body {
  min-height: 100svh;
  overflow: hidden;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.portal-shell,
.splash-view,
.app-view {
  min-height: 100svh;
}

.portal-shell {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--color-bg);
}

.splash-view,
.app-view {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}

.splash-view {
  z-index: 2;
  padding: clamp(1.5rem, 4vh, 3rem) var(--space-4);
  background: radial-gradient(circle at 50% 40%, rgba(45, 8, 5, 0.14), transparent 35%), var(--color-bg);
  opacity: 1;
  visibility: visible;
  transition: opacity var(--motion-medium) var(--ease-out), visibility 0s;
}

.splash-view__grain {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.16;
  background-image: repeating-linear-gradient(0deg, transparent 0 3px, rgba(255,255,255,.014) 4px);
  mask-image: radial-gradient(circle, black, transparent 75%);
}

.splash-content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: min(100%, 52rem);
  text-align: center;
}

.portal-symbol {
  position: relative;
  width: min(100%, 35rem);
  height: var(--portal-door-height);
  margin-bottom: clamp(1.7rem, 4vh, 2.8rem);
  opacity: 0;
  transform: translateY(10px);
  animation: reveal-symbol 700ms var(--ease-out) 300ms forwards;
}

.world-doors {
  position: absolute;
  left: 5%;
  bottom: 8%;
  display: flex;
  align-items: flex-end;
  gap: clamp(.65rem, 2vw, 1.2rem);
  width: 58%;
  height: 78%;
  perspective: 800px;
}

.world-door {
  position: relative;
  display: block;
  width: clamp(1.3rem, 4vw, 2.6rem);
  border: 1px solid rgba(255,255,255,.12);
  border-bottom-color: rgba(255,255,255,.28);
  background: linear-gradient(to top, var(--world-color), transparent 72%);
  box-shadow: inset 0 -12px 22px color-mix(in srgb, var(--world-color) 32%, transparent);
  opacity: .55;
  transform: rotateY(18deg);
}

.world-door::after {
  position: absolute;
  right: -1px;
  bottom: -2px;
  width: 1px;
  height: 45%;
  content: "";
  background: var(--world-color);
  box-shadow: 0 0 9px var(--world-color);
}

.world-door--one { --world-color: #76170f; height: 48%; opacity: .28; }
.world-door--two { --world-color: #17365d; height: 62%; opacity: .36; }
.world-door--three { --world-color: #4e255f; height: 75%; opacity: .4; }
.world-door--four { --world-color: #7e173e; height: 88%; opacity: .46; }
.world-door--five { --world-color: #a04b18; height: 100%; opacity: .5; }

.main-door {
  position: absolute;
  right: 8%;
  bottom: 2%;
  width: var(--portal-door-width);
  height: 96%;
  filter: drop-shadow(0 0 22px rgba(215, 25, 11, .22));
  transform-origin: 50% 100%;
}

.main-door__frame {
  position: absolute;
  inset: 0;
  padding: clamp(4px, .55vw, 7px);
  border: 1px solid rgba(245,245,245,.8);
  background: linear-gradient(100deg, rgba(255,255,255,.74), rgba(255,255,255,.07) 14%, transparent 49%, rgba(255,96,58,.62));
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.08), var(--portal-glow-soft);
}

.main-door__world {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background:
    radial-gradient(circle at 68% 18%, rgba(255,112,70,.22), transparent 22%),
    linear-gradient(to bottom, #080606 0 55%, #260806 56%, #090302 78%);
}

.main-door__world::after {
  position: absolute;
  inset: 56% -25% auto;
  height: 55%;
  content: "";
  background: radial-gradient(ellipse at 50% 0, rgba(255,58,29,.5), transparent 55%);
  opacity: .45;
}

.main-door__horizon {
  position: absolute;
  top: 56%;
  left: 5%;
  width: 90%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-red-bright), transparent);
  box-shadow: 0 0 14px rgba(255,50,32,.7);
}

.main-door__star {
  position: absolute;
  width: 2px;
  height: 2px;
  border-radius: 50%;
  background: rgba(245,245,245,.75);
  box-shadow: 0 0 5px rgba(245,245,245,.5);
}

.main-door__star--one { top: 20%; left: 24%; }
.main-door__star--two { top: 32%; right: 18%; opacity: .5; }
.main-door__star--three { top: 43%; left: 53%; opacity: .35; }

.main-door__threshold {
  position: absolute;
  left: -12%;
  bottom: -2px;
  width: 124%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(245,245,245,.86), var(--color-red-bright), transparent);
  box-shadow: 0 0 15px rgba(255,50,32,.7);
}

.portal-symbol__flare {
  position: absolute;
  right: -2%;
  bottom: -10%;
  width: 62%;
  height: 40%;
  border-radius: 50%;
  opacity: 0;
  background: radial-gradient(ellipse, rgba(255,50,32,.16), transparent 68%);
  animation: reveal-flare 700ms var(--ease-out) 650ms forwards;
}

.splash-brand h1 {
  color: var(--color-white);
  font-size: clamp(1.65rem, 4vw, 2.6rem);
  font-weight: 600;
  letter-spacing: var(--tracking-brand);
  line-height: 1;
  text-indent: var(--tracking-brand);
  opacity: 0;
  transform: translateY(8px);
  animation: reveal-copy 500ms var(--ease-out) 900ms forwards;
}

.splash-brand p {
  margin-top: var(--space-3);
  color: #a82b20;
  font-size: clamp(.55rem, 1.4vw, .7rem);
  font-weight: 650;
  letter-spacing: .26em;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(6px);
  animation: reveal-copy 500ms var(--ease-out) 1120ms forwards;
}

.portal-entry {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  min-width: 12.5rem;
  margin-top: clamp(2rem, 5vh, 3.5rem);
  padding: .8rem .15rem;
  border-bottom: 1px solid rgba(255,255,255,.26);
  background: transparent;
  color: var(--color-white);
  cursor: pointer;
  font-size: var(--font-xs);
  font-weight: 650;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(6px);
  animation: reveal-copy 500ms var(--ease-out) 1320ms forwards;
  transition: color var(--motion-fast), border-color var(--motion-fast), letter-spacing var(--motion-fast);
}

.portal-entry::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  width: 0;
  height: 1px;
  content: "";
  background: var(--color-red-bright);
  box-shadow: 0 0 10px rgba(255,50,32,.65);
  transition: width var(--motion-medium) var(--ease-out);
}

.portal-entry:hover { color: var(--color-white); border-color: transparent; letter-spacing: .22em; }
.portal-entry:hover::after, .portal-entry:focus-visible::after { width: 100%; }
.portal-entry:active { transform: translateY(1px); }

.transition-light {
  position: absolute;
  z-index: 5;
  top: 43%;
  left: 58%;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  pointer-events: none;
  opacity: 0;
  background: #fff4ef;
  box-shadow: 0 0 40px 20px rgba(255,50,32,.28);
  transform: translate(-50%, -50%) scale(.2);
}

.portal-shell.is-entering .main-door {
  animation: door-open 820ms var(--ease-out) forwards;
}

.portal-shell.is-entering .transition-light {
  animation: flood-light 820ms var(--ease-out) forwards;
}

.portal-shell.is-entering .splash-content {
  animation: recede 820ms var(--ease-out) forwards;
}

.app-view {
  z-index: 1;
  padding: var(--space-5);
  opacity: 0;
  visibility: hidden;
  background: radial-gradient(circle at 50% 45%, rgba(215,25,11,.055), transparent 30%), var(--color-bg);
  transition: opacity var(--motion-medium) var(--ease-out), visibility 0s;
}

.app-placeholder { width: min(100%, 40rem); text-align: center; }
.app-placeholder__brand { color: var(--color-white); font-size: var(--font-sm); font-weight: 650; letter-spacing: var(--tracking-brand); text-indent: var(--tracking-brand); }
.app-placeholder__line { display: block; width: 1px; height: 4.5rem; margin: var(--space-5) auto; background: linear-gradient(to bottom, var(--color-red), transparent); }
.app-placeholder h2 { color: var(--color-white); font-size: clamp(2rem, 5vw, 4.5rem); font-weight: 500; letter-spacing: var(--tracking-tight); }
.app-placeholder > p:not(.app-placeholder__brand) { margin-top: var(--space-3); color: var(--color-muted); font-size: var(--font-xs); font-weight: 650; letter-spacing: var(--tracking-wide); text-transform: uppercase; }
.back-link { margin-top: var(--space-7); padding: .8rem 0; border-bottom: 1px solid var(--color-border); background: transparent; color: var(--color-muted); cursor: pointer; font-size: var(--font-xs); letter-spacing: .12em; text-transform: uppercase; transition: color var(--motion-fast), border-color var(--motion-fast); }
.back-link:hover { color: var(--color-white); border-color: var(--color-border-hover); }

.portal-shell[data-state="app"] .splash-view { opacity: 0; visibility: hidden; }
.portal-shell[data-state="app"] .app-view { z-index: 3; opacity: 1; visibility: visible; }

@keyframes reveal-symbol { to { opacity: 1; transform: none; } }
@keyframes reveal-flare { to { opacity: 1; } }
@keyframes reveal-copy { to { opacity: 1; transform: none; } }
@keyframes door-open { 45% { filter: drop-shadow(0 0 48px rgba(255,50,32,.55)); transform: scale(1.035); } 100% { filter: drop-shadow(0 0 80px rgba(255,50,32,.65)); transform: scale(1.09); } }
@keyframes flood-light { 0% { opacity: 0; } 40% { opacity: .42; } 100% { opacity: 0; transform: translate(-50%, -50%) scale(190); } }
@keyframes recede { 60% { opacity: .8; transform: scale(1.015); } 100% { opacity: 0; transform: scale(1.04); } }

@media (max-width: 1024px) {
  :root { --portal-door-height: clamp(13rem, 30vh, 18rem); }
  .portal-symbol { width: min(100%, 31rem); }
}

@media (max-width: 768px) {
  :root { --portal-door-width: clamp(7.5rem, 28vw, 10rem); --portal-door-height: clamp(13.5rem, 34vh, 18rem); }
  .splash-view { padding-block: var(--space-4); }
  .portal-symbol { width: min(94vw, 27rem); margin-bottom: clamp(1.4rem, 3vh, 2rem); }
  .world-doors { left: 1%; width: 64%; gap: .6rem; }
  .main-door { right: 4%; }
  .splash-brand h1 { font-size: clamp(1.45rem, 7vw, 2rem); }
  .portal-entry { margin-top: clamp(1.7rem, 4vh, 2.5rem); }
  .transition-light { left: 62%; }
}

@media (max-width: 430px) {
  :root { --portal-door-height: clamp(13rem, 32vh, 16.5rem); }
  .portal-symbol { width: min(100%, 23rem); }
  .world-doors { left: 0; bottom: 7%; width: 59%; gap: .45rem; }
  .world-door { width: clamp(1rem, 7vw, 1.7rem); }
  .main-door { right: 2%; height: 94%; }
  .splash-brand p { max-width: 25rem; line-height: 1.6; }
  .portal-entry { min-width: 11.5rem; }
}

@media (max-height: 650px) {
  :root { --portal-door-height: 11.5rem; }
  .portal-symbol { margin-bottom: 1.25rem; }
  .portal-entry { margin-top: 1.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-delay: 0ms !important; transition-duration: .01ms !important; }
  .portal-symbol, .portal-symbol__flare, .splash-brand h1, .splash-brand p, .portal-entry { opacity: 1; transform: none; }
  .portal-shell.is-entering .transition-light { display: none; }
}