/* p9.rs -- Plan 9 Rio window-manager aesthetic.
   Bitmap-precise, 1px borders, no shadows, no radii, no gradients. */

:root {
    --c-white: #ffffff;
    --c-bg: #f5f5f5;
    --c-ink: #000000;
    --c-comment: #555555;
    --c-cyan: #9eeeee;
    --c-yellow: #ffffaa;
    --c-green: #aaeeaa;
    --c-lavender: #eeeeff;

    --font-mono: "Courier Prime", "IBM Plex Mono", "Courier New", monospace;
    --font-sans: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;

    --title-h: 14px;
}

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

html, body {
    background: var(--c-bg);
    color: var(--c-ink);
    font-family: var(--font-mono);
    font-size: 15px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

body {
    padding: 16px;
}

/* ---- Outer frame ---- */
.screen {
    max-width: 1320px;
    margin: 0 auto;
    border: 1px solid var(--c-ink);
    background: var(--c-bg);
}

/* ---- Rio top bar ---- */
.rio-bar {
    display: flex;
    align-items: center;
    height: 22px;
    background: var(--c-cyan);
    border-bottom: 1px solid var(--c-ink);
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 500;
    padding: 0 6px;
    gap: 14px;
    user-select: none;
}
.rio-menu {
    cursor: pointer;
    padding: 0 4px;
}
.rio-menu:hover {
    background: var(--c-ink);
    color: var(--c-cyan);
}
.rio-spacer { flex: 1; }
.rio-clock,
.rio-host {
    font-family: var(--font-mono);
    font-size: 0.75rem;
}
.rio-host { padding-left: 12px; border-left: 1px solid var(--c-ink); margin-left: 8px; }

/* ---- Pane (window) base ---- */
.pane {
    position: relative;
    background: var(--c-white);
    border: 1px solid var(--c-ink);
    margin: -1px 0 0 -1px; /* shared borders -- panels touch */
}

.pane::before {
    content: attr(data-title);
    display: flex;
    align-items: center;
    height: var(--title-h);
    background: var(--title-color, var(--c-cyan));
    font-family: var(--font-sans);
    font-size: 0.65rem;
    font-weight: 500;
    line-height: var(--title-h);
    letter-spacing: 0.02em;
    padding: 0 6px;
    border-bottom: 1px solid var(--c-ink);
    color: var(--c-ink);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pane::after {
    /* tiny window "drag handle" dot in the title bar, on the left */
    content: "";
    position: absolute;
    top: 4px;
    left: 4px;
    width: 6px;
    height: 6px;
    background: var(--c-ink);
    pointer-events: none;
}

.pane-body {
    padding: 14px 16px 16px;
}

/* ---- Hero (Rio tile layout) ---- */
.hero {
    display: grid;
    grid-template-columns: 2fr 1fr;
    grid-template-rows: minmax(280px, auto) minmax(220px, auto);
    border-bottom: 1px solid var(--c-ink);
}

.pane-main { grid-column: 1; grid-row: 1 / span 2; }
.pane-ls   { grid-column: 2; grid-row: 1; }
.pane-glenda { grid-column: 2; grid-row: 2; }
.pane-status { display: none; } /* moved into ls/glenda layout for clarity */

@media (min-width: 1100px) {
    .hero {
        grid-template-columns: 2fr 1fr 1fr;
        grid-template-rows: minmax(300px, auto) minmax(220px, auto);
    }
    .pane-main { grid-column: 1; grid-row: 1 / span 2; }
    .pane-ls   { grid-column: 2; grid-row: 1; }
    .pane-glenda { grid-column: 3; grid-row: 1; }
    .pane-status { display: block; grid-column: 2 / span 2; grid-row: 2; }
}

/* ---- Headline area ---- */
.title {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: clamp(2rem, 6vw, 4rem);
    letter-spacing: -0.02em;
    line-height: 1;
    margin: 6px 0 8px;
}

.subtitle {
    font-family: var(--font-mono);
    color: var(--c-comment);
    font-size: 0.95rem;
    margin-bottom: 18px;
}

.lede {
    font-size: 0.98rem;
    margin-bottom: 18px;
    max-width: 56ch;
}

.code-block {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    background: var(--c-bg);
    border: 1px solid var(--c-ink);
    padding: 10px 12px;
    margin: 10px 0 18px;
    white-space: pre;
    overflow-x: auto;
}

.kvlist {
    list-style: none;
    border-top: 1px solid var(--c-ink);
}
.kvlist li {
    display: flex;
    border-bottom: 1px solid var(--c-ink);
    font-size: 0.85rem;
}
.kvlist .k {
    width: 110px;
    padding: 4px 8px;
    background: var(--c-bg);
    border-right: 1px solid var(--c-ink);
    color: var(--c-comment);
}
.kvlist .v {
    flex: 1;
    padding: 4px 8px;
}

/* ---- ls panel ---- */
.dirlist {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    line-height: 1.5;
    white-space: pre;
    overflow-x: auto;
    color: var(--c-ink);
}

.mono { font-family: var(--font-mono); }
.small { font-size: 0.8rem; }

/* ---- Glenda CSS bunny ---- */
.glenda-stage {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 200px;
    gap: 16px;
    padding: 20px;
}
.glenda {
    position: relative;
    width: 110px;
    height: 130px;
}
.glenda .ear {
    position: absolute;
    top: 0;
    width: 16px;
    height: 56px;
    background: var(--c-white);
    border: 1px solid var(--c-ink);
}
.glenda .ear-l { left: 28px; transform: rotate(-10deg); transform-origin: bottom center; }
.glenda .ear-r { left: 64px; transform: rotate(10deg); transform-origin: bottom center; }
.glenda .head {
    position: absolute;
    top: 38px;
    left: 22px;
    width: 66px;
    height: 50px;
    background: var(--c-white);
    border: 1px solid var(--c-ink);
}
.glenda .body {
    position: absolute;
    top: 78px;
    left: 14px;
    width: 82px;
    height: 50px;
    background: var(--c-white);
    border: 1px solid var(--c-ink);
}
.glenda .eye {
    position: absolute;
    top: 56px;
    width: 6px;
    height: 6px;
    background: var(--c-ink);
}
.glenda .eye-l { left: 38px; }
.glenda .eye-r { left: 64px; }
.glenda .nose {
    position: absolute;
    top: 70px;
    left: 50px;
    width: 8px;
    height: 4px;
    background: var(--c-ink);
}

.glenda.blink .eye {
    height: 1px;
    top: 60px;
}

.glenda-caption {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    color: var(--c-comment);
    text-align: center;
}

/* ---- Status panel ---- */
.status-line {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.7;
    display: flex;
    align-items: center;
    gap: 6px;
}
.dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--c-ink);
    border: 1px solid var(--c-ink);
    margin-right: 4px;
}
.dot-on { background: var(--c-green); }
.dot-warn { background: var(--c-yellow); }
#loadbar { font-family: var(--font-mono); }

/* ---- Generic grids of panels ---- */
.grid {
    display: grid;
    gap: 0;
    border-bottom: 1px solid var(--c-ink);
}
.grid-why { grid-template-columns: 2fr 1fr; }
.grid-modules {
    grid-template-columns: repeat(4, 1fr);
    position: relative;
}
.grid-9p { grid-template-columns: 1fr; }
.grid-roadmap { grid-template-columns: 1fr 1fr; }
.grid-quotes { grid-template-columns: repeat(3, 1fr); }
.grid-install { grid-template-columns: 2fr 1fr; }

@media (max-width: 900px) {
    .hero {
        grid-template-columns: 1fr !important;
        grid-template-rows: auto auto auto auto !important;
    }
    .pane-main, .pane-ls, .pane-glenda, .pane-status {
        grid-column: 1 !important;
        grid-row: auto !important;
        display: block;
    }
    .grid-why,
    .grid-modules,
    .grid-roadmap,
    .grid-quotes,
    .grid-install {
        grid-template-columns: 1fr;
    }
    .span2 { grid-column: 1 !important; }
}

.span2 { grid-column: span 2; }

/* ---- Section labels (inline title bars across grids) ---- */
.section-label {
    grid-column: 1 / -1;
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 600;
    background: var(--c-yellow);
    border-bottom: 1px solid var(--c-ink);
    padding: 4px 8px;
    letter-spacing: 0.04em;
}

/* ---- Headings inside panes ---- */
.h2 {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.3rem;
    margin: 4px 0 12px;
    border-bottom: 1px solid var(--c-ink);
    padding-bottom: 6px;
}
.h3 {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.05rem;
    margin: 4px 0 4px;
}
.meta {
    color: var(--c-comment);
    font-size: 0.8rem;
    margin-bottom: 8px;
    font-style: italic;
}
.path {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--c-comment);
    margin-top: 10px;
    border-top: 1px dashed var(--c-ink);
    padding-top: 6px;
}
.pane-body p { margin-bottom: 10px; }
.pane-body p:last-child { margin-bottom: 0; }

/* ---- Numbered list ---- */
.numlist {
    list-style: none;
    counter-reset: pn;
}
.numlist li {
    counter-increment: pn;
    padding: 4px 0 4px 28px;
    border-bottom: 1px dotted var(--c-comment);
    position: relative;
    font-size: 0.9rem;
}
.numlist li::before {
    content: counter(pn, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 4px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--c-comment);
    background: var(--c-bg);
    padding: 0 4px;
    border: 1px solid var(--c-ink);
    line-height: 1.3;
}
.numlist li:last-child { border-bottom: none; }

/* ---- 9P diagram ---- */
.ninep-diagram {
    display: grid;
    grid-template-columns: 120px 1fr 120px;
    align-items: stretch;
    border: 1px solid var(--c-ink);
    background: var(--c-bg);
    margin: 12px 0;
    min-height: 240px;
}
.node {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--c-white);
    border-right: 1px solid var(--c-ink);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 600;
}
.node.node-server {
    border-right: none;
    border-left: 1px solid var(--c-ink);
}
.node-label { writing-mode: vertical-rl; transform: rotate(180deg); letter-spacing: 0.1em; }

.wires {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    padding: 8px 0;
    background: repeating-linear-gradient(
        to bottom,
        transparent 0,
        transparent 23px,
        rgba(0,0,0,0.06) 23px,
        rgba(0,0,0,0.06) 24px
    );
}
.wire {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    padding: 0 12px;
    height: 24px;
}
.wire .arrow {
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--c-ink);
}
.wire:nth-child(odd) { color: var(--c-ink); }
.wire:nth-child(even) {
    color: var(--c-comment);
    justify-content: flex-end;
    text-align: right;
}
.wire.flash {
    background: var(--c-yellow);
}

.footnote {
    color: var(--c-comment);
    font-size: 0.78rem;
    margin-top: 8px;
}

/* ---- Roadmap table ---- */
.roadmap {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: 0.85rem;
}
.roadmap td {
    border-bottom: 1px solid var(--c-ink);
    padding: 6px 8px;
    vertical-align: top;
}
.roadmap tr:last-child td { border-bottom: none; }
.roadmap td:first-child { width: 50px; font-weight: 700; }
.roadmap td:nth-child(2) { width: 90px; color: var(--c-comment); }
.roadmap .done { background: var(--c-green); }
.roadmap .wip  { background: var(--c-yellow); }
.roadmap .todo { background: var(--c-bg); color: var(--c-comment); }
.roadmap td.done,
.roadmap td.wip,
.roadmap td.todo {
    text-align: center;
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 600;
    border-left: 1px solid var(--c-ink);
}

/* ---- Bench bars ---- */
.bench { list-style: none; }
.bench li {
    display: grid;
    grid-template-columns: 1fr 2fr 80px;
    align-items: center;
    gap: 10px;
    padding: 6px 0;
    border-bottom: 1px dotted var(--c-comment);
    font-family: var(--font-mono);
    font-size: 0.82rem;
}
.bench li:last-child { border-bottom: none; }
.bench-bar {
    display: block;
    width: 100%;
    height: 12px;
    background: var(--c-bg);
    border: 1px solid var(--c-ink);
    position: relative;
    overflow: hidden;
}
.bar-us {
    display: block;
    height: 100%;
    background: var(--c-cyan);
    width: 0;
    transition: width 1.4s cubic-bezier(.2,.8,.2,1);
}
.bench li:nth-child(2) .bar-us { background: var(--c-green); }
.bench li:nth-child(3) .bar-us { background: var(--c-yellow); }
.bench li:nth-child(4) .bar-us { background: var(--c-lavender); }
.bench li:nth-child(5) .bar-us { background: var(--c-cyan); }
.bench-num { text-align: right; color: var(--c-comment); }

/* ---- Quotes ---- */
.q {
    font-family: var(--font-mono);
    font-size: 1rem;
    border-left: 4px solid var(--c-ink);
    padding-left: 12px;
    margin: 8px 0 10px;
}
.cite {
    font-family: var(--font-sans);
    font-size: 0.78rem;
    color: var(--c-comment);
}

/* ---- Terminal block ---- */
.term {
    background: var(--c-ink);
    color: #d8f0d8;
    padding: 12px 14px;
    border: 1px solid var(--c-ink);
    font-family: var(--font-mono);
    font-size: 0.84rem;
    line-height: 1.6;
    overflow-x: auto;
}
.term-line { white-space: pre; }
.term-out { color: #aaeeaa; }
.term .prompt { color: #9eeeee; margin-right: 6px; }
.term .cmd { color: #ffffff; }
.term .caret {
    display: inline-block;
    width: 8px;
    height: 1em;
    background: var(--c-cyan);
    margin-left: 2px;
    vertical-align: middle;
    animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ---- Links list ---- */
.links { list-style: none; }
.links li {
    font-size: 0.85rem;
    padding: 6px 0;
    border-bottom: 1px dotted var(--c-comment);
}
.links li:last-child { border-bottom: none; }
.lnum {
    color: var(--c-comment);
    margin-right: 6px;
    font-family: var(--font-mono);
}
.links em {
    font-style: italic;
}

/* ---- Acme footer ---- */
.acme {
    background: var(--c-yellow);
    color: var(--c-ink);
    border-top: 1px solid var(--c-ink);
}
.acme-tag {
    display: flex;
    align-items: center;
    gap: 14px;
    background: var(--c-cyan);
    border-bottom: 1px solid var(--c-ink);
    padding: 4px 10px;
    font-family: var(--font-sans);
    font-size: 0.78rem;
    font-weight: 500;
}
.acme-cmd {
    cursor: pointer;
    padding: 1px 4px;
    user-select: none;
}
.acme-cmd:hover {
    background: var(--c-ink);
    color: var(--c-cyan);
}
.acme-tag-spacer { flex: 1; }

.acme-body {
    padding: 12px 16px 18px;
    font-family: var(--font-mono);
    font-size: 0.86rem;
}
.acme-line {
    padding: 3px 0;
}
.acme-prompt {
    color: var(--c-comment);
    font-weight: 700;
    margin-right: 6px;
}
.acme-tip {
    color: var(--c-comment);
    font-style: italic;
}
.acme-feedback {
    margin-top: 6px;
    padding-top: 8px;
    border-top: 1px solid var(--c-ink);
    color: var(--c-ink);
    font-weight: 700;
}

/* ---- Cursor textures ---- */
a, .acme-cmd, .rio-menu, .pane[data-clickable] {
    cursor: pointer;
}

/* ---- Selection ---- */
::selection {
    background: var(--c-yellow);
    color: var(--c-ink);
}