*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", sans-serif;
  color: #1e293b;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(59, 130, 246, 0.12), transparent),
    #f8fafc;
}

.page {
  max-width: 920px;
  margin: 0 auto;
  padding: 2rem 1.25rem 2.5rem;
}

.topbar {
  margin-bottom: 1.5rem;
}

.topbar__brand {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9375rem;
}

.topbar__home {
  color: #2563eb;
  font-weight: 700;
  text-decoration: none;
}

.topbar__home:hover,
.topbar__home:focus-visible {
  text-decoration: underline;
}

.topbar__sep {
  color: #94a3b8;
}

.topbar__title {
  font-weight: 700;
  color: #0f172a;
}

.topbar__lead {
  margin: 0.5rem 0 0;
  color: #475569;
  line-height: 1.6;
}

.notice {
  margin-bottom: 1rem;
  padding: 0.875rem 1rem;
  border-radius: 12px;
  border: 1px solid #bfdbfe;
  background: #eff6ff;
  color: #1e3a8a;
  line-height: 1.6;
  font-size: 0.9375rem;
}

.notice strong {
  display: block;
  margin-bottom: 0.25rem;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 1rem;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: end;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 8rem;
}

.field span {
  font-size: 0.75rem;
  font-weight: 700;
  color: #64748b;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.625rem 0.75rem;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  background: #fff;
  color: #0f172a;
  font: inherit;
}

.field textarea {
  resize: vertical;
  min-height: 6rem;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 2px solid #93c5fd;
  border-color: #60a5fa;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.5rem;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font: inherit;
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
}

.btn--primary {
  color: #fff;
  background: #2563eb;
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: #1d4ed8;
}

.btn--ghost {
  color: #1d4ed8;
  background: #fff;
  border-color: #cbd5e1;
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: #93c5fd;
}

.panel {
  margin-bottom: 1rem;
  padding: 1.25rem;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
}

.panel__head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  align-items: baseline;
  margin-bottom: 1rem;
}

.panel__title {
  margin: 0;
  font-size: 1.125rem;
  color: #0f172a;
}

.panel__meta {
  margin: 0;
  font-size: 0.875rem;
  color: #64748b;
}

.form__row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.form__actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.form--compact {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid #e2e8f0;
}

.post-list,
.comment-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.post-item + .post-item {
  border-top: 1px solid #e2e8f0;
}

.post-item {
  padding: 1rem 0;
}

.post-item__link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.post-item__link:hover .post-item__title,
.post-item__link:focus-visible .post-item__title {
  color: #2563eb;
}

.post-item__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  margin-bottom: 0.4rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.badge--product {
  color: #1d4ed8;
  background: #dbeafe;
}

.badge--question {
  color: #0f766e;
  background: #ccfbf1;
}

.badge--bug {
  color: #b91c1c;
  background: #fee2e2;
}

.badge--feature {
  color: #7c3aed;
  background: #ede9fe;
}

.badge--status {
  color: #475569;
  background: #e2e8f0;
}

.post-item__title {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.45;
  color: #0f172a;
}

.post-item__excerpt,
.post-item__info {
  margin: 0.35rem 0 0;
  font-size: 0.875rem;
  line-height: 1.55;
  color: #64748b;
}

.pager {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1rem;
}

.empty {
  margin: 0;
  padding: 1.5rem 0 0.5rem;
  text-align: center;
  color: #64748b;
}

.back-link {
  margin-bottom: 0.75rem;
  padding: 0;
  border: 0;
  background: none;
  color: #2563eb;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.detail {
  margin-bottom: 1rem;
  padding: 1.25rem;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  background: #fff;
}

.detail__title {
  margin: 0.75rem 0 0;
  font-size: 1.5rem;
  line-height: 1.35;
  color: #0f172a;
}

.detail__body {
  margin: 1rem 0 0;
  white-space: pre-wrap;
  line-height: 1.7;
  color: #334155;
}

.detail__info {
  margin: 1rem 0 0;
  font-size: 0.875rem;
  color: #64748b;
}

.comment-item {
  padding: 0.875rem 0;
  border-top: 1px solid #e2e8f0;
}

.comment-item__meta {
  margin: 0;
  font-size: 0.8125rem;
  color: #64748b;
}

.comment-item__body {
  margin: 0.35rem 0 0;
  white-space: pre-wrap;
  line-height: 1.6;
  color: #334155;
}

.footer {
  margin-top: 2rem;
  text-align: center;
  font-size: 0.8125rem;
  color: #94a3b8;
}

.footer a {
  color: #475569;
  font-weight: 600;
  text-decoration: none;
}

.footer a:hover,
.footer a:focus-visible {
  color: #1d4ed8;
  text-decoration: underline;
}

@media (max-width: 640px) {
  .form__row {
    grid-template-columns: 1fr;
  }

  .toolbar {
    align-items: stretch;
  }

  .filters {
    width: 100%;
  }
}