:root {
  color-scheme: dark;
  --bg: #090b12;
  --surface: rgba(255,255,255,.07);
  --surface-strong: rgba(255,255,255,.12);
  --card: rgba(17,20,33,.78);
  --card-solid: #111421;
  --text: #f7f7fb;
  --muted: #aab0c4;
  --line: rgba(255,255,255,.12);
  --primary: #9cff5f;
  --primary-2: #38e8ff;
  --danger: #ff6b7a;
  --shadow: 0 24px 70px rgba(0,0,0,.35);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --header-h: 74px;
  --container: 1180px;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Tahoma, Arial, sans-serif;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f5f7fb;
  --surface: rgba(8,12,24,.06);
  --surface-strong: rgba(8,12,24,.1);
  --card: rgba(255,255,255,.86);
  --card-solid: #ffffff;
  --text: #10121f;
  --muted: #606a82;
  --line: rgba(8,12,24,.12);
  --shadow: 0 22px 55px rgba(17,24,39,.13);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  min-height: 100svh;
  margin: 0;
  background:
    radial-gradient(circle at top right, rgba(56,232,255,.18), transparent 34rem),
    radial-gradient(circle at 20% 8%, rgba(156,255,95,.16), transparent 30rem),
    var(--bg);
  color: var(--text);
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .35;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, #000, transparent 74%);
}

button, input, select { font: inherit; }
button { cursor: pointer; }
img { display: block; max-width: 100%; }

.skip-link {
  position: fixed;
  z-index: 9999;
  inset-inline-start: 1rem;
  top: .75rem;
  transform: translateY(-140%);
  border-radius: 999px;
  padding: .65rem 1rem;
  background: var(--primary);
  color: #0d1117;
  font-weight: 800;
  text-decoration: none;
}
.skip-link:focus { transform: translateY(0); }
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  padding: max(.7rem, env(safe-area-inset-top)) clamp(.9rem, 3vw, 2rem) .7rem;
  backdrop-filter: blur(18px);
  background: rgba(9,11,18,.72);
  border-bottom: 1px solid transparent;
}
:root[data-theme="light"] .app-header { background: rgba(245,247,251,.72); }
.app-header[data-elevated="true"] { border-bottom-color: var(--line); box-shadow: 0 8px 30px rgba(0,0,0,.12); }
.brand { display: inline-flex; align-items: center; gap: .7rem; min-width: 0; }
.brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #071017;
  font-weight: 950;
  box-shadow: 0 14px 40px rgba(56,232,255,.22);
}
.brand strong { display: block; letter-spacing: -.02em; }
.brand small { display: block; color: var(--muted); font-size: .78rem; margin-top: .08rem; }
.top-actions { display: flex; align-items: center; gap: .45rem; }

.primary-btn, .secondary-btn, .ghost-btn, .pill-btn, .icon-btn, .text-btn {
  border: 0;
  border-radius: 999px;
  min-height: 44px;
  transition: transform .18s ease, border-color .18s ease, background .18s ease, opacity .18s ease;
}
.primary-btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: .4rem;
  padding: .78rem 1.15rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #071017;
  font-weight: 900;
  box-shadow: 0 16px 42px rgba(56,232,255,.18);
}
.primary-btn.compact { padding-inline: .9rem; }
.secondary-btn {
  padding: .78rem 1.2rem;
  background: var(--text);
  color: var(--bg);
  font-weight: 850;
}
.ghost-btn, .pill-btn, .icon-btn {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--line);
}
.ghost-btn { padding: .74rem 1rem; font-weight: 750; }
.ghost-btn.wide { width: 100%; }
.pill-btn { display: inline-flex; align-items: center; gap: .42rem; padding: .68rem .92rem; font-weight: 750; }
.icon-btn { width: 44px; display: grid; place-items: center; font-size: 1.2rem; }
.text-btn {
  color: var(--muted);
  background: transparent;
  padding: .35rem .45rem;
  min-height: 36px;
  font-weight: 800;
}
.danger { color: var(--danger); }
button:active { transform: scale(.98); }
button:focus-visible, input:focus-visible, select:focus-visible { outline: 3px solid color-mix(in srgb, var(--primary), transparent 50%); outline-offset: 3px; }

main { max-width: var(--container); margin-inline: auto; padding: clamp(1rem, 3vw, 2rem); }
.hero {
  min-height: calc(100svh - var(--header-h) - 1.5rem);
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .72fr);
  align-items: center;
  gap: clamp(1.2rem, 4vw, 4rem);
  padding-block: clamp(1.2rem, 4vw, 4rem);
}
.eyebrow {
  margin: 0 0 .72rem;
  color: var(--primary);
  font-size: .78rem;
  font-weight: 950;
  letter-spacing: .08em;
  text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  margin-bottom: 1rem;
  max-width: 850px;
  font-size: clamp(2.2rem, 8vw, 5.25rem);
  line-height: .98;
  letter-spacing: -.07em;
}
h2 { font-size: clamp(1.6rem, 4vw, 2.6rem); line-height: 1.05; letter-spacing: -.04em; margin-bottom: .35rem; }
h3 { margin: 1.2rem 0 .65rem; }
.hero-text { max-width: 680px; color: var(--muted); font-size: clamp(1rem, 2.2vw, 1.22rem); line-height: 1.9; }
.search-shell {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: .55rem;
  max-width: 720px;
  padding: .45rem;
  margin-top: 1.4rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  box-shadow: var(--shadow);
}
.search-shell input {
  min-width: 0;
  width: 100%;
  border: 0;
  color: var(--text);
  background: transparent;
  padding: .85rem 1rem;
  outline: none;
}
.search-shell input::placeholder { color: color-mix(in srgb, var(--muted), transparent 12%); }
.quick-chips { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1rem; }
.quick-chips button {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  padding: .55rem .8rem;
}
.hero-panel {
  position: relative;
  display: grid;
  gap: .9rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, var(--card), rgba(255,255,255,.035));
  box-shadow: var(--shadow);
  overflow: hidden;
}
.orb {
  position: absolute;
  width: 220px;
  height: 220px;
  inset-inline-end: -70px;
  top: -70px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(156,255,95,.45), transparent 68%);
  filter: blur(2px);
}
.metric-card {
  position: relative;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
  min-height: 110px;
}
.metric-card.primary { min-height: 190px; display: flex; flex-direction: column; justify-content: flex-end; }
.metric-card span { display: block; font-size: clamp(2rem, 8vw, 4.2rem); line-height: .9; font-weight: 950; letter-spacing: -.08em; }
.metric-card p { margin: .7rem 0 0; color: var(--muted); font-weight: 700; }
.metric-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .9rem; }

.controls, .catalog {
  margin-block: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--card);
  box-shadow: var(--shadow);
}
.controls { padding: 1rem; }
.control-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: .75rem; }
.control-row + .control-row { margin-top: .75rem; }
label span { display: block; color: var(--muted); font-size: .82rem; font-weight: 800; margin: 0 0 .38rem; }
select {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 16px;
  color: var(--text);
  background: var(--surface);
  padding: 0 .9rem;
}
.status-row { display: flex; justify-content: space-between; gap: .75rem; align-items: center; margin-top: .85rem; }
.status-row p { margin: 0; color: var(--muted); font-weight: 750; }
.catalog { padding: clamp(1rem, 2.4vw, 1.4rem); }
.section-heading { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .9rem;
}
.exercise-card {
  position: relative;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
  transition: transform .22s ease, background .22s ease, border-color .22s ease;
}
.exercise-card:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--primary), var(--line) 45%); background: var(--surface-strong); }
.card-media {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--surface), rgba(255,255,255,.03));
  overflow: hidden;
}
.card-media img { width: 100%; height: 100%; object-fit: cover; }
.card-body { padding: .9rem; }
.card-body h3 { margin: 0 0 .55rem; font-size: 1rem; line-height: 1.35; letter-spacing: -.02em; }
.chips { display: flex; flex-wrap: wrap; gap: .35rem; }
.chip {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  max-width: 100%;
  border-radius: 999px;
  padding: .25rem .52rem;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--line);
  font-size: .72rem;
  font-weight: 800;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.card-actions { display: grid; grid-template-columns: 1fr auto; gap: .4rem; margin-top: .85rem; }
.card-actions button { min-height: 38px; padding: .45rem .7rem; }
.fav-button[aria-pressed="true"], .pill-btn.active { color: #071017; background: var(--primary); border-color: transparent; }
.load-more-wrap { display: grid; place-items: center; padding-top: 1.1rem; }
.empty-state, .loading-state {
  grid-column: 1/-1;
  min-height: 240px;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--muted);
  border: 1px dashed var(--line);
  border-radius: 24px;
  padding: 2rem;
}
.skeleton {
  min-height: 290px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(110deg, var(--surface) 8%, var(--surface-strong) 18%, var(--surface) 33%);
  background-size: 220% 100%;
  animation: shimmer 1.3s linear infinite;
}
@keyframes shimmer { to { background-position-x: -220%; } }

.exercise-modal {
  width: min(940px, calc(100vw - 1.5rem));
  max-height: min(860px, calc(100svh - 1.5rem));
  border: 1px solid var(--line);
  border-radius: 30px;
  padding: 0;
  color: var(--text);
  background: var(--card-solid);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.exercise-modal::backdrop { background: rgba(0,0,0,.66); backdrop-filter: blur(6px); }
.exercise-modal[open] { display: grid; grid-template-columns: minmax(260px, .92fr) minmax(0, 1fr); }
.close-btn {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: var(--surface);
  font-size: 1.55rem;
  line-height: 1;
  z-index: 4;
}
.exercise-modal > .close-btn { position: absolute; top: .8rem; inset-inline-end: .8rem; }
.modal-media-wrap { background: var(--surface); min-height: 380px; display: grid; place-items: center; }
.modal-media-wrap img { width: 100%; height: 100%; object-fit: contain; }
.modal-content { padding: clamp(1rem, 3vw, 2rem); overflow-y: auto; max-height: min(860px, calc(100svh - 1.5rem)); }
.meta-list { display: flex; flex-wrap: wrap; gap: .45rem; margin: .8rem 0 1rem; }
.steps { padding-inline-start: 1.4rem; color: var(--muted); line-height: 1.8; }
.steps li + li { margin-top: .35rem; }
.modal-actions { display: flex; gap: .55rem; flex-wrap: wrap; margin-top: 1.2rem; }

.sheet {
  position: fixed;
  inset: 0;
  z-index: 80;
  pointer-events: none;
  visibility: hidden;
}
.sheet[aria-hidden="false"] { pointer-events: auto; visibility: visible; }
.sheet-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.55); opacity: 0; transition: opacity .22s ease; }
.sheet[aria-hidden="false"] .sheet-backdrop { opacity: 1; }
.sheet-panel {
  position: absolute;
  inset-block: 0;
  inset-inline-end: 0;
  width: min(440px, 100vw);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: max(1rem, env(safe-area-inset-top)) 1rem max(1rem, env(safe-area-inset-bottom));
  border-inline-start: 1px solid var(--line);
  background: var(--card-solid);
  box-shadow: var(--shadow);
  transform: translateX(-105%);
  transition: transform .24s ease;
}
[dir="rtl"] .sheet-panel { transform: translateX(-105%); }
.sheet[aria-hidden="false"] .sheet-panel { transform: translateX(0); }
.sheet-header { display: flex; align-items: start; justify-content: space-between; gap: 1rem; }
.plan-list { overflow-y: auto; display: grid; gap: .75rem; padding-bottom: .5rem; }
.plan-item {
  padding: .85rem;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
}
.plan-item h3 { margin: 0 0 .4rem; font-size: 1rem; }
.plan-grid { display: grid; grid-template-columns: repeat(3, 1fr) auto; gap: .4rem; align-items: end; }
.plan-grid input {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--text);
  background: var(--surface);
  padding: 0 .55rem;
}
.plan-grid label span { font-size: .7rem; margin-bottom: .25rem; }
.remove-plan { min-height: 40px; border-radius: 12px; border: 1px solid var(--line); background: transparent; color: var(--danger); }
.sheet-actions { margin-top: auto; display: grid; grid-template-columns: 1fr auto; gap: .65rem; }
.toast {
  position: fixed;
  z-index: 100;
  inset-inline: 1rem;
  bottom: calc(1rem + env(safe-area-inset-bottom));
  max-width: 520px;
  margin-inline: auto;
  padding: .8rem 1rem;
  border-radius: 18px;
  background: var(--text);
  color: var(--bg);
  box-shadow: var(--shadow);
  font-weight: 850;
  transform: translateY(140%);
  opacity: 0;
  transition: transform .25s ease, opacity .25s ease;
}
.toast.show { transform: translateY(0); opacity: 1; }

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-panel { max-width: 680px; }
  .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 720px) {
  :root { --header-h: 66px; }
  .app-header { gap: .5rem; }
  .brand small { display: none; }
  .brand-mark { width: 40px; height: 40px; border-radius: 14px; }
  .top-actions .pill-btn span:not([aria-hidden]), .top-actions .primary-btn span:not([aria-hidden]) { display: none; }
  .top-actions .pill-btn, .top-actions .primary-btn { padding-inline: .7rem; }
  main { padding-inline: .85rem; }
  h1 { font-size: clamp(2.15rem, 13vw, 3.8rem); }
  .search-shell { grid-template-columns: 1fr; border-radius: 24px; }
  .search-shell .primary-btn { width: 100%; }
  .control-row { grid-template-columns: 1fr; }
  .section-heading { align-items: stretch; flex-direction: column; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .75rem; }
  .exercise-card { border-radius: 20px; }
  .card-body { padding: .75rem; }
  .card-actions { grid-template-columns: 1fr; }
  .card-actions .fav-button { position: absolute; top: .5rem; inset-inline-end: .5rem; width: 42px; min-height: 42px; padding: 0; backdrop-filter: blur(10px); }
  .exercise-modal[open] { grid-template-columns: 1fr; }
  .exercise-modal { width: 100vw; max-height: 100svh; border-radius: 24px 24px 0 0; margin-bottom: 0; }
  .modal-media-wrap { min-height: 260px; max-height: 42svh; }
  .modal-content { max-height: 58svh; padding-bottom: calc(1.4rem + env(safe-area-inset-bottom)); }
  .sheet-panel { width: 100vw; border-radius: 28px 28px 0 0; inset-block-start: auto; max-height: 88svh; border-inline-start: 0; border-top: 1px solid var(--line); transform: translateY(105%); }
  [dir="rtl"] .sheet-panel { transform: translateY(105%); }
  .sheet[aria-hidden="false"] .sheet-panel { transform: translateY(0); }
}
@media (max-width: 420px) {
  .grid { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: 1fr; }
  .status-row { align-items: flex-start; flex-direction: column; }
  .plan-grid { grid-template-columns: repeat(3, 1fr); }
  .remove-plan { grid-column: 1/-1; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .01ms !important; }
}