/* ═══════════════════════════════════════
   animations.css — Boot Screen, Transitions, Effects
   ═══════════════════════════════════════ */

/* ── BOOT SCREEN ── */
#boot-screen {
  position: fixed;
  inset: 0;
  background: #000;
  z-index: 99999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  transition: opacity 0.6s ease;
}

.boot-logo {
  font-family: var(--font-retro);
  font-size: 56px;
  color: #0078d7;
  text-shadow: 0 0 30px #0078d7, 0 0 60px rgba(0,120,215,0.4);
  animation: pulse-glow 2s ease-in-out infinite;
}

.boot-sub {
  color: #aaa;
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: 1px;
}

#boot-progress {
  width: 320px;
  height: 22px;
  border: 2px solid #444;
  background: #111;
  overflow: hidden;
}

#boot-progress-bar {
  height: 100%;
  width: 0%;
  background: repeating-linear-gradient(
    90deg,
    #0078d7 0px,  #005fa3 10px,
    #0078d7 10px, #0078d7 20px
  );
  transition: width 0.3s ease;
}

#boot-text {
  color: #0f0;
  font-family: var(--font-mono);
  font-size: 12px;
  height: 18px;
  letter-spacing: 0.5px;
}

/* ── KEYFRAMES ── */
@keyframes pulse-glow {
  0%, 100% { text-shadow: 0 0 20px #0078d7, 0 0 40px rgba(0,120,215,0.3); }
  50%       { text-shadow: 0 0 40px #0078d7, 0 0 80px rgba(0,120,215,0.6); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

@keyframes scanline {
  0%   { background-position: 0 0; }
  100% { background-position: 0 100%; }
}

@keyframes window-open {
  from { transform: scale(0.85); opacity: 0; }
  to   { transform: scale(1);    opacity: 1; }
}

/* ── WINDOW OPEN ANIMATION ── */
.window.visible {
  animation: window-open 0.15s ease-out forwards;
}

/* ── CURSOR BLINK for boot text ── */
.cursor-blink::after {
  content: '_';
  animation: blink 0.8s step-end infinite;
}

/* ── HOVER EFFECTS ── */
.icon {
  transition: background 0.1s, border-color 0.1s;
}

.win-btn {
  transition: border-color 0.05s;
}

.start-item {
  transition: background 0.08s, color 0.08s;
}

.taskbar-btn {
  transition: background 0.05s;
}

/* ── PROGRESS BAR SHIMMER ── */
.progress-bar-fill {
  background-size: 200% 100%;
  animation: shimmer 2s linear infinite;
}

@keyframes shimmer {
  0%   { background-position: -100% 0; }
  100% { background-position:  100% 0; }
}

/* ── DESKTOP ICON SELECTION ── */
.icon.active {
  animation: none;
  background: rgba(0, 0, 128, 0.3);
}

/* ── SCANLINES overlay on boot ── */
#boot-screen::after {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 2px,
    rgba(0,0,0,0.15) 2px,
    rgba(0,0,0,0.15) 4px
  );
  pointer-events: none;
}