@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root { color-scheme: dark; }
* { box-sizing: border-box; }
[data-theme="dark"] body,
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background:
    radial-gradient(1200px 800px at 15% -10%, rgba(99,102,241,.25), transparent 60%),
    radial-gradient(1200px 800px at 110% 10%, rgba(168,85,247,.22), transparent 60%),
    linear-gradient(180deg, #0b1020 0%, #0f1530 100%);
  min-height: 100vh;
  color: #e7e7ee;
}


.gradient-text { background: -webkit-linear-gradient(45deg, #333, #555); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

/* Platz für linke Icons in allen Themes erzwingen */
.input-field.pl-10 { padding-left: 2.5rem !important; }

/* Rainbow Chaos Theme */
[data-theme="rainbow"] body {
  background:
    radial-gradient(1200px 800px at 0% 0%, rgba(255,99,132,.35), transparent 60%),
    radial-gradient(1200px 800px at 100% 0%, rgba(54,162,235,.35), transparent 60%),
    radial-gradient(1200px 800px at 0% 100%, rgba(255,206,86,.35), transparent 60%),
    radial-gradient(1200px 800px at 100% 100%, rgba(75,192,192,.35), transparent 60%),
    linear-gradient(180deg, #101018 0%, #121226 100%);
}
[data-theme="rainbow"] .controls.glass,
[data-theme="rainbow"] .tabs.glass,
[data-theme="rainbow"] .select-trigger,
[data-theme="rainbow"] .control input,
[data-theme="rainbow"] .control select,
[data-theme="rainbow"] .sound {
  /* Abgerundete Rainbow-Rahmen wie Buttons */
  border-radius: 14px;
  border: 1px solid transparent;
  background:
    linear-gradient(135deg, rgba(255,255,255,.16), rgba(255,255,255,.08)) padding-box,
    linear-gradient(90deg, #ff6384, #36a2eb, #ffce56, #4bc0c0, #9966ff) border-box;
  background-clip: padding-box, border-box;
}
[data-theme="rainbow"] .sound,
[data-theme="rainbow"] .select-trigger,
[data-theme="rainbow"] .control input,
[data-theme="rainbow"] .control select { border-radius: 14px; }
[data-theme="rainbow"] .tab { border-radius: 999px; }
[data-theme="rainbow"] .tab.active { background: linear-gradient(90deg, #ff6384AA, #36a2ebAA, #ffce56AA, #4bc0c0AA, #9966ffAA); }
[data-theme="rainbow"] .tabs.glass { border: none; background: transparent; box-shadow: none; }

/* Rainbow Chaos (Stitch) */
@keyframes rainbow-bg { 0%{background-position:0% 50%} 50%{background-position:100% 50%} 100%{background-position:0% 50%} }
[data-theme="rainbow"] body { background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab); background-size: 400% 400%; animation: rainbow-bg 15s ease infinite; }
[data-theme="rainbow"] .control-panel { background-color: rgba(30,30,30,.75); border: 1px solid #3a3a3c; backdrop-filter: blur(10px); }
[data-theme="rainbow"] .tag-btn { padding: 8px 16px; border-radius: 9999px; font-size: .875rem; font-weight: 500; background: rgba(44,44,44,.8); color: #a0a0a0; border:1px solid transparent; transition: transform .3s; cursor: pointer; text-shadow: 0 1px 2px rgba(0,0,0,.5) }
[data-theme="rainbow"] .tag-btn:hover { background: rgba(58,58,58,.9); color: #fff; transform: scale(1.1); }
[data-theme="rainbow"] .tag-btn.active { background: linear-gradient(45deg,#ff00ff,#00ffff); color: #fff; font-weight:700; border:1px solid #fff; box-shadow: 0 0 15px rgba(255,0,255,.7), 0 0 15px rgba(0,255,255,.7); }
[data-theme="rainbow"] .input-field { width:100%; background: rgba(44,44,44,.8); border:1px solid #3a3a3c; border-radius:.5rem; padding:.5rem 1rem; color:#e0e0e0; outline:none; }
[data-theme="rainbow"] .input-field:focus { box-shadow: 0 0 10px #23a6d5, 0 0 5px #e73c7e; border-color:#fff; }
[data-theme="rainbow"] .sound-btn { background: rgba(30,30,30,.75); border:1px solid #3a3a3c; box-shadow: 0 1px 2px rgba(0,0,0,.2); backdrop-filter: blur(10px); transition: transform .2s ease, box-shadow .2s; }
[data-theme="rainbow"] .sound-btn:hover { transform: translateY(-2px) scale(1.05); box-shadow: 0 8px 30px rgba(0,0,0,.5); border-color:#fff; }
[data-theme="rainbow"] .gradient-text { background: -webkit-linear-gradient(45deg,#ff8a00,#e52e71,#9c27b0); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; text-shadow: 0 0 10px rgba(255,255,255,.2) }

/* 420 Theme - Cannabis/Trippy */
[data-theme="420"] body {
  background: 
    radial-gradient(1200px 800px at 20% -20%, rgba(34,197,94,.4), transparent 60%),
    radial-gradient(1200px 800px at 80% 20%, rgba(74,222,128,.3), transparent 60%),
    radial-gradient(1200px 800px at 40% 80%, rgba(22,163,74,.3), transparent 60%),
    linear-gradient(135deg, #22c55e, #16a34a, #15803d);
  background-size: 400% 400%;
  animation: cannabis-bg 20s ease infinite;
  color: #f0fdf4;
  font-family: 'Poppins', ui-sans-serif, system-ui, Segoe UI, Roboto, Helvetica, Arial;
  position: relative;
  overflow-x: hidden;
}

/* Floating Broccoli Animation */
[data-theme="420"]::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

/* Broccoli Elements */
[data-theme="420"] .broccoli {
  position: fixed;
  font-size: 2rem;
  opacity: 0.6;
  z-index: 1;
  pointer-events: none;
  animation: float-broccoli 15s linear infinite;
}

[data-theme="420"] .broccoli:nth-child(1) {
  top: 10%;
  left: 10%;
  animation-delay: 0s;
  animation-duration: 18s;
}

[data-theme="420"] .broccoli:nth-child(2) {
  top: 20%;
  right: 15%;
  animation-delay: 0s;
  animation-duration: 22s;
}

[data-theme="420"] .broccoli:nth-child(3) {
  bottom: 25%;
  left: 20%;
  animation-delay: 0s;
  animation-duration: 20s;
}

[data-theme="420"] .broccoli:nth-child(4) {
  bottom: 15%;
  right: 10%;
  animation-delay: 0s;
  animation-duration: 25s;
}

[data-theme="420"] .broccoli:nth-child(5) {
  top: 50%;
  left: 5%;
  animation-delay: 0s;
  animation-duration: 16s;
}

[data-theme="420"] .broccoli:nth-child(6) {
  top: 30%;
  right: 5%;
  animation-delay: 0s;
  animation-duration: 19s;
}

/* Broccoli Bounce Animation */
@keyframes float-broccoli {
  0% {
    transform: translate(0, 0) rotate(0deg);
  }
  25% {
    transform: translate(100px, -50px) rotate(90deg);
  }
  50% {
    transform: translate(200px, 0px) rotate(180deg);
  }
  75% {
    transform: translate(100px, 50px) rotate(270deg);
  }
  100% {
    transform: translate(0, 0) rotate(360deg);
  }
}

/* Ensure content stays above broccoli */
[data-theme="420"] .container {
  position: relative;
  z-index: 10;
}

@keyframes cannabis-bg {
  0% { background-position: 0% 50% }
  50% { background-position: 100% 50% }
  100% { background-position: 0% 50% }
}

[data-theme="420"] .control-panel { 
  background-color: rgba(17, 24, 39, 0.6); 
  border: 1px solid #4ade80;
  backdrop-filter: blur(10px);
}

[data-theme="420"] .tag-btn { 
  padding: 8px 16px; 
  border-radius: 9999px; 
  font-size: .875rem; 
  font-weight: 500; 
  background: rgba(17, 24, 39, 0.7); 
  color: #d1fae5; 
  border: 1px solid #4ade80;
  transition: all .3s ease;
  cursor: pointer;
}

[data-theme="420"] .tag-btn:hover { 
  background: rgba(34, 197, 94, 0.2); 
  color: #f0fdf4;
  transform: scale(1.05);
}

[data-theme="420"] .tag-btn.active { 
  background: #22c55e; 
  color: white; 
  font-weight: 600;
  border-color: #22c55e;
  box-shadow: 0 0 15px rgba(34, 197, 94, 0.5);
}

[data-theme="420"] .input-field { 
  width: 100%; 
  background: rgba(30, 41, 59, 0.7); 
  border: 2px solid transparent;
  border-radius: .5rem; 
  padding: .5rem 1rem; 
  color: #d1fae5;
  outline: none;
  transition: all .3s ease;
}

[data-theme="420"] .input-field:focus { 
  border-color: #4ade80;
  box-shadow: 0 0 0 3px rgba(74, 222, 128, 0.25);
}

[data-theme="420"] .sound-btn { 
  background: rgba(17, 24, 39, 0.7); 
  border: 1px solid #4ade80; 
  box-shadow: 0 1px 2px rgba(0,0,0,.2);
  backdrop-filter: blur(10px);
  transition: all .3s ease;
  color: #d1fae5;
}

[data-theme="420"] .sound-btn:hover { 
  background: #22c55e; 
  color: white;
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 25px rgba(34, 197, 94, 0.4);
}

[data-theme="420"] .gradient-text { 
  background: -webkit-linear-gradient(45deg, #22c55e, #4ade80, #16a34a); 
  -webkit-background-clip: text; 
  background-clip: text; 
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 10px rgba(34, 197, 94, 0.3);
}

/* 420 Theme Header */
[data-theme="420"] header {
  background: rgba(17, 24, 39, 0.6);
  border: 1px solid #4ade80;
  backdrop-filter: blur(15px);
  color: #f0fdf4;
}

/* 420 Theme Volume Slider */
[data-theme="420"] .volume-slider {
  --range-accent: #22c55e;
  --range-track-bg: rgba(30, 41, 59, 0.7);
  accent-color: #22c55e;
  border-radius: 5px;
  height: 8px;
  border: 1px solid #4ade80;
}

[data-theme="420"] .volume-slider::-webkit-slider-thumb {
  background: linear-gradient(45deg, #22c55e, #4ade80);
  box-shadow: 0 0 10px rgba(34, 197, 94, 0.5);
}

[data-theme="420"] .volume-slider::-moz-range-thumb {
  background: linear-gradient(45deg, #22c55e, #4ade80);
  box-shadow: 0 0 10px rgba(34, 197, 94, 0.5);
}

/* 420 Theme Checkbox */
[data-theme="420"] input[type="checkbox"] {
  accent-color: #22c55e;
  width: 16px;
  height: 16px;
  border-radius: 3px;
  border: 2px solid #4ade80;
  background: rgba(17, 24, 39, 0.7);
  cursor: pointer;
}

[data-theme="420"] input[type="checkbox"]:checked {
  background: #22c55e;
  border-color: #22c55e;
  box-shadow: 0 0 10px rgba(34, 197, 94, 0.3);
}

/* Dark (Stitch) */
[data-theme="dark"] .control-panel { background-color:#1e1e1e; border:1px solid #3a3a3c }
[data-theme="dark"] .tag-btn { padding:8px 16px; border-radius:9999px; font-size:.875rem; font-weight:500; background:#2c2c2c; color:#a0a0a0; border:1px solid transparent; }
[data-theme="dark"] .tag-btn:hover { background:#3a3a3a; color:#e0e0e0 }
[data-theme="dark"] .tag-btn.active { background:#0a84ff; color:#fff; font-weight:600 }
[data-theme="dark"] .input-field { width:100%; background:#2c2c2c; border:1px solid #3a3a3c; border-radius:.5rem; padding:.5rem 1rem; color:#e0e0e0 }
[data-theme="dark"] .sound-btn { background:#1e1e1e; border:1px solid #3a3a3c; box-shadow:0 1px 2px rgba(0,0,0,.2) }
[data-theme="dark"] .sound-btn:hover { transform: translateY(-1px); box-shadow:0 4px 12px rgba(0,0,0,.4); border-color:#0a84ff }
[data-theme="dark"] .gradient-text { background: -webkit-linear-gradient(45deg,#e0e0e0,#a0a0a0); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent }

.container { width: 90vw; max-width: 1800px; margin: 0 auto; padding: 28px; }

/* Neuer Header-Style basierend auf Google Stitch Design */
header { 
  display: flex; 
  align-items: center; 
  justify-content: space-between; 
  padding: 24px; 
  margin-bottom: 18px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}



/* Rainbow Theme Header */
[data-theme="rainbow"] header {
  background: rgba(30, 30, 30, 0.4);
  border: 1px solid transparent;
  backdrop-filter: blur(20px);
  background: 
    linear-gradient(135deg, rgba(255,255,255,.1), rgba(255,255,255,.05)) padding-box,
    linear-gradient(90deg, #ff6384, #36a2eb, #ffce56, #4bc0c0, #9966ff) border-box;
  background-clip: padding-box, border-box;
  color: #ffffff;
}
/* Rainbow Header: Sekundärtexte sichtbar machen */
[data-theme="rainbow"] header .text-gray-400 { color: #ffffff !important; opacity: 1 !important; }
/* Header-Titel und Uhrzeit */
header h1 { 
  margin: 0; 
  font-weight: 800; 
  letter-spacing: .3px; 
  color: inherit;
}

header p { 
  margin: 0;
  opacity: .9; 
  color: inherit;
}
.clock {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: 1px;
  line-height: 1;
}
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px; /* wie .tab */
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.25);
  background: linear-gradient(180deg, rgba(255,255,255,.14), rgba(255,255,255,.06));
  color: #e7e7ee;
  font-size: .875rem; /* 14px */
  font-weight: 600;
  line-height: 1;
}

.controls { display: grid; grid-template-columns: 1fr minmax(240px, 320px) 260px 200px; gap: 12px; align-items: center; margin-bottom: 12px; }
.controls.row1 { z-index: 5000; }
.controls.row2 { grid-template-columns: minmax(400px, 1fr); z-index: 3000; }
.controls.row3 { grid-template-columns: auto auto; justify-content: flex-start; z-index: 2000; gap: 8px; }
.controls.glass { padding: 18px; position: relative; z-index: inherit; overflow: visible; }
.controls.glass {
  backdrop-filter: saturate(140%) blur(20px);
  background: linear-gradient(135deg, rgba(255,255,255,.14), rgba(255,255,255,.06));
  border: 1px solid rgba(255,255,255,.28);
  border-right-color: rgba(255,255,255,.18);
  border-bottom-color: rgba(255,255,255,.18);
  padding: 14px;
  border-radius: 18px;
  box-shadow: 0 20px 40px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.25);
}
.control input, .control select {
  width: 100%;
  padding: 12px 14px; /* Standard ohne Icon */
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.25);
  background: linear-gradient(180deg, rgba(255,255,255,.14), rgba(255,255,255,.06));
  color: #fff;
  backdrop-filter: blur(18px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.2);
}
.control select option { background-color: #0f1530; color: #e7e7ee; }
.control select optgroup { background-color: #0f1530; color: #c8c8d8; }

/* Custom Select */
.custom-select { position: relative; z-index: 10000; }
.select-trigger {
  width: 100%;
  text-align: left;
  padding: 12px 14px; /* Standard ohne Icon */
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.32);
  background: linear-gradient(180deg, rgba(255,255,255,.22), rgba(255,255,255,.12));
  color: #e7e7ee;
  backdrop-filter: blur(18px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.2);
}
.select-trigger .chev { float: right; opacity: .8; }
.select-menu {
  position: absolute; inset: auto 0  auto 0; top: calc(100% + 6px);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.28);
  background: #0f1530;
  box-shadow: 0 24px 48px rgba(0,0,0,.5);
  max-height: 280px; overflow-y: auto;
  z-index: 20000;
}
.select-item {
  width: 100%; text-align: left; padding: 10px 12px; color: #e7e7ee;
  background: transparent; border: 0;
}
.select-item:hover { background: rgba(255,255,255,.08); color: #fff; }
.select-item.active { background: rgba(255,255,255,.14); color: #fff; }

/* Theme Select */
.control.theme select {
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.32);
  background: linear-gradient(180deg, rgba(255,255,255,.22), rgba(255,255,255,.12));
  color: #e7e7ee;
  backdrop-filter: blur(18px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.2);
}

/* Konkrete Felder mit Icons: zusätzliche linke Padding über Klasse steuern */
.with-left-icon { padding-left: 40px !important; }
.control.theme select option { background: #0f1530; color: #e7e7ee; }
.control input::placeholder { color: #c8c8d8; }

.control.volume { display: grid; grid-template-columns: auto 1fr; gap: 10px; align-items: center; }
.control.volume label { font-weight: 700; opacity: .9; }

/* Volume Slider - Base Styles */
.control.volume input[type="range"],
.volume-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 5px;
  outline: none;
  cursor: pointer;
  /* Sichtbarer Füllbalken über ein Hintergrund-Gradient, Breite via --_fill gesteuert */
  background: linear-gradient(var(--range-accent), var(--range-accent)) 0/var(--_fill, 0%) 100% no-repeat, var(--range-track-bg, #2c2c2c);
}

/* Tracks transparent halten, damit der Hintergrund-Gradient sichtbar ist */
.control.volume input[type="range"]::-webkit-slider-runnable-track,
.volume-slider::-webkit-slider-runnable-track { height: 8px; background: transparent; border-radius: 5px; }
.control.volume input[type="range"]::-moz-range-track,
.volume-slider::-moz-range-track { height: 8px; background: transparent; border-radius: 5px; }
.control.volume input[type="range"]::-moz-range-progress,
.volume-slider::-moz-range-progress { background: transparent; }

.control.volume input[type="range"]::-webkit-slider-thumb,
.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

.control.volume input[type="range"]::-moz-range-thumb,
.volume-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

/* Volume Slider - Dark Theme */
[data-theme="dark"] .control.volume input[type="range"],
[data-theme="dark"] .volume-slider {
  --range-accent: #0a84ff;
  --range-track-bg: #2c2c2c;
  accent-color: #0a84ff;
  border-radius: 5px;
  height: 8px;
}

[data-theme="dark"] .control.volume input[type="range"]::-webkit-slider-thumb,
[data-theme="dark"] .volume-slider::-webkit-slider-thumb {
  background: #0a84ff;
}

[data-theme="dark"] .control.volume input[type="range"]::-moz-range-thumb,
[data-theme="dark"] .volume-slider::-moz-range-thumb {
  background: #0a84ff;
}



/* Volume Slider - Rainbow Theme */
[data-theme="rainbow"] .control.volume input[type="range"],
[data-theme="rainbow"] .volume-slider {
  --range-accent: #23a6d5;
  --range-track-bg: rgba(44,44,44,.8);
  accent-color: #23a6d5;
  border-radius: 5px;
  height: 8px;
  border: 1px solid #3a3a3c;
}

[data-theme="rainbow"] .control.volume input[type="range"]::-webkit-slider-thumb,
[data-theme="rainbow"] .volume-slider::-webkit-slider-thumb {
  background: linear-gradient(45deg, #23a6d5, #e73c7e);
}

[data-theme="rainbow"] .control.volume input[type="range"]::-moz-range-thumb,
[data-theme="rainbow"] .volume-slider::-moz-range-thumb {
  background: linear-gradient(45deg, #23a6d5, #e73c7e);
}

.error { background: rgba(255, 99, 99, .12); color: #ffd1d1; border: 1px solid rgba(255, 99, 99, .3); padding: 10px 12px; border-radius: 10px; margin-bottom: 12px; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }

/* Lineares, responsives Flow-Layout für Sounds */
.sounds-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.sounds-flow .sound-wrap {
  flex: 0 1 220px; /* Basisbreite wie zuvor im Grid */
}
.sound-wrap { position: relative; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 8px; }
.sound-wrap.row .sound { width: 100%; }
.row-check { width: 18px; height: 18px; accent-color: #60a5fa; }
.select-check {
  position: absolute;
  left: 8px;
  top: 8px;
  z-index: 5;
  width: 18px;
  height: 18px;
  accent-color: #60a5fa;
}
.sound {
  padding: 18px 16px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.08);
  color: #fff;
  cursor: pointer;
  font-weight: 700;
  letter-spacing: .2px;
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
}

.sound:hover { filter: brightness(1.06); background: rgba(255,255,255,.1); }
.sound:disabled { opacity: 0.6; cursor: not-allowed; }

.fav {
  position: absolute;
  top: 8px;
  right: 10px;
  background: rgba(0,0,0,.25);
  color: #fff;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 999px;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  cursor: pointer;
}
.fav.active { background: #eab308; color: #111; border-color: transparent; }

.hint { opacity: .7; padding: 24px 0; }

/* footer-info entfernt */

.tabs { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.tab {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.25);
  background: linear-gradient(180deg, rgba(255,255,255,.14), rgba(255,255,255,.06));
  color: #e7e7ee;
}
.tab:hover { background: rgba(255,255,255,.12); }
.tab.active { background: linear-gradient(135deg, rgba(168,85,247,.55), rgba(59,130,246,.55)); color: #fff; border-color: transparent; }


/* Back to top */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.25);
  background: linear-gradient(180deg, rgba(255,255,255,.14), rgba(255,255,255,.06));
  color: #e7e7ee;
  box-shadow: 0 10px 30px rgba(0,0,0,.35);
  z-index: 40000;
}
.back-to-top:hover { filter: brightness(1.1); }