/* ---------------------------------------------------------------------------
   datacenter-3d.css — interaktives Rechenzentrumsmodell der Startseite
   Stil "Blaupause": Nachtblau mit feinem Cyan-Raster, gläserne Bedienflächen.
   Mobil stehen Kennzahlen und Bedienung unter dem Modell, ab 1024 px liegen
   sie als Overlays im Bild. Farben kommen aus dem Theme (tailwind/input.css).
   Kennzahlen und Bedienfeld: datacenter-3d-controls.css.
--------------------------------------------------------------------------- */

@layer components {
  .dc3d-section {
    --dc3d-glass: color-mix(in oklch, var(--color-navy-950) 84%, transparent);
    --dc3d-line: color-mix(in oklch, var(--color-navy-600) 55%, transparent);
    --dc3d-grid: color-mix(in oklch, var(--color-primary-400) 7%, transparent);
    padding-block: var(--space-section);
    color: var(--color-navy-200);
    background-color: var(--color-navy-950);
    background-image:
      radial-gradient(60rem 28rem at 50% 0%, color-mix(in oklch, var(--color-primary-400) 12%, transparent), transparent 70%),
      linear-gradient(var(--dc3d-grid) 1px, transparent 1px),
      linear-gradient(90deg, var(--dc3d-grid) 1px, transparent 1px);
    background-size: auto, 3rem 3rem, 3rem 3rem;
  }
  .dc3d-section .eyebrow {
    color: var(--color-primary-300);
  }
  .dc3d-section :is(h2, h3) {
    color: #fff;
  }
  .dc3d-section .link-arrow {
    color: var(--color-primary-300);
  }
  .dc3d-section .link-arrow:hover {
    color: #fff;
  }
  .dc3d-section :focus-visible {
    outline-color: var(--color-primary-300);
  }
  .dc3d [hidden] {
    display: none !important;
  }

  /* === BÜHNE === */
  .dc3d-frame {
    width: 100%;
    max-width: 96rem;
    margin-inline: auto;
  }
  .dc3d {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--color-navy-950);
  }
  .dc3d-viewport {
    position: relative;
    height: clamp(22rem, 64vh, 34rem);
    overflow: hidden;
    background:
      radial-gradient(ellipse at 50% 40%, var(--color-navy-900), var(--color-navy-950) 75%);
    border-block: 1px solid var(--color-navy-800);
  }
  .dc3d-viewport:focus-visible {
    outline: 3px solid var(--color-primary-300);
    outline-offset: -3px;
  }
  .dc3d-canvas {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
    cursor: grab;
  }
  .dc3d-canvas:active {
    cursor: grabbing;
  }
  .dc3d-canvas.is-pickable {
    cursor: pointer;
  }

  .dc3d-poster {
    position: absolute;
    inset: 0;
    display: grid;
    place-content: center;
    justify-items: center;
    gap: 0.75rem;
    padding: 1.5rem;
    text-align: center;
    background-image:
      linear-gradient(var(--dc3d-grid) 1px, transparent 1px),
      linear-gradient(90deg, var(--dc3d-grid) 1px, transparent 1px);
    background-size: 1.5rem 1.5rem;
  }
  .dc3d-poster-title {
    font-family: var(--font-heading);
    font-size: var(--text-h2);
    font-weight: 700;
    color: #fff;
  }
  .dc3d-poster-text {
    max-width: 30rem;
    font-size: var(--text-sm);
  }
  .dc3d.is-loading .dc3d-poster-title::after {
    content: "";
    display: block;
    width: 8rem;
    height: 3px;
    margin: 0.875rem auto 0;
    border-radius: 3px;
    background: linear-gradient(90deg, transparent, var(--color-primary-400), transparent) 0 0 / 50% 100% no-repeat,
      var(--color-navy-800);
    animation: dc3d-load 1.2s linear infinite;
  }
  @keyframes dc3d-load {
    from { background-position: -100% 0, 0 0; }
    to { background-position: 200% 0, 0 0; }
  }

  /* === BESCHRIFTUNGEN === */
  /* Eigener Stapelkontext: Beschriftungen liegen nie über den Bedienflächen. */
  .dc3d-labels {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
  }
  .dc3d-label {
    position: absolute;
    top: 0;
    left: 0;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    min-height: 1.625rem;
    margin: -0.8125rem 0 0 -0.55rem;
    padding: 0.2rem 0.65rem 0.2rem 0.3rem;
    border: 1px solid color-mix(in oklch, var(--color-primary-400) 45%, transparent);
    border-radius: 999px;
    background: var(--dc3d-glass);
    color: #fff;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1.2;
    white-space: nowrap;
    pointer-events: auto;
    cursor: pointer;
    transition: background-color var(--duration-fast) var(--ease-out), color var(--duration-fast) var(--ease-out);
  }
  .dc3d-label-dot {
    width: 0.625rem;
    height: 0.625rem;
    flex: none;
    border-radius: 50%;
    background: var(--color-primary-400);
    box-shadow: 0 0 0 3px color-mix(in oklch, var(--color-primary-400) 30%, transparent);
  }
  .dc3d-label:hover,
  .dc3d-label.is-active {
    background: #fff;
    color: var(--color-navy-900);
  }
  .dc3d-label.is-offscreen,
  .dc3d-labels.is-hidden .dc3d-label:not(.is-active) {
    visibility: hidden;
  }

  /* === WERKZEUGLEISTE, HINWEISE === */
  .dc3d-toolbar {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    display: flex;
    gap: 0.375rem;
  }
  .dc3d-tool {
    display: grid;
    place-items: center;
    width: 2.5rem;
    height: 2.5rem;
    border: 1px solid var(--dc3d-line);
    border-radius: var(--radius-sm);
    background: var(--dc3d-glass);
    color: var(--color-navy-100);
    cursor: pointer;
  }
  .dc3d-tool:hover {
    border-color: var(--color-primary-400);
    color: #fff;
  }
  .dc3d-tool[aria-pressed="true"] {
    border-color: var(--color-primary-400);
    background: var(--color-primary-600);
    color: #fff;
  }
  .dc3d-hint,
  .dc3d-status {
    position: absolute;
    left: 50%;
    width: max-content;
    max-width: calc(100% - 1.5rem);
    transform: translateX(-50%);
    padding: 0.55rem 0.9rem;
    border-radius: var(--radius-sm);
    background: var(--dc3d-glass);
    color: #fff;
    font-size: var(--text-sm);
    line-height: 1.45;
    pointer-events: none;
  }
  .dc3d-hint {
    top: 50%;
    border: 1px solid var(--dc3d-line);
  }
  .dc3d-status {
    bottom: 0.75rem;
    max-width: min(34rem, calc(100% - 1.5rem));
    border-left: 3px solid var(--color-primary-400);
    opacity: 0;
    transition: opacity var(--duration-slow) var(--ease-out);
  }
  .dc3d-status.is-visible {
    opacity: 1;
  }

  /* === INFO-FENSTER === */
  .dc3d-info {
    position: relative;
    padding: 1.25rem 1.25rem 1.5rem;
    border-bottom: 1px solid var(--color-navy-800);
    background: var(--color-navy-900);
    box-shadow: inset 3px 0 0 var(--color-primary-400);
  }
  .dc3d-info-kicker {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-primary-300);
  }
  .dc3d-info .heading-3 {
    margin-top: 0.375rem;
    padding-right: 2.5rem;
  }
  .dc3d-info .heading-3:focus {
    outline: none;
  }
  .dc3d-info-text {
    margin-top: 0.5rem;
    font-size: var(--text-sm);
    line-height: 1.6;
  }
  .dc3d-info-actions .btn-primary {
    white-space: normal;
  }
  .dc3d-info-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem 1.25rem;
    margin-top: 1rem;
  }
  .dc3d-info-close {
    position: absolute;
    top: 0.625rem;
    right: 0.625rem;
    display: grid;
    place-items: center;
    width: 2.5rem;
    height: 2.5rem;
    border: 1px solid var(--dc3d-line);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--color-navy-100);
    cursor: pointer;
  }
  .dc3d-info-close:hover {
    border-color: var(--color-primary-400);
    color: #fff;
  }

  /* === ERKLÄRUNG UNTER DEM MODELL === */
  .dc3d-paths {
    display: grid;
    gap: 2rem;
  }
  .dc3d-path {
    padding-top: 1.25rem;
    border-top: 1px solid var(--color-navy-700);
  }
  .dc3d-path .link-arrow {
    margin-top: 0.875rem;
  }
  .dc3d-note {
    max-width: 62ch;
    margin-top: 2.5rem;
    color: var(--color-navy-300);
  }
  .dc3d-note strong {
    display: block;
    color: #fff;
  }
  .dc3d-list {
    margin-top: 1.75rem;
    border-top: 1px solid var(--color-navy-800);
    border-bottom: 1px solid var(--color-navy-800);
  }
  .dc3d-list summary {
    padding-block: 1rem;
    font-family: var(--font-heading);
    font-weight: 600;
    color: #fff;
    cursor: pointer;
  }
  .dc3d-stations {
    display: grid;
    gap: 1.5rem 2rem;
    padding-bottom: 1.5rem;
  }
  .dc3d-station .heading-3 {
    font-size: 1rem;
  }
  .dc3d-station-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem 1.25rem;
    margin-top: 0.5rem;
    font-size: var(--text-sm);
  }
  .dc3d-station-links a {
    color: var(--color-primary-300);
    text-decoration: underline;
    text-underline-offset: 3px;
  }
  .dc3d-station-links a:hover {
    color: #fff;
  }

  @media (min-width: 640px) {
    .dc3d-frame {
      padding-inline: 1.5rem;
    }
    .dc3d {
      border: 1px solid var(--color-navy-800);
      border-radius: var(--radius-xl);
      overflow: hidden;
    }
    .dc3d-viewport {
      border-block-start: 0;
    }
    .dc3d-stations {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  @media (min-width: 768px) {
    .dc3d-paths {
      grid-template-columns: repeat(3, 1fr);
    }
  }

  /* === OVERLAY-LAYOUT ab 1024 px === */
  @media (min-width: 1024px) {
    .dc3d-frame {
      padding-inline: 2rem;
    }
    .dc3d {
      display: block;
      height: clamp(40rem, 86vh, 54rem);
    }
    .dc3d-stations {
      grid-template-columns: repeat(3, 1fr);
    }
    .dc3d-viewport {
      position: absolute;
      inset: 0;
      height: auto;
      border: 0;
    }
    .dc3d-toolbar {
      top: 1rem;
      right: 1rem;
    }
    .dc3d-stats,
    .dc3d-panel,
    .dc3d-info {
      position: absolute;
      border: 1px solid var(--dc3d-line);
      border-radius: var(--radius-lg);
      background: var(--dc3d-glass);
      backdrop-filter: blur(8px);
    }
    .dc3d-info {
      top: 4.25rem;
      right: 1rem;
      width: 22rem;
      max-height: calc(100% - 5.25rem);
      overflow: auto;
      box-shadow: inset 3px 0 0 var(--color-primary-400);
    }
    .dc3d-status {
      bottom: 1rem;
      left: auto;
      right: 1rem;
      transform: none;
      max-width: min(26rem, calc(100% - 38rem));
    }
  }
  .dc3d.is-fullscreen {
    width: 100%;
    height: 100%;
    border: 0;
    border-radius: 0;
    overflow-y: auto;
  }
  .dc3d.is-fullscreen .dc3d-viewport {
    height: 75vh;
  }
  @media (min-width: 1024px) {
    .dc3d.is-fullscreen .dc3d-viewport {
      height: auto;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    .dc3d.is-loading .dc3d-poster-title::after {
      animation: none;
      background: var(--color-primary-400);
    }
    .dc3d-status {
      transition: none;
    }
  }
}