/* Tokens follow the NatchGSM theme with this site's own accent (teal) in place of lime.
   Dark is the default, light applies through data-theme, which theme.js sets before first paint. */
@font-face { font-family: "Inter"; font-style: normal; font-weight: 400 700; font-display: swap; src: url("fonts/inter-latin-ext.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 400 700; font-display: swap; src: url("fonts/inter-latin.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Cascadia Mono"; font-style: normal; font-weight: 400; font-display: swap; src: url("fonts/cascadia-mono-latin-400.woff2") format("woff2"); }
@font-face { font-family: "Cascadia Mono"; font-style: normal; font-weight: 500; font-display: swap; src: url("fonts/cascadia-mono-latin-500.woff2") format("woff2"); }

:root {
  color-scheme: dark;
  --background: #1e1e1e;
  --surface: #252526;
  --pane: #1a1a1b;
  --input: #1a1a1b;
  --primary: #2d2d30;
  --secondary: #3e3e42;
  --secondary-border: #4a4a52;
  --border: #3f3f46;
  --card-border: #2f2f33;
  --hairline: #2a2a2e;
  --title-text: #ffffff;
  --text: #e0e0e0;
  --text-muted: #c8c8cc;
  --text-secondary: #9e9e9e;
  --text-tertiary: #7c7c82;
  --text-faint: #5e5e64;
  --accent: #e8e8ea;
  --accent-hover: #ffffff;
  --on-accent: #141415;
  --accent-tint8: rgba(232, 232, 234, 0.078);
  --accent-tint18: rgba(232, 232, 234, 0.18);
  --accent-tint22: rgba(232, 232, 234, 0.22);
  --brand: #5dd3c2;
  --brand-hover: #7eddcf;
  --on-brand: #08201c;
  --success: #5dd3c2;
  --success-text: #7eddcf;
  --success-tint16: rgba(93, 211, 194, 0.16);
  --warning: #ffb300;
  --warning-text: #ffcb5c;
  --warning-tint10: rgba(255, 179, 0, 0.1);
  --danger: #f44336;
  --danger-text: #f66a5f;
  --danger-tint10: rgba(244, 67, 54, 0.102);
  --chart-bar: #7c7c7f;

  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "Cascadia Mono", Consolas, Menlo, "DejaVu Sans Mono", monospace;
}

:root[data-theme="light"] {
  color-scheme: light;
  --background: #f5f5f6;
  --surface: #ffffff;
  --pane: #f0f0f2;
  --input: #ffffff;
  --primary: #ececee;
  --secondary: #e4e4e7;
  --secondary-border: #cfcfd4;
  --border: #d4d4d8;
  --card-border: #dedee2;
  --hairline: #e2e2e6;
  --title-text: #111112;
  --text: #1e1e1e;
  --text-muted: #3a3a3e;
  --text-secondary: #5f5f66;
  --text-tertiary: #85858c;
  --text-faint: #a2a2a8;
  --accent: #1e1e1e;
  --accent-hover: #000000;
  --on-accent: #ffffff;
  --accent-tint8: rgba(30, 30, 30, 0.039);
  --accent-tint18: rgba(30, 30, 30, 0.09);
  --accent-tint22: rgba(30, 30, 30, 0.122);
  --brand: #0e9c8a;
  --brand-hover: #0b8576;
  --on-brand: #ffffff;
  --success: #0e9c8a;
  --success-text: #0a6f62;
  --success-tint16: rgba(14, 156, 138, 0.14);
  --warning: #c98a00;
  --warning-text: #8a5e00;
  --warning-tint10: rgba(201, 138, 0, 0.1);
  --danger: #d32f2f;
  --danger-text: #b3261e;
  --danger-tint10: rgba(211, 47, 47, 0.078);
  --chart-bar: #969698;
}

* { box-sizing: border-box; }
html, body { background: var(--background); color: var(--text); }
body { margin: 0; font-family: var(--font-sans); font-size: 14px; line-height: 1.45; -webkit-font-smoothing: antialiased; }
a { color: var(--accent-hover); text-decoration: underline; text-decoration-color: var(--border); text-underline-offset: 2px; }
a:hover { text-decoration-color: currentColor; }
::selection { background: var(--accent-tint22); color: var(--title-text); }
.mono { font-family: var(--font-mono); }
.quiet { color: var(--text-secondary); }
.hint { color: var(--text-tertiary); font-size: 12px; }
.icon { width: 16px; height: 16px; fill: currentColor; flex: none; vertical-align: middle; }
[hidden] { display: none !important; }

/* ===== Page frame ===== */
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 28px; }
.top { border-bottom: 1px solid var(--hairline); background: var(--pane); }
.top .wrap { display: flex; align-items: center; gap: 12px; height: 60px; }
.logo { width: 34px; height: 34px; border-radius: 9px; background: var(--brand); color: var(--on-brand); display: flex; align-items: center; justify-content: center; font: 700 16px/1 var(--font-sans); letter-spacing: -0.04em; flex: none; }
.brand-name { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name strong { font-size: 15px; font-weight: 600; color: var(--title-text); }
.brand-name span { font-size: 11.5px; color: var(--text-secondary); }
.top .spacer { flex: 1; }

.band { padding: 28px 0 36px; }
.band--surface { background: var(--pane); border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
.band__head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; }
h1, h2 { margin: 0; color: var(--title-text); font-weight: 600; letter-spacing: -0.02em; }
h1 { font-size: 26px; }
h2 { font-size: 22px; }
h3 { margin: 0 0 12px; font-size: 15px; font-weight: 600; color: var(--title-text); }
.lede { margin: 6px 0 0; color: var(--text-secondary); max-width: 640px; }

.grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; align-items: start; }
.stack { display: flex; flex-direction: column; gap: 16px; min-width: 0; }
.sticky { position: sticky; top: 16px; }

/* ===== Cards ===== */
.card { background: var(--surface); border: 1px solid var(--card-border); border-radius: 8px; padding: 16px 18px; min-width: 0; }
.card__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.card__head h3 { margin: 0; }
.label { font-size: 10.5px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-secondary); }
.hr { height: 1px; background: var(--hairline); border: 0; margin: 16px 0; }

/* ===== Form controls ===== */
.fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 16px; }
.fields--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field > label, .field__label { font-size: 12.5px; font-weight: 500; color: var(--text); }
.field__note { font-size: 11.5px; color: var(--text-tertiary); }
.input { height: 34px; width: 100%; padding: 0 10px; border-radius: 6px; border: 1px solid var(--border); background: var(--input); color: var(--text); font: 400 14px var(--font-sans); outline: none; min-width: 0; }
.input:hover { border-color: var(--secondary-border); }
.input:focus { border-color: var(--accent); color: var(--title-text); }
.input::placeholder { color: var(--text-faint); }
.input.is-bad { border-color: var(--danger); }
.unit { position: relative; display: flex; align-items: center; }
.unit .input { padding-right: 52px; font-family: var(--font-mono); font-size: 13.5px; }
.unit .input.unit--pre { padding-left: 24px; padding-right: 10px; }
.unit__suffix { position: absolute; right: 10px; color: var(--text-tertiary); font-size: 12px; pointer-events: none; }
.unit__prefix { position: absolute; left: 10px; color: var(--text-tertiary); font: 13px var(--font-mono); pointer-events: none; }
.select { position: relative; display: flex; align-items: center; }
.select select { appearance: none; -webkit-appearance: none; cursor: pointer; padding-right: 30px; }
.select select option { background: var(--surface); color: var(--text); }
.select .icon { position: absolute; right: 8px; color: var(--text-secondary); pointer-events: none; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; height: 32px; padding: 0 12px; border-radius: 6px; border: 1px solid var(--secondary-border); background: var(--secondary); color: var(--text); font: 500 13px/1 var(--font-sans); white-space: nowrap; cursor: pointer; text-decoration: none; }
.btn:hover { background: var(--border); }
.btn:active { background: var(--primary); }
.btn--main { background: var(--accent); color: var(--on-accent); border: 0; font-weight: 600; }
.btn--main:hover { background: var(--accent-hover); }
.btn--ghost { background: transparent; border-color: transparent; color: var(--text-secondary); padding: 0 8px; }
.btn--ghost:hover { background: var(--accent-tint8); color: var(--text); }
.btn--sm { height: 28px; padding: 0 10px; font-size: 12.5px; }
.btn--icon { width: 32px; padding: 0; }
.btn--danger-text:hover { color: var(--danger-text); }

/* Pills, for preset rows only */
.pills { display: flex; flex-wrap: wrap; gap: 4px; }
.pill { height: 28px; padding: 0 12px; border-radius: 999px; border: 0; background: transparent; color: var(--text-secondary); font: 500 12.5px/1 var(--font-sans); cursor: pointer; white-space: nowrap; }
.pill:hover { background: var(--accent-tint8); color: var(--text); }
.pill.is-on, .pill.is-on:hover { background: var(--accent-tint22); color: var(--accent-hover); }

.seg { display: inline-flex; padding: 2px; border-radius: 7px; border: 1px solid var(--card-border); background: var(--background); }
.seg button { height: 26px; padding: 0 10px; border-radius: 5px; border: 0; background: transparent; color: var(--text-secondary); font: 500 12px var(--font-sans); cursor: pointer; }
.seg button:hover { background: var(--accent-tint8); color: var(--text); }
.seg button.is-on { background: var(--accent-tint22); color: var(--title-text); }

.toggle-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.toggle { position: relative; width: 34px; height: 18px; border-radius: 9px; border: 0; padding: 0; background: var(--secondary); cursor: pointer; flex: none; }
.toggle::after { content: ""; position: absolute; top: 3px; left: 3px; width: 12px; height: 12px; border-radius: 50%; background: var(--accent-hover); }
.toggle[aria-checked="true"] { background: var(--accent); }
.toggle[aria-checked="true"]::after { left: 19px; background: var(--on-accent); }

/* Ratio slider */
.ratio { display: grid; grid-template-columns: 96px minmax(0, 1fr) 96px; gap: 12px; align-items: center; }
.ratio .unit .input { padding-right: 36px; }
input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: 18px; background: transparent; cursor: pointer; margin: 0; }
input[type="range"]::-webkit-slider-runnable-track { height: 4px; border-radius: 2px; background: linear-gradient(to right, var(--chart-bar) var(--fill, 30%), var(--accent) var(--fill, 30%)); }
input[type="range"]::-moz-range-track { height: 4px; border-radius: 2px; background: linear-gradient(to right, var(--chart-bar) var(--fill, 30%), var(--accent) var(--fill, 30%)); }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 16px; height: 16px; margin-top: -6px; border-radius: 50%; background: var(--accent-hover); border: 2px solid var(--surface); }
input[type="range"]::-moz-range-thumb { width: 14px; height: 14px; border-radius: 50%; background: var(--accent-hover); border: 2px solid var(--surface); }
input[type="range"]:focus-visible { outline: 1px solid var(--accent); outline-offset: 4px; border-radius: 4px; }
.ratio__ends { display: flex; justify-content: space-between; margin-top: 4px; font-size: 11.5px; color: var(--text-tertiary); grid-column: 2; }

/* Flavour rows */
.flavours { display: flex; flex-direction: column; gap: 8px; }
.flavour { display: grid; grid-template-columns: minmax(0, 1.6fr) 104px minmax(0, 1.3fr) 32px; gap: 8px; align-items: start; }
.flavour__custom { grid-column: 3; }
.flavours__head { display: grid; grid-template-columns: minmax(0, 1.6fr) 104px minmax(0, 1.3fr) 32px; gap: 8px; }
.flavours__foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 12px; }

/* ===== Results ===== */
.table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.table th { text-align: right; font-size: 10.5px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-secondary); padding: 0 0 8px; border-bottom: 1px solid var(--hairline); }
.table th:first-child, .table td:first-child { text-align: left; }
.table td { padding: 9px 0; border-bottom: 1px solid var(--hairline); text-align: right; font-family: var(--font-mono); font-size: 13px; color: var(--text); white-space: nowrap; }
.table td:first-child { font-family: var(--font-sans); font-size: 13.5px; white-space: normal; padding-right: 12px; }
.table td + td, .table th + th { padding-left: 14px; }
.table tfoot td { border-bottom: 0; font-weight: 500; color: var(--title-text); }
.table .sub { display: block; font-size: 11.5px; color: var(--text-tertiary); }
.table .strong { color: var(--title-text); font-weight: 500; }
.table--inputs td { padding: 6px 0; }
.table--inputs td .input { height: 30px; font-size: 13px; }
.table--inputs .unit .input { padding-right: 28px; }
.table--inputs .unit .input.unit--pre { padding-left: 22px; padding-right: 6px; }

.bar { display: flex; height: 8px; border-radius: 4px; overflow: hidden; background: var(--primary); margin: 4px 0 8px; }
.bar__vg { background: var(--accent); }
.bar__pg { background: var(--chart-bar); }
.bar__other { background: var(--text-faint); }
.legend { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 12px; color: var(--text-secondary); }
.legend i { display: inline-block; width: 8px; height: 8px; border-radius: 2px; margin-right: 6px; vertical-align: 0; }

.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat__value { font: 500 20px/1.2 var(--font-mono); color: var(--title-text); letter-spacing: -0.02em; }
.stat__value small { font-size: 12px; color: var(--text-secondary); letter-spacing: 0; margin-left: 2px; }

.note { display: flex; gap: 10px; align-items: flex-start; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--card-border); background: var(--background); font-size: 13px; color: var(--text-muted); }
.note .icon { margin-top: 1px; color: var(--text-secondary); }
.note b { color: var(--title-text); font-weight: 600; }
.note--warn { border-color: transparent; background: var(--warning-tint10); color: var(--text); }
.note--warn .icon { color: var(--warning); }
.note--bad { border-color: transparent; background: var(--danger-tint10); color: var(--text); }
.note--bad .icon { color: var(--danger); }
.notes { display: flex; flex-direction: column; gap: 8px; margin-top: 14px; }
.notes:empty { display: none; }

.actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.saved { display: flex; flex-direction: column; gap: 2px; margin-top: 12px; }
.saved__row { display: flex; align-items: center; gap: 8px; padding: 4px 4px 4px 10px; border-radius: 6px; }
.saved__row:hover { background: var(--accent-tint8); }
.saved__name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; background: none; border: 0; padding: 4px 0; text-align: left; color: var(--text); font: 500 13px var(--font-sans); cursor: pointer; }
.saved__name small { color: var(--text-tertiary); font-weight: 400; margin-left: 8px; }

/* Money */
.big { font: 500 30px/1.15 var(--font-mono); color: var(--title-text); letter-spacing: -0.03em; }
.pos { color: var(--success-text); }
.neg { color: var(--danger-text); }
.chip { display: inline-flex; align-items: center; height: 22px; padding: 0 9px; border-radius: 999px; font: 600 11.5px/1 var(--font-sans); background: var(--accent-tint8); color: var(--text-muted); }
.chip--pos { background: var(--success-tint16); color: var(--success-text); }
.chip--neg { background: var(--danger-tint10); color: var(--danger-text); }
.profit { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 16px; margin-top: 16px; }
.ladder td.is-pick { color: var(--title-text); }
.ladder tr.is-near td { background: var(--accent-tint8); }

/* How it works */
.prose { max-width: 760px; color: var(--text-muted); }
.prose p { margin: 0 0 12px; }
.prose h3 { margin-top: 22px; }
.prose ul { margin: 0 0 12px; padding-left: 0; list-style: none; }
.prose li { position: relative; padding-left: 22px; margin-bottom: 6px; }
.prose li .icon { position: absolute; left: 0; top: 3px; width: 15px; height: 15px; color: var(--brand); }
.formula { font: 12.5px/1.7 var(--font-mono); background: var(--background); border: 1px solid var(--card-border); border-radius: 8px; padding: 10px 14px; color: var(--text); overflow-x: auto; white-space: pre; margin: 0 0 12px; }

.foot { padding: 22px 0 36px; color: var(--text-tertiary); font-size: 12.5px; }
.foot .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

.toast { position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 9px 14px; font-size: 13px; color: var(--title-text); box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45); z-index: 10; }

/* ===== Narrow screens ===== */
@media (max-width: 920px) {
  .grid { grid-template-columns: minmax(0, 1fr); }
  .sticky { position: static; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 16px; }
  h1 { font-size: 22px; }
  h2 { font-size: 19px; }
  .card { padding: 14px; }
  .fields, .fields--3 { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .ratio { grid-template-columns: 1fr 1fr; }
  .ratio input[type="range"] { grid-column: 1 / -1; grid-row: 1; }
  .ratio__ends { grid-column: 1 / -1; }
  .flavour, .flavours__head { grid-template-columns: minmax(0, 1fr) 88px 32px; }
  .flavour__base { grid-column: 1 / 3; }
  .flavour__custom { grid-column: 1 / 3; }
  .flavours__head .flavours__base-h { display: none; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .table td + td, .table th + th { padding-left: 8px; }
  .brand-name span { display: none; }
  .big { font-size: 26px; }
  .formula { white-space: pre-wrap; font-size: 12px; }
  .hide-narrow { display: none; }
}