@font-face {
  font-family: "Onest";
  src: url("../fonts/onest-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --portal-bg: oklch(0.13 0.012 265);
  --portal-surface: oklch(0.19 0.018 265);
  --portal-surface-strong: oklch(0.24 0.024 265);
  --portal-line: oklch(0.34 0.025 265);
  --portal-ink: oklch(0.96 0.008 255);
  --portal-muted: oklch(0.74 0.022 255);
  --portal-accent: oklch(0.61 0.23 266);
  --portal-accent-soft: oklch(0.72 0.16 262);
  --nav-height: 76px;
  font-family: "Onest", "Microsoft YaHei UI", "PingFang SC", system-ui, sans-serif;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 24px);
}

body {
  color: var(--portal-ink);
  background:
    radial-gradient(circle at 72% 10%, oklch(0.28 0.11 267 / 0.28), transparent 30rem),
    var(--portal-bg);
}

body[data-view]:not([data-view="portal"]) {
  padding-top: var(--nav-height);
}

.skip-link {
  position: fixed;
  z-index: 70;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: var(--portal-bg);
  background: var(--portal-ink);
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-nav {
  position: fixed;
  z-index: 30;
  inset: 0 0 auto;
  min-height: var(--nav-height);
  border-bottom: 1px solid transparent;
  background: transparent;
  transition: background-color 220ms ease, border-color 220ms ease;
}

.site-nav.is-scrolled,
body[data-view]:not([data-view="portal"]) .site-nav {
  border-color: oklch(0.34 0.025 265 / 0.64);
  background: oklch(0.13 0.012 265 / 0.94);
}

.site-nav-inner {
  width: min(1240px, calc(100% - 40px));
  min-height: var(--nav-height);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: clamp(20px, 4vw, 54px);
}

.site-brand {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--portal-ink);
  font-size: 0.82rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.site-brand-mark {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 1px solid var(--portal-line);
  color: var(--portal-bg);
  background: var(--portal-ink);
  font-size: 0.82rem;
  letter-spacing: 0;
}

.site-menu {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.8vw, 36px);
}

.site-menu a {
  position: relative;
  padding: 10px 0;
  color: var(--portal-muted);
  font-size: 0.82rem;
  font-weight: 650;
  text-decoration: none;
  transition: color 160ms ease;
}

.site-menu a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 5px;
  left: 0;
  height: 1px;
  background: var(--portal-accent-soft);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 220ms cubic-bezier(0.22, 1, 0.36, 1);
}

.site-menu a:hover,
.site-menu a:focus-visible {
  color: var(--portal-ink);
}

.site-menu a:hover::after,
.site-menu a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.site-menu-button {
  display: none;
}

.site-nav .account-button {
  min-width: 168px;
  min-height: 46px;
  padding: 6px 10px 6px 7px;
  border-radius: 12px;
  background: oklch(0.19 0.018 265 / 0.88);
}

.site-nav .account-avatar {
  width: 32px;
  height: 32px;
  color: var(--portal-bg);
  background: var(--portal-accent-soft);
}

.site-nav .coin-balance {
  display: none !important;
}

.portal-home {
  min-height: 100dvh;
  overflow: clip;
  color: var(--portal-ink);
  background:
    linear-gradient(90deg, transparent 0 49.92%, oklch(0.34 0.025 265 / 0.14) 50%, transparent 50.08%),
    radial-gradient(circle at 76% 18%, oklch(0.35 0.15 267 / 0.16), transparent 30rem),
    var(--portal-bg);
}

.portal-hero {
  position: relative;
  width: min(1240px, calc(100% - 40px));
  min-height: 100svh;
  margin: 0 auto;
  padding: calc(var(--nav-height) + clamp(56px, 8vh, 96px)) 0 clamp(54px, 8vh, 88px);
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  align-items: center;
  gap: clamp(36px, 6vw, 88px);
}

.portal-hero-copy {
  position: relative;
  z-index: 2;
  max-width: 610px;
}

.portal-signature {
  width: max-content;
  margin: 0 0 clamp(28px, 5vh, 52px);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--portal-accent-soft);
  color: var(--portal-muted);
  font-size: 0.74rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.portal-hero h1 {
  max-width: 7ch;
  margin: 0;
  color: var(--portal-ink);
  font-size: clamp(4rem, 8vw, 6rem);
  font-weight: 780;
  line-height: 0.84;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.portal-intro {
  max-width: 30ch;
  margin: clamp(28px, 5vh, 46px) 0 0;
  color: var(--portal-muted);
  font-size: clamp(1.05rem, 1.7vw, 1.3rem);
  line-height: 1.75;
  text-wrap: pretty;
}

.portal-hero-actions {
  margin-top: 34px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.portal-action,
.portal-section-action {
  min-height: 50px;
  padding: 0 19px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--portal-line);
  border-radius: 0;
  color: var(--portal-ink);
  background: transparent;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 720;
  text-decoration: none;
  cursor: pointer;
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.portal-action.primary {
  border-color: var(--portal-accent-soft);
  color: var(--portal-bg);
  background: var(--portal-accent-soft);
}

.portal-action:hover,
.portal-section-action:hover {
  border-color: var(--portal-accent-soft);
  transform: translateY(-2px);
}

.portal-action.secondary:hover,
.portal-section-action:hover {
  background: var(--portal-surface);
}

.portal-index-note {
  margin: clamp(48px, 8vh, 80px) 0 0;
  color: oklch(0.58 0.025 255);
  font-size: 0.68rem;
  font-weight: 650;
  letter-spacing: 0.16em;
}

.obsidian-stage {
  position: relative;
  min-height: min(72vh, 720px);
  display: grid;
  place-items: center;
  perspective: 1200px;
  transform-style: preserve-3d;
  will-change: transform;
}

.obsidian-stage::before {
  content: "";
  position: absolute;
  width: min(72%, 470px);
  aspect-ratio: 1;
  border: 1px solid oklch(0.64 0.16 265 / 0.24);
  border-radius: 50%;
  box-shadow: 0 0 100px oklch(0.43 0.22 266 / 0.18);
}

.obsidian-object {
  position: relative;
  z-index: 2;
  width: min(100%, 590px);
  max-height: 72vh;
  overflow: visible;
  filter: drop-shadow(0 36px 54px rgb(0 0 0 / 0.58));
  transform-style: preserve-3d;
  will-change: transform;
}

.obsidian-glow {
  filter: blur(16px);
}

.obsidian-lines {
  mix-blend-mode: screen;
}

.obsidian-orbit {
  position: absolute;
  border: 1px solid oklch(0.66 0.08 264 / 0.22);
  border-radius: 50%;
}

.orbit-one {
  width: 84%;
  aspect-ratio: 1;
  transform: rotateX(68deg) rotateZ(-18deg);
}

.orbit-two {
  width: 62%;
  aspect-ratio: 1;
  transform: rotateY(66deg) rotateZ(22deg);
}

.obsidian-caption {
  position: absolute;
  right: 2%;
  bottom: 8%;
  color: var(--portal-muted);
  font-size: 0.67rem;
  letter-spacing: 0.16em;
  writing-mode: vertical-rl;
}

.portal-section {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(100px, 15vw, 190px) 0;
  border-top: 1px solid oklch(0.34 0.025 265 / 0.48);
}

.portal-section-heading {
  margin-bottom: clamp(54px, 8vw, 96px);
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(260px, 0.75fr);
  gap: clamp(32px, 7vw, 96px);
  align-items: end;
}

.portal-section-heading h2 {
  max-width: 14ch;
  margin: 0;
  color: var(--portal-ink);
  font-size: clamp(2.55rem, 5.8vw, 5rem);
  font-weight: 690;
  line-height: 0.98;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.portal-section-heading p {
  max-width: 34ch;
  margin: 0 0 4px;
  color: var(--portal-muted);
  font-size: 1rem;
  line-height: 1.75;
  text-wrap: pretty;
}

.portal-index-list,
.portal-work-gallery,
.portal-timeline {
  border-top: 1px solid var(--portal-line);
}

.portal-entry {
  position: relative;
  min-height: 128px;
  padding: 28px 8px;
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) minmax(130px, auto);
  gap: 24px;
  align-items: center;
  border-bottom: 1px solid var(--portal-line);
  color: var(--portal-ink);
  text-decoration: none;
  transition: background-color 220ms ease, padding-inline 220ms cubic-bezier(0.22, 1, 0.36, 1);
}

a.portal-entry:hover,
a.portal-entry:focus-visible {
  padding-inline: 20px;
  background: var(--portal-surface);
}

.portal-entry-count {
  color: oklch(0.61 0.06 264);
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
}

.portal-entry-copy {
  min-width: 0;
  display: grid;
  gap: 9px;
}

.portal-entry-copy strong {
  font-size: clamp(1.35rem, 2.6vw, 2.2rem);
  font-weight: 620;
  letter-spacing: -0.025em;
}

.portal-entry-copy small {
  max-width: 58ch;
  color: var(--portal-muted);
  font-size: 0.9rem;
  line-height: 1.65;
}

.portal-entry-meta {
  display: grid;
  justify-items: end;
  gap: 8px;
  color: var(--portal-muted);
  font-size: 0.76rem;
  font-variant-numeric: tabular-nums;
}

.portal-entry:not(.is-pending) .portal-entry-meta span {
  color: var(--portal-accent-soft);
}

.portal-entry.is-pending {
  color: oklch(0.8 0.012 255);
}

.portal-entry.is-pending .portal-entry-meta span {
  padding: 5px 8px;
  border: 1px solid var(--portal-line);
}

.portal-work-gallery .portal-entry {
  min-height: 190px;
}

.portal-work-gallery .portal-entry-copy strong {
  font-size: clamp(2rem, 5vw, 4.4rem);
}

.portal-game-stage {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-block: 1px solid var(--portal-line);
}

.portal-game-link {
  min-height: 360px;
  padding: clamp(28px, 5vw, 62px);
  display: grid;
  grid-template-columns: minmax(150px, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
  border: 0;
  color: var(--portal-ink);
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: background-color 220ms ease;
}

.portal-game-link + .portal-game-link {
  border-left: 1px solid var(--portal-line);
}

.portal-game-link:hover,
.portal-game-link:focus-visible {
  background: var(--portal-surface);
}

.portal-game-link > span:last-child {
  display: grid;
  gap: 12px;
}

.portal-game-link strong {
  font-size: clamp(1.55rem, 3vw, 2.7rem);
}

.portal-game-link small {
  color: var(--portal-muted);
  font-size: 0.84rem;
  line-height: 1.55;
}

.portal-game-board {
  width: 100%;
  max-width: 210px;
  aspect-ratio: 1;
  display: grid;
}

.portal-game-board.tic {
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  border: 1px solid var(--portal-line);
}

.portal-game-board.tic i {
  display: grid;
  place-items: center;
  border: 1px solid oklch(0.34 0.025 265 / 0.62);
  color: var(--portal-accent-soft);
  font-size: clamp(1.1rem, 3vw, 2.2rem);
  font-style: normal;
  font-weight: 760;
}

.portal-game-board.gomoku {
  position: relative;
  border: 1px solid oklch(0.62 0.07 78);
  background:
    linear-gradient(rgb(70 48 25 / 0.54) 1px, transparent 1px),
    linear-gradient(90deg, rgb(70 48 25 / 0.54) 1px, transparent 1px),
    oklch(0.69 0.11 76);
  background-size: 20% 20%;
}

.portal-game-board.gomoku i {
  position: absolute;
  width: 17%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: #111827;
  box-shadow: 0 3px 8px rgb(0 0 0 / 0.34);
}

.portal-game-board.gomoku i:nth-child(1) { left: 20%; top: 20%; }
.portal-game-board.gomoku i:nth-child(2) { left: 40%; top: 40%; background: #eff2f7; }
.portal-game-board.gomoku i:nth-child(3) { left: 60%; top: 40%; }
.portal-game-board.gomoku i:nth-child(4) { left: 40%; top: 60%; }
.portal-game-board.gomoku i:nth-child(5) { left: 60%; top: 60%; background: #eff2f7; }

.portal-section-action {
  margin-top: 26px;
}

.portal-updates .portal-entry {
  min-height: 148px;
}

.portal-empty {
  margin: 0;
  padding: 36px 8px;
  border-bottom: 1px solid var(--portal-line);
  color: var(--portal-muted);
}

.portal-footer {
  width: min(1180px, calc(100% - 40px));
  min-height: 260px;
  margin: 0 auto;
  padding: 70px 0;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px 32px;
  align-content: center;
  border-top: 1px solid var(--portal-line);
}

.portal-footer strong {
  font-size: clamp(1.8rem, 4vw, 3.6rem);
  letter-spacing: -0.035em;
}

.portal-footer p {
  margin: 0;
  color: var(--portal-muted);
}

.portal-footer a {
  grid-column: 2;
  grid-row: 1 / 3;
  align-self: center;
  color: var(--portal-ink);
  text-decoration-color: var(--portal-accent-soft);
  text-underline-offset: 6px;
}

body[data-view]:not([data-view="portal"]) .game-home,
body[data-view]:not([data-view="portal"]) .app-shell,
body[data-view]:not([data-view="portal"]) .leaderboard-shell,
body[data-view]:not([data-view="portal"]) .admin-shell {
  min-height: calc(100dvh - var(--nav-height));
}

.game-home .home-actions {
  top: 26px;
}

.game-home .home-actions .button {
  min-height: 48px;
}

@media (max-width: 1080px) {
  .portal-game-link {
    grid-template-columns: 1fr;
  }

  .portal-game-board {
    max-width: 180px;
  }
}

@media (max-width: 899px) {
  :root {
    --nav-height: 68px;
  }

  .site-nav-inner {
    width: min(100% - 24px, 680px);
    gap: 10px;
  }

  .site-menu-button {
    min-height: 42px;
    margin-left: auto;
    padding: 0 11px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--portal-line);
    color: var(--portal-ink);
    background: var(--portal-surface);
    font-size: 0.76rem;
  }

  .site-menu-button i,
  .site-menu-button i::before {
    content: "";
    width: 15px;
    height: 1px;
    display: block;
    background: currentColor;
    transition: transform 180ms ease;
  }

  .site-menu-button i::before {
    transform: translateY(5px);
  }

  .site-menu-button[aria-expanded="true"] i {
    transform: rotate(45deg);
  }

  .site-menu-button[aria-expanded="true"] i::before {
    transform: rotate(-90deg);
  }

  .site-menu {
    position: fixed;
    z-index: 35;
    top: calc(var(--nav-height) + 8px);
    right: 12px;
    left: 12px;
    margin: 0;
    padding: 18px;
    display: none;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
    border: 1px solid var(--portal-line);
    background: oklch(0.16 0.016 265 / 0.98);
    box-shadow: 0 22px 64px rgb(0 0 0 / 0.44);
  }

  .site-menu.is-open {
    display: grid;
  }

  .site-menu a {
    min-height: 48px;
    padding: 0 14px;
    display: flex;
    align-items: center;
    border: 1px solid transparent;
    background: var(--portal-surface);
  }

  .site-menu a::after {
    display: none;
  }

  .site-nav .account-button {
    min-width: 126px;
  }

  .site-nav .account-button-copy small {
    display: none;
  }

  .portal-hero {
    width: min(100% - 28px, 680px);
    min-height: auto;
    padding-top: calc(var(--nav-height) + 76px);
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .portal-hero h1 {
    max-width: none;
    font-size: clamp(3.8rem, 16vw, 5.6rem);
  }

  .portal-intro {
    max-width: 34ch;
  }

  .obsidian-stage {
    min-height: 500px;
  }

  .obsidian-object {
    width: min(92%, 500px);
  }

  .portal-section {
    width: min(100% - 28px, 680px);
    padding: 104px 0;
  }

  .portal-section-heading {
    margin-bottom: 52px;
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .portal-section-heading h2 {
    max-width: 12ch;
    font-size: clamp(2.5rem, 10vw, 4.4rem);
  }

  .portal-entry {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 14px;
  }

  .portal-entry-meta {
    grid-column: 2;
    justify-items: start;
    display: flex;
    flex-wrap: wrap;
  }

  .portal-game-stage {
    grid-template-columns: 1fr;
  }

  .portal-game-link {
    min-height: 0;
    grid-template-columns: minmax(128px, 0.72fr) minmax(0, 1.28fr);
  }

  .portal-game-link + .portal-game-link {
    border-top: 1px solid var(--portal-line);
    border-left: 0;
  }

  .portal-footer {
    width: min(100% - 28px, 680px);
  }

  .game-home .home-actions {
    position: static;
  }
}

@media (max-width: 540px) {
  .site-brand > span:last-child {
    display: none;
  }

  .site-nav .account-button {
    min-width: 104px;
    max-width: 118px;
  }

  .site-nav .account-display-name {
    max-width: 64px;
  }

  .portal-hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .portal-action {
    width: 100%;
  }

  .obsidian-stage {
    min-height: 390px;
  }

  .portal-index-note {
    letter-spacing: 0.1em;
  }

  .portal-entry {
    min-height: 0;
    padding-block: 24px;
  }

  .portal-entry-copy strong {
    font-size: 1.35rem;
  }

  .portal-game-link {
    padding: 28px 16px;
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 18px;
  }

  .portal-footer {
    grid-template-columns: 1fr;
  }

  .portal-footer a {
    grid-column: 1;
    grid-row: auto;
    margin-top: 18px;
  }
}

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

  .obsidian-stage,
  .obsidian-object,
  .portal-hero-copy,
  .portal-section-heading {
    transform: none !important;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .site-nav.is-scrolled,
  body[data-view]:not([data-view="portal"]) .site-nav,
  .site-menu {
    background: var(--portal-bg);
  }
}