:root {
  --bg: #040805;
  --panel: #07110b;
  --panel-2: #0d1d12;
  --text: #f4fff7;
  --muted: #9caf9f;
  --line: rgba(213,255,222,.13);
  --green: #20e06c;
  --green-2: #11a24b;
  --red: #ef4444;
  --orange: #f97316;
  --black: #020403;
  --shadow: 0 22px 70px rgba(0,0,0,.55);
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }

body {
  margin: 0;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, Arial, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(32,224,108,.24), transparent 28rem),
    radial-gradient(circle at 88% 12%, rgba(87,209,99,.16), transparent 24rem),
    linear-gradient(160deg, #020403, #07110b 54%, #031407);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .075;
  background:
    linear-gradient(90deg, transparent 0 48%, rgba(255,255,255,.55) 49% 51%, transparent 52%),
    repeating-linear-gradient(90deg, rgba(255,255,255,.06) 0 1px, transparent 1px 64px);
}

button, input, select { font: inherit; }
button { cursor: pointer; border: 0; }

.app-shell {
  width: min(100%, 490px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 20px 16px 98px;
  position: relative;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: env(safe-area-inset-top);
  margin-bottom: 20px;
}

h1, h2, h3, p { margin: 0; }
h1 { font-size: 27px; letter-spacing: -0.04em; }
h2 { font-size: 24px; letter-spacing: -0.03em; }
h3 { font-size: 18px; }

.eyebrow {
  color: var(--green);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: .14em;
  font-weight: 900;
  margin-bottom: 6px;
}

.muted { color: var(--muted); line-height: 1.45; }
.view { display: none; }
.view.active { display: block; }

.setup-card, .hero-card, .exercise-card, .detail-card, .timer-card, .coach-card, .history-card, .keeper-selector-card {
  background: rgba(7,17,11,.9);
  border: 1px solid var(--line);
  border-radius: 25px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.setup-card { padding: 22px; }

.form-grid { display: grid; gap: 14px; margin-top: 20px; }

label {
  display: grid;
  gap: 7px;
  color: #d9ffe2;
  font-size: 13px;
  font-weight: 800;
}

select, input {
  width: 100%;
  color: var(--text);
  background: rgba(255,255,255,.055);
  border: 1px solid var(--line);
  border-radius: 15px;
  padding: 13px 14px;
  outline: none;
}

select:focus, input:focus {
  border-color: rgba(32,224,108,.72);
  box-shadow: 0 0 0 4px rgba(32,224,108,.09);
}

.keepers-box {
  margin-top: 6px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255,255,255,.035);
}

.keepers-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.keepers-fields { display: grid; gap: 12px; }
.keeper-row { display: grid; grid-template-columns: 1.5fr .8fr .8fr; gap: 8px; }

.hero-card {
  padding: 22px;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
}

.score-ring {
  min-width: 82px;
  height: 82px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  border: 2px solid rgba(32,224,108,.55);
  background: rgba(32,224,108,.10);
}

.score-ring span { font-size: 28px; font-weight: 950; line-height: 1; }
.score-ring small { display: block; color: var(--muted); font-size: 11px; margin-top: -20px; }

.filters {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 16px 0 4px;
  scrollbar-width: none;
}
.filters::-webkit-scrollbar { display: none; }

.filter-btn, .pill {
  white-space: nowrap;
  font-size: 12px;
  padding: 8px 11px;
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255,255,255,.06);
  border: 1px solid var(--line);
}

.filter-btn.active {
  color: #001b0a;
  background: var(--green);
  border-color: var(--green);
  font-weight: 900;
}

.section-header {
  margin: 20px 0 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.exercise-list { display: grid; gap: 12px; }

.exercise-card {
  width: 100%;
  color: var(--text);
  text-align: left;
  padding: 18px;
  transition: transform .15s ease, border-color .15s ease, background .15s ease;
}

.exercise-card:hover {
  transform: translateY(-2px);
  border-color: rgba(32,224,108,.5);
  background: rgba(12,28,18,.94);
}

.exercise-meta {
  margin-top: 10px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.source-note {
  margin-top: 10px;
  color: #cdfbd6;
  font-size: 12px;
  opacity: .84;
}

.back-btn {
  color: var(--text);
  background: transparent;
  margin-bottom: 18px;
  padding: 8px 0;
}

.detail-card { padding: 22px; }

.detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 9px;
  margin: 16px 0;
}

.mini-metric {
  padding: 12px;
  border-radius: 16px;
  background: rgba(255,255,255,.055);
  border: 1px solid var(--line);
}

.mini-metric strong { display: block; color: var(--green); margin-bottom: 3px; }
.points { display: grid; gap: 10px; margin: 14px 0 22px; }

.point {
  padding: 12px;
  border-radius: 14px;
  background: rgba(32,224,108,.08);
  color: #d9ffe2;
  border: 1px solid rgba(32,224,108,.12);
}

.detail-block { margin-top: 18px; }
.detail-block h3 { margin-bottom: 8px; }

.primary-btn, .dark-btn, .ghost-btn, .danger-btn, .icon-btn {
  padding: 13px 16px;
  border-radius: 15px;
  font-weight: 900;
}

.primary-btn { color: #001b0a; background: var(--green); }
.dark-btn { color: var(--text); background: #020403; border: 1px solid var(--line); }
.ghost-btn, .icon-btn { color: var(--text); background: rgba(255,255,255,.07); border: 1px solid var(--line); }

.icon-btn {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
}

.danger-btn { color: #fff; background: rgba(239,68,68,.2); border: 1px solid rgba(239,68,68,.35); }
.full { width: 100%; }

.timer-card { text-align: center; padding: 24px; }
.timer {
  font-size: 92px;
  font-weight: 950;
  letter-spacing: -0.08em;
  margin: 16px 0 6px;
  color: var(--green);
  text-shadow: 0 0 40px rgba(32,224,108,.2);
}

.button-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 20px; }
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 11px; margin: 16px 0; }

.stat-btn {
  min-height: 94px;
  border-radius: 22px;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--line);
}

.stat-btn strong { display: block; font-size: 32px; }
.stat-btn span { color: var(--muted); font-size: 12px; }
.stat-btn.green { background: rgba(32,224,108,.12); }
.stat-btn.red { background: rgba(239,68,68,.12); }
.stat-btn.orange { background: rgba(249,115,22,.12); }

.keeper-selector-card { padding: 16px; margin-bottom: 16px; }
.coach-card { display: flex; justify-content: space-between; align-items: center; gap: 14px; padding: 18px; }

.history-list { display: grid; gap: 12px; margin-top: 16px; }
.history-card { padding: 16px; }

.history-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
  flex-wrap: wrap;
}

.bottom-nav {
  position: fixed;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  width: min(calc(100% - 28px), 450px);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  background: rgba(2,4,3,.9);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 8px;
  backdrop-filter: blur(18px);
}

.bottom-nav.hidden { display: none; }

.nav-btn {
  color: var(--muted);
  background: transparent;
  border-radius: 16px;
  padding: 12px 8px;
  font-weight: 900;
}

.nav-btn.active {
  color: #001b0a;
  background: var(--green);
}

@media (max-width: 390px) {
  .keeper-row { grid-template-columns: 1fr; }
  .timer { font-size: 74px; }
  .detail-grid { grid-template-columns: 1fr; }
}