.app-shell { min-height: 100vh; min-height: 100dvh; padding-bottom: calc(var(--nav-height) + env(safe-area-inset-bottom)); }
.app-main { width: min(100%, var(--content)); margin: 0 auto; padding: max(var(--space-5), env(safe-area-inset-top)) var(--space-4) var(--space-10); }
.page-header { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); margin-bottom: var(--space-6); }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 900; letter-spacing: -0.03em; }
.brand__mark { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 12px; background: var(--accent); color: var(--accent-ink); font-size: 0.83rem; }
.page-title { margin: 0; font-size: 1.05rem; }
.page-section { display: grid; gap: var(--space-4); margin-bottom: var(--space-8); }
.page-section__header { display: flex; align-items: end; justify-content: space-between; gap: var(--space-3); }
.page-section__header h2, .page-section__header p { margin-bottom: 0; }

.bottom-nav { position: fixed; z-index: 30; right: 0; bottom: 0; left: 0; height: calc(var(--nav-height) + env(safe-area-inset-bottom)); display: grid; grid-template-columns: repeat(4, 1fr); padding: 6px 8px env(safe-area-inset-bottom); border-top: 1px solid var(--line); background: color-mix(in srgb, var(--surface) 93%, transparent); backdrop-filter: blur(18px); }
.nav-item { min-width: 0; display: grid; place-items: center; align-content: center; gap: 2px; border: 0; border-radius: 14px; background: transparent; color: var(--text-muted); font-size: 0.72rem; font-weight: 800; cursor: pointer; }
.nav-item__icon { font-size: 1.2rem; line-height: 1; }
.nav-item[aria-current="page"] { background: color-mix(in srgb, var(--accent) 12%, transparent); color: var(--accent); }

.desktop-rail { display: none; }
.workout-layout { display: grid; gap: var(--space-4); }
.workout-kicker { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.workout-actions { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: var(--space-2); }
.workout-actions .button { min-width: 0; padding: 0 10px; font-size: 0.82rem; }
.load-card { display: grid; gap: var(--space-4); }
.load-summary strong { display: block; font-size: clamp(1.45rem, 7vw, 2rem); line-height: 1.1; letter-spacing: -0.04em; }
.load-summary span { color: var(--text-muted); }
.sticky-action { position: sticky; z-index: 20; bottom: calc(var(--nav-height) + env(safe-area-inset-bottom) + var(--space-3)); display: grid; gap: var(--space-2); margin-top: var(--space-4); padding: var(--space-2); border: 1px solid var(--line); border-radius: 999px; background: color-mix(in srgb, var(--surface) 90%, transparent); box-shadow: var(--shadow); backdrop-filter: blur(16px); }
.sticky-action .button { min-height: 56px; }
.concentration .bottom-nav, .concentration .desktop-rail { display: none; }
.concentration.app-shell { padding-bottom: env(safe-area-inset-bottom); }
.concentration .app-main { padding-bottom: var(--space-4); }
.concentration .sticky-action { bottom: calc(var(--space-2) + env(safe-area-inset-bottom)); }

.history-row { display: grid; grid-template-columns: auto minmax(0,1fr) auto; align-items: center; gap: var(--space-3); padding: var(--space-4) 0; border-bottom: 1px solid var(--line); }
.history-row:last-child { border-bottom: 0; }
.history-date { width: 48px; text-align: center; }
.history-date strong { display: block; font-size: 1.25rem; }
.history-date span { color: var(--text-muted); font-size: 0.72rem; text-transform: uppercase; }
.history-copy { min-width: 0; }
.history-copy strong, .history-copy span { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.history-copy span { color: var(--text-muted); font-size: 0.82rem; }

.summary-hero { padding: var(--space-8) var(--space-5); text-align: center; }
.summary-hero__icon { width: 72px; height: 72px; display: grid; place-items: center; margin: 0 auto var(--space-4); border-radius: 50%; background: var(--accent); color: var(--accent-ink); font-size: 2rem; }

@media (min-width: 720px) {
  .app-shell { padding: 0 0 0 102px; }
  .app-main { padding-right: var(--space-8); padding-left: var(--space-8); }
  .bottom-nav { display: none; }
  .desktop-rail { position: fixed; z-index: 30; inset: 0 auto 0 0; width: 102px; display: flex; flex-direction: column; align-items: center; gap: var(--space-2); padding: var(--space-5) 10px; border-right: 1px solid var(--line); background: color-mix(in srgb, var(--surface) 94%, transparent); backdrop-filter: blur(18px); }
  .desktop-rail .brand__mark { margin-bottom: var(--space-5); }
  .desktop-rail .nav-item { width: 78px; min-height: 68px; }
  .desktop-rail__spacer { flex: 1; }
  .sheet-backdrop { align-items: center; justify-items: center; padding: var(--space-6); }
  .sheet { width: min(620px, 100%); border-bottom: 1px solid var(--line); border-radius: 28px; }
  .sticky-action { bottom: var(--space-4); }
  .workout-layout { grid-template-columns: 1.05fr 0.95fr; align-items: start; }
  .workout-layout__wide { grid-column: 1 / -1; }
}

@media (max-width: 359px) {
  .app-main { padding-right: var(--space-3); padding-left: var(--space-3); }
  .card { padding: var(--space-4); }
  .workout-actions { grid-template-columns: 1fr; }
  .sheet__body { padding-right: var(--space-4); padding-left: var(--space-4); }
  .choice-grid { grid-template-columns: 1fr; }
}