/* ── School Events Gallery v2 – Front-end Styles ── */
@import url('https://fonts.googleapis.com/css2?family=Baloo+2:wght@500;600;700&family=Hind:wght@400;500&display=swap');

/* ── Root Variables ── */
.seg-gallery-wrap {
    font-family: 'Hind', sans-serif;
    --seg-primary:   #1a3a5c;
    --seg-accent:    #f0a500;
    --seg-radius:    12px;
    --seg-gap:       16px;
    --seg-cols:      3;
    --seg-cols-tab:  2;
    --seg-cols-mob:  1;
    --seg-ratio:     4/3;
    --seg-transition: .3s cubic-bezier(.4,0,.2,1);
}

/* ═══════════════════════════════════════════════
   FILTER TABS
═══════════════════════════════════════════════ */
.seg-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 28px;
    padding: 16px 20px;
    background: #f3f6fb;
    border-radius: 18px;
    border: 2px solid #e4eaf3;
}

.seg-tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 20px;
    border: 2px solid #d0d9e8;
    border-radius: 50px;
    background: #fff;
    color: #334155;
    font-family: 'Baloo 2', sans-serif;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all .22s ease;
    outline: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.seg-tab::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--seg-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .25s ease;
    z-index: 0;
    border-radius: inherit;
}

.seg-tab:hover {
    border-color: var(--seg-primary);
    color: var(--seg-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(26,58,92,.15);
}

.seg-tab.active {
    background: var(--seg-primary);
    color: #fff;
    border-color: var(--seg-primary);
    box-shadow: 0 6px 22px rgba(26,58,92,.28);
    transform: translateY(-3px);
}

.seg-tab-icon {
    font-size: 17px;
    position: relative;
    z-index: 1;
}
.seg-tab > *:not(.seg-tab-icon) { position: relative; z-index: 1; }

.seg-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 20px;
    padding: 0 5px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    line-height: 1;
    transition: background .22s;
}

.seg-tab:not(.active) .seg-count {
    background: #e4eaf3;
    color: #334155;
}
.seg-tab.active .seg-count {
    background: rgba(255,255,255,.22);
    color: #fff;
}

/* ═══════════════════════════════════════════════
   IMAGE GRID
═══════════════════════════════════════════════ */
.seg-grid {
    display: grid;
    grid-template-columns: repeat(var(--seg-cols), 1fr);
    gap: var(--seg-gap);
}

/* ── Individual item ── */
.seg-item {
    transition: opacity var(--seg-transition), transform var(--seg-transition);
}

.seg-item.seg-hidden {
    display: none;
}

.seg-item.seg-fade-in {
    animation: segFadeIn .38s ease forwards;
}

@keyframes segFadeIn {
    from { opacity: 0; transform: scale(.9) translateY(10px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* ── Card ── */
.seg-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--seg-radius);
    aspect-ratio: var(--seg-ratio);
    cursor: pointer;
    box-shadow: 0 4px 18px rgba(0,0,0,.1);
    background: #dde4f0;
    display: block;
}

.seg-card:focus-visible {
    outline: 3px solid var(--seg-accent);
    outline-offset: 3px;
}

.seg-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform .5s cubic-bezier(.25,.46,.45,.94);
    will-change: transform;
}

.seg-card:hover img,
.seg-card:focus-visible img {
    transform: scale(1.09);
}

/* ── Hover overlay ── */
.seg-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10,20,40,.75) 0%, transparent 55%);
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    padding: 14px 16px;
    opacity: 0;
    transition: opacity .28s ease;
}

.seg-card:hover .seg-overlay,
.seg-card:focus-visible .seg-overlay {
    opacity: 1;
}

.seg-event-name {
    color: #fff;
    font-family: 'Baloo 2', sans-serif;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.3;
    text-shadow: 0 1px 6px rgba(0,0,0,.6);
}

.seg-zoom {
    color: #fff;
    font-size: 20px;
    line-height: 1;
    transition: transform .2s;
    flex-shrink: 0;
}

.seg-card:hover .seg-zoom { transform: scale(1.3) rotate(-5deg); }

/* ═══════════════════════════════════════════════
   LIGHTBOX
═══════════════════════════════════════════════ */
.seg-lightbox {
    position: fixed;
    inset: 0;
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.seg-lightbox[hidden] { display: none; }

.seg-lb-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(4,10,22,.93);
    backdrop-filter: blur(8px);
    animation: segLbBgIn .25s ease;
}

@keyframes segLbBgIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.seg-lb-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    max-width: 90vw;
    max-height: 90vh;
}

.seg-lb-content img {
    max-width: 90vw;
    max-height: 80vh;
    border-radius: 10px;
    box-shadow: 0 24px 80px rgba(0,0,0,.6);
    display: block;
    animation: segLbImgIn .3s ease;
}

@keyframes segLbImgIn {
    from { opacity: 0; transform: scale(.88); }
    to   { opacity: 1; transform: scale(1); }
}

.seg-lb-caption {
    color: rgba(255,255,255,.85);
    font-family: 'Baloo 2', sans-serif;
    font-size: 15px;
    font-weight: 500;
    text-align: center;
    text-shadow: 0 1px 4px rgba(0,0,0,.5);
}

.seg-lb-counter {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    color: rgba(255,255,255,.6);
    font-size: 13px;
    font-family: 'Hind', sans-serif;
    letter-spacing: .5px;
}

/* ── Nav buttons ── */
.seg-lb-close,
.seg-lb-prev,
.seg-lb-next {
    position: fixed;
    z-index: 3;
    background: rgba(255,255,255,.1);
    border: 1.5px solid rgba(255,255,255,.18);
    color: #fff;
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    transition: background .2s, transform .2s, border-color .2s;
    backdrop-filter: blur(4px);
}

.seg-lb-close {
    top: 20px; right: 24px;
    width: 46px; height: 46px;
    font-size: 18px;
}

.seg-lb-prev,
.seg-lb-next {
    top: 50%;
    transform: translateY(-50%);
    width: 54px; height: 54px;
    font-size: 32px;
    padding-bottom: 2px;
}

.seg-lb-prev { left: 20px; }
.seg-lb-next { right: 20px; }

.seg-lb-close:hover  {
    background: rgba(231,76,60,.85);
    border-color: transparent;
}

.seg-lb-prev:hover,
.seg-lb-next:hover {
    background: rgba(255,255,255,.22);
    border-color: rgba(255,255,255,.4);
}

.seg-lb-prev:hover { transform: translateY(-50%) translateX(-3px); }
.seg-lb-next:hover { transform: translateY(-50%) translateX(3px); }

/* ═══════════════════════════════════════════════
   EDITOR EMPTY STATE
═══════════════════════════════════════════════ */
.seg-empty-editor {
    text-align: center;
    padding: 48px 24px;
    border: 2px dashed #c8d6e8;
    border-radius: 16px;
    color: #64748b;
    background: #f8fafc;
}

.seg-empty-editor span {
    display: block;
    font-size: 48px;
    margin-bottom: 12px;
}

.seg-empty-editor p {
    font-size: 15px;
    line-height: 1.6;
    max-width: 360px;
    margin: 0 auto;
}

/* ═══════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════ */
@media (max-width: 1024px) {
    .seg-grid { grid-template-columns: repeat(var(--seg-cols-tab), 1fr); }
}

@media (max-width: 640px) {
    .seg-grid { grid-template-columns: repeat(var(--seg-cols-mob), 1fr); }
    .seg-tabs { gap: 6px; padding: 10px 12px; }
    .seg-tab  { font-size: 12px; padding: 7px 14px; }
    .seg-lb-prev { left: 8px; width: 42px; height: 42px; font-size: 24px; }
    .seg-lb-next { right: 8px; width: 42px; height: 42px; font-size: 24px; }
    .seg-lb-close { top: 10px; right: 10px; width: 38px; height: 38px; font-size: 16px; }
}