:root {
  --bg-1: #0f0606;
  --bg-2: #250909;
  --bg-3: #401111;
  --gold-1: #ffe08a;
  --gold-2: #ffbf47;
  --gold-3: #ff8d2e;
  --wine: #6d0f17;
  --text: #fff6ea;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  min-height: 100%;
  overflow: hidden;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background:
    radial-gradient(circle at 18% 30%, rgba(255, 176, 59, 0.14), transparent 22%),
    radial-gradient(circle at 82% 22%, rgba(255, 129, 62, 0.12), transparent 20%),
    linear-gradient(135deg, var(--bg-1) 0%, var(--bg-2) 52%, var(--bg-3) 100%);
}

body {
  min-height: 100vh;
}

.intro-shell {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  align-items: center;
  justify-items: center;
  isolation: isolate;
}

.ambient {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(30px);
}

.ambient-top {
  top: -14rem;
  right: -8rem;
  width: 40rem;
  height: 40rem;
  width: min(40rem, 44vw);
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(255, 191, 71, 0.14), transparent 65%);
}

.ambient-bottom {
  bottom: -16rem;
  left: -10rem;
  width: 44rem;
  height: 44rem;
  width: min(44rem, 54vw);
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(255, 120, 47, 0.14), transparent 66%);
}

.intro-stage {
  position: relative;
  width: 100%;
  max-width: 74rem;
  width: min(100%, 74rem);
  min-height: 100vh;
  display: grid;
  place-items: center;
  align-items: center;
  justify-items: center;
  padding: 2rem;
}

.burst-ring,
.burst-ring::before,
.burst-ring::after {
  position: absolute;
  inset: 50% auto auto 50%;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  content: "";
}

.burst-ring {
  width: 26rem;
  height: 26rem;
  width: min(26rem, 58vw);
  aspect-ratio: 1;
  border: 1px solid rgba(255, 215, 125, 0.22);
  opacity: 0;
  animation:
    ringReveal 0.42s ease-out 0s forwards,
    ringPulse 1.55s ease-in-out 0.4s infinite;
}

.burst-ring::before {
  inset: 1.2rem;
  border: 1px solid rgba(255, 186, 74, 0.18);
}

.burst-ring::after {
  inset: -1.4rem;
  border: 1px solid rgba(255, 138, 46, 0.14);
}

.scene {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}

.scene-shield {
  animation: sceneShieldExit 0.62s cubic-bezier(.4, 0, .2, 1) 1.08s forwards;
}

.shield-core {
  position: relative;
  width: 30rem;
  height: 30rem;
  width: min(30rem, 68vw);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  align-items: center;
  justify-items: center;
}

.shield-core::before {
  content: "";
  position: absolute;
  inset: 8%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 223, 136, 0.42), rgba(255, 170, 40, 0.12) 42%, transparent 72%);
  filter: blur(14px);
  animation: coreGlow 0.56s ease-out 0.02s forwards;
  opacity: 0;
}

.shield-core::after {
  content: "";
  position: absolute;
  width: 146%;
  height: 146%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 167, 38, 0.12), transparent 58%);
  filter: blur(30px);
  animation: auraPulse 1.5s ease-in-out 0.3s infinite alternate;
}

.shield-halo {
  position: absolute;
  inset: -8%;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(255, 214, 111, 0.24), transparent 46%),
    conic-gradient(
      from 180deg,
      rgba(255, 183, 77, 0) 0deg,
      rgba(255, 214, 111, 0.32) 68deg,
      rgba(255, 145, 64, 0) 146deg,
      rgba(255, 214, 111, 0.22) 240deg,
      rgba(255, 183, 77, 0) 360deg
    );
  filter: blur(2px);
  opacity: 0;
  animation:
    haloReveal 0.5s ease-out 0.04s forwards,
    haloSpin 4.8s linear 0.56s infinite;
}

.shield-image {
  position: relative;
  width: 94%;
  height: auto;
  filter:
    drop-shadow(0 0 26px rgba(255, 197, 92, 0.42))
    drop-shadow(0 26px 52px rgba(0, 0, 0, 0.52));
  transform: scale(0.2) translateY(2rem);
  opacity: 0;
  animation:
    shieldImpact 0.54s cubic-bezier(.16, 1.1, .3, 1) 0s forwards,
    shieldFloat 1.75s ease-in-out 0.68s infinite alternate;
}

.shield-flare {
  position: absolute;
  width: 10rem;
  height: 10rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.88), rgba(255, 214, 118, 0.34) 26%, transparent 64%);
  mix-blend-mode: screen;
  filter: blur(3px);
  opacity: 0;
}

.shield-flare-a {
  animation: flarePassA 0.5s ease-out 0.16s forwards;
}

.shield-flare-b {
  width: 7rem;
  height: 7rem;
  animation: flarePassB 0.58s ease-out 0.46s forwards;
}

.scene-logo {
  opacity: 0;
  animation: sceneLogoEnter 0.68s cubic-bezier(.2, .8, .2, 1) 1.34s forwards;
}

.logo-card {
  position: relative;
  width: 50rem;
  max-width: 72vw;
  width: min(50rem, 72vw);
  display: grid;
  place-items: center;
  align-items: center;
  justify-items: center;
  overflow: visible;
  isolation: isolate;
}

.logo-full {
  width: 100%;
  height: auto;
  opacity: 0;
  transform: translateY(2.6rem) scale(0.9);
  filter:
    drop-shadow(0 12px 28px rgba(0, 0, 0, 0.34))
    drop-shadow(0 0 12px rgba(255, 182, 75, 0.12));
  animation:
    logoRise 0.68s cubic-bezier(.2, .8, .2, 1) 1.38s forwards,
    logoFloat 2s ease-in-out 2.08s infinite alternate;
  position: relative;
  z-index: 1;
}

.clave-diagonal {
  position: absolute;
  width: 31rem;
  width: min(31rem, 48vw);
  max-width: 46%;
  height: auto;
  left: 0;
  top: 47%;
  transform: translate(-92%, -50%) rotate(21deg) scale(1);
  transform-origin: center center;
  opacity: 0;
  mix-blend-mode: screen;
  filter:
    blur(2.4px)
    brightness(1.12)
    saturate(1.04)
    drop-shadow(0 0 14px rgba(255, 223, 162, 0.22))
    drop-shadow(0 0 32px rgba(255, 170, 74, 0.18));
  animation: claveSweep 1.08s linear 1.32s forwards;
  pointer-events: none;
  z-index: 2;
}

.intro-copy {
  position: absolute;
  left: 50%;
  bottom: 12vh;
  transform: translateX(-50%);
  text-align: center;
  opacity: 1;
  animation: copyPulse 1.8s ease-in-out 0.15s infinite alternate;
}

.intro-kicker {
  margin: 0;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-weight: 800;
  font-size: clamp(0.95rem, 1.8vw, 1.25rem);
}

.intro-bar {
  width: 12rem;
  max-width: 44vw;
  width: min(12rem, 44vw);
  height: 0.34rem;
  margin: 0.85rem auto 0;
  position: relative;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 230, 180, 0.16);
  border: 1px solid rgba(255, 191, 71, 0.22);
  box-shadow: inset 0 0 10px rgba(255, 188, 69, 0.08);
}

.intro-bar::before {
  content: "";
  position: absolute;
  inset: 0;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--gold-1), var(--gold-2), var(--gold-3));
  box-shadow:
    0 0 16px rgba(255, 191, 71, 0.34),
    0 0 28px rgba(255, 141, 46, 0.18);
  animation: loadingBarFill 2.85s linear forwards;
}

.is-fading {
  animation: pageFadeOut 0.38s ease forwards;
}

@keyframes ringReveal {
  from {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.55);
  }
  to {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

@keyframes ringPulse {
  from {
    transform: translate(-50%, -50%) scale(0.98);
  }
  to {
    transform: translate(-50%, -50%) scale(1.04);
  }
}

@keyframes coreGlow {
  from {
    opacity: 0;
    transform: scale(0.7);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes auraPulse {
  from {
    opacity: 0.34;
    transform: scale(0.94);
  }
  to {
    opacity: 0.62;
    transform: scale(1.08);
  }
}

@keyframes haloReveal {
  from {
    opacity: 0;
    transform: scale(0.64) rotate(0deg);
  }
  to {
    opacity: 1;
    transform: scale(1) rotate(0deg);
  }
}

@keyframes haloSpin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes shieldImpact {
  0% {
    opacity: 0;
    transform: scale(0.2) translateY(2rem);
  }
  52% {
    opacity: 1;
    transform: scale(1.12) translateY(-0.6rem);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes shieldFloat {
  from {
    transform: translateY(-0.3rem) scale(1);
  }
  to {
    transform: translateY(0.55rem) scale(1.028);
  }
}

@keyframes flarePassA {
  0% {
    opacity: 0;
    transform: translate(-6.5rem, 5.4rem) scale(0.25);
  }
  30% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate(7.6rem, -6.2rem) scale(1.35);
  }
}

@keyframes flarePassB {
  0% {
    opacity: 0;
    transform: translate(4rem, -4rem) scale(0.3);
  }
  35% {
    opacity: 0.9;
  }
  100% {
    opacity: 0;
    transform: translate(-4.6rem, 4.8rem) scale(1.1);
  }
}

@keyframes sceneShieldExit {
  from {
    opacity: 1;
    transform: scale(1);
    filter: blur(0);
  }
  to {
    opacity: 0;
    transform: scale(1.16) translateY(-1rem);
    filter: blur(10px);
  }
}

@keyframes sceneLogoEnter {
  from {
    opacity: 0;
    transform: translateY(1rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes logoRise {
  from {
    opacity: 0;
    transform: translateY(2.6rem) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes logoFloat {
  from {
    transform: translateY(-0.25rem) scale(1);
  }
  to {
    transform: translateY(0.45rem) scale(1.012);
  }
}

@keyframes claveSweep {
  0% {
    opacity: 0;
    transform: translate(-96%, -50%) rotate(21deg) scale(1);
  }
  12% {
    opacity: 0.22;
  }
  58% {
    opacity: 0.24;
    transform: translate(134%, -50%) rotate(21deg) scale(1);
  }
  68% {
    opacity: 0.08;
  }
  76% {
    opacity: 0.01;
    transform: translate(188%, -50%) rotate(21deg) scale(1.01);
  }
  100% {
    opacity: 0;
    transform: translate(206%, -50%) rotate(21deg) scale(1.02);
  }
}

@keyframes copyPulse {
  from {
    opacity: 0.72;
    transform: translateX(-50%) translateY(0);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(-0.1rem);
  }
}

@keyframes loadingBarFill {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

@keyframes pageFadeOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

@media (max-width: 720px) {
  .shield-core {
    width: 20rem;
    height: 20rem;
    width: min(20rem, 76vw);
  }

  .logo-card {
    width: 25rem;
    max-width: 78vw;
    width: min(25rem, 78vw);
  }

  .clave-diagonal {
    width: 14rem;
    width: min(14rem, 38vw);
    max-width: 42%;
    top: 48%;
  }

  .intro-copy {
    bottom: 10vh;
  }

  .intro-kicker {
    letter-spacing: 0.16em;
  }
}