/* ==========================================================================
   Boot Animation Styles — macOS Startup Sequence
   Phase 1: Name Logo (Apple boot style)
   Phase 2: Frosted Cursive "Hello" Animation
   ========================================================================== */

/* ── Boot Overlay Container ── */
.boot-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: 99999;
    background: #000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.boot-overlay.fade-out {
    opacity: 0;
    pointer-events: none;
}

.boot-overlay.hidden {
    display: none;
}

/* ── Phase 1: Name Logo ──────────────────────────────────────────────────
   The name fades in quickly on its own visual clock (this is just a snappy
   logo entrance, no audio involved yet). The chime itself doesn't play here
   — js/core/boot-animation.js fires it once the loading bar finishes (or
   immediately on skip), and pairs it with the .glowing/.chime-beat classes
   at that exact moment, so the "beat" below is what's actually synced to
   the sound, not this entrance. */
.boot-name-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
    opacity: 0;
    animation: bootNameFadeIn 0.45s cubic-bezier(0.22, 1, 0.36, 1) 0.06s forwards;
}

.boot-name {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 42px;
    font-weight: 200;
    letter-spacing: 4px;
    color: #f5f5f7;
    text-align: center;
    user-select: none;
    text-shadow: 0 0 60px rgba(255, 255, 255, 0.15);
    transform: scale(1);
}

/* Subtle glow pulse on the name */
@keyframes bootNameGlow {
    0%, 100% { text-shadow: 0 0 40px rgba(255, 255, 255, 0.08); }
    50% { text-shadow: 0 0 80px rgba(255, 255, 255, 0.22); }
}

.boot-name.glowing {
    animation: bootNameGlow 2s ease-in-out infinite;
}

/* One-shot "beat" — a soft scale pulse fired the instant the glow begins,
   giving the sync moment a felt tick even for visitors whose browser
   blocked the chime's audio (the visual reads as intentional either way). */
@keyframes bootNameBeat {
    0%   { transform: scale(1); }
    35%  { transform: scale(1.035); }
    100% { transform: scale(1); }
}

.boot-name.chime-beat {
    animation: bootNameGlow 2s ease-in-out infinite, bootNameBeat 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

/* ── Progress Bar ── */
.boot-progress-container {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 2px;
    overflow: hidden;
}

.boot-progress-bar {
    width: 0%;
    height: 100%;
    background: #f5f5f7;
    border-radius: 2px;
    /* No transition declared here on purpose — boot-animation.js sets the
       full-duration one at runtime. A short transition here would win the
       cascade order fight only by accident and make the fill stutter. */
}

@keyframes bootNameFadeIn {
    0% { opacity: 0; transform: scale(0.96); }
    100% { opacity: 1; transform: scale(1); }
}

/* ── Phase 2: Apple's handwritten "hello" ───────────────────────────────
   A single continuous stroke, drawn on rather than faded in. The previous
   version was a rainbow-gradient text element cycling through languages,
   which reads as generic web-flourish; Apple's actual intro is one white
   cursive stroke being written. */
.boot-hello-container {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    background: #000;
    transition: opacity 0.35s ease;
}

.boot-hello-container.active {
    opacity: 1;
    pointer-events: auto;
}

.boot-hello-svg {
    width: min(62vw, 780px);
    overflow: visible;
}

#boot-hello-path {
    fill: none;
    stroke: #f5f5f7;
    stroke-width: 12;
    stroke-linecap: round;
    stroke-linejoin: round;
    /* pathLength="1" on the element normalises these to 0..1 progress. */
    stroke-dasharray: 1;
    stroke-dashoffset: 1;
    filter: drop-shadow(0 0 26px rgba(255, 255, 255, 0.28));
}

.boot-hello-container.writing #boot-hello-path {
    animation: helloWrite 2.2s cubic-bezier(0.55, 0.06, 0.3, 0.96) forwards;
}

@keyframes helloWrite {
    from { stroke-dashoffset: 1; }
    to   { stroke-dashoffset: 0; }
}

/* Whatever happened to the animation, the finished stroke must be fully
   drawn by the time we settle — otherwise a tab that was backgrounded
   during Phase 2 shows an empty screen. */
.boot-hello-container.settled #boot-hello-path {
    stroke-dashoffset: 0;
}

/* Gentle settle once the stroke completes. */
.boot-hello-container.settled .boot-hello-svg {
    animation: helloSettle 0.7s ease forwards;
}

@keyframes helloSettle {
    0%   { transform: scale(1); }
    100% { transform: scale(1.02); }
}

/* ── Power-on gate (shown only when audio autoplay is blocked) ────────── */
.boot-power-gate {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: 5;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000;
    opacity: 0;
    pointer-events: none;
    cursor: pointer;
    transition: opacity 0.45s ease;
}

.boot-power-gate.visible {
    opacity: 1;
    pointer-events: auto;
}

.boot-power-gate.dismissed {
    opacity: 0;
    pointer-events: none;
}

.boot-power-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    animation: powerGateIn 0.7s ease both;
}

@keyframes powerGateIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: none; }
}

.boot-power-logo {
    width: 62px;
    height: 62px;
    color: #f5f5f7;
    animation: powerLogoPulse 2.4s ease-in-out infinite;
}

@keyframes powerLogoPulse {
    0%, 100% { opacity: 0.82; filter: drop-shadow(0 0 16px rgba(255,255,255,0.12)); }
    50%      { opacity: 1;    filter: drop-shadow(0 0 30px rgba(255,255,255,0.30)); }
}

.boot-power-label {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 15px;
    font-weight: 400;
    letter-spacing: 0.4px;
    color: #f5f5f7;
}

.boot-power-sub {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 12px;
    font-weight: 300;
    color: rgba(245, 245, 247, 0.5);
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .boot-name {
        font-size: 28px;
        letter-spacing: 2px;
    }

    .boot-progress-container {
        width: 140px;
    }

    .boot-hello-svg {
        width: 78vw;
    }
}

@media (prefers-reduced-motion: reduce) {
    .boot-hello-container.writing #boot-hello-path { animation: none; stroke-dashoffset: 0; }
    .boot-power-logo { animation: none; }
}