/* 첫 화면: 계산기를 아이콘으로 고르는 화면 (색은 /themes.css 의 테마 변수) */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--desk);
  color: var(--ink);
  font-family: 'IBM Plex Sans KR', 'Apple SD Gothic Neo', 'Malgun Gothic', system-ui, sans-serif;
  line-height: 1.5;
  word-break: keep-all;
}
a { color: inherit; }
.wrap { width: 100%; max-width: 560px; margin: 0 auto; padding: 0 16px; }

.head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 18px 4px 10px; }
.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; font-size: 18px; text-decoration: none; color: var(--ink); }
.nav { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 16px; font-size: 14px; }
.navlink { color: var(--muted); text-decoration: none; }
.navlink:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }

.hero { padding: 34px 8px 0; }
.kicker { margin: 0 0 10px; font-size: 14px; font-weight: 600; color: var(--seal); }
.hero h1 { margin: 0; font-size: 34px; line-height: 1.25; font-weight: 700; letter-spacing: -0.02em; }

.apps { margin: 30px 0 0; padding: 26px 8px 22px; border-radius: 22px; background: var(--paper); box-shadow: 0 1px 0 var(--rule), 0 18px 36px -24px rgba(var(--shadow-rgb), 0.45); }
.apps ul { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); row-gap: 26px; }
.app { display: flex; flex-direction: column; align-items: center; gap: 9px; text-decoration: none; color: var(--ink); border-radius: 22px; padding: 4px 0; }
.app__icon { position: relative; width: 76px; height: 76px; border-radius: 22px; display: grid; place-items: center; background: var(--seal-tint); transition: transform 0.15s ease; }
.app__icon svg { width: 44px; height: 44px; }
.app:hover .app__icon { transform: translateY(-2px); }
.app:focus-visible { outline: 3px solid var(--seal); outline-offset: 4px; }
.app__name { font-size: 14px; font-weight: 700; text-align: center; line-height: 1.3; }
.badge { position: absolute; top: -7px; right: -9px; padding: 2px 7px; border-radius: 999px; font-size: 11px; font-weight: 700; line-height: 1.4; background: var(--seal); color: var(--on-seal); }
/* 인기 콘텐츠: 테마와 상관없이 주황색이라 NEW(테마 색)와 구분된다 */
.badge--hot { background: #ff6b1a; color: #fff; }
.soon { display: flex; flex-direction: column; align-items: center; gap: 9px; color: var(--muted); padding: 4px 0; }
.soon__icon { width: 76px; height: 76px; border-radius: 22px; display: grid; place-items: center; border: 2px dashed var(--bar); }
.soon__icon svg { width: 26px; height: 26px; }
.soon__name { font-size: 13px; font-weight: 500; text-align: center; line-height: 1.3; }

.quick { margin: 18px 0 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 10px; }
.quick a { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 18px; border-radius: 16px; text-decoration: none; background: var(--paper); color: var(--ink); border: 1px solid var(--rule); }
.quick a:hover { border-color: var(--ink); }
.quick a:focus-visible { outline: 3px solid var(--seal); outline-offset: 2px; }
.quick strong { display: block; font-size: 15px; }
.quick span span { display: block; margin-top: 3px; font-size: 13px; color: var(--muted); }
.quick svg { flex: none; width: 20px; height: 20px; }
.quick strong { transition: opacity 0.18s ease; }
.quick strong.is-swapping { opacity: 0; }

.about { margin: 28px 8px 0; font-size: 14px; color: var(--muted); }
.foot { margin-top: auto; padding: 36px 0 26px; font-size: 12px; line-height: 1.6; color: var(--muted); }
.foot ul { margin: 0 0 8px; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 4px 14px; }
.foot a { color: var(--muted); }
.foot p { margin: 0; }

@media (min-width: 720px) {
  .wrap { max-width: 640px; }
  .hero { padding-top: 56px; }
  .hero h1 { font-size: 44px; }
  .apps { padding: 34px 16px 30px; }
  .app__icon, .soon__icon { width: 92px; height: 92px; border-radius: 26px; }
  .app__icon svg { width: 52px; height: 52px; }
  .app__name { font-size: 15px; }
}
/* 계산기가 넷이라 좁은 휴대폰에서는 아이콘을 조금 줄인다 */
@media (max-width: 400px) {
  .app__icon { width: 66px; height: 66px; border-radius: 20px; }
  .app__icon svg { width: 38px; height: 38px; }
  .app__name { font-size: 13px; }
}
@media (prefers-reduced-motion: reduce) { .app__icon { transition: none; } }

/* 공식 SNS 바로가기 (푸터) */
.social { display: flex; gap: 8px; margin: 4px 0 12px; }
.social__btn { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border: 1px solid var(--rule); border-radius: 50%; color: var(--muted); transition: color 0.15s, border-color 0.15s; }
.social__btn:hover { color: var(--ink); border-color: var(--ink); }
.social__btn:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.social__btn svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.social__btn .dot { fill: currentColor; stroke: none; }