:root {
  color-scheme: dark;
  --bg: #0b0d0b;
  --surface: #141714;
  --surface-2: #1b1f1a;
  --line: #2a3028;
  --text: #f4f6ee;
  --muted: #9ca496;
  --accent: #c9f65b;
  --accent-strong: #ddff84;
  --accent-ink: #171d09;
  --danger: #ff7f73;
  --radius: 22px;
  --shadow: 0 18px 50px rgba(0, 0, 0, .28);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }

html { background: var(--bg); }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% -10%, rgba(201, 246, 91, .13), transparent 35%),
    var(--bg);
  color: var(--text);
}

button, input, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }

.app-shell {
  width: min(100%, 740px);
  min-height: 100vh;
  margin: 0 auto;
  position: relative;
}

.topbar {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 72px;
  padding: max(12px, env(safe-area-inset-top)) 20px 10px;
  background: rgba(11, 13, 11, .87);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
  color: var(--text);
  font-weight: 800;
  text-decoration: none;
  letter-spacing: -.03em;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 950;
  transform: rotate(-3deg);
}

.offline-badge, .pill, .type-pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 9px;
  color: var(--muted);
  background: var(--surface);
  font-size: .72rem;
  font-weight: 700;
}

.icon-button {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  cursor: pointer;
}

.icon-button svg { width: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

main { padding: 14px 18px 118px; }

.hero { padding: 18px 2px 20px; }
.eyebrow { margin: 0 0 8px; color: var(--accent); font-size: .75rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 560px; margin-bottom: 10px; font-size: clamp(2rem, 8vw, 3.4rem); line-height: .98; letter-spacing: -.055em; }
h2 { margin-bottom: 6px; font-size: 1.35rem; letter-spacing: -.035em; }
h3 { margin-bottom: 5px; font-size: 1rem; }
.lead, .section-copy, .muted { color: var(--muted); }
.lead { max-width: 520px; margin-bottom: 0; line-height: 1.55; }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
  margin: 28px 2px 14px;
}

.section-head p { margin-bottom: 0; }
.text-button { padding: 6px 0; border: 0; background: transparent; color: var(--accent); font-weight: 750; cursor: pointer; }

.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; }
.stat-card { min-width: 0; padding: 15px 12px; border: 1px solid var(--line); border-radius: 18px; background: rgba(20, 23, 20, .84); }
.stat-card strong { display: block; overflow: hidden; font-size: 1.4rem; letter-spacing: -.04em; text-overflow: ellipsis; }
.stat-card span { color: var(--muted); font-size: .72rem; }

.muscle-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 11px; }
.muscle-card {
  position: relative;
  min-height: 148px;
  padding: 17px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(145deg, var(--surface-2), var(--surface));
  text-align: left;
  cursor: pointer;
}
.muscle-card::after { content: attr(data-letter); position: absolute; right: -5px; bottom: -25px; color: rgba(201, 246, 91, .07); font-size: 7rem; font-weight: 950; line-height: 1; }
.muscle-card:hover, .muscle-card:focus-visible { border-color: #536437; }
.muscle-icon { display: grid; place-items: center; width: 42px; height: 42px; margin-bottom: 22px; border-radius: 14px; background: rgba(201, 246, 91, .12); color: var(--accent); font-size: 1.25rem; font-weight: 900; }
.muscle-card strong, .muscle-card small { position: relative; z-index: 1; display: block; }
.muscle-card strong { font-size: 1.1rem; }
.muscle-card small { margin-top: 3px; color: var(--muted); }

.exercise-list, .history-list { display: grid; gap: 10px; }
.exercise-card, .history-card, .empty-card, .settings-card, .exercise-detail-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.exercise-card { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 13px; width: 100%; padding: 14px; text-align: left; }
.exercise-card-main { min-width: 0; border: 0; background: transparent; color: inherit; text-align: left; cursor: pointer; }
.exercise-avatar { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 15px; background: var(--surface-2); color: var(--accent); font-weight: 900; }
.exercise-card h3 { overflow: hidden; margin: 0 0 5px; text-overflow: ellipsis; white-space: nowrap; }
.exercise-meta { display: flex; align-items: center; gap: 7px; color: var(--muted); font-size: .75rem; }
.favorite-button { width: 40px; height: 40px; border: 0; background: transparent; color: #626a5d; cursor: pointer; }
.favorite-button svg { width: 24px; fill: transparent; stroke: currentColor; stroke-width: 1.8; }
.favorite-button.is-favorite { color: var(--accent); }
.favorite-button.is-favorite svg { fill: currentColor; }

.back-button { display: inline-flex; align-items: center; gap: 7px; padding: 10px 0; border: 0; background: transparent; color: var(--muted); cursor: pointer; }
.back-button svg { width: 19px; fill: none; stroke: currentColor; stroke-width: 2; }
.detail-title { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin: 10px 0 20px; }
.detail-title h1 { margin-bottom: 8px; font-size: clamp(2rem, 9vw, 3rem); }
.exercise-detail-card { padding: 17px; margin-bottom: 14px; }
.last-performance { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.last-performance strong { font-size: 1.1rem; }

.set-table { display: grid; gap: 9px; margin-top: 16px; }
.set-header, .set-row { display: grid; grid-template-columns: 34px 1fr 1fr 38px; gap: 8px; align-items: center; }
.set-header { color: var(--muted); font-size: .72rem; text-align: center; }
.set-number { display: grid; place-items: center; width: 31px; height: 31px; border-radius: 10px; background: var(--surface-2); color: var(--muted); font-size: .78rem; font-weight: 800; }
.set-row input, .app-dialog input, .app-dialog select {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 13px;
  outline: none;
  background: #0e110e;
  color: var(--text);
  text-align: center;
}
.set-row input:focus, .app-dialog input:focus, .app-dialog select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(201, 246, 91, .1); }
.remove-set { border: 0; background: transparent; color: var(--muted); font-size: 1.3rem; cursor: pointer; }
.secondary-button, .primary-button, .danger-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 18px;
  border-radius: 15px;
  font-weight: 800;
  cursor: pointer;
}
.primary-button { width: 100%; border: 0; background: var(--accent); color: var(--accent-ink); }
.primary-button:hover { background: var(--accent-strong); }
.secondary-button { border: 1px solid var(--line); background: var(--surface-2); color: var(--text); }
.danger-button { border: 1px solid rgba(255, 127, 115, .3); background: rgba(255, 127, 115, .08); color: var(--danger); }
.add-set-button { width: 100%; margin: 12px 0 10px; }

.chart { display: flex; align-items: flex-end; gap: 7px; height: 120px; padding-top: 18px; }
.chart-bar { position: relative; flex: 1; min-width: 0; height: var(--height); border-radius: 7px 7px 3px 3px; background: linear-gradient(180deg, var(--accent), #708d2d); }
.chart-bar span { position: absolute; right: 50%; bottom: calc(100% + 5px); transform: translateX(50%); color: var(--muted); font-size: .64rem; white-space: nowrap; }
.chart-empty { display: grid; place-items: center; height: 100px; color: var(--muted); font-size: .85rem; }

.history-card { padding: 16px; }
.history-card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.history-card time { color: var(--muted); font-size: .74rem; }
.sets-summary { display: flex; flex-wrap: wrap; gap: 7px; margin: 13px 0 0; padding: 0; list-style: none; }
.sets-summary li { padding: 7px 9px; border-radius: 10px; background: var(--surface-2); color: #d8ddd2; font-size: .78rem; }
.history-action { border: 0; background: transparent; color: var(--muted); cursor: pointer; }

.empty-card { padding: 30px 20px; color: var(--muted); text-align: center; }
.empty-card strong { display: block; margin-bottom: 7px; color: var(--text); font-size: 1.05rem; }
.empty-card .secondary-button { margin-top: 12px; }

.settings-stack { display: grid; gap: 12px; }
.settings-card { padding: 18px; }
.settings-card p { color: var(--muted); line-height: 1.5; }
.settings-actions { display: flex; flex-wrap: wrap; gap: 9px; }
.install-steps { margin: 14px 0 0; padding-left: 20px; color: var(--muted); line-height: 1.65; }

.bottom-nav {
  position: fixed;
  z-index: 30;
  right: 0;
  bottom: 0;
  left: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: min(100%, 740px);
  margin: 0 auto;
  padding: 8px 8px max(8px, env(safe-area-inset-bottom));
  border-top: 1px solid rgba(42, 48, 40, .8);
  background: rgba(14, 16, 14, .94);
  backdrop-filter: blur(20px);
}
.bottom-nav a { display: flex; flex-direction: column; align-items: center; gap: 4px; min-height: 54px; padding: 7px 2px 3px; border-radius: 14px; color: #737b6e; font-size: .65rem; font-weight: 700; text-decoration: none; }
.bottom-nav a[aria-current="page"] { color: var(--accent); background: rgba(201, 246, 91, .07); }
.bottom-nav svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }

.app-dialog { width: min(calc(100% - 28px), 520px); padding: 0; border: 1px solid var(--line); border-radius: 25px; background: var(--surface); color: var(--text); box-shadow: var(--shadow); }
.app-dialog::backdrop { background: rgba(0, 0, 0, .68); backdrop-filter: blur(4px); }
.app-dialog form { display: grid; gap: 15px; padding: 20px; }
.dialog-head { display: flex; align-items: flex-start; justify-content: space-between; }
.dialog-head h2 { margin-bottom: 0; }
.dialog-close { font-size: 1.5rem; }
.app-dialog label { display: grid; gap: 7px; color: var(--muted); font-size: .78rem; font-weight: 700; }
.app-dialog input, .app-dialog select { padding: 0 13px; text-align: left; }

.session-banner, .motivation-card {
  position: relative;
  margin: 8px 0 18px;
  padding: 18px;
  overflow: hidden;
  border: 1px solid rgba(201, 246, 91, .28);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(201, 246, 91, .14), rgba(20, 23, 20, .94));
}
.session-banner::after, .motivation-card::after { content: ""; position: absolute; width: 130px; height: 130px; right: -55px; top: -62px; border-radius: 50%; background: rgba(201, 246, 91, .09); }
.session-banner-head, .workout-card-head, .template-card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; }
.session-banner h2, .motivation-card h2 { margin-bottom: 5px; }
.session-banner p, .motivation-card p { margin-bottom: 0; color: var(--muted); }
.session-actions, .action-row { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 15px; }
.session-actions .primary-button, .action-row .primary-button { width: auto; flex: 1; }
.session-actions .secondary-button, .action-row .secondary-button { flex: 1; }

.motivation-card strong { display: block; margin: 4px 0 6px; color: var(--accent); font-size: clamp(1.8rem, 8vw, 2.7rem); line-height: 1; letter-spacing: -.05em; }
.motivation-card.is-empty strong { color: var(--text); }

.workout-list, .template-list { display: grid; gap: 11px; }
.workout-card, .template-card {
  width: 100%;
  padding: 17px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  text-align: left;
}
button.workout-card, button.template-card { cursor: pointer; }
.workout-card h3, .template-card h3 { margin-bottom: 5px; font-size: 1.08rem; }
.workout-card time, .template-card p { color: var(--muted); font-size: .78rem; }
.workout-metrics { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 13px; }
.workout-metrics span { padding: 7px 9px; border-radius: 10px; background: var(--surface-2); color: #d7ddcf; font-size: .75rem; }
.chevron { color: var(--accent); font-size: 1.4rem; line-height: 1; }
.workout-exercise-list { display: grid; gap: 9px; margin-top: 14px; }
.workout-exercise {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface-2);
  color: var(--text);
  text-align: left;
  cursor: pointer;
}
.workout-exercise strong, .workout-exercise small { display: block; }
.workout-exercise small { margin-top: 4px; color: var(--muted); }
.planned-list { display: flex; gap: 7px; margin-top: 13px; overflow-x: auto; padding-bottom: 3px; scrollbar-width: none; }
.planned-list::-webkit-scrollbar { display: none; }
.planned-chip { flex: 0 0 auto; padding: 8px 11px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface-2); color: var(--muted); font-size: .75rem; }
.planned-chip.is-done { border-color: rgba(201, 246, 91, .35); color: var(--accent); }

.template-dialog { max-height: min(90vh, 760px); }
.template-dialog form { max-height: min(90vh, 760px); overflow-y: auto; }
.picker-label { margin: 0 0 9px; color: var(--muted); font-size: .78rem; font-weight: 700; }
.template-picker { display: grid; gap: 12px; }
.picker-group { padding: 12px; border: 1px solid var(--line); border-radius: 16px; background: #0e110e; }
.picker-group h3 { margin-bottom: 8px; color: var(--accent); font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; }
.check-row { display: flex !important; grid-template-columns: none !important; flex-direction: row; align-items: center; gap: 10px !important; min-height: 40px; color: var(--text) !important; cursor: pointer; }
.check-row input { width: 20px !important; min-height: 20px !important; accent-color: var(--accent); }
.template-empty { padding: 18px; border: 1px dashed var(--line); border-radius: 17px; color: var(--muted); text-align: center; }

.toast { position: fixed; z-index: 100; right: 18px; bottom: calc(90px + env(safe-area-inset-bottom)); left: 18px; max-width: 470px; margin: auto; padding: 13px 16px; border: 1px solid #536437; border-radius: 14px; background: #20271b; color: var(--text); box-shadow: var(--shadow); opacity: 0; transform: translateY(15px); pointer-events: none; transition: .2s ease; }
.toast.is-visible { opacity: 1; transform: translateY(0); }

@media (min-width: 600px) {
  main { padding-right: 28px; padding-left: 28px; }
  .topbar { padding-right: 30px; padding-left: 30px; }
  .muscle-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}