*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
:root{--accent:#6c5ce7;--accent-glow:rgba(108,92,231,.4);--glass:rgba(255,255,255,.05);--glass-border:rgba(255,255,255,.09);--glass-border-strong:rgba(255,255,255,.14);--text:#f0f0f0;--text-dim:rgba(255,255,255,.55);--text-faint:rgba(255,255,255,.35);--safe-top:0px;--safe-bottom:0px}
html,body{width:100%;height:100%;overflow:hidden;background:#020208;color:var(--text);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;touch-action:manipulation;user-select:none;-webkit-user-select:none}
canvas#bg{position:fixed;top:0;left:0;width:100%;height:100%;z-index:0}
#app{position:fixed;top:0;left:0;width:100%;height:100%;z-index:1;display:flex;flex-direction:column;opacity:0;animation:fadeUp .8s .2s forwards;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;scrollbar-width:none}
#app::-webkit-scrollbar{display:none}
@keyframes fadeUp{to{opacity:1}}

/* Sticky header */
.header{position:sticky;top:0;display:flex;align-items:center;justify-content:space-between;padding:calc(6px + var(--safe-top)) 16px 8px;z-index:10;flex-shrink:0;gap:10px;background:linear-gradient(180deg,rgba(2,2,8,.9) 0%,rgba(2,2,8,.6) 60%,transparent 100%);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}
.header-btns{display:flex;gap:8px;flex-shrink:0}
.hdr-btn{width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.06);border:1px solid var(--glass-border);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .25s ease;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);font-size:16px;color:var(--text)}
.hdr-btn:active{transform:scale(.9)}
.hdr-btn svg{width:18px;height:18px;display:block;opacity:.78;transition:opacity .25s,filter .25s,transform .35s ease}

/* Theme switcher */
.theme-bar{display:flex;gap:8px;align-items:center;flex-shrink:1;min-width:0;overflow-x:auto;scrollbar-width:none}
.theme-bar::-webkit-scrollbar{display:none}
.theme-swatch{width:32px;height:32px;border-radius:11px;cursor:pointer;transition:all .25s;border:2px solid transparent;position:relative;overflow:hidden;flex-shrink:0}
.theme-swatch:active{transform:scale(.9)}
.theme-swatch.active{border-color:var(--accent);box-shadow:0 0 14px var(--accent-glow)}
.theme-swatch-inner{position:absolute;inset:2px;border-radius:8px}

/* Scrollable main column */
.main-scroll{display:flex;flex-direction:column;gap:4px;padding:2px 16px calc(36px + var(--safe-bottom));max-width:560px;width:100%;margin:0 auto}

/* Glass section card */
.section{background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));border:1px solid var(--glass-border);border-radius:22px;padding:18px;backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);box-shadow:0 12px 36px rgba(0,0,0,.25),inset 0 1px 0 rgba(255,255,255,.05)}
.section-label{display:flex;align-items:center;gap:10px;font-size:10px;color:var(--text-faint);letter-spacing:3px;text-transform:uppercase;margin-bottom:14px;font-weight:700}
.section-label::after{content:'';flex:1;height:1px;background:linear-gradient(90deg,var(--glass-border-strong),transparent)}

/* Mode toggle — premium sliding indicator (bare, no card) */
.mode-toggle{display:flex;position:relative;background:linear-gradient(180deg,rgba(0,0,0,.42),rgba(0,0,0,.22));border-radius:20px;padding:6px;border:1px solid var(--glass-border);box-shadow:inset 0 2px 10px rgba(0,0,0,.5),0 1px 0 rgba(255,255,255,.05);margin:0 2px}
.mode-toggle-indicator{position:absolute;top:6px;left:6px;width:calc(50% - 6px);height:calc(100% - 12px);border-radius:15px;background:linear-gradient(135deg,var(--accent) 0%,rgba(255,255,255,.18) 160%);box-shadow:0 10px 28px var(--accent-glow),0 2px 8px rgba(0,0,0,.35),inset 0 1px 0 rgba(255,255,255,.45),inset 0 -2px 6px rgba(0,0,0,.2);transition:transform .5s cubic-bezier(.34,1.2,.5,1),background .3s;z-index:0;pointer-events:none}
.mode-toggle[data-active="isochronic"] .mode-toggle-indicator{transform:translateX(100%)}
.mode-btn{flex:1;position:relative;z-index:1;padding:15px 8px;display:flex;align-items:center;justify-content:center;gap:10px;border-radius:15px;font-size:11px;font-weight:700;color:var(--text-dim);cursor:pointer;background:none;border:none;letter-spacing:2.4px;text-transform:uppercase;font-family:inherit;transition:color .35s,transform .15s}
.mode-btn:active{transform:scale(.97)}
.mode-btn.active{color:#fff;text-shadow:0 1px 10px rgba(0,0,0,.45)}
.mode-btn svg{width:18px;height:18px;flex-shrink:0;opacity:.5;transition:opacity .35s,filter .35s,transform .35s}
.mode-btn.active svg{opacity:1;filter:drop-shadow(0 0 8px rgba(255,255,255,.6));transform:scale(1.05)}

/* Play section (3-col: freq info | orb | tone col) */
.play-section{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;padding:0 2px;position:relative;margin-top:-6px}
.play-section::before{content:'';position:absolute;inset:0 8%;background:radial-gradient(ellipse at 50% 50%,var(--accent-glow) 0%,transparent 65%);opacity:.35;pointer-events:none;z-index:-1;filter:blur(12px)}
.play-info-left{text-align:right;display:flex;flex-direction:column;align-items:flex-end;justify-content:center;gap:5px;min-width:0}
.freq-hz{font-size:38px;font-weight:200;letter-spacing:1px;line-height:.95;background:linear-gradient(180deg,#fff 0%,rgba(255,255,255,.55) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;white-space:nowrap}
.freq-band{font-size:10px;color:var(--accent);letter-spacing:3.5px;text-transform:uppercase;font-weight:700;text-shadow:0 0 14px var(--accent-glow);white-space:nowrap}
.carrier-info{font-size:9px;color:var(--text-faint);letter-spacing:1.8px;text-transform:uppercase;font-weight:600;margin-top:2px;white-space:nowrap}

/* Tone color vertical column */
.tone-color-col{display:flex;flex-direction:column;gap:4px;min-width:0;justify-self:start;align-self:start;width:100%;max-width:110px;padding-top:2px}
.tone-col-label{font-size:8px;color:var(--text-faint);letter-spacing:2.2px;text-transform:uppercase;font-weight:700;padding-left:2px;margin-bottom:0;display:flex;align-items:center;gap:6px}
.tone-col-label::after{content:'';flex:1;height:1px;background:linear-gradient(90deg,var(--glass-border-strong),transparent)}
.tone-btn{padding:5px 8px;border-radius:10px;background:rgba(255,255,255,.04);border:1px solid var(--glass-border);font-size:9px;color:var(--text-dim);cursor:pointer;transition:all .25s;font-family:inherit;font-weight:700;letter-spacing:1.2px;text-transform:uppercase;text-align:center;white-space:nowrap}
.tone-btn:active{transform:scale(.95)}
.tone-btn.active{border-color:var(--accent);color:var(--text);background:rgba(108,92,231,.2);box-shadow:0 0 16px var(--accent-glow),inset 0 1px 0 rgba(255,255,255,.12)}

/* Play button */
.play-wrap{position:relative;width:140px;height:140px;justify-self:center}

/* Fine tune — same width as volume */
.fine-tune-standalone{width:66%;max-width:360px;margin:0 auto;background:none;border:none;border-radius:0;padding:0 4px;backdrop-filter:none;-webkit-backdrop-filter:none;box-shadow:none}

/* Standalone volume (no card) */
.volume-standalone{width:66%;max-width:360px;margin:0 auto;padding:0 4px}
.volume-standalone .ctrl-group{margin-bottom:0}
.volume-standalone .ctrl-label{justify-content:center;gap:10px;margin-bottom:8px}

/* Bare presets group (no card) */
.presets-bare{padding:0 2px}
.presets-bare .section-label{margin-bottom:10px;padding:0 2px}

/* Compact layout on narrow screens */
@media (max-width:400px){
  .play-section{gap:8px;padding:20px 0 12px}
  .play-wrap{width:120px;height:120px}
  .freq-hz{font-size:30px}
  .freq-band{font-size:9px;letter-spacing:2.6px}
  .carrier-info{font-size:8px;letter-spacing:1.4px}
  .tone-color-col{gap:5px;max-width:92px}
  .tone-btn{padding:6px 6px;font-size:8px;letter-spacing:.8px}
  .tone-col-label{font-size:7px}
  .mode-btn{letter-spacing:1.6px;font-size:10px;gap:6px;padding:14px 4px}
  .mode-btn svg{width:16px;height:16px}
}
.play-ring{position:absolute;inset:-10px;border-radius:50%;border:2px solid var(--accent-glow);animation:ringPulse 3s ease-in-out infinite}
.play-ring2{position:absolute;inset:-24px;border-radius:50%;border:1px solid rgba(108,92,231,.15);animation:ringPulse 3s .5s ease-in-out infinite}
@keyframes ringPulse{0%,100%{transform:scale(1);opacity:.6}50%{transform:scale(1.08);opacity:1}}
.play-btn{width:100%;height:100%;border-radius:50%;background:radial-gradient(circle at 40% 35%,rgba(108,92,231,.32),rgba(108,92,231,.12) 60%,transparent);border:2px solid var(--accent-glow);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s;position:relative;overflow:hidden;backdrop-filter:blur(30px);-webkit-backdrop-filter:blur(30px)}
.play-btn::before{content:'';position:absolute;inset:0;border-radius:50%;background:radial-gradient(circle at 50% 50%,var(--accent-glow),transparent 70%);opacity:0;transition:opacity .3s}
.play-btn.active::before{opacity:1;animation:beatGlow var(--beat-dur,1s) ease-in-out infinite}
@keyframes beatGlow{0%,100%{opacity:.3}50%{opacity:.85}}
.play-btn:active{transform:scale(.95)}
.play-icon{width:56px;height:56px;position:relative;display:flex;align-items:center;justify-content:center}
.play-icon .tri{width:0;height:0;border-style:solid;border-width:24px 0 24px 42px;border-color:transparent transparent transparent var(--text);margin-left:8px;transition:all .2s;filter:drop-shadow(0 0 10px rgba(255,255,255,.3))}
.play-icon .bars{display:none;gap:11px;align-items:center;justify-content:center}
.play-icon .bar{width:9px;height:38px;background:var(--text);border-radius:4px;box-shadow:0 0 10px rgba(255,255,255,.3)}
.play-btn.active .tri{display:none}
.play-btn.active .bars{display:flex}

/* Timer ring */
.timer-ring{position:absolute;inset:-10px;border-radius:50%;pointer-events:none}
.timer-ring circle{fill:none;stroke-width:3;transform:rotate(-90deg);transform-origin:center}
.timer-ring .track{stroke:rgba(255,255,255,.05)}
.timer-ring .progress{stroke:var(--accent);stroke-linecap:round;transition:stroke-dashoffset .5s linear}

/* Timer display */
.timer-display{font-size:13px;color:var(--accent);letter-spacing:3px;font-weight:600;height:0;opacity:0;overflow:hidden;transition:opacity .3s,height .3s}
.timer-display.show{opacity:1;height:18px}

/* Presets — 3-column grid */
.presets{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}
.preset-card{padding:10px 6px;border-radius:14px;background:rgba(255,255,255,.04);border:1.5px solid var(--glass-border);cursor:pointer;transition:all .25s;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;text-align:center;min-width:0}
.preset-card:active{transform:scale(.96)}
.preset-card.active{border-color:var(--accent);background:rgba(108,92,231,.14);box-shadow:0 0 24px var(--accent-glow),inset 0 1px 0 rgba(255,255,255,.08)}
.preset-icon{font-size:20px;line-height:1;filter:drop-shadow(0 0 6px rgba(0,0,0,.3))}
.preset-name{font-size:11px;font-weight:700;letter-spacing:.2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
.preset-meta{display:flex;align-items:center;gap:4px}
.preset-dot{width:6px;height:6px;border-radius:50%;flex-shrink:0;box-shadow:0 0 6px currentColor}
.preset-hz{font-size:9px;color:var(--accent);font-weight:700;letter-spacing:.4px}

/* Slider controls */
.ctrl-group{margin-bottom:18px}
.ctrl-group:last-child{margin-bottom:0}
.ctrl-label{display:flex;justify-content:space-between;align-items:center;font-size:10px;color:var(--text-faint);margin-bottom:10px;letter-spacing:2px;text-transform:uppercase;font-weight:700}
.ctrl-val{color:var(--accent);font-weight:700;font-size:12px;letter-spacing:.5px;text-transform:none;text-shadow:0 0 10px var(--accent-glow)}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:3px;background:linear-gradient(90deg,rgba(255,255,255,.12),rgba(255,255,255,.05));outline:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;border-radius:50%;background:var(--accent);cursor:pointer;border:2px solid rgba(255,255,255,.3);box-shadow:0 0 12px var(--accent-glow),0 4px 12px rgba(0,0,0,.4);transition:transform .15s,box-shadow .2s}
input[type=range]:active::-webkit-slider-thumb{box-shadow:0 0 18px 5px var(--accent-glow);animation:thumbPulse .6s ease-in-out infinite;transform:scale(1.1)}
input[type=range]::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:var(--accent);cursor:pointer;border:2px solid rgba(255,255,255,.3);box-shadow:0 0 12px var(--accent-glow);transition:transform .15s,box-shadow .2s}
input[type=range]:active::-moz-range-thumb{box-shadow:0 0 18px 5px var(--accent-glow);animation:thumbPulse .6s ease-in-out infinite}
@keyframes thumbPulse{0%,100%{box-shadow:0 0 12px 2px var(--accent-glow)}50%{box-shadow:0 0 22px 7px var(--accent-glow)}}

/* Ambience tile grid — inspired by top50 tiles */
.amb-section{margin:0 24px}
.amb-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;padding:0 2px}
.amb-tile{position:relative;aspect-ratio:1/1.12;border-radius:16px;background:rgba(255,255,255,.03);overflow:hidden;cursor:pointer;user-select:none;-webkit-user-select:none;border:none;padding:0;font-family:inherit;isolation:isolate;transition:transform .15s;touch-action:none}
.amb-tile::before{content:"";position:absolute;inset:0;border-radius:inherit;box-shadow:inset 0 0 0 1px rgba(255,255,255,.075);pointer-events:none;z-index:3;transition:box-shadow .3s}
.amb-tile .amb-fill{position:absolute;left:0;right:0;bottom:0;height:0%;background:var(--tile-color,var(--accent));opacity:0;transition:height .32s cubic-bezier(.2,.7,.2,1),opacity .32s cubic-bezier(.2,.7,.2,1);z-index:1}
.amb-tile.active .amb-fill{opacity:1}
.amb-tile.muted .amb-fill{opacity:.22}
.amb-tile.dragging .amb-fill{transition:opacity 200ms}
.amb-tile.active::before{box-shadow:inset 0 0 0 1px rgba(255,255,255,.14),0 0 18px var(--accent-glow)}
.amb-tile .amb-content{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:space-between;padding:12px 12px 10px}
.amb-tile .amb-icon{width:20px;height:20px;color:var(--text-dim);transition:color .32s}
.amb-tile .amb-icon svg{width:100%;height:100%;display:block}
.amb-tile.active .amb-icon{color:rgba(255,255,255,.96)}
.amb-tile.muted .amb-icon{color:rgba(255,255,255,.5)}
.amb-tile .amb-label{font-size:10px;line-height:1.22;color:var(--text-dim);letter-spacing:.04em;font-weight:500;transition:color .32s}
.amb-tile.active .amb-label{color:var(--text)}

/* Panel (timer only) */
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:90;opacity:0;pointer-events:none;transition:opacity .3s}
.overlay.show{opacity:1;pointer-events:auto}
.panel{position:fixed;bottom:0;left:0;right:0;background:rgba(18,18,30,.95);border-radius:24px 24px 0 0;padding:20px 24px calc(24px + var(--safe-bottom));z-index:100;transform:translateY(100%);transition:transform .35s cubic-bezier(.32,.72,0,1);backdrop-filter:blur(40px);-webkit-backdrop-filter:blur(40px);border-top:1px solid var(--glass-border);max-height:70vh;overflow-y:auto}
.panel.show{transform:translateY(0)}
.panel.dragging{transition:none}
.panel-handle{width:40px;height:4px;background:rgba(255,255,255,.2);border-radius:2px;margin:0 auto 20px;cursor:grab;padding:10px 0;background-clip:content-box;touch-action:none}
.panel-title{font-size:16px;font-weight:700;margin-bottom:20px;letter-spacing:.5px}

/* Timer cards with arc */
.timer-card{padding:12px 8px;border-radius:14px;background:var(--glass);border:1.5px solid var(--glass-border);text-align:center;cursor:pointer;transition:all .2s;font-family:inherit;color:var(--text);display:flex;flex-direction:column;align-items:center;gap:6px}
.timer-card:active{transform:scale(.96)}
.timer-card.active{border-color:var(--accent);background:rgba(108,92,231,.15);box-shadow:0 0 15px var(--accent-glow);animation:timerGlowPulse 2s ease-in-out infinite}
@keyframes timerGlowPulse{0%,100%{box-shadow:0 0 12px var(--accent-glow)}50%{box-shadow:0 0 24px var(--accent-glow)}}
.timer-card-arc{width:44px;height:44px;flex-shrink:0}
.timer-card-arc circle{fill:none;stroke-width:3}
.timer-card-arc .arc-track{stroke:rgba(255,255,255,.08)}
.timer-card-arc .arc-fill{stroke:var(--accent);stroke-linecap:round;transform:rotate(-90deg);transform-origin:center}
.timer-card-label{font-size:15px;font-weight:600;line-height:1}
.timer-card-sub{font-size:10px;color:var(--text-dim);font-weight:400}
.timer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}

/* Toast */
.toast{position:fixed;top:calc(70px + var(--safe-top));left:50%;transform:translateX(-50%) translateY(-150px);background:rgba(18,18,30,.92);border:1px solid var(--glass-border);border-radius:16px;padding:12px 20px;font-size:13px;z-index:200;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);transition:transform .4s cubic-bezier(.32,.72,0,1);white-space:nowrap}
.toast.show{transform:translateX(-50%) translateY(0)}

/* Saved mixes - the save card reads as an outline "slot", saved mixes as normal presets */
.preset-card.add-mix{background:transparent;border:1.5px dashed rgba(255,255,255,.22);opacity:.6}
.preset-card.add-mix:active{opacity:.95}
.preset-card.add-mix .preset-icon{opacity:.85}
.preset-card.custom-mix .preset-icon{font-size:.9em}
.mixes-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.mixes-hint{margin-top:14px;text-align:center;font-size:9px;color:var(--text-faint);letter-spacing:2px;text-transform:uppercase}