.usecase-page { overflow: clip; }

.usecase-hero {
  padding-block: clamp(5rem, 10vw, 9rem);
  background:
    radial-gradient(circle at 90% 12%, rgba(216, 244, 251, .9), transparent 25rem),
    radial-gradient(circle at 6% 80%, rgba(229, 222, 250, .72), transparent 24rem),
    #fff;
}

.usecase-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr);
  gap: clamp(2rem, 8vw, 8rem);
  align-items: end;
}

.usecase-hero h1 {
  max-width: 14ch;
  margin-top: 1.25rem;
  font-size: clamp(3.5rem, 7.5vw, 7.3rem);
  line-height: .94;
  letter-spacing: -.06em;
}

.usecase-hero-grid > div:last-child > p {
  max-width: 52ch;
  color: var(--text-muted);
  font-size: clamp(1rem, 1.5vw, 1.18rem);
  line-height: 1.75;
}

.usecase-summary {
  display: grid;
  grid-template-columns: auto 1fr auto 1fr;
  gap: .5rem .75rem;
  align-items: end;
  margin-top: 2rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--border);
}

.usecase-summary strong { font-size: 2rem; line-height: 1; letter-spacing: -.05em; }
.usecase-summary span { max-width: 10ch; color: var(--text-muted); font-size: .68rem; font-weight: 700; line-height: 1.25; text-transform: uppercase; }

.usecase-directory { padding-block: clamp(4rem, 8vw, 7rem); border-top: 1px solid var(--border); background: #faf9fc; }
.usecase-section-heading { display: grid; grid-template-columns: 1fr minmax(280px, .65fr); gap: 2rem; align-items: end; margin-bottom: 2rem; }
.usecase-section-heading h2 { margin-top: .85rem; font-size: clamp(2.5rem, 5vw, 4.5rem); letter-spacing: -.05em; }
.usecase-section-heading > p { max-width: 52ch; justify-self: end; color: var(--text-muted); line-height: 1.7; }

.usecase-browser {
  display: grid;
  grid-template-columns: minmax(250px, 330px) minmax(0, 1fr);
  min-height: 720px;
  overflow: hidden;
  border: 1px solid #d8d6df;
  border-radius: 1.6rem;
  background: #fff;
  box-shadow: 0 22px 65px rgba(23, 19, 51, .08);
}

.usecase-selector { padding: 1rem; border-right: 1px solid #dedce5; background: #f5f3f8; }
.usecase-selector-label { display: flex; justify-content: space-between; padding: .7rem .6rem 1rem; color: var(--text-muted); font-size: .68rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.usecase-selector-label small { font: inherit; letter-spacing: 0; text-transform: none; }
#usecase-tabs { display: grid; gap: .55rem; }

#usecase-tabs button {
  position: relative;
  display: grid;
  grid-template-columns: 2.35rem 1fr auto;
  gap: .75rem;
  align-items: center;
  width: 100%;
  padding: .78rem;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--item-color) 20%, #d8d6df);
  border-radius: 1rem;
  background: color-mix(in srgb, var(--item-color) 8%, #fff);
  color: var(--text);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}

#usecase-tabs button::before { content: ''; position: absolute; inset: 0 auto 0 0; width: 4px; background: var(--item-color); opacity: .45; }
#usecase-tabs button:hover { transform: translateX(2px); border-color: color-mix(in srgb, var(--item-color) 48%, #d8d6df); }
#usecase-tabs button.active { border-color: var(--item-color); background: color-mix(in srgb, var(--item-color) 15%, #fff); }
#usecase-tabs button.active::before { opacity: 1; }
#usecase-tabs button:focus-visible { outline: 3px solid color-mix(in srgb, var(--item-color) 30%, transparent); outline-offset: 2px; }
.selector-mark { display: grid; width: 2.35rem; height: 2.35rem; place-items: center; border-radius: .75rem; background: var(--item-color); color: #fff; font-size: .67rem; font-weight: 800; }
#usecase-tabs button > span:nth-child(2) { min-width: 0; }
#usecase-tabs b, #usecase-tabs small { display: block; }
#usecase-tabs b { overflow: hidden; font-size: .8rem; text-overflow: ellipsis; white-space: nowrap; }
#usecase-tabs small { margin-top: .18rem; color: var(--text-muted); font-size: .62rem; }
#usecase-tabs i { color: var(--item-color); font-size: 1.3rem; font-style: normal; }

.usecase-panel { min-width: 0; padding: clamp(1.5rem, 3vw, 2.6rem); background: color-mix(in srgb, var(--active-color, #7054d1) 4%, #fff); }
.usecase-panel-header { display: grid; grid-template-columns: 3.5rem 1fr auto; gap: 1rem; align-items: center; padding-bottom: 2rem; border-bottom: 1px solid color-mix(in srgb, var(--active-color) 22%, #dedce5); }
.usecase-product-mark { display: grid; width: 3.5rem; height: 3.5rem; place-items: center; border-radius: 1rem; background: var(--active-color); color: #fff; font-size: .85rem; font-weight: 800; }
.usecase-panel-header p { color: var(--active-color); font-size: .64rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.usecase-panel-header h2 { margin: .15rem 0; font-size: clamp(1.8rem, 3vw, 2.8rem); letter-spacing: -.045em; }
.usecase-panel-header span { color: var(--text-muted); font-size: .78rem; }
.usecase-panel-header > a { padding: .7rem .9rem; border-radius: 999px; background: var(--text); color: #fff; font-size: .7rem; font-weight: 800; text-decoration: none; white-space: nowrap; }
.usecase-panel-header > a span { margin-left: .25rem; color: inherit; }

.usecase-scenario-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin-top: 1.3rem; }
.usecase-scenario { position: relative; min-width: 0; border-radius: 1.15rem; perspective: 1200px; cursor: pointer; }
.scenario-card-inner { display: grid; height: 100%; transform-style: preserve-3d; transition: transform .55s cubic-bezier(.2,.75,.25,1); }
.usecase-scenario.flipped .scenario-card-inner { transform: rotateY(180deg); }
.scenario-face { grid-area: 1 / 1; min-width: 0; padding: 1.25rem; overflow: hidden; border: 1px solid color-mix(in srgb, var(--active-color) 17%, #dedce5); border-radius: 1.15rem; background: rgba(255,255,255,.88); backface-visibility: hidden; -webkit-backface-visibility: hidden; }
.scenario-front { display: flex; flex-direction: column; }
.scenario-back { display: flex; min-height: 100%; flex-direction: column; justify-content: center; align-items: flex-start; transform: rotateY(180deg); background: color-mix(in srgb, var(--active-color) 14%, #fff); }
.usecase-scenario:hover .scenario-face { border-color: color-mix(in srgb, var(--active-color) 48%, #dedce5); }
.usecase-scenario:focus-visible { outline: 3px solid color-mix(in srgb, var(--active-color) 32%, transparent); outline-offset: 3px; }
.scenario-number { color: var(--active-color); font-size: .62rem; font-weight: 800; }
.scenario-title { margin: .9rem 0 1.15rem; }
.scenario-title p { color: var(--active-color); font-size: .62rem; font-weight: 800; text-transform: uppercase; }
.scenario-title h3 { margin-top: .3rem; font-size: 1.05rem; line-height: 1.35; }
.usecase-scenario dl { display: grid; gap: .8rem; margin: 0; }
.usecase-scenario dl div { padding-top: .72rem; border-top: 1px solid #eceaf0; }
.usecase-scenario dt { margin-bottom: .25rem; color: var(--text); font-size: .6rem; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }
.usecase-scenario dd { margin: 0; color: var(--text-muted); font-size: .75rem; line-height: 1.55; }
.scenario-flip-hint { display: inline-flex; gap: .35rem; align-items: center; align-self: flex-start; margin-top: auto; padding-top: 1rem; color: var(--active-color); font-size: .62rem; font-weight: 800; }
.scenario-flip-hint i { font-size: .85rem; font-style: normal; transition: transform .25s ease; }
.usecase-scenario:hover .scenario-flip-hint i { transform: rotate(45deg); }
.scenario-comedy-kicker { color: var(--active-color); font-size: .65rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.scenario-back blockquote { max-width: 24ch; margin: 1.2rem 0; color: var(--text); font-size: clamp(1.2rem, 2vw, 1.55rem); font-weight: 700; line-height: 1.45; letter-spacing: -.025em; }
.scenario-back > p { color: var(--text-muted); font-size: .68rem; font-weight: 700; }
.usecase-loading { padding: 4rem; color: var(--text-muted); text-align: center; }
.usecase-error { margin-top: 1rem; padding: 1rem; border: 1px solid #e8b8bf; border-radius: 1rem; background: #fff1f3; color: #7e3341; }

.usecase-cta { padding-block: clamp(4rem, 8vw, 7rem); background: #eef9f4; }
.usecase-cta-inner { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 8vw, 8rem); align-items: end; }
.usecase-cta h2 { margin-top: .9rem; font-size: clamp(2.5rem, 5vw, 4.5rem); line-height: 1; letter-spacing: -.05em; }
.usecase-cta-inner > div:last-child { max-width: 55ch; }
.usecase-cta-inner p { margin-bottom: 1.35rem; color: var(--text-muted); line-height: 1.7; }

@media (max-width: 980px) {
  .usecase-browser { grid-template-columns: 255px minmax(0, 1fr); }
  .usecase-scenario-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .usecase-hero-grid, .usecase-section-heading, .usecase-cta-inner { grid-template-columns: 1fr; }
  .usecase-section-heading > p { justify-self: start; }
  .usecase-browser { display: block; min-height: 0; overflow: visible; border: 0; background: transparent; box-shadow: none; }
  .usecase-selector { overflow: hidden; border: 1px solid #d8d6df; border-radius: 1.2rem; }
  #usecase-tabs { display: flex; gap: .55rem; overflow-x: auto; padding-bottom: .35rem; scroll-snap-type: x mandatory; }
  #usecase-tabs button { flex: 0 0 220px; scroll-snap-align: start; }
  .usecase-panel { margin-top: 1rem; border: 1px solid #d8d6df; border-radius: 1.2rem; }
}

@media (max-width: 540px) {
  .usecase-hero h1 { font-size: clamp(3.15rem, 15vw, 4.5rem); }
  .usecase-summary { grid-template-columns: auto 1fr; }
  .usecase-panel { padding: 1rem; }
  .usecase-panel-header { grid-template-columns: 3rem 1fr; }
  .usecase-product-mark { width: 3rem; height: 3rem; }
  .usecase-panel-header > a { grid-column: 1 / -1; justify-self: start; }
  .scenario-face { padding: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  #usecase-tabs button, .scenario-card-inner, .scenario-flip-hint i { transition: none; }
}