:root {
  color-scheme: dark;
  --navy: #08152e;
  --cyan: #27dfe6;
  --blue: #65aafa;
  --purple: #c887f7;
  --amber: #ffd071;
  --white: #fbfaff;
  --body-font: 'Trebuchet MS', 'Segoe UI', Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: #070e25; color: var(--white); font-family: var(--body-font); }
a { color: inherit; }
button { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible { outline: 3px solid #fff; outline-offset: 5px; }
.icon-definitions, .visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.glyph { width: 1.35em; height: 1.35em; flex: none; fill: none; stroke: currentColor; stroke-width: 1.85; stroke-linecap: round; stroke-linejoin: round; }
.skip-link { z-index: 100; position: fixed; top: -100px; left: 16px; padding: 10px 16px; background: #fff; color: #142245; border-radius: 8px; }
.skip-link:focus { top: 16px; }

.homepage { position: relative; isolation: isolate; min-height: 740px; min-height: max(740px, 100svh); overflow: hidden; display: flex; flex-direction: column; align-items: center; padding: 0 clamp(20px,3.5vw,74px); }
.world-art,.world-colour,.world-shade { position: absolute; inset: 0; z-index: -2; pointer-events: none; }
.world-art { background: #192a58 url('assets/homepage/floating-islands-background.png') center 46% / cover no-repeat; transform: scale(1.015); }
.world-colour { z-index: -1; background: linear-gradient(180deg,rgba(5,14,39,.18) 0%,transparent 24%,transparent 52%,rgba(6,13,35,.40) 73%,rgba(3,8,24,.92) 100%); }
.world-shade { z-index: -1; background: radial-gradient(ellipse at 52% 67%, rgba(4,14,37,.45), transparent 35%), linear-gradient(90deg,rgba(4,10,27,.18),transparent 35%,transparent 72%,rgba(4,10,27,.12)); }
.dave-stage { position: absolute; z-index: 1; inset: 0 auto 0 0; width: 43%; pointer-events: none; /* A future non-photographic Dave asset attaches here. */ }
.page-top { width: min(100%,1650px); display: flex; justify-content: space-between; align-items: center; gap: 10px; padding-top: clamp(18px,2.2vw,34px); position: relative; z-index: 4; }
.page-top__eyebrow,.page-top__prototype { letter-spacing: .15em; text-transform: uppercase; font-size: clamp(10px,.8vw,12px); color: rgba(255,255,255,.81); font-weight: 700; text-shadow: 0 2px 8px #031027; }
.page-top__eyebrow { display: inline-flex; align-items: center; gap: 8px; }
.page-top__eyebrow svg { color: var(--amber); font-size: 16px; }
.page-top__prototype { font-size: 10px; opacity: .75; }
.page-top__prototype span { padding: 0 4px; color: var(--amber); }

.island-nav { position: absolute; inset: 0; z-index: 2; pointer-events: none; }
.island { --island-color: #fff; position: absolute; pointer-events: auto; display: flex; flex-direction: column; align-items: center; gap: 6px; min-width: 154px; padding: 14px 18px 15px; color: white; text-decoration: none; font-size: clamp(13px,1.2vw,17px); font-weight: 800; text-transform: uppercase; letter-spacing: .16em; text-shadow: 0 2px 6px #0d173c, 0 0 16px #163165; border: 1px solid transparent; border-radius: 18px; transition: background .22s ease, border-color .22s ease, transform .22s ease, box-shadow .22s ease; }
.island .glyph { font-size: clamp(31px,3vw,45px); filter: drop-shadow(0 0 7px var(--island-color)); stroke-width: 1.9; }
.island:hover,.island:focus-visible { background: rgba(6,17,45,.52); border-color: color-mix(in srgb,var(--island-color) 70%, transparent); box-shadow: 0 0 24px color-mix(in srgb,var(--island-color) 25%,transparent); transform: translateY(-5px); }
.island--writing { --island-color: #82bbff; left: 5.1%; top: 16%; }
.island--games { --island-color: #b3caff; left: 47.5%; top: 5%; }
.island--experiments { --island-color: #c0cfff; right: 4.5%; top: 15%; }
.island--projects { --island-color: #b8d9ff; right: 4.5%; top: 49%; }

.welcome { position: relative; z-index: 3; width: min(100%,640px); display: flex; flex-direction: column; align-items: center; gap: 0; margin-top: auto; text-align: center; padding-top: 120px; margin-bottom: clamp(32px,5vh,66px); pointer-events: none; }
.welcome__logo { display: block; width: clamp(272px,31vw,520px); max-width: 96%; height: auto; max-height: 180px; object-fit: contain; filter: drop-shadow(0 8px 16px rgba(0,0,0,.48)); }
.welcome__tagline { color: #f5f0f6; font-size: clamp(10px,1.05vw,14px); letter-spacing: clamp(.12em,.3vw,.28em); font-weight: 600; text-shadow: 0 2px 9px #040916; margin: 6px 0 25px; line-height: 1.6; }
.welcome__tagline span { color: #ffdfa9; padding: 0 .35em; }
.explore-button { width: min(425px,92%); display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 18px 27px; pointer-events: auto; text-decoration: none; background: linear-gradient(180deg,#ffe092 0%,#ffce72 53%,#ffb34f 100%); color: #131a26; font-size: clamp(19px,2vw,25px); font-weight: 900; border: 2px solid #ffe5ad; border-radius: 999px; box-shadow: 0 0 0 5px rgba(255,173,81,.09),0 8px 36px rgba(254,169,65,.55), inset 0 1px 0 rgba(255,255,255,.9); transition: transform .22s ease, box-shadow .22s ease, filter .22s ease; }
.explore-button:hover,.explore-button:focus-visible { transform: translateY(-4px) scale(1.015); box-shadow: 0 0 0 7px rgba(255,173,81,.14),0 15px 55px rgba(254,169,65,.75),inset 0 1px 0 #fff; filter: saturate(1.06); }
.explore-button__compass { font-size: 22px; }
.explore-button__arrow { font-size: 24px; transition: transform .22s ease; }
.explore-button:hover .explore-button__arrow { transform: translateX(5px); }

.destination-nav { position: relative; z-index: 3; width: min(100%,1060px); display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 12px; scroll-margin: 28px; }
.nav-tile { --tile-color:var(--blue); display: flex; align-items: center; gap: 14px; min-height: 72px; padding: 14px 16px; border-radius: 12px; text-decoration: none; color: #fff; background: linear-gradient(110deg,rgba(16,33,70,.9),rgba(10,25,55,.66)); border: 1px solid rgba(170,192,239,.35); box-shadow: inset 0 1px 0 rgba(255,255,255,.06),0 7px 25px rgba(0,0,0,.25); backdrop-filter: blur(13px); -webkit-backdrop-filter: blur(13px); font-size: clamp(15px,1.15vw,18px); font-weight: 700; transition: background .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease; }
.nav-tile[data-category="writing"] { --tile-color: var(--purple); }
.nav-tile[data-category="games"] { --tile-color: var(--cyan); }
.nav-tile[data-category="experiments"] { --tile-color: var(--amber); }
.nav-tile__icon { color: var(--tile-color); font-size: 25px; filter: drop-shadow(0 0 5px color-mix(in srgb,var(--tile-color) 46%,transparent)); }
.nav-tile__chevron { margin-left: auto; color: #c5d6f5; font-size: 17px; }
.nav-tile:hover,.nav-tile:focus-visible { transform: translateY(-5px); background: rgba(24,43,85,.95); border-color: var(--tile-color); box-shadow: 0 0 22px color-mix(in srgb,var(--tile-color) 20%,transparent),0 10px 30px rgba(0,0,0,.34); }
.homepage__footer { position: relative; z-index: 2; text-align: center; color: rgba(227,233,255,.62); font-size: 11px; letter-spacing: .09em; margin-top: 22px; margin-bottom: max(18px,env(safe-area-inset-bottom)); }

.world-dialog { max-width: none; max-height: none; margin: auto; padding: 0; border: 1px solid rgba(173,198,255,.45); border-radius: 22px; background: #0e1c3c; color: #fff; box-shadow: 0 30px 100px rgba(0,0,0,.63),0 0 55px rgba(67,133,250,.24); width: min(92vw,690px); overflow: auto; }
.world-dialog::backdrop { background: rgba(4,10,25,.77); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.world-dialog__panel { background: radial-gradient(ellipse at 86% -10%,rgba(79,125,220,.3),transparent 55%),linear-gradient(135deg,#142950,#08142c); }
.world-dialog__top { display: flex; align-items: center; justify-content: space-between; gap: 14px; border-bottom: 1px solid rgba(170,198,250,.18); padding: 20px clamp(22px,4vw,38px); }
.world-dialog__eyebrow,.world-dialog__kicker { color: #a7c9fd; letter-spacing: .19em; font-size: 11px; font-weight: 800; }
.world-dialog__eyebrow span { padding: 0 4px; color: var(--amber); }
.dialog-close { display: grid; place-items: center; width: 39px; height: 39px; cursor: pointer; color: white; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.25); border-radius: 10px; }
.dialog-close:hover { background: rgba(255,255,255,.22); }
.world-dialog__body { padding: clamp(24px,4vw,38px); }
.world-dialog__body h2 { margin: 14px 0 9px; font-size: clamp(29px,4vw,43px); line-height: 1.12; letter-spacing: -.03em; }
.world-dialog__body > p { max-width: 490px; margin: 0 0 25px; color: #d4e1f8; line-height: 1.65; }
.world-dialog__footer { padding: 18px clamp(22px,4vw,38px); border-top: 1px solid rgba(170,198,250,.17); font-size: 12px; color: #a9bfe0; }
.world-directory { display: grid; gap: 10px; grid-template-columns: repeat(2,minmax(0,1fr)); }
.world-directory__item { --tile-color:var(--blue); min-height: 126px; padding: 18px; display: flex; flex-direction: column; justify-content: space-between; gap: 9px; border: 1px solid rgba(177,204,255,.3); border-radius: 13px; background: rgba(255,255,255,.05); text-decoration: none; transition: background .2s ease,transform .2s ease,border-color .2s ease; }
.world-directory__item[data-category="writing"] { --tile-color:var(--purple); }
.world-directory__item[data-category="games"] { --tile-color:var(--cyan); }
.world-directory__item[data-category="experiments"] { --tile-color:var(--amber); }
.world-directory__item > .glyph:first-child { font-size: 27px; color: var(--tile-color); }
.world-directory__item > .glyph:last-child { display: none; }
.world-directory__words { display: flex; flex-direction: column; gap: 5px; }
.world-directory__words strong { font-size: 17px; }
.world-directory__words small { color: #b9cae6; font-size: 12px; line-height: 1.4; }
.world-directory__item:hover,.world-directory__item:focus-visible { transform: translateY(-3px); border-color: var(--tile-color); background: rgba(255,255,255,.13); }
.section-details { --tile-color: var(--blue); }
.section-details[data-category="writing"] { --tile-color:var(--purple); }
.section-details[data-category="games"] { --tile-color:var(--cyan); }
.section-details[data-category="experiments"] { --tile-color:var(--amber); }
.section-details__status { display: inline-flex; align-items: center; gap: 8px; margin: 4px 0 13px; padding: 9px 13px; border: 1px solid color-mix(in srgb,var(--tile-color) 50%,transparent); background: color-mix(in srgb,var(--tile-color) 10%,transparent); color: var(--tile-color); border-radius: 999px; font-weight: 700; font-size: 12px; }
.section-details__status::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.section-details__note { color: #dce4f4; line-height: 1.6; margin: 0 0 30px; }
.section-details__back { display: inline-flex; padding: 12px 0; font-weight: 700; color: #ffe0a0; text-underline-offset: 4px; }

@media (max-width: 900px) {
  .homepage { min-height: max(690px,100svh); padding-inline: 20px; }
  .page-top__eyebrow { font-size: 10px; }
  .island { padding: 8px 10px; min-width: 120px; font-size: 12px; letter-spacing: .12em; }
  .island--writing { left: 2%; top: 18%; }
  .island--games { left: 43%; top: 8%; }
  .island--experiments { right: 2%; top: 18%; }
  .island--projects { right: 2%; top: 44%; }
  .welcome { margin-bottom: 30px; }
  .destination-nav { gap: 9px; }
  .nav-tile { min-height: 66px; gap: 9px; padding: 12px; font-size: 14px; }
  .nav-tile__icon { font-size: 21px; }
}
@media (max-width: 640px) {
  .homepage { min-height: max(760px,100svh); padding: 0 17px; }
  .world-art { background-position: 53% 35%; }
  .world-colour { background: linear-gradient(180deg,rgba(5,14,39,.27),transparent 25%,rgba(4,13,34,.32) 49%,rgba(5,12,31,.8) 71%,#060d23 100%); }
  .world-shade { background: radial-gradient(ellipse at 50% 57%,rgba(6,14,35,.53),transparent 53%); }
  .page-top { padding-top: 17px; }
  .page-top__eyebrow { max-width: 220px; line-height: 1.35; }
  .page-top__prototype { white-space: nowrap; }
  .island { font-size: 11px; min-width: 95px; letter-spacing: .08em; gap: 3px; padding: 8px; }
  .island .glyph { font-size: 25px; }
  .island--writing { left: 1%; top: 15%; }
  .island--games { left: 38%; top: 13%; }
  .island--experiments { right: 1%; top: 15%; }
  .island--projects { right: 1%; top: 32%; }
  .welcome { width: 100%; padding-top: 300px; margin-bottom: 24px; }
  .welcome__logo { width: min(85vw,410px); }
  .welcome__tagline { font-size: 9px; letter-spacing: .08em; margin: 5px 0 20px; }
  .welcome__tagline span { padding: 0 .1em; }
  .explore-button { width: min(100%,360px); min-height: 64px; font-size: 19px; padding: 13px 20px; }
  .explore-button__compass { font-size: 18px; }
  .explore-button__arrow { font-size: 20px; }
  .destination-nav { width: min(100%,440px); grid-template-columns: repeat(2,minmax(0,1fr)); gap: 9px; }
  .nav-tile { min-height: 66px; font-size: 14px; gap: 9px; }
  .nav-tile__chevron { font-size: 14px; }
  .homepage__footer { font-size: 10px; margin-top: 20px; line-height: 1.4; }
  .world-dialog { width: min(94vw,540px); max-height: calc(100svh - 32px); border-radius: 17px; }
}
@media (max-width: 380px) {
  .page-top__eyebrow { max-width: 170px; }
  .island { min-width: 80px; font-size: 10px; }
  .island--games { left: 35%; }
  .nav-tile { padding: 10px 11px; }
  .world-directory { grid-template-columns: 1fr; }
  .world-directory__item { min-height: 100px; }
}
@media (max-height: 800px) and (min-width: 901px) {
  .homepage { min-height: 680px; }
  .welcome { margin-bottom: 24px; padding-top: 100px; }
  .welcome__logo { width: clamp(255px,27vw,430px); max-height: 140px; }
  .welcome__tagline { margin-bottom: 18px; }
  .explore-button { padding-block: 15px; }
  .homepage__footer { margin-top: 14px; margin-bottom: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,*::before,*::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}
/* The welcome section has a tall transparent spacing area on mobile.
   Never let that invisible area block the floating-island links. */
.welcome { pointer-events: none; }
.explore-button { pointer-events: auto; }

/* DH-02C: One responsive, non-scrolling scene. Destination dialogs scroll
   independently; the empty illustrated-Dave overlay remains untouched. */
html, body { height: 100%; width: 100%; overflow: hidden; }
.homepage {
  --scene-side: clamp(18px, 3.5vw, 74px);
  --nav-bottom: clamp(33px, 5.6vh, 55px);
  --nav-row-height: clamp(58px, 8.5vh, 72px);
  --hero-nav-gap: clamp(19px, 3.2vh, 38px);
  height: 100vh;
  height: 100svh;
  min-height: 0;
  max-height: 100svh;
  overflow: hidden;
  display: block;
  padding-inline: var(--scene-side);
}
.page-top {
  position: absolute;
  top: 0;
  left: 50%;
  width: min(calc(100% - 2 * var(--scene-side)), 1650px);
  transform: translateX(-50%);
}
.welcome {
  position: absolute;
  bottom: calc(var(--nav-bottom) + var(--nav-row-height) + var(--hero-nav-gap));
  left: 50%;
  transform: translateX(-50%);
  width: min(calc(100% - 2 * var(--scene-side)), 640px);
  padding: 0;
  margin: 0;
}
.welcome__logo {
  width: clamp(235px, 28vw, 475px);
  max-height: min(20svh, 155px);
}
.welcome__tagline { margin: 3px 0 clamp(10px, 2.4vh, 22px); }
.explore-button {
  min-height: clamp(52px, 8.5vh, 72px);
  padding-block: clamp(10px, 1.8vh, 17px);
}
.destination-nav {
  position: absolute;
  bottom: var(--nav-bottom);
  left: 50%;
  transform: translateX(-50%);
  width: min(calc(100% - 2 * var(--scene-side)), 1060px);
}
.nav-tile {
  min-height: var(--nav-row-height);
  padding-block: clamp(8px, 1.5vh, 14px);
}
.homepage__footer {
  position: absolute;
  bottom: max(9px, env(safe-area-inset-bottom));
  left: 0;
  width: 100%;
  margin: 0;
}
@media (max-width: 900px) {
  .homepage {
    --scene-side: 20px;
    --nav-row-height: clamp(54px, 8vh, 66px);
    --hero-nav-gap: clamp(15px, 2.8vh, 29px);
  }
  .welcome { margin: 0; padding: 0; }
}
@media (max-width: 640px) {
  .homepage {
    --scene-side: 17px;
    --nav-bottom: clamp(30px, 4.8vh, 43px);
    --nav-row-height: clamp(52px, 7.3vh, 66px);
    --hero-nav-gap: clamp(13px, 2vh, 23px);
  }
  .welcome {
    bottom: calc(var(--nav-bottom) + 2 * var(--nav-row-height) + 9px + var(--hero-nav-gap));
    width: min(calc(100% - 2 * var(--scene-side)), 440px);
    margin: 0;
    padding: 0;
  }
  .welcome__logo { width: min(75vw, 370px); max-height: min(15svh, 115px); }
  .welcome__tagline { margin: 3px 0 clamp(9px, 1.8vh, 15px); }
  .explore-button { min-height: clamp(50px, 7.4vh, 64px); }
  .destination-nav { width: min(calc(100% - 2 * var(--scene-side)), 440px); }
  .nav-tile { min-height: var(--nav-row-height); }
  .homepage__footer { margin: 0; bottom: max(8px, env(safe-area-inset-bottom)); }
}
@media (max-height: 690px) and (min-width: 641px) {
  .homepage {
    --nav-bottom: 28px;
    --nav-row-height: clamp(51px, 8vh, 62px);
    --hero-nav-gap: 14px;
  }
  .welcome__logo { width: min(26vw, 360px); max-height: 16svh; }
  .welcome__tagline { margin-bottom: 9px; }
  .explore-button { min-height: 48px; padding-block: 9px; font-size: 19px; }
  .island { padding-block: 8px; }
  .island .glyph { font-size: clamp(22px, 4vh, 30px); }
  .homepage__footer { bottom: 7px; }
}
@media (max-height: 650px) and (max-width: 640px) {
  .homepage {
    --nav-bottom: 27px;
    --nav-row-height: 51px;
    --hero-nav-gap: 10px;
  }
  .welcome__logo { max-height: 12svh; width: min(71vw, 320px); }
  .welcome__tagline { margin-bottom: 8px; font-size: 8px; }
  .explore-button { min-height: 46px; padding-block: 8px; font-size: 17px; }
  .nav-tile { font-size: 12px; }
  .island .glyph { font-size: 22px; }
}
@media (max-height: 430px) and (orientation: landscape) {
  .homepage {
    --nav-bottom: 10px;
    --nav-row-height: 43px;
    --hero-nav-gap: 8px;
  }
  .page-top { padding-top: 7px; }
  .page-top__eyebrow, .page-top__prototype { font-size: 9px; }
  .welcome__logo { width: min(24vw, 260px); max-height: 14svh; }
  .welcome__tagline { font-size: 8px; margin: 2px 0 5px; }
  .explore-button { width: min(305px, 94%); min-height: 42px; padding: 5px 15px; font-size: 16px; }
  .nav-tile { min-height: 43px; padding: 6px 10px; font-size: 13px; }
  .nav-tile__icon { font-size: 17px; }
  .island { min-width: 90px; font-size: 10px; gap: 2px; padding: 4px 6px; }
  .island .glyph { font-size: 21px; }
  .island--projects { top: 33%; }
  .homepage__footer { display: none; }
}
/* Extreme portrait heights/large zoom must not make controls inaccessible. */
@media (max-height: 430px) and (orientation: portrait) {
  html, body { overflow: auto; }
  .homepage { min-height: 430px; height: auto; max-height: none; }
}