:root {
  /* Core palette */
  --bg: #000000;
  --bg-deep: #020907;
  --bg-sheen: #03130f;
  --text: #d9d9d9;
  --muted: #999999;

  /* Primary accent: Racing Green */
  --accent: #00594f;
  --accent-soft: rgba(0, 89, 79, 0.15);
  --accent-glow: rgba(0, 89, 79, 0.4);

  /* Highlight accent: Lime Essence */
  --highlight: #a8ff60;
  --highlight-soft: rgba(168, 255, 96, 0.12);
  --highlight-glow: rgba(168, 255, 96, 0.3);

  /* Type */
  --font:
    "Montserrat", "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;

  --pointer-x: 50vw;
  --pointer-y: 50vh;
  --pointer-tilt-x: 0px;
  --pointer-tilt-y: 0px;
  --pointer-speed: 0;
}

/* Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Subtle ambient background */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(
      900px 500px at 20% 25%,
      rgba(0, 89, 79, 0.06),
      transparent 60%
    ),
    radial-gradient(
      800px 520px at 85% 70%,
      rgba(0, 89, 79, 0.04),
      transparent 65%
    ),
    radial-gradient(
      700px 420px at 55% 90%,
      rgba(0, 89, 79, 0.03),
      transparent 70%
    );
  opacity: 0.42;
  animation: drift 18s ease-in-out infinite;
}

body::after {
  content: "";
  position: fixed;
  inset: -12%;
  pointer-events: none;
  z-index: 0;
  opacity: calc(0.08 + (var(--pointer-speed) * 0.34));
  background:
    radial-gradient(
      28rem 28rem at var(--pointer-x) var(--pointer-y),
      rgba(11, 54, 44, 0.3),
      rgba(4, 19, 16, 0.18) 34%,
      transparent 68%
    ),
    radial-gradient(
      18rem 18rem at calc(var(--pointer-x) + var(--pointer-tilt-x))
        calc(var(--pointer-y) + var(--pointer-tilt-y)),
      rgba(118, 255, 188, 0.055),
      transparent 58%
    ),
    radial-gradient(
      40rem 28rem at calc(var(--pointer-x) - (var(--pointer-tilt-x) * 0.5))
        calc(var(--pointer-y) - (var(--pointer-tilt-y) * 0.5)),
      rgba(2, 18, 15, 0.72),
      transparent 72%
    );
  filter: blur(24px) saturate(112%);
  transform: translate3d(0, 0, 0);
  transition: opacity 240ms ease;
}

.pointer-wash {
  position: fixed;
  inset: -10%;
  pointer-events: none;
  z-index: 0;
  opacity: calc(0.05 + (var(--pointer-speed) * 0.5));
  background:
    radial-gradient(
      36rem 22rem at calc(var(--pointer-x) - (var(--pointer-tilt-x) * 2.4))
        calc(var(--pointer-y) - (var(--pointer-tilt-y) * 2.4)),
      rgba(0, 89, 79, 0.12),
      transparent 70%
    ),
    radial-gradient(
      24rem 16rem at calc(var(--pointer-x) - (var(--pointer-tilt-x) * 3.4))
        calc(var(--pointer-y) - (var(--pointer-tilt-y) * 3.4)),
      rgba(90, 224, 168, 0.07),
      transparent 64%
    ),
    repeating-radial-gradient(
      circle at calc(var(--pointer-x) + (var(--pointer-tilt-x) * 0.15))
        calc(var(--pointer-y) + (var(--pointer-tilt-y) * 0.15)),
      rgba(122, 255, 189, 0.05) 0 1.2%,
      rgba(9, 37, 31, 0.035) 2.6% 4.2%,
      rgba(0, 0, 0, 0) 7% 12%
    );
  mix-blend-mode: screen;
  filter: blur(34px);
  animation: liquid-breathe 14s ease-in-out infinite;
}

.ripple-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.ripple {
  position: absolute;
  transform: translate(-50%, -50%) scale(0.18);
  border-radius: 50%;
  border: 1px solid rgba(112, 255, 196, calc(var(--ripple-strength) * 0.24));
  box-shadow:
    0 0 0 1px rgba(6, 62, 52, calc(var(--ripple-strength) * 0.72)) inset,
    0 0 22px rgba(0, 89, 79, calc(var(--ripple-strength) * 0.26));
  background:
    radial-gradient(
      circle,
      rgba(102, 255, 195, calc(var(--ripple-strength) * 0.18)) 0,
      rgba(10, 53, 44, calc(var(--ripple-strength) * 0.24)) 24%,
      rgba(2, 13, 10, 0) 58%
    );
  mix-blend-mode: screen;
  filter: blur(0.2px);
  animation: ripple-wave var(--ripple-duration) cubic-bezier(0.12, 0.52, 0.22, 1)
    forwards;
}

@keyframes drift {
  0%,
  100% {
    transform: translate3d(0, 0, 0);
    opacity: 0.85;
  }
  50% {
    transform: translate3d(0, -8px, 0);
    opacity: 1;
  }
}

@keyframes liquid-breathe {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(0, -1.2%, 0) scale(1.035);
  }
}

@keyframes ripple-wave {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.18);
  }
  12% {
    opacity: var(--ripple-strength);
  }
  62% {
    opacity: calc(var(--ripple-strength) * 0.55);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(1.7);
  }
}

/* Layout */
.container {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2.25rem 1.5rem;
}

.content {
  width: 100%;
  max-width: 680px;
  text-align: center;
  backdrop-filter: blur(1px);
}

/* Brand */
.brand {
  position: relative;
  display: inline-block;
  margin-bottom: 1.25rem;
  padding-top: 1.4rem;
}

.heartbeat {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 6.4rem;
  height: 1.1rem;
  opacity: 0.98;
}

.heartbeat svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.heartbeat polyline {
  fill: none;
  stroke: var(--highlight);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 280;
  stroke-dashoffset: 280;
  filter: drop-shadow(0 0 6px var(--highlight-glow));
  animation: heartbeat-trace 2.4s ease-in-out infinite;
}

.brand h1 {
  margin: 0;
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: clamp(3rem, 7.5vw, 5rem);
  animation: fadeUp 900ms ease-out 120ms both;
}

/* Tagline */
.tagline {
  margin: 0 auto 2.5rem;
  max-width: 56ch;
  font-weight: 400;
  color: var(--text);
  letter-spacing: 0.02em;
  font-size: clamp(0.98rem, 2.2vw, 1.12rem);
  line-height: 1.85;
  animation: fadeUp 900ms ease-out 260ms both;
}

/* Status pill */
.status {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.35rem;
  border: 1px solid rgba(0, 89, 79, 0.8);
  border-radius: 999px;
  background: rgba(0, 89, 79, 0.08);
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.13em;
  font-size: 0.75rem;
  font-weight: 600;
  transition:
    background 220ms ease,
    box-shadow 220ms ease,
    transform 220ms ease,
    border-color 220ms ease;
  animation:
    fadeUp 900ms ease-out 420ms both,
    glow-pulse 3s ease-in-out 1s infinite;
}

.status::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--highlight);
  box-shadow: 0 0 10px var(--highlight-glow);
  opacity: 0.95;
  animation: pulse 2.4s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.status:hover {
  background: rgba(0, 89, 79, 0.16);
  border-color: rgba(0, 89, 79, 0.95);
  box-shadow: 0 0 24px var(--accent-glow);
  transform: translateY(-2px) scale(1.03);
}

.status:focus-visible {
  outline: 2px solid rgba(0, 89, 79, 0.85);
  outline-offset: 3px;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(18px);
    filter: blur(2px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.8;
    box-shadow: 0 0 8px var(--accent-glow);
    transform: scale(1);
  }
  50% {
    opacity: 1;
    box-shadow: 0 0 20px var(--accent-glow);
    transform: scale(1.15);
  }
}

@keyframes glow-pulse {
  0%,
  100% {
    box-shadow: 0 0 18px var(--accent-soft);
  }
  50% {
    box-shadow: 0 0 28px var(--accent-glow);
  }
}

/* Footer */
footer {
  position: fixed;
  left: 50%;
  bottom: 1.8rem;
  transform: translateX(-50%);
  z-index: 2;
  text-align: center;
  font-size: 0.75rem;
  color: var(--muted);
  opacity: 0.95;
  animation: fadeIn 900ms ease-out 650ms both;
  padding: 0 1rem;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 0.95;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }

  body::before {
    animation: none !important;
  }

  body::after,
  .pointer-wash,
  .ripple-layer {
    display: none;
  }
}

/* Small screens */
@media (max-width: 640px) {
  footer {
    bottom: 1.35rem;
  }

  .tagline {
    margin-bottom: 2.1rem;
  }

  .pointer-wash {
    opacity: calc(0.04 + (var(--pointer-speed) * 0.36));
  }
}

@keyframes heartbeat-trace {
  0% {
    stroke-dashoffset: 280;
    opacity: 0.2;
  }

  18% {
    opacity: 1;
  }

  75% {
    stroke-dashoffset: 0;
    opacity: 1;
  }

  100% {
    stroke-dashoffset: 0;
    opacity: 0.2;
  }
}