:root {
  --ink: #302b49;
  --muted: #716b89;
  --violet: #7565cf;
  --violet-deep: #5c4bb6;
  --line: #ded7f3;
  --surface: #fff;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 12%, #dff3ff 0, transparent 26rem),
    radial-gradient(circle at 92% 4%, #ffe3ef 0, transparent 28rem),
    linear-gradient(150deg, #fffcf6, #f3f0ff 52%, #effaff);
  font:
    400 16px/1.8 Poppins,
    "Noto Sans JP",
    sans-serif;
}

button,
select {
  font: inherit;
}
button,
select,
a {
  touch-action: manipulation;
}

:focus-visible {
  outline: 3px solid #ff8279;
  outline-offset: 4px;
}

.page-shell {
  width: min(100% - 2rem, 1060px);
  margin: 0 auto;
  padding: clamp(2rem, 7vw, 5rem) 0 3rem;
}
.hero {
  max-width: 760px;
  margin: 0 auto 2rem;
  text-align: center;
}
.eyebrow,
.step {
  margin: 0;
  color: var(--violet);
  font-size: 0.73rem;
  font-weight: 800;
  letter-spacing: 0.13em;
}
h1,
h2 {
  letter-spacing: -0.045em;
}
h1 {
  margin: 0.25rem 0 0.7rem;
  font-size: clamp(2.85rem, 8vw, 5.4rem);
  font-weight: 900;
  line-height: 1.05;
}
h1 span {
  color: var(--violet);
}
.lead {
  margin: 0;
  color: var(--muted);
  font-size: clamp(0.96rem, 2.2vw, 1.1rem);
}

.app {
  padding: clamp(1rem, 4vw, 2.3rem);
  border: 1px solid #fff;
  border-radius: 30px;
  background: #ffffffb8;
  box-shadow:
    inset 1px 1px 0 #fff,
    0 22px 55px #50448818;
  backdrop-filter: blur(14px);
}
.app-intro {
  max-width: 680px;
}
.app-intro h2 {
  margin: 0.25rem 0 0.4rem;
  font-size: clamp(1.65rem, 4vw, 2.45rem);
  font-weight: 900;
}
.app-intro p:not(.step) {
  margin: 0;
  color: var(--muted);
}
.app-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: 1rem;
  margin-top: 1.5rem;
}
.panel {
  min-width: 0;
  padding: clamp(1rem, 3vw, 1.45rem);
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
  box-shadow: 0 10px 30px #5141840d;
}
.request-panel {
  align-self: stretch;
}
label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 800;
}
select {
  width: 100%;
  padding: 0.82rem 0.9rem;
  border: 1px solid #cfc6eb;
  border-radius: 12px;
  color: var(--ink);
  background: #fbfaff;
}
.endpoint {
  margin: 1rem 0 0.75rem;
  overflow-wrap: anywhere;
  color: #5a5176;
  font-size: 0.83rem;
}
.endpoint b {
  margin-right: 0.25rem;
  color: #397ce5;
}
code {
  padding: 0.15rem 0.4rem;
  border-radius: 6px;
  background: #f1edff;
  font-family: ui-monospace, Consolas, monospace;
}
button {
  width: 100%;
  padding: 0.86rem 1rem;
  border: 1px solid #6c5ac9;
  border-radius: 13px;
  color: #fff;
  background: linear-gradient(135deg, #8d7be3, #6654c8);
  box-shadow:
    inset 1px 1px #b7abf2,
    0 5px 0 #d5cbf2;
  font-weight: 800;
  cursor: pointer;
  transition:
    transform 0.18s ease,
    filter 0.18s ease;
}
button:not(:disabled):hover {
  filter: brightness(1.05);
  transform: translateY(-2px);
}
button:disabled {
  cursor: wait;
  opacity: 0.52;
}
.status {
  min-height: 3em;
  margin: 0.8rem 0 0.3rem;
  color: #625a78;
  font-size: 0.84rem;
}
small {
  color: var(--muted);
  font-size: 0.72rem;
}

.result-panel {
  text-align: center;
  background: linear-gradient(150deg, #fffafa, #f5f1ff);
}
.result-head {
  display: flex;
  justify-content: space-between;
  gap: 0.7rem;
  align-items: center;
  text-align: left;
  color: #7a689d;
  font-size: 0.7rem;
  font-weight: 800;
}
.image-stage {
  display: grid;
  place-items: center;
  width: min(100%, 285px);
  aspect-ratio: 1;
  margin: 0.25rem auto;
  border-radius: 50%;
  background: radial-gradient(circle, #ffe6f0 0, #e7e2ff 57%, transparent 59%);
}
.image-stage img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transform-origin: center bottom;
}
#fortune-image.is-arriving {
  animation: fortune-arrival 620ms cubic-bezier(0.22, 0.9, 0.32, 1.18) both;
}
@keyframes fortune-arrival {
  0% {
    opacity: 0;
    transform: scale(0.35);
  }
  46% {
    opacity: 1;
    transform: scale(1.14);
  }
  67% {
    transform: scale(0.94);
  }
  84% {
    transform: scale(1.035);
  }
  100% {
    transform: scale(1);
  }
}
.result-panel h2 {
  margin: 0.1rem 0 0.35rem;
  font-size: 1.2rem;
  font-weight: 900;
}
.result-panel p {
  min-height: 3.8em;
  margin: 0 auto 0.45rem;
  color: #5f5875;
}
.result-panel small {
  display: block;
  letter-spacing: 0.08em;
}

.json-details {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}
summary {
  color: var(--violet-deep);
  font-weight: 800;
  cursor: pointer;
}
pre {
  max-height: 270px;
  margin: 0.8rem 0;
  padding: 1rem;
  overflow: auto;
  border-radius: 14px;
  color: #eaf2ff;
  background: #293653;
  font:
    13px/1.8 ui-monospace,
    Consolas,
    monospace;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.json-details a {
  color: var(--violet-deep);
  font-size: 0.86rem;
  font-weight: 800;
}
.note {
  max-width: 720px;
  margin: 1.4rem auto 0;
  color: #706986;
  text-align: center;
  font-size: 0.78rem;
}

#fortune-delivery {
  width: min(560px, calc(100% - 30px));
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: 26px;
  background: transparent;
  box-shadow: 0 24px 65px #10264d66;
}
#fortune-delivery::backdrop {
  background: #152a4d91;
  backdrop-filter: blur(4px);
}
.delivery-content {
  padding: 1rem 1rem 0.9rem;
  border: 1px solid #ffffffaa;
  border-radius: 26px;
  background: linear-gradient(145deg, #f8fbff, #e9f2ff);
  text-align: center;
}
.delivery-content img {
  display: block;
  width: min(100%, 470px);
  height: auto;
  margin: auto;
}
.delivery-content p {
  margin: -0.45rem 0 0;
  color: #305d9d;
  font-weight: 800;
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100% - 1.25rem, 620px);
    padding-top: 1.35rem;
  }
  .app {
    border-radius: 22px;
  }
  .app-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .request-panel {
    order: 1;
  }
  .result-panel {
    order: 2;
  }
  .image-stage {
    width: min(100%, 240px);
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
  #fortune-image.is-arriving {
    animation: none;
  }
}