/* ============================================================
   Portfolio Player — Unified Reel / Filtered Playlist
   v1.4.0 — iOS Safari performance pass
   ============================================================ */

/*
 * PERF: Self-host fonts rather than loading from Google Fonts.
 * The Google Fonts request is a cross-origin round-trip that blocks
 * rendering on slow connections. Download Inter from
 * https://fonts.google.com/specimen/Inter and serve locally, or
 * swap the import for whatever font your theme already loads.
 *
 * If you keep the Google Fonts import, add &display=swap so the
 * page text renders immediately in the fallback font while Inter loads.
 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

/* ── Variables ─────────────────────────────────────────────── */
.pp-wrap {
    --pp-bg:        #0b0d10;
    --pp-surface:   #11151a;
    --pp-surface-2: #151b22;
    --pp-surface-3: #0f1318;

    --pp-text-primary:   #e8eaed;
    --pp-text-secondary: #a1abb5;
    --pp-text-muted:     #6d7884;

    --pp-accent:        #7aa6b8;
    --pp-accent-dim:    rgba(122,166,184,0.12);
    --pp-accent-strong: rgba(122,166,184,0.2);
    --pp-accent-glow:   rgba(122,166,184,0.08);

    --pp-radius:    18px;
    --pp-radius-sm: 9px;

    font-family: 'Inter', sans-serif;
    position: relative;
    max-width: 980px;
    margin: 3rem auto;
    border-radius: var(--pp-radius);
    overflow: hidden;
    background: var(--pp-bg);
    color: var(--pp-text-primary);

    /*
     * PERF: Removed box-shadow from .pp-wrap itself.
     * A large spread box-shadow (0 24px 60px) forces the browser to
     * repaint a huge area every time anything inside the player changes.
     * On iOS Safari this causes dropped frames during waveform updates.
     * The visual is preserved by the ::after pseudo-element which is
     * on its own composited layer (via transform) and doesn't trigger
     * main-thread repaints.
     *
     * PERF: contain:layout style prevents the player's internal layout
     * changes (track highlighting, time display updates) from triggering
     * reflows in the rest of the page.
     */
    contain: layout style;
}

.pp-wrap,
.pp-wrap * {
    box-sizing: border-box;
}

/*
 * PERF: Subtle gradient border via pseudo-element — kept as-is.
 * It's a static paint so it doesn't affect animation performance.
 */
.pp-wrap::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(
        145deg,
        rgba(255,255,255,0.15),
        rgba(255,255,255,0.02) 28%,
        rgba(122,166,184,0.08) 55%,
        rgba(255,255,255,0.03) 78%,
        rgba(255,255,255,0.1)
    );
    -webkit-mask:
        linear-gradient(#000 0 0) content-box,
        linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    /* Prevent this pseudo from participating in any compositing */
    will-change: auto;
}

/*
 * PERF: The ambient glow is on its own composited layer via translate3d.
 * This keeps it off the main render thread.
 */
.pp-wrap::after {
    content: '';
    position: absolute;
    inset: -22px;
    background: radial-gradient(
        ellipse at top center,
        rgba(122,166,184,0.08),
        transparent 72%
    );
    z-index: -1;
    pointer-events: none;
    transform: translate3d(0,0,0);
}

/* ── Top bar / filter strip ─────────────────────────────────── */
.pp-topbar {
    padding: 18px 22px 10px;
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

.pp-filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.pp-filter-btn {
    appearance: none;
    border: 1px solid rgba(255,255,255,0.08);
    background: rgba(255,255,255,0.035);
    color: var(--pp-text-secondary);
    border-radius: 999px;
    padding: 9px 14px;
    font: inherit;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.11em;
    text-transform: uppercase;
    cursor: pointer;
    /*
     * PERF: Removed transform: translateY(-1px) on hover.
     * Any transform on a non-composited element triggers a repaint + 
     * composite on iOS. The visual effect isn't worth the jank cost.
     * Color/background/border transitions are cheap (no layout).
     */
    transition:
        color 160ms ease,
        border-color 160ms ease,
        background 160ms ease;
    /* Prevent tap highlight flash on iOS */
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.pp-filter-btn:hover {
    color: var(--pp-text-primary);
    background: rgba(255,255,255,0.06);
    border-color: rgba(255,255,255,0.13);
}

.pp-filter-btn.active {
    color: var(--pp-accent);
    background: var(--pp-accent-dim);
    border-color: rgba(122,166,184,0.45);
    box-shadow: inset 0 0 0 1px rgba(122,166,184,0.12);
}

/* ── Video area ─────────────────────────────────────────────── */
.pp-video-area {
    position: relative;
    aspect-ratio: 16 / 9;
    background: #000;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    /* PERF: Isolate video compositing from the rest of the player */
    isolation: isolate;
}

.pp-video-area[hidden] {
    display: none !important;
}

.pp-video-el,
.pp-video-embed {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.pp-video-el {
    object-fit: contain;
    background: #000;
}

.pp-video-placeholder {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    align-content: center;
    gap: 12px;
    color: var(--pp-text-muted);
    text-align: center;
    pointer-events: none;
}

.pp-video-play-circle {
    width: 62px;
    height: 62px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    border: 1px solid rgba(255,255,255,0.18);
    color: var(--pp-accent);
    background: rgba(255,255,255,0.03);
}

.pp-video-play-circle svg {
    width: 26px;
    height: 26px;
    display: block;
}

.pp-video-hint {
    margin: 0;
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

/* ── Transport bar ──────────────────────────────────────────── */
.pp-transport {
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr) 90px 24px;
    align-items: center;
    gap: 18px;
    padding: 16px 22px 18px;
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

/* ── Play button ────────────────────────────────────────────── */
.pp-play-btn,
.pp-vol-btn {
    appearance: none;
    font: inherit;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.pp-play-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.14);
    background: rgba(255,255,255,0.02);
    color: var(--pp-accent);
    display: grid;
    place-items: center;
    padding: 0;
    /*
     * PERF: Removed transform from hover state — same reasoning as
     * filter buttons above. Box-shadow transition is cheap.
     */
    transition:
        background 160ms ease,
        border-color 160ms ease,
        box-shadow 160ms ease;
}

.pp-play-btn:hover {
    background: var(--pp-accent-dim);
    border-color: rgba(122,166,184,0.4);
    box-shadow: 0 0 18px var(--pp-accent-glow);
}

.pp-play-btn.is-disabled,
.pp-vol-btn.is-disabled {
    opacity: 0.35;
    cursor: default;
    pointer-events: none;
}

.pp-play-btn svg {
    width: 18px;
    height: 18px;
    display: block;
    fill: currentColor;
    flex: 0 0 auto;
}

.pp-icon-play  { margin-left: 2px; }
.pp-icon-pause { display: none; }

/* ── Waveform ───────────────────────────────────────────────── */
.pp-waveform-wrap {
    position: relative;
    min-width: 0;
    height: 52px;
    border-radius: var(--pp-radius-sm);
    overflow: hidden;
    background: var(--pp-surface-3);
    border: 1px solid rgba(255,255,255,0.04);
    cursor: pointer;
    /*
     * PERF: Promote the waveform canvas to its own GPU layer.
     * WaveSurfer redraws the canvas on every timeupdate event.
     * Without promotion this triggers a full compositing pass that
     * includes the surrounding UI. With will-change: transform the
     * canvas sits on an isolated layer — redraws stay contained.
     *
     * Using transform: translateZ(0) as the promotion trigger because
     * will-change alone doesn't guarantee layer creation on older iOS.
     */
    transform: translateZ(0);
    will-change: transform;
}

.pp-wave-canvas {
    width: 100%;
    height: 52px;
    display: block;
}

.pp-wave-overlay {
    position: absolute;
    inset: 0;
    display: none;
    place-items: center;
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--pp-text-muted);
    pointer-events: none;
}

.pp-wave-overlay.visible {
    display: grid;
}

.pp-waveform-wrap.is-video .pp-wave-canvas {
    opacity: 0.08;
}

/* ── Time display ───────────────────────────────────────────── */
.pp-time {
    font-size: 11px;
    color: var(--pp-text-secondary);
    text-align: right;
    /*
     * PERF: tabular-nums prevents the time string width from changing
     * as digits change — avoids a layout reflow every second.
     */
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.03em;
    /* Prevent the time string width from triggering grid relayout */
    min-width: 90px;
}

/* ── Volume button ──────────────────────────────────────────── */
.pp-vol-btn {
    background: transparent;
    border: none;
    color: var(--pp-text-secondary);
    display: grid;
    place-items: center;
    padding: 0;
    transition: color 160ms ease, opacity 160ms ease;
}

.pp-vol-btn:hover  { color: var(--pp-accent); }
.pp-vol-btn.muted  { color: var(--pp-text-muted); }

.pp-vol-btn svg {
    width: 18px;
    height: 18px;
    display: block;
    fill: currentColor;
}

/* ── Track list ─────────────────────────────────────────────── */
.pp-track-list {
    padding: 10px 0 12px;
}

.pp-track {
    width: 100%;
    appearance: none;
    border: none;
    background: transparent;
    color: inherit;
    display: grid;
    grid-template-columns: 28px minmax(0, 1fr) auto;
    align-items: center;
    gap: 12px;
    padding: 14px 22px;
    text-align: left;
    cursor: pointer;
    position: relative;
    /*
     * PERF: Only animate background — not all properties.
     * 'transition: all' is a common performance trap; it forces the
     * browser to check every animatable property on every frame.
     */
    transition: background 160ms ease;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.pp-track:hover {
    background: rgba(255,255,255,0.03);
}

.pp-track.pp-active {
    background: rgba(122,166,184,0.08);
}

.pp-track.pp-active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 20%;
    bottom: 20%;
    width: 2px;
    background: linear-gradient(to bottom, transparent, var(--pp-accent), transparent);
}

/* ── Track row content ──────────────────────────────────────── */
.pp-track-num {
    font-size: 11px;
    color: var(--pp-text-muted);
    font-variant-numeric: tabular-nums;
    text-align: right;
}

.pp-track-info   { min-width: 0; }

.pp-track-topline {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.pp-track-name {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 15px;
    font-weight: 500;
    color: var(--pp-text-primary);
    transition: color 160ms ease;
}

.pp-track.pp-active .pp-track-name {
    color: var(--pp-accent);
}

.pp-track-badge {
    flex: 0 0 auto;
    border-radius: 999px;
    padding: 2px 7px;
    font-size: 9px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--pp-text-secondary);
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.06);
}

.pp-track-genre {
    display: block;
    margin-top: 3px;
    font-size: 11px;
    color: var(--pp-text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.pp-track-dur {
    font-size: 11px;
    color: var(--pp-text-muted);
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.03em;
    margin-left: 12px;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 720px) {
    .pp-wrap { margin: 1.5rem auto; }

    .pp-transport {
        grid-template-columns: 44px minmax(0, 1fr) 74px 20px;
        gap: 12px;
        padding: 14px 16px 16px;
    }

    .pp-topbar { padding: 14px 16px 8px; }
    .pp-track  { padding: 12px 16px; }
}

@media (max-width: 560px) {
    .pp-transport {
        grid-template-columns: 44px minmax(0, 1fr);
        grid-template-areas:
            "play time"
            "wave wave";
        row-gap: 10px;
    }

    .pp-play-btn    { grid-area: play; }
    .pp-time        { grid-area: time; justify-self: end; }
    .pp-waveform-wrap { grid-area: wave; }
    .pp-vol-btn     { display: none; }

    .pp-track {
        grid-template-columns: 24px minmax(0, 1fr) auto;
        gap: 10px;
    }

    .pp-track-badge { display: none; }
}