/* styles.css */
:root {
    --page-background: #121212;
    --panel-background: #1d1d1d;
    --text-color: #f2f2f2;
    --secondary-text: #b8b8b8;
    --content-width: 760px;
    --sidebar-width: 280px;
    --spacing-large: 24px;
    --spacing-medium: 16px;
    --spacing-small: 10px;
    --border-radius: 18px;
    --scale-factor: 1;
    --post-padding: 1px;
    --font-main: Arial, Helvetica, sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--page-background);
    background-image: url("images/common/gallery_bg.png");
    height: 200vh;
    background-attachment: fixed;
    background-size: cover;
    background-position: center 20%;
    color: var(--text-color);
    font-family: var(--font-main);
    overflow-x: hidden;
}

#pageRoot {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    gap: var(--spacing-large);
    padding: var(--spacing-large);
    transform-origin: top center;
}

#mainColumn {
    width: var(--content-width);
    max-width: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-large);
}

.sidebar {
    width: var(--sidebar-width);
    min-height: calc(100vh - 48px);
    position: sticky;
    top: var(--spacing-large);
    background: var(--panel-background);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition:
        transform 0.3s ease,
        opacity 0.3s ease;
    z-index: 30;
}

.sidebar-content {
    margin-top: 0;
    padding: 22px;
}

.sidebar h2 {
    margin-top: 0;
    margin-bottom: 18px;
    padding-left: 50px;
    font-size: 1.2rem;
}

.sidebar-list {
    margin: 0;
    padding-left: 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.newsletter-item {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    color: var(--secondary-text);
}

.post-card {
    width: 100%;
    margin-bottom: 16px;
    padding: var(--post-padding);
    background-image: url("images/common/post_background.png");
    background-size: 100% 100%;
    image-rendering: auto;
    border-radius: var(--border-radius);

    border: 16px solid transparent;
    border-image-source: url("images/common/post_background.png");
    border-image-slice: 24 fill;
    border-image-repeat: stretch;
}

.post-inner {
    width: 100%;
}

.media-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: 14px;
    background: #000;
}

.post-image {
    width: 100%;
    display: block;
    object-fit: cover;
}

.play-button {
    position: absolute;
    inset: 0;
    margin: auto;
    width: 100px;
    height: 100px;
    background: transparent;
    border: none;
    cursor: pointer;
    transition: transform 0.045s ease;
}

.play-button:hover {
    transform: scale(1.1);
}

.play-button img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.unity-frame {
    width: 100%;
    aspect-ratio: 16 / 9;
    border: none;
    background: #000;
    display: block;
}

.post-text-content {
    padding-top: 18px;
}

.post-title {
    margin: 0 0 12px;
    font-size: 1.5rem;
}

.post-body {
    line-height: 1.65;
    color: var(--secondary-text);
    white-space: pre-wrap;
}

.post-footer {
    margin-top: 18px;
    color: #8e8e8e;
    font-size: 0.9rem;
}

.sidebar-toggle {
    position: fixed;
    top: 20px;
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 999px;
    background: #2b2b2b;
    color: white;
    font-size: 20px;
    z-index: 100;
    display: none;
    cursor: pointer;
}

.left-toggle {
    left: 16px;
}

.right-toggle {
    right: 16px;
}

.layout-default .sidebar {
    display: block;
}

.layout-default .sidebar-toggle {
    display: none;
}

.layout-compact .sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    width: min(85vw, 320px);
    min-height: 100vh;
    border-radius: 0;
    opacity: 0;
    pointer-events: none;
}

.layout-compact .sidebar-left {
    left: 0;
    transform: translateX(-100%);
}

.layout-compact .sidebar-right {
    right: 0;
    transform: translateX(100%);
}

.layout-compact .sidebar.visible {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
}

.layout-compact .sidebar-toggle {
    display: block;
}

.layout-expanded {
    --scale-factor: 1.25;
}

.layout-expanded #pageRoot {
    transform: scale(var(--scale-factor));
}

@media (max-width: 860px) {
    #pageRoot {
        padding: 12px;
    }

    .post-card {
        padding: 14px;
    }

    .post-title {
        font-size: 1.25rem;
    }

    .play-button {
        width: 80px;
        height: 80px;
    }
}