:root {
    --ink: #f5ecdf;
    --ink-dim: #c9b9a4;
    --accent: #d97706;
    --glass: rgba(24, 18, 13, 0.72);
    --paper: #fbfaf6;
    --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    --serif: Georgia, 'Times New Roman', serif;
    --sans: system-ui, -apple-system, 'Segoe UI', sans-serif;
}

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

html, body {
    height: 100%;
    overflow: hidden;
    background: #1a1410;
    color: var(--ink);
    font-family: var(--sans);
}

#office {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    display: block;
    touch-action: manipulation;
}

/* ---------- chrome ---------- */

.topbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    display: flex;
    align-items: baseline;
    gap: 16px;
    padding: 16px 22px;
    pointer-events: none;
    background: linear-gradient(rgba(20, 14, 10, 0.6), transparent);
}
.topbar a { pointer-events: auto; color: var(--ink); text-decoration: none; }
.name { font-size: 20px; font-weight: 700; letter-spacing: 0.02em; }
.name span { color: var(--accent); }
.status { font-size: 13px; color: var(--ink-dim); flex: 1; }
.conditions { display: flex; gap: 10px; pointer-events: auto; font-size: 12px; color: var(--ink-dim); }
.conditions select {
    font: 12px var(--sans);
    color: var(--ink);
    background: var(--glass);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 999px;
    padding: 3px 8px;
    margin-left: 4px;
    cursor: pointer;
}
.classic { font-size: 13px; color: var(--ink-dim) !important; border-bottom: 1px solid transparent; }
.classic:hover { border-color: var(--ink-dim); }

#loading {
    position: fixed;
    inset: 0;
    display: grid;
    place-items: center;
    background: #1a1410;
    font-family: var(--mono);
    color: var(--ink-dim);
    transition: opacity 0.8s 0.3s;
    z-index: 5;
}
body.ready #loading { opacity: 0; pointer-events: none; }

.hover-tag {
    position: fixed;
    top: 0; left: 0;
    padding: 6px 10px;
    border-radius: 6px;
    background: var(--glass);
    backdrop-filter: blur(6px);
    font-size: 13px;
    pointer-events: none;
    white-space: nowrap;
    border: 1px solid rgba(217, 119, 6, 0.4);
}

.hint {
    position: fixed;
    left: 50%;
    bottom: 76px;
    transform: translateX(-50%);
    font-size: 13px;
    color: var(--ink-dim);
    background: var(--glass);
    padding: 6px 12px;
    border-radius: 999px;
    pointer-events: none;
    animation: breathe 3s ease-in-out infinite;
}
@keyframes breathe { 50% { opacity: 0.55; } }

.back {
    position: fixed;
    top: 60px;
    left: 22px;
    z-index: 3;
    font: 14px var(--sans);
    color: var(--ink);
    background: var(--glass);
    border: 1px solid rgba(255, 255, 255, 0.12);
    padding: 8px 14px;
    border-radius: 999px;
    cursor: pointer;
}
.back:hover { border-color: var(--accent); }

.dock {
    position: fixed;
    left: 50%;
    bottom: 18px;
    transform: translateX(-50%);
    display: flex;
    gap: 4px;
    padding: 5px;
    border-radius: 999px;
    background: var(--glass);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    z-index: 3;
}
.dock button {
    font: 13px var(--sans);
    color: var(--ink-dim);
    background: none;
    border: 0;
    padding: 8px 14px;
    border-radius: 999px;
    cursor: pointer;
}
.dock button:hover { color: var(--ink); }
.dock button.active { background: var(--accent); color: #1a1410; font-weight: 600; }

/* ---------- panel (shared) ---------- */

.panel {
    position: fixed;
    inset: 64px 0 72px;
    display: grid;
    place-items: center;
    padding: 0 16px;
    z-index: 2;
    opacity: 0;
    transform: translateY(10px) scale(0.98);
    transition: opacity 0.35s, transform 0.35s;
    pointer-events: none;
}
.panel.open { opacity: 1; transform: none; }
.panel::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    background: radial-gradient(ellipse at center, rgba(20, 14, 10, 0.35), rgba(20, 14, 10, 0.75));
    backdrop-filter: blur(3px);
}
.panel[data-kind="book"]::before { background: linear-gradient(90deg, transparent 40%, rgba(20, 14, 10, 0.55)); backdrop-filter: none; }
.panel > #panel-body { pointer-events: auto; max-height: 100%; width: 100%; display: grid; place-items: center; }
.panel-close {
    position: absolute;
    top: -4px;
    right: 22px;
    width: 34px; height: 34px;
    border-radius: 50%;
    border: 0;
    background: var(--glass);
    color: var(--ink);
    font-size: 20px;
    cursor: pointer;
    pointer-events: auto;
}
.panel[data-kind="book"] { place-items: center end; padding-right: 6vw; }
.panel[data-kind="book"] > #panel-body { width: auto; }

/* ---------- laptop OS ---------- */

.os {
    width: min(920px, 100%);
    height: min(560px, calc(100vh - 150px));
    display: flex;
    flex-direction: column;
    background: #0d1117;
    color: #c9d1d9;
    border-radius: 12px;
    overflow: hidden;
    font: 14px/1.5 var(--mono);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6), 0 0 0 1px #30363d;
}
.os-titlebar { display: flex; align-items: center; gap: 12px; padding: 10px 14px; background: #161b22; border-bottom: 1px solid #30363d; }
.os-dots i { display: inline-block; width: 11px; height: 11px; border-radius: 50%; margin-right: 6px; background: #ff5f56; }
.os-dots i:nth-child(2) { background: #ffbd2e; }
.os-dots i:nth-child(3) { background: #27c93f; }
.os-title { color: #8b949e; font-size: 12px; }
.os-body { display: flex; flex: 1; min-height: 0; }
.os-side { width: 160px; padding: 12px 8px; border-right: 1px solid #30363d; display: flex; flex-direction: column; gap: 2px; }
.os-side button { text-align: left; font: inherit; color: #8b949e; background: none; border: 0; padding: 6px 10px; border-radius: 6px; cursor: pointer; }
.os-side button:hover { color: #c9d1d9; background: #161b22; }
.os-side button.active { color: #f0f6fc; background: #1f2630; }
.os-side span { display: inline-block; width: 18px; }
.os-main { flex: 1; overflow-y: auto; padding: 16px 20px; }
.os-prompt { color: #7ee787; margin-bottom: 12px; display: flex; flex-wrap: wrap; gap: 8px; align-items: baseline; }
.os-filters button { font: 12px var(--mono); color: #8b949e; background: none; border: 1px solid #30363d; border-radius: 4px; padding: 1px 6px; cursor: pointer; }
.os-filters button.on { color: #0d1117; background: #d2a8ff; border-color: #d2a8ff; }
.os-repo { display: grid; grid-template-columns: minmax(180px, 240px) 1fr; gap: 2px 16px; padding: 8px 10px; border-radius: 6px; color: inherit; text-decoration: none; }
.os-repo:hover { background: #161b22; }
.os-repo-name { color: #79c0ff; font-weight: 600; word-break: break-word; }
.os-repo-name.cat-ml { color: #d2a8ff; }
.os-repo-name.cat-cl { color: #79c0ff; }
.os-repo-name.cat-bk { color: #ffa657; }
.os-repo-desc { color: #c9d1d9; }
.os-repo-meta { grid-column: 2; color: #6e7681; font-size: 12px; }
.os-live { color: #7ee787; }
.os-commit { display: flex; flex-wrap: wrap; gap: 8px; padding: 4px 0; }
.os-hash { color: #ffa657; }
.os-branch { color: #79c0ff; }
.os-muted { color: #6e7681; }
.os-err { color: #ff7b72; }
.os-err a, .os-lab a { color: #79c0ff; }
.os-lab { list-style: none; margin-top: 12px; display: grid; gap: 10px; }
.os-lab a { font-weight: 600; margin-right: 8px; }

/* ---------- resume sheet ---------- */

.sheet {
    position: relative;
    width: min(760px, 100%);
    max-height: calc(100vh - 150px);
    overflow-y: auto;
    background: var(--paper);
    color: #1b1b1b;
    padding: 48px 56px;
    font: 14px/1.5 var(--serif);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
    border-radius: 2px;
}
.sheet header { text-align: center; margin-bottom: 10px; }
.sheet h1 { font-size: 30px; }
.sheet a { color: #1d4ed8; }
.sheet h2 { font-size: 15px; letter-spacing: 0.06em; text-transform: uppercase; border-bottom: 1.5px solid #222; margin: 20px 0 8px; padding-bottom: 2px; }
.sheet .row { display: flex; justify-content: space-between; gap: 16px; }
.sheet .row span { white-space: nowrap; font-style: italic; }
.sheet ul { padding-left: 20px; margin: 4px 0 10px; }
.sheet li { margin-bottom: 3px; }
.sheet-dl {
    position: sticky;
    top: 0;
    float: right;
    margin: -28px -36px 0 0;
    font: 600 13px var(--sans);
    color: #1a1410 !important;
    background: var(--accent);
    padding: 6px 12px;
    border-radius: 999px;
    text-decoration: none;
}

/* ---------- book card ---------- */

.book-card {
    display: flex;
    gap: 22px;
    width: min(460px, 100%);
    padding: 22px;
    background: #f4ecdc;
    color: #2a2018;
    border-radius: 6px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    font-family: var(--serif);
}
.book-cover {
    flex: 0 0 110px;
    height: 160px;
    background: var(--spine);
    color: var(--spine-ink, #f5ecd7);
    border-radius: 2px 6px 6px 2px;
    padding: 14px 10px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: inset 6px 0 0 rgba(0, 0, 0, 0.25), 4px 4px 0 #d8ccb4;
    font-weight: 700;
    font-size: 14px;
    line-height: 1.25;
}
.book-cover small { font-weight: 400; font-size: 11px; opacity: 0.85; }
.book-notes h2 { font-size: 19px; line-height: 1.2; }
.book-author { font-style: italic; color: #6b5a48; margin: 2px 0 6px; }
.book-stars { color: var(--accent); letter-spacing: 2px; margin-bottom: 10px; }
.book-notes p:last-child { font-size: 15px; line-height: 1.55; }

/* ---------- contact note ---------- */

.note-form {
    width: min(420px, 100%);
    background: #ffe066;
    color: #2a2018;
    padding: 28px 26px 22px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
    transform: rotate(-1.2deg);
    display: grid;
    gap: 10px;
}
.note-form h2 { font: 700 22px 'Marker Felt', 'Comic Sans MS', cursive; }
.note-form input, .note-form textarea {
    font: 15px var(--sans);
    background: transparent;
    border: 0;
    border-bottom: 1.5px solid rgba(42, 32, 24, 0.35);
    padding: 6px 2px;
    color: inherit;
    resize: vertical;
}
.note-form input:focus, .note-form textarea:focus { outline: none; border-color: #2a2018; }
.note-form button { justify-self: start; font: 600 15px var(--sans); background: #2a2018; color: #ffe066; border: 0; padding: 9px 18px; border-radius: 999px; cursor: pointer; }
.note-links { font-size: 13px; }
.note-links a { color: inherit; }

/* ---------- small screens ---------- */

@media (max-width: 700px) {
    .status { display: none; }
    .topbar { padding: 14px 16px; justify-content: space-between; flex-wrap: wrap; row-gap: 8px; }
    .conditions { order: 3; width: 100%; }
    .back { top: 84px; }
    .panel { inset: 124px 0 70px; }
    .back { left: 16px; }
    .panel-close { top: -42px; right: 16px; }
    .panel[data-kind="book"] { place-items: end center; padding: 0 16px; }
    .os-side { width: auto; flex-direction: row; border-right: 0; border-bottom: 1px solid #30363d; padding: 6px; overflow-x: auto; }
    .os-body { flex-direction: column; }
    .os-repo { grid-template-columns: 1fr; }
    .os-repo-meta { grid-column: 1; }
    .os { height: calc(100vh - 180px); }
    .sheet { padding: 28px 20px; max-height: calc(100vh - 180px); font-size: 13px; }
    .sheet .row { flex-direction: column; gap: 0; }
    .sheet-dl { margin: -12px -8px 0 0; }
    .book-card { flex-direction: column; align-items: center; text-align: center; }
    .book-cover { flex: none; width: 96px; height: 136px; font-size: 12px; text-align: left; }
    .os-side button { white-space: nowrap; }
    .dock { left: 16px; right: 16px; transform: none; justify-content: space-between; }
    .dock button { padding: 8px 6px; font-size: 12px; flex: 1; }
    .panel[data-kind="book"]::before { background: linear-gradient(transparent 40%, rgba(20, 14, 10, 0.6)); }
}

@media (prefers-reduced-motion: reduce) {
    .hint { animation: none; }
    .panel, #loading { transition: none; }
}