/* diff.chromoshub.ru — text comparison */
:root {
    --bg: #0d1117;
    --bg-2: #161b22;
    --bg-3: #1c2430;
    --panel: #10151d;
    --line: #26303c;
    --line-2: #313d4d;
    --txt: #e6edf3;
    --txt-2: #9aa7b4;
    --txt-3: #6b7684;
    --accent: #59b0ff;
    --accent-2: #2f81f7;
    --ok: #3fb950;
    --err: #f85149;
    --warn: #d29922;
    --ins-bg: rgba(63, 185, 80, .16);
    --ins-hl: rgba(63, 185, 80, .38);
    --del-bg: rgba(248, 81, 73, .15);
    --del-hl: rgba(248, 81, 73, .36);
    --chg-bg: rgba(210, 153, 34, .10);
    --mono: "JetBrains Mono", "Cascadia Code", "Fira Code", "DejaVu Sans Mono", "Consolas", monospace;
    --ui: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --topbar-h: 54px;
}
:root[data-theme="light"] {
    --bg: #f4f6fa;
    --bg-2: #ffffff;
    --bg-3: #eef1f6;
    --panel: #ffffff;
    --line: #dde3ec;
    --line-2: #c8d1de;
    --txt: #16202b;
    --txt-2: #52616f;
    --txt-3: #808d9b;
    --accent: #1f6feb;
    --accent-2: #1a5fd0;
    --ok: #1a7f37;
    --err: #cf222e;
    --warn: #9a6700;
    --ins-bg: rgba(26, 127, 55, .13);
    --ins-hl: rgba(26, 127, 55, .30);
    --del-bg: rgba(207, 34, 46, .11);
    --del-hl: rgba(207, 34, 46, .26);
    --chg-bg: rgba(154, 103, 0, .09);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { min-height: 100%; }
body {
    font-family: var(--ui); background: var(--bg); color: var(--txt);
    font-size: 14px; line-height: 1.5;
}

/* ---- topbar ---- */
.topbar {
    height: var(--topbar-h); display: flex; align-items: center; justify-content: space-between;
    padding: 0 16px; background: var(--bg-2); border-bottom: 1px solid var(--line);
    position: sticky; top: 0; z-index: 20;
}
.brand { display: flex; align-items: center; gap: 11px; }
.brand__mark {
    width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center;
    background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff;
}
.brand__mark svg { width: 20px; height: 20px; }
.brand__text { display: flex; flex-direction: column; line-height: 1.2; }
.brand__name { font-weight: 600; font-size: 14px; }
.brand__host { font-family: var(--mono); font-size: 11px; color: var(--txt-3); }
.topbar__actions { display: flex; align-items: center; gap: 10px; }
.lang { display: inline-flex; border: 1px solid var(--line-2); border-radius: 8px; overflow: hidden; }
.lang__btn {
    font-family: var(--mono); font-size: 11px; font-weight: 600; height: 30px;
    padding: 0 9px; border: 0; background: var(--bg-3); color: var(--txt-2); cursor: pointer;
}
.lang__btn + .lang__btn { border-left: 1px solid var(--line-2); }
.lang__btn:hover { color: var(--accent); }
.lang__btn.is-active { background: var(--accent); color: #fff; }
.icon-btn {
    width: 32px; height: 32px; display: grid; place-items: center; border-radius: 8px;
    border: 1px solid var(--line-2); background: var(--bg-3); color: var(--txt-2); cursor: pointer;
}
.icon-btn svg { width: 17px; height: 17px; }
.icon-btn:hover { color: var(--accent); border-color: var(--accent); }
.icon-btn .i-moon { display: none; }
:root[data-theme="light"] .icon-btn .i-sun { display: none; }
:root[data-theme="light"] .icon-btn .i-moon { display: block; }

/* ---- toolbar ---- */
.toolbar {
    display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
    padding: 10px 16px; background: var(--bg-2); border-bottom: 1px solid var(--line);
}
.check { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; color: var(--txt-2); cursor: pointer; user-select: none; }
.check input { accent-color: var(--accent); width: 15px; height: 15px; }
.toolbar__spacer { flex: 1 1 auto; }
.btn {
    height: 32px; padding: 0 12px; border-radius: 8px; cursor: pointer;
    font-family: var(--ui); font-size: 13px; font-weight: 500;
    border: 1px solid var(--line-2); background: var(--bg-3); color: var(--txt);
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn--menu.is-open { border-color: var(--accent); color: var(--accent); }

/* segmented layout control */
.seg { display: inline-flex; align-items: center; gap: 8px; }
.seg__lbl { font-size: 13px; color: var(--txt-2); }
.seg { border: 1px solid var(--line-2); border-radius: 8px; padding: 3px; background: var(--bg-3); gap: 2px; }
.seg .seg__lbl { padding-left: 6px; }
.seg__btn {
    height: 24px; padding: 0 12px; border: 0; border-radius: 6px; cursor: pointer;
    font-family: var(--ui); font-size: 12px; font-weight: 500; background: transparent; color: var(--txt-2);
}
.seg__btn:hover { color: var(--accent); }
.seg__btn.is-active { background: var(--accent); color: #fff; }

/* transform dropdown */
.menu { position: relative; }
.menu__caret { font-size: 10px; opacity: .8; }
.menu__pop {
    position: absolute; top: calc(100% + 6px); left: 0; z-index: 30; min-width: 260px;
    display: flex; flex-direction: column; gap: 10px; padding: 12px 14px;
    background: var(--bg-2); border: 1px solid var(--line-2); border-radius: 10px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, .35);
}
.menu__pop[hidden] { display: none; }
:root[data-theme="light"] .menu__pop { box-shadow: 0 12px 30px rgba(20, 30, 50, .15); }

/* ---- layout ---- */
.workspace { padding: 16px; display: flex; flex-direction: column; gap: 14px; max-width: 1400px; margin: 0 auto; }
.inputs { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.pane { position: relative; display: flex; flex-direction: column; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.pane.is-drop { border-color: var(--accent); }
.drop-hint {
    position: absolute; inset: 0; display: none; place-items: center; text-align: center;
    padding: 16px; pointer-events: none; z-index: 5;
    background: color-mix(in srgb, var(--accent) 14%, var(--panel));
    border: 2px dashed var(--accent); border-radius: 10px;
    color: var(--accent); font-weight: 600; font-size: 14px;
}
.pane.is-drop .drop-hint { display: grid; }
.pane__head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 9px 14px; font-size: 12px; font-weight: 600; color: var(--txt-2);
    border-bottom: 1px solid var(--line); background: var(--bg-2);
}
.pane__meta { font-family: var(--mono); font-size: 11px; font-weight: 400; color: var(--txt-3); }
.input {
    width: 100%; min-height: 220px; resize: vertical; border: 0; outline: none;
    font-family: var(--mono); font-size: 13px; line-height: 1.6;
    padding: 12px 14px; background: var(--panel); color: var(--txt); tab-size: 4;
}
.input::placeholder { color: var(--txt-3); }

/* ---- similarity summary ---- */
.summary {
    display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
    background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 16px 20px;
}
.summary[hidden] { display: none; }
.gauge { flex: 0 0 auto; min-width: 200px; }
.gauge__num { display: flex; align-items: baseline; gap: 3px; font-family: var(--mono); font-weight: 700; }
.gauge__num #ratioVal { font-size: 44px; line-height: 1; color: var(--accent); }
.gauge__pct { font-size: 20px; color: var(--txt-2); }
.gauge__lbl { font-size: 12px; color: var(--txt-2); margin: 4px 0 8px; }
.gauge__bar { height: 8px; border-radius: 999px; background: var(--bg-3); overflow: hidden; }
.gauge__fill { height: 100%; width: 0; border-radius: 999px; background: var(--accent); transition: width .25s ease, background .25s ease; }
.metrics { flex: 1 1 260px; display: grid; grid-template-columns: repeat(3, minmax(90px, 1fr)); gap: 10px 14px; }
.metric { display: flex; flex-direction: column; gap: 2px; }
.metric--sep { border-top: 1px dashed var(--line-2); padding-top: 8px; }
.metrics .metric:nth-child(4) ~ .metric { border-top: 1px dashed var(--line-2); padding-top: 8px; }
.metric__k { font-size: 11px; color: var(--txt-3); text-transform: uppercase; letter-spacing: .04em; }
.metric__k--ins { color: var(--ok); }
.metric__k--del { color: var(--err); }
.metric__k--chg { color: var(--warn); }
.metric__v { font-family: var(--mono); font-size: 17px; font-weight: 600; }

/* ---- diff view ---- */
.pane--diff { min-height: 120px; }
.diff { overflow: auto; font-family: var(--mono); font-size: 13px; line-height: 1.55; }
.diff__placeholder { padding: 20px; color: var(--txt-3); font-family: var(--ui); }
.diff__identical { padding: 18px 20px; color: var(--ok); font-family: var(--ui); font-weight: 500; }
.drow { display: grid; grid-template-columns: 3.2em minmax(0, 1fr) 3.2em minmax(0, 1fr); }
.drow + .drow { border-top: 1px solid color-mix(in srgb, var(--line) 55%, transparent); }
.dnum {
    text-align: right; padding: 1px 8px; color: var(--txt-3); user-select: none;
    background: var(--bg-2); border-right: 1px solid var(--line);
    -webkit-user-select: none;
}
.dtext { padding: 1px 10px; white-space: pre-wrap; word-break: break-word; overflow-wrap: anywhere; }
.dtext.cell--del { background: var(--del-bg); }
.dtext.cell--ins { background: var(--ins-bg); }
.dtext.cell--chg { background: var(--chg-bg); }
.dtext.cell--empty { background: repeating-linear-gradient(135deg, transparent, transparent 6px, color-mix(in srgb, var(--line) 40%, transparent) 6px, color-mix(in srgb, var(--line) 40%, transparent) 7px); }
.seg--del { background: var(--del-hl); border-radius: 2px; }
.seg--ins { background: var(--ins-hl); border-radius: 2px; }

/* unified layout */
.urow { display: grid; grid-template-columns: 3em 3em 1.4em minmax(0, 1fr); }
.urow + .urow { border-top: 1px solid color-mix(in srgb, var(--line) 55%, transparent); }
.usign { text-align: center; user-select: none; color: var(--txt-3); background: var(--bg-2); border-right: 1px solid var(--line); }
.urow.u-del .dtext, .urow.u-del .usign { background: var(--del-bg); }
.urow.u-ins .dtext, .urow.u-ins .usign { background: var(--ins-bg); }
.urow.u-del .usign { color: var(--err); }
.urow.u-ins .usign { color: var(--ok); }

/* collapsed unchanged block */
.dcollapse {
    padding: 4px 14px; font-family: var(--ui); font-size: 12px; color: var(--txt-3);
    background: var(--bg-2); text-align: center; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}

/* disable line wrap */
.diff.nowrap .dtext { white-space: pre; overflow-x: auto; }

/* ---- responsive ---- */
@media (max-width: 820px) {
    .inputs { grid-template-columns: 1fr; }
    .brand__name { display: none; }
    .summary { gap: 16px; }
    .drow { grid-template-columns: 2.4em minmax(0, 1fr) 2.4em minmax(0, 1fr); }
    .urow { grid-template-columns: 2.4em 2.4em 1.2em minmax(0, 1fr); }
    .dnum { padding: 1px 5px; }
    .dtext { padding: 1px 6px; }
    .diff { font-size: 12px; }
    .toolbar { gap: 10px; }
}