/* ===== CRT SCANLINE OVERLAY ===== */
.scanline-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  opacity: 0.35;
  background:
    linear-gradient(var(--crt-dark) 50%, var(--crt-dark-half) 50%),
    linear-gradient(90deg, var(--crt-r), var(--crt-g), var(--crt-b));
  background-size: 100% 3px, 3px 100%;
}

/* ===== PANEL SCANLINE ===== */
.panel-scanline {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  z-index: 5;
  pointer-events: none;
  opacity: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--accent-60) 50%,
    transparent 100%
  );
}

/* ===== GLOW TEXT ===== */
.glow-text {
  text-shadow: 0 0 10px var(--accent-50);
}

.glow-text--subtle {
  text-shadow: 0 0 10px var(--accent-30);
}

/* ===== SHARED CRT SCANLINE PATTERN ===== */
.crt-lines {
  pointer-events: none;
  background:
    linear-gradient(var(--crt-dark) 50%, var(--crt-dark-half) 50%),
    linear-gradient(90deg, var(--crt-r), var(--crt-g), var(--crt-b));
  background-size: 100% 3px, 3px 100%;
}

/* ===== SHARED GRID TEXTURE ===== */
.grid-texture {
  pointer-events: none;
  background-image:
    linear-gradient(var(--accent-018) 1px, transparent 1px),
    linear-gradient(90deg, var(--accent-018) 1px, transparent 1px);
  background-size: 80px 80px;
}

/* ===== DIAMOND DECORATORS =====
 * Shared base for all rotated diamond shapes.
 * Each element adds its own size; position is context-specific.
 */
.scan-header__diamond,
.about-footer__diamond,
.proj-header__diamond,
.proj-connector__diamond,
.proj-footer__diamond {
  background: var(--accent-hex);
  transform: rotate(45deg);
}

/* ===== BUTTON CORNER ACCENTS =====
 * Pseudo-element brackets for interactive buttons.
 * Applied via .btn-bracketed class on <button> elements.
 */
.btn-bracketed {
  position: relative;
}

.btn-bracketed::before,
.btn-bracketed::after {
  content: '';
  position: absolute;
  width: 10px;
  height: 10px;
  pointer-events: none;
  border-color: var(--accent-hex);
  border-style: solid;
  border-width: 0;
}

.btn-bracketed::before {
  top: -1px;
  left: -1px;
  border-top-width: 2px;
  border-left-width: 2px;
}

.btn-bracketed::after {
  bottom: -1px;
  right: -1px;
  border-bottom-width: 2px;
  border-right-width: 2px;
}

/* ===== SCROLL HINT (mouse) ===== */
.scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.scroll-hint__mouse {
  width: 26px;
  height: 42px;
  border: 2px solid var(--accent-hex);
  border-radius: 13px;
  position: relative;
  box-shadow:
    0 0 8px var(--accent-30),
    0 0 20px var(--accent-18),
    inset 0 0 8px var(--accent-10);
  animation: mouse-glow 2.4s ease-in-out infinite;
}

.scroll-hint__wheel {
  position: absolute;
  left: 50%;
  top: 8px;
  width: 4px;
  height: 8px;
  margin-left: -2px;
  border-radius: 2px;
  background: var(--accent-hex);
  box-shadow: 0 0 6px var(--accent-hex);
  animation: scroll-wheel 1.8s ease-in-out infinite;
}

@keyframes scroll-wheel {
  0%   { opacity: 1; transform: translateY(0); }
  60%  { opacity: 0; transform: translateY(12px); }
  100% { opacity: 0; transform: translateY(12px); }
}

@keyframes mouse-glow {
  0%, 100% { box-shadow: 0 0 8px var(--accent-30), 0 0 20px var(--accent-18), inset 0 0 8px var(--accent-10); }
  50%      { box-shadow: 0 0 14px var(--accent-50), 0 0 32px var(--accent-30), inset 0 0 12px var(--accent-18); }
}

/* ===== KEYFRAMES ===== */
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}