/* PCC Web — minimal styling for a serial companion.
   Dark-first aesthetic (matching the clock's "dark workshop" look) but
   following the system preference — prefers-color-scheme: light swaps
   the palette entirely. Every colour comes from a CSS variable so the
   only thing the light override does is redefine that block. */

:root {
    color-scheme: dark light;
    /* Default palette = dark */
    --bg: #0e1218;
    --surface: #161b24;
    --surface-2: #1d242f;
    --border: #2a323f;
    --text: #e9edf2;
    --text-dim: #9aa5b3;
    --accent: #4da3ff;
    --accent-dim: #2a6fb5;
    --ok: #35c16a;
    --warn: #ffb74d;
    --danger: #ff5a4e;
    --polar-bg: #12161e;
    --polar-grid: rgba(255,255,255,0.12);
    --polar-spoke: rgba(255,255,255,0.08);
    --polar-label: rgba(255,255,255,0.55);
    --polar-label-dim: rgba(255,255,255,0.35);
    --polar-sat-label: rgba(255,255,255,0.85);
    --info-bg: rgba(77,163,255,0.08);
    --info-border: rgba(77,163,255,0.35);
    --info-text: #9ecbff;
    --monitor-bg: #0a0d12;
    --monitor-tx: #7acbff;
    --monitor-rx: #b5bcc6;
    --shadow-strong: 0 6px 18px rgba(0,0,0,0.4);
}

@media (prefers-color-scheme: light) {
    :root {
        color-scheme: light dark;
        --bg: #f5f7fb;
        --surface: #ffffff;
        --surface-2: #eef1f7;
        --border: #d6dde7;
        --text: #1a1f2a;
        --text-dim: #566274;
        --accent: #1f6fcf;
        --accent-dim: #5ea2ea;
        --ok: #248a4b;
        --warn: #c77700;
        --danger: #c13a2f;
        --polar-bg: #eaeef5;
        --polar-grid: rgba(26,31,42,0.22);
        --polar-spoke: rgba(26,31,42,0.14);
        --polar-label: rgba(26,31,42,0.7);
        --polar-label-dim: rgba(26,31,42,0.5);
        --polar-sat-label: rgba(26,31,42,0.88);
        --info-bg: rgba(31,111,207,0.08);
        --info-border: rgba(31,111,207,0.3);
        --info-text: #14457f;
        --monitor-bg: #f9fafc;
        --monitor-tx: #0f4f8b;
        --monitor-rx: #222733;
        --shadow-strong: 0 4px 12px rgba(17,24,39,0.08);
    }
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    background: var(--bg);
    color: var(--text);
    font: 14px/1.45 -apple-system, BlinkMacSystemFont, 'SF Pro Text', system-ui, sans-serif;
}

body {
    display: grid;
    grid-template-rows: auto 1fr;
}

header.topbar {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 10px 16px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

header .brand {
    font-weight: 400;
    letter-spacing: 0.02em;
    color: var(--text-dim);
}
header .brand strong {
    color: var(--text);
    font-weight: 700;
    letter-spacing: 0.04em;
}
header .brand .sub {
    margin-left: 8px;
}
header .brand .tag {
    display: inline-block;
    margin-left: 6px;
    padding: 1px 7px;
    border-radius: 4px;
    background: var(--info-bg);
    color: var(--info-text);
    border: 1px solid var(--info-border);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.04em;
    vertical-align: 1px;
}

header .spacer { flex: 1; }

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-dim);
}
.status-pill .dot {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: var(--danger);
}
.status-pill.connected .dot { background: var(--ok); }
.status-pill.connected { color: var(--text); }

.layout {
    display: grid;
    grid-template-columns: 200px 1fr;
    min-height: 0;
}

nav.sidebar {
    background: var(--surface);
    border-right: 1px solid var(--border);
    padding: 10px 8px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

nav.sidebar button {
    background: none;
    border: none;
    padding: 8px 12px;
    color: var(--text-dim);
    border-radius: 6px;
    text-align: left;
    font: inherit;
    cursor: pointer;
}
nav.sidebar button:hover { color: var(--text); background: var(--surface-2); }
nav.sidebar button.active {
    color: var(--text);
    background: var(--surface-2);
    box-shadow: inset 2px 0 0 var(--accent);
}

main {
    padding: 22px 28px;
    overflow: auto;
    min-width: 0;
}

.panel {
    display: none;
}
.panel.active {
    display: block;
}

h1.panel-title {
    font-size: 20px;
    margin: 0 0 4px;
}
.panel-sub {
    color: var(--text-dim);
    margin: 0 0 18px;
    font-size: 13px;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 18px;
    margin-bottom: 16px;
}
.card h2 {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dim);
    margin: 0 0 12px;
}

/* Call-out card used for "reduced feature set" / info messaging —
   same corner radius as .card but with a coloured left edge and a
   tinted background, so it reads as a notice rather than a section. */
.info-card {
    background: var(--info-bg);
    border-color: var(--info-border);
    color: var(--text);
    position: relative;
    padding-left: 20px;
}
.info-card::before {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: var(--accent);
    border-top-left-radius: 10px;
    border-bottom-left-radius: 10px;
}
.info-card h2 { color: var(--info-text); }
.info-card a { color: var(--accent); }
ul.compact { margin: 0; padding-left: 20px; line-height: 1.7; }

.row {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}
.row + .row { margin-top: 10px; }
.row label {
    color: var(--text-dim);
    min-width: 110px;
    font-size: 13px;
}
.row.vstack {
    flex-direction: column;
    align-items: stretch;
}
.row.vstack label { min-width: auto; }

/* Inline toggle-group row: each label sits with its checkbox, no forced
   min-width column, so the flags pack naturally. */
.row.toggles label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-width: auto;
    color: var(--text);
    user-select: none;
    font-size: 13px;
}

input[type="text"], input[type="number"], input[type="datetime-local"], select, textarea {
    background: var(--surface-2);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 7px 10px;
    font: inherit;
    min-width: 0;
}
input[type="text"]:focus, input[type="number"]:focus, input[type="datetime-local"]:focus,
select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent);
}
textarea {
    min-height: 140px;
    font: 12px/1.45 ui-monospace, SFMono-Regular, Menlo, monospace;
    white-space: pre;
    width: 100%;
    resize: vertical;
}

button.btn {
    background: var(--accent);
    border: none;
    color: #fff;
    padding: 8px 16px;
    border-radius: 6px;
    font: inherit;
    cursor: pointer;
}
button.btn:hover { background: var(--accent-dim); }
button.btn[disabled] { background: var(--surface-2); color: var(--text-dim); cursor: not-allowed; }
button.btn.ghost {
    background: var(--surface-2);
    color: var(--text);
    border: 1px solid var(--border);
}
button.btn.ghost:hover { background: var(--border); }
button.btn.danger { background: var(--danger); }
button.btn.danger:hover { background: #ff766c; }

.kbd {
    font: 12px ui-monospace, Menlo, monospace;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 1px 5px;
    color: var(--text);
}

.muted { color: var(--text-dim); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

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

/* Connect panel */
.connect-card .lede {
    font-size: 15px;
    margin-bottom: 14px;
}
.browser-warn {
    background: rgba(255,183,77,0.08);
    border: 1px solid rgba(255,183,77,0.4);
    color: #ffcc80;
    padding: 10px 14px;
    border-radius: 8px;
    margin-bottom: 14px;
}
@media (prefers-color-scheme: light) {
    .browser-warn { color: #8a5a00; background: rgba(199,119,0,0.08); border-color: rgba(199,119,0,0.35); }
}

/* Satellites panel */
.sat-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 16px;
    align-items: start;
}
.polar-canvas-wrap {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    aspect-ratio: 1 / 1;
    min-height: 420px;
    max-width: 640px;
    margin-inline: auto;
}
.polar-canvas-wrap canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.gps-info dl,
.sky-stats dl {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 6px 14px;
    margin: 0;
}
.gps-info dt,
.sky-stats dt {
    color: var(--text-dim);
    font-size: 12px;
}
.gps-info dd,
.sky-stats dd {
    margin: 0;
    font-family: ui-monospace, Menlo, monospace;
}

/* Satellite legend */
.legend {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 16px;
    font-size: 12px;
    color: var(--text-dim);
}
.legend .swatch {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 999px;
    margin-right: 5px;
    vertical-align: middle;
}

/* Globe panel */
.globe-wrap {
    position: relative;
    background: #000;
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    aspect-ratio: 16 / 10;
    min-height: 420px;
    box-shadow: var(--shadow-strong);
}
.globe-wrap iframe {
    border: none;
    width: 100%;
    height: 100%;
    display: block;
    background: #000;
}

/* Monitor panel */
.monitor-log {
    background: var(--monitor-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px;
    height: 50vh;
    overflow: auto;
    font: 12px/1.4 ui-monospace, Menlo, monospace;
    white-space: pre-wrap;
    color: var(--text-dim);
}
.monitor-log .tx { color: var(--monitor-tx); }
.monitor-log .rx { color: var(--monitor-rx); }
.monitor-log .err { color: var(--danger); }

/* file:// fallback banner */
.file-warn {
    margin: 40px auto;
    max-width: 620px;
    background: rgba(255,183,77,0.08);
    border: 1px solid rgba(255,183,77,0.4);
    border-radius: 10px;
    padding: 20px 24px;
    color: #ffcc80;
}
.file-warn h2 {
    margin: 0 0 10px;
    font-size: 18px;
    color: #ffcc80;
}
.file-warn p { margin: 8px 0; }
.file-warn pre {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 10px 12px;
    color: var(--text);
    overflow-x: auto;
    font-size: 13px;
}
.file-warn .muted { color: #c9a66b; }
html.file-protocol header.topbar,
html.file-protocol .layout { display: none; }

/* Small-screen fallback */
@media (max-width: 720px) {
    .layout { grid-template-columns: 1fr; }
    nav.sidebar {
        flex-direction: row;
        overflow-x: auto;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
    nav.sidebar button { white-space: nowrap; }
    .sat-layout { grid-template-columns: 1fr; }
    .row.toggles { gap: 12px; }
}