/* ---------- Base ---------- */

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

:root {
    --bg-sidebar: #0a0e1a;
    --bg-main: #151a26;
    --text: #e6edf5;
    --muted: #9aa7b8;
    --accent: rgb(156, 217, 249);
    --sidebar-w: 300px;
}

body {
    background: var(--bg-main);
    color: var(--text);
    font-family: 'PT Sans', Calibri, Arial, sans-serif;
    font-size: 1em;
    line-height: 1.6;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover, a:focus {
    color: #fff;
}

/* ---------- Sidebar (galaxy lives here) ---------- */

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-w);
    background: var(--bg-sidebar);
    border-right: 1px solid rgba(156, 217, 249, 0.15);
    overflow: hidden;
    z-index: 10;
}

#galaxy-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.sidebar-inner {
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 3em 2em 2.5em;
}

.sidebar-avatar img {
    display: block;
    width: 110px;
    height: 110px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid rgba(156, 217, 249, 0.4);
    box-shadow: 0 0 18px rgba(156, 217, 249, 0.25);
}

.sidebar-name {
    margin-top: 0.9em;
    color: var(--text);
    font-size: 1.5em;
    font-weight: 700;
    letter-spacing: 0.03em;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 0.9em;
    margin-top: 2.5em;
}

.sidebar-nav a {
    color: var(--muted);
    font-size: 1.05em;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: color 0.2s ease;
}

.sidebar-nav a:hover, .sidebar-nav a:focus {
    color: var(--accent);
}

.sidebar-nav a.active {
    color: var(--accent);
    border-bottom: 2px solid var(--accent);
}

.sidebar-icons {
    margin-top: auto;
    display: flex;
    align-items: center;
    gap: 0.6em;
}

.sidebar-icons a {
    color: var(--muted);
    font-size: 3.2em;
    line-height: 1;
    transition: color 0.2s ease;
}

.sidebar-icons a:hover, .sidebar-icons a:focus {
    color: var(--accent);
}

/* ---------- Main panel ---------- */

main {
    margin-left: var(--sidebar-w);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 4.5em 8% 2em;
}

.page {
    display: none;
    max-width: 720px;
    width: 100%;
    margin: 0 auto;
}

.page.active {
    display: block;
}

.page h2 {
    margin: 0 0 0.75em;
    font-size: 2.4em;
    letter-spacing: 0.04em;
}

.page p {
    color: var(--text);
    margin: 0 0 1em;
    font-size: 1.05em;
}

.contact-icons {
    display: flex;
    align-items: center;
    gap: 0.75em;
    margin-top: 1.5em;
}

.contact-icons a {
    font-size: 3.2em;
    line-height: 1;
}

.footer {
    max-width: 720px;
    width: 100%;
    margin: auto auto 0;
    padding-top: 4em;
    color: var(--muted);
    font-size: 0.85em;
    text-align: center;
}

/* ---------- Blog ---------- */

.post-meta {
    display: block;
    color: var(--muted);
    font-size: 0.9em;
    letter-spacing: 0.05em;
}

.post-item { margin-bottom: 2.2em; }

.post-item h3 {
    margin: 0.15em 0 0.3em;
    font-size: 1.35em;
}

.post-item p { color: var(--muted); }

.post .post-meta { margin-top: -1.5em; margin-bottom: 2em; }

.post-content h3 { font-size: 1.3em; margin: 1.4em 0 0.5em; }
.post-content h4 { font-size: 1.1em; margin: 1.2em 0 0.4em; }

.post-content img { max-width: 100%; }

.post-content code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.9em;
}

.post-content :not(pre) > code {
    background: rgba(156, 217, 249, 0.12);
    padding: 0.1em 0.35em;
    border-radius: 4px;
}

.post-content pre {
    background: var(--bg-sidebar);
    border: 1px solid rgba(156, 217, 249, 0.15);
    border-radius: 6px;
    padding: 1em;
    overflow-x: auto;
}

.post-content blockquote {
    border-left: 3px solid var(--accent);
    margin: 1em 0;
    padding-left: 1em;
    color: var(--muted);
}

.post-backlink { margin-top: 3em; }

/* ---------- Fade-in (replays on every page switch) ---------- */

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
    transition-delay: var(--reveal-delay, 0s);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- Tetris headings ---------- */

/* JS splits .tetris text into per-letter spans. Letters start as solid accent
   blocks falling from above; on landing the block fades revealing the glyph.
   Adding .play (re)starts the sequence. */

.tetris .tetris-letter,
.tetris-text .tetris-letter {
    display: inline-block;
    position: relative;
    opacity: 0;
}

.tetris.play .tetris-letter,
.tetris-text.play .tetris-letter {
    animation: tetris-drop 0.45s cubic-bezier(0.22, 0.9, 0.35, 1.1) forwards;
    animation-delay: var(--letter-delay, 0s);
}

.tetris .tetris-letter::after,
.tetris-text .tetris-letter::after {
    content: '';
    position: absolute;
    inset: 0.08em -0.02em;
    background: var(--accent);
    border-radius: 2px;
    opacity: 0;
}

.tetris.play .tetris-letter::after,
.tetris-text.play .tetris-letter::after {
    opacity: 1;
    animation: tetris-reveal 0.4s ease forwards;
    animation-delay: calc(var(--letter-delay, 0s) + 0.4s);
}

/* body-text blocks: gentler drop, softer accent so paragraphs don't strobe */
.tetris-text .tetris-letter::after {
    background: rgba(156, 217, 249, 0.55);
}

.tetris-text.play .tetris-letter {
    animation-name: tetris-drop-soft;
}

@keyframes tetris-drop-soft {
    from {
        opacity: 0;
        transform: translateY(-0.7em) rotate(-3deg);
    }
    70% {
        opacity: 1;
        transform: translateY(0.04em) rotate(1deg);
    }
    to {
        opacity: 1;
        transform: translateY(0) rotate(0deg);
    }
}

@keyframes tetris-drop {
    from {
        opacity: 0;
        transform: translateY(-1.4em) rotate(-8deg);
    }
    70% {
        opacity: 1;
        transform: translateY(0.06em) rotate(2deg);
    }
    to {
        opacity: 1;
        transform: translateY(0) rotate(0deg);
    }
}

@keyframes tetris-reveal {
    to { opacity: 0; }
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .tetris .tetris-letter,
    .tetris-text .tetris-letter {
        opacity: 1;
        animation: none !important;
    }

    .tetris .tetris-letter::after,
    .tetris-text .tetris-letter::after {
        display: none;
    }
}

/* ---------- Mobile ---------- */

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: auto;
        width: 100%;
        border-right: none;
        border-bottom: 1px solid rgba(156, 217, 249, 0.15);
    }

    .sidebar-inner {
        flex-direction: row;
        align-items: center;
        gap: 1em;
        padding: 0.75em 1.25em;
        text-align: left;
    }

    .sidebar-avatar img {
        width: 36px;
        height: 36px;
        box-shadow: none;
    }

    .sidebar-name {
        margin-top: 0;
        font-size: 1.15em;
    }

    .sidebar-nav {
        flex-direction: row;
        gap: 1em;
        margin-top: 0;
    }

    .sidebar-nav a { font-size: 0.9em; }

    .sidebar-icons {
        margin-top: 0;
        margin-left: auto;
    }

    .sidebar-icons a { font-size: 1.6em; }

    main {
        margin-left: 0;
        padding: 5em 6% 2em;
    }
}