/* ---------------------------------------------------------------
   Joyki — personal card
   ---------------------------------------------------------------- */

@font-face {
  font-family: "Outfit";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../assets/fonts/outfit-latin.woff2") format("woff2");
}

/* ---------- Theme tokens ---------- */

:root {
  --bg: #0a0b10;
  --text: #eceef6;
  --text-dim: rgba(236, 238, 246, 0.45);
  --line: rgba(236, 238, 246, 0.12);
  --toggle-bg: rgba(236, 238, 246, 0.04);
  --toggle-bg-hover: rgba(236, 238, 246, 0.09);
  --glow-a: 99, 91, 255;      /* indigo  */
  --glow-b: 168, 85, 247;     /* violet  */
  --backdrop-opacity: 0.5;
  --sparkle-color: 255, 255, 255;
  --sparkle-scale: 0.55;
  --grain-opacity: 0.035;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #f6f6f8;
  --text: #14161d;
  --text-dim: rgba(20, 22, 29, 0.45);
  --line: rgba(20, 22, 29, 0.1);
  --toggle-bg: rgba(20, 22, 29, 0.04);
  --toggle-bg-hover: rgba(20, 22, 29, 0.08);
  --glow-a: 129, 140, 248;
  --glow-b: 196, 181, 253;
  --backdrop-opacity: 0.55;
  --sparkle-color: 70, 75, 95;
  --sparkle-scale: 0.22;
  --grain-opacity: 0.04;
  color-scheme: light;
}

/* ---------- Base ---------- */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  font-family: "Outfit", system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  display: grid;
  place-items: center;
  overflow: hidden;
  transition: background-color 0.6s ease, color 0.6s ease;
  -webkit-font-smoothing: antialiased;
}

/* Fine grain, barely there — gives the flat background some texture */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

main {
  position: relative;
  z-index: 2;
  padding: 0 24px;
}

/* ---------- The word ---------- */

.word {
  font-size: clamp(3.5rem, 14vw, 9.5rem);
  font-weight: 250;
  letter-spacing: 0.06em;
  line-height: 1;
  white-space: nowrap;
  user-select: none;
}

.word span {
  display: inline-block;
  opacity: 0;
  filter: blur(14px);
  transform: translateY(0.22em) scale(1.08);
  animation: emerge 1.5s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  animation-delay: calc(0.25s + var(--i) * 90ms);
  will-change: opacity, filter, transform;
}

@keyframes emerge {
  to {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0) scale(1);
  }
}

/* ---------- Backdrop: glow + sparkles ---------- */

.backdrop {
  position: fixed;
  inset: 0;
  overflow: hidden;
  z-index: 0;
  opacity: var(--backdrop-opacity);
  transition: opacity 0.6s ease;
}

.glow {
  position: absolute;
  width: 60vmax;
  height: 60vmax;
  border-radius: 50%;
  filter: blur(90px);
}

.glow-a {
  top: -22vmax;
  right: -14vmax;
  background: radial-gradient(circle, rgb(var(--glow-a)) 0%, transparent 62%);
  opacity: 0.32;
  animation: drift-a 46s ease-in-out infinite alternate;
}

.glow-b {
  bottom: -24vmax;
  left: -16vmax;
  background: radial-gradient(circle, rgb(var(--glow-b)) 0%, transparent 62%);
  opacity: 0.22;
  animation: drift-b 38s ease-in-out infinite alternate;
}

@keyframes drift-a {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(-9vmax, 7vmax, 0) scale(1.12); }
}

@keyframes drift-b {
  from { transform: translate3d(0, 0, 0) scale(1.08); }
  to   { transform: translate3d(8vmax, -6vmax, 0) scale(0.96); }
}

.sparkles {
  position: absolute;
  inset: 0;
}

.sparkles i {
  --peak: 0.5;
  position: absolute;
  border-radius: 50%;
  background: rgb(var(--sparkle-color));
  opacity: 0;
  animation: twinkle var(--dur, 6s) ease-in-out var(--delay, 0s) infinite;
}

@keyframes twinkle {
  0%, 100% { opacity: 0; transform: scale(0.7); }
  50%      { opacity: calc(var(--peak) * var(--sparkle-scale, 0.5)); transform: scale(1); }
}

/* ---------- Theme toggle ---------- */

.theme-toggle {
  position: fixed;
  top: 22px;
  right: 22px;
  z-index: 3;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--toggle-bg);
  color: var(--text-dim);
  cursor: pointer;
  transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.theme-toggle:hover {
  background: var(--toggle-bg-hover);
  color: var(--text);
}

.theme-toggle svg {
  position: absolute;
  transition: opacity 0.3s ease, transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.icon-moon { opacity: 0; transform: rotate(-60deg) scale(0.6); }
.icon-sun  { opacity: 1; transform: rotate(0deg) scale(1); }

:root[data-theme="light"] .icon-moon { opacity: 1; transform: rotate(0deg) scale(1); }
:root[data-theme="light"] .icon-sun  { opacity: 0; transform: rotate(60deg) scale(0.6); }

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  .word span {
    animation: none;
    opacity: 1;
    filter: none;
    transform: none;
  }

  .glow-a,
  .glow-b,
  .sparkles i {
    animation: none;
  }

  .sparkles i {
    animation: none;
    opacity: calc(var(--peak) * var(--sparkle-scale, 0.5) * 0.4);
  }
}