/* Rink palette: ice surface, navy ink, red line, blue line. */
:root {
  --ice: #eef3f6;
  --surface: #ffffff;
  --boards: #d5dee5;
  --ink: #0e2238;
  --ink-soft: #4b5d70;
  --red: #c8102e;
  --blue: #1f4fa3;
  --done: #e3ecf8;
  --radius-lg: 14px;
  --radius-sm: 8px;
  --gutter: 16px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ice: #0a1828;
    --surface: #10233a;
    --boards: #233953;
    --ink: #e8eef4;
    --ink-soft: #9fb1c3;
    --red: #ff4d63;
    --blue: #7fa6ef;
    --done: #15304f;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --ice: #0a1828;
  --surface: #10233a;
  --boards: #233953;
  --ink: #e8eef4;
  --ink-soft: #9fb1c3;
  --red: #ff4d63;
  --blue: #7fa6ef;
  --done: #15304f;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ice);
  color: var(--ink);
  font: 400 16px/1.5 "Barlow", system-ui, sans-serif;
}
h1, h2, .tab-letter, .brand, .btn, .ex-num, .s-day {
  font-family: "Barlow Condensed", "Arial Narrow", sans-serif;
}
button { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; border-radius: 4px; }

.skip { position: absolute; left: -999px; }
.skip:focus { left: var(--gutter); top: 8px; background: var(--surface); padding: 8px 12px; z-index: 10; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

.shell { max-width: 880px; margin: 0 auto; padding: 0 var(--gutter) 96px; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; gap: 4px;
  margin: 0 calc(-1 * var(--gutter));
  padding: 10px var(--gutter);
  padding-top: max(10px, env(safe-area-inset-top));
  background: #0e2238;
  color: #eef3f6;
}
.brand {
  display: flex; align-items: center; gap: 8px;
  margin-right: auto;
  font-weight: 800; font-size: 22px; letter-spacing: .01em; white-space: nowrap;
}
@media (max-width: 440px) { .brand-text { display: none; } .nav button { padding: 8px 8px; } }
.brand-line { width: 6px; height: 22px; background: var(--red); border-radius: 2px; }
.nav button {
  background: none; border: 0; color: inherit;
  padding: 8px 10px; border-radius: var(--radius-sm);
  font-weight: 600; opacity: .75; cursor: pointer;
}
.nav button[aria-current="page"] { opacity: 1; box-shadow: inset 0 -3px 0 var(--red); border-radius: 0; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .nav { background: #061120; }
}

/* ---------- Day tabs ---------- */
.day-tabs {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px;
  margin: 20px 0 8px;
}
.day-tabs button {
  display: flex; flex-direction: column; align-items: flex-start;
  padding: 10px 12px;
  background: var(--surface);
  border: 2px solid var(--boards);
  border-radius: var(--radius-lg);
  cursor: pointer; text-align: left;
}
.day-tabs button[aria-selected="true"] { border-color: var(--ink); }
.tab-letter { font-size: 34px; font-weight: 800; line-height: 1; }
.tab-focus { font-size: 13px; color: var(--ink-soft); line-height: 1.25; }
.day-tabs .is-next .tab-letter { color: var(--red); }

.day-head h1 {
  margin: 16px 0 0;
  font-size: clamp(44px, 12vw, 72px); font-weight: 800; line-height: .95;
}
.day-meta { margin: 6px 0 20px; color: var(--ink-soft); }
.linkish {
  background: none; border: 0; padding: 0;
  color: var(--blue); text-decoration: underline; text-underline-offset: 3px; cursor: pointer;
}

/* ---------- Exercise cards ---------- */
.ex-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.ex-card {
  display: grid;
  grid-template-columns: 112px 1fr;
  grid-template-areas: "photo info" "inputs inputs";
  gap: 12px 14px;
  padding: 14px;
  background: var(--surface);
  border-radius: var(--radius-lg);
  border-left: 6px solid var(--boards);
}
.ex-card.is-done { border-left-color: var(--blue); background: var(--done); }
@media (min-width: 640px) {
  .ex-card { grid-template-columns: 160px 1fr; grid-template-areas: "photo info" "photo inputs"; }
}
.ex-photo {
  grid-area: photo; align-self: start;
  padding: 0; border: 0; background: none; cursor: zoom-in;
  border-radius: var(--radius-sm); overflow: hidden;
  aspect-ratio: 1;
}
.ex-photo img { display: block; width: 100%; height: 100%; object-fit: cover; background: var(--boards); }
.ex-photo img.placeholder { cursor: default; }
.ex-info { grid-area: info; min-width: 0; }
.ex-info h2 { display: flex; align-items: baseline; gap: 8px; margin: 0; font-size: 24px; line-height: 1.1; font-weight: 700; }
.ex-num { color: var(--red); font-weight: 800; }
.ex-name { background: none; border: 0; padding: 0; text-align: left; cursor: pointer; font: inherit; }
.ex-name:hover { text-decoration: underline; text-underline-offset: 3px; }
.ex-presc { margin: 4px 0 0; font-weight: 600; color: var(--blue); }
.ex-cues { margin: 6px 0 0; color: var(--ink-soft); font-size: 15px; max-width: 60ch; }
.ex-last { margin: 6px 0 0; font-size: 14px; }
.ex-inputs { grid-area: inputs; min-width: 0; }

.steps { display: grid; gap: 10px; }
.step { border-top: 1px dashed var(--boards); padding-top: 8px; }
.step-label { margin: 0 0 6px; font-weight: 600; font-size: 14px; }
.derived { color: var(--red); font-weight: 700; margin-left: 4px; }
.step-fields { display: flex; flex-wrap: wrap; gap: 10px; }
.field { display: grid; gap: 2px; }
.field label { font-size: 13px; color: var(--ink-soft); }
.field-row { display: flex; align-items: center; gap: 6px; }
.field input {
  width: 96px; padding: 9px 10px;
  font: 600 18px/1 "Barlow", sans-serif; color: var(--ink);
  background: var(--ice);
  border: 2px solid var(--boards); border-radius: var(--radius-sm);
}
.field input:focus { border-color: var(--blue); outline: none; }
.suffix { color: var(--ink-soft); font-size: 14px; }
.hint { margin: 2px 0 0; font-size: 13px; color: var(--ink-soft); }
.check { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; cursor: pointer; padding: 6px 0; }
.check input { width: 26px; height: 26px; accent-color: var(--blue); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 46px; padding: 0 20px;
  font-size: 20px; font-weight: 700;
  background: var(--surface); color: var(--ink);
  border: 2px solid var(--ink); border-radius: var(--radius-sm);
  cursor: pointer; text-decoration: none;
}
.btn.primary { background: var(--red); border-color: var(--red); color: #fff; }
.btn.ghost { background: none; border-color: transparent; color: var(--ink-soft); }
.btn.small { min-height: 36px; font-size: 17px; padding: 0 12px; }
.btn.danger { color: var(--red); }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 10px 0; }
.finish { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }

/* ---------- History ---------- */
.sessions { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 10px; }
.session details { background: var(--surface); border-radius: var(--radius-lg); padding: 4px 14px; }
.session summary { display: flex; align-items: baseline; gap: 12px; padding: 10px 0; cursor: pointer; list-style: none; }
.session summary::-webkit-details-marker { display: none; }
.s-day { font-size: 28px; font-weight: 800; color: var(--red); width: 22px; }
.s-date { font-weight: 600; }
.s-count { margin-left: auto; color: var(--ink-soft); font-size: 14px; }
.s-rows { list-style: none; padding: 0; margin: 0 0 8px; }
.s-rows li { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; border-top: 1px solid var(--boards); font-size: 15px; }
.s-rows li span { text-align: right; color: var(--ink-soft); }
.empty { margin: 24px 0; color: var(--ink-soft); }
.empty .btn { margin-top: 8px; }

.ex-history .back { margin-top: 16px; }
.ex-hero { display: grid; grid-template-columns: 140px 1fr; gap: 16px; align-items: start; margin: 12px 0 20px; }
.ex-hero h1 { margin: 0; font-size: clamp(32px, 8vw, 48px); line-height: 1; }
@media (max-width: 420px) { .ex-hero { grid-template-columns: 1fr; } .ex-hero .ex-photo { max-width: 220px; } }
.log-table { width: 100%; border-collapse: collapse; background: var(--surface); border-radius: var(--radius-lg); overflow: hidden; }
.log-table th, .log-table td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--boards); }
.log-table th { font-size: 13px; color: var(--ink-soft); font-weight: 600; }

/* ---------- Settings ---------- */
.settings fieldset { border: 0; margin: 20px 0; padding: 16px; background: var(--surface); border-radius: var(--radius-lg); }
.settings legend { float: left; width: 100%; margin-bottom: 8px; font: 700 24px/1.1 "Barlow Condensed", sans-serif; }
.radio { display: flex; gap: 12px; align-items: flex-start; padding: 10px 0; border-top: 1px solid var(--boards); cursor: pointer; clear: both; }
.radio input { margin-top: 4px; width: 20px; height: 20px; accent-color: var(--red); flex: none; }
.radio span { display: grid; }
.radio small { color: var(--ink-soft); font-size: 14px; }
.radio.inline { display: inline-flex; border: 0; margin-right: 20px; clear: none; }

/* ---------- Overlays ---------- */
#lightbox { border: 0; padding: 0; background: transparent; max-width: min(92vw, 640px); }
#lightbox::backdrop { background: rgba(6, 17, 32, .8); }
#lightbox img { display: block; width: 100%; border-radius: var(--radius-lg); }
.lb-close {
  position: absolute; top: 8px; right: 8px;
  width: 40px; height: 40px; border-radius: 50%; border: 0;
  background: rgba(6, 17, 32, .7); color: #fff; font-size: 18px; cursor: pointer;
}
#toast {
  position: fixed; left: 50%; bottom: max(20px, env(safe-area-inset-bottom));
  transform: translate(-50%, 20px); opacity: 0;
  max-width: calc(100vw - 32px);
  padding: 12px 16px; border-radius: var(--radius-sm);
  background: var(--ink); color: var(--ice); font-weight: 500;
  transition: opacity .2s, transform .2s; pointer-events: none;
}
#toast.show { opacity: 1; transform: translate(-50%, 0); }
@media (prefers-reduced-motion: reduce) { #toast { transition: none; } }

/* ---------- Editing and adding ---------- */
.day-head { position: relative; }
.edit-toggle { position: absolute; right: 0; top: 18px; }
.edit-toggle[aria-pressed="true"] { color: var(--red); }
.add-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 14px; }
.add-bar .btn:first-child { border-style: dashed; flex: 1 1 auto; }
.edit-controls { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 8px; border-top: 1px dashed var(--boards); padding-top: 10px; }
.btn:disabled { opacity: .35; cursor: default; }

#add-dialog {
  width: min(560px, calc(100vw - 24px)); max-height: calc(100vh - 48px);
  border: 0; border-radius: var(--radius-lg); padding: 0;
  background: var(--surface); color: var(--ink);
}
#add-dialog::backdrop { background: rgba(6, 17, 32, .6); }
.add-head { position: sticky; top: 0; z-index: 1; display: flex; align-items: center; justify-content: space-between; padding: 14px 16px 8px; background: var(--surface); }
.add-head h2 { margin: 0; font: 800 28px/1 "Barlow Condensed", sans-serif; }
.add-close { width: 40px; height: 40px; border: 0; border-radius: 50%; background: var(--ice); cursor: pointer; font-size: 16px; }
#add-body { padding: 0 16px 20px; }
.search { width: 100%; padding: 10px 12px; font: 500 17px "Barlow", sans-serif; color: var(--ink); background: var(--ice); border: 2px solid var(--boards); border-radius: var(--radius-sm); }
.search:focus { border-color: var(--blue); outline: none; }
.pick-list { list-style: none; margin: 10px 0 0; padding: 0; max-height: 46vh; overflow-y: auto; }
.pick { display: flex; gap: 12px; align-items: center; width: 100%; padding: 8px 4px; background: none; border: 0; border-bottom: 1px solid var(--boards); text-align: left; cursor: pointer; }
.pick:hover { background: var(--ice); }
.pick img { width: 56px; height: 56px; border-radius: 6px; object-fit: cover; flex: none; background: var(--boards); }
.pick span { display: grid; }
.pick small { color: var(--ink-soft); }
.create-form { display: grid; gap: 6px; margin-top: 18px; padding-top: 14px; border-top: 2px solid var(--boards); }
.create-form h3 { margin: 0 0 4px; font: 700 22px/1.1 "Barlow Condensed", sans-serif; }
.create-form label:not(.check) { font-size: 13px; color: var(--ink-soft); margin-top: 4px; }
.create-form input[type="text"], .create-form select, .create-form textarea {
  width: 100%; padding: 9px 10px; font: 500 16px "Barlow", sans-serif; color: var(--ink);
  background: var(--ice); border: 2px solid var(--boards); border-radius: var(--radius-sm);
}
.create-form .btn { margin-top: 8px; }

/* ---------- Muscles ---------- */
.ex-works { margin: 6px 0 0; font-size: 14px; color: var(--ink-soft); }
.m-group h2 { margin: 24px 0 8px; font: 700 26px/1.1 "Barlow Condensed", sans-serif; }
.m-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.m-row { padding: 10px 14px; background: var(--surface); border-radius: var(--radius-sm); border-left: 6px solid var(--blue); }
.m-row.is-light { border-left-color: #d98e04; }
.m-row.is-missing { border-left-color: var(--red); }
.m-main { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.m-name { font-weight: 600; }
.m-status { font-size: 14px; font-weight: 600; color: var(--blue); }
.is-light .m-status { color: #b07300; }
.is-missing .m-status { color: var(--red); }
.m-hits { margin: 2px 0 0; font-size: 14px; color: var(--ink-soft); }
.m-fix { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.muscle-picks { border: 0; padding: 0; margin: 8px 0 0; display: flex; flex-wrap: wrap; gap: 6px; }
.muscle-picks legend { font-size: 13px; color: var(--ink-soft); margin-bottom: 4px; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border: 1px solid var(--boards); border-radius: 999px; font-size: 14px; cursor: pointer; }
.chip:has(input:checked) { border-color: var(--blue); background: var(--done); }
.chip input { accent-color: var(--blue); }
@media (max-width: 440px) { .nav button { padding: 8px 6px; font-size: 15px; } }