:root {
  color-scheme: light;
  --ink: #18211d;
  --muted: #66706b;
  --paper: #f4f2ec;
  --card: #fffefa;
  --line: #deded5;
  --accent: #176b4a;
  --accent-dark: #0c4a32;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--paper);
}

button,
input,
select {
  font: inherit;
}

.site-hero {
  padding: clamp(3rem, 8vw, 7rem) max(1.25rem, calc((100vw - 1180px) / 2));
  color: #fff;
  background:
    radial-gradient(circle at 85% 15%, rgb(151 218 161 / 35%), transparent 27rem),
    linear-gradient(135deg, #10271e, #164f38);
}

.eyebrow,
.card-meta {
  margin: 0 0 0.65rem;
  color: #9cd5aa;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

h1 {
  max-width: 850px;
  margin: 0;
  font-size: clamp(2.8rem, 8vw, 6.6rem);
  line-height: 0.94;
  letter-spacing: -0.06em;
}

.intro {
  max-width: 620px;
  margin: 1.3rem 0 2.25rem;
  color: #d7e6dc;
  font-size: clamp(1rem, 2vw, 1.25rem);
}

.controls {
  display: flex;
  gap: 0.75rem;
  max-width: 760px;
}

.search,
.filter {
  display: flex;
  align-items: center;
  min-height: 3.5rem;
  border: 1px solid rgb(255 255 255 / 25%);
  border-radius: 999px;
  background: rgb(255 255 255 / 12%);
  backdrop-filter: blur(12px);
}

.search {
  flex: 1;
  padding: 0 1.1rem;
}

.search svg {
  width: 1.3rem;
  margin-right: 0.65rem;
  fill: none;
  stroke: #fff;
  stroke-linecap: round;
  stroke-width: 2;
}

.search input,
.filter select {
  width: 100%;
  border: 0;
  outline: 0;
  color: #fff;
  background: transparent;
}

.search input::placeholder {
  color: #d7e6dc;
}

.filter {
  padding: 0 1.1rem;
}

.filter select option {
  color: var(--ink);
}

main {
  width: min(1180px, calc(100% - 2.5rem));
  margin: 0 auto;
  padding: 2rem 0 5rem;
}

.result-bar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.result-bar p {
  margin: 0;
}

#result-count {
  color: var(--ink);
  font-weight: 750;
}

.exercise-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.exercise-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  background: var(--card);
  box-shadow: 0 8px 25px rgb(26 40 32 / 5%);
}

.card-button {
  width: 100%;
  padding: 0;
  border: 0;
  color: inherit;
  text-align: left;
  background: none;
  cursor: pointer;
}

.card-button:focus-visible,
.load-more:focus-visible,
.close-dialog:focus-visible {
  outline: 3px solid #75c791;
  outline-offset: 3px;
}

.gif-frame {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #ecece7;
}

.gif-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 250ms ease;
}

.card-button:hover .gif-frame img {
  transform: scale(1.025);
}

.card-copy {
  padding: 1rem 1rem 1.15rem;
}

.card-meta {
  color: var(--accent);
}

.card-copy h2 {
  margin: 0;
  font-size: 1.2rem;
  line-height: 1.2;
  text-transform: capitalize;
}

.card-target {
  margin: 0.6rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.load-more {
  display: block;
  margin: 2rem auto 0;
  padding: 0.9rem 1.35rem;
  border: 0;
  border-radius: 999px;
  color: #fff;
  font-weight: 750;
  background: var(--accent);
  cursor: pointer;
}

.load-more:hover {
  background: var(--accent-dark);
}

.empty-state {
  padding: 4rem 1rem;
  color: var(--muted);
  text-align: center;
}

footer {
  width: min(1180px, calc(100% - 2.5rem));
  margin: -2rem auto 3rem;
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
}

footer a {
  color: var(--accent-dark);
  font-weight: 700;
}

dialog {
  width: min(900px, calc(100% - 2rem));
  max-height: calc(100dvh - 2rem);
  padding: 0;
  overflow: auto;
  border: 0;
  border-radius: 1.5rem;
  color: var(--ink);
  background: var(--card);
  box-shadow: 0 30px 80px rgb(0 0 0 / 35%);
}

dialog::backdrop {
  background: rgb(5 18 12 / 75%);
  backdrop-filter: blur(5px);
}

.close-dialog {
  position: sticky;
  z-index: 1;
  top: 1rem;
  float: right;
  width: 2.7rem;
  height: 2.7rem;
  margin: 1rem 1rem -3.7rem 0;
  border: 0;
  border-radius: 50%;
  color: #fff;
  font-size: 1.8rem;
  line-height: 1;
  background: rgb(11 30 21 / 80%);
  cursor: pointer;
}

.dialog-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
}

.dialog-gif {
  position: sticky;
  top: 0;
  width: 100%;
  height: min(100dvh - 2rem, 700px);
  object-fit: cover;
  background: #ecece7;
}

.dialog-copy {
  padding: clamp(2rem, 5vw, 3.5rem);
}

.dialog-copy h2 {
  margin: 0 0 0.85rem;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1;
  letter-spacing: -0.045em;
  text-transform: capitalize;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 1.25rem 0 2rem;
}

.chip {
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  color: var(--accent-dark);
  font-size: 0.78rem;
  font-weight: 700;
  background: #dcefe2;
}

.dialog-copy h3 {
  margin: 0 0 0.8rem;
  font-size: 1rem;
}

.instructions {
  margin: 0;
  padding-left: 1.25rem;
  color: #3f4944;
}

.instructions li + li {
  margin-top: 0.7rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

[hidden] {
  display: none !important;
}

@media (max-width: 820px) {
  .exercise-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .dialog-layout {
    display: block;
  }

  .dialog-gif {
    position: static;
    height: auto;
    max-height: 55dvh;
  }
}

@media (max-width: 560px) {
  .controls,
  .result-bar {
    flex-direction: column;
  }

  .filter {
    width: 100%;
  }

  .exercise-grid {
    grid-template-columns: 1fr;
  }

  .result-bar p:last-child {
    display: none;
  }
}