/* P1: palette-aware color values; literal fallbacks preserve the certified default. */
/* =========================================================
   WORDSTRIKE UI2 — TITLE SCREEN & GLOBAL NAVIGATION
   Owns only the Title screen. Mode Select and later surfaces remain staged.
   ========================================================= */

.title-screen {
  position: relative;
  display: grid;
  width: 100%;
  min-width: 0;
  height: auto;
  min-height: 100vh;
  min-height: 100dvh;
  align-items: stretch;
  padding:
    max(var(--space-5), env(safe-area-inset-top))
    max(var(--space-5), env(safe-area-inset-right))
    max(var(--space-5), env(safe-area-inset-bottom))
    max(var(--space-5), env(safe-area-inset-left));
  overflow-x: hidden;
  overflow-y: auto;
  background:
    radial-gradient(circle at 28% 48%, rgb(var(--custom-accent-rgb, 0 255 242) / 8%), transparent 34%),
    radial-gradient(circle at 82% 30%, rgb(255 60 172 / 4%), transparent 26%),
    linear-gradient(135deg, rgb(255 255 255 / 1.2%), transparent 34%),
    transparent;
  isolation: isolate;
}

.title-screen::before,
.title-screen::after {
  content: "";
  position: absolute;
  z-index: -1;
  pointer-events: none;
}

.title-screen::before {
  inset: 0;
  background:
    linear-gradient(90deg, transparent 0 49.96%, rgb(143 160 174 / 7%) 50%, transparent 50.04%),
    linear-gradient(transparent 0 49.96%, rgb(143 160 174 / 5%) 50%, transparent 50.04%);
  mask-image: radial-gradient(circle at 50% 50%, black, transparent 72%);
}

.title-screen::after {
  top: 50%;
  left: 26%;
  width: min(54vw, 720px);
  aspect-ratio: 1;
  border: 1px solid rgb(var(--custom-accent-rgb, 0 255 242) / 7%);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow:
    0 0 0 72px rgb(var(--custom-accent-rgb, 0 255 242) / 1.5%),
    0 0 0 144px rgb(var(--custom-accent-rgb, 0 255 242) / 0.8%);
}

.title-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  width: min(1180px, 100%);
  min-width: 0;
  min-height: min(720px, calc(100dvh - (var(--space-5) * 2)));
  margin: auto;
}

.title-topline,
.title-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-label);
}

.title-topline {
  min-height: 48px;
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border-subtle);
}

.title-brand-label {
  color: var(--color-text-secondary);
  font-weight: 700;
  letter-spacing: var(--tracking-label);
}

.title-product-note {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.title-product-note::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 10px rgb(var(--custom-accent-rgb, 0 255 242) / 36%);
}

.title-main {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  gap: clamp(var(--space-7), 7vw, 6rem);
  align-items: center;
  min-width: 0;
  padding-block: clamp(var(--space-6), 6vh, var(--space-8));
}

.title-hero,
.title-global-nav {
  min-width: 0;
}

.title-hero {
  position: relative;
  display: grid;
  justify-items: start;
  align-content: center;
}

.title-kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--text-label);
  font-weight: 650;
  letter-spacing: var(--tracking-label);
}

.title-kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--color-accent);
  box-shadow: var(--bloom-accent-sm);
}

.title-screen .brand-logo {
  display: block;
  width: clamp(260px, 34vw, 430px);
  max-width: 100%;
  height: auto;
  margin: var(--space-3) 0 var(--space-2);
  object-fit: contain;
  user-select: none;
  pointer-events: none;
  -webkit-user-drag: none;
  filter:
    drop-shadow(0 0 14px rgb(var(--custom-accent-rgb, 0 255 242) / 15%))
    drop-shadow(0 0 22px rgb(255 60 172 / 8%));
}

.title-tagline {
  max-width: 620px;
  margin: 0;
  color: var(--color-text-primary);
  font-size: clamp(1.65rem, 3.2vw, 2.75rem);
  font-weight: 720;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
}

.title-description {
  max-width: 560px;
  margin: var(--space-3) 0 var(--space-5);
  color: var(--color-text-secondary);
  font-size: var(--text-body);
  line-height: var(--leading-body);
}

.title-start-button {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  width: min(430px, 100%);
  min-height: 68px;
  align-items: center;
  gap: var(--space-3);
  padding: 0.8rem 1rem;
  text-align: left;
}

.title-start-button .title-action-icon {
  border-color: rgb(3 19 19 / 20%);
  background: rgb(3 19 19 / 10%);
  color: #031313;
}

.title-start-copy {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.title-start-copy strong {
  color: inherit;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.035em;
}

.title-start-copy small {
  color: rgb(3 19 19 / 68%);
  font-size: var(--text-micro);
  font-weight: 650;
  letter-spacing: 0.02em;
}

.title-start-button .title-action-arrow {
  color: rgb(3 19 19 / 66%);
}

.title-start-button.selected {
  box-shadow: var(--shadow-elevation-subtle), var(--bloom-accent-sm);
}

.title-start-button:focus-visible {
  box-shadow: var(--focus-ring), var(--bloom-accent-sm);
}

.title-keyboard-hint {
  margin: var(--space-3) 0 0;
  color: var(--color-text-muted);
  font-family: var(--font-game);
  font-size: var(--text-micro);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.025em;
}

.title-global-nav {
  position: relative;
  display: grid;
  align-content: center;
  padding-left: clamp(var(--space-5), 4vw, var(--space-7));
  border-left: 1px solid var(--color-border-subtle);
}

.title-nav-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.title-nav-heading strong {
  color: var(--color-text-primary);
  font-size: var(--text-body-small);
  font-weight: 700;
}

.title-nav-heading span {
  color: var(--color-text-muted);
  font-family: var(--font-game);
  font-size: var(--text-micro);
}

.title-nav-list {
  display: grid;
}

.title-nav-action {
  position: relative;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto;
  min-width: 0;
  min-height: 70px;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-2);
  border: 0;
  border-top: 1px solid var(--color-border-subtle);
  border-radius: 0;
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  text-align: left;
  transition:
    background-color var(--motion-fast) var(--ease-standard),
    color var(--motion-fast) var(--ease-standard),
    box-shadow var(--motion-fast) var(--ease-standard),
    transform var(--motion-fast) var(--ease-standard);
}

.title-nav-action:last-child {
  border-bottom: 1px solid var(--color-border-subtle);
}

.title-nav-action:hover {
  background: rgb(255 255 255 / 2.5%);
  color: var(--color-text-primary);
  transform: translateX(2px);
}

.title-nav-action.selected {
  background: linear-gradient(90deg, var(--color-accent-soft), transparent 78%);
  color: var(--color-text-primary);
  box-shadow: inset 2px 0 var(--color-accent);
}

.title-nav-action:active {
  transform: none;
}

.title-nav-action:focus-visible {
  z-index: 1;
  outline: none;
  box-shadow: var(--focus-ring);
}

.title-nav-action.selected:focus-visible {
  box-shadow: var(--focus-ring), inset 2px 0 var(--color-accent);
}

.title-action-icon {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  background: var(--color-surface-1);
  color: var(--color-text-muted);
  transition:
    border-color var(--motion-fast) var(--ease-standard),
    background-color var(--motion-fast) var(--ease-standard),
    color var(--motion-fast) var(--ease-standard);
}

.title-nav-action:hover .title-action-icon,
.title-nav-action.selected .title-action-icon {
  border-color: rgb(var(--custom-accent-rgb, 0 255 242) / 30%);
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.title-action-copy {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.title-action-copy strong {
  min-width: 0;
  color: inherit;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0;
}

.title-action-copy span {
  min-width: 0;
  color: var(--color-text-muted);
  font-size: var(--text-micro);
  line-height: 1.35;
}

.title-action-arrow {
  display: grid;
  place-items: center;
  color: var(--color-text-disabled);
}

.title-nav-action:hover .title-action-arrow,
.title-nav-action.selected .title-action-arrow {
  color: var(--color-accent);
}

.title-footer {
  min-height: 48px;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border-subtle);
}

.title-footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
}

.title-footer-meta span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.title-footer-meta span::before {
  content: "";
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--color-border-strong);
}

.title-footer-mark {
  color: var(--color-text-secondary);
  font-family: var(--font-game);
  font-size: var(--text-micro);
  letter-spacing: 0.04em;
}

@media (max-width: 820px) {
  .title-screen {
    padding:
      max(var(--space-4), env(safe-area-inset-top))
      max(var(--space-4), env(safe-area-inset-right))
      max(var(--space-4), env(safe-area-inset-bottom))
      max(var(--space-4), env(safe-area-inset-left));
  }

  .title-shell {
    min-height: calc(100dvh - (var(--space-4) * 2));
  }

  .title-main {
    grid-template-columns: 1fr;
    gap: var(--space-6);
    padding-block: var(--space-6);
  }

  .title-hero {
    justify-items: center;
    text-align: center;
  }

  .title-kicker {
    justify-content: center;
  }

  .title-screen .brand-logo {
    width: min(76vw, 330px);
    margin-inline: auto;
  }

  .title-description {
    max-width: 34rem;
  }

  .title-start-button {
    width: min(430px, 100%);
  }

  .title-global-nav {
    width: min(560px, 100%);
    margin-inline: auto;
    padding-left: 0;
    border-left: 0;
  }

  .title-nav-heading {
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border-subtle);
  }
}

@media (max-width: 520px) {
  .title-screen {
    padding:
      max(var(--space-3), env(safe-area-inset-top))
      max(var(--space-3), env(safe-area-inset-right))
      max(var(--space-3), env(safe-area-inset-bottom))
      max(var(--space-3), env(safe-area-inset-left));
  }

  .title-shell {
    min-height: calc(100dvh - (var(--space-3) * 2));
  }

  .title-topline,
  .title-footer {
    font-size: var(--text-micro);
  }

  .title-topline {
    min-height: 40px;
  }

  .title-product-note {
    max-width: 50%;
    justify-content: flex-end;
    text-align: right;
  }

  .title-main {
    gap: var(--space-5);
    padding-block: var(--space-5);
  }

  .title-screen .brand-logo {
    width: min(70vw, 250px);
    margin-top: var(--space-2);
  }

  .title-tagline {
    font-size: clamp(1.45rem, 8vw, 2rem);
  }

  .title-description {
    margin-bottom: var(--space-4);
    font-size: var(--text-body-small);
  }

  .title-start-button {
    min-height: 62px;
  }

  .title-nav-action {
    min-height: 62px;
  }

  .title-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-height: 650px) and (min-width: 821px) {
  .title-screen {
    padding-block:
      max(var(--space-3), env(safe-area-inset-top))
      max(var(--space-3), env(safe-area-inset-bottom));
  }

  .title-shell {
    min-height: calc(100dvh - (var(--space-3) * 2));
  }

  .title-topline,
  .title-footer {
    min-height: 38px;
  }

  .title-main {
    gap: var(--space-6);
    padding-block: var(--space-4);
  }

  .title-screen .brand-logo {
    width: clamp(220px, 25vw, 320px);
    margin-block: var(--space-2);
  }

  .title-tagline {
    font-size: clamp(1.4rem, 2.3vw, 2rem);
  }

  .title-description {
    margin-block: var(--space-2) var(--space-3);
    font-size: var(--text-body-small);
  }

  .title-start-button {
    min-height: 58px;
  }

  .title-nav-action {
    min-height: 58px;
    padding-block: var(--space-2);
  }
}

@media (prefers-reduced-motion: reduce) {
  .title-start-button,
  .title-nav-action,
  .title-action-icon {
    transition-duration: 0.001ms;
  }

  .title-nav-action:hover {
    transform: none;
  }
}