/* ==========================================================================
   Moonweft Media Gallery - Neocities Retro + Sonic Highlights Vibe
   ========================================================================== */

:root {
    --bg-paper: #f7f6f0;
    --card-bg: #ffffff;
    --text-main: #1a1a1e;
    --text-muted: #666670;
    --border-dark: #222225;
    
    --sonic-red: #e62020;
    --sonic-gold: #f5b000;
    --sonic-blue: #1e40af;
    --win-blue: #1d3557;
    
    --font-ui: 'Inter', -apple-system, sans-serif;
    --font-pixel: 'VT323', monospace;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    background-color: var(--bg-paper);
    background-image: 
        linear-gradient(rgba(0, 0, 0, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.04) 1px, transparent 1px);
    background-size: 20px 20px;
    min-height: 100vh;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--text-main);
    font-family: var(--font-ui);
    line-height: 1.4;
    position: relative;
}

body.modal-open {
    overflow: hidden;
}

body.retro-body {
    background-color: transparent;
    color: var(--text-main);
    font-family: var(--font-ui);
    line-height: 1.4;
    padding-bottom: 4rem;
    position: relative;
}

.bg-ring-accent {
    position: fixed;
    top: -100px;
    right: -100px;
    width: 350px;
    height: 350px;
    border: 12px solid rgba(245, 176, 0, 0.08);
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
}

/* --- Top Nav --- */
.sg-nav {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: #e2e0d8;
    border-bottom: 2px solid var(--border-dark);
    position: sticky;
    top: 0;
    z-index: 100;
}

.sg-nav::before {
    content: '';
    position: absolute;
    top: -100vh;
    left: 0;
    right: 0;
    height: 100vh;
    background: #e2e0d8;
    pointer-events: none;
}

.nav-tab {
    text-decoration: none;
    padding: 0.35rem 0.85rem;
    font-family: var(--font-pixel);
    font-size: 1.25rem;
    color: var(--text-main);
    background: #f0eee6;
    border: 2px solid var(--border-dark);
    box-shadow: 2px 2px 0px var(--border-dark);
    transition: all 0.15s ease;
}

.nav-tab:hover {
    background: #ffffff;
    transform: translate(-1px, -1px);
    box-shadow: 3px 3px 0px var(--border-dark);
}

.nav-tab.active {
    background: var(--sonic-red);
    color: #ffffff;
    box-shadow: none;
    transform: translate(1px, 1px);
}

/* --- Page Header --- */
.page-header {
    text-align: center;
    padding: 2.5rem 1rem 1.5rem;
    position: relative;
    z-index: 1;
}

.banner-badge {
    display: inline-block;
    font-family: var(--font-pixel);
    font-size: 1.1rem;
    background: var(--border-dark);
    color: var(--sonic-gold);
    padding: 0.2rem 0.75rem;
    margin-bottom: 0.5rem;
    border-radius: 2px;
}

.gold-ring-icon {
    color: var(--sonic-gold);
    margin-right: 0.3rem;
}

.page-header h1 {
    font-family: var(--font-pixel);
    font-size: 3rem;
    letter-spacing: 0.05em;
    color: var(--text-main);
    text-shadow: 2px 2px 0px rgba(0, 0, 0, 0.1);
    margin-bottom: 0.2rem;
}

.page-header .subtitle {
    font-family: var(--font-pixel);
    font-size: 1.15rem;
    color: var(--text-muted);
}

/* --- Main Layout --- */
.gallery-container {
    max-width: 1250px;
    margin: 1.5rem auto 0;
    padding: 0 1.5rem;
    display: flex;
    gap: 2rem;
    position: relative;
    z-index: 1;
}

/* --- Neocities Windows OS Box Component --- */
.win-box {
    background: var(--card-bg);
    border: 2px solid var(--border-dark);
    box-shadow: 4px 4px 0px var(--border-dark);
}

.win-title-bar {
    background: var(--win-blue);
    color: #ffffff;
    padding: 0.3rem 0.6rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--border-dark);
}

.win-title {
    font-family: var(--font-pixel);
    font-size: 1.15rem;
    letter-spacing: 0.05em;
}

.back-to-top-btn {
    position: fixed;
    bottom: 1.75rem;
    right: 1.75rem;
    width: 3rem;
    height: 3rem;
    background: var(--sonic-gold);
    color: var(--border-dark);
    border: 2px solid var(--border-dark);
    box-shadow: 3px 3px 0px var(--border-dark);
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: var(--font-pixel);
    font-size: 1.4rem;
    z-index: 500;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease, background 0.15s ease;
}

.back-to-top-btn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top-btn:hover {
    background: #ffffff;
    transform: translate(-1px, -1px);
    box-shadow: 4px 4px 0px var(--border-dark);
}

.back-to-top-btn:active {
    transform: translate(1px, 1px);
    box-shadow: none;
}

.back-to-top-btn .arrow-up {
    line-height: 1;
}

@media (max-width: 768px) {
    .back-to-top-btn {
        bottom: 1.25rem;
        right: 1.25rem;
        width: 2.75rem;
        height: 2.75rem;
    }
}

/* --- Timeline Sidebar --- */
.timeline-sidebar {
    width: 210px;
    flex-shrink: 0;
    align-self: flex-start;
    position: sticky;
    top: 4.5rem;
    max-height: calc(100vh - 6rem);
    display: flex;
    flex-direction: column;
}

.timeline-sidebar .win-content {
    padding: 0.5rem;
    overflow-y: auto;
    flex-grow: 1;
}

.year-group {
    margin-bottom: 0.35rem;
}

.year-header {
    width: 100%;
    text-align: left;
    background: none;
    border: 1px solid transparent;
    font-family: var(--font-pixel);
    font-size: 1.25rem;
    color: var(--text-main);
    padding: 0.3rem 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: background 0.15s ease;
}

.year-header:hover {
    background: #f0eee6;
    border-color: var(--border-dark);
}

.year-group.active .year-header {
    background: var(--sonic-gold);
    font-weight: bold;
    border-color: var(--border-dark);
    box-shadow: 2px 2px 0px var(--border-dark);
}

.year-group .arrow-icon {
    display: inline-block;
    font-size: 0.75rem;
    transition: transform 0.2s ease;
}

.year-group.open .arrow-icon {
    transform: rotate(90deg);
}

.timeline-sidebar .month-sub-menu {
    list-style: none;
    padding-left: 0.8rem;
    display: none;
    flex-direction: column;
    gap: 0.2rem;
    margin-top: 0.2rem;
}

.year-group.open .month-sub-menu {
    display: flex;
}

.win-content {
    padding: 0.75rem 0.5rem;
}

.timeline-sidebar ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.timeline-link {
    text-decoration: none;
    font-family: var(--font-pixel);
    font-size: 1.15rem;
    color: var(--text-main);
    display: block;
    padding: 0.3rem 0.5rem;
    border: 1px transparent solid;
    transition: all 0.1s ease;
}

.timeline-link .bullet {
    color: var(--sonic-red);
    font-size: 0.8rem;
    opacity: 0;
    transition: opacity 0.15s ease;
}

.timeline-link:hover {
    background: #f0eee6;
    border-color: var(--border-dark);
}

.timeline-link.active {
    background: var(--sonic-gold);
    color: var(--border-dark);
    font-weight: bold;
    border-color: var(--border-dark);
    box-shadow: 2px 2px 0px var(--border-dark);
}

.timeline-link.active .bullet,
.timeline-link:hover .bullet {
    opacity: 1;
}

/* --- Main Stream & Sections --- */
.gallery-stream {
    flex-grow: 1;
}

.month-section {
    margin-bottom: 3.5rem;
    scroll-margin-top: 5rem;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.month-heading {
    font-family: var(--font-pixel);
    font-size: 1.8rem;
    color: var(--sonic-red);
    background: #ffffff;
    padding: 0.1rem 0.6rem;
    border: 2px solid var(--border-dark);
    box-shadow: 2px 2px 0px var(--border-dark);
}

.section-line {
    flex-grow: 1;
    height: 2px;
    background: var(--border-dark);
}

/* --- Photo Grid (Google Photos style density) --- */
.photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 1.25rem;
}

.win-box-card {
    position: relative;
    background: var(--card-bg);
    border: 2px solid var(--border-dark);
    box-shadow: 3px 3px 0px var(--border-dark);
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.win-box-card:hover {
    transform: translate(-2px, -2px);
    box-shadow: 5px 5px 0px var(--border-dark);
}

.card-tag {
    position: absolute;
    top: 6px;
    right: 6px;
    background: var(--sonic-gold);
    color: var(--border-dark);
    font-size: 0.75rem;
    padding: 0 4px;
    border: 1px solid var(--border-dark);
    z-index: 2;
    opacity: 0.8;
}

.img-wrapper {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: #e2e0d8;
    border-bottom: 2px solid var(--border-dark);
}

.img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

.win-box-card:hover .img-wrapper img {
    transform: scale(1.04);
}

.photo-info {
    padding: 0.6rem 0.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    background: #fdfdfc;
}

.photo-label,
.photo-date {
    font-family: var(--font-pixel);
    font-size: 1.15rem;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.photo-date {
    color: var(--text-muted);
}

/* --- Lightbox Modal --- */
.sg-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(30, 30, 35, 0.75);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 1000;
    padding: 1rem;
}

.sg-lightbox.active {
    opacity: 1;
    pointer-events: auto;
}

.sg-lightbox-content {
    width: auto;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.lightbox-img-frame {
    background: #111113;
    padding: 0.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 90vw;
    max-height: 70vh;
    overflow: hidden;
}

#sg-lightbox-img,
.sg-lightbox-img {
    display: block;
    max-width: 100%;
    max-height: 68vh;
    width: auto;
    height: auto;
    object-fit: contain;
}

.lightbox-caption {
    padding: 0.75rem 1rem;
    font-family: var(--font-pixel);
    font-size: 1.35rem;
    background: #f0eee6;
    border-top: 2px solid var(--border-dark);
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.lightbox-caption .caption-date {
    font-family: var(--font-pixel);
    font-size: 1.35rem;
    color: var(--text-main);
}

.lightbox-caption .caption-id {
    font-family: var(--font-pixel);
    font-size: 1.35rem;
    color: var(--text-muted);
}

.win-close {
    cursor: pointer;
    background: var(--sonic-red);
    color: white;
    padding: 0 0.4rem;
    font-weight: bold;
    border: 1px solid var(--border-dark);
    line-height: 1.1;
}

.win-close:hover {
    background: #b91c1c;
}

/* --- Footer --- */
.page-footer {
    text-align: center;
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 2px dashed var(--border-dark);
}

.footer-rings {
    margin-bottom: 0.5rem;
}

.ring-dot {
    font-size: 1.2rem;
    margin: 0 0.25rem;
}
.ring-dot.red { color: var(--sonic-red); }
.ring-dot.gold { color: var(--sonic-gold); }
.ring-dot.white { color: var(--text-muted); }

.footer-text {
    font-family: var(--font-pixel);
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.web-badges {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
}

.retro-badge-text {
    font-family: var(--font-pixel);
    font-size: 0.95rem;
    background: var(--border-dark);
    color: #ffffff;
    padding: 0.2rem 0.5rem;
    border: 1px solid var(--border-dark);
}

/* --- Mobile Responsiveness --- */
@media (max-width: 768px) {
    .gallery-container {
        flex-direction: column;
        gap: 1.5rem;
    }

    .timeline-sidebar {
        width: 100%;
        position: relative;
        top: 0;
    }

    .timeline-sidebar ul {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 0.25rem;
    }

    .timeline-link {
        white-space: nowrap;
    }

    .photo-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 0.85rem;
    }
}