/* ============================================================
   CNC Feeds & Speeds — Instrument Cluster
   Cyan-on-dark · Inter (UI) + JetBrains Mono (data)
   ============================================================ */
:root {
    --bg: #0d1117;
    --bg-gradient-start: #0d1117;
    --bg-gradient-end: #10151c;
    --panel: #161b22;
    --surface-primary: #161b22;
    --surface-secondary: #1c2333;
    --panel-2: #1c2333;
    --surface-input: #1c2333;
    --elev: #21262d;
    --line: #30363d;
    --line-2: #3d444d;
    --border-primary: #30363d;
    --border-input: #3d444d;
    --glass-border: #30363d;
    --text: #e6edf3;
    --text-primary: #e6edf3;
    --text-secondary: #c9d1d9;
    --text-muted: #8b949e;
    --muted: #8b949e;
    --text-faint: #6e7681;
    --faint: #6e7681;
    --accent: #22d3ee;
    --cyan: #22d3ee;
    --accent-hover: #0891b2;
    --accent-heading: #22d3ee;
    --cyan-bright: #67e8f9;
    --cyan-deep: #0c4a6e;
    --cyan-glow: rgba(34, 211, 238, 0.18);
    --footer-link: #67e8f9;
    --safe: #34d399;
    --color-safe: #34d399;
    --warn: #fbbf24;
    --warning: #fbbf24;
    --danger: #f87171;
    --color-danger: #f87171;
    --color-danger-bg: rgba(248, 113, 113, 0.15);
    --inline-error-bg: rgba(248, 113, 113, 0.15);
    --tip-good: #34d399;
    --tip-warning: #fbbf24;
    --primary-gradient: linear-gradient(135deg, rgba(34,211,238,.16), rgba(12,74,110,.18));
    --primary-label-color: var(--cyan-bright);
    --compare-value-color: var(--cyan-bright);
    --output-field-bg: #1c2333;
    --output-field-border: #30363d;
    --output-field-color: var(--cyan-bright);
    --toast-bg: #1c2333;
    --tooltip-bg: #1c2333;
    --shadow-card: 0 1px 3px rgba(0,0,0,.4);
    --shadow-sm: 0 2px 8px rgba(0,0,0,.4);
    --radius-sm: 7px;
    --radius-md: 9px;
    --radius-lg: 12px;
    --radius-xl: 14px;
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
    --touch-min: 44px;
    --footer-h: 42px;
    --mono: 'JetBrains Mono', ui-monospace, 'Courier New', monospace;
    --ui: 'Inter', 'Segoe UI', system-ui, sans-serif;
}
.light-mode {
    --bg: #f0f4f8;
    --bg-gradient-start: #f0f4f8;
    --bg-gradient-end: #e2e8f0;
    --panel: #ffffff;
    --surface-primary: #ffffff;
    --surface-secondary: #f1f5f9;
    --panel-2: #f1f5f9;
    --surface-input: #ffffff;
    --elev: #e2e8f0;
    --line: #d6dde6;
    --line-2: #c3ccd6;
    --border-primary: #d6dde6;
    --border-input: #c3ccd6;
    --glass-border: #d6dde6;
    --text: #0f172a;
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #5b6776;
    --muted: #5b6776;
    --text-faint: #94a3b8;
    --faint: #94a3b8;
    --accent: #0891b2;
    --cyan: #0891b2;
    --accent-hover: #0e7490;
    --accent-heading: #0e7490;
    --cyan-bright: #0e7490;
    --cyan-deep: #0891b2;
    --cyan-glow: rgba(8, 145, 178, 0.18);
    --footer-link: #0e7490;
    --primary-gradient: linear-gradient(135deg, rgba(8,145,178,.12), rgba(8,145,178,.05));
    --primary-label-color: #0e7490;
    --compare-value-color: #0e7490;
    --output-field-bg: #f1f5f9;
    --output-field-border: #d6dde6;
    --output-field-color: #0e7490;
    --toast-bg: #1e293b;
    --tooltip-bg: #1e293b;
    --shadow-card: 0 1px 3px rgba(15,23,42,.08);
    --shadow-sm: 0 2px 10px rgba(15,23,42,.12);
}

* { box-sizing: border-box; }
html { scroll-padding-bottom: 72px; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--ui);
    margin: 0;
    padding: 22px 22px calc(var(--footer-h) + 26px);
    background: linear-gradient(160deg, var(--bg-gradient-start), var(--bg-gradient-end));
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

main {
    display: block;
    max-width: 1180px;
    margin: 0 auto;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 24px 70px rgba(0,0,0,.35);
}
.light-mode main { box-shadow: 0 16px 50px rgba(15,23,42,.10); }

/* ---------- top chrome ---------- */
.cnc-top {
    display: flex; align-items: center; justify-content: space-between; gap: 14px;
    padding: 15px 22px;
    border-bottom: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(34,211,238,.04), transparent);
}
.cnc-brand { display: flex; align-items: center; gap: 11px; min-width: 0; }
.cnc-mark {
    width: 28px; height: 28px; border-radius: 6px; flex: none;
    background: linear-gradient(150deg, var(--cyan), var(--cyan-deep));
    position: relative;
    box-shadow: 0 0 0 1px rgba(34,211,238,.25), 0 4px 14px rgba(34,211,238,.18);
}
.cnc-mark::after { content: ""; position: absolute; inset: 7px 11px; background: var(--bg); border-radius: 1px; }
.cnc-brand-name { font-weight: 700; letter-spacing: .14em; font-size: 14px; text-transform: uppercase; color: var(--text); line-height: 1.1; }
.cnc-brand-sub { color: var(--faint); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; margin-top: 2px; }
.cnc-top-right { display: flex; align-items: center; gap: 9px; flex-wrap: wrap; justify-content: flex-end; }
.cnc-toggle {
    width: 36px; height: 36px; border-radius: 8px; border: 1px solid var(--line);
    background: var(--panel-2); color: var(--muted); display: grid; place-items: center;
    font-size: 15px; cursor: pointer; transition: all var(--transition-fast);
}
.cnc-toggle:hover { color: var(--cyan); border-color: var(--cyan); }
.cnc-toggle:hover { color: var(--cyan); border-color: var(--cyan); }

/* segmented unit toggle (output + per-field share .field-unit-toggle) */
.field-unit-toggle {
    display: inline-flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden;
    background: var(--panel-2); flex: none;
}
.field-unit-toggle button {
    font: 600 11px var(--ui); letter-spacing: .05em; text-transform: uppercase;
    border: none; background: transparent; color: var(--muted);
    padding: 6px 11px; cursor: pointer; min-width: 34px; transition: all var(--transition-fast);
}
.field-unit-toggle button.active { background: var(--cyan); color: #04222b; }
.light-mode .field-unit-toggle button.active { color: #fff; }
.custom-unit-toggle { display: inline-flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: var(--panel-2); }
.custom-unit-toggle button {
    font: 600 11px var(--ui); border: none; background: transparent; color: var(--muted);
    padding: 6px 9px; cursor: pointer; text-transform: uppercase;
}
.custom-unit-toggle button.active { background: var(--cyan); color: #04222b; }
.light-mode .custom-unit-toggle button.active { color: #fff; }

/* risk pill (top bar) */
.cnc-risk-pill {
    display: inline-flex; align-items: center; gap: 7px;
    font: 700 11px var(--ui); letter-spacing: .08em; text-transform: uppercase;
    padding: 7px 12px; border-radius: 999px; white-space: nowrap;
}
.cnc-risk-pill .dot { width: 8px; height: 8px; border-radius: 50%; }
.cnc-risk-pill.safe { color: var(--safe); background: rgba(52,211,153,.14); }
.cnc-risk-pill.safe .dot { background: var(--safe); box-shadow: 0 0 8px var(--safe); }
.cnc-risk-pill.caution { color: var(--warn); background: rgba(251,191,36,.16); }
.cnc-risk-pill.caution .dot { background: var(--warn); box-shadow: 0 0 8px var(--warn); }
.cnc-risk-pill.danger { color: var(--danger); background: rgba(248,113,113,.16); }
.cnc-risk-pill.danger .dot { background: var(--danger); box-shadow: 0 0 8px var(--danger); }

/* ---------- body grid: rail + stage ---------- */
.container { display: grid; grid-template-columns: 332px 1fr; align-items: stretch; }
.section { min-width: 0; }
.gc-rail {
    border-right: 1px solid var(--line);
    padding: 16px;
    display: flex; flex-direction: column; gap: 10px;
    background: linear-gradient(180deg, rgba(28,35,51,.30), transparent 280px);
}
.gc-stage { padding: 16px 20px; display: flex; flex-direction: column; gap: 12px; min-width: 0; }

/* collapsible section headers (mobile) */
.section-header { display: flex; align-items: center; justify-content: space-between; cursor: default; }
.section-header h2, .gc-stage > h2 {
    font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--faint);
    margin: 0; font-weight: 600; display: flex; align-items: center; gap: 8px; white-space: nowrap;
}
.section-header { gap: 8px; }
.section-header::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.collapse-icon { display: none; color: var(--faint); font-size: 11px; transition: transform var(--transition-fast); }
.section-header.collapsed .collapse-icon { transform: rotate(-90deg); }
.section-content { display: flex; flex-direction: column; gap: 9px; overflow: hidden; transition: max-height var(--transition-normal) ease-out, opacity var(--transition-normal) ease-out; }
.section-content.collapsed { max-height: 0 !important; opacity: 0; }
@media (min-width: 901px) { .section-content { max-height: none !important; } }
.gc-row2-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 12px; align-items: start; }
.gc-row2-grid > .field-wrapper:has(.custom-input-wrapper.show) { grid-column: 1 / -1; }
.divider { height: 1px; background: var(--line); margin: 3px 0; border: none; }
.bit-diagram { display: none !important; }

/* fields */
.field-wrapper { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field-wrapper.hidden { display: none; }
label {
    display: flex; align-items: center; gap: 7px; flex-wrap: nowrap;
    font-size: 11px; font-weight: 600; letter-spacing: .07em; text-transform: uppercase; color: var(--muted);
    min-height: 22px;
}
label .field-unit-toggle { margin-left: auto; }
.tooltip {
    width: 15px; height: 15px; border-radius: 4px; background: var(--elev); color: var(--faint);
    display: inline-grid; place-items: center; font-size: 10px; font-weight: 700; cursor: help;
    position: relative; text-transform: none; letter-spacing: 0;
}
.tooltip::after {
    content: attr(data-tip);
    position: absolute; bottom: 130%; left: 50%; transform: translateX(-50%);
    background: var(--tooltip-bg); color: #e6edf3; padding: 7px 10px; border-radius: 6px;
    font: 400 11px var(--ui); letter-spacing: .01em; text-transform: none; white-space: normal; width: 200px;
    opacity: 0; visibility: hidden; transition: opacity var(--transition-fast); z-index: 50;
    border: 1px solid var(--line-2); box-shadow: var(--shadow-sm); pointer-events: none; line-height: 1.4;
}
.tooltip:hover::after { opacity: 1; visibility: visible; }
.input-group { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; width: 100%; }
select, input[type="text"], input[type="number"] {
    width: 100%; min-width: 0; padding: 8px 11px; border-radius: var(--radius-sm);
    border: 1px solid var(--border-input); background: var(--surface-input); color: var(--text);
    font: 500 14px var(--ui); transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.input-group > select { flex: 1 1 100%; min-width: 0; }
.input-group > input[type="number"] { flex: 1 1 100%; min-width: 0; }
select { flex: 1; min-width: 0; cursor: pointer; appearance: none;
    background-image: linear-gradient(45deg, transparent 50%, var(--faint) 50%), linear-gradient(135deg, var(--faint) 50%, transparent 50%);
    background-position: calc(100% - 16px) 17px, calc(100% - 11px) 17px; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat;
    padding-right: 30px;
}
select:focus, input[type="text"]:focus, input[type="number"]:focus {
    outline: none; border-color: var(--cyan); box-shadow: 0 0 0 2px var(--cyan-glow);
}
input[type="number"] { display: none; }
.custom-input-wrapper { display: none; align-items: center; gap: 6px; width: 100%; flex: 1 1 100%; min-width: 0; }
.custom-input-wrapper.show { display: flex; }
.custom-input-wrapper input[type="number"] { display: block; flex: 1 1 0; width: auto; min-width: 0; }
#pocketWidthGroup input[type="number"], #pocketHeightGroup input[type="number"] { display: block; }
.pocket-size-row input[type="number"] { flex: 1 1 0; min-width: 0; width: auto; }
.pocket-size-row { display: flex; align-items: center; gap: 8px; width: 100%; }
.pocket-size-sep { color: var(--faint); font-size: 1.1em; flex: none; }
.input-error { border-color: var(--danger) !important; box-shadow: 0 0 0 2px var(--color-danger-bg) !important; }

/* aggressiveness slider */
.status-push input[type="range"] {
    width: 100%; min-width: 0; -webkit-appearance: none; appearance: none; height: 6px; border-radius: 3px;
    background: linear-gradient(90deg, #16a34a, #eab308 52%, #ef4444); outline: none; cursor: pointer;
}
.status-push input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none; width: 16px; height: 16px; border-radius: 4px;
    background: #fff; border: 2px solid var(--cyan); box-shadow: 0 1px 4px rgba(0,0,0,.5); cursor: pointer;
}
.status-push input[type="range"]::-moz-range-thumb {
    width: 14px; height: 14px; border-radius: 4px; background: #fff; border: 2px solid var(--cyan); cursor: pointer;
}
.status-push input[type="range"]::-moz-range-track { background: transparent; }
.agg-track-wrap { position: relative; min-width: 0; width: 100%; display: flex; align-items: center; }
.agg-tick {
    position: absolute; top: 50%; left: 25%; width: 2px; height: 14px; border-radius: 1px;
    background: var(--text); opacity: .5; transform: translate(-50%, -50%); pointer-events: none;
}
.aggressiveness-value {
    font: 700 13px var(--mono); color: var(--cyan-bright); background: var(--panel-2);
    border: 1px solid var(--line); border-radius: 6px; padding: 3px 8px; flex: none;
}

/* ---------- hero gauge ---------- */
.gc-gauge-wrap {
    display: block;
    background: radial-gradient(120% 140% at 28% 0%, rgba(34,211,238,.07), transparent 60%), var(--panel);
    border: 1px solid var(--line); border-radius: var(--radius-xl); padding: 20px 24px; position: relative;
}
.gc-gauge-meta { display: flex; flex-direction: column; gap: 10px; position: relative; min-width: 0; }
.gc-hero-label { font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--cyan-bright); font-weight: 600; display: flex; align-items: center; gap: 7px; }
.gc-hero-line { display: flex; align-items: baseline; gap: 8px; }
.gc-hero-num {
    font: 700 58px/0.95 var(--mono) !important; color: var(--text) !important; letter-spacing: -.02em;
    background: transparent !important; border: none !important; box-shadow: none !important; padding: 0 !important;
    width: 100% !important; text-align: left !important; cursor: text;
}
.gc-hero-num:focus { outline: none; border-bottom: 2px solid var(--cyan) !important; }
.gc-hero-sub { font-size: 12.5px; color: var(--muted); line-height: 1.5; margin: 0; max-width: 340px; }
.gc-hero-sub b { color: var(--text-secondary); font-weight: 600; }
.machine-hint { display: none; font-size: 11px; color: var(--cyan);
    margin-top: 5px; align-items: center; gap: 6px; letter-spacing: .02em; }
.field-wrapper.needs-machine .machine-hint { display: flex; }
.machine-hint-x { background: none; border: none; color: var(--cyan);
    font-size: 14px; line-height: 1; cursor: pointer; padding: 0 2px; opacity: .8; }
.field-wrapper.needs-machine select {
    box-shadow: 0 0 0 2px var(--cyan); border-radius: var(--radius-md);
    animation: machinePulse 2.2s ease-in-out infinite; }
@keyframes machinePulse {
    0%, 100% { box-shadow: 0 0 0 1px var(--cyan); }
    50%      { box-shadow: 0 0 0 4px rgba(34, 211, 238, .35); } }
.gc-hero-actions { display: flex; align-items: center; gap: 8px; margin-top: 2px; }
.gc-copy {
    display: inline-flex; align-items: center; gap: 8px; font-size: 12px !important;
    border: 1px solid var(--cyan); color: var(--cyan); background: transparent;
    font: 700 11px var(--ui); letter-spacing: .06em; text-transform: uppercase;
    padding: 9px 15px; border-radius: var(--radius-sm); cursor: pointer; white-space: nowrap;
    transition: all var(--transition-fast);
}
.gc-copy:hover { background: var(--cyan); color: #04222b; }
.light-mode .gc-copy:hover { color: #fff; }
.gc-copy.copied { border-color: var(--safe); color: var(--safe); }
.gc-hero-reset { position: static; opacity: 0; transform: none; }
.output-item.overridden .gc-hero-reset { opacity: 1; }
.gc-gauge-meta.overridden .gc-hero-num { color: var(--warn) !important; }

/* machining time banner */
.mach-time-callout {
    display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
    background: var(--primary-gradient); border: 1px solid rgba(34,211,238,.22);
    border-radius: var(--radius-lg); padding: 13px 18px;
}
.mach-time-callout.hidden { display: none; }
.mach-time-inner { display: flex; align-items: baseline; gap: 10px; }
.mach-time-label { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--cyan-bright); font-weight: 600; }
.mach-time-value { font: 700 26px var(--mono); color: var(--text); }
.mach-time-formula { font-size: 11px; color: var(--faint); margin-left: auto; }

/* risk meter (detailed) */
.risk-meter-container { background: var(--surface-secondary); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 14px 16px; }
.risk-meter-label { display: flex; align-items: center; justify-content: space-between; margin-bottom: 9px; }
.risk-meter-title { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.risk-meter-value { font: 700 12px var(--ui); letter-spacing: .08em; text-transform: uppercase; padding: 4px 10px; border-radius: 999px; }
.risk-meter-value.safe { color: var(--safe); background: rgba(52,211,153,.14); }
.risk-meter-value.caution { color: var(--warn); background: rgba(251,191,36,.16); }
.risk-meter-value.danger { color: var(--danger); background: rgba(248,113,113,.16); }
.risk-meter-bar { height: 7px; border-radius: 4px; background: var(--elev); overflow: hidden; }
.risk-meter-fill { height: 100%; border-radius: 4px; transition: width var(--transition-normal); }
.risk-meter-fill.safe { background: linear-gradient(90deg, #16a34a, var(--safe)); }
.risk-meter-fill.caution { background: linear-gradient(90deg, #d97706, var(--warn)); }
.risk-meter-fill.danger { background: linear-gradient(90deg, #dc2626, var(--danger)); }
.risk-meter-ticks { display: flex; justify-content: space-between; margin-top: 6px; font-size: 11px; color: var(--faint); letter-spacing: .06em; text-transform: uppercase; }
.risk-meter-message { margin-top: 10px; font-size: 12.5px; line-height: 1.45; color: var(--text-secondary); }
.risk-meter-message.caution { color: var(--warn); }
.risk-meter-message.danger { color: var(--danger); }
.warnings-container { display: none; margin-top: 10px; flex-direction: column; gap: 7px; }
.warnings-container.show { display: flex; }
.warning-item {
    font-size: 12px; line-height: 1.4; color: var(--text-secondary);
    background: var(--color-danger-bg); border-left: 3px solid var(--danger);
    border-radius: 5px; padding: 8px 11px;
}

/* group headings inside stage */
.output-group-heading {
    font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--faint);
    margin: 6px 0 -4px; display: flex; align-items: center; gap: 8px; font-weight: 600;
}
.output-group-heading::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.gc-sub-head { font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--faint); margin: 0 0 2px; text-align: left; font-weight: 600; }

/* ---------- readout cells ---------- */
.gc-readouts { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.output-item {
    position: relative; background: var(--panel); border: 1px solid var(--line);
    border-radius: var(--radius-md); padding: 8px 10px; overflow: hidden;
    display: flex; flex-direction: column; gap: 3px;
}
.output-item::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--cyan); opacity: .45; }
.output-item.hidden { display: none; }
.output-item.overridden { border-color: var(--warn); }
.output-item.overridden::before { background: var(--warn); opacity: .9; }
.output-label { font-size: 11px; letter-spacing: .09em; text-transform: uppercase; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.edit-icon { font-size: 11px; color: var(--cyan); opacity: .75; cursor: pointer; }
.output-item:hover .edit-icon, .vc-row:hover .edit-icon { opacity: 1; }
.output-field-input {
    width: 100%; border: 1px solid transparent; background: transparent;
    font: 700 16px var(--mono); color: var(--cyan-bright); padding: 1px 2px; border-radius: 5px;
    -moz-appearance: textfield;
}
.output-field-input:focus { outline: none; border-color: var(--cyan); background: var(--surface-input); }
.output-field-input[readonly] { cursor: default; }
.gc-cell-bar { height: 3px; border-radius: 2px; background: var(--elev); overflow: hidden; margin-top: 1px; }
.gc-cell-bar i { display: block; height: 100%; width: 0; background: var(--cyan); border-radius: 2px; transition: width var(--transition-normal); }
.reset-field-btn {
    position: absolute; right: 32px; top: 11px; background: transparent; border: none; color: var(--warn);
    cursor: pointer; font-size: 13px; opacity: 0; transition: opacity var(--transition-fast); line-height: 1; padding: 2px;
}
.output-item.overridden .reset-field-btn { opacity: 1; }
.copy-btn {
    position: absolute; right: 9px; top: 10px; background: transparent; border: none; color: var(--faint);
    cursor: pointer; font-size: 13px;
    opacity: .55; transition: all var(--transition-fast); padding: 2px 3px; line-height: 1;
}
.output-item:hover .copy-btn, .gc-gauge-meta:hover .copy-btn { opacity: .9; }
.copy-btn:hover { color: var(--cyan); }
.copy-btn.copied { color: var(--safe); opacity: 1; }
.apply-rpm-btn {
    margin-top: 4px; width: 100%; padding: 6px; background: transparent; border: 1px solid var(--cyan);
    color: var(--cyan); border-radius: 6px; cursor: pointer; font: 700 11px var(--ui);
    text-transform: uppercase; letter-spacing: .05em; transition: all var(--transition-fast);
}
.apply-rpm-btn:hover { background: var(--cyan); color: #04222b; }
.light-mode .apply-rpm-btn:hover { color: #fff; }
/* formula tooltip on hover */
.formula-tooltip {
    position: absolute; bottom: calc(100% + 6px); left: 12px;
    background: var(--tooltip-bg); color: #e6edf3; padding: 7px 10px; border-radius: 6px;
    font: 400 10.5px var(--mono); white-space: nowrap; opacity: 0; visibility: hidden;
    transition: opacity var(--transition-fast); z-index: 40; border: 1px solid var(--line-2);
    box-shadow: var(--shadow-sm); pointer-events: none;
}
.output-item:hover .formula-tooltip, .gc-gauge-meta:hover .formula-tooltip { opacity: 1; visibility: visible; }

/* compare */
.compare-toggle { display: flex; align-items: center; gap: 9px; padding: 11px 14px; background: var(--surface-secondary); border: 1px solid var(--line); border-radius: var(--radius-md); }
.compare-toggle input[type="checkbox"] { width: 17px; height: 17px; accent-color: var(--cyan); cursor: pointer; }
.compare-toggle label { font-size: 13px; text-transform: none; letter-spacing: 0; color: var(--text-secondary); cursor: pointer; font-weight: 500; }
.compare-grid { display: none; grid-template-columns: 1fr 1fr; gap: 12px; }
.compare-grid.show { display: grid; }
.compare-column { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius-md); padding: 14px; }
.compare-column.roughing { border-top: 2px solid var(--warn); }
.compare-column.finishing { border-top: 2px solid var(--safe); }
.compare-column h3 { margin: 0 0 11px; font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.compare-row { display: flex; align-items: baseline; justify-content: space-between; padding: 5px 0; border-bottom: 1px dashed var(--line); }
.compare-row:last-child { border-bottom: none; }
.compare-label { font-size: 12px; color: var(--muted); }
.compare-value { font: 600 13px var(--mono); color: var(--compare-value-color); }

/* summary + tips + support */
.summary-card {
    background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius-md);
    padding: 15px 16px; font: 400 12px/1.6 var(--mono); color: var(--text-secondary);
    white-space: pre-wrap; word-break: break-word;
}
.tips-section { background: var(--surface-secondary); border: 1px solid var(--line); border-left: 2px solid var(--tip-good); border-radius: var(--radius-md); padding: 13px 14px 13px 12px; }
.tips-list { margin: 0; padding-left: 18px; font-size: 13px; color: var(--text-secondary); line-height: 1.55; display: flex; flex-direction: column; gap: 7px; }
.tips-list li::marker { color: var(--faint); }
.tips-list .tip-good { color: var(--tip-good); }
.tips-list .tip-warning { color: var(--tip-warning); }
.support-callout { text-align: center; padding: 18px 16px; margin: 18px auto 0; max-width: 560px; border: 1px dashed var(--line); border-radius: var(--radius-md); background: transparent; }
.support-text { color: var(--text-secondary); font-size: 13px; margin: 0 0 12px; line-height: 1.5; }
.support-note { color: var(--faint); font-size: 11px; margin: 10px 0 0; }

/* buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 7px;
    font: 700 11px var(--ui); letter-spacing: .06em; text-transform: uppercase; cursor: pointer;
    border: 1px solid var(--cyan); color: var(--cyan); background: transparent;
    padding: 9px 16px; border-radius: var(--radius-sm); transition: all var(--transition-fast);
}
.btn:hover { background: var(--cyan); color: #04222b; }
.light-mode .btn:hover { color: #fff; }
.btn-secondary { border-color: var(--line-2); color: var(--text-secondary); }
.btn-secondary:hover { border-color: var(--cyan); color: var(--cyan); background: transparent; }
.btn-small { padding: 7px 13px; }
.support-btn { background: var(--cyan); color: #04222b; border-color: var(--cyan); font-size: 12px; padding: 10px 22px; text-decoration: none; }
.light-mode .support-btn { color: #fff; }
.support-btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #04222b; }
.light-mode .support-btn:hover { color: #fff; }

/* skip link */
.skip-link {
    position: absolute; top: -48px; left: 8px; background: var(--cyan); color: #04222b;
    padding: 8px 16px; border-radius: 0 0 var(--radius-sm) var(--radius-sm); font-weight: 700; text-decoration: none;
    z-index: 300; transition: top var(--transition-fast);
}
.skip-link:focus { top: 0; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
:focus:not(:focus-visible) { outline: none; }

/* toast */
.toast {
    position: fixed; bottom: calc(var(--footer-h) + 70px + env(safe-area-inset-bottom)); left: 50%; transform: translateX(-50%);
    background: var(--toast-bg); color: #fff; padding: 12px 22px; border-radius: var(--radius-sm);
    border: 1px solid var(--line-2); font-size: 13px; opacity: 0; pointer-events: none;
    transition: opacity var(--transition-normal); z-index: 1000; box-shadow: var(--shadow-sm);
}
.toast.show { opacity: 1; }

/* mobile sticky header + view-results button (hidden on desktop) */
.sticky-result {
    display: none; position: fixed; top: 0; left: 0; right: 0; z-index: 200;
    background: var(--panel); color: var(--text); padding: 9px 18px;
    border-bottom: 1px solid var(--cyan); box-shadow: 0 2px 12px rgba(0,0,0,.4);
    justify-content: space-between; align-items: center; gap: 8px;
    transform: translateY(-100%); transition: transform var(--transition-normal);
}
.sticky-result.visible { transform: translateY(0); }
.sticky-col { flex: 1; text-align: center; }
.sticky-label { display: block; font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--faint); }
.sticky-value { font: 700 15px var(--mono); color: var(--cyan-bright); }

/* footer (fixed) */
.site-footer {
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 90; text-align: center;
    padding: 10px 20px calc(10px + env(safe-area-inset-bottom));
    font-size: 13px; color: var(--text-muted);
    background: var(--surface-primary); border-top: 1px solid var(--border-primary);
}
.site-footer p { margin: 0; }
.site-footer a { color: var(--footer-link); text-decoration: none; font-weight: 600; }
.site-footer a:hover { text-decoration: underline; }

/* ---------- responsive ---------- */
/* ---------- one global unit switch ---------- */
.unit-switch { display: inline-flex; border: 1px solid var(--line); border-radius: 7px; overflow: hidden; background: var(--panel-2); }
.unit-switch button {
    padding: 8px 14px; border: none; background: transparent; cursor: pointer;
    font: 600 11px var(--ui); letter-spacing: .06em; color: var(--muted);
    transition: background var(--transition-fast), color var(--transition-fast);
}
.unit-switch button.active { background: var(--cyan); color: #04222b; }
.light-mode .unit-switch button.active { color: #fff; }

/* ---------- status strip: bit load | push it | spindle ---------- */
.status-strip {
    display: grid; grid-template-columns: 1.1fr 0.9fr 1.2fr;
    background: var(--surface-secondary); border: 1px solid var(--line); border-radius: var(--radius-lg);
}
.status-cell { padding: 11px 14px; min-width: 0; display: flex; flex-direction: column; gap: 7px; border-left: 1px solid var(--line); }
.status-cell:first-child { border-left: none; }
.status-cell .risk-meter-label { margin-bottom: 0; }
.status-push .agg-track-wrap { margin-top: 4px; }
.status-push label { min-height: 0; }

/* ---------- spindle cell ---------- */
.spindle-band { border-radius: 0 var(--radius-lg) var(--radius-lg) 0; box-shadow: inset 3px 0 0 var(--line-2); }
.spindle-band.hot, .spindle-band.starved { box-shadow: inset 3px 0 0 var(--warn); }
.spindle-band.slow { box-shadow: inset 3px 0 0 var(--cyan); }
.spindle-band.ok { box-shadow: inset 3px 0 0 var(--safe); }
.spindle-rule { width: 1px; align-self: stretch; background: var(--line); }
.spindle-set label { min-height: 0; margin-bottom: 6px; }
.spindle-headline { font: 600 12.5px var(--ui); color: var(--text-secondary); line-height: 1.4; }
.spindle-band.hot .spindle-headline, .spindle-band.starved .spindle-headline { color: var(--warn); }
.spindle-band.ok .spindle-headline { color: var(--safe); }
.spindle-detail { margin: 0; font-size: 12px; line-height: 1.45; color: var(--muted); }
.spindle-sfm { white-space: nowrap; }
.spindle-sfm-val { font: 700 13px var(--mono); color: var(--cyan-bright); }
.spindle-sfm-lim { font-size: 11px; color: var(--faint); }
.spindle-apply { width: auto !important; margin-top: auto !important; padding: 8px 12px !important; white-space: nowrap; align-self: flex-start; }

/* ---------- tool card ---------- */
.vc-card {
    background: radial-gradient(120% 140% at 28% 0%, rgba(34,211,238,.07), transparent 60%), var(--panel);
    border: 1px solid var(--line); border-radius: var(--radius-xl); padding: 14px 16px 10px;
    display: flex; flex-direction: column; gap: 0;
}
.vc-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 2px; }
.vc-title { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.vc-kicker { font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--cyan-bright); font-weight: 600; }
.vc-name { font: 600 14px var(--ui); color: var(--text); line-height: 1.3; }
.vc-group {
    font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--faint); font-weight: 600;
    margin: 8px 0 0; display: flex; align-items: center; gap: 8px;
}
.vc-group::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.vc-row {
    display: grid; grid-template-columns: 150px 230px minmax(0, 1fr) auto; align-items: center; gap: 12px;
    padding: 3px 0; border-bottom: 1px dashed var(--line); position: static; background: none; border-radius: 0; overflow: visible;
}
.vc-row:last-of-type, .vc-row.output-item:last-of-type { border-bottom: none; }
.vc-row.hidden { display: none; }
.vc-row.output-item { border: none; border-bottom: 1px dashed var(--line); padding: 3px 0; background: none; box-shadow: none; }
.vc-row.output-item.overridden { border-color: var(--line); }
.vc-row.output-item::before { display: none; }
.vc-row.overridden .vc-input { color: var(--warn); }
.vc-label { font-size: 13px; color: var(--text-secondary); display: flex; align-items: center; gap: 6px; }
.vc-value, .vc-input { font: 700 16px var(--mono); color: var(--cyan-bright); white-space: nowrap; }
.vc-input { width: 100%; border: 1px solid transparent; background: var(--output-field-bg); padding: 4px 9px; border-radius: 6px; }
.vc-input:focus { outline: none; border-color: var(--cyan); }
.vc-feed { font-size: 18px; }
.vc-hint { font-size: 12px; color: var(--muted); }
.vc-field { display: flex; align-items: center; gap: 8px; min-width: 0; }
.vc-field .output-field-input { flex: 1 1 auto; min-width: 0; }
.vc-row .vc-field { display: grid; grid-template-columns: 150px 1fr; gap: 8px; }
.vc-row .vc-field .vc-input { width: 150px; }
.vc-unit { font-size: 12px; color: var(--muted); white-space: nowrap; flex: none; }
.gc-readouts .vc-field { flex-direction: column; align-items: stretch; gap: 1px; }
.gc-readouts .vc-unit { font-size: 11px; color: var(--faint); white-space: normal; }
.vc-reset { position: static; }
.vc-row .reset-field-btn { visibility: hidden; opacity: 1; }
.vc-row.overridden .reset-field-btn { visibility: visible; }
.vc-foot { margin-top: 8px; padding: 6px 10px; background: var(--bg); border: 1px solid var(--line); border-radius: 8px;
    font: 400 11.5px/1.5 var(--mono); color: var(--text-secondary); }

/* ---------- feed provenance, always visible (was hover-only) ---------- */
.formula-strip {
    padding: 8px 11px; background: var(--bg); border: 1px solid var(--line); border-radius: 8px;
    font: 400 11.5px/1.5 var(--mono); color: var(--text-secondary);
}
.gc-hero-editable { font-size: 11px; color: var(--faint); white-space: nowrap; }
.gc-copy-primary { background: var(--cyan) !important; color: #04222b !important; }
.light-mode .gc-copy-primary { color: #fff !important; }

/* ---------- aggressiveness, promoted out of the rail ---------- */
.agg-note { font-size: 11.5px; color: var(--faint); }

.output-item.over-power { border-color: var(--danger); }
.output-item.over-power::before { background: var(--danger); opacity: .9; }

@media (max-width: 900px) {
    body { padding: 14px 14px calc(var(--footer-h) + 22px); }
    .container { grid-template-columns: 1fr; }
    .gc-stage { order: 1; }
    .status-strip { grid-template-columns: 1fr; }
    .status-cell { border-left: none; border-top: 1px solid var(--line); }
    .status-cell:first-child { border-top: none; }
    .spindle-band { border-radius: 0 0 var(--radius-lg) var(--radius-lg); }
    .gc-rail { order: 2; border-right: none; border-top: 1px solid var(--line); }
    .gc-readouts { grid-template-columns: repeat(3, 1fr); }
    .collapse-icon { display: block; }
    .section-header { cursor: pointer; min-height: var(--touch-min); }
    select, input[type="text"], input[type="number"] { font-size: 16px; min-height: var(--touch-min); }
    .field-unit-toggle button { min-height: 38px; }
    label { min-height: 42px; }
    .sticky-result { display: flex; }
    .gc-hero-sub { max-width: none; }
}
@media (max-width: 560px) {
    body { padding: 10px 9px calc(var(--footer-h) + 20px); }
    .cnc-top { flex-wrap: wrap; gap: 10px; }
    .vc-row { grid-template-columns: 1fr 1fr auto; row-gap: 0; }
    .vc-row .vc-field { grid-template-columns: 1fr auto; }
    .vc-row .vc-field .vc-input { width: 100%; }
    .vc-hint { grid-column: 1 / -1; }
    .vc-head { flex-direction: column; }
    .vc-card { padding: 14px 14px 12px; }
    .vc-value { font-size: 17px; }
    .mach-time-callout { gap: 8px 14px; }
    .gc-readouts { grid-template-columns: repeat(2, 1fr); gap: 9px; }
    .gc-stage, .gc-rail { padding: 16px; }
    .mach-time-formula { display: none; }
}
@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; }
    .field-wrapper.needs-machine select { animation: none !important; }
}
@media print {
    body { padding: 0; background: #fff; color: #000; }
    .site-footer { position: static; }
    .sticky-result, .toast, .skip-link, .cnc-toggle, .copy-btn, .reset-field-btn, .apply-rpm-btn, .gc-copy { display: none !important; }
    main { box-shadow: none; border: none; max-width: none; }
    .container { grid-template-columns: 1fr; }
}