/* ============================================================
   HyGaia FX Kit — 15 Premium UI Effects
   Version: 2.0 · 2026-03-15
   Usage: Add classes to your HTML elements. That's it.

   Set A (7): Hero-Gradient, SVG-Shadow, Scroll-Progress,
              Scroll-Hint, Share-Button, Glow-Border, Tabular-Nums
   Set B (8): Reveal-on-Scroll, Conic-Gauge, Animated-Counter,
              Morphing-Blob, 3D-Tilt, Confetti, SVG-Line-Draw, Mask-Reveal
   ============================================================ */

/* ---- Brand Tokens ---- */
:root {
  --hg-navy: #2A4759;
  --hg-teal: #5EA2A6;
  --hg-teal-light: #7bc0c4;
  --hg-bg: #f7fafa;
}

/* ============================================================
   A · ATMENDER HERO-GRADIENT
   Usage: <section class="hg-hero-gradient"> ... </section>
   ============================================================ */
.hg-hero-gradient {
  background: linear-gradient(135deg, var(--hg-navy), #1a2f3d, var(--hg-teal), var(--hg-navy));
  background-size: 400% 400%;
  animation: hg-breathe 12s ease-in-out infinite;
  color: #fff;
}

@keyframes hg-breathe {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}

/* ============================================================
   B · DROP-SHADOW AUF SVGs
   Usage: <svg class="hg-svg-shadow"> oder <img class="hg-svg-shadow">
   ============================================================ */
.hg-svg-shadow {
  filter: drop-shadow(2px 4px 6px rgba(42, 71, 89, 0.25));
  transition: filter 0.3s ease;
}
.hg-svg-shadow:hover {
  filter: drop-shadow(3px 6px 10px rgba(42, 71, 89, 0.35));
}

/* ============================================================
   C · SCROLL-PROGRESS-BAR
   Usage: <div class="hg-scroll-progress"></div> (direkt nach <body>)
   JS required: hygaia-fx.js
   ============================================================ */
.hg-scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--hg-teal), var(--hg-teal-light));
  z-index: 9999;
  transition: width 0.1s linear;
  border-radius: 0 2px 2px 0;
}

/* ============================================================
   X1 · "SCROLLE WEITER" PFEIL
   Usage: <div class="hg-scroll-hint" data-hg-scroll-hint>
            <svg>...</svg> oder eigener Content
          </div>
   Verschwindet automatisch nach erstem Scroll (JS).
   ============================================================ */
.hg-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  animation: hg-bounce 2s ease-in-out infinite;
  opacity: 1;
  transition: opacity 0.5s ease;
  cursor: default;
  z-index: 10;
}
.hg-scroll-hint.hidden {
  opacity: 0;
  pointer-events: none;
}
.hg-scroll-hint svg {
  width: 28px;
  height: 28px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
}

@keyframes hg-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(10px); }
}

/* ============================================================
   X2 · SHARE-BUTTON
   Usage: <button class="hg-share-btn" data-hg-share
            data-share-title="Mein Ergebnis"
            data-share-text="Mein HyGaia-Score: 82/100">
            Ergebnis teilen
          </button>
   JS required: hygaia-fx.js
   ============================================================ */
.hg-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border: none;
  border-radius: 28px;
  background: linear-gradient(135deg, var(--hg-teal), var(--hg-navy));
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.hg-share-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(94, 162, 166, 0.35);
}
.hg-share-btn:active {
  transform: translateY(0);
}

/* Toast notification for clipboard fallback */
.hg-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--hg-navy);
  color: #fff;
  padding: 10px 24px;
  border-radius: 24px;
  font-size: 13px;
  font-weight: 500;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 10000;
  pointer-events: none;
}
.hg-toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ============================================================
   X3 · ROTIERENDE GRADIENT-BORDER
   Usage: <div class="hg-glow-border"> <div class="hg-glow-inner">Content</div> </div>
   Farbe folgt dem Score: --hg-glow-color (default: teal)
   ============================================================ */
.hg-glow-border {
  --hg-glow-color: var(--hg-teal);
  position: relative;
  padding: 3px;
  border-radius: 20px;
  background: conic-gradient(from var(--hg-glow-angle, 0deg),
    var(--hg-glow-color),
    transparent 40%,
    var(--hg-glow-color) 60%,
    transparent);
  animation: hg-glow-spin 3s linear infinite;
}
.hg-glow-inner {
  background: #fff;
  border-radius: 17px;
  padding: 24px;
  position: relative;
  z-index: 1;
}

@property --hg-glow-angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}
@keyframes hg-glow-spin {
  to { --hg-glow-angle: 360deg; }
}

/* Fallback for browsers without @property */
@supports not (background: conic-gradient(from 0deg, red, blue)) {
  .hg-glow-border {
    border: 3px solid var(--hg-glow-color);
    background: none;
    animation: none;
  }
}

/* Score-Farben */
.hg-glow-border.score-green  { --hg-glow-color: #4caf50; }
.hg-glow-border.score-yellow { --hg-glow-color: #ff9800; }
.hg-glow-border.score-red    { --hg-glow-color: #e53935; }

/* ============================================================
   X4 · TABULAR NUMBERS
   Usage: class="hg-nums" auf jedes Element mit Zahlen
   Verhindert Ziffern-Flackern bei Countup-Animationen
   ============================================================ */
.hg-nums {
  font-variant-numeric: tabular-nums;
}

/* ============================================================
   T1 · REVEAL-ON-SCROLL (Intersection Observer)
   Usage: class="hg-reveal"  (fade up)
          class="hg-reveal hg-reveal-left"  (slide from left)
          class="hg-reveal hg-reveal-right" (slide from right)
          class="hg-reveal hg-reveal-scale" (scale up)
   JS required: hygaia-fx.js (IntersectionObserver)
   ============================================================ */
.hg-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.hg-reveal.hg-reveal-left {
  transform: translateX(-40px);
}
.hg-reveal.hg-reveal-right {
  transform: translateX(40px);
}
.hg-reveal.hg-reveal-scale {
  transform: scale(0.9);
}
.hg-reveal.visible {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* Stagger: data-hg-delay="1" bis "4" */
.hg-reveal[data-hg-delay="1"] { transition-delay: 0.1s; }
.hg-reveal[data-hg-delay="2"] { transition-delay: 0.2s; }
.hg-reveal[data-hg-delay="3"] { transition-delay: 0.3s; }
.hg-reveal[data-hg-delay="4"] { transition-delay: 0.4s; }

/* ============================================================
   T2 · CONIC-GRADIENT GAUGE
   Usage: <div class="hg-gauge" style="--hg-gauge-pct:75; --hg-gauge-color:#4caf50;">
            <span class="hg-gauge-value hg-nums">75%</span>
          </div>
   ============================================================ */
.hg-gauge {
  --hg-gauge-pct: 0;
  --hg-gauge-color: var(--hg-teal);
  --hg-gauge-bg: #e8eef0;
  --hg-gauge-size: 140px;
  width: var(--hg-gauge-size);
  height: var(--hg-gauge-size);
  border-radius: 50%;
  background: conic-gradient(
    var(--hg-gauge-color) calc(var(--hg-gauge-pct) * 3.6deg),
    var(--hg-gauge-bg) calc(var(--hg-gauge-pct) * 3.6deg)
  );
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: background 1s ease;
}
.hg-gauge::after {
  content: '';
  position: absolute;
  inset: 12px;
  border-radius: 50%;
  background: #fff;
}
.hg-gauge-value {
  position: relative;
  z-index: 1;
  font-family: 'Raleway', sans-serif;
  font-size: 28px;
  font-weight: 700;
  color: var(--hg-navy);
}

/* Size variants */
.hg-gauge.sm { --hg-gauge-size: 90px; }
.hg-gauge.sm .hg-gauge-value { font-size: 18px; }
.hg-gauge.sm::after { inset: 8px; }
.hg-gauge.lg { --hg-gauge-size: 200px; }
.hg-gauge.lg .hg-gauge-value { font-size: 40px; }

/* ============================================================
   T3 · ANIMATED COUNTER
   Usage: <span class="hg-counter hg-nums" data-hg-target="1847">0</span>
   Optional: data-hg-duration="2000" (ms), data-hg-suffix="%"
   JS required: hygaia-fx.js
   ============================================================ */
/* (Styling via hg-nums + your own CSS — no extra styles needed) */

/* ============================================================
   T4 · MORPHING BLOB
   Usage: <div class="hg-blob"></div>
   Variants: hg-blob-teal, hg-blob-navy
   Use as background deko behind content
   ============================================================ */
.hg-blob {
  width: 300px;
  height: 300px;
  background: linear-gradient(135deg, var(--hg-teal), var(--hg-teal-light));
  border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  animation: hg-morph 8s ease-in-out infinite;
  opacity: 0.12;
  position: absolute;
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}
.hg-blob-navy {
  background: linear-gradient(135deg, var(--hg-navy), #1a2f3d);
}
.hg-blob-teal {
  background: linear-gradient(135deg, var(--hg-teal), var(--hg-teal-light));
}
.hg-blob.sm { width: 150px; height: 150px; }
.hg-blob.lg { width: 500px; height: 500px; }

@keyframes hg-morph {
  0%   { border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%; transform: rotate(0deg); }
  25%  { border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%; }
  50%  { border-radius: 50% 60% 30% 40% / 40% 70% 50% 60%; transform: rotate(180deg); }
  75%  { border-radius: 40% 30% 60% 50% / 60% 40% 60% 30%; }
  100% { border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%; transform: rotate(360deg); }
}

/* ============================================================
   T5 · 3D TILT
   Usage: class="hg-tilt" auf Cards
   JS required: hygaia-fx.js (mousemove)
   ============================================================ */
.hg-tilt {
  transition: transform 0.15s ease;
  transform-style: preserve-3d;
  will-change: transform;
}
.hg-tilt:hover {
  box-shadow: 0 12px 32px rgba(42, 71, 89, 0.12);
}

/* ============================================================
   T6 · CONFETTI
   Usage: <button data-hg-confetti>Klick!</button>
   Or trigger via JS: HyGaiaFX.confetti(element)
   JS required: hygaia-fx.js
   ============================================================ */
.hg-confetti-piece {
  position: fixed;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  pointer-events: none;
  z-index: 10001;
  animation: hg-confetti-fall 1.2s ease-out forwards;
}

@keyframes hg-confetti-fall {
  0%   { opacity: 1; transform: translateY(0) rotate(0deg) scale(1); }
  100% { opacity: 0; transform: translateY(300px) rotate(720deg) scale(0.3); }
}

/* ============================================================
   T7 · SVG LINE-DRAWING
   Usage: <svg class="hg-line-draw"> ... </svg>
   All paths/lines/circles inside get the draw animation.
   Optional: data-hg-draw-duration="2" (seconds)
   JS required: hygaia-fx.js (calculates stroke-dasharray)
   ============================================================ */
.hg-line-draw path,
.hg-line-draw line,
.hg-line-draw circle,
.hg-line-draw polyline,
.hg-line-draw polygon,
.hg-line-draw rect {
  stroke-dashoffset: var(--hg-dash-length, 1000);
  stroke-dasharray: var(--hg-dash-length, 1000);
  transition: stroke-dashoffset var(--hg-draw-dur, 2s) ease;
}
.hg-line-draw.drawn path,
.hg-line-draw.drawn line,
.hg-line-draw.drawn circle,
.hg-line-draw.drawn polyline,
.hg-line-draw.drawn polygon,
.hg-line-draw.drawn rect {
  stroke-dashoffset: 0;
}

/* ============================================================
   T8 · CSS MASK-IMAGE REVEAL
   Usage: class="hg-mask-reveal"  (gradient wipe from left)
          class="hg-mask-reveal hg-mask-radial" (radial reveal from center)
   Triggers when element gets .visible (combine with hg-reveal)
   ============================================================ */
.hg-mask-reveal {
  -webkit-mask-image: linear-gradient(90deg, #000 0%, transparent 0%);
  mask-image: linear-gradient(90deg, #000 0%, transparent 0%);
  -webkit-mask-size: 200% 100%;
  mask-size: 200% 100%;
  -webkit-mask-position: 100% 0;
  mask-position: 100% 0;
  transition: -webkit-mask-position 1s ease, mask-position 1s ease;
}
.hg-mask-reveal.visible {
  -webkit-mask-position: 0% 0;
  mask-position: 0% 0;
}

.hg-mask-reveal.hg-mask-radial {
  -webkit-mask-image: radial-gradient(circle at center, #000 0%, transparent 0%);
  mask-image: radial-gradient(circle at center, #000 0%, transparent 0%);
  -webkit-mask-size: 100% 100%;
  mask-size: 100% 100%;
  transition: -webkit-mask-image 1s ease, mask-image 1s ease;
}
.hg-mask-reveal.hg-mask-radial.visible {
  -webkit-mask-image: radial-gradient(circle at center, #000 0%, #000 100%);
  mask-image: radial-gradient(circle at center, #000 0%, #000 100%);
}

/* ============================================================
   PREFERS-REDUCED-MOTION
   Respektiert System-Einstellung: schaltet ALLE Animationen ab
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .hg-hero-gradient { animation: none; }
  .hg-scroll-hint   { animation: none; }
  .hg-glow-border   { animation: none; }
  .hg-scroll-progress { transition: none; }
  .hg-share-btn     { transition: none; }
  .hg-svg-shadow    { transition: none; }
  .hg-reveal        { opacity: 1; transform: none; transition: none; }
  .hg-blob          { animation: none; }
  .hg-tilt          { transition: none; }
  .hg-confetti-piece { animation: none; display: none; }
  .hg-line-draw path,
  .hg-line-draw line,
  .hg-line-draw circle,
  .hg-line-draw polyline { stroke-dashoffset: 0; transition: none; }
  .hg-mask-reveal   { -webkit-mask-image: none; mask-image: none; }
}
