/* ============================================================
   style.css — Technology-Review.com
   ------------------------------------------------------------
   Gestalterisches Leitmotiv: analoge Tuschezeichnung trifft
   digital-präzise Bewegung, inszeniert wie ein Filmstill.
   Farbwelt: tiefes Anthrazit/Blauschwarz (nie reines Schwarz),
   warmes Tusche-Gold als Akzent, kühles Papierweiß für Linien.
   ============================================================ */

:root {
  /* Farbpalette */
  --bg-deep:      #0b0e15;   /* Seitengrund, Blauschwarz */
  --bg-elevated:  #10141d;   /* leicht angehobene Flächen */
  --ink:          #e8e4d8;   /* "Tusche auf Papier" — warmes Weiß */
  --ink-dim:      #9a968a;   /* zurückgenommene Linien/Texte */
  --ink-faint:    #565349;   /* feinste Hilfslinien */
  --accent:       #d8b45a;   /* Tusche-Gold, sparsam eingesetzt */
  --accent-soft:  rgba(216, 180, 90, 0.14);
  --sweep:        #7fd4c1;   /* kühles Radar-Grün des Scanstrahls */

  /* Typografie */
  --font-sans: "Inter", -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-hand: "Caveat", "Segoe Print", "Bradley Hand", cursive;

  /* Bewegung */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg-deep);
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 1.6;
  overflow-x: hidden;
  /* Papieranmutung: hauchfeiner Verlauf statt flacher Fläche */
  background-image:
    radial-gradient(ellipse 120% 80% at 50% -10%, #131826 0%, var(--bg-deep) 55%),
    radial-gradient(ellipse 90% 60% at 50% 110%, #0d1119 0%, var(--bg-deep) 60%);
  background-attachment: fixed;
}

::selection { background: var(--accent-soft); color: var(--ink); }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ============================================================
   Kino-Textur: Film-Grain + Vignette
   Grain als animiertes feTurbulence-Rauschen (Data-URI),
   Vignette als fixiertes Radial-Overlay. Beide nicht interaktiv.
   ============================================================ */

.grain {
  position: fixed;
  inset: -100px;
  z-index: 90;
  pointer-events: none;
  opacity: 0.055;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="240" height="240"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="0.9" numOctaves="2" stitchTiles="stitch"/><feColorMatrix type="saturate" values="0"/></filter><rect width="100%" height="100%" filter="url(%23n)"/></svg>');
  animation: grain-shift 0.9s steps(4) infinite;
}

@keyframes grain-shift {
  0%   { transform: translate(0, 0); }
  25%  { transform: translate(-32px, 18px); }
  50%  { transform: translate(24px, -28px); }
  75%  { transform: translate(-18px, -14px); }
  100% { transform: translate(0, 0); }
}

.vignette {
  position: fixed;
  inset: 0;
  z-index: 91;
  pointer-events: none;
  background: radial-gradient(ellipse 105% 90% at 50% 45%,
              transparent 55%, rgba(4, 6, 10, 0.55) 100%);
}

/* ============================================================
   Header — nur der Schriftzug, Reduktion als Wertigkeit
   ============================================================ */

.site-header {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 10;
  display: flex;
  justify-content: center;
  padding: 2.2rem 1.5rem 0;
}

.wordmark {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.55rem;
}

.wordmark-text {
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.42em;
  text-indent: 0.42em;          /* optischer Ausgleich für letter-spacing */
  text-transform: uppercase;
  color: var(--ink);
  opacity: 0;
  animation: fade-down 1.4s var(--ease-out) 0.3s forwards;
}

.wordmark-tld { color: var(--ink-dim); }

/* der minimale animierte Akzent: eine feine Linie, die sich zieht */
.wordmark-line {
  display: block;
  height: 1px;
  width: 0;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  animation: line-grow 1.8s var(--ease-out) 1s forwards;
}

@keyframes fade-down {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes line-grow { to { width: 120px; } }

/* ============================================================
   Hero — der Radar als Bühne
   ============================================================ */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6.5rem 1rem 3rem;
  perspective: 1200px;           /* für die Parallax-Tiefe des Radars */
  overflow: hidden;
}

/* --- Seedance-Hintergrundloop, dezent unter den Radar gelegt --- */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  /* CSS-Fallback, falls weder Video noch Poster laden */
  background: radial-gradient(ellipse 70% 55% at 50% 48%,
              #161c2a 0%, var(--bg-deep) 70%);
}

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 2.5s ease;
  filter: saturate(0.85) brightness(0.9);
}

.hero-video.is-ready { opacity: 0.45; }   /* Video bleibt Kulisse, nie Hauptdarsteller */

/* sanfte Abdunklung des Videos zu den Rändern, damit der Radar trägt */
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 75% 65% at 50% 48%,
              rgba(11, 14, 21, 0.1) 30%, rgba(11, 14, 21, 0.92) 100%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1060px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* --- Claim --- */
.hero-claim {
  text-align: center;
  font-size: clamp(1.5rem, 3.4vw, 2.4rem);
  font-weight: 300;
  line-height: 1.25;
  letter-spacing: 0.01em;
  margin-bottom: 1rem;
  opacity: 0;
  animation: fade-down 1.6s var(--ease-out) 0.7s forwards;
}

.claim-kicker {
  display: block;
  font-family: var(--font-hand);
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  color: var(--accent);
  letter-spacing: 0.06em;
  margin-bottom: 0.4rem;
}

/* --- Radar-Bühne --- */
.radar-stage {
  position: relative;
  /* so bemessen, dass Claim + Radar + Hint gemeinsam in den ersten Viewport passen */
  width: min(92vw, calc(100svh - 350px), 860px);
  will-change: transform;
  transition: transform 0.2s linear;   /* wird von JS (Parallax) weich geführt */
}

.radar { width: 100%; }
.radar svg { display: block; width: 100%; height: auto; overflow: visible; }

.hero-hint {
  margin-top: 0.8rem;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  text-transform: uppercase;
  opacity: 0;
  animation: fade-down 1.6s var(--ease-out) 3.2s forwards;
}

/* ============================================================
   Radar-Innereien (Klassen werden von radar.js gesetzt)
   ============================================================ */

/* Ringe & Sektorlinien: zeichnen sich beim Laden ein.
   pathLength="1" in radar.js macht die Dash-Animation einheitlich. */
.sketch-ring, .sketch-spoke {
  fill: none;
  stroke: var(--ink-faint);
  stroke-width: 1.1;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  animation: draw-in 2.4s var(--ease-out) forwards;
  animation-delay: var(--delay, 0s);
}

.sketch-spoke { stroke-width: 0.9; opacity: 0.75; }

@keyframes draw-in { to { stroke-dashoffset: 0; } }

/* Ring-Beschriftungen (Zeithorizonte) */
.ring-label {
  fill: var(--ink-faint);
  font-family: var(--font-sans);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0;
  animation: point-appear 1.2s var(--ease-out) forwards;
  animation-delay: var(--delay, 2s);
}

/* Sektor-Labels: handschriftlich, klickbar */
.sector-label {
  fill: var(--ink-dim);
  font-family: var(--font-hand);
  font-size: 29px;
  letter-spacing: 0.03em;
  cursor: pointer;
  opacity: 0;
  animation: point-appear 1.4s var(--ease-out) forwards;
  animation-delay: var(--delay, 1.5s);
  transition: fill 0.4s ease;
}
.sector-label:hover, .sector-label:focus-visible { fill: var(--accent); outline: none; }

/* Technologiepunkte */
.tech-point {
  cursor: pointer;
  opacity: 0;
  animation: point-appear 0.9s var(--ease-out) forwards;
  animation-delay: var(--delay, 2s);
  outline: none;
}

@keyframes point-appear {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.tech-point .point-marker {
  fill: var(--bg-deep);
  stroke: var(--ink);
  stroke-width: 1.6;
  transition: transform 0.45s var(--ease-out), stroke 0.3s ease, fill 0.3s ease;
  transform-origin: center;
  transform-box: fill-box;
}

/* zweite, leicht versetzte Kontur für den handgezeichneten Doppelstrich */
.tech-point .point-marker-echo {
  fill: none;
  stroke: var(--ink-dim);
  stroke-width: 0.8;
  opacity: 0.55;
  transition: transform 0.45s var(--ease-out);
  transform-origin: center;
  transform-box: fill-box;
}

.tech-point .point-label {
  fill: var(--ink-dim);
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 400;
  letter-spacing: 0.02em;
  transition: fill 0.3s ease;
  paint-order: stroke;
  stroke: rgba(11, 14, 21, 0.85);   /* Halo, damit Labels über Linien lesbar bleiben */
  stroke-width: 3px;
  stroke-linejoin: round;
}

.tech-point:hover .point-marker,
.tech-point:focus-visible .point-marker,
.tech-point.is-active .point-marker {
  transform: scale(1.65);
  stroke: var(--accent);
  fill: rgba(216, 180, 90, 0.12);
}
.tech-point:hover .point-marker-echo,
.tech-point:focus-visible .point-marker-echo,
.tech-point.is-active .point-marker-echo { transform: scale(1.9); }

.tech-point:hover .point-label,
.tech-point:focus-visible .point-label,
.tech-point.is-active .point-label { fill: var(--ink); }

.tech-point:focus-visible .point-marker { stroke: var(--sweep); }

/* Aufblitzen, wenn der Sweep einen Punkt überstreicht */
.tech-point.is-pinged .point-marker {
  animation: ping-flash 1.4s ease-out;
}

@keyframes ping-flash {
  0%   { stroke: var(--sweep); fill: rgba(127, 212, 193, 0.35);
         filter: drop-shadow(0 0 7px rgba(127, 212, 193, 0.9)); }
  100% { stroke: var(--ink); fill: var(--bg-deep); filter: none; }
}

/* Sweep-Gruppe: Rotation macht JS (requestAnimationFrame) */
.sweep-group { pointer-events: none; }
.sweep-edge {
  stroke: var(--sweep);
  stroke-width: 1.6;
  opacity: 0.8;
  filter: drop-shadow(0 0 6px rgba(127, 212, 193, 0.8));
}
.sweep-wedge { fill: var(--sweep); }

/* Rakete + Flugbahn */
.rocket-trajectory {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.3;
  stroke-dasharray: 5 6;
  opacity: 0.75;
  animation: trajectory-march 30s linear infinite;
}

@keyframes trajectory-march { to { stroke-dashoffset: -220; } }

.rocket-sketch { transition: transform 0.45s var(--ease-out); transform-box: fill-box; transform-origin: center; }
.rocket-flame { animation: flame-flicker 0.9s ease-in-out infinite alternate; transform-box: fill-box; transform-origin: top center; }

@keyframes flame-flicker {
  from { opacity: 0.55; transform: scaleY(0.85); }
  to   { opacity: 1;    transform: scaleY(1.15); }
}

/* Sektor-Fokus: aktiver Sektor bleibt, alles andere dimmt */
.radar svg.has-focus .sector-group:not(.is-focused) { opacity: 0.13; transition: opacity 0.6s ease; }
.radar svg .sector-group { transition: opacity 0.6s ease; }
.radar svg.has-focus .sector-label:not(.is-focused) { opacity: 0.25; }

/* ============================================================
   Tooltip
   ============================================================ */

.radar-tooltip {
  position: fixed;
  z-index: 95;
  max-width: 290px;
  padding: 0.85rem 1rem 0.9rem;
  background: rgba(16, 20, 29, 0.94);
  border: 1px solid rgba(216, 180, 90, 0.35);
  border-radius: 3px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(6px);
  pointer-events: none;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.25s ease, transform 0.25s var(--ease-out);
  font-size: 0.82rem;
  line-height: 1.5;
}

.radar-tooltip.is-visible { opacity: 1; transform: translateY(0); }

.radar-tooltip .tt-name {
  font-family: var(--font-hand);
  font-size: 1.25rem;
  color: var(--accent);
  line-height: 1.2;
  margin-bottom: 0.35rem;
}

.radar-tooltip .tt-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.9rem;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 0.45rem;
}

.radar-tooltip .tt-meta strong { color: var(--ink); font-weight: 500; }
.radar-tooltip .tt-desc { color: var(--ink-dim); }

/* ============================================================
   Footer
   ============================================================ */

.site-footer {
  position: relative;
  z-index: 5;
  max-width: 720px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 4rem;
  text-align: center;
}

.footer-source {
  font-size: 0.95rem;
  color: var(--ink-dim);
}

.source-link {
  font-weight: 500;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.source-arrow {
  display: inline-block;
  transition: transform 0.35s var(--ease-out);
}
.source-link:hover .source-arrow { transform: translateX(4px); }

.footer-source-sub {
  font-size: 0.78rem;
  color: var(--ink-faint);
  margin-top: 0.3rem;
}

/* --- ausklappbares Impressum --- */
.imprint {
  margin-top: 2.6rem;
  border-top: 1px solid rgba(232, 228, 216, 0.08);
  text-align: left;
}

.imprint summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1.1rem 0;
  cursor: pointer;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  transition: color 0.3s ease;
  user-select: none;
}
.imprint summary::-webkit-details-marker { display: none; }
.imprint summary:hover, .imprint summary:focus-visible { color: var(--ink-dim); outline: none; }

.imprint-chevron {
  width: 7px; height: 7px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  transition: transform 0.35s var(--ease-out);
}
.imprint[open] .imprint-chevron { transform: rotate(-135deg) translateY(-2px); }

.imprint-body {
  padding: 0.4rem 0.2rem 1.4rem;
  font-size: 0.82rem;
  color: var(--ink-dim);
  animation: fade-down 0.5s var(--ease-out);
}

.imprint-body h2 {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 0.7rem;
}

.imprint-body p { margin-bottom: 0.7rem; }

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 640px) {
  .site-header { padding-top: 1.6rem; }
  .wordmark-text { font-size: 0.72rem; letter-spacing: 0.32em; text-indent: 0.32em; }
  .hero { padding-top: 5rem; }
  .radar-stage { width: min(96vw, 96vw); }
  .hero-hint { font-size: 0.66rem; }

  /* Tooltip wird auf Touch-Geräten zur fixierten Karte am unteren Rand */
  .radar-tooltip {
    left: 50% !important;
    right: auto !important;
    top: auto !important;
    bottom: 14px !important;
    transform: translateX(-50%) translateY(6px);
    max-width: min(92vw, 340px);
  }
  .radar-tooltip.is-visible { transform: translateX(-50%) translateY(0); }
}

/* ============================================================
   Reduzierte Bewegung: ruhige Variante
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  .grain { animation: none; }
  .sketch-ring, .sketch-spoke { animation: none; stroke-dashoffset: 0; }
  .ring-label, .sector-label, .tech-point, .wordmark-text,
  .hero-claim, .hero-hint { animation: none; opacity: 1; }
  .wordmark-line { animation: none; width: 120px; }
  .rocket-trajectory { animation: none; }
  .rocket-flame { animation: none; }
  .tech-point.is-pinged .point-marker { animation: none; }
  html { scroll-behavior: auto; }
}