/* BDL Soft-Tip Nav-Button
   Festgehalten: Soft-Tip-Scheibe + laufender Neon-Glasrand + Orbitron weiß/Glow
   Farbe pro Button: --rim oder Klasse .nav-btn--green usw.
   Schrift Orbitron kommt aus dem <head> der Startseite.
*/

.nav-btn {
  --size: clamp(110px, 16vw, 180px);
  --rim: #3db8ff;
  position: relative;
  display: inline-block;
  width: var(--size);
  height: var(--size);
  padding: 0;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  background: transparent;
  overflow: visible;
  text-decoration: none;
  color: inherit;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  vertical-align: middle;
}

.nav-btn:focus-visible {
  outline: 2px solid var(--rim);
  outline-offset: 6px;
}

.nav-btn__face {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: url("board.jpg") center / cover no-repeat;
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 70%, transparent 71%);
          mask-image: radial-gradient(circle at 50% 50%, #000 70%, transparent 71%);
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.nav-btn__face::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(
    circle at 50% 50%,
    transparent 35%,
    rgba(0, 0, 0, 0.35) 62%,
    rgba(0, 0, 0, 0.65) 78%,
    rgba(0, 0, 0, 0.85) 100%
  );
  pointer-events: none;
}

.nav-btn__rim {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  z-index: 1;
  pointer-events: none;
  background: conic-gradient(
    from 0deg,
    transparent 0%,
    color-mix(in srgb, var(--rim) 45%, transparent) 10%,
    var(--rim) 18%,
    #ffffff 24%,
    var(--rim) 30%,
    color-mix(in srgb, var(--rim) 45%, transparent) 42%,
    transparent 55%,
    transparent 100%
  );
  -webkit-mask: radial-gradient(circle, transparent 57%, #000 58.5%, #000 71%, transparent 72.5%);
          mask: radial-gradient(circle, transparent 57%, #000 58.5%, #000 71%, transparent 72.5%);
  filter: saturate(1.25);
  box-shadow:
    0 0 16px color-mix(in srgb, var(--rim) 50%, transparent),
    0 0 36px color-mix(in srgb, var(--rim) 28%, transparent);
  animation: bdl-rim-rotate 10s linear infinite;
  will-change: transform;
}

.nav-btn__rim::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(
    from 180deg,
    transparent 0%,
    color-mix(in srgb, var(--rim) 35%, transparent) 18%,
    transparent 40%
  );
  -webkit-mask: radial-gradient(circle, transparent 57%, #000 59%, #000 70%, transparent 72%);
          mask: radial-gradient(circle, transparent 57%, #000 59%, #000 70%, transparent 72%);
  filter: blur(3px);
  opacity: 0.9;
}

@keyframes bdl-rim-rotate {
  to { transform: rotate(360deg); }
}

.nav-btn__label {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.06em;
  margin: 0;
  padding: 20%;
  text-align: center;
  font-family: Orbitron, system-ui, sans-serif;
  font-size: calc(var(--size) * 0.095);
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1.08;
  text-transform: uppercase;
  color: #f4f8ff;
  text-shadow:
     0 0 6px rgba(180, 220, 255, 0.55),
     0 0 14px rgba(100, 180, 255, 0.35),
    -1px -1px 1px rgba(255, 255, 255, 0.35),
     1px  1px 0 rgba(0, 0, 0, 0.7),
     2px  2px 3px rgba(0, 0, 0, 0.45);
  pointer-events: none;
  user-select: none;
}

.nav-btn__label--3 {
  font-size: calc(var(--size) * 0.085);
  padding: 18%;
}

.nav-btn__label span {
  display: block;
  max-width: 100%;
}

.nav-btn:hover .nav-btn__rim {
  box-shadow:
    0 0 22px color-mix(in srgb, var(--rim) 65%, transparent),
    0 0 44px color-mix(in srgb, var(--rim) 40%, transparent);
}

.nav-btn:active {
  transform: scale(0.97);
}

/* Randfarben — Inhalt ändern = Klasse oder --rim setzen (kein UI online) */
.nav-btn--blue    { --rim: #3db8ff; }
.nav-btn--green   { --rim: #2ecc71; }
.nav-btn--amber   { --rim: #f0b429; }
.nav-btn--magenta { --rim: #e056fd; }
.nav-btn--cyan    { --rim: #00e5ff; }

.nav-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: clamp(0.75rem, 2vw, 1.5rem);
  width: min(1100px, 96vw);
  margin-inline: auto;
  margin-block: 0.35rem 0.6rem;
  justify-items: center;
  position: relative;
  z-index: 2;
}

@media (max-width: 720px) {
  .nav-buttons-section {
    overflow-x: clip;
  }

  .nav-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: min(540px, 94vw);
    gap: 0.9rem;
  }

  .nav-btn {
    --size: min(230px, calc((94vw - 0.9rem) / 2 - 6px));
  }
}

/* Kein roter Trenner direkt unter den Scheiben */
.sound-rubric-wrap.section-breath::before {
  content: none;
}

.nav-portfolio.is-fx-paused .nav-btn__rim {
  animation-play-state: paused;
}

/* Legende: dasselbe grüne Randlicht wie bei einer Scheibe mit neuem Inhalt */
.nav-glow-key {
  display: flex;
  width: fit-content;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 0.85rem;
  padding: 0.32rem 0.75rem 0.32rem 0.38rem;
  border-radius: 999px;
  border: 1px solid rgba(46, 204, 113, 0.38);
  background: rgba(46, 204, 113, 0.07);
  color: #e9fff3;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.25;
}

.rubric--right .nav-glow-key {
  margin-left: auto;
}

.nav-glow-key__swatch {
  position: relative;
  flex-shrink: 0;
  width: 1.55rem;
  height: 1.55rem;
  border-radius: 50%;
  background: #070b10;
  box-shadow: 0 0 10px rgba(46, 204, 113, 0.45);
}

.nav-glow-key__swatch::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    transparent 0%,
    color-mix(in srgb, #2ecc71 45%, transparent) 10%,
    #2ecc71 18%,
    #ffffff 24%,
    #2ecc71 30%,
    color-mix(in srgb, #2ecc71 45%, transparent) 42%,
    transparent 55%,
    transparent 100%
  );
  -webkit-mask: radial-gradient(circle, transparent 52%, #000 57%, #000 74%, transparent 78%);
          mask: radial-gradient(circle, transparent 52%, #000 57%, #000 74%, transparent 78%);
  animation: bdl-rim-rotate 10s linear infinite;
}

@media (max-width: 640px) {
  .nav-glow-key {
    font-size: 0.72rem;
    max-width: 100%;
  }

  /* Zwei volle Zeilen behalten, auch wenn die allgemeine Rubrik umbrechen darf */
  .rubric--nav .rubric-lead--fotos .rubric-lead-line {
    white-space: nowrap;
  }
}

@media (max-width: 360px) {
  .rubric--nav .rubric-lead--fotos {
    font-size: 0.72rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-btn__rim,
  .nav-glow-key__swatch::before {
    animation: none;
  }
}