/* Tentacle Firmware for Octane
   (c) Fred's Lab 2026
   MIT License - see LICENSE.txt
   style.css => layout and theme of the patch editor, in Fred's Lab colors */

:root {
    /* Fred's Lab palette (fredslab.net) */
    --fl-black: #1e1e1e;
    --fl-charcoal: #282828;
    --fl-dark: #333333;
    --fl-grey: #444444;
    --fl-mid: #6c6c6c;
    --fl-light: #cccccc;
    --fl-white: #fffefc;
    --fl-orange: #ffa500;
    --fl-red: #c10000;
    --fl-red-hover: #db1414;

    --bg: var(--fl-charcoal);
    --surface: var(--fl-grey);
    --surface-sunken: var(--fl-dark);
    --bar: var(--fl-mid);
    --border: #555555;
    --text: var(--fl-white);
    --text-muted: #a8a8a8;
    --accent: var(--fl-orange);
    --primary: var(--fl-red);
    --primary-hover: var(--fl-red-hover);
    --error: #ff6b5a;

    --jack: var(--fl-orange);
    --jack-bg: #3d3220;
    --usb: var(--fl-light);
    --usb-bg: #3a3a3a;
    --null: #8a8a8a;
    --null-bg: var(--fl-dark);
    --block-bg: var(--fl-dark);
    --block-border: #8f8f8f;
    --block-head: var(--fl-mid);
    --wire: #9a9a9a;

    --mono: Consolas, ui-monospace, Menlo, "DejaVu Sans Mono", monospace;
    --sans: Arial, "Helvetica Neue", Helvetica, sans-serif;
    color-scheme: dark;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
    margin: 0;
    display: flex;
    flex-direction: column;
    background: var(--bg);
    color: var(--text);
    font: 14px/1.45 var(--sans);
}

button, input { font: inherit; color: inherit; }

.visually-hidden {
    position: absolute;
    width: 1px; height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

/* Top bar */

.topbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px 16px;
    padding: 10px 16px;
    background: var(--fl-black);
    border-bottom: 3px solid var(--fl-red);
}

.brand { display: flex; align-items: baseline; gap: 12px; min-width: 0; }
.brand-name {
    font: 700 22px/1 var(--mono);
    letter-spacing: 0.02em;
}
.brand-sub { color: var(--fl-light); font: 12px var(--mono); }

.toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }

.toolbar button {
    padding: 6px 14px;
    border: 1px solid var(--fl-mid);
    border-radius: 3px;
    background: var(--fl-dark);
    cursor: pointer;
}
.toolbar button:hover { background: var(--fl-mid); }
.toolbar button.primary {
    background: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
    font-weight: 700;
}
.toolbar button.primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }

.name-field input {
    width: 180px;
    padding: 6px 10px;
    border: 1px solid var(--fl-mid);
    border-radius: 3px;
    background: var(--fl-charcoal);
    font: 13px var(--mono);
}

/* Workspace */

.workspace {
    flex: 1;
    min-height: 0;
    display: grid;
    grid-template-columns: minmax(340px, 2fr) 3fr;
    gap: 3px;
    background: var(--bg);
}

.pane {
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
    background: var(--surface);
}

.pane-title {
    padding: 4px 16px;
    font-size: 13px;
    font-weight: 700;
    color: #ffffff;
    background: var(--bar);
}

/* Block toolkit */

.toolkit {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
}
.toolkit-label { margin-right: 4px; font-size: 12px; color: var(--text-muted); }
.toolkit button {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 9px 3px 6px;
    border: 1px solid var(--fl-mid);
    border-radius: 3px;
    background: var(--fl-dark);
    font: 12px var(--mono);
    cursor: pointer;
}
.toolkit button:hover { border-color: var(--accent); }
.toolkit button .plus {
    display: inline-grid;
    place-items: center;
    width: 15px; height: 15px;
    border-radius: 2px;
    background: var(--fl-red);
    color: #ffffff;
    font: 700 13px/1 var(--sans);
}
.toolkit button:hover .plus { background: var(--fl-red-hover); }

/* Editor */

.editor {
    flex: 1;
    min-height: 0;
    display: flex;
    font: 400 12px/19px var(--mono);
}

.gutter {
    margin: 0;
    padding: 10px 8px 10px 12px;
    min-width: 44px;
    text-align: right;
    color: #7a7a7a;
    background: var(--fl-charcoal);
    overflow: hidden;
    user-select: none;
    font: inherit;
}

#editor {
    flex: 1;
    min-width: 0;
    margin: 0;
    padding: 10px 12px;
    border: 0;
    resize: none;
    background: var(--surface-sunken);
    color: #d4d4d2;
    caret-color: var(--accent);
    -webkit-font-smoothing: antialiased;
    font: inherit;
    tab-size: 4;
    white-space: pre;
    overflow: auto;
}
#editor::selection { background: #6b5320; }
#editor:focus-visible { outline-offset: -2px; }

/* Diagram */

.graph {
    flex: 1;
    min-height: 0;
    overflow: auto;
    padding: 16px;
}

.graph svg { display: block; margin: 0 auto; }

.graph-empty {
    margin: 40px auto;
    max-width: 320px;
    text-align: center;
    color: var(--text-muted);
}

.g-wire { fill: none; stroke: var(--wire); stroke-width: 1.5; }
.g-arrow { fill: var(--wire); }
.g-port-label { font: 11px var(--mono); fill: var(--fl-light); }

.g-term path { stroke-width: 1.5; }
.g-term text { font: 700 12px var(--sans); }
.g-term.jack path { fill: var(--jack-bg); stroke: var(--jack); }
.g-term.jack text { fill: var(--jack); }
.g-term.usb path { fill: var(--usb-bg); stroke: var(--usb); }
.g-term.usb text { fill: var(--usb); }
.g-term.null path { fill: var(--null-bg); stroke: var(--null); stroke-dasharray: 4 3; }
.g-term.null text { fill: var(--null); }

.g-block .g-body { fill: var(--block-bg); stroke: var(--block-border); stroke-width: 1.5; }
.g-block .g-head { fill: var(--block-head); }
.g-block.unknown .g-body { stroke-dasharray: 4 3; }
.g-block.unknown .g-head { fill: #555555; }
.g-block .g-name { font: 700 13px var(--sans); fill: #ffffff; }
.g-block .g-type { font: 700 11px var(--mono); fill: var(--accent); letter-spacing: 0.04em; }
.g-block .g-param { font: 11px var(--mono); fill: var(--fl-light); }

/* Problems: red is rejected by Octane, orange is accepted but probably a mistake */
.g-block.problem .g-body { stroke: var(--error); }
.g-block.problem .g-head { fill: var(--fl-red); }
.g-block .g-param.bad { fill: var(--error); font-weight: 700; }
.g-block .g-flag { font: 11px var(--sans); fill: var(--error); }
.g-stub { stroke-width: 1.5; stroke-dasharray: 3 3; }
.g-stub.error { stroke: var(--error); }
.g-stub.open { stroke: var(--accent); }
.g-stub-end { stroke-width: 1.5; fill: var(--surface); }
.g-stub-end.error { stroke: var(--error); }
.g-stub-end.open { stroke: var(--accent); }
.g-stub-label { font: 11px var(--sans); }
.g-stub-label.error { fill: var(--error); }
.g-stub-label.open { fill: var(--accent); }

/* Status bar and help */

.statusbar {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 5px 16px;
    font-size: 12px;
    color: var(--text-muted);
    background: var(--fl-black);
}
.status-right { display: flex; align-items: center; gap: 16px; min-width: 0; font-variant-numeric: tabular-nums; white-space: nowrap; }

.problems {
    max-width: 52vw;
    overflow: hidden;
    text-overflow: ellipsis;
    padding: 1px 8px;
    border: 1px solid transparent;
    border-radius: 3px;
    background: none;
    font-size: 12px;
    color: var(--text-muted);
    cursor: pointer;
}
.problems:disabled { cursor: default; }
.problems.error { color: #ffffff; background: var(--fl-red); }
.problems.note { color: var(--accent); border-color: var(--accent); }
.problems:not(:disabled):hover { filter: brightness(1.15); }

.gutter .error { color: var(--error); font-weight: 700; }
.gutter .note { color: var(--accent); }
#status-message.error { color: var(--error); }

.help {
    padding: 0 16px 8px;
    font-size: 13px;
    background: var(--fl-black);
    color: var(--fl-light);
}
.help summary { padding: 4px 0 2px; cursor: pointer; color: var(--text-muted); }
.help ol { margin: 6px 0; padding-left: 20px; max-width: 760px; }
.help p { margin: 6px 0; color: var(--text-muted); }
.help a { color: var(--accent); }
.help b { color: var(--fl-white); }
.help code { font-family: var(--mono); font-size: 12px; }

/* Narrow screens: editor above diagram */

@media (max-width: 760px) {
    .workspace {
        grid-template-columns: 1fr;
        grid-template-rows: minmax(320px, 1fr) minmax(260px, 1fr);
    }
    .brand-sub { display: none; }
    .name-field input { width: 130px; }
    .statusbar { flex-wrap: wrap; }
}