:root {
  --bg: #0b1220;
  --panel: #0f172a;
  --panel2: #111c33;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #22c55e;
  --danger: #ef4444;
  --border: rgba(148, 163, 184, 0.18);
  --shadow: rgba(0, 0, 0, 0.35);
  --radius: 14px;
}

* { box-sizing: border-box; }
html, body {
  height: 100%;
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, Helvetica, Arial, sans-serif;
  background: radial-gradient(1200px 800px at 20% 0%, #111c33 0%, var(--bg) 50%, #070b14 100%);
  color: var(--text);
}

#app {
  max-width: 880px;
  margin: 0 auto;
  padding: 18px 14px 28px;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.badge {
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 10px;
  background: rgba(255,255,255,0.02);
}

.nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.btn {
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  font-weight: 650;
  cursor: pointer;
  box-shadow: 0 10px 20px -18px var(--shadow);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:active { transform: translateY(1px); }

.btn.primary {
  background: rgba(34, 197, 94, 0.18);
  border-color: rgba(34, 197, 94, 0.35);
}

.btn.danger {
  background: rgba(239, 68, 68, 0.14);
  border-color: rgba(239, 68, 68, 0.35);
}

.btn.small {
  padding: 8px 10px;
  border-radius: 10px;
  font-weight: 650;
  font-size: 13px;
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 780px) {
  .grid.two {
    grid-template-columns: 1fr 1fr;
  }
}

.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: 0 18px 40px -36px var(--shadow);
}

.card h2 {
  margin: 0 0 10px;
  font-size: 15px;
  letter-spacing: 0.2px;
}

.muted { color: var(--muted); }

.row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 120px;
}

label {
  font-size: 12px;
  color: var(--muted);
}

input, select {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 10px;
  border-radius: 12px;
  outline: none;
}

input::placeholder { color: rgba(148, 163, 184, 0.7); }

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 12px 0;
}

.list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.exercise-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  background: rgba(255,255,255,0.02);
}

.exercise-top {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: start;
}

.exercise-name {
  font-weight: 750;
  letter-spacing: 0.2px;
  margin: 0 0 4px;
}

.exercise-sub {
  font-size: 12px;
  color: var(--muted);
}

.table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}

.table th, .table td {
  border-top: 1px solid var(--border);
  padding: 8px 6px;
  font-size: 13px;
  text-align: left;
}

.table th {
  color: var(--muted);
  font-weight: 700;
}

.pill {
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 10px;
  display: inline-flex;
  gap: 6px;
  align-items: center;
}

.kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
  color: var(--muted);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  background: rgba(15, 23, 42, 0.92);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 14px;
  box-shadow: 0 18px 40px -28px var(--shadow);
  font-size: 13px;
  max-width: 92vw;
}