/* ══════════════════════════════════════════════════════════
   EPISTEME.FYI
   ══════════════════════════════════════════════════════════ */

*, *::before, *::after {
  margin: 0; padding: 0; box-sizing: border-box;
}

:root {
  --gold:        #D4A853;   /* kept for accents only */
  --gold-dim:    #9A7A3A;
  --gold-light:  #F0CC88;
  --violet:      #C8B8E8;
  --violet-dim:  #8878A8;
  --star:        #E8E4F4;   /* starlight white-violet */
  --star-dim:    #B0AAC8;   /* dimmer starlight */
  --star-bright: #F4F2FF;   /* brightest starlight */
  --bg:          #07060A;
  --mono:        'Space Mono', 'SF Mono', 'Fira Code', monospace;
  --serif:       'Cormorant Garamond', Georgia, serif;
}

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  background: var(--bg);
  font-family: var(--mono);
  -webkit-font-smoothing: antialiased;
  cursor: none;
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}

/* ═══ LAYERS ═══ */

#canvas {
  position: fixed; inset: 0; z-index: 1; cursor: none;
}

#overlay {
  position: fixed; inset: 0; z-index: 10; pointer-events: none;
}

#overlay a, #overlay nav { pointer-events: auto; }

#vignette {
  position: fixed; inset: 0;
  background: radial-gradient(
    ellipse at center,
    transparent 20%,
    rgba(7,6,10,0.35) 55%,
    rgba(7,6,10,0.82) 100%
  );
  pointer-events: none;
}

/* ═══ SCANLINE ═══ */

#scanline {
  position: fixed; inset: 0;
  pointer-events: none; z-index: 20;
  background: repeating-linear-gradient(
    transparent 0px, transparent 2px,
    rgba(0,0,0,0.018) 2px, rgba(0,0,0,0.018) 4px
  );
}

#scanline::after {
  content: '';
  position: absolute; left: 0; width: 100%; height: 10px;
  background: linear-gradient(transparent, rgba(200,190,240,0.008), transparent);
  animation: scanMove 14s linear infinite;
}

@keyframes scanMove {
  0%   { top: -10px; }
  100% { top: 100%; }
}

/* ═══ BOOT SCREEN ═══ */

#boot-screen {
  position: fixed; inset: 0;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  z-index: 50; opacity: 1;
  transition: opacity 1.2s ease;
}

#boot-screen.fade-out { opacity: 0; }

#boot-inner { min-width: 360px; max-width: 90vw; }

#boot-text {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--star);
  opacity: 0.65;
  line-height: 2.4;
}

.boot-line { white-space: nowrap; overflow: hidden; }

#boot-cursor {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--star);
  opacity: 0.65;
  animation: cursorBlink 0.9s step-end infinite;
}

@keyframes cursorBlink {
  0%, 100% { opacity: 0.65; }
  50%       { opacity: 0; }
}

/* ═══ HUD CORNERS ═══ */

.hud {
  position: fixed;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 2.5px;
  pointer-events: none;
  text-transform: uppercase;
}

#hud-tl { top: 22px; left: 24px;  color: var(--star-dim);       opacity: 0.3;  }
#hud-tr { top: 22px; right: 24px; color: var(--violet-dim); opacity: 0.22; text-align: right; }
#hud-bl { bottom: 22px; left: 24px;  color: var(--violet-dim); opacity: 0.22; }
#hud-br { bottom: 22px; right: 24px; color: var(--star-dim);        opacity: 0.25; text-align: right; }

/* ═══ TAGLINE ═══ */

#tagline {
  position: fixed;
  top: 28%;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--serif);
  font-style: italic;
  font-size: 16px;
  letter-spacing: 8px;
  color: var(--star-bright);
  opacity: 0;
  white-space: nowrap;
  pointer-events: none;
  z-index: 10;
  transition: opacity 0.6s ease;
}

/* ═══ TRUTH LINK ═══ */

#truth-link {
  position: fixed;
  bottom: 56px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 4px;
  color: var(--violet-dim);
  opacity: 0;
  white-space: nowrap;
  text-decoration: none;
  pointer-events: none;
  z-index: 10;
  transition: color 0.4s ease;
}

#truth-link:hover { color: var(--violet); }

#truth-link::before {
  content: '→ ';
  color: var(--gold-dim);
}

/* ═══ HIDDEN / REVEALED ═══ */

.hidden {
  opacity: 0 !important;
  visibility: hidden !important;
  transition: opacity 2.5s ease, visibility 0s 2.5s;
  pointer-events: none !important;
}

.revealed {
  visibility: visible !important;
  transition: opacity 2.5s ease, visibility 0s;
}

#hud-tl.revealed  { opacity: 0.3;  }
#hud-tr.revealed  { opacity: 0.22; }
#hud-bl.revealed  { opacity: 0.22; }
#hud-br.revealed  { opacity: 0.25; }
#tagline.revealed {
  pointer-events: auto;
  cursor: default;
  animation: taglineReveal 1.2s ease forwards, taglinePulse 3.5s ease-in-out 1.2s infinite;
}

@keyframes taglineReveal {
  0%   { opacity: 0;    letter-spacing: 14px; filter: blur(6px); }
  60%  { opacity: 0.7;  letter-spacing: 7px;  filter: blur(0px); }
  100% { opacity: 0.55; letter-spacing: 8px;  filter: blur(0px); }
}

#tagline.hovered {
  animation: none !important;
  opacity: 0.15 !important;
  transition: opacity 0.6s ease;
}

@keyframes taglinePulse {
  0%, 100% { opacity: 0.38; text-shadow: none; }
  50%       { opacity: 0.72; text-shadow: 0 0 28px rgba(232,228,244,0.28), 0 0 10px rgba(180,170,220,0.18); }
}

#truth-link.revealed {
  opacity: 1;
  pointer-events: auto;
  visibility: visible !important;
  transition: opacity 2.5s ease 0.5s;
}

/* ═══ HINT ═══ */

#hint {
  position: fixed;
  bottom: 15%;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 7px;
  color: var(--gold-dim);
  opacity: 0;
  white-space: nowrap;
  pointer-events: none;
}

@keyframes hintPulse {
  0%, 100% { opacity: 0; }
  40%, 60%  { opacity: 0.28; }
}

/* ═══ OVERLAY MESSAGE ═══ */

.overlay-msg {
  position: fixed;
  top: 62%;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 7px;
  color: var(--star-bright);
  opacity: 0;
  transition: opacity 1.8s ease;
  white-space: nowrap;
  pointer-events: none;
  z-index: 15;
}

.overlay-msg.visible { opacity: 0.65; }

/* ═══ RESPONSIVE ═══ */

@media (max-width: 768px) {
  #tagline       { font-size: 11px; letter-spacing: 3px; }
  .hud           { font-size: 8px;  letter-spacing: 1.5px; }
  #hint          { font-size: 8px;  letter-spacing: 4px; }
  #boot-text     { font-size: 10px; }
  #truth-link    { font-size: 8px;  letter-spacing: 3px; }
}

@media (max-width: 480px) {
  #hud-tr, #hud-bl { display: none; }
}