/* ==========================================================================
   GrowLog — Layout
   공개 페이지 헤더 · 푸터 / 서비스 화면 셸(사이드바 ↔ 하단 탭바)
   ========================================================================== */

/* ---------- Logo ---------- */
.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  min-height: 44px;
  font-size: var(--fs-lg);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--c-ink);
}
.logo__mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: var(--c-primary);
  color: var(--c-on-primary);
}
.logo__mark .icon { width: 20px; height: 20px; }

/* ---------- 공개 페이지 헤더 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  background: color-mix(in srgb, var(--c-bg) 86%, transparent);
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  transition: border-color var(--dur-base);
}
.site-header.is-scrolled { border-bottom-color: var(--c-line); }

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  height: 68px;
}

.site-nav { display: none; }
.site-nav ul { display: flex; gap: var(--sp-1); }
.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 var(--sp-3);
  border-radius: var(--radius-pill);
  color: var(--c-ink-2);
  font-weight: 500;
}
.site-nav a:hover { color: var(--c-ink); background: var(--c-surface-2); }

.site-header__actions { display: flex; align-items: center; gap: var(--sp-1); }

@media (min-width: 768px) {
  .site-nav { display: block; }
  .site-header__actions { gap: var(--sp-2); }
}

/* ---------- 공개 페이지 푸터 ---------- */
.site-footer {
  padding: var(--sp-10) 0 var(--sp-12);
  border-top: 1px solid var(--c-line);
  color: var(--c-ink-2);
  font-size: var(--fs-sm);
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
}
.site-footer .logo { font-size: var(--fs-md); }
.site-footer .logo__mark { width: 28px; height: 28px; border-radius: 8px; }

/* ==========================================================================
   서비스 화면 셸
   모바일: 상단 바 + 하단 탭바 / 데스크톱(1024px~): 왼쪽 사이드바
   ========================================================================== */
.app { min-height: 100vh; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  padding: 0 var(--sp-2) 0 var(--gutter);
  border-bottom: 1px solid var(--c-line);
  background: color-mix(in srgb, var(--c-bg) 90%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.topbar__actions { display: flex; align-items: center; }

.sidebar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 100;
  padding-bottom: env(safe-area-inset-bottom);
  border-top: 1px solid var(--c-line);
  background: var(--c-surface);
}
.sidebar__brand,
.sidebar__user { display: none; }

.gnb__list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  height: var(--bottom-nav-h);
}
.gnb__link {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  height: 100%;
  color: var(--c-ink-3);
  font-size: var(--fs-xs);
  font-weight: 600;
  transition: color var(--dur-fast);
}
.gnb__link .icon { width: 22px; height: 22px; }
.gnb__link:hover { color: var(--c-ink); }
.gnb__link[aria-current="page"] { color: var(--c-ink); }
.gnb__link[aria-current="page"]::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  width: 28px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--c-primary);
  transform: translateX(-50%);
}

.main {
  padding: var(--sp-6) var(--gutter) calc(var(--bottom-nav-h) + var(--sp-12) + env(safe-area-inset-bottom));
}
.main__inner { max-width: 1080px; margin-inline: auto; }
.main__inner--narrow { max-width: 760px; }

@media (min-width: 1024px) {
  .app {
    display: grid;
    grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  }
  .topbar { display: none; }

  .sidebar {
    position: sticky;
    top: 0;
    bottom: auto;
    display: flex;
    flex-direction: column;
    height: 100vh;
    padding: var(--sp-5) var(--sp-4);
    border-top: 0;
    border-right: 1px solid var(--c-line);
    background: var(--c-bg);
  }
  .sidebar__brand { display: inline-flex; padding: 0 var(--sp-2); margin-bottom: var(--sp-8); }

  .gnb { flex: 1; }
  .gnb__list { display: grid; grid-template-columns: 1fr; gap: var(--sp-1); height: auto; }
  .gnb__link {
    flex-direction: row;
    justify-content: flex-start;
    gap: var(--sp-3);
    height: 44px;
    padding: 0 var(--sp-3);
    border-radius: var(--radius-sm);
    color: var(--c-ink-2);
    font-size: var(--fs-md);
    font-weight: 500;
  }
  .gnb__link .icon { width: 20px; height: 20px; }
  .gnb__link:hover { background: var(--c-surface-2); }
  .gnb__link[aria-current="page"] { background: var(--c-surface); color: var(--c-ink); font-weight: 700; box-shadow: var(--shadow-sm); }
  .gnb__link[aria-current="page"]::before {
    top: 50%;
    left: 0;
    width: 3px;
    height: 20px;
    border-radius: 0 3px 3px 0;
    transform: translateY(-50%);
  }

  /* 기록하기는 사이드바 맨 위 CTA 로 강조 */
  .gnb__item--write { order: -1; margin-bottom: var(--sp-4); }
  .gnb__item--write .gnb__link {
    justify-content: center;
    background: var(--c-primary);
    color: var(--c-on-primary);
    font-weight: 700;
    border-radius: var(--radius-pill);
  }
  .gnb__item--write .gnb__link:hover { background: var(--c-primary-hover); color: var(--c-on-primary); }
  .gnb__item--write .gnb__link[aria-current="page"] { background: var(--c-primary); box-shadow: inset 0 0 0 2px var(--c-ink); }
  .gnb__item--write .gnb__link[aria-current="page"]::before { display: none; }

  .sidebar__user {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    padding: var(--sp-3) var(--sp-2);
    border-top: 1px solid var(--c-line);
  }
  .sidebar__user-text { flex: 1; min-width: 0; line-height: 1.35; }
  .sidebar__user-name { display: block; font-weight: 700; }
  .sidebar__user-mail {
    display: block;
    overflow: hidden;
    color: var(--c-ink-3);
    font-size: var(--fs-xs);
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .main { padding: var(--sp-10) var(--sp-10) var(--sp-16); }
}

/* ---------- 페이지 제목 영역 ---------- */
.page-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}
.page-head__eyebrow {
  display: block;
  margin-bottom: var(--sp-1);
  color: var(--c-primary-text);
  font-size: var(--fs-sm);
  font-weight: 700;
}
.page-head__title { font-size: var(--fs-2xl); font-weight: 800; }
.page-head__desc { margin-top: var(--sp-1); color: var(--c-ink-2); }
.page-head__actions { display: flex; flex-wrap: wrap; gap: var(--sp-2); }

@media (min-width: 768px) {
  .page-head__title { font-size: 2rem; }
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  min-height: 44px;
  margin-bottom: var(--sp-2);
  margin-left: -6px;
  color: var(--c-ink-2);
  font-size: var(--fs-sm);
  font-weight: 600;
}
.back-link:hover { color: var(--c-ink); }
.back-link .icon { width: 18px; height: 18px; }