 .level-max,
.adaptive-diagram.is-phase-6 .level-simple,
.adaptive-diagram.is-phase-6 .level-advanced,
.adaptive-diagram.is-phase-6 .level-max,
.adaptive-diagram.is-phase-7 .level-simple,
.adaptive-diagram.is-phase-7 .level-advanced,
.adaptive-diagram.is-phase-7 .level-max {
  opacity: 1;
  transform: translateY(0);
}

.adaptive-diagram.is-phase-3 .level-advanced,
.adaptive-diagram.is-phase-4 .level-advanced,
.adaptive-diagram.is-phase-5 .level-advanced,
.adaptive-diagram.is-phase-6 .level-advanced,
.adaptive-diagram.is-phase-7 .level-advanced {
  transform: translateX(-50%) translateY(0);
}

/* Phase 3 brief highlight all */
.adaptive-diagram.is-phase-3 .level-simple,
.adaptive-diagram.is-phase-3 .level-advanced,
.adaptive-diagram.is-phase-3 .level-max {
  border-color: var(--border-accent);
  color: var(--text-primary);
}

/* Phase 4+ selected highlight */
.adaptive-diagram[data-selected="simple"].is-phase-4 .level-simple,
.adaptive-diagram[data-selected="simple"].is-phase-5 .level-simple,
.adaptive-diagram[data-selected="simple"].is-phase-6 .level-simple,
.adaptive-diagram[data-selected="simple"].is-phase-7 .level-simple,
.adaptive-diagram[data-selected="advanced"].is-phase-4 .level-advanced,
.adaptive-diagram[data-selected="advanced"].is-phase-5 .level-advanced,
.adaptive-diagram[data-selected="advanced"].is-phase-6 .level-advanced,
.adaptive-diagram[data-selected="advanced"].is-phase-7 .level-advanced,
.adaptive-diagram[data-selected="max"].is-phase-4 .level-max,
.adaptive-diagram[data-selected="max"].is-phase-5 .level-max,
.adaptive-diagram[data-selected="max"].is-phase-6 .level-max,
.adaptive-diagram[data-selected="max"].is-phase-7 .level-max {
  border-color: var(--accent-cyan);
  color: var(--text-primary);
  box-shadow: var(--shadow-glow-cyan);
}

.adaptive-diagram[data-selected="simple"].is-phase-4 .level-advanced,
.adaptive-diagram[data-selected="simple"].is-phase-4 .level-max,
.adaptive-diagram[data-selected="advanced"].is-phase-4 .level-simple,
.adaptive-diagram[data-selected="advanced"].is-phase-4 .level-max,
.adaptive-diagram[data-selected="max"].is-phase-4 .level-simple,
.adaptive-diagram[data-selected="max"].is-phase-4 .level-advanced,
.adaptive-diagram[data-selected="simple"].is-phase-5 .level-advanced,
.adaptive-diagram[data-selected="simple"].is-phase-5 .level-max,
.adaptive-diagram[data-selected="advanced"].is-phase-5 .level-simple,
.adaptive-diagram[data-selected="advanced"].is-phase-5 .level-max,
.adaptive-diagram[data-selected="max"].is-phase-5 .level-simple,
.adaptive-diagram[data-selected="max"].is-phase-5 .level-advanced,
.adaptive-diagram[data-selected="simple"].is-phase-6 .level-advanced,
.adaptive-diagram[data-selected="simple"].is-phase-6 .level-max,
.adaptive-diagram[data-selected="advanced"].is-phase-6 .level-simple,
.adaptive-diagram[data-selected="advanced"].is-phase-6 .level-max,
.adaptive-diagram[data-selected="max"].is-phase-6 .level-simple,
.adaptive-diagram[data-selected="max"].is-phase-6 .level-advanced,
.adaptive-diagram[data-selected="simple"].is-phase-7 .level-advanced,
.adaptive-diagram[data-selected="simple"].is-phase-7 .level-max,
.adaptive-diagram[data-selected="advanced"].is-phase-7 .level-simple,
.adaptive-diagram[data-selected="advanced"].is-phase-7 .level-max,
.adaptive-diagram[data-selected="max"].is-phase-7 .level-simple,
.adaptive-diagram[data-selected="max"].is-phase-7 .level-advanced {
  opacity: 0.45;
}

/* Tooltips */
.adaptive-tooltip {
  position: absolute;
  bottom: calc(100% + 0.5rem);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  width: 12rem;
  padding: 0.5rem 0.75rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-secondary);
  text-align: center;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  z-index: 10;
}

.adaptive-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 5px;
  border-style: solid;
  border-color: var(--border) transparent transparent transparent;
}

.adaptive-level:hover .adaptive-tooltip,
.adaptive-level:focus-visible .adaptive-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* Answer */
.adaptive-answer {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.625rem 1rem;
  background-color: var(--surface-elevated);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.125rem;
  opacity: 0;
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.adaptive-diagram.is-phase-5 .adaptive-answer,
.adaptive-diagram.is-phase-6 .adaptive-answer,
.adaptive-diagram.is-phase-7 .adaptive-answer {
  opacity: 1;
}

.answer-value {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

.answer-source {
  font-size: 0.6875rem;
  font-weight: 400;
  color: var(--text-secondary);
}

/* Mobile adaptive diagram overrides */
.adaptive-diagram-mobile .adaptive-query {
  font-size: 0.75rem;
}

.adaptive-diagram-mobile .adaptive-node.node-vextra {
  top: 104px;
}

.adaptive-diagram-mobile .adaptive-signals {
  top: 158px;
  flex-direction: column;
  gap: 0.375rem;
}

.adaptive-diagram-mobile .adaptive-levels-row {
  position: absolute;
  top: 240px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
}

.adaptive-diagram-mobile .adaptive-level {
  position: static;
  width: auto;
  flex: 1;
  min-width: 4.5rem;
  opacity: 0;
  transform: translateY(4px);
}

.adaptive-diagram-mobile .adaptive-level.level-advanced {
  transform: translateY(4px);
}

.adaptive-diagram.is-phase-3 .adaptive-diagram-mobile .level-simple,
.adaptive-diagram.is-phase-3 .adaptive-diagram-mobile .level-advanced,
.adaptive-diagram.is-phase-3 .adaptive-diagram-mobile .level-max,
.adaptive-diagram.is-phase-4 .adaptive-diagram-mobile .level-simple,
.adaptive-diagram.is-phase-4 .adaptive-diagram-mobile .level-advanced,
.adaptive-diagram.is-phase-4 .adaptive-diagram-mobile .level-max,
.adaptive-diagram.is-phase-5 .adaptive-diagram-mobile .level-simple,
.adaptive-diagram.is-phase-5 .adaptive-diagram-mobile .level-advanced,
.adaptive-diagram.is-phase-5 .adaptive-diagram-mobile .level-max,
.adaptive-diagram.is-phase-6 .adaptive-diagram-mobile .level-simple,
.adaptive-diagram.is-phase-6 .adaptive-diagram-mobile .level-advanced,
.adaptive-diagram.is-phase-6 .adaptive-diagram-mobile .level-max,
.adaptive-diagram.is-phase-7 .adaptive-diagram-mobile .level-simple,
.adaptive-diagram.is-phase-7 .adaptive-diagram-mobile .level-advanced,
.adaptive-diagram.is-phase-7 .adaptive-diagram-mobile .level-max {
  opacity: 1;
  transform: translateY(0);
}

.adaptive-diagram-mobile .adaptive-answer {
  bottom: 8px;
}

/* Adjust mobile pulse animations */
@keyframes travelQueryMobile {
  0% { transform: translateY(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(52px); opacity: 0; }
}

@keyframes travelSplitMobile {
  0% { transform: translateY(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(48px); opacity: 0; }
}

@keyframes travelToSimpleMobile {
  0% { transform: translate(0, 0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translate(-80px, 48px); opacity: 0; }
}

@keyframes travelToAdvancedMobile {
  0% { transform: translateY(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(48px); opacity: 0; }
}

@keyframes travelToMaxMobile {
  0% { transform: translate(0, 0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translate(80px, 48px); opacity: 0; }
}

@keyframes travelAnswerMobile {
  0% { transform: translateY(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(52px); opacity: 0; }
}

.adaptive-diagram.is-phase-1 .adaptive-diagram-mobile .pulse-query {
  animation: travelQueryMobile 900ms ease forwards;
}

.adaptive-diagram[data-selected="simple"].is-phase-4 .adaptive-diagram-mobile .pulse-select-simple,
.adaptive-diagram[data-selected="advanced"].is-phase-4 .adaptive-diagram-mobile .pulse-select-advanced,
.adaptive-diagram[data-selected="max"].is-phase-4 .adaptive-diagram-mobile .pulse-select-max {
  animation: travelToSimpleMobile 900ms ease forwards;
}

.adaptive-diagram[data-selected="advanced"].is-phase-4 .adaptive-diagram-mobile .pulse-select-advanced {
  animation-name: travelToAdvancedMobile;
}

.adaptive-diagram[data-selected="max"].is-phase-4 .adaptive-diagram-mobile .pulse-select-max {
  animation-name: travelToMaxMobile;
}

.adaptive-diagram.is-phase-5 .adaptive-diagram-mobile .pulse-answer {
  animation: travelAnswerMobile 900ms ease forwards;
}

/* ============================================================
   Sources → Answer diagram
   ============================================================ */

.sources-diagram {
  position: relative;
  width: 100%;
}

.sources-diagram-desktop {
  position: relative;
  height: 280px;
  max-width: 560px;
  margin: 0 auto;
}

.sources-diagram-mobile {
  position: relative;
  height: 520px;
  max-width: 280px;
  margin: 0 auto;
}

.sources-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.source-line {
  fill: none;
  stroke: var(--border);
  stroke-width: 1;
  stroke-linecap: round;
  stroke-dasharray: 200;
  stroke-dashoffset: 200;
  transition: stroke var(--transition-base), opacity var(--transition-base), stroke-dashoffset 800ms ease;
}

.sources-diagram.is-phase-1 .source-line,
.sources-diagram.is-phase-2 .source-line,
.sources-diagram.is-phase-3 .source-line,
.sources-diagram.is-phase-4 .source-line,
.sources-diagram.is-phase-5 .source-line,
.sources-diagram.is-phase-6 .source-line,
.sources-diagram.is-phase-7 .source-line {
  stroke-dashoffset: 0;
}

.sources-diagram.is-phase-4 .source-line,
.sources-diagram.is-phase-5 .source-line,
.sources-diagram.is-phase-6 .source-line,
.sources-diagram.is-phase-7 .source-line {
  stroke: url(#sources-gradient);
}

.sources-diagram.is-phase-5 .source-line.line-answer,
.sources-diagram.is-phase-6 .source-line.line-answer,
.sources-diagram.is-phase-7 .source-line.line-answer {
  stroke: url(#sources-gradient);
}

/* Hover highlight by source */
.sources-diagram:has(.source-node[data-source="documents"]:hover) .line-documents,
.sources-diagram:has(.source-node[data-source="documents"]:focus-visible) .line-documents,
.sources-diagram:has(.source-node[data-source="contracts"]:hover) .line-contracts,
.sources-diagram:has(.source-node[data-source="contracts"]:focus-visible) .line-contracts,
.sources-diagram:has(.source-node[data-source="records"]:hover) .line-records,
.sources-diagram:has(.source-node[data-source="records"]:focus-visible) .line-records,
.sources-diagram:has(.source-node[data-source="policies"]:hover) .line-policies,
.sources-diagram:has(.source-node[data-source="policies"]:focus-visible) .line-policies {
  stroke: url(#sources-gradient);
  opacity: 1;
  stroke-width: 1.5;
}

.sources-diagram:has(.source-node[data-source="documents"]:hover) .source-line:not(.line-documents),
.sources-diagram:has(.source-node[data-source="documents"]:focus-visible) .source-line:not(.line-documents),
.sources-diagram:has(.source-node[data-source="contracts"]:hover) .source-line:not(.line-contracts),
.sources-diagram:has(.source-node[data-source="contracts"]:focus-visible) .source-line:not(.line-contracts),
.sources-diagram:has(.source-node[data-source="records"]:hover) .source-line:not(.line-records),
.sources-diagram:has(.source-node[data-source="records"]:focus-visible) .source-line:not(.line-records),
.sources-diagram:has(.source-node[data-source="policies"]:hover) .source-line:not(.line-policies),
.sources-diagram:has(.source-node[data-source="policies"]:focus-visible) .source-line:not(.line-policies) {
  opacity: 0.25;
}

/* Fallback for browsers without :has() support */
.sources-diagram.is-hovering-documents .line-documents,
.sources-diagram.is-hovering-contracts .line-contracts,
.sources-diagram.is-hovering-records .line-records,
.sources-diagram.is-hovering-policies .line-policies {
  stroke: url(#sources-gradient);
  opacity: 1;
  stroke-width: 1.5;
}

.sources-diagram.is-hovering-documents .source-line:not(.line-documents),
.sources-diagram.is-hovering-contracts .source-line:not(.line-contracts),
.sources-diagram.is-hovering-records .source-line:not(.line-records),
.sources-diagram.is-hovering-policies .source-line:not(.line-policies) {
  opacity: 0.25;
}

.source-pulse {
  fill: var(--accent-cyan);
  opacity: 0;
  filter: drop-shadow(0 0 4px var(--accent-cyan));
}

@keyframes travelDocuments {
  0% { transform: translate(0, 0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translate(164px, 86px); opacity: 0; }
}

@keyframes travelContracts {
  0% { transform: translate(0, 0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translate(164px, 32px); opacity: 0; }
}

@keyframes travelRecords {
  0% { transform: translate(0, 0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translate(164px, -32px); opacity: 0; }
}

@keyframes travelPolicies {
  0% { transform: translate(0, 0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translate(164px, -86px); opacity: 0; }
}

@keyframes travelAnswerDesktop {
  0% { transform: translateX(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateX(160px); opacity: 0; }
}

.sources-diagram.is-phase-2 .pulse-documents {
  animation: travelDocuments 1100ms ease forwards;
}

.sources-diagram.is-phase-2 .pulse-contracts {
  animation: travelContracts 1100ms ease 200ms forwards;
}

.sources-diagram.is-phase-2 .pulse-records {
  animation: travelRecords 1100ms ease 400ms forwards;
}

.sources-diagram.is-phase-2 .pulse-policies {
  animation: travelPolicies 1100ms ease 600ms forwards;
}

.sources-diagram.is-phase-5 .pulse-answer {
  animation: travelAnswerDesktop 900ms ease forwards;
}

/* Source nodes */
.sources-column {
  position: absolute;
  left: calc(96 / 520 * 100%);
  top: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 0.5rem 0;
  transform: translateX(-50%);
}

.source-node {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.625rem 1rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--text-secondary);
  text-align: left;
  cursor: default;
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity var(--transition-base), transform var(--transition-base), border-color var(--transition-base), color var(--transition-base);
}

.source-node:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 2px;
}

.source-icon {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

.sources-diagram.is-phase-1 .source-documents,
.sources-diagram.is-phase-2 .source-documents,
.sources-diagram.is-phase-3 .source-documents,
.sources-diagram.is-phase-4 .source-documents,
.sources-diagram.is-phase-5 .source-documents,
.sources-diagram.is-phase-6 .source-documents,
.sources-diagram.is-phase-7 .source-documents {
  opacity: 1;
  transform: translateX(0);
  transition-delay: 0ms;
}

.sources-diagram.is-phase-1 .source-contracts,
.sources-diagram.is-phase-2 .source-contracts,
.sources-diagram.is-phase-3 .source-contracts,
.sources-diagram.is-phase-4 .source-contracts,
.sources-diagram.is-phase-5 .source-contracts,
.sources-diagram.is-phase-6 .source-contracts,
.sources-diagram.is-phase-7 .source-contracts {
  opacity: 1;
  transform: translateX(0);
  transition-delay: 120ms;
}

.sources-diagram.is-phase-1 .source-records,
.sources-diagram.is-phase-2 .source-records,
.sources-diagram.is-phase-3 .source-records,
.sources-diagram.is-phase-4 .source-records,
.sources-diagram.is-phase-5 .source-records,
.sources-diagram.is-phase-6 .source-records,
.sources-diagram.is-phase-7 .source-records {
  opacity: 1;
  transform: translateX(0);
  transition-delay: 240ms;
}

.sources-diagram.is-phase-1 .source-policies,
.sources-diagram.is-phase-2 .source-policies,
.sources-diagram.is-phase-3 .source-policies,
.sources-diagram.is-phase-4 .source-policies,
.sources-diagram.is-phase-5 .source-policies,
.sources-diagram.is-phase-6 .source-policies,
.sources-diagram.is-phase-7 .source-policies {
  opacity: 1;
  transform: translateX(0);
  transition-delay: 360ms;
}

.source-node:hover,
.source-node:focus-visible {
  border-color: var(--border-accent);
  color: var(--text-primary);
}

/* Engine */
.sources-engine {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.sources-diagram-desktop .sources-engine {
  left: calc(260 / 520 * 100%);
}

.sources-diagram.is-phase-1 .sources-engine,
.sources-diagram.is-phase-2 .sources-engine,
.sources-diagram.is-phase-3 .sources-engine,
.sources-diagram.is-phase-4 .sources-engine,
.sources-diagram.is-phase-5 .sources-engine,
.sources-diagram.is-phase-6 .sources-engine,
.sources-diagram.is-phase-7 .sources-engine {
  opacity: 1;
}

.engine-icon {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: var(--radius-lg);
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.sources-diagram.is-phase-3 .engine-icon,
.sources-diagram.is-phase-4 .engine-icon {
  transform: scale(1.05);
  box-shadow: var(--shadow-glow-cyan), var(--shadow-glow-violet);
}

.engine-label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-primary);
}

.engine-words {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 160px;
  height: 120px;
  pointer-events: none;
}

.engine-word {
  position: absolute;
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.25rem 0.5rem;
  background-color: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: 9999px;
  opacity: 0;
  transform: scale(0.9);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.word-comprehend { top: 0; left: 50%; transform: translateX(-50%) scale(0.9); }
.word-connect { bottom: 10px; left: 0; transform: scale(0.9); }
.word-verify { bottom: 10px; right: 0; transform: scale(0.9); }

.sources-diagram.is-phase-3 .word-comprehend,
.sources-diagram.is-phase-4 .word-comprehend,
.sources-diagram.is-phase-5 .word-comprehend,
.sources-diagram.is-phase-6 .word-comprehend,
.sources-diagram.is-phase-7 .word-comprehend {
  opacity: 1;
  transform: translateX(-50%) scale(1);
  transition-delay: 0ms;
}

.sources-diagram.is-phase-3 .word-connect,
.sources-diagram.is-phase-4 .word-connect,
.sources-diagram.is-phase-5 .word-connect,
.sources-diagram.is-phase-6 .word-connect,
.sources-diagram.is-phase-7 .word-connect {
  opacity: 1;
  transform: scale(1);
  transition-delay: 120ms;
}

.sources-diagram.is-phase-3 .word-verify,
.sources-diagram.is-phase-4 .word-verify,
.sources-diagram.is-phase-5 .word-verify,
.sources-diagram.is-phase-6 .word-verify,
.sources-diagram.is-phase-7 .word-verify {
  opacity: 1;
  transform: scale(1);
  transition-delay: 240ms;
}

/* Answer panel */
.sources-answer {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 11rem;
  padding: 1rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  opacity: 0;
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.sources-diagram-desktop .sources-answer {
  left: calc(420 / 520 * 100%);
  right: auto;
  transform: translate(-50%, -50%);
}

.sources-diagram.is-phase-5 .sources-answer,
.sources-diagram.is-phase-6 .sources-answer,
.sources-diagram.is-phase-7 .sources-answer {
  opacity: 1;
}

.answer-bar {
  height: 0.5rem;
  width: 0;
  background: var(--accent-gradient);
  border-radius: 9999px;
  transition: width 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.answer-bar-short {
  width: 0;
}

.sources-diagram.is-phase-5 .answer-bar,
.sources-diagram.is-phase-6 .answer-bar,
.sources-diagram.is-phase-7 .answer-bar {
  width: 100%;
}

.sources-diagram.is-phase-5 .answer-bar-short,
.sources-diagram.is-phase-6 .answer-bar-short,
.sources-diagram.is-phase-7 .answer-bar-short {
  width: 65%;
}

.answer-check {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent-cyan);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.sources-diagram.is-phase-6 .answer-check,
.sources-diagram.is-phase-7 .answer-check {
  opacity: 1;
  transition-delay: 400ms;
}

.answer-sources {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.sources-diagram.is-phase-6 .answer-sources,
.sources-diagram.is-phase-7 .answer-sources {
  opacity: 1;
  transition-delay: 600ms;
}

.answer-source-tag {
  font-size: 0.625rem;
  font-weight: 400;
  color: var(--text-secondary);
  padding: 0.125rem 0.375rem;
  background-color: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: 9999px;
}

/* Mobile sources diagram overrides */
.sources-diagram-mobile .sources-column {
  position: absolute;
  left: 50%;
  top: 40px;
  transform: translateX(-50%);
  width: 100%;
  max-width: 240px;
  height: 150px;
  gap: 0.5rem;
  padding: 0;
}

.sources-diagram-mobile .source-node {
  width: 100%;
}

.sources-diagram-mobile .sources-engine {
  top: 260px;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
}

.sources-diagram-mobile .engine-words {
  position: static;
  width: auto;
  height: auto;
  transform: none;
  display: flex;
  justify-content: center;
  gap: 0.375rem;
  margin-top: 0.5rem;
}

.sources-diagram-mobile .engine-word {
  position: static;
  transform: none;
}

.sources-diagram.is-phase-3 .sources-diagram-mobile .word-comprehend,
.sources-diagram.is-phase-4 .sources-diagram-mobile .word-comprehend,
.sources-diagram.is-phase-5 .sources-diagram-mobile .word-comprehend,
.sources-diagram.is-phase-6 .sources-diagram-mobile .word-comprehend,
.sources-diagram.is-phase-7 .sources-diagram-mobile .word-comprehend,
.sources-diagram.is-phase-3 .sources-diagram-mobile .word-connect,
.sources-diagram.is-phase-4 .sources-diagram-mobile .word-connect,
.sources-diagram.is-phase-5 .sources-diagram-mobile .word-connect,
.sources-diagram.is-phase-6 .sources-diagram-mobile .word-connect,
.sources-diagram.is-phase-7 .sources-diagram-mobile .word-connect,
.sources-diagram.is-phase-3 .sources-diagram-mobile .word-verify,
.sources-diagram.is-phase-4 .sources-diagram-mobile .word-verify,
.sources-diagram.is-phase-5 .sources-diagram-mobile .word-verify,
.sources-diagram.is-phase-6 .sources-diagram-mobile .word-verify,
.sources-diagram.is-phase-7 .sources-diagram-mobile .word-verify {
  transform: none;
}

.sources-diagram-mobile .sources-answer {
  top: auto;
  right: auto;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 260px;
  z-index: 1;
}

/* Mobile pulse animations */
@keyframes travelDocumentsMobile {
  0% { transform: translateY(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(220px); opacity: 0; }
}

@keyframes travelContractsMobile {
  0% { transform: translateY(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(170px); opacity: 0; }
}

@keyframes travelRecordsMobile {
  0% { transform: translateY(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(120px); opacity: 0; }
}

@keyframes travelPoliciesMobile {
  0% { transform: translateY(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(70px); opacity: 0; }
}

@keyframes travelAnswerSourceMobile {
  0% { transform: translateY(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(100px); opacity: 0; }
}

.sources-diagram.is-phase-2 .sources-diagram-mobile .pulse-documents {
  animation: travelDocumentsMobile 1100ms ease forwards;
}

.sources-diagram.is-phase-2 .sources-diagram-mobile .pulse-contracts {
  animation: travelContractsMobile 1100ms ease 200ms forwards;
}

.sources-diagram.is-phase-2 .sources-diagram-mobile .pulse-records {
  animation: travelRecordsMobile 1100ms ease 400ms forwards;
}

.sources-diagram.is-phase-2 .sources-diagram-mobile .pulse-policies {
  animation: travelPoliciesMobile 1100ms ease 600ms forwards;
}

.sources-diagram.is-phase-5 .sources-diagram-mobile .pulse-answer {
  animation: travelAnswerSourceMobile 900ms ease forwards;
}

/* ============================================================
   Modal
   ============================================================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background-color: rgba(11, 17, 32, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.modal-overlay[hidden] {
  display: none !important;
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal-panel {
  width: 100%;
  max-width: 28rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: 1.5rem;
  transform: translateY(0.5rem);
  transition: background-color var(--transition-slow), color var(--transition-slow), border-color var(--transition-slow), transform var(--transition-slow);
}

.modal-overlay.open .modal-panel {
  transform: translateY(0);
}

.modal-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  background-color: transparent;
  border: 1px solid transparent;
  transition: all var(--transition-base);
}

.modal-close:hover {
  color: var(--text-primary);
  background-color: var(--surface-elevated);
  border-color: var(--border);
}

/* ============================================================
   Hero sequential animation
   ============================================================ */

.hero-step {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
  opacity: 0;
  transform: translateY(0.25rem);
  transition: opacity var(--transition-base), transform var(--transition-base), color var(--transition-base);
}

.hero-step.active {
  opacity: 1;
  transform: translateY(0);
  color: var(--text-primary);
}

.hero-step::before {
  content: '';
  width: 0.375rem;
  height: 0.375rem;
  border-radius: 9999px;
  background-color: currentColor;
}

.hero-step.completed {
  color: var(--accent-cyan);
}

.hero-step.completed::before {
  background-color: var(--accent-cyan);
}

/* ============================================================
   Scroll reveal
   ============================================================ */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-reveal), transform var(--transition-reveal);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }

/* ============================================================
   Focus visible
   ============================================================ */

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 2px;
}

/* ============================================================
   Keyframes
   ============================================================ */

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ============================================================
   Reduced motion
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .modal-overlay {
    transition: none;
  }

  .modal-panel {
    transform: none;
  }

  /* Show final state of diagrams */
  .adaptive-diagram,
  .sources-diagram {
    --diagram-phase: 7;
  }

  .adaptive-line,
  .source-line {
    stroke-dashoffset: 0 !important;
    opacity: 1 !important;
    stroke: var(--border) !important;
  }

  .adaptive-pulse,
  .source-pulse {
    opacity: 0 !important;
  }

  .adaptive-query,
  .adaptive-node,
  .adaptive-signal,
  .adaptive-level,
  .adaptive-answer,
  .source-node,
  .sources-engine,
  .sources-answer,
  .engine-word,
  .answer-check,
  .answer-sources {
    opacity: 1 !important;
    transform: none !important;
  }

  .adaptive-level.level-advanced {
    transform: translateX(-50%) translateY(0) !important;
  }

  .adaptive-diagram-mobile .adaptive-level.level-advanced {
    transform: translateY(0) !important;
  }

  .answer-bar,
  .answer-bar-short {
    width: 100% !important;
  }

  .answer-bar-short {
    width: 65% !important;
  }
}