:root {
  --bg: #fcfdfe;
  --surface: #ffffff;
  --ink: #1b2733;
  --muted: #5e7185;
  --accent: #3e6e9e;
  --accent-deep: #2f5578;
  --tint: #edf3f9;
  --line: #e3eaf1;
  --radius: 14px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.45;
  padding: 0 14px calc(16px + env(safe-area-inset-bottom));
  max-width: 560px;
  margin-inline: auto;
}

/* ---- header ---- */

.top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 22px 2px 18px;
}

.brand {
  font-family: "Barlow Condensed", "Inter", sans-serif;
  font-weight: 600;
  font-size: 22px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-deep);
}

.today {
  font-size: 14px;
  color: var(--muted);
  text-transform: capitalize;
}

/* ---- day selector ---- */

.days {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--bg);
  padding: 6px 0 12px;
}

.day-btn {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  border-radius: 12px;
  padding: 11px 0 9px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  transition: border-color 0.15s, color 0.15s;
}

.day-btn .abbr {
  font-family: "Barlow Condensed", sans-serif;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.day-btn .kind {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: inherit;
  opacity: 0.75;
}

.day-btn[aria-selected="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.day-btn.is-today:not([aria-selected="true"]) {
  border-color: var(--accent);
  color: var(--accent-deep);
}

/* ---- hero ---- */

.hero { padding-top: 18px; }

.routine-title {
  margin: 0;
  font-family: "Barlow Condensed", "Inter", sans-serif;
  font-weight: 700;
  font-size: clamp(64px, 22vw, 110px);
  line-height: 0.9;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--ink);
}

.routine-title.rest { color: var(--accent); }

.meta {
  margin: 18px 0 10px;
  font-size: 13.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---- exercise cards ---- */

.exercises {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.card-row {
  appearance: none;
  border: none;
  background: none;
  font: inherit;
  color: inherit;
  text-align: left;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px 12px 12px;
  cursor: pointer;
}

.thumb {
  width: 92px;
  height: 92px;
  flex: none;
  border-radius: 10px;
  background: var(--tint);
  object-fit: cover;
}

.card-info { min-width: 0; flex: 1; }

.card-name {
  display: block;
  font-weight: 600;
  font-size: 16.5px;
  line-height: 1.3;
  margin: 0 0 4px;
}

.card-dose {
  display: block;
  margin: 0;
  font-size: 14.5px;
  color: var(--muted);
}

.card-dose strong {
  color: var(--accent-deep);
  font-weight: 600;
}

.chev {
  flex: none;
  color: var(--line);
  transition: transform 0.2s;
}

.card.open .chev { transform: rotate(180deg); color: var(--accent); }

.card-media {
  display: none;
  border-top: 1px solid var(--line);
  background: var(--tint);
}

.card.open .card-media { display: block; }

.card-media img {
  display: block;
  width: 100%;
  max-width: 380px;
  margin-inline: auto;
  mix-blend-mode: multiply;
}

/* ---- rest day ---- */

.rest-note {
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 26px 20px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

/* ---- footer ---- */

.foot {
  padding: 26px 2px 8px;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0.7;
}

/* ---- a11y ---- */

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}