/* =====================================================================
 * TNM Gallery — Custom Pop-up Slider (v1.0.2)
 *
 * Replaces PhotoSwipe with a hand-rolled slider. Smaller, brand-controllable,
 * zero external deps.
 *
 * Theme variable contract (set inline via lightbox.php):
 *   --tnm-gallery-accent     brand accent color (focus rings, active states)
 *   --tnm-slider-bg-dark     default 'rgba(8, 8, 8, 0.95)'
 *   --tnm-slider-bg-light    used by light theme variant
 * ===================================================================== */

/* Lock body scroll when slider is open */
body.tnm-slider-open {
    overflow: hidden;
    /* Reserve scrollbar gutter so the page doesn't jump */
    padding-right: var(--tnm-slider-scrollbar-pad, 0px);
}

.tnm-slider {
    position: fixed;
    inset: 0;
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(8, 8, 8, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    opacity: 0;
    transition: opacity 0.28s ease;
    cursor: zoom-out;
}

.tnm-slider[hidden] { display: none; }
.tnm-slider.is-open { opacity: 1; }

/* Light theme variant (when [data-pswp-theme="light"] passed through tnmGalleryConfig — kept for parity) */
.tnm-slider[data-theme="light"] {
    background: rgba(245, 245, 245, 0.96);
}
.tnm-slider[data-theme="light"] .tnm-slider-caption,
.tnm-slider[data-theme="light"] .tnm-slider-counter { color: #1a1a1a; }
.tnm-slider[data-theme="light"] .tnm-slider-close,
.tnm-slider[data-theme="light"] .tnm-slider-prev,
.tnm-slider[data-theme="light"] .tnm-slider-next { color: #1a1a1a; background: rgba(0,0,0,0.08); }

/* Luxury theme variant — gold accents on near-black */
.tnm-slider[data-theme="luxury"] {
    background: rgba(12, 12, 12, 0.96);
}
.tnm-slider[data-theme="luxury"] .tnm-slider-caption,
.tnm-slider[data-theme="luxury"] .tnm-slider-counter { color: var(--tnm-gallery-accent, #c9a063); letter-spacing: 0.06em; }

/* ---------- Stage (image + caption) ---------- */

.tnm-slider-stage {
    position: relative;
    max-width: min(92vw, 1600px);
    max-height: 92vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: default;
}

.tnm-slider-imgwrap {
    position: relative;
    max-height: 82vh;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.18s ease;
}

.tnm-slider-imgwrap.is-loading { opacity: 0.35; }
.tnm-slider-imgwrap.is-loading .tnm-slider-spinner { opacity: 1; }

.tnm-slider-image {
    max-width: 100%;
    max-height: 82vh;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
    display: block;
    background: #1a1a1a;
}

.tnm-slider-spinner {
    position: absolute;
    width: 38px;
    height: 38px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--tnm-gallery-accent, #c9a063);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.18s ease;
    animation: tnm-slider-spin 0.8s linear infinite;
}

@keyframes tnm-slider-spin {
    to { transform: rotate(360deg); }
}

.tnm-slider-caption {
    margin-top: 18px;
    color: #fff;
    font-size: 14px;
    line-height: 1.5;
    text-align: center;
    letter-spacing: 0.02em;
    max-width: 80%;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
}

/* ---------- Controls ---------- */

.tnm-slider-close,
.tnm-slider-prev,
.tnm-slider-next {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border: 0;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    padding: 0;
    transition: background 0.2s ease, transform 0.25s ease, color 0.2s ease;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.tnm-slider-close:focus-visible,
.tnm-slider-prev:focus-visible,
.tnm-slider-next:focus-visible {
    outline: 2px solid var(--tnm-gallery-accent, #c9a063);
    outline-offset: 2px;
}

/* Close — top-right circle */
.tnm-slider-close {
    top: 22px;
    right: 22px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
}
.tnm-slider-close:hover {
    background: rgba(255, 255, 255, 0.22);
    transform: rotate(90deg);
}

/* Prev / Next — vertical center */
.tnm-slider-prev,
.tnm-slider-next {
    top: 50%;
    transform: translateY(-50%);
    width: 56px;
    height: 56px;
    border-radius: 50%;
}

.tnm-slider-prev { left: 28px; }
.tnm-slider-next { right: 28px; }

.tnm-slider-prev:hover,
.tnm-slider-next:hover {
    background: var(--tnm-gallery-accent, #c9a063);
    color: #fff;
}

/* Counter — bottom center pill */
.tnm-slider-counter {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    color: #fff;
    font-size: 13px;
    letter-spacing: 0.1em;
    background: rgba(0, 0, 0, 0.45);
    padding: 6px 16px;
    border-radius: 100px;
    font-variant-numeric: tabular-nums;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.tnm-slider-current,
.tnm-slider-total { font-weight: 600; }

/* ---------- Responsive ---------- */

@media (max-width: 768px) {
    .tnm-slider-close,
    .tnm-slider-prev,
    .tnm-slider-next {
        width: 44px;
        height: 44px;
    }
    .tnm-slider-close { top: 12px; right: 12px; }
    .tnm-slider-prev  { left: 8px; }
    .tnm-slider-next  { right: 8px; }

    .tnm-slider-stage    { max-width: 96vw; }
    .tnm-slider-imgwrap,
    .tnm-slider-image    { max-height: 75vh; }

    .tnm-slider-caption  { font-size: 12px; max-width: 90%; margin-top: 12px; }
    .tnm-slider-counter  { bottom: 14px; font-size: 12px; }
}

@media (max-width: 480px) {
    .tnm-slider-image,
    .tnm-slider-imgwrap { max-height: 70vh; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .tnm-slider,
    .tnm-slider-imgwrap,
    .tnm-slider-close,
    .tnm-slider-prev,
    .tnm-slider-next { transition: none; }
    .tnm-slider-close:hover { transform: none; }
    .tnm-slider-spinner { animation-duration: 2s; }
}