/* ==========================================================================
   epistles — HOLO // AURORA PROTOCOL
   A futuristic holographic hyper-realistic design layer. Additive only:
   every rule below is gated behind html[data-holo="on"], so the classic
   red & black theme underneath is never touched and can be restored
   instantly by flipping the toggle back. Contrast discipline holds —
   light text on abyssal dark, glows never replace readable color.
   Palette: abyssal blue-black base, holo cyan / magenta / violet,
   aurora green, warm amber for warnings and gold.
   ========================================================================== */

html[data-holo="on"] {
  --holo-abyss: #05060e;
  --holo-deep: #0a0d1d;
  --holo-glass: rgba(16, 20, 40, 0.58);
  --holo-glass-2: rgba(22, 28, 54, 0.66);
  --holo-cyan: #5ff2ff;
  --holo-magenta: #ff4fd8;
  --holo-violet: #8b5bff;
  --holo-aurora: #5fffc4;
  --holo-amber: #ffc94d;
  --holo-ink: #eef4ff;
  --holo-muted: #9fb0d8;
  --holo-line: rgba(95, 242, 255, 0.16);
  --holo-iridescent: linear-gradient(135deg, #5ff2ff 0%, #8b5bff 34%, #ff4fd8 67%, #5ff2ff 100%);
  --holo-iridescent-soft: linear-gradient(135deg, rgba(95,242,255,.85), rgba(139,91,255,.85), rgba(255,79,216,.85));
  --holo-glow-sm: 0 0 12px rgba(95, 242, 255, 0.28);
  --holo-glow-md: 0 0 28px rgba(139, 91, 255, 0.32), 0 0 12px rgba(95, 242, 255, 0.22);
  --holo-glow-lg: 0 0 64px rgba(139, 91, 255, 0.35), 0 0 24px rgba(255, 79, 216, 0.25);
  --holo-radius: 18px;
  --holo-radius-sm: 12px;
}

/* --- Abyssal cosmos base ------------------------------------------------ */
html[data-holo="on"] body {
  background:
    radial-gradient(1200px 700px at 12% -8%, rgba(139, 91, 255, 0.20), transparent 60%),
    radial-gradient(1000px 620px at 88% 4%, rgba(95, 242, 255, 0.14), transparent 60%),
    radial-gradient(900px 900px at 50% 110%, rgba(255, 79, 216, 0.10), transparent 62%),
    linear-gradient(180deg, #05060e 0%, #070a18 48%, #05060e 100%);
  background-attachment: fixed;
  color: var(--holo-ink);
}

/* Slow-drifting aurora veils behind everything (pure decoration). */
html[data-holo="on"] body::before {
  content: "";
  position: fixed;
  inset: -20vmax;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(38vmax 26vmax at 22% 30%, rgba(95, 242, 255, 0.10), transparent 70%),
    radial-gradient(34vmax 30vmax at 74% 62%, rgba(255, 79, 216, 0.09), transparent 70%),
    radial-gradient(30vmax 24vmax at 55% 12%, rgba(139, 91, 255, 0.12), transparent 70%);
  filter: blur(30px);
  animation: holo-aurora-drift 46s ease-in-out infinite alternate;
}
@keyframes holo-aurora-drift {
  0%   { transform: translate3d(-3vmax, 1vmax, 0) rotate(0.001deg); }
  50%  { transform: translate3d(3vmax, -2vmax, 0) rotate(0.001deg); }
  100% { transform: translate3d(-2vmax, 3vmax, 0) rotate(0.001deg); }
}
/* Keep real content above the aurora veils. */
html[data-holo="on"] body > *:not(.logbook-side):not(.sable-side):not(.logbook-tab):not(.float-dock):not(.sable-pointer):not(#sable-summon):not(.pv-side):not(#pv-summon):not(#cosmos) { position: relative; z-index: 1; }

/* Fine holographic grain: faint scanlines + vignette, non-interactive. */
html[data-holo="on"] body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 2147483000;
  pointer-events: none;
  background:
    repeating-linear-gradient(180deg, rgba(255,255,255,0.022) 0 1px, transparent 1px 3px),
    radial-gradient(120% 90% at 50% 40%, transparent 55%, rgba(2, 3, 8, 0.5) 100%);
  mix-blend-mode: overlay;
  opacity: 0.5;
}

html[data-holo="on"] ::selection {
  background: rgba(139, 91, 255, 0.55);
  color: #ffffff;
}

/* Holographic scrollbar. */
html[data-holo="on"] ::-webkit-scrollbar { width: 11px; height: 11px; }
html[data-holo="on"] ::-webkit-scrollbar-track { background: #070a16; }
html[data-holo="on"] ::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #5ff2ff, #8b5bff, #ff4fd8);
  border-radius: 8px;
  border: 2px solid #070a16;
}

/* --- Glass panels: depth you can see through -------------------------------- */
html[data-holo="on"] .panel,
html[data-holo="on"] .forum-block {
  background:
    linear-gradient(160deg, rgba(255,255,255,0.055), rgba(255,255,255,0.008) 38%),
    var(--holo-glass);
  -webkit-backdrop-filter: blur(16px) saturate(1.25);
  backdrop-filter: blur(16px) saturate(1.25);
  border: 1px solid transparent;
  background-clip: padding-box;
  border-radius: var(--holo-radius);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.09),
    inset 0 -18px 34px rgba(5, 6, 14, 0.45),
    0 18px 44px rgba(2, 4, 12, 0.55),
    var(--holo-glow-sm);
  position: relative;
}
/* Iridescent edge light on every glass panel. */
html[data-holo="on"] .panel::before,
html[data-holo="on"] .forum-block::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(140deg,
    rgba(95,242,255,.55), rgba(139,91,255,.28) 30%,
    rgba(255,79,216,.42) 55%, rgba(95,242,255,.30) 80%,
    rgba(95,242,255,.55));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.75;
}

/* --- Category bars: light-blades ------------------------------------------------ */
html[data-holo="on"] .catbar {
  background:
    linear-gradient(100deg, rgba(95,242,255,.14), rgba(139,91,255,.10) 45%, rgba(255,79,216,.12)),
    linear-gradient(180deg, #10142b, #0a0d1f);
  border: 1px solid rgba(95, 242, 255, 0.22);
  border-radius: var(--holo-radius-sm);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.12),
    0 6px 22px rgba(2,4,12,.6),
    var(--holo-glow-sm);
  color: var(--holo-ink);
  position: relative;
  overflow: hidden;
}
html[data-holo="on"] .catbar::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,.14) 50%, transparent 60%);
  transform: translateX(-120%);
  animation: holo-blade-sheen 9s ease-in-out infinite;
  pointer-events: none;
}
@keyframes holo-blade-sheen {
  0%, 72% { transform: translateX(-120%); }
  100%    { transform: translateX(120%); }
}

/* --- Holographic headings ------------------------------------------------------- */
html[data-holo="on"] .page-title,
html[data-holo="on"] h1, html[data-holo="on"] h2 {
  background: linear-gradient(100deg, #bffaff 0%, #5ff2ff 22%, #a78bff 52%, #ff8fe3 78%, #bffaff 100%);
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  animation: holo-title-shimmer 11s linear infinite;
  filter: drop-shadow(0 0 14px rgba(95, 242, 255, 0.28));
  letter-spacing: 0.04em;
}
@keyframes holo-title-shimmer {
  0% { background-position: 0% 50%; }
  100% { background-position: 220% 50%; }
}
html[data-holo="on"] h3, html[data-holo="on"] .catbar {
  text-shadow: 0 0 18px rgba(95, 242, 255, 0.35);
}

/* --- Main nav: floating command bar --------------------------------------------- */
html[data-holo="on"] .main-nav {
  background: linear-gradient(180deg, rgba(18,24,50,.82), rgba(9,12,26,.72));
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  backdrop-filter: blur(18px) saturate(1.3);
  border-bottom: 1px solid rgba(95, 242, 255, 0.20);
  box-shadow: 0 10px 34px rgba(2,4,12,.6), 0 1px 0 rgba(255,255,255,.06) inset;
}
html[data-holo="on"] .main-nav a {
  color: var(--holo-ink);
  border-radius: 10px;
  transition: box-shadow .25s ease, background .25s ease, color .25s ease;
}
html[data-holo="on"] .main-nav a:hover,
html[data-holo="on"] .main-nav a:focus-visible {
  background: rgba(95, 242, 255, 0.10);
  box-shadow: inset 0 0 0 1px rgba(95,242,255,.35), var(--holo-glow-sm);
  color: #ffffff;
}

/* --- Buttons: charged holo cells -------------------------------------------------- */
html[data-holo="on"] .btn {
  background:
    linear-gradient(180deg, rgba(255,255,255,.14), rgba(255,255,255,.02)),
    linear-gradient(140deg, rgba(95,242,255,.22), rgba(139,91,255,.22), rgba(255,79,216,.20)),
    #12172e;
  border: 1px solid rgba(95, 242, 255, 0.38);
  border-radius: var(--holo-radius-sm);
  color: #f2f8ff;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.16),
    0 6px 20px rgba(2,4,12,.55),
    0 0 14px rgba(95,242,255,.18);
  text-shadow: 0 0 10px rgba(95,242,255,.45);
  position: relative;
  overflow: hidden;
  transition: transform .18s ease, box-shadow .25s ease;
}
html[data-holo="on"] .btn::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 46%;
  left: -60%;
  background: linear-gradient(105deg, transparent, rgba(255,255,255,.32), transparent);
  transform: skewX(-18deg);
  transition: left .5s ease;
  pointer-events: none;
}
html[data-holo="on"] .btn:hover::after { left: 130%; }
html[data-holo="on"] .btn:hover {
  transform: translateY(-1px);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.2),
    0 10px 26px rgba(2,4,12,.6),
    0 0 22px rgba(95,242,255,.4),
    0 0 44px rgba(139,91,255,.22);
}
html[data-holo="on"] .btn:active { transform: translateY(1px) scale(.99); }

/* Theme-cycle + holo toggle: twin dials. */
html[data-holo="on"] .theme-cycle,
html[data-holo="on"] .holo-toggle {
  background: linear-gradient(180deg, rgba(20,26,52,.9), rgba(10,13,28,.9));
  border: 1px solid rgba(139, 91, 255, 0.45);
  border-radius: 999px;
  color: var(--holo-ink);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 0 14px rgba(139,91,255,.25);
  padding: 6px 14px;
}
html[data-holo="on"] .holo-toggle[aria-pressed="true"] {
  border-color: rgba(95,242,255,.7);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.14), var(--holo-glow-md);
  text-shadow: 0 0 12px rgba(95,242,255,.6);
}

/* --- Forum tables: volumetric rows ------------------------------------------------ */
html[data-holo="on"] .forumtable {
  background: rgba(8, 11, 24, 0.6);
  border: 1px solid rgba(95, 242, 255, 0.14);
  border-radius: var(--holo-radius);
  overflow: hidden;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
html[data-holo="on"] .forumtable tr { transition: background .2s ease; }
html[data-holo="on"] .forumtable tbody tr:hover {
  background: linear-gradient(100deg, rgba(95,242,255,.07), rgba(139,91,255,.07), rgba(255,79,216,.06));
  box-shadow: inset 3px 0 0 var(--holo-cyan), inset 0 0 24px rgba(95,242,255,.06);
}
html[data-holo="on"] .forumtable th {
  background: linear-gradient(180deg, rgba(24,30,60,.9), rgba(12,16,34,.9));
  color: var(--holo-cyan);
  text-shadow: 0 0 12px rgba(95,242,255,.5);
  letter-spacing: .08em;
  border-bottom: 1px solid rgba(95,242,255,.25);
}

/* --- Stat cards: instrument readouts ----------------------------------------------- */
html[data-holo="on"] .stat {
  background:
    linear-gradient(165deg, rgba(255,255,255,.06), transparent 40%),
    rgba(12, 16, 34, 0.72);
  border: 1px solid rgba(139, 91, 255, 0.30);
  border-radius: var(--holo-radius-sm);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08), 0 10px 26px rgba(2,4,12,.5);
  transition: transform .2s ease, box-shadow .25s ease;
}
html[data-holo="on"] .stat:hover {
  transform: translateY(-3px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 16px 34px rgba(2,4,12,.6), var(--holo-glow-md);
}
html[data-holo="on"] .stat .vval,
html[data-holo="on"] .stat .tnum {
  color: #fff;
  text-shadow: 0 0 16px rgba(95,242,255,.65), 0 0 4px rgba(95,242,255,.8);
}

/* --- Links: signal threads ----------------------------------------------------------- */
html[data-holo="on"] a { color: #8fd8ff; }
html[data-holo="on"] a:hover {
  color: #d8f6ff;
  text-shadow: 0 0 12px rgba(95,242,255,.7);
}

/* --- Forms: lit input wells ------------------------------------------------------------ */
html[data-holo="on"] input[type="text"],
html[data-holo="on"] input[type="password"],
html[data-holo="on"] input[type="email"],
html[data-holo="on"] input[type="search"],
html[data-holo="on"] input[type="number"],
html[data-holo="on"] textarea,
html[data-holo="on"] select {
  background: rgba(5, 8, 18, 0.78);
  border: 1px solid rgba(95, 242, 255, 0.25);
  border-radius: var(--holo-radius-sm);
  color: var(--holo-ink);
  box-shadow: inset 0 2px 10px rgba(0,0,0,.55), inset 0 0 0 1px rgba(0,0,0,.4);
  transition: border-color .2s ease, box-shadow .25s ease;
}
html[data-holo="on"] input:focus,
html[data-holo="on"] textarea:focus,
html[data-holo="on"] select:focus {
  outline: none;
  border-color: var(--holo-cyan);
  box-shadow: inset 0 2px 10px rgba(0,0,0,.5), 0 0 0 1px rgba(95,242,255,.5), var(--holo-glow-md);
}

/* --- Chat: transmission feed -------------------------------------------------------------- */
html[data-holo="on"] .chat-main {
  background: rgba(6, 9, 20, 0.66);
  border: 1px solid rgba(95, 242, 255, 0.16);
  border-radius: var(--holo-radius);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: inset 0 0 60px rgba(5,8,20,.6), 0 18px 44px rgba(2,4,12,.55);
}
html[data-holo="on"] .chat-messages .msg,
html[data-holo="on"] .chat-messages > div {
  border-bottom: 1px solid rgba(95, 242, 255, 0.08);
}
html[data-holo="on"] .chat-form {
  background: rgba(8, 12, 26, 0.8);
  border-top: 1px solid rgba(95, 242, 255, 0.18);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}
/* PROVOLTA's own teal hologram is hers alone — never overridden. */
html[data-holo="on"] .provolta-msg,
html[data-holo="on"] [data-speaker="provolta"] { filter: none; }

/* --- Small type: holographic micro-labels ----------------------------------------------------- */
html[data-holo="on"] .meta,
html[data-holo="on"] .hud-label,
html[data-holo="on"] .mod-label {
  color: var(--holo-muted);
  letter-spacing: .06em;
}
html[data-holo="on"] .mark {
  color: var(--holo-amber);
  text-shadow: 0 0 12px rgba(255,201,77,.55);
}

/* --- Holographic divider beam --------------------------------------------------------------------- */
html[data-holo="on"] hr {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(95,242,255,.6), rgba(255,79,216,.6), transparent);
  box-shadow: 0 0 12px rgba(95,242,255,.35);
}

/* --- Holo utilities: projection cards, badges, beams ------------------------------------------------- */
html[data-holo="on"] .holo-card {
  background:
    linear-gradient(165deg, rgba(255,255,255,.07), transparent 42%),
    var(--holo-glass-2);
  border-radius: var(--holo-radius);
  border: 1px solid transparent;
  background-clip: padding-box;
  position: relative;
  box-shadow: 0 18px 44px rgba(2,4,12,.55), var(--holo-glow-sm);
  -webkit-backdrop-filter: blur(16px) saturate(1.25);
  backdrop-filter: blur(16px) saturate(1.25);
}
html[data-holo="on"] .holo-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--holo-iridescent);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: .8;
}
html[data-holo="on"] .holo-badge {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 999px;
  font-size: .78em;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #06121a;
  background: var(--holo-iridescent);
  background-size: 200% 100%;
  animation: holo-title-shimmer 7s linear infinite;
  box-shadow: var(--holo-glow-sm);
  font-weight: 700;
}
html[data-holo="on"] .gold {
  color: var(--holo-amber);
  text-shadow: 0 0 14px rgba(255,201,77,.6);
}

/* Avatars & imagery: containment-field glow. */
html[data-holo="on"] img.avatar,
html[data-holo="on"] .avatar img {
  border-radius: 50%;
  border: 2px solid rgba(95,242,255,.5);
  box-shadow: 0 0 18px rgba(95,242,255,.35), 0 0 4px rgba(95,242,255,.6);
}

/* Code & quotes: terminal glass. */
html[data-holo="on"] pre, html[data-holo="on"] code {
  background: rgba(4, 7, 16, 0.85);
  border: 1px solid rgba(139, 91, 255, 0.28);
  border-radius: 8px;
  color: #c9f6ff;
}
html[data-holo="on"] blockquote {
  border-left: 3px solid transparent;
  border-image: linear-gradient(180deg, #5ff2ff, #ff4fd8) 1;
  background: rgba(95,242,255,.05);
  border-radius: 0 var(--holo-radius-sm) var(--holo-radius-sm) 0;
  color: var(--holo-ink);
}

/* Range + checkbox: lit controls. */
html[data-holo="on"] input[type="range"] { accent-color: var(--holo-cyan); }
html[data-holo="on"] input[type="checkbox"],
html[data-holo="on"] input[type="radio"] { accent-color: var(--holo-violet); }

/* Footer: deep-field signal strip. */
html[data-holo="on"] footer, html[data-holo="on"] .site-footer {
  border-top: 1px solid rgba(95,242,255,.18);
  background: linear-gradient(180deg, transparent, rgba(8,11,26,.85));
}

/* --- Responsive: holograms stay light on small screens ----------------------------------------------- */
@media (max-width: 720px) {
  html[data-holo="on"] body::before { filter: blur(44px); opacity: .8; }
  html[data-holo="on"] body::after { opacity: .32; }
  html[data-holo="on"] .panel::before,
  html[data-holo="on"] .forum-block::before,
  html[data-holo="on"] .holo-card::before { opacity: .55; }
}

/* --- Reduced motion: all holograms go still, beauty stays ---------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html[data-holo="on"] body::before,
  html[data-holo="on"] .catbar::after,
  html[data-holo="on"] .page-title,
  html[data-holo="on"] h1, html[data-holo="on"] h2,
  html[data-holo="on"] .holo-badge { animation: none; }
  html[data-holo="on"] .btn::after { display: none; }
}

/* --- Print: holograms off, ink on ------------------------------------------------------------------------ */
@media print {
  html[data-holo="on"] body::before,
  html[data-holo="on"] body::after { display: none; }
}