.app-shell {
  min-height: 100vh;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
}

.app-main {
  flex: 1;
  min-width: 0;
  max-width: 430px;
  width: 100%;
  margin: 0 auto;
}

.tabbar {
  display: flex;
  align-items: center;
  padding: 9px 8px 14px;
  border-top: 1px solid var(--color-divider);
  background: var(--color-bg);
}

.tabbar-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 4px 0;
  background: none;
  border: 0;
  cursor: pointer;
  font: inherit;
  font-size: 10.5px;
  color: var(--color-neutral-600);
}

.tabbar-btn.active {
  color: var(--color-accent);
}

.tabbar-brand {
  display: none;
}

.sheet-backdrop {
  position: fixed;
  inset: 0;
  z-index: 8;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  background: color-mix(in srgb, var(--color-neutral-900) 45%, transparent);
}

.sheet {
  width: 100%;
  max-width: 430px;
  padding: 22px 20px 26px;
  border-radius: 32px 32px 0 0;
  background: var(--color-bg);
  box-shadow: var(--shadow-lg);
  animation: hondiSheet 0.24s ease;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.sheet-grip {
  width: 46px;
  height: 4px;
  border-radius: 999px;
  background: var(--color-neutral-400);
  margin: 0 auto;
}

.toast {
  position: fixed;
  left: 20px;
  right: 20px;
  bottom: 22px;
  z-index: 9;
  max-width: 390px;
  margin: 0 auto;
  padding: 13px 17px;
  border-radius: 22px;
  background: var(--color-neutral-900);
  color: var(--color-neutral-100);
  font-size: 13px;
  line-height: 1.45;
  box-shadow: var(--shadow-lg);
  animation: hondiToast 0.2s ease;
}

.avatar {
  flex: none;
  border-radius: 50%;
  color: var(--color-bg);
  display: grid;
  place-items: center;
  font-family: var(--font-heading);
}

.avatar img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

/* 카카오 로그인 버튼 (카카오 디자인 가이드 색상) */
.btn-kakao {
  background: #fee500;
  color: rgba(0, 0, 0, 0.85);
}

.btn-kakao:hover {
  background: #f4dc00;
}

.badge {
  flex: none;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: 999px;
  display: inline-grid;
  place-items: center;
  background: var(--color-accent);
  color: var(--color-bg);
  font-size: 11px;
  font-weight: 700;
}

select.input {
  appearance: none;
  padding-right: 36px;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23645c50' stroke-width='2.75' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
}

/* 화면별 레이아웃 (모바일 기본값) */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.home-layout {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.map-view {
  height: 352px;
}

.map-panel {
  margin-top: -26px;
  border-radius: 30px 30px 0 0;
}

.map-grip {
  margin-bottom: 4px;
}

/* 온보딩 */
.onboarding {
  position: relative;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  padding: 40px 26px 0;
  overflow: hidden;
}

.onboarding-sun,
.onboarding-moon {
  position: absolute;
  border-radius: 50%;
}

.onboarding-sun {
  top: 24px;
  right: -34px;
  width: 124px;
  height: 124px;
  background: var(--color-accent-300);
}

.onboarding-moon {
  top: 122px;
  right: 62px;
  width: 34px;
  height: 34px;
  background: var(--color-accent-2-300);
}

.onboarding-title {
  font-size: 54px;
}

.onboarding-lead {
  font-size: 17px;
}

.onboarding-steps {
  margin-top: 38px;
}

.onboarding-cta {
  margin-top: auto;
  padding: 40px 0 26px;
}

.onboarding-hills {
  position: absolute;
  left: -60px;
  right: -60px;
  bottom: 0;
  height: 250px;
  pointer-events: none;
}

.hill {
  position: absolute;
  bottom: 0;
  border-radius: 50% 50% 0 0 / 100% 100% 0 0;
}

.hill-1 {
  left: 8%;
  width: 300px;
  height: 190px;
  background: var(--color-accent-2-200);
}

.hill-2 {
  right: 2%;
  width: 260px;
  height: 132px;
  background: var(--color-accent-2-300);
}

.hill-3 {
  left: -4%;
  width: 210px;
  height: 92px;
  background: var(--color-accent-200);
}

/* 태블릿 */
@media (min-width: 768px) {
  .app-main {
    max-width: 760px;
  }

  .app-main[data-screen='onboarding'] {
    max-width: none;
  }

  .onboarding {
    min-height: 100vh;
    padding: 64px max(48px, calc((100% - 480px) / 2)) 0;
  }

  .onboarding-sun {
    top: 40px;
    right: 6%;
    width: 200px;
    height: 200px;
  }

  .onboarding-moon {
    top: 200px;
    right: calc(6% + 180px);
    width: 52px;
    height: 52px;
  }

  .onboarding-title {
    font-size: 72px;
  }

  .onboarding-hills {
    left: 0;
    right: 0;
    height: 32vh;
  }

  .hill-1 {
    left: 14%;
    width: 46%;
    height: 90%;
  }

  .hill-2 {
    right: -4%;
    width: 44%;
    height: 64%;
  }

  .hill-3 {
    left: -6%;
    width: 34%;
    height: 44%;
  }

  .app-main[data-screen='compose'],
  .app-main[data-screen='review'],
  .app-main[data-screen='chat'] {
    max-width: 640px;
  }

  .app-main[data-screen='map'] {
    max-width: none;
  }

  .tabbar {
    justify-content: center;
  }

  .tabbar-btn {
    max-width: 112px;
  }

  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }

  .map-view {
    height: 50vh;
  }

  .map-panel {
    width: 100%;
    max-width: 760px;
    margin-inline: auto;
  }

  .sheet-backdrop {
    align-items: center;
    padding: 24px;
  }

  .sheet {
    max-width: 460px;
    border-radius: 32px;
  }

  .sheet .sheet-grip {
    display: none;
  }
}

/* 데스크톱: 하단 탭바 → 왼쪽 사이드바 */
@media (min-width: 1024px) {
  .app-shell {
    flex-direction: row;
  }

  .app-main {
    max-width: 1120px;
    padding-top: 12px;
  }

  .app-main[data-screen='profile'] {
    max-width: 860px;
  }

  .app-main[data-screen='onboarding'] {
    padding-top: 0;
  }

  .onboarding {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 420px);
    grid-template-rows: 1fr auto auto 1fr;
    grid-template-areas:
      'hero .'
      'hero steps'
      'hero cta'
      'hero .';
    align-items: center;
    column-gap: 8vw;
    padding: 48px max(64px, calc((100% - 1120px) / 2)) 36vh;
  }

  .onboarding-hero { grid-area: hero; }
  .onboarding-steps { grid-area: steps; margin-top: 0; }
  .onboarding-cta { grid-area: cta; margin-top: 0; padding: 36px 0 0; }

  .onboarding-title {
    font-size: clamp(88px, 8vw, 128px);
  }

  .onboarding-lead {
    font-size: 22px;
    max-width: none !important;
  }

  .onboarding-sun {
    --sun: clamp(220px, 22vw, 340px);
    top: -80px;
    right: -80px;
    width: var(--sun);
    height: var(--sun);
  }

  .onboarding-moon {
    top: calc(clamp(220px, 22vw, 340px) - 90px);
    right: calc(clamp(220px, 22vw, 340px) - 60px);
    width: 52px;
    height: 52px;
  }

  .onboarding-hills {
    height: 34vh;
  }

  .app-main[data-screen='map'] {
    padding-top: 0;
  }

  .tabbar {
    order: -1;
    position: sticky;
    top: 0;
    flex: none;
    width: 212px;
    height: 100vh;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 4px;
    padding: 28px 14px;
    border-top: 0;
    border-right: 1px solid var(--color-divider);
  }

  .tabbar-brand {
    display: block;
    padding: 0 14px 22px;
    font-family: var(--font-heading);
    font-size: 24px;
    color: var(--color-accent);
  }

  .tabbar-btn {
    flex: none;
    max-width: none;
    flex-direction: row;
    gap: 12px;
    padding: 11px 14px;
    border-radius: 999px;
    font-size: 14px;
  }

  .tabbar-btn:hover {
    background: color-mix(in srgb, var(--color-text) 7%, transparent);
  }

  .tabbar-btn.active {
    background: var(--color-accent-100);
    font-weight: 600;
  }

  .home-layout {
    display: grid;
    grid-template-columns: minmax(300px, 380px) 1fr;
    grid-template-areas:
      'head head'
      'route list'
      'notice list';
    grid-template-rows: auto auto 1fr;
    align-items: start;
    column-gap: 28px;
  }

  .home-head { grid-area: head; }
  .home-route { grid-area: route; }
  .home-notice { grid-area: notice; }
  .home-list { grid-area: list; }
  .home-divider { display: none; }

  .map-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    height: 100vh;
  }

  .map-view {
    height: 100%;
  }

  .map-panel {
    max-width: none;
    margin: 0;
    border-radius: 0;
    border-left: 1px solid var(--color-divider);
    overflow-y: auto;
  }

  .map-grip {
    display: none;
  }
}