:root {
  --blue: #057DF5;
  --white: #FFFFFF;
  --ink-btn: rgba(0, 24, 48, .3);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --sans: "Suisse Intl", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --ui: "Inter", system-ui, sans-serif;
  --credit: "Questrial", "Suisse Intl", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; }
body {
  background: var(--white);
  transition: background-color .9s var(--ease-out);
  -webkit-font-smoothing: antialiased;
}
body[data-screen="login"] { background: var(--blue); }

/* Desain 1440×1080 diskalakan utuh supaya placement sama persis dengan Figma */
#stage {
  position: absolute;
  left: 50%; top: 50%;
  width: 1440px; height: 1080px;
  transform: translate(-50%, -50%) scale(var(--s, 1));
}

.screen {
  position: absolute; inset: 0;
  opacity: 0; visibility: hidden;
  transition: opacity .8s var(--ease-out), visibility 0s linear .8s;
}
body[data-screen="loading"] #loading,
body[data-screen="login"] #login,
body[data-screen="player"] #player {
  opacity: 1; visibility: visible;
  transition: opacity .8s var(--ease-out) .25s, visibility 0s;
}

/* ---------- brand row ---------- */
.brand {
  position: absolute; left: 386px; width: 668px; height: 28px;
  display: flex; justify-content: space-between; align-items: center;
  font: 400 24px/1 var(--sans); color: var(--blue); letter-spacing: 0;
}
.brand img { width: 113px; height: 27px; }
.brand--bottom { top: 995px; }
.brand--top { top: 60px; }
.brand--white { color: var(--white); }

/* ---------- 01 loading ---------- */
.loading-title { position: absolute; left: 262px; top: 82px; width: 916px; }
.face-wrap { position: absolute; left: 548px; top: 604px; width: 337px; height: 326px; }
.face { position: absolute; inset: 0; width: 100%; height: 100%; }
.face-ghost { opacity: .12; }
.face-fill { clip-path: inset(calc(100% - var(--p, 0%)) 0 0 0); transition: clip-path .3s linear; }
.face-wrap { animation: boil .36s steps(1) infinite; }
.load-pct {
  position: absolute; left: 0; right: 0; top: 942px; margin: 0;
  text-align: center; font: 400 14px/1 var(--sans); letter-spacing: .1em; color: var(--blue);
}
#loading .loading-title { animation: rise 1.1s var(--ease-out) both; }

/* ---------- 02 login ---------- */
.login-title { position: absolute; left: 2px; top: 0; width: 1436px; }
body[data-screen="login"] .login-title { animation: rise 1s var(--ease-out) .2s both; }
#login-form { position: absolute; left: 472px; top: 655px; width: 507px; }
body[data-screen="login"] #login-form { animation: rise 1s var(--ease-out) .45s both; }

.glass {
  font: 400 19.9px/1 var(--ui); color: var(--white);
  border: 1px solid rgba(255, 255, 255, .55);
  border-radius: 17px;
  background: linear-gradient(160deg, rgba(255,255,255,.16), rgba(255,255,255,.03));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.45), inset 0 -8px 18px rgba(0,40,120,.12);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}
.glass--input {
  display: block; width: 507px; height: 58px; padding: 0 44px; outline: none;
  transition: border-color .3s, background .3s;
}
.glass--input::placeholder { color: rgba(255,255,255,.95); }
.glass--input:focus { border-color: #fff; background: linear-gradient(160deg, rgba(255,255,255,.24), rgba(255,255,255,.06)); }
.glass--input.shake { animation: shake .4s; }
.glass--btn {
  display: block; width: 173px; height: 49px; margin: 45px 0 0 168px;
  background: var(--ink-btn); cursor: pointer;
  transition: transform .25s var(--ease-out), background .25s;
}
.glass--btn:hover { background: rgba(0, 24, 48, .42); }
.glass--btn:active { transform: scale(.96); }

/* ---------- 03 player ---------- */
.speaker {
  position: absolute; left: 216px; top: 257px; width: 1006px; height: 566px;
  cursor: pointer;
  transform: translateY(var(--bob, 0px)) scale(var(--pump, 1));
  will-change: transform;
}
#frames {
  width: 100%; height: 100%; display: block;
  filter: blur(18px); transform: scale(.94); opacity: .85;
  transition: filter 1.4s var(--ease-out), transform 1.4s var(--ease-out), opacity 1.4s;
}
body.playing #frames { filter: blur(0); transform: scale(1); opacity: 1; }

.play {
  position: absolute; left: 50%; top: 512px; transform: translateX(-50%);
  height: 56px; padding: 0 30px 0 24px; gap: 12px;
  display: inline-flex; align-items: center;
  font: 400 19.9px/1 var(--ui); color: var(--white);
  background: var(--blue); border: 1px solid rgba(255,255,255,.5); border-radius: 17px;
  box-shadow: 0 18px 40px -14px rgba(5,125,245,.7), inset 0 1px 0 rgba(255,255,255,.4);
  cursor: pointer;
  transition: opacity .6s var(--ease-out), transform .6s var(--ease-out);
}
.play svg { width: 16px; height: 16px; }
.play:hover { transform: translateX(-50%) scale(1.04); }
.play::after {
  content: ""; position: absolute; inset: -1px; border-radius: 17px;
  border: 1px solid var(--blue); animation: ring 2.2s var(--ease-out) infinite;
}
body.playing .play { opacity: 0; pointer-events: none; transform: translateX(-50%) scale(.9); }

.now {
  position: absolute; left: 0; right: 0; top: 128px; margin: 0; text-align: center;
  font: 400 14px/1 var(--sans); letter-spacing: .08em; color: var(--blue);
  opacity: 0; transition: opacity .8s;
}
.now b { font-weight: 500; margin-right: 8px; }
body.playing .now { opacity: .8; }

.credits {
  position: absolute; left: 110px; top: 868px; width: 1219px; margin: 0;
  text-align: center; text-transform: uppercase;
  font: 400 17.2px/1.5 var(--credit); letter-spacing: .05em; color: var(--blue);
}
.credits b { font-weight: 700; }


/* ---------- motion ---------- */
@keyframes rise { from { opacity: 0; transform: translateY(40px); } to { opacity: 1; transform: none; } }
@keyframes boil {
  0%   { transform: rotate(-1.2deg) translate(0, 0); }
  33%  { transform: rotate(.8deg) translate(1px, -1px); }
  66%  { transform: rotate(-.4deg) translate(-1px, 1px); }
}
@keyframes ring { from { opacity: .7; transform: scale(1); } to { opacity: 0; transform: scale(1.25, 1.5); } }
@keyframes shake { 25% { transform: translateX(-8px); } 50% { transform: translateX(8px); } 75% { transform: translateX(-4px); } }

@media (prefers-reduced-motion: reduce) {
  .face-wrap { animation: none; }
}