:root {
  --brand-blue: #2047FF;
  --brand-sky: #20B6FF;
  --white: #ffffff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { width: 100%; min-height: 100%; }
button { font: inherit; }

body {
  font-family: "Tajawal", system-ui, sans-serif;
  background: linear-gradient(160deg, var(--brand-sky) 0%, var(--brand-blue) 100%);
  overflow: hidden;
}

.intro {
  position: fixed; inset: 0; z-index: 50;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: clamp(20px, 4vh, 34px);
  padding: max(24px, env(safe-area-inset-top)) max(20px, env(safe-area-inset-right))
    max(24px, env(safe-area-inset-bottom)) max(20px, env(safe-area-inset-left));
  overflow: hidden;
  background:
    radial-gradient(ellipse at 50% 44%, rgba(255, 255, 255, 0.12), transparent 42%),
    linear-gradient(160deg, var(--brand-sky) 0%, var(--brand-blue) 100%);
  transition: opacity 0.8s ease, visibility 0.8s ease;
}
.intro::before,
.intro::after {
  content: "";
  position: absolute;
  z-index: -1;
  width: clamp(220px, 46vw, 560px);
  aspect-ratio: 1;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 50%;
  pointer-events: none;
}
.intro::before { top: -28vw; right: -18vw; }
.intro::after { bottom: -34vw; left: -22vw; width: clamp(280px, 58vw, 700px); }
.intro.out { opacity: 0; visibility: hidden; }

.intro-text {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 8px 12px;
  width: min(100%, 700px);
  color: rgba(255, 255, 255, 0.8);
  font-size: clamp(0.95rem, 2.4vw, 1.2rem);
  font-weight: 700;
  line-height: 1.5;
  text-align: center;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 1s ease, transform 1s ease;
}
.intro-text b { color: var(--white); }
.intro.merge .intro-text { opacity: 1; transform: none; }

.skip {
  position: absolute; left: max(20px, env(safe-area-inset-left));
  bottom: max(20px, env(safe-area-inset-bottom));
  min-width: 88px; min-height: 44px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  color: var(--white);
  padding: 9px 20px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 700;
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.skip:hover { background: rgba(255, 255, 255, 0.2); border-color: rgba(255, 255, 255, 0.5); }
.skip:active { transform: scale(0.97); }
.skip:focus-visible { outline: 3px solid var(--white); outline-offset: 4px; }

.lockup {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: min(100%, 900px);
}
.lockup img { display: block; max-width: 40%; object-fit: contain; }
.lockup .sep {
  flex: 0 0 2px;
  height: clamp(58px, 11vw, 112px);
  margin-inline: clamp(12px, 4vw, 38px);
  background: rgba(255, 255, 255, 0.48);
  border-radius: 99px;
}

.lockup.big { gap: 0; transition: gap 1.2s cubic-bezier(0.7, 0, 0.2, 1); }
.lockup.big img {
  width: auto;
  height: clamp(64px, 17vw, 150px);
  opacity: 0;
  transition: opacity 1s ease, transform 1.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.lockup.big img:first-child { transform: translateX(60px); }
.lockup.big img:last-child { transform: translateX(-60px); }
.lockup.big .sep { transform: scaleY(0); transition: transform 0.9s ease 0.5s; }
.intro.in .lockup.big img { opacity: 1; transform: none; }
.intro.in .lockup.big .sep { transform: scaleY(1); }

@media (max-width: 520px) {
  .intro { gap: clamp(18px, 4vh, 28px); }
  .lockup.big img { height: clamp(62px, 19vw, 94px); }
  .lockup .sep { height: clamp(52px, 15vw, 76px); margin-inline: clamp(10px, 4vw, 18px); }
  .intro-text { gap: 6px 9px; }
  .skip { left: max(16px, env(safe-area-inset-left)); bottom: max(16px, env(safe-area-inset-bottom)); }
}

@media (max-width: 360px) {
  .intro { padding-inline: max(14px, env(safe-area-inset-left)); }
  .lockup.big img { height: 60px; }
  .lockup .sep { height: 48px; margin-inline: 9px; }
  .intro-text { font-size: 0.9rem; }
}

@media (max-height: 480px) and (orientation: landscape) {
  .intro { gap: 12px; padding-block: 12px 64px; }
  .lockup.big img { height: min(22vh, 88px); }
  .lockup .sep { height: min(19vh, 68px); }
  .intro-text { font-size: 0.95rem; }
  .skip { min-height: 40px; bottom: max(10px, env(safe-area-inset-bottom)); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}