/* ==========================================================================
   BOLT ARMY — Design System v1.0
   Base: Verglas (exotic-rally) dark theme · Inspiração: Fielder Golf + Kyiv Spring Run
   ========================================================================== */

/* ---------- 1. TOKENS ---------- */
:root {
  /* surfaces */
  --ba-void: #0E1A2E;
  --ba-carbon: #16243B;
  --ba-graphite: #22324F;
  --ba-navy: #0E1F3A;
  --ba-navy-deep: #081326;
  --ba-navy-soft: #1A2F52;
  /* brand */
  --ba-bolt: #B4F03C;
  --ba-bolt-hi: #C8F76A;
  --ba-bolt-lo: #8BC21A;
  --ba-bolt-rgb: 180, 240, 60;
  --ba-white: #FFFFFF;
  /* neutrals */
  --ba-fog: #CAD3E2;
  --ba-mist: #A3B0C6;
  --ba-ash: #8492AC;
  --ba-smoke: #5F6D88;
  --ba-line: rgba(255, 255, 255, 0.10);
  --ba-line-soft: rgba(255, 255, 255, 0.05);
  /* feedback */
  --ba-success: #4ADE80;
  --ba-warning: #F5B841;
  --ba-danger: #E63946;
  --ba-info: #3B82F6;
  /* type */
  --ba-font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --ba-font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --ba-font-impact: 'Anton', 'Space Grotesk', Impact, sans-serif;
  --ba-font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  /* motion */
  --ba-ease-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ba-ease-power4: cubic-bezier(0.76, 0, 0.24, 1);
  --ba-dur-fast: 200ms;
  --ba-dur-base: 300ms;
  --ba-dur-slow: 700ms;
  /* glow */
  --ba-glow-sm: 0 0 8px rgba(var(--ba-bolt-rgb), 0.9);
  --ba-glow-md: 0 0 24px rgba(var(--ba-bolt-rgb), 0.35), 0 0 2px rgba(var(--ba-bolt-rgb), 0.9);
  --ba-glow-lg: 0 10px 60px -10px rgba(var(--ba-bolt-rgb), 0.55);
}

/* reserve the scrollbar space even while the preloader locks scrolling,
   so the layout does not shift left when the scrollbar comes back */
html { scroll-behavior: auto; scrollbar-gutter: stable; background: var(--ba-void); }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-stopped { overflow: hidden; }

::selection { background: var(--ba-bolt); color: var(--ba-void); }

/* scrollbar (Kyiv) re-tinted */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--ba-void); }
::-webkit-scrollbar-thumb { background: var(--ba-navy-soft); border-radius: 0; }
::-webkit-scrollbar-thumb:hover { background: var(--ba-bolt); }

/* ---------- 2. ATMOSPHERE / BACKGROUNDS ---------- */

/* film grain — inherited from Verglas */
.ba-noise {
  position: fixed; inset: 0; pointer-events: none; z-index: 9999; opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* aurora blobs — slow drifting brand light */
.ba-aurora { position: absolute; inset: 0; overflow: hidden; pointer-events: none; z-index: 0; }
/* perf: no filter here. A blur on a moving layer is re-run by the GPU every frame;
   the multi-stop radial gradient gives the same soft falloff for free. */
.ba-aurora__blob {
  position: absolute; border-radius: 9999px; opacity: 0.45;
  will-change: transform; animation: ba-drift 22s ease-in-out infinite alternate;
}
.ba-aurora__blob--bolt { background: radial-gradient(circle, rgba(var(--ba-bolt-rgb), 0.75) 0%, rgba(var(--ba-bolt-rgb), 0.42) 25%, rgba(var(--ba-bolt-rgb), 0.16) 48%, rgba(var(--ba-bolt-rgb), 0.04) 62%, transparent 71%); }
.ba-aurora__blob--navy { background: radial-gradient(circle, rgba(26, 47, 82, 0.95) 0%, rgba(26, 47, 82, 0.45) 35%, rgba(26, 47, 82, 0.12) 55%, transparent 70%); animation-duration: 28s; animation-delay: -6s; }
.ba-aurora__blob--info { background: radial-gradient(circle, rgba(59, 130, 246, 0.32) 0%, rgba(59, 130, 246, 0.14) 32%, rgba(59, 130, 246, 0.04) 55%, transparent 70%); animation-duration: 34s; animation-delay: -12s; }

@keyframes ba-drift {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  33% { transform: translate3d(8%, -6%, 0) scale(1.12); }
  66% { transform: translate3d(-6%, 8%, 0) scale(0.92); }
  100% { transform: translate3d(4%, 4%, 0) scale(1.05); }
}

/* blueprint grid — Verglas "philosophy" grid, masked. Static on purpose:
   animating background-position repaints the whole layer every frame. */
.ba-grid {
  position: absolute; inset: 0; pointer-events: none; z-index: 0; opacity: 0.5;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 20%, transparent 75%);
          mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 20%, transparent 75%);
}

/* falling light beams — echo of the bolt's stripes */
.ba-beams { position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: 0; }
.ba-beams span {
  position: absolute; top: -40%; width: 1px; height: 40%;
  background: linear-gradient(to bottom, transparent, rgba(var(--ba-bolt-rgb), 0.7), transparent);
  animation: ba-beam 7s linear infinite; opacity: 0.6;
}
.ba-beams span:nth-child(1) { left: 12%; animation-delay: 0s; }
.ba-beams span:nth-child(2) { left: 31%; animation-delay: -2.4s; animation-duration: 9s; }
.ba-beams span:nth-child(3) { left: 54%; animation-delay: -4.1s; }
.ba-beams span:nth-child(4) { left: 73%; animation-delay: -1.2s; animation-duration: 11s; }
.ba-beams span:nth-child(5) { left: 91%; animation-delay: -5.6s; animation-duration: 8s; }
@keyframes ba-beam { to { transform: translateY(360%); } }

/* horizontal speed stripes (bolt signature) */
/* perf: the stripes are horizontal, so sliding the masked layer sideways looks identical to
   sweeping the mask, but runs on the GPU with no repaint. */
.ba-stripes { position: absolute; inset: 0; pointer-events: none; z-index: 0; opacity: 0.35; overflow: hidden; }
.ba-stripes::before {
  content: ''; position: absolute; top: 0; bottom: 0; left: 0; width: 250%;
  background: repeating-linear-gradient(to bottom, transparent 0 14px, rgba(var(--ba-bolt-rgb), 0.08) 14px 16px);
  -webkit-mask-image: linear-gradient(100deg, transparent 10%, #000 50%, transparent 90%);
          mask-image: linear-gradient(100deg, transparent 10%, #000 50%, transparent 90%);
  will-change: transform; animation: ba-stripe-sweep 9s ease-in-out infinite;
}
@keyframes ba-stripe-sweep { 0% { transform: translate3d(2%, 0, 0); } 100% { transform: translate3d(-62%, 0, 0); } }

/* cursor spotlight — follows --mx/--my set by JS */
.ba-spotlight {
  position: absolute; inset: 0; pointer-events: none; z-index: 1;
  background: radial-gradient(600px circle at var(--mx, 50%) var(--my, 50%), rgba(var(--ba-bolt-rgb), 0.10), transparent 45%);
  transition: background 0.15s linear;
}

/* conic halo used behind brand marks */
.ba-halo {
  position: absolute; border-radius: 9999px; pointer-events: none;
  background: conic-gradient(from 0deg, transparent 0deg, rgba(var(--ba-bolt-rgb), 0.55) 60deg, transparent 120deg, rgba(26, 47, 82, 0.9) 220deg, transparent 300deg);
  filter: blur(40px); /* static on purpose: rotating a blurred layer re-runs the blur every frame */
}
@keyframes ba-spin { to { transform: rotate(360deg); } }

/* section seam — glowing hairline on top of a section */
.ba-seam { position: absolute; left: 0; right: 0; top: 0; height: 1px; pointer-events: none; overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 30%, #000 70%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 30%, #000 70%, transparent); }
.ba-seam::before { content: ''; position: absolute; top: 0; bottom: 0; left: 0; width: 50%;
  background: linear-gradient(90deg, transparent, rgba(var(--ba-bolt-rgb), 0.6), transparent);
  will-change: transform; animation: ba-seam 6s ease-in-out infinite; }
@keyframes ba-seam { 0% { transform: translate3d(-50%, 0, 0); } 100% { transform: translate3d(150%, 0, 0); } }

/* ---------- 3. TYPE HELPERS ---------- */
.ba-outline { color: transparent; -webkit-text-stroke: 1px rgba(255, 255, 255, 0.35); }
.ba-outline--bolt { color: transparent; -webkit-text-stroke: 1.5px var(--ba-bolt); }
.ba-gradient-text {
  background: linear-gradient(100deg, #fff 0%, var(--ba-bolt-hi) 40%, var(--ba-bolt) 60%, #fff 100%);
  background-size: 200% auto; -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: ba-shine-text 6s linear infinite;
}
@keyframes ba-shine-text { to { background-position: -200% center; } }

/* fill-on-load: outline word that floods with lime (clip-path wipe) */
.ba-fill { position: relative; display: inline-block; }
.ba-fill__solid { position: absolute; inset: 0; color: var(--ba-bolt); clip-path: inset(-40% 100% -40% -10%); }

/* ---------- 4. COMPONENTS ---------- */

/* Button — primary (lime, glow, shine sweep) */
.ba-btn {
  --btn-pad-y: 0.95rem; --btn-pad-x: 1.75rem;
  position: relative; isolation: isolate; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem;
  padding: var(--btn-pad-y) var(--btn-pad-x);
  font-family: var(--ba-font-body); font-weight: 500; font-size: 0.75rem;
  letter-spacing: 0.18em; text-transform: uppercase; line-height: 1;
  border-radius: 9999px; cursor: pointer; white-space: nowrap;
  transition: transform var(--ba-dur-base) var(--ba-ease-expo), box-shadow var(--ba-dur-base) ease,
              background-color var(--ba-dur-base) ease, color var(--ba-dur-base) ease, border-color var(--ba-dur-base) ease;
}
.ba-btn:focus-visible { outline: 2px solid var(--ba-bolt); outline-offset: 4px; }
.ba-btn:active { transform: scale(0.96); }
.ba-btn .ba-btn__icon { transition: transform var(--ba-dur-base) var(--ba-ease-expo); }
.ba-btn:hover .ba-btn__icon { transform: translateX(4px) rotate(-45deg); }

.ba-btn--primary { background: var(--ba-bolt); color: var(--ba-void); box-shadow: 0 0 0 0 rgba(var(--ba-bolt-rgb), 0); }
.ba-btn--primary::before { /* shine sweep */
  content: ''; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(110deg, transparent 30%, rgba(255, 255, 255, 0.75) 50%, transparent 70%);
  transform: translateX(-120%); transition: transform 0.9s var(--ba-ease-expo);
}
.ba-btn--primary:hover { background: var(--ba-bolt-hi); box-shadow: var(--ba-glow-lg); transform: translateY(-2px); }
.ba-btn--primary:hover::before { transform: translateX(120%); }
.ba-btn--primary:active { background: var(--ba-bolt-lo); }

/* idle shimmer for hero CTAs */
.ba-btn--shimmer::after {
  content: ''; position: absolute; top: 0; bottom: 0; left: 0; width: 75%; z-index: -1; pointer-events: none;
  background: linear-gradient(110deg, transparent 0%, rgba(255, 255, 255, 0.55) 50%, transparent 100%);
  will-change: transform; animation: ba-shimmer 3.6s ease-in-out infinite;
}
@keyframes ba-shimmer { 0%, 60% { transform: translate3d(-183%, 0, 0); } 100% { transform: translate3d(217%, 0, 0); } }

/* Button — secondary (glass outline, golf pill) */
.ba-btn--secondary { color: #fff; border: 1px solid rgba(255, 255, 255, 0.3); background: rgba(255, 255, 255, 0.02); backdrop-filter: blur(8px); }
.ba-btn--secondary::before {
  content: ''; position: absolute; inset: 0; z-index: -1; background: #fff; border-radius: inherit;
  transform: translateY(101%); transition: transform 0.5s var(--ba-ease-expo);
}
.ba-btn--secondary:hover { color: var(--ba-void); border-color: #fff; }
.ba-btn--secondary:hover::before { transform: translateY(0); }

/* Button — navy */
.ba-btn--navy { background: var(--ba-navy); color: #fff; border: 1px solid rgba(var(--ba-bolt-rgb), 0.25); }
.ba-btn--navy:hover { border-color: var(--ba-bolt); box-shadow: var(--ba-glow-md); color: var(--ba-bolt); }

/* Button — ghost link (golf underline + arrow) */
.ba-link {
  position: relative; display: inline-flex; align-items: center; gap: 0.6rem; padding-bottom: 0.35rem;
  font-size: 0.75rem; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: #fff;
}
.ba-link::after {
  content: ''; position: absolute; left: 0; bottom: 0; height: 1px; width: 100%; background: rgba(255, 255, 255, 0.3);
}
.ba-link::before {
  content: ''; position: absolute; left: 0; bottom: 0; height: 1px; width: 0; background: var(--ba-bolt); z-index: 1;
  box-shadow: var(--ba-glow-sm); transition: width var(--ba-dur-slow) var(--ba-ease-expo);
}
.ba-link:hover { color: var(--ba-bolt); }
.ba-link:hover::before { width: 100%; }
.ba-link .ba-btn__icon { transition: transform var(--ba-dur-base) var(--ba-ease-expo); }
.ba-link:hover .ba-btn__icon { transform: translateX(4px); }

/* Button — disabled + loading */
.ba-btn[disabled], .ba-btn.is-disabled { opacity: 0.35; cursor: not-allowed; box-shadow: none !important; transform: none !important; filter: grayscale(0.6); }
.ba-btn[disabled]::before, .ba-btn[disabled]::after { display: none; }
.ba-btn.is-loading { pointer-events: none; color: transparent !important; }
.ba-btn.is-loading::after {
  content: ''; position: absolute; width: 16px; height: 16px; inset: 0; margin: auto; z-index: 2;
  border: 2px solid currentColor; border-color: var(--ba-void) transparent var(--ba-void) transparent;
  border-radius: 9999px; animation: ba-spin 0.8s linear infinite; background: none;
}
.ba-btn--sm { --btn-pad-y: 0.65rem; --btn-pad-x: 1.15rem; font-size: 0.625rem; }
.ba-btn--lg { --btn-pad-y: 1.2rem; --btn-pad-x: 2.4rem; font-size: 0.8125rem; }

/* icon button */
.ba-icon-btn {
  width: 44px; height: 44px; border-radius: 9999px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--ba-line); color: #fff; background: rgba(255, 255, 255, 0.02);
  transition: all var(--ba-dur-base) var(--ba-ease-expo);
}
.ba-icon-btn:hover { border-color: var(--ba-bolt); color: var(--ba-bolt); box-shadow: var(--ba-glow-md); transform: rotate(-8deg) scale(1.06); }
.ba-icon-btn:focus-visible { outline: 2px solid var(--ba-bolt); outline-offset: 3px; }

/* Circular CTA (Verglas "Aperte para começar") + rotating ring */
.ba-orb { position: relative; display: flex; align-items: center; justify-content: center; border-radius: 9999px; }
.ba-orb__ring { position: absolute; inset: -18px; animation: ba-spin 18s linear infinite; pointer-events: none; }
.ba-orb__ring text { font-family: var(--ba-font-mono); font-size: 7.4px; letter-spacing: 3.2px; fill: rgba(255, 255, 255, 0.55); text-transform: uppercase; }
.ba-orb:hover .ba-orb__ring { animation-duration: 5s; }
.ba-orb__pulse { position: absolute; inset: 0; border-radius: 9999px; border: 1px solid rgba(var(--ba-bolt-rgb), 0.5); animation: ba-ping 2.8s var(--ba-ease-expo) infinite; pointer-events: none; }
@keyframes ba-ping { 0% { transform: scale(1); opacity: 0.8; } 100% { transform: scale(1.55); opacity: 0; } }

/* Inputs */
.ba-field { position: relative; display: flex; flex-direction: column; gap: 0.5rem; }
.ba-label { font-size: 0.6875rem; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ba-mist); }
.ba-input {
  width: 100%; background: rgba(255, 255, 255, 0.03); color: #fff;
  border: 1px solid var(--ba-line); border-radius: 0.75rem; padding: 0.95rem 1rem;
  font: 400 0.9375rem/1.4 var(--ba-font-body);
  transition: border-color var(--ba-dur-base) ease, box-shadow var(--ba-dur-base) ease, background var(--ba-dur-base) ease;
}
.ba-input::placeholder { color: var(--ba-ash); }
.ba-input:hover { border-color: rgba(255, 255, 255, 0.22); }
.ba-input:focus { outline: none; border-color: var(--ba-bolt); background: rgba(var(--ba-bolt-rgb), 0.04); box-shadow: 0 0 0 4px rgba(var(--ba-bolt-rgb), 0.12), 0 0 30px -8px rgba(var(--ba-bolt-rgb), 0.5); }
.ba-input.has-icon { padding-left: 2.75rem; }
.ba-input-icon { position: absolute; left: 1rem; bottom: 0.95rem; width: 18px; height: 18px; color: var(--ba-ash); pointer-events: none; transition: color var(--ba-dur-base); }
.ba-field:focus-within .ba-input-icon { color: var(--ba-bolt); }
.ba-field:focus-within .ba-label { color: var(--ba-bolt); }
.ba-input.is-error { border-color: var(--ba-danger); box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.12); animation: ba-shake 0.4s; }
.ba-input.is-success { border-color: var(--ba-success); }
.ba-input:disabled { opacity: 0.4; cursor: not-allowed; }
.ba-helper { font-size: 0.75rem; color: var(--ba-ash); }
.ba-helper.is-error { color: var(--ba-danger); }
@keyframes ba-shake { 20%, 60% { transform: translateX(-4px); } 40%, 80% { transform: translateX(4px); } }

/* underline input (editorial) */
.ba-input--line { border: 0; border-bottom: 1px solid var(--ba-line); border-radius: 0; background: transparent; padding-left: 0; }
.ba-input--line:focus { box-shadow: 0 1px 0 0 var(--ba-bolt); background: transparent; }

/* toggle */
.ba-toggle { position: relative; width: 48px; height: 26px; flex-shrink: 0; }
.ba-toggle input { position: absolute; opacity: 0; inset: 0; cursor: pointer; z-index: 2; margin: 0; }
.ba-toggle__track { position: absolute; inset: 0; border-radius: 9999px; background: rgba(255, 255, 255, 0.08); border: 1px solid var(--ba-line); transition: all var(--ba-dur-base); }
.ba-toggle__thumb { position: absolute; top: 4px; left: 4px; width: 18px; height: 18px; border-radius: 9999px; background: var(--ba-mist); transition: all var(--ba-dur-base) var(--ba-ease-expo); }
.ba-toggle input:checked ~ .ba-toggle__track { background: rgba(var(--ba-bolt-rgb), 0.18); border-color: var(--ba-bolt); }
.ba-toggle input:checked ~ .ba-toggle__thumb { left: 26px; background: var(--ba-bolt); box-shadow: var(--ba-glow-sm); }
.ba-toggle input:focus-visible ~ .ba-toggle__track { outline: 2px solid var(--ba-bolt); outline-offset: 3px; }

/* checkbox */
.ba-check { display: inline-flex; align-items: center; gap: 0.75rem; cursor: pointer; font-size: 0.875rem; color: var(--ba-fog); }
.ba-check input { appearance: none; width: 18px; height: 18px; border: 1px solid rgba(255, 255, 255, 0.3); border-radius: 4px; display: grid; place-content: center; transition: all var(--ba-dur-fast); margin: 0; }
.ba-check input::after { content: ''; width: 10px; height: 10px; clip-path: polygon(14% 44%, 0 65%, 50% 100%, 100% 16%, 80% 0%, 43% 62%); background: var(--ba-void); transform: scale(0); transition: transform var(--ba-dur-fast) var(--ba-ease-expo); }
.ba-check input:checked { background: var(--ba-bolt); border-color: var(--ba-bolt); box-shadow: var(--ba-glow-sm); }
.ba-check input:checked::after { transform: scale(1); }
.ba-check input:focus-visible { outline: 2px solid var(--ba-bolt); outline-offset: 3px; }

/* Cards */
.ba-card {
  position: relative; overflow: hidden; border-radius: 1rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.01));
  border: 1px solid var(--ba-line); transition: border-color 0.5s ease, transform 0.6s var(--ba-ease-expo), box-shadow 0.6s ease;
}
.ba-card:hover { border-color: rgba(255, 255, 255, 0.25); }
/* glow border that follows the cursor (set --cx/--cy) */
.ba-card--glow::before {
  content: ''; position: absolute; inset: 0; border-radius: inherit; padding: 1px; pointer-events: none;
  background: radial-gradient(320px circle at var(--cx, 50%) var(--cy, 0%), rgba(var(--ba-bolt-rgb), 0.85), transparent 45%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor;
          mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
  opacity: 0; transition: opacity 0.4s ease;
}
.ba-card--glow::after {
  content: ''; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(420px circle at var(--cx, 50%) var(--cy, 0%), rgba(var(--ba-bolt-rgb), 0.07), transparent 50%);
  opacity: 0; transition: opacity 0.4s ease;
}
.ba-card--glow:hover::before, .ba-card--glow:hover::after { opacity: 1; }
.ba-card__bar { position: absolute; left: 0; bottom: 0; height: 2px; width: 0; background: var(--ba-bolt); box-shadow: var(--ba-glow-sm); transition: width var(--ba-dur-slow) var(--ba-ease-expo); }
.group\/card:hover .ba-card__bar, .ba-card:hover .ba-card__bar { width: 100%; }

/* featured tier card — rotating conic border */
.ba-card--featured { border-color: transparent; background: var(--ba-carbon); }
.ba-card--featured > .ba-card__border {
  position: absolute; inset: -60%; z-index: 0; pointer-events: none;
  background: conic-gradient(from 0deg, transparent 0 70%, var(--ba-bolt) 85%, transparent 100%);
  animation: ba-spin 6s linear infinite;
}
.ba-card--featured > .ba-card__inner { position: relative; z-index: 1; margin: 1px; border-radius: calc(1rem - 1px); background: linear-gradient(180deg, #22324F 0%, var(--ba-carbon) 70%); height: calc(100% - 2px); }

/* tilt card (3D) */
.ba-tilt { transform-style: preserve-3d; transition: transform 0.5s var(--ba-ease-expo); will-change: transform; }
.ba-tilt__layer { transform: translateZ(40px); }

/* Badges */
.ba-badge {
  display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.375rem 0.875rem; border-radius: 9999px;
  font-size: 0.625rem; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; line-height: 1; white-space: nowrap;
  border: 1px solid var(--ba-line); background: rgba(255, 255, 255, 0.04); color: var(--ba-fog); backdrop-filter: blur(8px);
}
.ba-badge__dot { width: 6px; height: 6px; border-radius: 9999px; background: var(--ba-bolt); box-shadow: var(--ba-glow-sm); animation: ba-pulse-dot 2s ease-in-out infinite; }
@keyframes ba-pulse-dot { 50% { opacity: 0.35; transform: scale(0.7); } }
.ba-badge--bolt { background: var(--ba-bolt); color: var(--ba-void); border-color: var(--ba-bolt); }
.ba-badge--outline { background: rgba(var(--ba-bolt-rgb), 0.08); color: var(--ba-bolt); border-color: rgba(var(--ba-bolt-rgb), 0.35); }
.ba-badge--navy { background: var(--ba-navy); color: #fff; border-color: var(--ba-navy-soft); }
.ba-badge--tag { border-radius: 0; font-family: var(--ba-font-mono); letter-spacing: 0.14em; color: var(--ba-bolt); border-color: rgba(var(--ba-bolt-rgb), 0.3); background: rgba(var(--ba-bolt-rgb), 0.1); }
.ba-badge--success { color: var(--ba-success); border-color: rgba(74, 222, 128, 0.35); background: rgba(74, 222, 128, 0.08); }
.ba-badge--warning { color: var(--ba-warning); border-color: rgba(245, 184, 65, 0.35); background: rgba(245, 184, 65, 0.08); }
.ba-badge--danger { color: #FF6B76; border-color: rgba(230, 57, 70, 0.4); background: rgba(230, 57, 70, 0.1); }
.ba-badge--info { color: #7FB0FF; border-color: rgba(59, 130, 246, 0.4); background: rgba(59, 130, 246, 0.1); }

/* Tooltip */
.ba-tip { position: relative; display: inline-flex; }
.ba-tip__bubble {
  position: absolute; left: 50%; bottom: calc(100% + 12px); min-width: 170px; max-width: 240px; z-index: 30;
  padding: 0.75rem 0.875rem; border-radius: 0.375rem; text-align: left;
  background: var(--ba-void); border: 1px solid var(--ba-line); box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  opacity: 0; pointer-events: none; transform: translate(-50%, 6px) scale(0.95); transform-origin: bottom center;
  transition: opacity var(--ba-dur-fast) ease, transform var(--ba-dur-base) var(--ba-ease-expo);
}
.ba-tip__bubble::after { content: ''; position: absolute; left: 50%; top: 100%; width: 8px; height: 8px; background: var(--ba-void); border-right: 1px solid var(--ba-line); border-bottom: 1px solid var(--ba-line); transform: translate(-50%, -4px) rotate(45deg); }
.ba-tip:hover .ba-tip__bubble, .ba-tip:focus-within .ba-tip__bubble { opacity: 1; transform: translate(-50%, 0) scale(1); }
.ba-tip--right .ba-tip__bubble { left: calc(100% + 12px); bottom: auto; top: 50%; transform: translate(6px, -50%) scale(0.95); transform-origin: left center; }
.ba-tip--right:hover .ba-tip__bubble, .ba-tip--right:focus-within .ba-tip__bubble { transform: translate(0, -50%) scale(1); }
.ba-tip--right .ba-tip__bubble::after { left: 0; top: 50%; transform: translate(-4px, -50%) rotate(135deg); }

/* Modal */
.ba-modal { position: fixed; inset: 0; z-index: 9000; display: none; align-items: center; justify-content: center; padding: 1rem; }
.ba-modal.is-open { display: flex; }
.ba-modal__backdrop { position: absolute; inset: 0; background: rgba(14, 26, 46, 0.75); backdrop-filter: blur(10px); }
.ba-modal__panel { position: relative; width: 100%; max-width: 520px; max-height: calc(100vh - 2rem); overflow: auto; border-radius: 1.25rem; background: var(--ba-carbon); border: 1px solid var(--ba-line); box-shadow: 0 40px 120px rgba(0, 0, 0, 0.8), 0 0 80px -30px rgba(var(--ba-bolt-rgb), 0.5); }

/* Nav link */
.ba-navlink { position: relative; padding: 0.25rem 0; transition: color var(--ba-dur-base); }
.ba-navlink::after { content: ''; position: absolute; left: 50%; right: 50%; bottom: -4px; height: 1px; background: var(--ba-bolt); box-shadow: var(--ba-glow-sm); transition: left var(--ba-dur-base) var(--ba-ease-expo), right var(--ba-dur-base) var(--ba-ease-expo); }
.ba-navlink:hover { color: var(--ba-bolt); }
.ba-navlink:hover::after, .ba-navlink.is-active::after { left: 0; right: 0; }

/* Marquee */
.ba-marquee { display: flex; overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); }
.ba-marquee__track { display: flex; flex-shrink: 0; gap: 3rem; padding-right: 3rem; align-items: center; animation: ba-marquee 32s linear infinite; }
.ba-marquee:hover .ba-marquee__track { animation-play-state: paused; }
.ba-marquee--reverse .ba-marquee__track { animation-direction: reverse; }
@keyframes ba-marquee { to { transform: translateX(-100%); } }

/* Bolt mark stripes (hero SVG) */
.ba-bolt-mark { filter: drop-shadow(0 0 30px rgba(var(--ba-bolt-rgb), 0.35)); }
.ba-bolt-mark .stripe { transform-box: fill-box; transform-origin: left center; }

/* Scroll cue (Fielder) */
.ba-mouse { width: 22px; height: 34px; border: 1.5px solid rgba(255, 255, 255, 0.7); border-radius: 9999px; display: flex; justify-content: center; padding-top: 7px; }
.ba-mouse span { width: 3px; height: 6px; border-radius: 9999px; background: var(--ba-bolt); box-shadow: var(--ba-glow-sm); animation: ba-wheel 1.8s var(--ba-ease-expo) infinite; }
@keyframes ba-wheel { 0% { transform: translateY(0); opacity: 1; } 100% { transform: translateY(12px); opacity: 0; } }

/* swatch hover lift */
.ba-swatch { transition: transform 0.5s var(--ba-ease-expo), box-shadow 0.5s ease; }
.ba-swatch:hover { transform: translateY(-6px); }

/* copy-toast */
.ba-toast { position: fixed; left: 50%; bottom: 28px; z-index: 9500; transform: translate(-50%, calc(100% + 60px)); transition: transform 0.5s var(--ba-ease-expo); }
.ba-toast.is-visible { transform: translate(-50%, 0); }

/* reveal defaults (JS sets the start state; content stays visible without JS) */
.js .reveal-up { opacity: 0; transform: translateY(40px); }
.js .reveal-mask > * { transform: translateY(105%); }
.reveal-mask { overflow: hidden; }

/* demo replay highlight */
.ba-demo-stage { position: relative; height: 160px; border-radius: 0.75rem; overflow: hidden; border: 1px solid var(--ba-line); background: var(--ba-carbon); display: flex; align-items: center; justify-content: center; }

/* perf: ambient animations stop while their region is off-screen (set by initAmbientPause) */
.ba-paused, .ba-paused *, .ba-paused *::before, .ba-paused *::after { animation-play-state: paused !important; }

/* ---------- 5. ACCESSIBILITY ---------- */
.ba-skip { position: absolute; left: -9999px; top: 1rem; z-index: 10001; }
.ba-skip:focus { left: 1rem; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  .js .reveal-up { opacity: 1; transform: none; }
  .js .reveal-mask > * { transform: none; }
}

@media (max-width: 639px) {
  html, body { max-width: 100% !important; overflow-x: hidden !important; }
  img, video, canvas, svg { max-width: 100%; }
}

/* ---------- 6. PAGE-LEVEL HELPERS ---------- */
@keyframes ba-float { 0%, 100% { transform: translate3d(0, 0, 0) rotate(0deg); } 50% { transform: translate3d(0, -18px, 0) rotate(1.5deg); } }
.ba-float { animation: ba-float 7s ease-in-out infinite; }

/* tape band (crossing marquees under hero) */
.ba-tape { position: relative; z-index: 30; padding: 1.1rem 0; font-family: var(--ba-font-impact); font-size: clamp(1.5rem, 3vw, 2.5rem); text-transform: uppercase; letter-spacing: 0.02em; line-height: 1; white-space: nowrap; }
.ba-tape--bolt { background: var(--ba-bolt); color: var(--ba-void); transform: rotate(-2deg); box-shadow: 0 0 80px -10px rgba(var(--ba-bolt-rgb), 0.55); }
.ba-tape--ghost { background: var(--ba-navy); color: transparent; -webkit-text-stroke: 1px rgba(255, 255, 255, 0.45); transform: rotate(2deg); margin-top: -3.6rem; }

/* spec table rows (roster hover from Verglas) */
.ba-row { transition: padding-left var(--ba-dur-base) var(--ba-ease-expo), background-color var(--ba-dur-base); }
.ba-row:hover { padding-left: 1rem; background: rgba(255, 255, 255, 0.015); }
.ba-row:hover .ba-row__accent { color: var(--ba-bolt); }

/* code chip */
.ba-code { font-family: var(--ba-font-mono); font-size: 0.6875rem; color: var(--ba-fog); background: rgba(255, 255, 255, 0.04); border: 1px solid var(--ba-line); border-radius: 0.375rem; padding: 0.15rem 0.45rem; white-space: nowrap; }

/* framed demo window */
.ba-frame { position: relative; border-radius: 1rem; border: 1px solid var(--ba-line); background: var(--ba-carbon); overflow: hidden; }
.ba-frame__bar { display: flex; align-items: center; gap: 6px; padding: 0.7rem 1rem; border-bottom: 1px solid var(--ba-line); }
.ba-frame__bar i { width: 8px; height: 8px; border-radius: 9999px; background: rgba(255, 255, 255, 0.12); }

/* icon tile */
.ba-icon-tile { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.75rem; aspect-ratio: 1; border: 1px solid var(--ba-line-soft); background: var(--ba-carbon); color: var(--ba-fog); transition: all var(--ba-dur-base) var(--ba-ease-expo); cursor: pointer; }
.ba-icon-tile iconify-icon { font-size: 26px; transition: transform 0.5s var(--ba-ease-expo), color var(--ba-dur-base), filter var(--ba-dur-base); }
.ba-icon-tile span { font-family: var(--ba-font-mono); font-size: 9px; letter-spacing: 0.08em; color: var(--ba-ash); text-align: center; padding: 0 4px; transition: color var(--ba-dur-base); }
.ba-icon-tile:hover { background: rgba(var(--ba-bolt-rgb), 0.06); border-color: rgba(var(--ba-bolt-rgb), 0.4); }
.ba-icon-tile:hover iconify-icon { color: var(--ba-bolt); transform: scale(1.25) rotate(-8deg); filter: drop-shadow(0 0 10px rgba(var(--ba-bolt-rgb), 0.7)); }
.ba-icon-tile:hover span { color: var(--ba-fog); }
@keyframes ba-dash { to { stroke-dashoffset: -32; } }