:root{
    --bg:#0B1220;
    --text:#E6F4F1;
    --muted:#9BBCC6;
    --seafoam:#00C2A8;

    --font-size: 20px;
    --fade-duration: 2.5s;

    --radius:18px;
}

*{ box-sizing:border-box; margin:0; padding:0; }
html, body{ height:100%; }

body{
    overflow:hidden;
    color:var(--text);
    font-family: ui-sans-serif, system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
    -moz-osx-font-smoothing:grayscale;
}

/* ===== polyray-like background layer ===== */
.bg{
    position:fixed;
    inset:0;
    z-index:0;
    overflow:hidden;
    background:
        radial-gradient(1200px 800px at 70% 20%, rgba(0,194,168,.12), transparent 60%),
        radial-gradient(900px 700px at 20% 80%, rgba(0,168,107,.10), transparent 55%),
        linear-gradient(180deg, #0B1220 0%, #0B1626 40%, #0C1A2B 100%);
}
.bg::after{
    content:"";
    position:absolute;
    inset:-20%;
    background:radial-gradient(closest-side, rgba(255,255,255,.05), rgba(255,255,255,0) 70%);
    filter:blur(80px);
    animation: drift 22s ease-in-out infinite alternate;
}
@keyframes drift{
    0%{transform:translate3d(-1%, -2%, 0) scale(1)}
    100%{transform:translate3d(1%, 2%, 0) scale(1.03)}
}

/* ===== transparent stars canvas ===== */
canvas#sky{
    position:fixed;
    inset:0;
    width:100%;
    height:100%;
    display:block;
    background:transparent;
    z-index:1;
}

/* ===== vignette ===== */
.grain{
    position:fixed;
    inset:0;
    pointer-events:none;
    mix-blend-mode:soft-light;
    opacity:.18;
    background-image: radial-gradient(ellipse at center,
        rgba(0,0,0,.08) 0%,
        rgba(0,0,0,.35) 70%,
        rgba(0,0,0,.62) 100%);
    z-index:2;
}

/* ===== manta logo TOP-LEFT (only manta-circle.png) ===== */
/* Move the logo (circle + manta together) by changing these: */
.polyray-logo{
    position:fixed;
    top:12px;      /* move down by increasing */
    left:12px;     /* move right by increasing */
    z-index:120;

    width:52px;
    height:52px;

    border-radius:50%;
    display:grid;
    place-items:center;
    text-decoration:none;

    background:
        radial-gradient(60% 60% at 50% 35%, rgba(0,194,168,0.12), rgba(0,0,0,0)),
        linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
    border:1px solid rgba(255,255,255,0.10);
    box-shadow:
        inset 0 0 0 2px rgba(0,194,168,0.05),
        0 0 0 3px rgba(0,194,168,0.03);
    backdrop-filter: blur(10px) saturate(120%);
}

.polyray-logo-inner{ position:relative; width:100%; height:100%; }

/* Move ONLY the manta inside the circle by changing translate() */
.polyray-circle{
    position:absolute;
    left:50%;
    top:50%;
    width:150%;
    height:auto;

    /* centered manta */
    transform: translate(-50%, -50%);

    opacity:0.96;

    /* force white */
    filter:
        brightness(0) invert(1)
        drop-shadow(0 2px 7px rgba(0,0,0,.45));
}

/* ===== skip tutorial button ===== */
.skip-tutorial{
    position:fixed;
    top:20px;
    right:20px;
    z-index:121;
    background: rgba(15,35,60,.7);
    border: 1px solid rgba(155,188,198,.35);
    color: var(--text);
    padding: 8px 16px;
    border-radius: 20px;
    cursor:pointer;
    font-size:14px;
    opacity:.75;
    transition: opacity .3s ease;
}
.skip-tutorial:hover{ opacity:1; }

/* ===== tutorial overlay ===== */
.tutorial-overlay{
    position:fixed;
    inset:0;
    background: rgba(11,18,32,0.95);
    display:flex;
    justify-content:center;
    align-items:center;
    z-index:100;
    opacity:1;
    transition: opacity 4s ease;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.08);
}
.tutorial-overlay.hidden{
    opacity:0;
    pointer-events:none;
}

.tutorial-content{
    text-align:center;
    max-width:600px;
    padding:40px;
    font-size:24px;
    line-height:1.6;
    color:var(--text);
    transition: opacity 4s ease;
    opacity:1;
}
.tutorial-content.fading{ opacity:0; }

.tutorial-instruction{
    margin-top:30px;
    font-size:18px;
    color:var(--muted);
    font-style:italic;
}

.tutorial-word-break{
    display:inline-block;
    position:relative;
}

/* ===== main input glass ===== */
.top{
    position:fixed;
    top:10vh;
    left:50%;
    transform:translateX(-50%);
    width:min(800px, 86vw);
    z-index:30;
    opacity:0;
    transition:opacity 4s ease;

    backdrop-filter: blur(12px) saturate(120%);
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius);
    padding: 20px;
}
.top.visible{ opacity:1; }

.thought-row{ position:relative; }

input#thought{
    width:100%;
    height:44px;
    background:transparent;
    color:var(--text);
    border:2px solid rgba(155,188,198,.45);
    border-radius:10px;
    padding:0 14px 0 46px;
    outline:none;
    font-size:var(--font-size);
    line-height:44px;
}
input#thought:focus{
    border-color:var(--seafoam);
    box-shadow:0 0 20px rgba(0,194,168,0.25);
}
.thought-row::before{
    content:"🌙";
    position:absolute;
    left:12px;
    top:50%;
    transform:translateY(-52%);
    opacity:.75;
    font-size:20px;
}

/* ===== audio controls ===== */
.audio-controls{
  position:fixed;
  right:12px;
  bottom:12px;
  z-index:40;
  opacity:.80;
}

.audio-controls button{
  appearance:none;
  border: 1px solid rgba(155,188,198,.35);
  background: rgba(15,35,60,.55);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 10px;
  font-weight: 600;
  cursor:pointer;
  font-size:14px;
}

.audio-panel{
  position:absolute;
  right:0;
  bottom:46px;
  width:190px;
  padding:10px 10px 8px;
  border-radius:12px;
  border: 1px solid rgba(155,188,198,.25);
  background: rgba(15,35,60,.70);
  backdrop-filter: blur(10px) saturate(120%);
}

.audio-mute{
  width:100%;
  margin-bottom:8px;
  text-align:left;
  padding:8px 10px;
  border-radius:10px;
}

.vol-row{
  display:grid;
  grid-template-columns: 54px 1fr;
  align-items:center;
  gap:10px;
  margin:8px 0;
  font-size:12px;
  color: rgba(230,244,241,.85);
}

.audio-panel input[type="range"]{
  appearance:none;
  width:100%;
  height:4px;
  border-radius:999px;
  background: rgba(155,188,198,.25);
  outline:none;
}

.audio-panel input[type="range"]::-webkit-slider-thumb{
  appearance:none;
  width:10px;
  height:10px;
  border-radius:50%;
  background: rgba(230,244,241,.85);
  border: 1px solid rgba(0,0,0,.25);
}
.audio-panel input[type="range"]::-moz-range-thumb{
  width:10px;
  height:10px;
  border-radius:50%;
  background: rgba(230,244,241,.85);
  border: 1px solid rgba(0,0,0,.25);
}

.audio-controls button .icon-sliders{
  display:block;
}

#toggleVolume.is-muted { opacity: 0.55; }

/* ===== privacy link ===== */
.privacy-link{
    position:fixed;
    left:12px;
    bottom:12px;
    z-index:40;
    opacity:.55;
    font-size:12px;
    color:var(--muted);
    text-decoration:none;
    transition: opacity .3s ease;
}
.privacy-link:hover{ opacity:.85; }

/* ===== falling words (no blur) ===== */
.fall-word{
    position:fixed;
    left:0;
    top:0;
    z-index:20;
    pointer-events:none;

    font-size:var(--font-size);
    color:var(--text);

    text-shadow:none;
    filter:none;

    opacity:1;
    white-space:nowrap;
    transform-origin:0 0;
    backface-visibility:hidden;
    transition: opacity var(--fade-duration) ease-out;
}
.fall-word.fading{ opacity:0; }

.flash{
    position:absolute;
    left:50%;
    top:50%;
    transform:translate(-50%,-50%);
    width:6px;
    height:6px;
    border-radius:50%;
    opacity:0;
    pointer-events:none;
    background: radial-gradient(circle,
        rgba(255,255,255,.9),
        rgba(0,194,168,.25) 60%,
        transparent 70%);
}
.fall-word.break .flash{ opacity:1; transition: opacity .5s ease; }

@keyframes bumpDraw{
    to { stroke-dashoffset: 0; }
}
@keyframes bumpFade{
    0%   { opacity:0; transform: translate(-50%, -50%) translateY(-2px) scaleX(0.85); }
    15%  { opacity:0.75; }
    55%  { opacity:0.35; transform: translate(-50%, -50%) translateY(8px) scaleX(1.00); }
    100% { opacity:0; transform: translate(-50%, -50%) translateY(14px) scaleX(1.05); }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
    .bg::after{ animation:none !important; }
    .fall-word{ transition:none !important; }
}