@font-face {
    font-family: 'Meta Pro';
    src: url('../assets/fonts/FFMetaProRegular.TTF') format('truetype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Meta Pro';
    src: url('../assets/fonts/FFMetaProRegIt.TTF') format('truetype');
    font-weight: 400;
    font-style: italic;
    font-display: swap;
}

@font-face {
    font-family: 'Meta Pro';
    src: url('../assets/fonts/FFMetaProMedium.TTF') format('truetype');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Meta Pro';
    src: url('../assets/fonts/FFMetaProMedIt.TTF') format('truetype');
    font-weight: 500;
    font-style: italic;
    font-display: swap;
}

@font-face {
    font-family: 'Meta Pro';
    src: url('../assets/fonts/FFMetaProBold.TTF') format('truetype');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Meta Pro';
    src: url('../assets/fonts/FFMetaProBoldIt.TTF') format('truetype');
    font-weight: 700;
    font-style: italic;
    font-display: swap;
}

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

:root {
    /* Colors */
    --bg-primary: #ffffff;
    --bg-sidebar: #f2850000;
    --bg-sidebar-top: #f4f4f40e;
    --bg-sidebar-middle: #f4f4f460;
    --bg-sidebar-bottom: #f4f4f40e;
    --accent-primary: #F28700;
    --accent-secondary: #cc7000;
    --text-primary: #929292;
    --text-secondary: #949494;
    
    /* Typography */
    --font-family: 'Meta Pro', system-ui, -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
    --font-size-xs: clamp(0.7rem, calc(0.8vw + 0.8vh), 1rem);
    --font-size-sm: clamp(0.8rem, calc(0.9vw + 0.9vh), 1.2rem);
    --font-size-md: clamp(1rem, calc(1.2vw + 1.2vh), 1.6rem);
    --font-size-lg: clamp(1.2rem, calc(1.6vw + 1.6vh), 2.5rem);
    
    /* Spacing */
    --sidebar-width: clamp(350px, 25vw, 500px);
    --sidebar-padding-x: clamp(30px, 6vw, 40px);
    --sidebar-padding-y: clamp(10px, 2vh, 20px);
    --spacing-sm: 8px;
    --spacing-md: 12px;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--bg-primary);
    font-family: var(--font-family);
}

html {
    font-size: 80%;
}

#layout {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: row;
}

/* Mobile Header */
#mobile_header {
    display: none;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: clamp(8px, 2vh, 16px) clamp(12px, 3vw, 24px);
    background: var(--bg-sidebar-top);
    border-bottom: 1.5px solid var(--accent-primary);
    z-index: 100;
}

.mobile_header_logo {
    height: clamp(20px, 8vw, 40px);
    width: auto;
}

.mobile_header_nav {
    display: flex;
    gap: clamp(12px, 2vw, 20px);
    flex-wrap: wrap;
}

.mobile_nav_link {
    font-size: var(--font-size-sm);
    color: var(--accent-primary);
    text-decoration: none;
    cursor: pointer;
}

.mobile_nav_link:hover {
    color: var(--accent-secondary);
}

/* Sidebar Structure */
#sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    background: var(--bg-sidebar);
    display: flex;
    flex-direction: column;
    overflow-y: hidden;
    z-index: 10;
}

/* Mobile responsiveness */
@media (max-width: 1024px) {
    #layout {
        flex-direction: column;
    }
    
    #mobile_header {
        display: flex;
    }
    
    #sidebar {
        display: none;
    }
}

.sidebar_top {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    padding: var(--sidebar-padding-y) calc(var(--sidebar-padding-x) * 0.85);
    background: var(--bg-sidebar-top);
    border-right: 1.5px solid var(--accent-primary);
}

.sidebar_middle {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    padding: 0;
    background: var(--bg-sidebar-middle);
    min-height: 0;
    border-right: 1.5px solid var(--accent-primary);
}

.sidebar_middle_upper {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    border-top: 1px solid var(--accent-primary); 
    border-bottom: 1px solid var(--accent-primary);
    padding: var(--sidebar-padding-y) var(--sidebar-padding-x);
}

.sidebar_middle_lower {
    flex: 1 1 auto;
    padding: var(--sidebar-padding-y) var(--sidebar-padding-x);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: 0;
}

.sidebar_bottom {
    flex: 1 1 auto;
    background: var(--bg-sidebar-bottom);
    border-top: 1px solid var(--accent-primary);
    border-right: 1.5px solid var(--accent-primary);
}

/* Logo */
.logo_image {
    width: 100%;
    max-width: 600px;
    height: auto;
}

/* Description */
.description_header {
    font-size: var(--font-size-md);
    letter-spacing: 0.0em;
    text-transform: uppercase;
    color: var(--accent-primary);
    margin-bottom: var(--spacing-sm);
}

.description_subtitle {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-weight: 400;
    letter-spacing: 0.00em;
    white-space: pre-line;
}

.description_text {
    font-size: var(--font-size-sm);
    line-height: 1.4;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.sidebar_link {
    display: inline-block;
    font-size: var(--font-size-md);
    color: var(--accent-primary);
    text-decoration: none;
    letter-spacing: 0.00em;
    cursor: pointer;
}

.sidebar_link:hover {
    color: var(--accent-secondary);
}

.sidebar_links_container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--sidebar-padding-y) var(--sidebar-padding-x);
}

/* Grid Container */
#grid_container {
    flex: 1;
    position: relative;
    overflow: hidden;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
    cursor: grab;
}

canvas:active {
    cursor: grabbing;
}

/* Slideshow Overlay */
.slideshow_overlay {
    position: absolute;
    left: 0;
    top: 0;
    z-index: 5;
    pointer-events: none;
}

.info_cell_overlay {
    position: absolute;
    left: 0;
    top: 0;
    z-index: 6;
    pointer-events: none;
    display: none;
}

.info_cell_content {
    width: 100%;
    height: 100%;
    overflow-y: auto;
    pointer-events: auto;
    background: transparent;
    position: relative;
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 12%, black 88%, transparent 100%);
    mask-image: linear-gradient(to bottom, transparent 0%, black 0%, black 88%, transparent 100%);
    /* scrollbar-width: none; */
    scrollbar-color: var(--text-secondary) transparent;
    -ms-overflow-style: none;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    cursor: scroll;
}

.info_cell_content:active {
    cursor: grabbing;
}

.info_cell_content::-webkit-scrollbar {
    display: none;
}

.info_cell_title {
    font-family: var(--font-family);
    color: #F28700;
}

.info_cell_subtitle {
    font-family: var(--font-family);
    color: #949494;
    white-space: pre-line;
}

.info_cell_description {
    font-family: var(--font-family);
    color: #929292;
    white-space: pre-line;
}

.slideshow_controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    pointer-events: auto;
}

.slideshow_btn {
    background: transparent;
    border: none;
    color: var(--accent-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    padding: var(--spacing-sm) 20px;
    width: 44px;
    text-align: center;
    cursor: pointer;
    transition: background 0.2s;
}

.slideshow_btn:hover {
    color: var(--accent-secondary);
}

.image_counter {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    font-family: var(--font-family);
    width: 4ch;
    text-align: center;
}