style.css

/* ===========================================================
   Cosmic Garden — stylesheet
   Pure CSS, no external libraries.
=========================================================== */

:root{
  --bg:        #0b0420;
  --bg2:       #1a0838;
  --fg:        #f4ecff;
  --muted:     rgba(244,236,255,.55);
  --accent:    #c4a3ff;
  --accent2:   #ff8bd8;
  --card:      rgba(20, 8, 48, .55);
  --border:    rgba(196,163,255,.25);
  --shadow:    0 10px 40px rgba(0,0,0,.45);
}
[data-theme="ember"]{
  --bg:#1a0606; --bg2:#3a0d05; --fg:#fff3e6; --muted:rgba(255,243,230,.55);
  --accent:#ff9a4d; --accent2:#ff3d6b; --card:rgba(40,10,8,.55);
  --border:rgba(255,154,77,.25);
}
[data-theme="reef"]{
  --bg:#02161c; --bg2:#063038; --fg:#dffcff; --muted:rgba(223,252,255,.55);
  --accent:#5ef2d6; --accent2:#3db5ff; --card:rgba(4,30,38,.55);
  --border:rgba(94,242,214,.25);
}
[data-theme="mono"]{
  --bg:#000; --bg2:#0a0a0a; --fg:#fff; --muted:rgba(255,255,255,.5);
  --accent:#fff; --accent2:#999; --card:rgba(20,20,20,.6);
  --border:rgba(255,255,255,.18);
}

*{box-sizing:border-box; margin:0; padding:0;}
html,body{height:100%; overflow:hidden; background:var(--bg); color:var(--fg);}
body{
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, "Helvetica Neue", Arial, sans-serif;
  position:relative;
  user-select:none;
  -webkit-tap-highlight-color:transparent;
}

/* Stage */
#stage{
  position:fixed; inset:0; width:100%; height:100%; display:block;
  background: radial-gradient(ellipse at 50% 40%, var(--bg2) 0%, var(--bg) 70%);
  touch-action:none;
  cursor: crosshair;
}

/* ===== Top bar ===== */
.topbar{
  position:fixed; top:0; left:0; right:0; z-index:5;
  display:flex; align-items:center; gap:18px; flex-wrap:wrap;
  padding:14px 18px;
  background: linear-gradient(180deg, rgba(0,0,0,.55), rgba(0,0,0,0));
  pointer-events:none;
}
.topbar > *{pointer-events:auto;}
.brand{display:flex; align-items:center; gap:12px;}
.logo{
  font-size:30px; filter: drop-shadow(0 0 10px var(--accent));
  animation: spin 18s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}
.brand-text h1{
  font-size:18px; letter-spacing:.28em; font-weight:800;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.brand-text p{font-size:11px; color:var(--muted); letter-spacing:.08em;}
.muted{opacity:.7;}

.scenes{display:flex; gap:6px; flex-wrap:wrap; margin-left:auto;}
.scenes button{
  background: var(--card);
  border:1px solid var(--border);
  color: var(--fg);
  font-size:12px; font-weight:600; letter-spacing:.06em;
  padding:8px 14px; border-radius:999px;
  backdrop-filter: blur(10px);
  cursor:pointer;
  transition: all .18s ease;
}
.scenes button:hover{transform: translateY(-1px); border-color:var(--accent);}
.scenes button.active{
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  color:#100018; border-color:transparent;
  box-shadow: 0 6px 18px rgba(0,0,0,.4);
}

.meter{
  font-size:11px; color:var(--muted); font-variant-numeric:tabular-nums;
  padding:6px 10px; background:var(--card); border:1px solid var(--border);
  border-radius:8px; backdrop-filter:blur(10px);
}

/* ===== Hint ===== */
.hint{
  position:fixed; top:80px; left:50%; transform:translateX(-50%);
  z-index:4; pointer-events:none;
  font-size:12px; color:var(--muted); letter-spacing:.12em;
  padding:6px 16px; border-radius:999px;
  background:var(--card); border:1px solid var(--border);
  backdrop-filter:blur(8px);
  animation: floaty 6s ease-in-out infinite;
}
@keyframes floaty{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,4px)}}

/* ===== Bottom HUD ===== */
.hud{
  position:fixed; left:0; right:0; bottom:0; z-index:5;
  display:flex; gap:18px; justify-content:space-between; align-items:flex-end;
  flex-wrap:wrap; padding:18px;
  background: linear-gradient(0deg, rgba(0,0,0,.6), rgba(0,0,0,0));
  backdrop-filter: blur(2px);
  pointer-events:none;
}
.hud > *{pointer-events:auto;}
.group{display:flex; gap:14px; flex-wrap:wrap; align-items:flex-end;}
.group.right{margin-left:auto;}
.hud label{
  display:flex; flex-direction:column; gap:6px;
  font-size:10px; letter-spacing:.14em; text-transform:uppercase; color:var(--muted);
}
.hud select, .hud input[type=range]{
  background:var(--card); border:1px solid var(--border); color:var(--fg);
  border-radius:8px; padding:6px 10px; font-size:13px;
  backdrop-filter:blur(10px);
}
.hud input[type=range]{padding:0; height:32px; width:140px;}
.hud input[type=checkbox]{transform:scale(1.4); accent-color:var(--accent); margin-top:4px;}

.hud button{
  background:var(--card); border:1px solid var(--border); color:var(--fg);
  font-size:13px; font-weight:600; padding:9px 14px; border-radius:10px;
  cursor:pointer; letter-spacing:.04em;
  backdrop-filter:blur(10px);
  transition: all .18s ease;
}
.hud button:hover{transform:translateY(-1px); border-color:var(--accent); box-shadow:0 6px 18px rgba(0,0,0,.35);}

/* ===== Audio badge ===== */
.audio-badge{
  position:fixed; bottom:96px; left:50%; transform:translateX(-50%);
  padding:6px 14px; font-size:11px; color:var(--muted);
  background:var(--card); border:1px solid var(--border); border-radius:999px;
  backdrop-filter:blur(10px); z-index:6; transition:opacity .8s;
}
.audio-badge.hide{opacity:0; pointer-events:none;}

/* ===== Modal ===== */
.modal{
  position:fixed; inset:0; z-index:20;
  display:flex; align-items:center; justify-content:center;
  background: rgba(0,0,0,.55); backdrop-filter:blur(6px);
}
.modal.hidden{display:none;}
.modal-card{
  background: var(--bg2); border:1px solid var(--border); border-radius:14px;
  padding:22px 26px; max-width:520px; width:90%;
  box-shadow: var(--shadow);
  animation: pop .18s ease;
}
@keyframes pop{from{transform:scale(.96); opacity:0}to{transform:scale(1); opacity:1}}
.modal-card h2{font-size:14px; letter-spacing:.2em; margin-bottom:14px; color:var(--accent);}
.modal-card table{width:100%; border-collapse:collapse; font-size:13px;}
.modal-card td{padding:6px 8px; border-bottom:1px solid rgba(255,255,255,.06);}
.modal-card td:first-child{width:120px;}
.modal-card td:last-child{color:var(--muted);}
.modal-card p.muted{font-size:11px; margin-top:12px; line-height:1.5;}
.modal-card code{
  background:rgba(255,255,255,.1); padding:2px 6px; border-radius:4px; font-size:11px;
}
kbd{
  display:inline-block; padding:2px 7px; font-family:ui-monospace,monospace; font-size:12px;
  background:rgba(255,255,255,.1); border:1px solid rgba(255,255,255,.18); border-radius:5px;
  box-shadow:0 1px 0 rgba(255,255,255,.1) inset;
}
.modal-card button{
  margin-top:16px; background:linear-gradient(90deg,var(--accent),var(--accent2));
  color:#100018; border:none; padding:9px 18px; border-radius:8px; font-weight:700;
  cursor:pointer; letter-spacing:.04em; font-size:13px;
}

@media (max-width: 720px){
  .brand-text{display:none;}
  .scenes{margin-left:0;}
  .meter{display:none;}
}