/* Theme: follows the phone's light/dark setting, like RP. */
:root {
  --bg: #eeeff1; --card: #ffffff; --line: #e1e2e6; --text: #15161a; --muted: #6b6e76;
  --field: #f3f4f6; --field-line: #d6d8dd; --ph: #9a9da5; --chip: #e7e8ec; --nav: #ffffff;
  --pop: #ffffff; --pop-line: #e1e2e6; --pop-hover: #f1f2f4; --cell: #eceef1;
  --accent: #e5484d; --ok: #2f9e5c; --ok-soft: #d7f2e2; --ok-text: #1d7a44; --warn: #a67c00; --warn-soft: #fbf1cf; --blue: #2f6fed;
  --note: #fbf1cf; --note-text: #6b5300; --pain: #fde2e3; --pain-text: #b4232a;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111214; --card: #1c1d21; --line: #2c2e33; --text: #ececee; --muted: #9a9ca3;
    --field: #0c0d0f; --field-line: #2c2e33; --ph: #5f626a; --chip: #2a2c31; --nav: #16171a;
    --pop: #2a2c33; --pop-line: #3a3d45; --pop-hover: #33363e; --cell: #24262b;
    --ok-soft: #12301f; --ok-text: #6fd99a; --warn: #d4a017; --warn-soft: #3a3110; --blue: #3b82f6;
    --note: #2d2a12; --note-text: #f1dc8a; --pain: #3b1a1c; --pain-text: #ff8a8e;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.4 system-ui, -apple-system, Segoe UI, Roboto, sans-serif; }
body { padding: env(safe-area-inset-top) 0 calc(72px + env(safe-area-inset-bottom)); }
main { max-width: 640px; margin: 0 auto; padding: 12px 16px 24px; }
h1 { font-size: 1.3rem; margin: 4px 0 6px; }
h2 { font-size: 1rem; margin: 18px 0 8px; }
a { color: inherit; text-decoration: none; }
.muted { color: var(--muted); } .small { font-size: .85rem; } .strong { font-weight: 600; } .right { text-align: right; } .big { font-size: 1.2rem; }
.caps { text-transform: uppercase; letter-spacing: .02em; }
.link { background: none; border: 0; padding: 0; color: inherit; font: inherit; text-decoration: underline; cursor: pointer; }
input, select, textarea { width: 100%; background: var(--field); color: var(--text); border: 1px solid var(--field-line); border-radius: 8px; padding: 10px; font: inherit; margin: 4px 0 10px; }
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--blue); border-color: transparent; }
input::placeholder { color: var(--ph); }
label { display: block; font-size: .85rem; color: var(--muted); margin-top: 6px; }
label.check { display: flex; gap: 8px; align-items: center; color: var(--text); }
label.check input { width: auto; margin: 0; }

.btn { display: inline-block; text-align: center; background: var(--accent); color: #fff; border: 0; border-radius: 10px; padding: 11px 16px; font: inherit; font-weight: 600; cursor: pointer; margin: 4px 0; }
.btn.ghost { background: transparent; border: 1px solid var(--line); color: var(--text); }
.btn.danger { background: transparent; border: 1px solid var(--pain); color: var(--pain-text); }
.btn.small { padding: 6px 12px; font-size: .85rem; }
.btn.wide { display: block; width: 100%; }
.icon { background: none; border: 0; color: var(--muted); font-size: 1.6rem; padding: 0 8px; cursor: pointer; line-height: 1; }
.icon:disabled { opacity: .3; }
.exbtns .icon.faint { opacity: .35; }
.icon.on { color: var(--accent); }
.icon.round { font-size: 1.3rem; width: 38px; height: 38px; border: 2px solid var(--text); border-radius: 50%; color: var(--text); margin-left: 8px; padding: 0; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px; margin: 8px 0; }
.row { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.card.row { color: inherit; }
.titlebar { display: flex; justify-content: space-between; align-items: center; }
.badge { display: inline-block; font-size: .72rem; padding: 2px 8px; border-radius: 99px; background: var(--chip); color: var(--muted); text-transform: uppercase; letter-spacing: .04em; margin-right: 4px; }
.badge.deload { background: var(--warn-soft); color: var(--warn); }
.badge.st-done { background: var(--ok-soft); color: var(--ok-text); }
.badge.st-partial { background: var(--warn-soft); color: var(--warn); }
.badge.pain { background: var(--pain); color: var(--pain-text); margin-top: 6px; }

/* Muscle-group tags (RP-style pill with three bars) */
.mg { display: inline-flex; align-items: center; gap: 3px; margin: 18px 0 6px; padding: 5px 12px; border-radius: 8px; font-size: .8rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em;
  --c: #888; color: var(--text); background: color-mix(in srgb, var(--c) 18%, transparent); border: 1px solid color-mix(in srgb, var(--c) 45%, transparent); }
.mg i { display: inline-block; width: 5px; height: 15px; border-radius: 2px; background: var(--c); }
.mg i:last-of-type { margin-right: 8px; }
.mg1 { --c: #e5484d; } .mg2 { --c: #12a5c9; } .mg3 { --c: #d63fb4; } .mg4 { --c: #8e5cf0; } .mg5 { --c: #f08c2e; } .mg6 { --c: #2f9e5c; }
.mg7 { --c: #c9488a; } .mg8 { --c: #3b82f6; } .mg9 { --c: #a67c52; } .mg10 { --c: #6366f1; } .mg11 { --c: #14b8a6; } .mg12 { --c: #d4a017; }

/* Day view */
.dayhead { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.exhead { display: flex; justify-content: space-between; align-items: flex-start; }
.exname { font-weight: 700; font-size: 1.05rem; }
.exbtns { display: flex; align-items: center; flex-shrink: 0; }
.exbtns .icon { display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 40px; padding: 0 6px; color: var(--text); }
.exnote { background: var(--note); color: var(--note-text); border-radius: 8px; padding: 8px 10px; font-size: .85rem; margin: 8px 0 4px; white-space: pre-wrap; cursor: pointer; }
.note { font-size: .82rem; color: var(--muted); margin: 6px 0 4px; }
.set { display: grid; grid-template-columns: 22px 1fr 1fr 44px; gap: 8px; align-items: center; }
.set.hdr { font-size: .72rem; color: var(--muted); text-transform: uppercase; margin-top: 6px; }
.set.hdr span:last-child { text-align: center; }
.set input { margin: 3px 0; text-align: center; padding: 9px 6px; }
.set .dots { min-width: 0; width: 22px; padding: 0; height: 40px; display: inline-flex; align-items: center; justify-content: center; color: var(--text); }
.set .dots svg { width: 20px; height: 20px; }
.set .log { width: 40px; height: 40px; border-radius: 8px; border: 2px solid var(--field-line); background: transparent; color: #fff; font-size: 1.1rem; cursor: pointer; justify-self: center; }
.set.done .log { background: var(--ok); border-color: var(--ok); }
.set.done input { border-color: var(--ok); }
.set.skip { opacity: .5; }
.sets { position: relative; }
.bwbanner { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); white-space: nowrap; background: var(--accent); color: #fff; border: 0; border-radius: 8px; padding: 12px 18px; font: inherit; font-weight: 600; cursor: pointer; box-shadow: 0 6px 18px rgba(0,0,0,.25); }
.fb label { margin-top: 10px; }
.seg { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 4px; }
.seg button { flex: 1; min-width: 70px; background: var(--field); color: var(--text); border: 1px solid var(--field-line); border-radius: 8px; padding: 8px 4px; font: inherit; font-size: .8rem; cursor: pointer; }
.seg button.on { background: var(--blue); border-color: var(--blue); color: #fff; }
.actions { display: flex; gap: 8px; margin-top: 16px; }
.actions .btn { flex: 1; }

/* Calendar / weeks grid */
.cal { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px; margin: 10px 0; }
.calhead { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.calgrid { display: grid; grid-template-columns: repeat(var(--cols), 1fr); gap: 4px; }
.calwk { text-align: center; font-size: .8rem; line-height: 1.3; padding-bottom: 6px; }
.calwk b { display: block; font-size: .95rem; }
.calwk span { color: var(--muted); }
.grid { display: grid; grid-template-columns: 56px repeat(var(--cols), 1fr); gap: 4px; margin: 12px 0; }
.grid .wk { font-size: .8rem; line-height: 1.2; }
.cell { position: relative; display: flex; align-items: center; justify-content: center; border-radius: 6px; padding: 10px 0; font-size: .75rem; background: var(--cell); }
.cell.st-done { background: var(--ok-soft); color: var(--ok-text); border-color: transparent; } .cell.st-partial { background: var(--warn-soft); color: var(--warn); } .cell.st-skipped { color: var(--muted); text-decoration: line-through; }
.cell.sel { outline: 2px solid var(--text); outline-offset: -2px; }
.cell.cur::after { content: ''; position: absolute; top: 5px; right: 5px; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.tbl { width: 100%; border-collapse: collapse; font-size: .85rem; }
.tbl th, .tbl td { padding: 6px 4px; border-bottom: 1px solid var(--line); text-align: center; }
.tbl td:first-child { text-align: left; }

/* Exercise library */
h1.xl { font-size: 1.7rem; }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--c); margin-right: 5px; vertical-align: 1px; }
.mgt { color: var(--c); font-weight: 600; }
.filterbar { display: flex; align-items: center; gap: 10px; width: calc(100% + 32px); margin: 0 -16px; padding: 10px 16px; background: var(--chip); border: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); color: var(--text); font: inherit; cursor: pointer; }
.filterbar svg { width: 20px; height: 20px; }
.exrow { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.exrname { font-size: 1rem; margin-bottom: 2px; }
.when { display: flex; align-items: center; gap: 4px; margin-top: 3px; }
.when svg { width: 13px; height: 13px; }
.exrow > span svg { width: 20px; height: 20px; }
.pop { max-height: calc(100vh - 90px); overflow-y: auto; }
.pop button:disabled { opacity: .4; cursor: default; }
.pophead + .pophead { display: none; }
.pop .pophead:not(:first-child) { margin-top: 6px; }

/* Lists, history */
.list .row { padding: 11px 4px; border-bottom: 1px solid var(--line); width: 100%; background: none; border-left: 0; border-right: 0; border-top: 0; color: var(--text); font: inherit; text-align: left; cursor: pointer; }
.row.mv { padding: 8px 0; border-bottom: 1px solid var(--line); }
.chart { width: 100%; height: 120px; color: var(--accent); }
.hgroup { text-transform: uppercase; margin: 18px 0 6px; font-size: .9rem; letter-spacing: .02em; }
.hrow { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); color: var(--text); }
.hsets { font-size: 1.05rem; }
.hwhen { text-align: right; font-size: .8rem; color: var(--muted); text-transform: uppercase; white-space: nowrap; }
.hwhen b { color: var(--text); font-size: 1rem; }

/* Bottom nav */
nav { position: fixed; left: 0; right: 0; bottom: 0; display: flex; background: var(--nav); border-top: 1px solid var(--line); padding-bottom: env(safe-area-inset-bottom); z-index: 5; }
nav a { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 3px; padding: 9px 0 10px; font-size: .78rem; color: var(--muted); }
nav svg { width: 26px; height: 26px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
nav a.on { color: var(--text); font-weight: 600; }
nav a.on svg { stroke-width: 2.2; }

/* Overlays */
#rest { position: fixed; left: 16px; right: 16px; bottom: calc(70px + env(safe-area-inset-bottom)); max-width: 608px; margin: 0 auto; background: var(--blue); color: #fff; border-radius: 12px; padding: 10px 12px; display: flex; gap: 8px; align-items: center; z-index: 6; }
#rest[hidden], #toast[hidden], #modal[hidden] { display: none; }
#rest span { flex: 1; font-weight: 700; }
#rest button { background: rgba(0,0,0,.25); color: #fff; border: 0; border-radius: 8px; padding: 6px 10px; font: inherit; cursor: pointer; }
#toast { position: fixed; top: calc(12px + env(safe-area-inset-top)); left: 50%; transform: translateX(-50%); background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 10px; z-index: 40; max-width: 90vw; }
#modal { position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 10; display: flex; align-items: flex-end; justify-content: center; }
.sheet { background: var(--card); width: 100%; max-width: 640px; max-height: 88vh; overflow: auto; border-radius: 16px 16px 0 0; padding: 16px 16px calc(16px + env(safe-area-inset-bottom)); }
.sheet .list { max-height: 50vh; overflow: auto; }
.pop { position: fixed; z-index: 30; min-width: 220px; background: var(--pop); border: 1px solid var(--pop-line); border-radius: 12px; padding: 6px 0; box-shadow: 0 12px 32px rgba(0,0,0,.25); }
.pophead { padding: 8px 16px; font-size: 1.1rem; font-weight: 700; color: var(--muted); border-bottom: 1px solid var(--pop-line); margin: 0 8px 4px; }
.pop button { display: flex; align-items: center; gap: 12px; width: 100%; background: none; border: 0; color: var(--text); font: inherit; padding: 11px 16px; text-align: left; cursor: pointer; }
.pop button:active { background: var(--pop-hover); }
.pop button.danger { color: var(--pain-text); }
.pop button.on { color: var(--blue); font-weight: 600; }
.pop button svg { width: 20px; height: 20px; flex-shrink: 0; }
#video { position: fixed; inset: 0; z-index: 50; background: #000; display: flex; flex-direction: column; padding-top: env(safe-area-inset-top); }
#video iframe { flex: 1; width: 100%; border: 0; }
#video .vclose { align-self: flex-end; background: none; border: 0; color: #fff; font-size: 1.8rem; padding: 12px 18px; cursor: pointer; }