/* Ferrari 458 GT3 — Production Real-Time Soundscape Dashboard */
/* ═══════════════════ CUSTOM PROPERTIES ═══════════════════ */
:root {
  --red: #DC143C;
  --red-dk: #B22222;
  --red-lt: #FF4500;
  --gold: #FFD700;
  --green: #28A745;
  --yellow: #FFC107;
  --danger: #DC3545;
  /* ── Apple Liquid Glass Surface System ── */
  --glass-bg: rgba(28,28,30,0.48);
  --glass-bg-deep: rgba(10,10,12,0.60);
  --glass-bg-card: rgba(36,36,40,0.42);
  --glass-bg-elem: rgba(44,44,50,0.38);
  --glass-bg-hover: rgba(58,58,66,0.35);
  --glass-border: rgba(255,255,255,0.10);
  --glass-border-hi: rgba(255,255,255,0.18);
  --glass-specular: rgba(255,255,255,0.08);
  --glass-refract: rgba(255,255,255,0.03);
  --glass-blur: 24px;
  --glass-blur-heavy: 40px;
  --glass-shadow: 0 8px 32px rgba(0,0,0,0.25), 0 1px 2px rgba(0,0,0,0.12);
  --glass-shadow-lg: 0 12px 48px rgba(0,0,0,0.35), 0 2px 4px rgba(0,0,0,0.15);
  /* ── legacy aliases ── */
  --bg-deep: var(--glass-bg-deep);
  --bg-surface: var(--glass-bg);
  --bg-card: var(--glass-bg-card);
  --bg-elem: var(--glass-bg-elem);
  --bg-hover: var(--glass-bg-hover);
  --border: var(--glass-border);
  --border-hi: var(--glass-border-hi);
  --text-1: #f5f5f7;
  --text-2: #a1a1a6;
  --text-3: #6e6e73;
  --glow: rgba(220,20,60,0.45);
  --glow-sm: rgba(220,20,60,0.25);
  --font-display: 'Orbitron', monospace;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
  --radius: 18px;
  --radius-sm: 12px;
  --fast: 0.18s ease-out;
  --med: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ═══════════════════ RESET ═══════════════════ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:15px}
body{
  font-family:var(--font-body);
  background:#050508;
  color:var(--text-1);
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
  overflow-x:hidden;
}

/* GIF Background */
.bg-video{
  position:fixed;inset:0;z-index:0;
  overflow:hidden;pointer-events:none;
}
.bg-video img{
  width:100%;height:100%;object-fit:cover;
  filter:blur(3px) brightness(0.45) saturate(0.6);
  transform:scale(1.05);
}

/* ═══════════════════ APP SHELL ═══════════════════ */
.app-container{
  max-width:1880px;
  margin:0 auto;
  min-height:100vh;
  display:flex;
  flex-direction:column;
  border-left:0.5px solid var(--glass-border);
  border-right:0.5px solid var(--glass-border);
  background:rgba(18,18,22,0.38);
  position:relative;z-index:1;
  backdrop-filter:blur(4px) saturate(1.1);
  -webkit-backdrop-filter:blur(4px) saturate(1.1);
}
.app-container::before{
  content:'';position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse 60% 40% at 50% 0%,rgba(220,20,60,0.04),transparent);
  z-index:0;
}

/* ═══════════════════ INTRO POPUP ═══════════════════ */
.popup-overlay{
  position:fixed;inset:0;z-index:9998;
  background:rgba(4,4,8,0.7);
  backdrop-filter:blur(24px) saturate(1.2);-webkit-backdrop-filter:blur(24px) saturate(1.2);
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;visibility:hidden;
  transition:opacity .4s ease, visibility .4s;
}
.popup-overlay.active{opacity:1;pointer-events:auto;visibility:visible}

.popup-box{
  background:rgba(32,32,36,0.52);
  backdrop-filter:blur(var(--glass-blur-heavy)) saturate(1.6);
  -webkit-backdrop-filter:blur(var(--glass-blur-heavy)) saturate(1.6);
  border:0.5px solid rgba(255,255,255,0.16);
  border-radius:28px;
  padding:36px 40px 32px;
  max-width:520px;width:92%;
  position:relative;
  box-shadow:
    0 24px 80px rgba(0,0,0,0.5),
    0 4px 16px rgba(0,0,0,0.2),
    0 0 0 0.5px rgba(255,255,255,0.06) inset,
    0 0.5px 0 rgba(255,255,255,0.1) inset;
  animation:popup-enter .5s cubic-bezier(0.25,0.46,0.45,0.94);
  max-height:90vh;overflow-y:auto;
}
@keyframes popup-enter{
  from{opacity:0;transform:scale(.92) translateY(20px)}
  to{opacity:1;transform:scale(1) translateY(0)}
}

.popup-close{
  position:absolute;top:14px;right:14px;
  background:rgba(44,44,50,0.50);
  backdrop-filter:blur(12px) saturate(1.3);
  -webkit-backdrop-filter:blur(12px) saturate(1.3);
  border:0.5px solid rgba(255,255,255,0.14);
  color:var(--text-2);font-size:1.3rem;
  width:32px;height:32px;border-radius:50%;
  cursor:pointer;transition:all var(--med);
  display:flex;align-items:center;justify-content:center;
  line-height:1;
  box-shadow:0 2px 8px rgba(0,0,0,0.2),inset 0 0.5px 0 rgba(255,255,255,0.08);
}
.popup-close:hover{
  color:#fff;background:rgba(220,20,60,0.55);
  border-color:rgba(220,20,60,0.4);
  box-shadow:0 4px 16px rgba(220,20,60,0.25),inset 0 0.5px 0 rgba(255,255,255,0.12);
  transform:scale(1.08);
}

.popup-header{text-align:center;margin-bottom:24px}
.popup-header svg{margin-bottom:10px;filter:drop-shadow(0 0 10px var(--glow))}
.popup-header h2{
  font-family:var(--font-display);font-size:1.5rem;font-weight:900;
  color:var(--text-1);letter-spacing:2px;
  text-shadow:0 0 14px var(--glow-sm);
}
.popup-subtitle{
  font-size:.75rem;color:var(--text-3);letter-spacing:3px;
  text-transform:uppercase;margin-top:4px;
}

.popup-author{
  text-align:center;margin-bottom:24px;
  padding:14px 0;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.author-label{
  display:block;font-size:.65rem;color:var(--text-3);
  letter-spacing:1px;text-transform:uppercase;margin-bottom:4px;
}
.author-name{
  display:block;font-family:var(--font-display);
  font-size:1.15rem;font-weight:700;color:var(--red);
  letter-spacing:1px;margin-bottom:10px;
  text-shadow:0 0 8px var(--glow-sm);
}
.linkedin-link{
  display:inline-flex;align-items:center;gap:6px;
  color:#0A66C2;font-size:.78rem;font-weight:600;
  text-decoration:none;padding:6px 14px;
  background:rgba(10,102,194,0.08);
  backdrop-filter:blur(8px) saturate(1.2);
  -webkit-backdrop-filter:blur(8px) saturate(1.2);
  border:0.5px solid rgba(10,102,194,0.22);
  border-radius:var(--radius-sm);
  transition:all var(--med);
  box-shadow:inset 0 0.5px 0 rgba(255,255,255,0.06);
}
.linkedin-link:hover{
  background:rgba(10,102,194,0.16);
  border-color:rgba(10,102,194,0.4);
  box-shadow:0 4px 16px rgba(10,102,194,0.15),inset 0 0.5px 0 rgba(255,255,255,0.08);
  transform:translateY(-1px);
}

.popup-guide{margin-bottom:20px}
.popup-guide h3{
  font-family:var(--font-display);font-size:.8rem;font-weight:700;
  color:var(--text-2);letter-spacing:1.5px;margin-bottom:12px;
}
.popup-guide ol{
  list-style:none;counter-reset:steps;
  padding:0;margin:0;
}
.popup-guide ol li{
  counter-increment:steps;
  position:relative;padding:6px 0 6px 30px;
  font-size:.8rem;color:var(--text-2);line-height:1.5;
}
.popup-guide ol li::before{
  content:counter(steps);
  position:absolute;left:0;top:6px;
  width:20px;height:20px;border-radius:50%;
  background:var(--bg-elem);border:1px solid var(--red);
  color:var(--red);font-family:var(--font-display);
  font-size:.6rem;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.popup-guide ol li strong{color:var(--text-1)}
.popup-guide ol li em{color:var(--red);font-style:normal}

.popup-keys{
  display:flex;flex-wrap:wrap;gap:10px;
  margin:12px 0;padding:10px;
  background:rgba(36,36,40,0.40);
  backdrop-filter:blur(10px) saturate(1.2);
  -webkit-backdrop-filter:blur(10px) saturate(1.2);
  border-radius:var(--radius-sm);
  border:0.5px solid var(--glass-border);
  box-shadow:inset 0 0.5px 0 var(--glass-specular);
}
.popup-keys span{
  font-size:.65rem;color:var(--text-3);
  display:flex;align-items:center;gap:3px;
}
.popup-keys kbd{
  font-family:var(--font-display);font-size:.55rem;
  background:var(--bg-deep);color:var(--text-2);
  padding:2px 6px;border-radius:3px;
  border:1px solid var(--border);min-width:18px;text-align:center;
}

.popup-tip{
  font-size:.72rem;color:var(--text-3);
  font-style:italic;margin-top:8px;
  padding-left:4px;
}

.popup-cta{
  display:flex;align-items:flex-start;gap:10px;
  margin-bottom:20px;padding:14px 16px;
  background:rgba(36,36,40,0.35);
  backdrop-filter:blur(10px) saturate(1.2);
  -webkit-backdrop-filter:blur(10px) saturate(1.2);
  border:0.5px solid rgba(10,102,194,0.18);
  border-radius:var(--radius-sm);
  box-shadow:inset 0 0.5px 0 rgba(255,255,255,0.06);
}
.popup-cta svg{flex-shrink:0;color:var(--red);margin-top:2px}
.popup-cta p{font-size:.78rem;color:var(--text-2);line-height:1.5;margin:0}
.popup-cta strong{color:var(--gold)}
.popup-cta a{
  color:#0A66C2;font-weight:700;text-decoration:none;
  border-bottom:1px solid rgba(10,102,194,0.3);
  transition:all var(--fast);
}
.popup-cta a:hover{
  color:#0d80f2;border-bottom-color:#0d80f2;
  text-shadow:0 0 6px rgba(10,102,194,0.3);
}

.popup-start{
  display:block;width:100%;padding:14px;
  background:linear-gradient(135deg,rgba(220,20,60,0.75),rgba(200,30,60,0.65));
  backdrop-filter:blur(16px) saturate(1.4);
  -webkit-backdrop-filter:blur(16px) saturate(1.4);
  color:#fff;border:0.5px solid rgba(255,255,255,0.18);border-radius:var(--radius);
  font-family:var(--font-display);font-size:.9rem;font-weight:700;
  letter-spacing:3px;cursor:pointer;position:relative;overflow:hidden;
  box-shadow:
    0 8px 24px rgba(220,20,60,0.3),
    0 2px 6px rgba(0,0,0,0.15),
    inset 0 0.5px 0 rgba(255,255,255,0.25);
  transition:all var(--med);
}
.popup-start::before{
  content:'';position:absolute;top:0;left:0;right:0;height:50%;
  background:linear-gradient(180deg,rgba(255,255,255,0.12),transparent);
  border-radius:inherit;
  pointer-events:none;
}
.popup-start:hover{
  transform:translateY(-2px);
  box-shadow:
    0 12px 36px rgba(220,20,60,0.4),
    0 4px 12px rgba(0,0,0,0.2),
    inset 0 0.5px 0 rgba(255,255,255,0.3);
}

/* Help & Info button (Liquid Glass pill) */
.help-toggle{
  background:rgba(44,44,50,0.50);
  backdrop-filter:blur(12px) saturate(1.3);
  -webkit-backdrop-filter:blur(12px) saturate(1.3);
  border:0.5px solid rgba(255,255,255,0.14);
  color:var(--text-2);width:36px;height:36px;
  border-radius:50%;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:all var(--med);flex-shrink:0;
  margin-right:8px;
  box-shadow:0 2px 8px rgba(0,0,0,0.18),inset 0 0.5px 0 rgba(255,255,255,0.08);
  position:relative;
}
.help-toggle::after{
  content:'';position:absolute;inset:0;border-radius:inherit;
  background:linear-gradient(175deg,rgba(255,255,255,0.06) 0%,transparent 50%);
  pointer-events:none;
}
.help-toggle:hover{
  color:#fff;background:rgba(220,20,60,0.45);
  border-color:rgba(220,20,60,0.35);
  box-shadow:0 4px 16px rgba(220,20,60,0.25),0 0 20px rgba(220,20,60,0.12),
    inset 0 0.5px 0 rgba(255,255,255,0.12);
  transform:scale(1.08);
}
.help-toggle:active{transform:scale(0.95)}

/* ═══════════════════ HEADER ═══════════════════ */
.app-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 28px;
  background:rgba(28,28,30,0.52);
  backdrop-filter:blur(var(--glass-blur-heavy)) saturate(1.5);
  -webkit-backdrop-filter:blur(var(--glass-blur-heavy)) saturate(1.5);
  border-bottom:0.5px solid rgba(255,255,255,0.12);
  position:relative;z-index:1;
  gap:20px;
  flex-wrap:wrap;
  box-shadow:
    inset 0 -0.5px 0 rgba(255,255,255,0.06),
    0 4px 24px rgba(0,0,0,0.3),
    0 1px 2px rgba(0,0,0,0.12);
}
.app-header::after{
  content:'';position:absolute;bottom:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(220,20,60,0.35),transparent);
  filter:blur(2px);
}

.header-left{display:flex;align-items:center;gap:16px}
.ferrari-badge{width:44px;height:44px;flex-shrink:0}
.badge-svg{filter:drop-shadow(0 0 8px var(--glow))}
.header-title-group h1{
  font-family:var(--font-display);font-size:1.5rem;font-weight:900;
  letter-spacing:2px;color:var(--text-1);
  text-shadow:0 0 16px var(--glow-sm);
}
.header-title-group h1 .accent{color:var(--red)}
.header-title-group h2{
  font-size:.65rem;font-weight:500;color:var(--text-3);
  letter-spacing:4px;text-transform:uppercase;margin-top:2px;
}

/* Telemetry Bar */
.header-center{flex:1;display:flex;justify-content:center}
.header-telemetry{
  display:flex;gap:0;align-items:stretch;
  background:rgba(28,28,30,0.45);
  backdrop-filter:blur(var(--glass-blur)) saturate(1.3);
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(1.3);
  border-radius:var(--radius);
  border:0.5px solid var(--glass-border-hi);
  overflow:hidden;
  box-shadow:var(--glass-shadow),inset 0 0.5px 0 var(--glass-specular);
}
.telemetry-item{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:6px 14px;min-width:64px;
  border-right:1px solid rgba(255,255,255,0.06);
}
.telemetry-item:last-child{border-right:none}
.telemetry-label{font-size:.55rem;font-weight:600;color:var(--text-3);letter-spacing:1px;text-transform:uppercase}
.telemetry-value{font-family:var(--font-display);font-size:1.15rem;font-weight:700;color:var(--text-1);line-height:1.1}
.gear-value{
  color:var(--red);font-size:1.5rem;
  text-shadow:0 0 10px var(--glow);
  transition:all var(--fast);
}
.gear-value.flash{transform:scale(1.3);color:var(--red-lt)}
.speed-value{color:var(--red-lt);font-size:1.3rem}

.temp-display-wrap.hot .telemetry-value{color:var(--danger);animation:pulse-warn .6s infinite alternate}
.temp-display-wrap.warm .telemetry-value{color:var(--yellow)}

/* Status */
.header-right{display:flex;align-items:center;gap:14px}
.system-status{
  display:flex;align-items:center;gap:8px;
  padding:8px 16px;
  background:rgba(36,36,40,0.42);
  backdrop-filter:blur(16px) saturate(1.3);
  -webkit-backdrop-filter:blur(16px) saturate(1.3);
  border-radius:var(--radius);
  border:0.5px solid var(--glass-border-hi);
  box-shadow:var(--glass-shadow),inset 0 0.5px 0 var(--glass-specular);
}
.status-dot{
  width:10px;height:10px;border-radius:50%;
  background:var(--danger);box-shadow:0 0 8px var(--danger);
  transition:all var(--med);
}
.status-text{font-size:.7rem;font-weight:600;color:var(--text-2);letter-spacing:1px;text-transform:uppercase}

/* Master VU mini */
.audio-meter-mini{
  width:80px;height:8px;background:var(--bg-elem);
  border-radius:4px;overflow:hidden;border:1px solid var(--border);
}
.vu-fill{
  height:100%;width:0%;
  background:linear-gradient(90deg,var(--red),var(--red-lt),var(--gold));
  transition:width 50ms linear;
  border-radius:4px;
}

/* ═══════════════════ DASHBOARD GRID ═══════════════════ */
.dashboard{
  display:grid;
  grid-template-columns:340px 1fr;
  gap:20px;
  padding:20px;
  flex:1;
  min-height:0;
  position:relative;z-index:1;
}

/* LEFT PANEL */
.panel-left{
  display:flex;flex-direction:column;gap:16px;
  overflow-y:auto;max-height:calc(100vh - 130px);
  padding-right:6px;
  scrollbar-width:thin;
  scrollbar-color:var(--red-dk) var(--bg-deep);
}

/* RIGHT PANEL */
.panel-right{
  display:flex;flex-direction:column;gap:16px;
  overflow-y:auto;max-height:calc(100vh - 130px);
  scrollbar-width:thin;
  scrollbar-color:var(--red-dk) var(--bg-deep);
}

/* ═══════════════════ CARDS (Apple Liquid Glass) ═══════════════════ */
.card{
  background:var(--glass-bg-card);
  backdrop-filter:blur(var(--glass-blur)) saturate(1.4);
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(1.4);
  border:0.5px solid var(--glass-border-hi);
  border-radius:var(--radius);
  padding:20px;
  position:relative;
  overflow:hidden;
  box-shadow:
    var(--glass-shadow),
    inset 0 0.5px 0 var(--glass-specular),
    inset 0 0 0 0.5px var(--glass-refract);
  transition:box-shadow var(--med),border-color var(--med),transform var(--med);
}
.card:hover{
  border-color:rgba(255,255,255,0.22);
  transform:translateY(-1px);
  box-shadow:
    var(--glass-shadow-lg),
    inset 0 0.5px 0 rgba(255,255,255,0.12),
    inset 0 0 0 0.5px var(--glass-refract);
}
/* Top specular highlight — Apple-style light refraction line */
.card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,
    transparent 5%,
    rgba(255,255,255,0.18) 20%,
    rgba(255,255,255,0.08) 50%,
    rgba(255,255,255,0.18) 80%,
    transparent 95%);
}
/* Subtle inner light refraction tint */
.card::after{
  content:'';position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(175deg,rgba(255,255,255,0.025) 0%,transparent 40%);
  border-radius:inherit;
}
.card-title{
  font-family:var(--font-display);font-size:.75rem;font-weight:700;
  color:var(--text-2);letter-spacing:1.5px;
  margin-bottom:16px;padding-bottom:8px;
  border-bottom:1px solid var(--border-hi);
}

/* ═══════════════════ TACHOMETER ═══════════════════ */
.tach-card{
  display:flex;flex-direction:column;align-items:center;gap:12px;
  padding:16px;
}
#tach-canvas{
  width:260px;height:260px;
  border-radius:50%;
  display:block;
}
.shift-lights{display:flex;gap:8px}
.sled{
  width:14px;height:14px;border-radius:50%;
  background:var(--bg-elem);border:1px solid var(--border);
  transition:all var(--fast);
}
.sled.on{
  background:var(--red);
  box-shadow:0 0 10px var(--red),0 0 20px var(--glow);
  border-color:var(--red);
}

/* ═══════════════════ PARAMETER SLIDERS ═══════════════════ */
.params-card{display:flex;flex-direction:column;gap:14px}
.param-row{position:relative}
.param-row label{
  display:block;font-size:.7rem;font-weight:600;
  color:var(--text-3);letter-spacing:1px;margin-bottom:6px;
}
.param-row.highlight label{color:var(--red);text-shadow:0 0 6px var(--glow-sm)}

.slider-group{
  display:flex;align-items:center;gap:12px;
  background:rgba(28,28,30,0.35);
  backdrop-filter:blur(12px) saturate(1.2);
  -webkit-backdrop-filter:blur(12px) saturate(1.2);
  padding:10px 14px;border-radius:var(--radius-sm);
  border:0.5px solid var(--glass-border);
  box-shadow:inset 0 0.5px 0 var(--glass-specular),0 2px 8px rgba(0,0,0,0.1);
  transition:border-color var(--fast),box-shadow var(--fast);
}
.slider-group:hover,.slider-group:focus-within{
  border-color:rgba(220,20,60,0.35);
  box-shadow:inset 0 0.5px 0 rgba(255,255,255,0.1),0 0 16px var(--glow-sm);
}

/* Range slider */
input[type=range]{
  -webkit-appearance:none;appearance:none;
  flex:1;height:6px;
  background:linear-gradient(90deg,#2a2a34,#3a3a44);
  border-radius:3px;cursor:pointer;outline:none;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:22px;height:22px;
  background:linear-gradient(135deg,var(--red),var(--red-lt));
  border-radius:50%;border:2px solid #fff;
  box-shadow:0 0 0 1px var(--red),0 2px 6px rgba(0,0,0,.4);
  cursor:pointer;transition:transform var(--fast);
}
input[type=range]::-moz-range-thumb{
  width:22px;height:22px;
  background:linear-gradient(135deg,var(--red),var(--red-lt));
  border-radius:50%;border:2px solid #fff;
  box-shadow:0 0 0 1px var(--red),0 2px 6px rgba(0,0,0,.4);
  cursor:pointer;
}
input[type=range]:hover::-webkit-slider-thumb{transform:scale(1.15);box-shadow:0 0 12px var(--glow)}
input[type=range]:hover::-moz-range-thumb{transform:scale(1.15);box-shadow:0 0 12px var(--glow)}

output{
  font-family:var(--font-display);font-weight:700;font-size:.85rem;
  color:var(--text-1);min-width:50px;text-align:right;
  background:rgba(20,20,22,0.50);
  backdrop-filter:blur(10px) saturate(1.2);
  -webkit-backdrop-filter:blur(10px) saturate(1.2);
  padding:6px 10px;border-radius:var(--radius-sm);
  border:0.5px solid rgba(255,255,255,0.08);
  box-shadow:inset 0 0.5px 0 rgba(255,255,255,0.04);
}
output.big{
  font-size:1.4rem;color:var(--red);text-shadow:0 0 8px var(--glow-sm);
  min-width:70px;
}

/* State labels */
.state-labels{
  display:flex;justify-content:space-between;
  font-size:.6rem;color:var(--text-3);margin-top:6px;padding:0 4px;
}
.state-labels span.lit{color:var(--red);font-weight:700}

/* ═══════════════════ IGNITION BUTTON ═══════════════════ */
.control-card{text-align:center}
.ignition-wrap{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:8px 0 4px;
}

/* Outer animated ring container */
.ignition-ring{
  position:relative;
  width:120px;height:120px;
  display:flex;align-items:center;justify-content:center;
}

/* Spinning arc — the attention-grabbing orbital */
.ignition-ring::before{
  content:'';position:absolute;inset:-6px;
  border-radius:50%;
  border:3px solid transparent;
  border-top-color:var(--red);
  border-right-color:rgba(255,69,0,0.5);
  animation:ignition-spin 1.8s linear infinite;
  filter:drop-shadow(0 0 6px var(--glow));
}
/* Second counter-rotating arc */
.ignition-ring::after{
  content:'';position:absolute;inset:-12px;
  border-radius:50%;
  border:2px solid transparent;
  border-bottom-color:rgba(220,20,60,0.4);
  border-left-color:rgba(255,69,0,0.25);
  animation:ignition-spin 2.8s linear infinite reverse;
  filter:drop-shadow(0 0 4px rgba(220,20,60,0.2));
}

/* The button itself — large circular power button */
.btn-ignition{
  width:100px;height:100px;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:radial-gradient(circle at 40% 35%,
    rgba(60,60,70,0.7) 0%,
    rgba(36,36,40,0.85) 50%,
    rgba(20,20,24,0.95) 100%);
  backdrop-filter:blur(var(--glass-blur)) saturate(1.3);
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(1.3);
  border:0.5px solid rgba(255,255,255,0.18);
  color:var(--red);
  cursor:pointer;
  position:relative;z-index:1;
  box-shadow:
    0 8px 32px rgba(0,0,0,0.4),
    0 0 0 1px rgba(220,20,60,0.15),
    inset 0 1px 1px rgba(255,255,255,0.15),
    inset 0 -2px 4px rgba(0,0,0,0.3);
  transition:all 0.3s cubic-bezier(0.25,0.46,0.45,0.94);
  animation:ignition-breathe 2.5s ease-in-out infinite;
}
.btn-ignition .ignition-icon{
  filter:drop-shadow(0 0 8px var(--glow));
  transition:transform var(--fast),filter var(--fast);
}

/* Breathing glow animation */
@keyframes ignition-breathe{
  0%,100%{
    box-shadow:
      0 8px 32px rgba(0,0,0,0.4),
      0 0 0 1px rgba(220,20,60,0.15),
      0 0 20px rgba(220,20,60,0.15),
      inset 0 1px 1px rgba(255,255,255,0.15),
      inset 0 -2px 4px rgba(0,0,0,0.3);
  }
  50%{
    box-shadow:
      0 8px 32px rgba(0,0,0,0.4),
      0 0 0 1px rgba(220,20,60,0.35),
      0 0 40px rgba(220,20,60,0.35),
      0 0 80px rgba(220,20,60,0.1),
      inset 0 1px 1px rgba(255,255,255,0.2),
      inset 0 -2px 4px rgba(0,0,0,0.3);
  }
}
@keyframes ignition-spin{
  to{transform:rotate(360deg)}
}

.btn-ignition:hover:not(:disabled){
  transform:scale(1.08);
  color:#fff;
  border-color:rgba(220,20,60,0.5);
  box-shadow:
    0 8px 40px rgba(0,0,0,0.5),
    0 0 0 2px rgba(220,20,60,0.4),
    0 0 60px rgba(220,20,60,0.4),
    inset 0 1px 1px rgba(255,255,255,0.2),
    inset 0 -2px 4px rgba(0,0,0,0.3);
  animation:none;
}
.btn-ignition:hover:not(:disabled) .ignition-icon{
  transform:scale(1.1);
  filter:drop-shadow(0 0 14px rgba(220,20,60,0.8));
}
.btn-ignition:active:not(:disabled){
  transform:scale(0.95);
  transition-duration:0.1s;
}
.btn-ignition:disabled{
  background:rgba(30,30,34,0.7);
  color:var(--text-3);
  border-color:rgba(255,255,255,0.06);
  cursor:not-allowed;
  box-shadow:0 4px 16px rgba(0,0,0,0.3);
  animation:none;
}
.btn-ignition:disabled .ignition-icon{filter:none;opacity:.3}

/* Labels beneath button */
.ignition-label{
  font-family:var(--font-display);
  font-size:.72rem;font-weight:700;
  letter-spacing:3px;color:var(--text-2);
  animation:ignition-text-pulse 2.5s ease-in-out infinite;
}
.ignition-hint{
  font-size:.6rem;color:var(--text-3);
}
.ignition-hint kbd{
  font-family:var(--font-display);font-size:.5rem;
  background:rgba(30,30,42,0.45);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  color:var(--text-2);
  padding:2px 6px;border-radius:5px;
  border:0.5px solid rgba(255,255,255,0.1);
  min-width:18px;text-align:center;
}
@keyframes ignition-text-pulse{
  0%,100%{opacity:.7}
  50%{opacity:1;text-shadow:0 0 8px var(--glow-sm)}
}

/* Master section */
.master-section{margin-top:16px}
.master-row{
  display:flex;align-items:center;gap:10px;
  margin-bottom:14px;
}
.master-row label{
  font-size:.65rem;font-weight:600;color:var(--text-3);
  letter-spacing:1px;white-space:nowrap;min-width:70px;
}
.master-row output{font-size:.8rem;min-width:50px}

/* ── Environment Reverb Selector ── */
.env-reverb-section{
  margin-bottom:14px;
  padding-top:10px;border-top:1px solid var(--border);
}
.env-reverb-section h4{
  font-size:.65rem;font-weight:600;color:var(--text-3);
  letter-spacing:1px;margin-bottom:10px;
}
.env-selector{
  display:grid;grid-template-columns:repeat(5,1fr);gap:6px;
  margin-bottom:12px;
}
.env-btn{
  display:flex;flex-direction:column;align-items:center;gap:4px;
  padding:8px 4px;
  background:rgba(36,36,40,0.40);
  backdrop-filter:blur(12px) saturate(1.2);
  -webkit-backdrop-filter:blur(12px) saturate(1.2);
  border:0.5px solid var(--glass-border);
  border-radius:var(--radius-sm);
  color:var(--text-3);cursor:pointer;
  transition:all var(--med);
  position:relative;overflow:hidden;
}
.env-btn span{
  font-family:var(--font-display);font-size:.42rem;font-weight:600;
  letter-spacing:1px;line-height:1;
}
.env-btn svg{opacity:.6;transition:opacity var(--fast)}
.env-btn:hover{
  color:var(--text-2);border-color:rgba(255,255,255,0.18);
  background:rgba(50,50,56,0.45);
  transform:translateY(-1px);
}
.env-btn:hover svg{opacity:.9}
.env-btn.active{
  color:var(--red);border-color:rgba(220,20,60,0.4);
  background:rgba(220,20,60,0.1);
  box-shadow:0 0 12px rgba(220,20,60,0.15),inset 0 1px 0 rgba(255,255,255,0.08);
}
.env-btn.active svg{opacity:1;stroke:var(--red)}
.env-btn.active span{color:var(--red)}
/* Active glow pulse */
.env-btn.active::after{
  content:'';position:absolute;bottom:0;left:10%;right:10%;height:2px;
  background:var(--red);border-radius:2px;
  box-shadow:0 0 8px var(--glow);
  animation:env-glow 2s ease-in-out infinite;
}
@keyframes env-glow{
  0%,100%{opacity:.4}
  50%{opacity:1}
}
.env-controls{margin-top:4px}
.env-controls .master-row{margin-bottom:8px}

.fx-chain-status h4{
  font-size:.65rem;font-weight:600;color:var(--text-3);
  letter-spacing:1px;margin-bottom:8px;border-bottom:1px solid var(--border);padding-bottom:4px;
}
.fx-chain-status ul{list-style:none}
.fx-chain-status li{
  font-size:.7rem;color:var(--text-3);padding:3px 0 3px 16px;position:relative;
}
.fx-chain-status li::before{
  content:'●';position:absolute;left:0;font-size:.5rem;
  color:var(--text-3);top:4px;
}
.fx-chain-status li.fx-active{color:var(--green)}
.fx-chain-status li.fx-active::before{color:var(--green)}

/* ═══════════════════ VISUALIZATION ROW ═══════════════════ */
.viz-row{
  display:grid;grid-template-columns:1fr 1fr;gap:12px;
}
.viz-panel{
  background:rgba(18,18,22,0.50);
  backdrop-filter:blur(var(--glass-blur)) saturate(1.3);
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(1.3);
  border:0.5px solid var(--glass-border-hi);
  border-radius:var(--radius);padding:14px 16px;
  position:relative;overflow:hidden;
  box-shadow:var(--glass-shadow),inset 0 0.5px 0 var(--glass-specular);
}
.viz-panel::before{
  content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent 5%,rgba(255,255,255,0.12) 30%,rgba(255,255,255,0.06) 50%,rgba(255,255,255,0.12) 70%,transparent 95%);
}
.viz-title{
  font-family:var(--font-display);font-size:.6rem;font-weight:700;
  color:var(--text-3);letter-spacing:1.5px;margin-bottom:8px;
}
#spectrum-canvas,#waveform-canvas{
  width:100%;height:100px;display:block;
  border-radius:var(--radius-sm);
  background:rgba(6,6,10,0.5);
  border:1px solid rgba(255,255,255,0.04);
}

/* ═══════════════════ SOUND LAYERS ═══════════════════ */
.layers-section{
  background:rgba(28,28,30,0.38);
  backdrop-filter:blur(var(--glass-blur)) saturate(1.3);
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(1.3);
  border:0.5px solid var(--glass-border-hi);
  border-radius:var(--radius);overflow:hidden;flex:1;
  display:flex;flex-direction:column;
  box-shadow:var(--glass-shadow),inset 0 0.5px 0 var(--glass-specular);
}
.layers-header{
  display:flex;justify-content:space-between;align-items:center;
  padding:16px 20px 12px;border-bottom:1px solid var(--border);
}
.layers-header .card-title{margin-bottom:0;padding-bottom:0;border-bottom:none}
.active-count{
  font-family:var(--font-display);font-size:.65rem;color:var(--text-3);
  letter-spacing:1px;
}
.layers-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:14px;padding:16px;flex:1;overflow-y:auto;
  max-height:calc(100vh - 380px);
  scrollbar-width:thin;scrollbar-color:var(--red-dk) var(--bg-deep);
}

/* Sound Layer Card (Apple Liquid Glass) */
.sound-layer{
  background:rgba(36,36,40,0.35);
  backdrop-filter:blur(16px) saturate(1.25);
  -webkit-backdrop-filter:blur(16px) saturate(1.25);
  border:0.5px solid var(--glass-border);
  border-radius:var(--radius);padding:14px;
  transition:all var(--med);position:relative;
  box-shadow:0 4px 16px rgba(0,0,0,0.15),0 1px 2px rgba(0,0,0,0.08),
    inset 0 0.5px 0 var(--glass-specular);
}
.sound-layer:hover{
  border-color:rgba(255,255,255,0.16);
  transform:translateY(-1px);
  box-shadow:0 6px 24px rgba(0,0,0,0.22),0 1px 3px rgba(0,0,0,0.1),
    inset 0 0.5px 0 rgba(255,255,255,0.1);
}
.sound-layer::after{
  content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent 10%,rgba(220,20,60,0.4) 50%,transparent 90%);
  opacity:0;transition:opacity var(--med);
}
.sound-layer.has-active{
  border-color:rgba(220,20,60,0.3);
  background:rgba(42,28,32,0.38);
  box-shadow:0 4px 20px rgba(0,0,0,0.2),0 0 20px var(--glow-sm),
    inset 0 0.5px 0 rgba(255,255,255,0.1);
}
.sound-layer.has-active::after{opacity:1}

.layer-head{
  display:flex;justify-content:space-between;align-items:center;
  margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid var(--border);
}
.layer-head h4{
  font-family:var(--font-display);font-size:.7rem;font-weight:700;
  color:var(--text-2);letter-spacing:1px;
}
.layer-vol{
  font-family:var(--font-display);font-size:.6rem;font-weight:600;
  color:var(--text-3);padding:3px 8px;
  background:var(--bg-deep);border-radius:var(--radius-sm);border:1px solid var(--border);
}
.layer-vol.lit{color:var(--red);border-color:var(--red);text-shadow:0 0 4px var(--glow-sm)}

.instr-list{display:flex;flex-direction:column;gap:8px}

/* Instrument Card (Liquid Glass) */
.instr-card{
  background:rgba(14,14,22,0.4);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,0.05);
  border-radius:var(--radius-sm);padding:10px 12px;
  transition:all var(--med);
  border-left:3px solid transparent;
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.03);
}
.instr-card.active{
  border-left-color:var(--red);
  background:linear-gradient(90deg,rgba(220,20,60,0.08),rgba(14,14,22,0.4));
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.06),0 0 12px var(--glow-sm);
}
.instr-card.inactive{opacity:.45;filter:saturate(.3)}
.instr-card.error{
  border-left-color:var(--danger);
  background:rgba(220,53,69,0.06);
}

.instr-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.instr-name{
  font-size:.72rem;font-weight:600;color:var(--text-2);
  font-family:var(--font-display);
}
.multi-tag{
  font-size:.55rem;background:var(--bg-hover);padding:1px 5px;
  border-radius:3px;font-style:normal;color:var(--text-3);
}
.instr-status{
  font-size:.55rem;font-weight:600;color:var(--text-3);
  letter-spacing:.5px;text-transform:uppercase;
}
.instr-card.active .instr-status{color:var(--red)}
.instr-card.error .instr-status{color:var(--danger)}

.instr-meters{
  display:flex;gap:8px;align-items:center;margin-bottom:8px;
  font-family:var(--font-display);font-size:.6rem;
}
.meter-lbl{color:var(--text-3);font-weight:600}
.meter-val{color:var(--text-2);font-weight:700;min-width:52px}

.instr-bar-wrap{
  width:100%;height:5px;background:var(--bg-hover);
  border-radius:3px;overflow:hidden;
}
.instr-bar{
  height:100%;width:0%;
  background:linear-gradient(90deg,var(--red),var(--red-lt),var(--gold));
  border-radius:3px;transition:width 60ms linear;
}
.instr-card.error .instr-bar{background:var(--danger)}

/* ═══════════════════ FOOTER ═══════════════════ */
.app-footer{
  padding:12px 28px;
  background:rgba(28,28,30,0.48);
  backdrop-filter:blur(var(--glass-blur)) saturate(1.4);
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(1.4);
  border-top:0.5px solid rgba(255,255,255,0.12);
  display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:8px;
  position:relative;z-index:1;
  box-shadow:inset 0 0.5px 0 var(--glass-specular);
}
.keyboard-hints{
  display:flex;gap:14px;flex-wrap:wrap;
}
.keyboard-hints span{
  font-size:.65rem;color:var(--text-3);display:flex;align-items:center;gap:4px;
}
kbd{
  font-family:var(--font-display);font-size:.55rem;
  background:rgba(44,44,50,0.50);
  backdrop-filter:blur(8px) saturate(1.2);
  -webkit-backdrop-filter:blur(8px) saturate(1.2);
  color:var(--text-2);
  padding:3px 7px;border-radius:6px;
  border:0.5px solid rgba(255,255,255,0.12);
  min-width:18px;text-align:center;
  box-shadow:0 1px 3px rgba(0,0,0,0.2),inset 0 0.5px 0 rgba(255,255,255,0.08);
}
.copyright{font-size:.6rem;color:var(--text-3)}

.footer-center{display:flex;flex-direction:column;align-items:flex-end;gap:4px}
.footer-cta{
  font-size:.68rem;color:var(--text-3);
}
.footer-cta a{
  color:#0A66C2;font-weight:700;text-decoration:none;
  border-bottom:1px solid rgba(10,102,194,0.25);
  transition:all var(--fast);
}
.footer-cta a:hover{
  color:#0d80f2;border-bottom-color:#0d80f2;
  text-shadow:0 0 6px rgba(10,102,194,0.25);
}

/* ═══════════════════ SCROLLBARS ═══════════════════ */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:var(--bg-deep);border-radius:4px}
::-webkit-scrollbar-thumb{
  background:linear-gradient(var(--red-dk),var(--red));
  border-radius:4px;border:1px solid var(--bg-deep);
}
::-webkit-scrollbar-thumb:hover{background:var(--red)}

/* ═══════════════════ ANIMATIONS ═══════════════════ */
@keyframes pulse-warn{
  from{opacity:1}to{opacity:.5;transform:scale(1.04)}
}

.app-container.startup-anim{
  animation:startup-flash 1.5s ease-out;
}
@keyframes startup-flash{
  0%{filter:brightness(.5)}
  30%{filter:brightness(1.3)}
  100%{filter:brightness(1)}
}

/* Mode effects */
.app-container.redline-mode{
  box-shadow:0 0 60px var(--red),0 0 120px var(--glow);
  animation:redline-pulse .4s infinite alternate;
}
@keyframes redline-pulse{
  from{box-shadow:0 0 40px var(--red),0 0 80px var(--glow)}
  to{box-shadow:0 0 80px var(--red-lt),0 0 140px var(--glow)}
}
.app-container.racing-mode{
  box-shadow:0 0 40px var(--glow-sm);
}

/* ═══════════════════ CONTEXTUAL TIPS BAR ═══════════════════ */
.tips-bar{
  display:flex;align-items:center;gap:10px;
  padding:8px 14px;
  background:rgba(22,22,28,0.55);
  backdrop-filter:blur(14px) saturate(1.3);
  -webkit-backdrop-filter:blur(14px) saturate(1.3);
  border:0.5px solid rgba(255,255,255,0.08);
  border-radius:var(--radius-sm);
  min-height:34px;
  transition:all 0.4s cubic-bezier(.4,0,.2,1);
  overflow:hidden;
}
.tips-icon{
  flex-shrink:0;
  color:rgba(220,20,60,0.8);
  display:flex;align-items:center;
}
.tips-text{
  font-size:.65rem;
  font-family:'SF Mono','Fira Code',monospace;
  color:rgba(255,255,255,0.7);
  letter-spacing:0.5px;
  line-height:1.4;
  margin:0;
  transition:opacity 0.3s;
}
.tips-text kbd{
  display:inline-block;
  font-size:.55rem;
  padding:1px 5px;
  background:rgba(255,255,255,0.08);
  border:0.5px solid rgba(255,255,255,0.15);
  border-radius:3px;
  color:rgba(255,255,255,0.9);
  margin:0 2px;
  font-family:inherit;
  vertical-align:baseline;
}
.tips-bar.tips-warning{
  border-color:rgba(255,180,0,0.3);
  background:rgba(60,40,0,0.4);
}
.tips-bar.tips-warning .tips-icon{color:rgba(255,180,0,0.9)}
.tips-bar.tips-success{
  border-color:rgba(0,200,80,0.25);
  background:rgba(0,40,20,0.35);
}
.tips-bar.tips-success .tips-icon{color:rgba(0,200,80,0.85)}
.tips-bar.tips-info{
  border-color:rgba(60,130,255,0.25);
  background:rgba(10,20,50,0.4);
}
.tips-bar.tips-info .tips-icon{color:rgba(60,130,255,0.85)}

/* ═══════════════════ FULLSCREEN ═══════════════════ */
:fullscreen{background:#000}
:fullscreen .app-container{
  max-width:100vw;width:100vw;height:100vh;
  margin:0;border-radius:0;border:none;
  display:flex;flex-direction:column;
  overflow-y:auto;overflow-x:hidden;
  scroll-behavior:smooth;
}
:fullscreen .bg-video{border-radius:0}
:fullscreen .app-header{
  border-radius:0;flex-shrink:0;
  padding:8px 20px;
  position:sticky;top:0;z-index:50;
}
:fullscreen .app-header .header-title-group h1{font-size:1.15rem}
:fullscreen .app-header .header-title-group h2{font-size:.55rem;letter-spacing:3px}
:fullscreen .ferrari-badge{width:34px;height:34px}
:fullscreen .telemetry-value{font-size:1.2rem}
:fullscreen .telemetry-label{font-size:.4rem}

/* Dashboard fills remaining space between header & footer */
:fullscreen .dashboard{
  flex:1 1 auto;min-height:0;
  padding:12px 76px 12px 16px;gap:14px;
  grid-template-columns:260px 1fr;
  overflow:visible;
}

/* Left panel: scrollable column */
:fullscreen .panel-left{
  max-height:none;height:100%;overflow-y:auto;gap:10px;
  padding-right:4px;
}
:fullscreen .panel-left .card{padding:12px 14px}
:fullscreen .panel-left .card-title{font-size:.6rem;margin-bottom:6px;padding-bottom:4px}
:fullscreen .tach-card{padding:10px}
:fullscreen .tach-card canvas{max-height:195px}
:fullscreen .param-row{gap:4px}
:fullscreen .param-row label{font-size:.52rem}
:fullscreen .slider-group{gap:6px;padding:8px 10px}
:fullscreen .slider-group output{font-size:.8rem;min-width:50px;padding:3px 6px}
:fullscreen output.big{font-size:1.1rem;min-width:58px}
:fullscreen .state-labels span{font-size:.42rem;padding:1px 3px}
:fullscreen .ignition-ring{width:80px;height:80px}
:fullscreen .btn-ignition{width:68px;height:68px}
:fullscreen .btn-ignition .ignition-icon{width:22px;height:22px}
:fullscreen .ignition-label{font-size:.55rem;letter-spacing:2px}
:fullscreen .ignition-hint{font-size:.48rem}
:fullscreen .master-row label{font-size:.52rem}
:fullscreen .master-row output{font-size:.7rem}
:fullscreen .env-reverb-section h4{font-size:.52rem;margin-bottom:6px}
:fullscreen .env-selector{gap:4px}
:fullscreen .env-btn{padding:5px 3px}
:fullscreen .env-btn span{font-size:.36rem}
:fullscreen .env-btn svg{width:13px;height:13px}
:fullscreen .fx-chain-status h4{font-size:.52rem}
:fullscreen .fx-chain-status li{font-size:.48rem;padding:2px 0 2px 14px}
:fullscreen .fx-chain-status li::before{font-size:.42rem;top:3px}

/* Right panel: fill height, flex column */
:fullscreen .panel-right{
  max-height:none;height:auto;overflow:visible;gap:10px;
  display:flex;flex-direction:column;min-height:0;
}

/* Visualizations: prominent area at top */
:fullscreen .viz-row{gap:10px;flex-shrink:0}
:fullscreen .viz-panel{padding:10px 12px}
:fullscreen .viz-title{font-size:.48rem;margin-bottom:6px}
:fullscreen #spectrum-canvas,:fullscreen #waveform-canvas{height:90px}

/* Tips bar */
:fullscreen .tips-bar{padding:6px 12px;min-height:28px}
:fullscreen .tips-text{font-size:.58rem}
:fullscreen .tips-text kbd{font-size:.5rem;padding:1px 4px}

/* Sound layers: fill rest of right panel */
:fullscreen .layers-section{
  flex:1 1 auto;min-height:0;
  display:flex;flex-direction:column;
  overflow:visible;
}
:fullscreen .layers-header{padding:10px 14px 8px}
:fullscreen .layers-header .card-title{font-size:.65rem}
:fullscreen .active-count{font-size:.55rem}
:fullscreen .layers-grid{
  flex:1 1 auto;overflow:visible;
  max-height:none;padding:10px;gap:10px;
  grid-template-columns:repeat(auto-fill,minmax(220px,1fr));
}
:fullscreen .sound-layer{padding:10px 12px;border-radius:14px}
:fullscreen .layer-head{margin-bottom:8px;padding-bottom:6px}
:fullscreen .layer-head h4{font-size:.58rem}
:fullscreen .layer-vol{font-size:.5rem;padding:2px 6px}
:fullscreen .instr-card{padding:6px 8px;border-radius:8px}
:fullscreen .instr-name{font-size:.52rem}
:fullscreen .instr-status{font-size:.45rem}
:fullscreen .instr-meters{font-size:.5rem;gap:6px;margin-bottom:6px}
:fullscreen .meter-lbl,:fullscreen .meter-val{font-size:.46rem}
:fullscreen .meter-val{min-width:44px}
:fullscreen .instr-bar-wrap{height:3px}
:fullscreen .instr-list{gap:5px}
:fullscreen .multi-tag{font-size:.42rem}

/* Footer: sticky at bottom */
:fullscreen .app-footer{
  padding:5px 16px;flex-shrink:0;
  border-top:1px solid rgba(220,20,60,0.2);
  position:sticky;bottom:0;z-index:50;
  background:rgba(18,18,20,0.85);
  backdrop-filter:blur(10px) saturate(1.3);
  -webkit-backdrop-filter:blur(10px) saturate(1.3);
}
:fullscreen .keyboard-hints{gap:6px;flex-wrap:wrap}
:fullscreen .keyboard-hints span{font-size:.5rem}
:fullscreen kbd{font-size:.45rem;padding:1px 4px;min-width:14px}
:fullscreen .footer-cta{font-size:.58rem}
:fullscreen .copyright{font-size:.5rem}

/* ═══════════════════ FLOATING QUICK-ACTION HUD ═══════════════════ */
.fs-hud{
  display:none;
}
:fullscreen .fs-hud{
  display:block;
  position:fixed;
  right:16px;
  top:50%;
  transform:translateY(-50%);
  z-index:200;
  pointer-events:auto;
}
:fullscreen .fs-hud-inner{
  display:flex;flex-direction:column;align-items:center;gap:4px;
  padding:8px 6px;
  background:rgba(22,22,26,0.72);
  backdrop-filter:blur(18px) saturate(1.4);
  -webkit-backdrop-filter:blur(18px) saturate(1.4);
  border:0.5px solid rgba(255,255,255,0.12);
  border-radius:20px;
  box-shadow:0 4px 24px rgba(0,0,0,0.4),inset 0 0.5px 0 rgba(255,255,255,0.06);
}
:fullscreen .fs-hud-nav,
:fullscreen .fs-hud-actions{
  display:flex;flex-direction:column;gap:2px;
}
:fullscreen .fs-hud-divider{
  width:24px;height:0.5px;
  background:rgba(255,255,255,0.1);
  margin:4px 0;
}
:fullscreen .fs-hud-btn{
  display:flex;flex-direction:column;align-items:center;gap:2px;
  background:rgba(255,255,255,0.04);
  border:0.5px solid rgba(255,255,255,0.08);
  border-radius:12px;
  padding:8px 10px 6px;
  cursor:pointer;
  color:rgba(255,255,255,0.55);
  transition:all 0.2s ease;
  min-width:52px;
}
:fullscreen .fs-hud-btn span{
  font-size:.38rem;
  font-weight:600;
  letter-spacing:1.5px;
  text-transform:uppercase;
  font-family:'SF Mono','Fira Code',monospace;
}
:fullscreen .fs-hud-btn svg{
  opacity:0.7;transition:opacity 0.2s;
}
:fullscreen .fs-hud-btn:hover{
  background:rgba(220,20,60,0.15);
  border-color:rgba(220,20,60,0.35);
  color:rgba(255,255,255,0.9);
}
:fullscreen .fs-hud-btn:hover svg{opacity:1}
:fullscreen .fs-hud-btn:active{
  transform:scale(0.92);
  background:rgba(220,20,60,0.25);
}
:fullscreen .fs-hud-btn.fs-hud-active{
  background:rgba(220,20,60,0.2);
  border-color:rgba(220,20,60,0.4);
  color:#fff;
  box-shadow:0 0 8px rgba(220,20,60,0.3);
}
:fullscreen .fs-hud-btn.fs-hud-active svg{opacity:1}

/* Hide HUD on narrow viewports & collapse fullscreen grid */
@media(max-width:1100px){
  :fullscreen .dashboard{
    grid-template-columns:1fr;
    padding:10px 68px 10px 14px;
  }
  :fullscreen .panel-left{
    display:grid;grid-template-columns:auto 1fr;gap:10px;
  }
  :fullscreen .tach-card{grid-column:1/-1}
}
@media(max-width:700px){
  :fullscreen .fs-hud{display:none}
  :fullscreen .dashboard{
    grid-template-columns:1fr;
    padding:8px 10px;gap:10px;
  }
  :fullscreen .panel-left{
    display:flex;flex-direction:column;gap:8px;
  }
}

#fullscreen-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(44,44,50,0.50);
  backdrop-filter:blur(12px) saturate(1.3);
  -webkit-backdrop-filter:blur(12px) saturate(1.3);
  border:0.5px solid rgba(255,255,255,0.14);
  color:var(--text-2);border-radius:50%;
  width:36px;height:36px;
  cursor:pointer;transition:all var(--med);
  box-shadow:0 2px 8px rgba(0,0,0,0.18),inset 0 0.5px 0 rgba(255,255,255,0.08);
  position:relative;
}
#fullscreen-toggle::after{
  content:'';position:absolute;inset:0;border-radius:inherit;
  background:linear-gradient(175deg,rgba(255,255,255,0.06) 0%,transparent 50%);
  pointer-events:none;
}
#fullscreen-toggle:hover{
  color:#fff;background:rgba(220,20,60,0.45);
  border-color:rgba(220,20,60,0.35);
  box-shadow:0 4px 16px rgba(220,20,60,0.25),0 0 20px rgba(220,20,60,0.12),
    inset 0 0.5px 0 rgba(255,255,255,0.12);
  transform:scale(1.08);
}
#fullscreen-toggle:active{transform:scale(0.95)}

/* ═══════════════════ RESPONSIVE ═══════════════════ */
@media(max-width:1100px){
  .dashboard{grid-template-columns:1fr;gap:16px}
  .panel-left{
    max-height:none;overflow:visible;
    display:grid;grid-template-columns:1fr 1fr;gap:12px;
  }
  .panel-right{max-height:none;overflow:visible}
  .tach-card{grid-column:1/-1}
  .viz-row{grid-template-columns:1fr}
  .tips-bar{padding:6px 10px}
  .tips-text{font-size:.6rem}
  .layers-grid{max-height:none;overflow:visible}
  .layers-section{overflow:visible}
}
@media(max-width:700px){
  html{font-size:14px}

  /* Header */
  .app-header{
    padding:10px 12px;gap:8px;
    flex-direction:column;align-items:stretch;
  }
  .header-left{gap:10px}
  .header-title-group h1{font-size:.95rem;letter-spacing:1px}
  .header-title-group h2{font-size:.5rem;letter-spacing:2px}
  .ferrari-badge{width:36px;height:36px}
  .help-toggle{width:30px;height:30px;margin-right:4px}

  /* Telemetry */
  .header-center{justify-content:flex-start}
  .header-telemetry{
    flex-wrap:wrap;width:100%;
    border-radius:var(--radius-sm);
  }
  .telemetry-item{
    min-width:0;flex:1 1 auto;padding:4px 8px;
  }
  .telemetry-label{font-size:.45rem}
  .telemetry-value{font-size:.9rem}
  .gear-value{font-size:1.15rem}
  .speed-value{font-size:1rem}

  /* Status + VU */
  .header-right{justify-content:space-between;width:100%}
  .system-status{padding:6px 10px;flex:1}
  .status-text{font-size:.6rem}
  .audio-meter-mini{width:60px;height:6px}

  /* Dashboard */
  .dashboard{padding:10px;gap:12px}
  .panel-left{
    grid-template-columns:1fr;
    gap:10px;
  }
  .panel-right{gap:10px}

  /* Tach */
  #tach-canvas{width:200px;height:200px}
  .tach-card{padding:12px}
  .sled{width:12px;height:12px}

  /* Cards */
  .card{padding:14px}
  .card-title{font-size:.7rem;margin-bottom:12px}

  /* Params */
  .param-row label{font-size:.6rem}
  .slider-group{padding:8px 10px;gap:8px}
  output{font-size:.75rem;padding:4px 8px;min-width:44px}
  output.big{font-size:1.1rem;min-width:56px}
  .state-labels{font-size:.5rem}

  /* Button */
  .ignition-ring{width:90px;height:90px}
  .btn-ignition{width:76px;height:76px}
  .btn-ignition .ignition-icon{width:26px;height:26px}
  .ignition-label{font-size:.6rem;letter-spacing:2px}

  /* Environment Selector */
  .env-selector{grid-template-columns:repeat(5,1fr);gap:4px}
  .env-btn{padding:6px 2px}
  .env-btn span{font-size:.38rem}
  .env-btn svg{width:13px;height:13px}

  /* Viz */
  .viz-row{grid-template-columns:1fr;gap:8px}
  .viz-panel{padding:10px}
  .viz-title{font-size:.55rem}
  #spectrum-canvas,#waveform-canvas{height:70px}

  /* Tips */
  .tips-bar{padding:6px 10px;gap:8px}
  .tips-icon svg{width:12px;height:12px}
  .tips-text{font-size:.58rem}
  .tips-text kbd{font-size:.5rem;padding:1px 3px}

  /* Layers */
  .layers-section{overflow:visible}
  .layers-header{padding:12px 14px 10px}
  .layers-header .card-title{font-size:.7rem}
  .active-count{font-size:.55rem}
  .layers-grid{
    grid-template-columns:1fr;
    gap:10px;padding:12px;
    max-height:none;overflow:visible;
  }
  .sound-layer{padding:12px}
  .layer-head h4{font-size:.65rem}
  .layer-vol{font-size:.55rem;padding:2px 6px}
  .instr-card{padding:8px 10px}
  .instr-name{font-size:.65rem}
  .instr-status{font-size:.5rem}
  .instr-meters{font-size:.55rem;gap:6px}
  .meter-val{min-width:42px}
  .instr-bar-wrap{height:4px}

  /* Footer */
  .app-footer{
    padding:10px 12px;
    flex-direction:column;align-items:center;
    text-align:center;gap:6px;
  }
  .keyboard-hints{display:none}
  .footer-center{align-items:center}
  .footer-cta{font-size:.6rem}
  .copyright{font-size:.55rem}

  /* Popup */
  .popup-box{
    padding:24px 20px 20px;
    border-radius:12px;
    width:95%;max-height:88vh;
  }
  .popup-header h2{font-size:1.15rem}
  .popup-header svg{width:44px;height:44px}
  .popup-subtitle{font-size:.65rem;letter-spacing:2px}
  .author-name{font-size:1rem}
  .popup-guide h3{font-size:.72rem}
  .popup-guide ol li{font-size:.72rem;padding-left:26px}
  .popup-keys{gap:6px;padding:8px}
  .popup-keys span{font-size:.58rem}
  .popup-tip{font-size:.65rem}
  .popup-cta{padding:10px 12px}
  .popup-cta p{font-size:.7rem}
  .popup-start{padding:12px;font-size:.8rem;letter-spacing:2px}
}

/* Extra small (< 400px) */
@media(max-width:400px){
  html{font-size:13px}
  .header-title-group h1{font-size:.85rem}
  .telemetry-item{padding:3px 6px}
  .telemetry-value{font-size:.8rem}
  .gear-value{font-size:1rem}
  #tach-canvas{width:170px;height:170px}
  output.big{font-size:.95rem;min-width:48px}
  .popup-box{padding:18px 14px 16px;width:97%}
}