:root {
    --bg: #14161a;
    --panel: #1c1f26;
    --panel-hover: #242832;
    --text: #e6e8ec;
    --muted: #8b93a3;
    --accent: #5aa9ff;
    --border: #2a2f3a;
    --danger: #ff6b6b;
    --ok: #4cc38a;
    --radius: 8px;
    --sidebar-w: 300px;
    --topbar-h: 52px;
}

@media (prefers-color-scheme: light) {
    :root {
        --bg: #f6f7f9;
        --panel: #ffffff;
        --panel-hover: #eef1f6;
        --text: #1b1e24;
        --muted: #5d6675;
        --border: #dde1e8;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 15px/1.5 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: inherit; text-decoration: none; }
.muted { color: var(--muted); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .875em; }

input:focus-visible, button:focus-visible, a:focus-visible, summary:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ------------------------------------------------------------------ login */
.login-page { display: grid; place-items: center; min-height: 100vh; padding: 1rem; }

.login-card {
    width: 100%;
    max-width: 360px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
}

.login-card h1 { margin: 0 0 .25rem; font-size: 1.25rem; letter-spacing: .04em; }
.login-card p { margin: 0 0 1.5rem; font-size: .875rem; }

label { display: block; margin: 1rem 0 .35rem; font-size: .8125rem; color: var(--muted); }

input[type=text], input[type=password], input[type=search] {
    width: 100%;
    padding: .6rem .7rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 1rem;
}

button {
    padding: .55rem 1rem;
    background: var(--accent);
    color: #08111d;
    border: 0;
    border-radius: 6px;
    font-size: .9375rem;
    font-weight: 600;
    cursor: pointer;
}

.login-card button { margin-top: 1.5rem; width: 100%; }
button.danger { background: var(--danger); color: #1a0505; }

.alert, .ok {
    margin-bottom: 1rem;
    padding: .6rem .7rem;
    border-radius: 6px;
    font-size: .875rem;
}

.alert {
    background: color-mix(in srgb, var(--danger) 15%, transparent);
    border: 1px solid var(--danger);
    color: var(--danger);
}

.ok {
    background: color-mix(in srgb, var(--ok) 15%, transparent);
    border: 1px solid var(--ok);
    color: var(--ok);
}

/* ----------------------------------------------------------------- chrome */
.topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 1rem;
    height: var(--topbar-h);
    padding: 0 1rem;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
}

.brand { font-weight: 700; letter-spacing: .05em; }

.topnav {
    display: flex;
    align-items: center;
    gap: .8rem;
    margin-left: auto;
    font-size: .8125rem;
}

.topnav a { color: var(--accent); }

.topnav button, .logout button {
    padding: .3rem .7rem;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--muted);
    font-weight: 400;
    font-size: .8125rem;
}

.drawer-toggle {
    display: none;
    padding: .25rem .55rem;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    font-size: 1rem;
}

/* ------------------------------------------------------------------ shell */
.shell {
    display: grid;
    grid-template-columns: var(--sidebar-w) 1fr;
    align-items: start;
}

.sidebar {
    position: sticky;
    top: var(--topbar-h);
    height: calc(100vh - var(--topbar-h));
    overflow-y: auto;
    padding: .75rem .5rem 2rem;
    background: var(--panel);
    border-right: 1px solid var(--border);
}

.content { min-width: 0; padding: 0 1rem 3rem; }

/* ------------------------------------------------------------------- tree */
.tree, .tree ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.tree ul { padding-left: .85rem; }

.node-row {
    display: flex;
    align-items: center;
    gap: .2rem;
    border-radius: 5px;
    padding: .15rem .3rem;
}

.node-row:hover { background: var(--panel-hover); }
.node-row.current { background: color-mix(in srgb, var(--accent) 18%, transparent); }

.node-row > a {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: .875rem;
    padding: .1rem 0;
}

.caret {
    flex: 0 0 1.1rem;
    padding: 0;
    background: none;
    border: 0;
    color: var(--muted);
    font-size: .75rem;
    line-height: 1;
    cursor: pointer;
}

.caret.placeholder { visibility: hidden; cursor: default; }

/* --------------------------------------------------------------- crumbs */
.crumbs { padding: .75rem 0; font-size: .875rem; color: var(--muted); word-break: break-word; }
.crumbs a { color: var(--accent); }
.crumbs .sep { margin: 0 .4rem; opacity: .5; }

.filterbar {
    display: flex;
    align-items: center;
    gap: .75rem;
    margin-bottom: .75rem;
}

.filterbar input { flex: 1; }
.filterbar .count { font-size: .8125rem; white-space: nowrap; }

.empty { padding: 2rem 0; }

/* ---------------------------------------------------------------- listing */
.listing {
    list-style: none;
    margin: 0;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--panel);
}

.row {
    display: grid;
    grid-template-columns: 1fr auto auto auto;
    align-items: center;
    gap: .75rem;
    padding: .55rem .8rem;
    border-bottom: 1px solid var(--border);
}

.row:last-child { border-bottom: 0; }
.row:hover { background: var(--panel-hover); }
.row[hidden] { display: none; }

.row > a:first-child {
    display: flex;
    align-items: center;
    gap: .6rem;
    min-width: 0;
}

.icon { flex: 0 0 1.2rem; text-align: center; color: var(--muted); }
.dir .icon, .up .icon { color: var(--accent); }
.kind-video .icon { color: #ff8f5a; }
.kind-audio .icon { color: #b98cff; }

.name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.size, .date {
    font-size: .8125rem;
    color: var(--muted);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.dl { color: var(--muted); padding: 0 .3rem; font-size: 1.1rem; line-height: 1; }
.dl:hover { color: var(--accent); }

.row.dir, .row.up { grid-template-columns: 1fr; }

/* ------------------------------------------------------------------ admin */
.admin { max-width: 900px; margin: 0 auto; padding: 1rem 1rem 4rem; }
.admin h1 { font-size: 1.4rem; }
.admin h2 { font-size: 1rem; margin: 0 0 .75rem; }

.card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin-bottom: 1.25rem;
}

.card > p { margin-top: 0; font-size: .875rem; }

form.inline {
    display: flex;
    align-items: center;
    gap: .5rem;
    flex-wrap: wrap;
}

form.inline label { margin: 0; }
form.inline input[type=text], form.inline input[type=password] { width: auto; flex: 1 1 12rem; }

.check {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    margin: 0;
    font-size: .8125rem;
    color: var(--text);
}

.check input { width: auto; }

.secret {
    display: inline-block;
    padding: .3rem .5rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 5px;
    letter-spacing: .08em;
}

.secret.break { word-break: break-all; letter-spacing: 0; }

.modules { list-style: none; padding: 0; margin: 1rem 0 0; font-size: .875rem; }
.modules li { padding: .2rem 0; }

.user {
    border-top: 1px solid var(--border);
    padding: 1rem 0;
}

.user:first-of-type { border-top: 0; }

.user header {
    display: flex;
    align-items: center;
    gap: .6rem;
    flex-wrap: wrap;
    margin-bottom: .6rem;
    font-size: .875rem;
}

.tag {
    padding: .1rem .45rem;
    background: color-mix(in srgb, var(--accent) 20%, transparent);
    border-radius: 999px;
    font-size: .6875rem;
    text-transform: uppercase;
    letter-spacing: .05em;
}

.tag.off { background: color-mix(in srgb, var(--danger) 20%, transparent); color: var(--danger); }

.grants .grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: .3rem .75rem;
    margin-bottom: .75rem;
}

.actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: .75rem; }

/* ------------------------------------------------------------ media modal */
.player-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .85);
    display: grid;
    place-items: center;
    padding: 1rem;
    z-index: 50;
}

.player-backdrop video, .player-backdrop audio {
    width: 100%;
    max-width: 1100px;
    max-height: 85vh;
    background: #000;
    border-radius: var(--radius);
}

.player-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--panel);
    color: var(--text);
    border: 1px solid var(--border);
}

/* ----------------------------------------------------------------- mobile */
@media (max-width: 820px) {
    .shell { grid-template-columns: 1fr; }

    .drawer-toggle { display: block; }

    .sidebar {
        position: fixed;
        top: var(--topbar-h);
        left: 0;
        width: min(85vw, 340px);
        border-right: 1px solid var(--border);
        transform: translateX(-100%);
        transition: transform .18s ease-out;
        z-index: 30;
    }

    .sidebar.open { transform: translateX(0); box-shadow: 0 0 40px rgba(0, 0, 0, .4); }

    .node-row > a { font-size: .9375rem; padding: .3rem 0; }

    .row { grid-template-columns: 1fr auto auto; }
    .date { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    .sidebar { transition: none; }
}