/* ═══════════════════════════════════════════════════════════════
   NEVAI LAB — ULTIMATE DESIGN SYSTEM v3 MAX
   Perfect white + perfect dark · modern scrollbar · mobile-first
   silent instant reload · icons · zero content-hiding (safe design)
   ═══════════════════════════════════════════════════════════════ */

/* ─── 1. PERFECT THEME TOKENS: WHITE MODE + DARK MODE ─── */
:root {
  --nv-bg-primary: #09090b;
  --nv-bg-secondary: #111113;
  --nv-bg-tertiary: #18181b;
  --nv-bg-elevated: #1c1c1f;
  --nv-bg-glass: rgba(9, 9, 11, 0.85);
  --nv-bg-glass-heavy: rgba(9, 9, 11, 0.95);
  --nv-border-primary: rgba(255, 255, 255, 0.06);
  --nv-border-secondary: rgba(255, 255, 255, 0.1);
  --nv-border-accent: rgba(255, 255, 255, 0.16);
  --nv-text-primary: #fafafa;
  --nv-text-secondary: #a1a1aa;
  --nv-text-tertiary: #71717a;
  --nv-accent: #ffffff;
  --nv-accent-dim: rgba(255, 255, 255, 0.08);
  --nv-accent-hover: rgba(255, 255, 255, 0.14);
  --nv-green: #4ade80;
  --nv-blue: #60a5fa;
  --nv-purple: #c084fc;
  --nv-amber: #fbbf24;
  --nv-rose: #fb7185;
  --nv-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --nv-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
  --nv-shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.6);
  --nv-shadow-xl: 0 25px 60px rgba(0, 0, 0, 0.7);
  --nv-radius-sm: 8px;
  --nv-radius-md: 12px;
  --nv-radius-lg: 16px;
  --nv-radius-xl: 24px;
  --nv-radius-full: 9999px;
  --nv-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --nv-ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --nv-scroll-thumb: rgba(255, 255, 255, 0.18);
  --nv-scroll-thumb-hover: rgba(255, 255, 255, 0.34);
  color-scheme: dark;
}
html.light {
  --nv-bg-primary: #ffffff;
  --nv-bg-secondary: #f8fafc;
  --nv-bg-tertiary: #f1f5f9;
  --nv-bg-elevated: #ffffff;
  --nv-bg-glass: rgba(255, 255, 255, 0.86);
  --nv-bg-glass-heavy: rgba(255, 255, 255, 0.97);
  --nv-border-primary: rgba(9, 9, 11, 0.07);
  --nv-border-secondary: rgba(9, 9, 11, 0.12);
  --nv-border-accent: rgba(9, 9, 11, 0.2);
  --nv-text-primary: #09090b;
  --nv-text-secondary: #475569;
  --nv-text-tertiary: #94a3b8;
  --nv-accent: #09090b;
  --nv-accent-dim: rgba(9, 9, 11, 0.05);
  --nv-accent-hover: rgba(9, 9, 11, 0.09);
  --nv-green: #16a34a;
  --nv-blue: #2563eb;
  --nv-purple: #9333ea;
  --nv-amber: #d97706;
  --nv-rose: #e11d48;
  --nv-shadow-sm: 0 1px 2px rgba(9, 9, 11, 0.05);
  --nv-shadow-md: 0 4px 12px rgba(9, 9, 11, 0.08);
  --nv-shadow-lg: 0 12px 40px rgba(9, 9, 11, 0.1);
  --nv-shadow-xl: 0 25px 60px rgba(9, 9, 11, 0.14);
  --nv-scroll-thumb: rgba(9, 9, 11, 0.22);
  --nv-scroll-thumb-hover: rgba(9, 9, 11, 0.38);
  color-scheme: light;
}

/* ─── 2. BASE: no horizontal scroll errors, crisp type, instant theme ─── */
html, body { overflow-x: clip !important; }
html.nv-theme-instant, html.nv-theme-instant *, html.nv-theme-instant *::before, html.nv-theme-instant *::after {
  transition: none !important;
  animation: none !important;
}
html, html body {
  transition: background-color 0.22s ease, color 0.22s ease, border-color 0.22s ease !important;
}
body {
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-tap-highlight-color: transparent;
}
img, video, canvas, svg { max-width: 100%; }
img { height: auto; border-radius: var(--nv-radius-md); }
table { border-collapse: collapse; }

/* ─── 3. ZERO SCROLLBAR — no bars anywhere, scrolling still works ─── */
*, *::before, *::after {
  scrollbar-width: none !important;
  -ms-overflow-style: none !important;
}
*::-webkit-scrollbar, ::-webkit-scrollbar,
html::-webkit-scrollbar, body::-webkit-scrollbar,
main::-webkit-scrollbar, div::-webkit-scrollbar,
pre::-webkit-scrollbar, code::-webkit-scrollbar,
[class*="overflow-y-auto"]::-webkit-scrollbar, [class*="overflow-x-auto"]::-webkit-scrollbar,
#nv-features-card::-webkit-scrollbar, #nv-builders-card::-webkit-scrollbar, #nv-palette-card::-webkit-scrollbar {
  display: none !important;
  width: 0 !important;
  height: 0 !important;
  background: transparent !important;
}
*::-webkit-scrollbar-thumb, *::-webkit-scrollbar-track, *::-webkit-scrollbar-corner {
  display: none !important;
  background: transparent !important;
}
html { scrollbar-width: none !important; }
/* keep momentum touch scrolling with invisible bars */
[class*="overflow-"], pre, code, main, .nv-card-modal {
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}

/* ─── 4. SAFE REVEAL — visible by default, motion only when armed ─── */
.nevai-reveal, .nevai-reveal-left, .nevai-reveal-right, .nevai-reveal-scale {
  opacity: 1 !important;
  transform: none !important;
}
html.nv-rv-on .nevai-reveal:not(.nevai-visible):not([data-dock]):not(header):not(nav):not(footer),
html.nv-rv-on .nevai-reveal-scale:not(.nevai-visible) {
  opacity: 0 !important;
  transform: translateY(18px) !important;
  transition: opacity 0.5s var(--nv-ease-out), transform 0.5s var(--nv-ease-out) !important;
}
html.nv-rv-on .nevai-reveal-left:not(.nevai-visible) {
  opacity: 0 !important; transform: translateX(-24px) !important;
  transition: opacity 0.5s var(--nv-ease-out), transform 0.5s var(--nv-ease-out) !important;
}
html.nv-rv-on .nevai-reveal-right:not(.nevai-visible) {
  opacity: 0 !important; transform: translateX(24px) !important;
  transition: opacity 0.5s var(--nv-ease-out), transform 0.5s var(--nv-ease-out) !important;
}
.nevai-visible { opacity: 1 !important; transform: none !important; }
@keyframes nvEnter { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
@keyframes nvEnterScale { from { opacity: 0; transform: scale(0.96); } to { opacity: 1; transform: scale(1); } }
@keyframes nvPop { 0% { opacity: 0; transform: scale(0.94) translateY(10px); } 100% { opacity: 1; transform: scale(1) translateY(0); } }
.nv-enter { animation: nvEnter 0.5s var(--nv-ease-out) both !important; }
.nv-enter-scale, .nv-pop { animation: nvPop 0.38s var(--nv-ease-out) both !important; }
/* NEVER hide chrome — hard guarantee */
[data-dock], [data-audio-panel], [data-audio-pill], header, nav, footer,
[role="dialog"], [data-modal], #nevai-back-to-top, #nv-scroll-progress,
#nv-features-fab, #nv-builders-fab, #nv-palette-btn, #nv-toast,
#nv-features-modal, #nv-builders-modal, #nv-palette-modal {
  opacity: 1 !important;
  visibility: visible !important;
}
[data-dock].nevai-reveal { translate: -50% 0 !important; transform: none !important; }

/* ─── 5. SILENT MODE = instant reload, zero weird motion ─── */
html.nv-silent *, html.nv-silent *::before, html.nv-silent *::after,
body.animations-off *, body.animations-off *::before, body.animations-off *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
  scroll-behavior: auto !important;
}
html.nv-silent #root, body.animations-off #root { animation: none !important; }
html.nv-silent, html.nv-silent body, body.animations-off, body.animations-off #root { scroll-behavior: auto !important; }
body.animations-off .nv-enter, body.animations-off .nv-enter-scale, body.animations-off .nv-pop,
body.animations-off .nevai-reveal, body.animations-off .nevai-reveal-left,
body.animations-off .nevai-reveal-right, body.animations-off .nevai-reveal-scale,
html.nv-silent .nv-enter, html.nv-silent .nv-enter-scale {
  animation: none !important; transition: none !important; opacity: 1 !important; transform: none !important;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
  .nevai-reveal, .nevai-reveal-left, .nevai-reveal-right, .nevai-reveal-scale { opacity: 1 !important; transform: none !important; }
}

/* ─── 6. DOCK (bottom bar): floating glass pill — mobile-fixed, never covers ─── */
body { padding-bottom: 0; }
[data-dock] {
  background: var(--nv-bg-glass-heavy) !important;
  backdrop-filter: blur(20px) saturate(180%) !important;
  -webkit-backdrop-filter: blur(20px) saturate(180%) !important;
  border: 1px solid var(--nv-border-secondary) !important;
  border-radius: var(--nv-radius-full) !important;
  box-shadow: var(--nv-shadow-xl) !important;
  scroll-behavior: smooth;
  overscroll-behavior-x: contain;
  -webkit-overflow-scrolling: touch;
}
html.nv-silent [data-dock] { scroll-behavior: auto !important; }
[data-dock] button {
  border-radius: var(--nv-radius-full) !important;
  position: relative !important;
  transition: background-color 0.15s ease, transform 0.12s ease !important;
  flex-shrink: 0;
}
[data-dock] button:active { transform: scale(0.9) !important; }
[data-dock] button:focus-visible { outline: 2px solid var(--nv-blue) !important; outline-offset: 2px !important; }
@keyframes nvPulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.45; transform: scale(1.6); } }
[data-dock] .animate-pulse { animation: nvPulse 2s ease-in-out infinite !important; box-shadow: 0 0 8px var(--nv-green) !important; }
body.compact-dock [data-dock] { translate: -50% 0 !important; transform: scale(0.86) !important; transform-origin: bottom center !important; }
body.nv-no-dock-labels [data-dock] button span:not(.w-2):not(svg) { display: none !important; }

/* ─── 6b. DOCK IN WHITE MODE: dark text on the light pill (fixes invisible buttons) ─── */
html.light [data-dock] {
  background: rgba(255, 255, 255, 0.94) !important;
  color: #09090b !important;
  border-color: rgba(9, 9, 11, 0.12) !important;
  box-shadow: 0 12px 40px rgba(9, 9, 11, 0.12) !important;
}
html.light [data-dock] button { color: #09090b !important; }
html.light [data-dock] button:hover { background: rgba(9, 9, 11, 0.07) !important; }
html.light [data-dock] button:active { background: rgba(9, 9, 11, 0.1) !important; }
/* narration-playing state uses .bg-white — invert it so it stays visible on white */
html.light [data-dock] button[class*="bg-white"] { background: #09090b !important; color: #ffffff !important; }
html.light [data-dock] .border-neutral-800 { border-color: rgba(9, 9, 11, 0.12) !important; }
html.light [data-dock] .text-neutral-300 { color: #52525b !important; }
html.light [data-dock] .text-white { color: #09090b !important; }
html.light [data-dock] button[class*="bg-white"].text-white { color: #ffffff !important; }
/* dark mode: keep bundle look, just ensure hover/active read well */
html.dark [data-dock] button:hover { background: rgba(255, 255, 255, 0.14) !important; }

/* ─── 6c. DOCK CENTER LOCK: beats bundle left:0;right:0, single shift mechanism ─── */
[data-dock] {
  left: 50% !important;
  right: auto !important;
  translate: -50% 0 !important;
  transform: none !important;
  width: max-content !important;
  max-width: min(96vw, 720px) !important;
  margin-inline: 0 !important;
  bottom: calc(env(safe-area-inset-bottom) + 0.75rem) !important;
}
@media (min-width: 640px) {
  [data-dock] { bottom: 1.5rem !important; }
}

/* ─── 6d. DOCK IN DARK MODE: elevated pill, can never blend into black bg ─── */
html.dark [data-dock] {
  display: flex !important;
  opacity: 1 !important;
  visibility: visible !important;
  background: rgba(24, 24, 27, 0.94) !important;
  border-color: rgba(255, 255, 255, 0.18) !important;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(255, 255, 255, 0.05), 0 0 28px rgba(255, 255, 255, 0.06) !important;
}
html.dark [data-dock] button { color: #fafafa !important; }
html.dark [data-dock] button svg { color: inherit !important; }

/* ─── 7. HEADER / SIDEBAR DRAWER — mobile fix ─── */
header { position: sticky; z-index: 40; }
/* any mobile dropdown/drawer panel inside header must be usable */
header [class*="absolute"], header [class*="fixed"] { max-height: min(78dvh, 640px); overflow-y: auto; -webkit-overflow-scrolling: touch; }
header nav button, header button { min-height: 36px; }
/* mobile menu overlay helper injected by JS */
#nv-drawer-scrim { position: fixed; inset: 0; z-index: 39; background: rgba(0,0,0,0.45); backdrop-filter: blur(4px); }
#nv-drawer-scrim[hidden] { display: none !important; }

/* ─── 8. ACCOUNT / MODALS / AUDIO — always on top, always usable ─── */
[data-audio-panel] {
  background: var(--nv-bg-glass-heavy) !important;
  backdrop-filter: blur(24px) saturate(200%) !important;
  -webkit-backdrop-filter: blur(24px) saturate(200%) !important;
  border: 1px solid var(--nv-border-secondary) !important;
  border-radius: var(--nv-radius-lg) !important;
  box-shadow: var(--nv-shadow-xl) !important;
  max-height: min(80dvh, 620px);
  overflow-y: auto;
}
[data-audio-panel] input[type="range"] {
  -webkit-appearance: none !important; appearance: none !important;
  height: 4px !important; border-radius: 99px !important;
  background: var(--nv-border-secondary) !important; outline: none !important;
}
[data-audio-panel] input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none !important; width: 14px !important; height: 14px !important;
  border-radius: 50% !important; background: var(--nv-text-primary) !important; cursor: pointer !important;
}
[data-modal], [role="dialog"] { backdrop-filter: blur(12px) !important; -webkit-backdrop-filter: blur(12px) !important; }
/* injected account power section */
#nv-account-power { border-top: 1px dashed var(--nv-border-secondary); margin-top: 12px; padding-top: 12px; }
#nv-account-power .nv-sec-label { font-size: 10px; font-weight: 800; letter-spacing: 0.12em; opacity: 0.55; margin: 0 0 8px; font-family: 'Space Mono', monospace; }
#nv-account-power .nv-pwr-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 12px; border-radius: 12px; border: 1px solid var(--nv-border-primary); margin-bottom: 8px; background: transparent; }
#nv-account-power .nv-pwr-title { font-size: 11px; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; display: flex; align-items: center; gap: 6px; }
#nv-account-power .nv-pwr-sub { font-size: 11px; opacity: 0.65; margin-top: 1px; }
#nv-account-power .nv-pwr-actions { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
/* compact 2-column toggle grid — all settings visible with minimal scroll */
#nv-account-power .nv-pwr-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 8px; }
#nv-account-power .nv-pwr-grid .nv-pwr-row { margin-bottom: 0; padding: 8px 10px; }
#nv-account-power .nv-pwr-grid .nv-pwr-title { font-size: 10px; }
#nv-account-power .nv-pwr-grid .nv-pwr-sub { font-size: 10px; }
@media (max-width: 600px) { #nv-account-power .nv-pwr-grid { grid-template-columns: 1fr; } }
/* account tabs: sticky switcher, zero scroll per tab */
.nv-tabbar { position: sticky; top: 0; z-index: 5; display: flex; gap: 6px; overflow-x: auto; padding: 10px 2px; margin-bottom: 6px; background: var(--nv-bg-glass-heavy); border-bottom: 1px dashed var(--nv-border-secondary); }
.nv-tabbtn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; border-radius: 99px; font-size: 10px; font-weight: 800; letter-spacing: 0.08em; border: 1px solid var(--nv-border-secondary); background: transparent; color: inherit; cursor: pointer; white-space: nowrap; min-height: 34px; flex-shrink: 0; }
.nv-tabbtn svg { width: 13px; height: 13px; }
.nv-tabbtn.nv-on { background: var(--nv-text-primary); color: var(--nv-bg-primary); border-color: var(--nv-text-primary); }
/* softer account backdrop — page stays readable behind the panel */
div.fixed.inset-0.nv-account { background-color: rgba(0, 0, 0, 0.5) !important; backdrop-filter: blur(6px) !important; -webkit-backdrop-filter: blur(6px) !important; }
/* compact bundle chrome inside account only — every tab fits without scroll */
.nv-account .mb-5 { margin-bottom: 10px !important; }
.nv-account .mb-6 { margin-bottom: 10px !important; }
.nv-account .p-4 { padding: 12px !important; }
.nv-account .p-5 { padding: 12px !important; }
.nv-account .gap-3 { gap: 8px !important; }
.nv-account .gap-4 { gap: 10px !important; }
/* wide modal, two-column content grid — fits everything, React-safe (no DOM moves) */
@media (min-width: 720px) {
  .nv-account div[class*="max-w-lg"] { max-width: 44rem !important; }
  .nv-account div[class*="overflow-y-auto"] { display: grid !important; grid-template-columns: 1fr 1fr !important; gap: 10px !important; align-content: start !important; }
  .nv-account [data-nv-tabbar], .nv-account #nv-account-power { grid-column: 1 / -1 !important; }
}
/* compact rows (both: tabs + tighter fit) */
#nv-account-power .nv-pwr-row { padding: 8px 10px; margin-bottom: 6px; }
#nv-account-power .nv-pwr-title { font-size: 10px; }
#nv-account-power .nv-pwr-sub { font-size: 10px; }
#nv-account-power .nv-foot-note { font-size: 10px; }
#nv-account-power .nv-sec-label { margin-bottom: 6px; }
.nv-mini-btn { display: inline-flex; align-items: center; gap: 6px; padding: 7px 13px; border-radius: 99px; font-size: 10px; font-weight: 800; letter-spacing: 0.08em; border: 1px solid var(--nv-border-secondary); cursor: pointer; background: transparent; color: inherit; min-height: 32px; white-space: nowrap; transition: transform 0.12s ease, background-color 0.15s ease !important; }
.nv-mini-btn:hover { background: var(--nv-accent-dim); }
.nv-mini-btn:active { transform: scale(0.94); }
.nv-mini-btn.nv-on { background: var(--nv-text-primary); color: var(--nv-bg-primary); border-color: var(--nv-text-primary); }
.nv-mini-btn.nv-danger { border-color: rgba(244, 63, 94, 0.4); }
.nv-mini-btn svg { width: 12px; height: 12px; }
/* toggle pill */
.nv-toggle { width: 44px; height: 26px; border-radius: 99px; border: 1px solid var(--nv-border-secondary); background: var(--nv-bg-tertiary); position: relative; cursor: pointer; flex-shrink: 0; transition: background-color 0.15s ease !important; }
.nv-toggle::after { content: ""; position: absolute; top: 2px; left: 2px; width: 20px; height: 20px; border-radius: 50%; background: var(--nv-text-tertiary); transition: left 0.15s ease, background-color 0.15s ease !important; }
.nv-toggle.nv-on { background: var(--nv-text-primary); border-color: var(--nv-text-primary); }
.nv-toggle.nv-on::after { left: 20px; background: var(--nv-bg-primary); }

/* ─── 9. INPUTS / BUTTONS / FOCUS / SELECTION — perfect both themes ─── */
html.dark input, html.dark textarea, html.dark select {
  background: var(--nv-bg-tertiary) !important; border-color: var(--nv-border-secondary) !important;
  color: var(--nv-text-primary) !important; border-radius: var(--nv-radius-sm) !important;
}
html.dark input:focus, html.dark textarea:focus, html.dark select:focus {
  border-color: var(--nv-border-accent) !important; box-shadow: 0 0 0 3px var(--nv-accent-dim) !important;
}
html.dark input::placeholder, html.dark textarea::placeholder { color: #52525b !important; }
html.light input, html.light textarea, html.light select {
  background: #f9fafb !important; border-color: #e4e4e7 !important;
  color: #09090b !important; border-radius: var(--nv-radius-sm) !important;
}
html.light input:focus, html.light textarea:focus, html.light select:focus {
  border-color: #09090b !important; box-shadow: 0 0 0 3px rgba(0,0,0,0.06) !important;
}
button { transition: background-color 0.15s ease, transform 0.12s ease, opacity 0.15s ease !important; }
button:active { transform: scale(0.97) !important; }
:focus-visible { outline: 2px solid var(--nv-blue) !important; outline-offset: 2px !important; border-radius: 6px !important; }
html.dark ::selection { background: rgba(255,255,255,0.22) !important; color: #fff !important; }
html.light ::selection { background: rgba(9,9,11,0.14) !important; color: #000 !important; }
a { transition: color 0.15s ease, opacity 0.15s ease !important; }

/* ─── 10. CARDS / TABLES / CODE / TYPE — design-error fixes ─── */
main { min-height: 60vh; }
.nevai-card, [class*="rounded-2xl"][class*="border"] { border-color: var(--nv-border-primary) !important; transition: border-color 0.2s ease, box-shadow 0.25s ease, transform 0.25s var(--nv-ease-out) !important; }
@media (hover: hover) {
  main .nevai-card:hover, main [class*="rounded-2xl"][class*="border"]:hover { border-color: var(--nv-border-secondary) !important; box-shadow: var(--nv-shadow-md) !important; }
}
.markdown-body img, .prose img { box-shadow: var(--nv-shadow-md); max-width: 100%; height: auto; }
.markdown-body table, .prose table { border-radius: var(--nv-radius-sm); overflow: hidden; border: 1px solid var(--nv-border-primary); width: 100%; }
.markdown-body table th, .prose table th { background: var(--nv-bg-tertiary); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; padding: 8px 12px; }
.markdown-body table td, .prose table td { padding: 8px 12px; border-top: 1px solid var(--nv-border-primary); }
.markdown-body table tbody tr:hover, .prose table tbody tr:hover { background: var(--nv-accent-dim); }
.markdown-body pre, .prose pre { border-radius: var(--nv-radius-md); border: 1px solid var(--nv-border-primary); overflow-x: auto; -webkit-overflow-scrolling: touch; }
.markdown-body pre code, .prose pre code { font-family: 'Space Mono', monospace; font-size: 0.82rem; line-height: 1.7; }
html.dark .markdown-body pre, html.dark .prose pre { background: #0d0d10; border-color: rgba(255,255,255,0.07); }
.markdown-body h1, .markdown-body h2, .markdown-body h3, .prose h1, .prose h2, .prose h3 { font-family: 'Bodoni Moda', serif; letter-spacing: -0.02em; line-height: 1.2; text-wrap: balance; }
.markdown-body { overflow-wrap: break-word; word-break: break-word; }
.markdown-body a { text-decoration: underline; text-underline-offset: 3px; }

/* ─── 11. SCROLL PROGRESS + BACK TO TOP + FABS (icons, no overlap) ─── */
#nv-scroll-progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 9999; opacity: 0; transition: opacity 0.3s ease; pointer-events: none; background: transparent; }
#nv-scroll-progress > div { height: 100%; width: 0%; border-radius: 99px; background: linear-gradient(90deg, var(--nv-green), var(--nv-blue)); }
#nevai-back-to-top {
  position: fixed; bottom: 96px; right: 18px; width: 44px; height: 44px; border-radius: 50%;
  background: var(--nv-bg-glass-heavy); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--nv-border-secondary); color: var(--nv-text-primary);
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  opacity: 0; transform: translateY(16px); transition: opacity 0.25s ease, transform 0.25s var(--nv-ease-out); z-index: 45;
  box-shadow: var(--nv-shadow-md); pointer-events: none;
}
#nevai-back-to-top.nv-show { opacity: 1; transform: translateY(0); pointer-events: auto; }
#nevai-back-to-top:hover { transform: translateY(-2px); }
#nevai-back-to-top svg { width: 18px; height: 18px; }
.nv-fab {
  position: fixed; height: 44px; padding: 0 16px; border-radius: 99px;
  font-size: 11px; font-weight: 800; letter-spacing: 0.1em;
  display: flex; align-items: center; gap: 8px; cursor: pointer; z-index: 45; box-shadow: var(--nv-shadow-lg);
  transition: transform 0.2s var(--nv-ease-out), background-color 0.15s ease !important;
  border: 1px solid var(--nv-border-accent);
  min-height: 44px;
}
.nv-fab:hover { transform: translateY(-2px); }
.nv-fab:active { transform: scale(0.95); }
.nv-fab svg { width: 15px; height: 15px; }
#nv-features-fab { bottom: 96px; left: 18px; background: var(--nv-text-primary); color: var(--nv-bg-primary); }
#nv-builders-fab { bottom: 148px; left: 18px; background: var(--nv-bg-glass-heavy); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); color: var(--nv-text-primary); }
#nv-palette-btn { bottom: 200px; left: 18px; background: var(--nv-bg-glass-heavy); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); color: var(--nv-text-primary); }
#nv-features-fab, #nv-builders-fab, #nv-palette-btn { display: none !important; visibility: hidden !important; pointer-events: none !important; }
html.nv-silent .nv-fab:hover, html.nv-silent #nevai-back-to-top:hover { transform: none; }

/* ─── 12. FEATURES / BUILDERS / PALETTE MODALS — searchable, icon-rich ─── */
.nv-overlay { position: fixed; inset: 0; z-index: 10000; display: flex; align-items: center; justify-content: center; padding: 16px; background: rgba(0,0,0,0.6); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.nv-overlay[hidden] { display: none !important; }
.nv-card-modal { width: 100%; max-width: 720px; max-height: 86dvh; overflow-y: auto; overscroll-behavior: contain; border-radius: 24px; background: var(--nv-bg-glass-heavy); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); border: 1px solid var(--nv-border-secondary); box-shadow: var(--nv-shadow-xl); padding: 22px; color: var(--nv-text-primary); -webkit-overflow-scrolling: touch; }
.nv-card-modal h2 { font-family: 'Bodoni Moda', serif; font-size: 28px; margin: 0 0 4px; letter-spacing: -0.02em; line-height: 1.15; }
.nv-card-modal .nv-feat-sub { font-size: 11px; opacity: 0.65; margin-bottom: 12px; font-family: 'Space Mono', monospace; letter-spacing: 0.08em; text-transform: uppercase; }
.nv-search { width: 100%; padding: 10px 14px 10px 38px; border-radius: 99px; border: 1px solid var(--nv-border-secondary); background: var(--nv-bg-tertiary); color: var(--nv-text-primary); font-size: 13px; outline: none; margin-bottom: 12px; }
.nv-search::placeholder { color: var(--nv-text-tertiary); }
.nv-search-wrap { position: relative; }
.nv-search-wrap svg { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); width: 15px; height: 15px; opacity: 0.5; pointer-events: none; }
.nv-cat-label { font-size: 10px; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; opacity: 0.55; margin: 14px 0 8px; font-family: 'Space Mono', monospace; }
.nv-feat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.nv-feat { display: flex; gap: 10px; align-items: flex-start; padding: 11px 12px; border: 1px solid var(--nv-border-primary); border-radius: 14px; font-size: 12px; line-height: 1.45; background: transparent; transition: border-color 0.15s ease, background-color 0.15s ease !important; }
button.nv-feat { cursor: pointer; color: inherit; text-align: left; width: 100%; font-family: inherit; }
button.nv-feat:hover { border-color: var(--nv-border-accent); background: var(--nv-accent-dim); }
.nv-feat b { display: block; font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 2px; }
.nv-feat span.nv-d { display: block; opacity: 0.7; }
.nv-feat svg.nv-ico-sm { flex-shrink: 0; margin-top: 1px; }
.nv-feat .nv-badge { display: inline-block; margin-top: 4px; font-size: 9px; font-weight: 800; letter-spacing: 0.08em; padding: 2px 8px; border-radius: 99px; border: 1px solid var(--nv-border-secondary); opacity: 0.8; }
.nv-builder-open { margin-left: auto; flex-shrink: 0; align-self: center; }
.nv-foot-note { margin-top: 14px; font-size: 11px; opacity: 0.6; font-family: 'Space Mono', monospace; letter-spacing: 0.06em; }
.nv-kbd { display: inline-block; padding: 1px 7px; border-radius: 6px; border: 1px solid var(--nv-border-secondary); font-family: 'Space Mono', monospace; font-size: 10px; font-weight: 700; }
@media (max-width: 560px) { .nv-feat-grid { grid-template-columns: 1fr; } .nv-card-modal { padding: 18px; border-radius: 20px; } }

/* ─── 13. TOAST ─── */
#nv-toast { position: fixed; bottom: 150px; left: 50%; transform: translateX(-50%) translateY(10px); z-index: 10001; background: var(--nv-text-primary); color: var(--nv-bg-primary); font-size: 12px; font-weight: 700; padding: 10px 18px; border-radius: 99px; opacity: 0; transition: opacity 0.25s ease, transform 0.25s var(--nv-ease-out); pointer-events: none; box-shadow: var(--nv-shadow-lg); white-space: nowrap; max-width: calc(100vw - 32px); overflow: hidden; text-overflow: ellipsis; }
#nv-toast.nv-show { opacity: 1; transform: translateX(-50%) translateY(0); }
html.nv-silent #nv-toast { transition: none; }

/* ─── 14. ICONS: crisp inline SVG ─── */
.nv-ico { width: 16px; height: 16px; flex-shrink: 0; }
.nv-ico-sm { width: 13px; height: 13px; flex-shrink: 0; }
.nv-ico-lg { width: 20px; height: 20px; flex-shrink: 0; }
svg.nv-ico, svg.nv-ico-sm { vertical-align: -2px; }

/* ─── 15. MOBILE: full app usable, dock never covers content ─── */
@media (max-width: 640px) {
  body { padding-bottom: 84px; }
  [data-dock] {
    bottom: calc(env(safe-area-inset-bottom) + 8px) !important;
    padding: 4px 8px !important;
    max-width: calc(100vw - 12px) !important;
    overflow-x: auto !important;
    scroll-snap-type: x proximity;
    justify-content: safe center !important;
  }
  [data-dock] button { min-width: 42px !important; min-height: 42px !important; scroll-snap-align: center; }
  [data-dock] button span:not(.w-2):not(svg) { display: none !important; }
  body.nv-show-dock-labels [data-dock] button span { display: inline !important; }
  [data-audio-panel] { width: calc(100vw - 16px) !important; max-width: 400px !important; left: 8px !important; right: 8px !important; }
  #nevai-back-to-top { bottom: 152px; right: 12px; width: 44px; height: 44px; }
  #nv-features-fab { bottom: 152px; left: 12px; }
  #nv-builders-fab { bottom: 204px; left: 12px; }
  #nv-palette-btn { bottom: 256px; left: 12px; }
  .nv-card-modal { max-height: 88dvh; }
  .markdown-body table, .prose table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .markdown-body img, .prose img { max-width: 100%; height: auto; }
  .nv-feat-grid { grid-template-columns: 1fr; }
  header { padding-left: 8px !important; padding-right: 8px !important; }
}
@media (min-width: 641px) {
  body { padding-bottom: 96px; }
}
@supports (padding: env(safe-area-inset-bottom)) {
  [data-dock] { padding-bottom: calc(env(safe-area-inset-bottom) + 4px) !important; }
}
@media print {
  [data-dock], nav, footer, [data-audio-panel], #nevai-back-to-top,
  #nv-features-fab, #nv-builders-fab, #nv-palette-btn, #nv-scroll-progress, #nv-toast { display: none !important; }
  body { padding-bottom: 0; }
}

/* ─── 16. READING / ACCESSIBILITY PREFS (driven by JS, instant) ─── */
html[data-readsize="s"] .prose, html[data-readsize="s"] .markdown-body { font-size: 0.85rem !important; }
html[data-readsize="m"] .prose, html[data-readsize="m"] .markdown-body { font-size: 0.95rem !important; }
html[data-readsize="l"] .prose, html[data-readsize="l"] .markdown-body { font-size: 1.05rem !important; }
html[data-readsize="xl"] .prose, html[data-readsize="xl"] .markdown-body { font-size: 1.2rem !important; }
html[data-readlh="c"] .prose, html[data-readlh="c"] .markdown-body { line-height: 1.55 !important; }
html[data-readlh="r"] .prose, html[data-readlh="r"] .markdown-body { line-height: 1.95 !important; }
html[data-readwidth="n"] main > div, html[data-readwidth="n"] main > article { max-width: 72ch !important; margin-left: auto; margin-right: auto; }
html[data-contrast="high"] { --nv-border-secondary: rgba(128, 128, 128, 0.45) !important; }
html.light[data-contrast="high"] { --nv-text-secondary: #0f172a !important; --nv-text-tertiary: #334155 !important; }
html.dark[data-contrast="high"] { --nv-text-secondary: #e4e4e7 !important; --nv-text-tertiary: #a1a1aa !important; }
html[data-transparency="off"] [data-dock], html[data-transparency="off"] [data-audio-panel],
html[data-transparency="off"] .nv-card-modal { backdrop-filter: none !important; -webkit-backdrop-filter: none !important; }
html.dark[data-transparency="off"] [data-dock], html.dark[data-transparency="off"] [data-audio-panel] { background: #09090b !important; }
html.light[data-transparency="off"] [data-dock], html.light[data-transparency="off"] [data-audio-panel] { background: #ffffff !important; }
html[data-targets="big"] button, html[data-targets="big"] [role="button"] { min-height: 44px !important; }
html[data-targets="big"] [data-dock] button { min-width: 48px !important; min-height: 48px !important; }

/* ─── 17. PERF: offscreen articles skip rendering cost ─── */
main article { content-visibility: auto; contain-intrinsic-size: auto 420px; }

/* ─── 18. HIGH-CONTRAST / FORCED-COLORS SAFETY ─── */
@media (forced-colors: active) {
  [data-dock], [data-audio-panel], .nv-card-modal { border: 1px solid ButtonText !important; }
}