/*
 * One stylesheet, no framework. The palette is barbell-plate colours — the
 * yellow of a 15kg, the blue of a 20 — because this is a weightlifting site and
 * the reference is free.
 */
:root {
  color-scheme: light dark;
  --ink: #12161c;
  --bg: #ffffff;
  --panel: #f4f6f9;
  --line: #dfe4ec;
  --muted: #5b6472;
  --accent: #2f6df6;
  --plate-yellow: #f2c200;
  --plate-blue: #1f6fd0;
  --plate-red: #d33a2c;
  --good: #1a7f4b;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e7ecf3; --bg: #0b0e12; --panel: #141922; --line: #263041;
    --muted: #93a0b4; --accent: #6ea0ff; --plate-blue: #4b91e8; --good: #43c98a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main { max-width: 760px; margin: 0 auto; padding: 40px 22px 72px; }
h1 { font-size: clamp(30px, 6vw, 46px); letter-spacing: -0.03em; line-height: 1.1; margin: 0 0 14px; }
h2 { font-size: clamp(21px, 3.4vw, 27px); letter-spacing: -0.02em; margin: 44px 0 10px; }
h3 { font-size: 17px; margin: 26px 0 6px; }
a { color: var(--accent); }
p { margin: 0 0 14px; }

.lede { font-size: clamp(17px, 2.4vw, 20px); color: var(--muted); margin-bottom: 26px; }

/* The site header and footer, on every page via BaseLayout. */
.masthead {
  display: flex; flex-wrap: wrap; gap: 6px 18px; align-items: baseline;
  max-width: 760px; margin: 0 auto; padding: 20px 22px 0;
}
.masthead .wordmark { font-weight: 700; letter-spacing: -0.03em; color: var(--ink); text-decoration: none; font-size: 19px; }
.masthead nav { display: flex; gap: 16px; font-size: 15px; }
.siteftr {
  max-width: 760px; margin: 0 auto; padding: 28px 22px 44px;
  border-top: 1px solid var(--line); color: var(--muted); font-size: 14px;
}

/* Plate-coloured rule under the wordmark. Purely decorative. */
.bar { height: 4px; border-radius: 2px; margin: 14px 0 30px; max-width: 760px;
  background: linear-gradient(90deg, var(--plate-red) 0 22%, var(--plate-blue) 22% 55%, var(--plate-yellow) 55% 100%); }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 18px 18px 4px; margin: 18px 0; }

/* The planner form. */
form.planner { display: grid; gap: 14px; }
.row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; }
label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 4px; }
label .hint { display: block; font-weight: 400; color: var(--muted); font-size: 13px; }
input, select {
  width: 100%; padding: 9px 11px; font: inherit; color: var(--ink);
  background: var(--bg); border: 1px solid var(--line); border-radius: 8px;
}
input:focus-visible, select:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button {
  font: inherit; font-weight: 650; padding: 11px 20px; border-radius: 8px; cursor: pointer;
  background: var(--accent); color: #fff; border: 1px solid transparent;
}
button:hover { filter: brightness(1.08); }

/* The result. */
.headline { font-size: clamp(19px, 3vw, 24px); font-weight: 700; letter-spacing: -0.02em; margin: 0 0 8px; }
.block { border-left: 3px solid var(--plate-blue); padding: 2px 0 2px 14px; margin: 0 0 18px; }
.block .role { font-size: 12px; text-transform: uppercase; letter-spacing: 0.09em; color: var(--muted); font-weight: 700; }
.block .what { font-weight: 650; }
.block .why { color: var(--muted); font-size: 15px; margin: 4px 0 0; }
.ladder { color: var(--muted); font-size: 14px; margin: 4px 0 0; }

table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; padding: 7px 10px 7px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.out { color: var(--plate-red); font-weight: 650; }
.in { color: var(--good); font-weight: 650; }

.wrap { overflow-x: auto; }
.error { color: var(--plate-red); font-weight: 600; }
[hidden] { display: none !important; }

ul.plain { list-style: none; padding: 0; }
ul.plain li { border-bottom: 1px solid var(--line); padding: 12px 0; }
.cue { border-left: 3px solid var(--plate-yellow); padding-left: 12px; font-weight: 600; margin: 6px 0; }
.pct { color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }