/* =======================================================================
   tarrow — landing page
   Layers: background stage (aura + canvas + vignette + grain + bloom),
   foreground: hero wordmark, tool tiles, footer.
   ======================================================================= */

/* --- Schrift (selbst gehostet, kein Google-CDN) ------------------------ */

@font-face {
  font-family: "Space Grotesk";
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url("fonts/space-grotesk-300-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF,
    U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020,
    U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: "Space Grotesk";
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url("fonts/space-grotesk-300-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --ink: #eef4f7;
  --line: rgba(140, 200, 230, 0.14);
  --line-strong: rgba(122, 226, 255, 0.4);
  --muted: rgba(178, 205, 220, 0.66);
  --muted-dim: rgba(150, 180, 200, 0.5);
}

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

html {
  height: 100%;
}

body {
  margin: 0;
  min-height: 100%;
  color: var(--ink);
  font-family: "Segoe UI", ui-sans-serif, system-ui, -apple-system, Roboto,
    Helvetica, Arial, sans-serif;
  color-scheme: dark;
  background: #050506;
  overflow-x: hidden;
  overscroll-behavior-y: none;
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

:focus-visible {
  outline: 2px solid rgba(122, 226, 255, 0.7);
  outline-offset: 3px;
  border-radius: 6px;
}

/* --- Bühne (fixierter Hintergrund) ------------------------------------- */

.stage {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(120% 90% at 50% 45%, #0b0d11 0%, #060608 55%, #030304 100%);
  animation: stage-in 1.8s 0.1s ease-out forwards;
}

@keyframes stage-in {
  to {
    opacity: 1;
  }
}

.aura {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 150vmax;
  height: 150vmax;
  margin: -75vmax 0 0 -75vmax;
  will-change: transform;
  mix-blend-mode: screen;
}

.aura-core {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(94, 196, 255, 0.15) 0%,
    rgba(94, 196, 255, 0.07) 26%,
    rgba(96, 118, 255, 0.035) 48%,
    transparent 70%
  );
  animation:
    aura-in 2.6s ease-out both,
    breathe 16s 2.6s ease-in-out infinite;
}

@keyframes aura-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes breathe {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.14);
  }
}

#field {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
}

.vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    120% 100% at 50% 50%,
    transparent 38%,
    rgba(0, 0, 0, 0.5) 76%,
    rgba(0, 0, 0, 0.86) 100%
  );
}

.grain {
  position: absolute;
  inset: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px 180px;
}

/* Einmaliger Lichtblitz beim Laden: die Szene "zündet" hinter der Wortmark. */
.bloom {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 130vmax;
  height: 130vmax;
  margin: -65vmax 0 0 -65vmax;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(198, 242, 255, 0.5) 0%,
    rgba(122, 226, 255, 0.16) 18%,
    transparent 46%
  );
  opacity: 0;
  animation: bloom 2.4s cubic-bezier(0.22, 0.61, 0.36, 1) 0.1s both;
}

@keyframes bloom {
  0% {
    opacity: 0;
    transform: scale(0.62);
  }
  16% {
    opacity: 0.85;
  }
  100% {
    opacity: 0;
    transform: scale(1.35);
  }
}

/* --- Inhalts-Ebene ----------------------------------------------------- */

.page {
  position: relative;
  z-index: 1;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
}

/* --- Hero -------------------------------------------------------------- */

.hero {
  display: grid;
  place-items: center;
  min-height: 62svh;
  padding: clamp(4rem, 13vh, 9rem) clamp(1rem, 6vw, 3rem) clamp(1.5rem, 5vh, 3rem);
}

.lockup {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(1rem, 3vh, 1.8rem);
}

.wordmark {
  margin: 0;
  display: flex;
  justify-content: center;
  font-family: "Space Grotesk", ui-sans-serif, system-ui, -apple-system, Roboto,
    Helvetica, Arial, sans-serif;
  font-size: clamp(2.7rem, 10vw, 6.5rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: 0.1em;
  color: #eef4f7;
  user-select: none;
  text-shadow:
    0 0 1px rgba(255, 255, 255, 0.35),
    0 0 44px rgba(122, 226, 255, 0.22),
    0 0 130px rgba(90, 150, 255, 0.14);
  animation: mark-glow 11s ease-in-out infinite;
}

@keyframes mark-glow {
  0%,
  100% {
    text-shadow:
      0 0 1px rgba(255, 255, 255, 0.3),
      0 0 38px rgba(122, 226, 255, 0.16),
      0 0 120px rgba(90, 150, 255, 0.1);
  }
  50% {
    text-shadow:
      0 0 1px rgba(255, 255, 255, 0.45),
      0 0 58px rgba(122, 226, 255, 0.3),
      0 0 160px rgba(90, 150, 255, 0.2);
  }
}

.letter {
  display: inline-block;
  will-change: opacity, filter, transform;
}

/* Letter-Spacing hängt sonst rechts am letzten Buchstaben -> optisch nicht zentriert */
.letter:last-child {
  margin-right: -0.1em;
}

/* --- Tool-Kacheln ------------------------------------------------------ */

.tools {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(0.75rem, 1.6vw, 1.1rem);
  width: min(1080px, 100% - 2 * clamp(1rem, 5vw, 3rem));
  margin: 0 auto;
  padding-bottom: clamp(2rem, 6vh, 4rem);
}

@media (min-width: 760px) {
  .tools {
    grid-template-columns: repeat(3, 1fr);
  }
}

.tile {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: clamp(1.1rem, 2.2vw, 1.5rem);
  padding-right: clamp(2.6rem, 4vw, 3.2rem);
  border-radius: 16px;
  border: 1px solid var(--line);
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.045),
    rgba(255, 255, 255, 0.012)
  );
  color: inherit;
  text-decoration: none;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  transition:
    transform 0.35s cubic-bezier(0.22, 0.61, 0.36, 1),
    border-color 0.35s ease,
    background 0.35s ease;
}

.tile:hover,
.tile:focus-visible {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  background: linear-gradient(
    180deg,
    rgba(122, 226, 255, 0.1),
    rgba(255, 255, 255, 0.02)
  );
}

.tile-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(122, 226, 255, 0.06);
  color: #bfe6f6;
}

.tile-icon svg {
  width: 1.35rem;
  height: 1.35rem;
}

.tile-title {
  display: block;
  font-family: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  font-size: 1.1rem;
  font-weight: 300;
  letter-spacing: 0.015em;
}

.tile-desc {
  display: block;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--muted);
}

.tile-arrow {
  position: absolute;
  right: clamp(1.1rem, 2.2vw, 1.5rem);
  bottom: clamp(1.1rem, 2.2vw, 1.5rem);
  font-size: 1rem;
  color: var(--muted-dim);
  transition: color 0.35s ease, transform 0.35s ease;
}

.tile:hover .tile-arrow,
.tile:focus-visible .tile-arrow {
  color: #bfe6f6;
  transform: translate(2px, -2px);
}

.chip {
  position: absolute;
  top: clamp(1.1rem, 2.2vw, 1.5rem);
  right: clamp(1.1rem, 2.2vw, 1.5rem);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted-dim);
}

/* --- Footer ------------------------------------------------------------ */

.site-foot {
  margin-top: auto;
  margin-inline: auto;
  width: min(1080px, 100% - 2 * clamp(1rem, 5vw, 3rem));
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  align-items: center;
  justify-content: space-between;
  padding: clamp(1.5rem, 4vh, 2.5rem) 0 clamp(1.5rem, 4vh, 2.5rem);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--muted-dim);
}

.site-foot a:hover,
.site-foot a:focus-visible {
  color: rgba(210, 235, 245, 0.9);
  border-bottom-color: currentColor;
}

/* --- Sekundärseite (404) ----------------------------------------------- */

.eyebrow {
  margin: 0 -0.36em 0 0;
  font-size: clamp(0.62rem, 1.4vw, 0.78rem);
  font-weight: 300;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  color: rgba(160, 200, 220, 0.55);
}

.stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

a.wordmark {
  text-decoration: none;
}

.wordmark--compact {
  font-size: clamp(2.4rem, 8vw, 5rem);
}

/* --- Einblend-Animation der Buchstaben --------------------------------- */

.js .letter {
  opacity: 0;
  filter: blur(16px);
  transform: translateY(0.14em);
  animation: letter-in 1.5s cubic-bezier(0.22, 0.61, 0.36, 1) forwards;
  animation-delay: calc(0.4s + var(--i) * 0.085s);
}

@keyframes letter-in {
  from {
    opacity: 0;
    filter: blur(16px);
    transform: translateY(0.14em);
  }
  to {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0);
  }
}

/* --- Ruhige Variante --------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  .stage {
    opacity: 1;
    animation: none;
  }

  .aura,
  .aura-core,
  .wordmark,
  .tile {
    animation: none;
    transition: none;
  }

  .aura {
    transform: none;
  }

  .bloom {
    animation: none;
    opacity: 0;
  }

  .js .letter {
    opacity: 1;
    filter: none;
    transform: none;
    animation: none;
  }
}