/* ==========================================
   RESET & BASE STYLES
   ========================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    background-color: #ffffff;
    color: #000000;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: #000000;
    text-decoration: none;
}

p {
    margin-bottom: 1.5rem;
}

/* ==========================================
   THEME TOGGLE
   ========================================== */
.theme-toggle {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 100;
    background: transparent;
    color: #000000;
    border: none;
    padding: 0.4rem 0.8rem;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
}

.theme-toggle:hover {
    opacity: 0.7;
}

/* ==========================================
   SOCIAL SIDEBAR — top left
   ========================================== */
.social-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: #000000;
    color: #ffffff;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 0.6rem;
    font-weight: bold;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-bottom: 1px solid #333333;
}

.social-link:hover {
    background: #333333;
    color: #ffffff;
}

/* ==========================================
   SUPPORT LINK
   ========================================== */
.support-link {
    color: #000000;
    text-decoration: underline;
    font-weight: bold;
}

/* ==========================================
   LAYOUT — full width, edge to edge
   ========================================== */
.content {
    margin: 0;
    margin-left: 40px;
    padding: 0;
}

/* ==========================================
   CONTENT BLOCKS — edge to edge
   ========================================== */
.block {
    background-color: #ffffff;
    border-bottom: 1px solid #dddddd;
    margin: 0;
}

.block-header {
    background-color: #f5f5f5;
    border-bottom: 1px solid #dddddd;
    padding: 1rem 2rem;
}

.block-header h2 {
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 1rem;
    font-weight: normal;
    color: #000000;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.block-content {
    padding: 2rem;
}

/* ==========================================
   TEXT STYLE VARIANTS
   ========================================== */
.about-content p {
    font-style: normal;
    font-weight: normal;
    font-size: 0.95rem;
    max-width: 700px;
}

.section-desc {
    font-size: 0.85rem;
    max-width: 600px;
    color: #555555;
}

.section-desc.italic {
    font-style: italic;
}

.section-desc.bold {
    font-weight: bold;
    color: #000000;
}

/* ==========================================
   EMBED GRID — side by side, normal size
   ========================================== */
.embed-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    align-items: stretch;
}

.embed-item {
    flex: 0 0 326px;
    max-width: 326px;
}

.embed-item iframe {
    width: 100%;
    height: 100%;
    min-height: 560px;
    border: none;
}

/* ==========================================
   YOUTUBE CHANNEL CARD
   ========================================== */
.yt-channel-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem;
    background: #f5f5f5;
    border: 1px solid #dddddd;
    text-decoration: none;
    color: #000000;
    min-width: 220px;
    flex-shrink: 0;
}

.yt-channel-card:hover {
    background: #000000;
    color: #ffffff;
    border-color: #000000;
}

.yt-channel-card:hover .yt-sub {
    color: #aaaaaa;
}

.yt-play {
    font-size: 2rem;
    line-height: 1;
    flex-shrink: 0;
}

.yt-text {
    display: flex;
    flex-direction: column;
}

.yt-label {
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 1rem;
    font-weight: bold;
    letter-spacing: 1px;
}

.yt-sub {
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 0.7rem;
    color: #888888;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.25rem;
}

/* ==========================================
   APP CARDS
   ========================================== */
.app-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem;
    background: #f5f5f5;
    border: 1px solid #dddddd;
    text-decoration: none;
    color: #000000;
    min-width: 280px;
    max-width: 340px;
    flex-shrink: 0;
}

.app-card:hover {
    background: #000000;
    color: #ffffff;
    border-color: #000000;
}

.app-card:hover .app-desc {
    color: #aaaaaa;
}

.app-card:hover .app-icon {
    filter: grayscale(100%) invert(1);
}

.app-icon {
    width: 64px;
    height: 64px;
    border-radius: 14px;
    flex-shrink: 0;
    filter: grayscale(100%);
}

.app-text {
    display: flex;
    flex-direction: column;
}

.app-name {
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 1rem;
    font-weight: bold;
    letter-spacing: 1px;
}

.app-desc {
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 0.65rem;
    color: #888888;
    letter-spacing: 0.5px;
    margin-top: 0.4rem;
    line-height: 1.5;
}

/* ==========================================
   TOOLS LIST — plain text
   ========================================== */
.tools-list {
    font-size: 0.85rem;
    color: #333333;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
}

/* ==========================================
   TAGS & LINKS
   ========================================== */
.tag-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag-grid.centered {
    justify-content: center;
}

.tag {
    background-color: #f0f0f0;
    border: 1px solid #cccccc;
    padding: 0.5rem 1rem;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #000000;
}

a.tag.link {
    background-color: #ffffff;
    border-color: #999999;
}

a.tag.link:hover {
    background-color: #000000;
    color: #ffffff;
}

/* ==========================================
   DARK MODE
   ========================================== */
body.dark {
    background-color: #050505;
    color: #cccccc;
}

body.dark a {
    color: #ffffff;
}

body.dark .theme-toggle {
    background: transparent;
    color: #cccccc;
    border: none;
}

body.dark .social-link {
    background: #ffffff;
    color: #000000;
    border-bottom-color: #cccccc;
}

body.dark .social-link:hover {
    background: #cccccc;
    color: #000000;
}

body.dark .support-link {
    color: #ffffff;
}

body.dark .block {
    background-color: #0a0a0a;
    border-color: #222222;
}

body.dark .block-header {
    background-color: #111111;
    border-color: #222222;
}

body.dark .block-header h2 {
    color: #ffffff;
}

body.dark .section-desc {
    color: #888888;
}

body.dark .section-desc.bold {
    color: #cccccc;
}

body.dark .tag {
    background-color: #111111;
    border-color: #333333;
    color: #cccccc;
}

body.dark a.tag.link {
    background-color: #000000;
    border-color: #444444;
}

body.dark a.tag.link:hover {
    background-color: #ffffff;
    color: #000000;
}

body.dark .yt-channel-card {
    background: #111111;
    border-color: #333333;
    color: #ffffff;
}

body.dark .yt-channel-card:hover {
    background: #ffffff;
    color: #000000;
    border-color: #ffffff;
}

body.dark .yt-channel-card:hover .yt-sub {
    color: #555555;
}

body.dark .tools-list {
    color: #999999;
}

body.dark .app-card {
    background: #111111;
    border-color: #333333;
    color: #ffffff;
}

body.dark .app-card:hover {
    background: #ffffff;
    color: #000000;
    border-color: #ffffff;
}

body.dark .app-card:hover .app-desc {
    color: #555555;
}

body.dark .app-card:hover .app-icon {
    filter: grayscale(100%);
}

body.dark .app-icon {
    filter: grayscale(100%) brightness(0.8);
}

/* ==========================================
   GUIDE TOGGLE & BOX
   ========================================== */
.guide-toggle {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.5rem 1.2rem;
    background: #f5f5f5;
    border: 1px solid #dddddd;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    color: #000000;
}

.guide-toggle:hover {
    background: #000000;
    color: #ffffff;
    border-color: #000000;
}

.guide-toggle.open {
    background: #000000;
    color: #ffffff;
    border-color: #000000;
}

body.dark .guide-toggle {
    background: #111111;
    border-color: #333333;
    color: #cccccc;
}

body.dark .guide-toggle:hover,
body.dark .guide-toggle.open {
    background: #ffffff;
    color: #000000;
    border-color: #ffffff;
}

.guide-box {
    display: none;
    margin-top: 1rem;
    padding: 2rem;
    background: #f9f9f9;
    border: 1px solid #dddddd;
    max-height: 70vh;
    overflow-y: auto;
}

.guide-box.open {
    display: block;
}

body.dark .guide-box {
    background: #0d0d0d;
    border-color: #333333;
}

.guide-content {
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 0.8rem;
    line-height: 1.7;
    color: #222222;
}

body.dark .guide-content {
    color: #cccccc;
}

.guide-content h1 {
    font-size: 1.3rem;
    margin: 1.5rem 0 0.75rem;
    letter-spacing: 1px;
}

.guide-content h2 {
    font-size: 1.05rem;
    margin: 1.5rem 0 0.5rem;
    letter-spacing: 1px;
    border-bottom: 1px solid #dddddd;
    padding-bottom: 0.4rem;
}

body.dark .guide-content h2 {
    border-bottom-color: #333333;
}

.guide-content h3 {
    font-size: 0.9rem;
    margin: 1.2rem 0 0.4rem;
}

.guide-content p {
    margin-bottom: 0.75rem;
}

.guide-content ul {
    list-style: none;
    padding-left: 1.2rem;
    margin-bottom: 0.75rem;
}

.guide-content li {
    margin-bottom: 0.3rem;
}

.guide-content li::before {
    content: "-";
    margin-right: 0.5rem;
    color: #888888;
}

.guide-content pre {
    background: #1a1a1a;
    color: #e0e0e0;
    padding: 1rem;
    overflow-x: auto;
    margin-bottom: 1rem;
    font-size: 0.7rem;
    line-height: 1.5;
}

body.dark .guide-content pre {
    background: #0a0a0a;
    border: 1px solid #222222;
}

.guide-content code {
    background: #eeeeee;
    padding: 0.1rem 0.3rem;
    font-size: 0.75rem;
}

body.dark .guide-content code {
    background: #1a1a1a;
}

.guide-content pre code {
    background: none;
    padding: 0;
}

.guide-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
    font-size: 0.7rem;
}

.guide-content th,
.guide-content td {
    border: 1px solid #dddddd;
    padding: 0.4rem 0.6rem;
    text-align: left;
}

.guide-content th {
    background: #f0f0f0;
    font-weight: bold;
}

body.dark .guide-content th {
    background: #1a1a1a;
}

body.dark .guide-content th,
body.dark .guide-content td {
    border-color: #333333;
}

.guide-content hr {
    border: none;
    border-top: 1px solid #dddddd;
    margin: 1.5rem 0;
}

body.dark .guide-content hr {
    border-top-color: #333333;
}

.guide-content a {
    text-decoration: underline;
}

/* ==========================================
   RESPONSIVE
   ========================================== */
@media (max-width: 768px) {
    .content {
        margin-left: 0;
    }

    .social-sidebar {
        position: fixed;
        left: 0;
        top: auto;
        bottom: 0;
        flex-direction: row;
        width: 100%;
        z-index: 100;
    }

    .social-link {
        flex: 1;
        width: auto;
        height: 32px;
        font-size: 0.55rem;
        border-bottom: none;
        border-right: 1px solid #333333;
    }

    .social-link:last-child {
        border-right: none;
    }

    .theme-toggle {
        top: 0.5rem;
        right: 0.5rem;
        font-size: 0.6rem;
        padding: 0.3rem 0.6rem;
    }

    .block-header {
        padding: 0.6rem 0.8rem;
    }

    .block-header h2 {
        font-size: 0.8rem;
        letter-spacing: 1.5px;
    }

    .block-content {
        padding: 1rem 0.8rem;
    }

    .about-content p {
        font-size: 0.75rem;
    }

    .section-desc {
        font-size: 0.7rem;
    }

    .embed-stack {
        flex-direction: column;
        gap: 1rem;
    }

    .embed-item {
        flex: 0 0 auto;
        max-width: 100%;
        min-width: 0;
    }

    .embed-item iframe {
        min-height: 400px;
    }

    .app-card {
        min-width: 240px;
        max-width: 280px;
        padding: 1rem;
        gap: 0.8rem;
    }

    .app-icon {
        width: 48px;
        height: 48px;
        border-radius: 11px;
    }

    .app-name {
        font-size: 0.8rem;
    }

    .app-desc {
        font-size: 0.55rem;
    }

    .yt-channel-card {
        min-width: 160px;
        padding: 1rem;
        gap: 0.8rem;
    }

    .yt-play {
        font-size: 1.4rem;
    }

    .yt-label {
        font-size: 0.8rem;
    }

    .yt-sub {
        font-size: 0.6rem;
    }

    .tools-list {
        font-size: 0.7rem;
    }

    .guide-box {
        padding: 1rem;
        max-height: 60vh;
    }

    .guide-content {
        font-size: 0.7rem;
    }

    .guide-content h1 {
        font-size: 1rem;
    }

    .guide-content h2 {
        font-size: 0.85rem;
    }

    .guide-content h3 {
        font-size: 0.75rem;
    }

    .guide-content pre {
        font-size: 0.6rem;
        padding: 0.6rem;
    }

    .guide-content table {
        font-size: 0.6rem;
        display: block;
        overflow-x: auto;
    }

    /* Bottom bar spacer */
    body {
        padding-bottom: 32px;
    }
}

/* ==========================================
   SNAKE GAME
   ========================================== */
#snake-warning {
    position: fixed;
    top: 6px;
    left: 0;
    width: 100%;
    z-index: 9998;
    text-align: center;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 0.6rem;
    letter-spacing: 2px;
    color: #aaaaaa;
    background: none;
    pointer-events: none;
}

body.dark #snake-warning {
    color: #444444;
}

#snake-canvas {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 10000;
    pointer-events: none;
}

#snake-hud {
    position: fixed;
    top: 6px;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 1rem;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 0.6rem;
    letter-spacing: 2px;
    color: #000000;
    z-index: 10001;
    pointer-events: none;
}

body.dark #snake-hud {
    color: #888888;
}

#snake-gameover {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    z-index: 10002;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    color: #ffffff;
    text-align: center;
}

#snake-go-text {
    font-size: 1.2rem;
    font-weight: bold;
    letter-spacing: 3px;
}

#snake-go-score {
    font-size: 0.8rem;
    letter-spacing: 2px;
}

#snake-go-hint {
    font-size: 0.55rem;
    color: #888888;
    letter-spacing: 1px;
}