/* ==========================================================================
   TuskerLabs / Trunk shared design system
   Mirrors app/src/theme/colors.ts, fonts.ts, layout.ts exactly:
   flat, sharp-edged, no gradients, no border-radius except the same
   deliberate exception list the app uses (circular swatches/FAB-style dots).
   ========================================================================== */

@import url("https://fonts.googleapis.com/css2?family=Urbanist:wght@300;400;600;700&family=Iceland&display=swap");

:root {
  /* light base (default) - app/src/theme/colors.ts lightBase, Sunset accent */
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-alt: #ecedf1;
  --border: #d7dbe2;
  --text-primary: #14181f;
  --text-secondary: #5b6472;

  --accent: #ea670c;
  --accent-secondary: #dc2626;
  --accent-tertiary: #a16207;

  --running: #16a34a;
  --error: #dc2626;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 80px;

  --font-body: "Urbanist", -apple-system, sans-serif;
  --font-display: "Iceland", "Urbanist", sans-serif;
  --max-width: 1320px;
}

:root[data-theme="dark"] {
  /* dark base - app/src/theme/colors.ts darkBase, Greyscale accent */
  --bg: #0b0d10;
  --surface: #141821;
  --surface-alt: #1b212c;
  --border: #2a3140;
  --text-primary: #eaedf2;
  --text-secondary: #9aa4b2;

  --accent: #e5e5e5;
  --accent-secondary: #a3a3a3;
  --accent-tertiary: #737373;

  --running: #22c55e;
  --error: #ef4444;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition: none !important;
    animation: none !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.5;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
}

h1, h2, h3 {
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.01em;
}

p {
  margin: 0;
}

/* ---- layout ---- */

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-3xl) 0;
  border-bottom: 1px solid var(--border);
  transition: border-color 0.3s ease;
}

.section:last-of-type {
  border-bottom: none;
}

.section-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  margin-bottom: var(--space-md);
}

.section-lede {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 640px;
  line-height: 1.65;
  margin-bottom: var(--space-2xl);
}

.palette-live-accent {
  font-weight: 700;
  transition: color 0.3s ease;
}

/* ---- nav ---- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  /* Fully opaque, not translucent - a see-through blurred nav lets
     high-contrast content (the phone mockups) ghost through as it scrolls
     underneath, which reads as a rendering glitch rather than a nav bar. */
  background: var(--bg);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.nav.scrolled {
  border-bottom-color: var(--border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: 0.02em;
  color: var(--text-primary);
}

.brand-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: inherit;
}

.brand img {
  width: 30px;
  height: 30px;
  display: block;
}

.brand .sub {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-left: 2px;
  transition: color 0.2s ease;
}

.brand .sub:hover {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 600;
  transition: color 0.2s ease;
}

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

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

/* ---- buttons - one template, outlined, border=text color ---- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 11px 20px;
  border: 1px solid var(--accent);
  color: var(--accent);
  background: transparent;
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
  white-space: nowrap;
}

.btn:hover {
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  transform: translateY(-1px);
}

.btn.secondary {
  border-color: var(--accent-secondary);
  color: var(--accent-secondary);
}

.btn.secondary:hover {
  background: color-mix(in srgb, var(--accent-secondary) 14%, transparent);
}

.btn.neutral {
  border-color: var(--border);
  color: var(--text-secondary);
}

.btn.neutral:hover {
  background: var(--surface-alt);
  color: var(--text-primary);
}

.btn.small {
  padding: 7px 14px;
  font-size: 0.8rem;
}

.icon-btn {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  font-size: 1rem;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.icon-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

/* ---- cards ---- */

.card {
  border: 1px solid var(--border);
  background: var(--surface);
  padding: var(--space-lg);
  transition: border-color 0.25s ease, transform 0.25s ease, background-color 0.3s ease;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.card-top-accent {
  border-top: 3px solid var(--accent-secondary);
}

/* ---- scroll reveal ---- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* stagger children */
.reveal-group > * {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal-group.is-visible > * {
  opacity: 1;
  transform: translateY(0);
}

.reveal-group.is-visible > *:nth-child(1) { transition-delay: 0.02s; }
.reveal-group.is-visible > *:nth-child(2) { transition-delay: 0.08s; }
.reveal-group.is-visible > *:nth-child(3) { transition-delay: 0.14s; }
.reveal-group.is-visible > *:nth-child(4) { transition-delay: 0.2s; }
.reveal-group.is-visible > *:nth-child(5) { transition-delay: 0.26s; }
.reveal-group.is-visible > *:nth-child(6) { transition-delay: 0.32s; }

/* ---- hero split (text + phone shell) ---- */

.hero-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-2xl);
  align-items: center;
}

@media (max-width: 860px) {
  .hero-split {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }
}

/* ---- research timeline ---- */

.research-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 1fr);
  gap: var(--space-2xl);
  align-items: center;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.timeline-item {
  border-left: 2px solid var(--border);
  padding-left: var(--space-md);
  transition: border-color 0.25s ease;
}

.timeline-item:hover {
  border-left-color: var(--accent);
}

.timeline-year {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-weight: 700;
  color: var(--accent);
  font-size: 0.85rem;
  margin-bottom: 2px;
}

.timeline-desc {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.55;
}

@media (max-width: 800px) {
  .research-grid {
    grid-template-columns: 1fr;
  }
}

/* ---- phone shell: an 18:9 device mockup showing a simplified render of
   the app's Home screen, built from the same CSS custom properties so it
   recolors live with the site's theme toggle / palette demo exactly like
   the real app does when you change Settings. The bezel itself is a fixed
   dark chassis color regardless of theme (hardware doesn't retheme, same
   reasoning as the app's boot splash always rendering black+white). ---- */

.phone-shell {
  display: flex;
  justify-content: center;
}

.phone-bezel {
  position: relative;
  width: 260px;
  height: 520px;
  background: #0a0a0c;
  border-radius: 28px;
  padding: 6px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
  flex-shrink: 0;
  font-family: var(--font-body);
}

.phone-punch-hole {
  position: absolute;
  top: 15px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #000;
  border: 1px solid #262626;
  z-index: 2;
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: var(--bg);
  border-radius: 22px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  font-family: var(--font-body);
  transition: background-color 0.3s ease;
}

/* Minimal: just the time and a battery icon - no signal bars, no numeric
   percentage label (a full icon already reads as "charged"). */
.phone-statusbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 18px 2px;
  color: var(--text-primary);
  transition: color 0.3s ease;
}

.phone-time {
  font-size: 0.7rem;
  font-weight: 700;
}

.phone-battery-icon {
  position: relative;
  width: 20px;
  height: 10px;
  border: 1.5px solid var(--text-primary);
  border-radius: 2px;
  padding: 1px;
  transition: border-color 0.3s ease;
}

.phone-battery-icon::after {
  content: "";
  position: absolute;
  right: -3px;
  top: 3px;
  width: 2px;
  height: 4px;
  background: var(--text-primary);
  transition: background-color 0.3s ease;
}

.phone-battery-fill {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--text-primary);
  transition: background-color 0.3s ease;
}

.phone-content {
  position: relative;
  flex: 1;
  padding: 10px 14px 8px;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

/* Multi-screen preview stack (used by the "How it works" phone): each
   variant fills the same box and cross-fades in/out, so hovering a step
   swaps the screen without resizing the phone. */
.phone-screen-variant {
  position: absolute;
  top: 10px;
  left: 14px;
  right: 14px;
  bottom: 8px;
  display: flex;
  flex-direction: column;
  opacity: 0;
  z-index: 1;
  pointer-events: none;
  will-change: opacity;
  transition: opacity 0.25s ease;
}

.phone-screen-variant.active {
  opacity: 1;
  z-index: 2;
  pointer-events: auto;
}

.phone-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--space-sm);
}

.phone-title {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
}

.phone-settings {
  font-size: 0.52rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}

.phone-card {
  border: 1px solid var(--border);
  background: var(--surface);
  padding: var(--space-sm);
  margin-bottom: var(--space-sm);
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.phone-card-title {
  font-size: 0.66rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.phone-card-line {
  font-size: 0.58rem;
  color: var(--text-secondary);
}

.phone-accent-box {
  margin-top: var(--space-xs);
  border: 1px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  padding: 6px 8px;
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.phone-accent-label {
  font-size: 0.52rem;
  color: var(--text-secondary);
}

.phone-accent-value {
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--accent);
  transition: color 0.3s ease;
}

.phone-search-bar {
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 6px 8px;
  font-size: 0.56rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.phone-mini-flow {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 4px;
}

.phone-mini-node {
  border: 1px solid var(--border);
  border-top: 2px solid var(--accent-secondary);
  background: var(--bg);
  font-size: 0.5rem;
  font-weight: 700;
  padding: 3px 5px;
  color: var(--text-primary);
  transition: border-color 0.3s ease, background-color 0.3s ease, color 0.3s ease;
}

.phone-mini-arrow {
  color: var(--text-secondary);
  font-size: 0.6rem;
}

.phone-chat-bubble {
  align-self: flex-start;
  max-width: 85%;
  font-size: 0.56rem;
  line-height: 1.4;
  padding: 6px 8px;
  margin-bottom: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-primary);
  transition: border-color 0.3s ease, background-color 0.3s ease, color 0.3s ease;
}

.phone-chat-bubble.user {
  align-self: flex-end;
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 16%, transparent);
}

.phone-chat-scroll {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.phone-switcher-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: var(--space-sm);
}

.phone-switcher-chip {
  flex: 1 1 calc(50% - 3px);
  min-width: 0;
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 4px 6px;
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.phone-switcher-role {
  font-size: 0.46rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.phone-switcher-value {
  font-size: 0.56rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 0.3s ease;
}

.phone-prompt-row {
  display: flex;
  align-items: center;
  gap: 6px;
  border-top: 1px solid var(--border);
  padding-top: var(--space-sm);
  margin-top: var(--space-xs);
  transition: border-color 0.3s ease;
}

.phone-prompt-input {
  flex: 1;
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 5px 8px;
  font-size: 0.56rem;
  color: var(--text-secondary);
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.phone-prompt-send {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  font-size: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.3s ease, color 0.3s ease;
}

/* Header actions: every root screen shows an info affordance (a "GUIDE"
   text link, or a plain "i" circle on Home, which has no guided walkthrough)
   plus a SETTINGS link, always together - never one without the other. */
.phone-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.phone-info-btn {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1.3px solid var(--text-secondary);
  color: var(--text-secondary);
  font-size: 8px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.3s ease, color 0.3s ease;
}

/* Matches the app's real AddTile.tsx: a full-width bordered row right
   under the header, not a floating circular FAB (removed from the app). */
.phone-addtile {
  display: flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  background: var(--surface);
  padding: 5px 8px;
  margin-bottom: var(--space-sm);
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.phone-addtile-plus {
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1;
  transition: color 0.3s ease;
}

.phone-addtile-label {
  color: var(--accent);
  font-size: 0.56rem;
  font-weight: 600;
  transition: color 0.3s ease;
}

/* Matches the app's real BootSplash.tsx exactly: pure black regardless of
   theme (the splash renders before the theme loads), logo scales down from
   oversized to rest, then the wordmark fades in after. */
.phone-screen-variant[data-screen="loading"] {
  inset: 0;
}

.phone-loading {
  width: 100%;
  height: 100%;
  background: #000000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.phone-loading-logo {
  width: 44px;
  height: 44px;
  margin-bottom: 10px;
  animation: phone-loading-logo-in 0.55s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.phone-loading-title {
  color: #FFFFFF;
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  opacity: 0;
  animation: phone-loading-text-in 0.35s ease 0.55s both;
}

.phone-loading-subtitle {
  color: #A6A6A6;
  font-size: 0.56rem;
  margin-top: 4px;
  opacity: 0;
  animation: phone-loading-text-in 0.35s ease 0.55s both;
}

@keyframes phone-loading-logo-in {
  0% { transform: scale(1.6); opacity: 0.6; }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes phone-loading-text-in {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

.phone-onboard {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 8px;
  padding: 0 6px;
}

.phone-onboard-logo {
  width: 32px;
  height: 32px;
}

.phone-onboard-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  transition: color 0.3s ease;
}

.phone-onboard-desc {
  font-size: 0.56rem;
  line-height: 1.4;
  color: var(--text-secondary);
}

.phone-onboard-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 8px;
}

.phone-onboard-skip {
  font-size: 0.6rem;
  color: var(--text-secondary);
}

.phone-onboard-next {
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 4px 10px;
  transition: color 0.3s ease, border-color 0.3s ease;
}

.phone-tabbar {
  display: flex;
  justify-content: space-around;
  border-top: 1px solid var(--border);
  padding-top: var(--space-xs);
  margin-top: auto;
  opacity: 1;
  transition: border-color 0.3s ease, opacity 0.25s ease;
}

.phone-tabbar.hidden {
  opacity: 0;
  pointer-events: none;
}

.phone-tab {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.phone-tab.active {
  color: var(--accent);
  transition: color 0.3s ease;
}

.phone-home-indicator {
  width: 90px;
  height: 4px;
  background: var(--text-secondary);
  border-radius: 2px;
  margin: 6px auto 4px;
  opacity: 0.5;
}

@media (max-width: 560px) {
  .phone-bezel {
    width: 220px;
    height: 440px;
  }
}

/* ---- footer ---- */

.footer {
  padding: var(--space-2xl) 0;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.footer-brand img {
  width: 20px;
  height: 20px;
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
}

.footer-links a:hover {
  color: var(--text-primary);
}

/* ---- utility ---- */

.mono {
  font-family: "SFMono-Regular", Consolas, monospace;
}

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

@media (max-width: 760px) {
  .nav-links {
    display: none;
  }
  .section {
    padding: var(--space-2xl) 0;
  }
}

@media (max-width: 460px) {
  .nav-actions .btn.neutral {
    display: none;
  }
  .nav-actions .btn.small {
    padding: 7px 10px;
    font-size: 0.75rem;
  }
}