* {
  box-sizing: border-box;
}

:root {
  font-family: Inter, "Noto Sans KR", system-ui, -apple-system, sans-serif;
  color: #152238;
  background: #f5f7fb;
}

body {
  margin: 0;
}

a {
  color: #1769ff;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.topbar {
  height: 68px;
  position: sticky;
  top: 0;
  z-index: 5;
  background: #fff;
  border-bottom: 1px solid #e5eaf2;
  display: flex;
  align-items: center;
  gap: 30px;
  padding: 0 max(22px, calc((100vw - 1080px) / 2));
}

.brand {
  font-weight: 850;
  letter-spacing: -0.7px;
  font-size: 21px;
  color: #14233b;
  white-space: nowrap;
}

.brand span {
  color: #1769ff;
}

.topbar nav {
  display: flex;
  align-items: center;
  gap: 20px;
  flex: 1;
}

.topbar nav a,
.link-button {
  font-size: 14px;
  color: #46546b;
}

.account {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: #68768b;
}

.layout {
  max-width: 850px;
  margin: 34px auto;
  padding: 0 18px;
}

.panel,
.post-card {
  background: #fff;
  border: 1px solid #e5eaf2;
  border-radius: 18px;
  padding: 24px;
  margin-bottom: 18px;
  box-shadow: 0 4px 18px #13294b05;
}

.panel h1,
.feed-heading h1 {
  margin: 0 0 10px;
  font-size: 25px;
  letter-spacing: -0.8px;
}

.feed-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: 20px 0 26px;
}

.eyebrow {
  font-size: 10px;
  letter-spacing: 2px;
  font-weight: 800;
  color: #1769ff;
  margin: 0 0 8px;
}

.muted {
  color: #748197;
}

.small {
  font-size: 12px;
  line-height: 1.6;
}

.search-row {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.search-row input {
  flex: 1;
}

input,
textarea {
  width: 100%;
  font: inherit;
  font-size: 14px;
  padding: 12px 13px;
  border: 1px solid #dbe2ed;
  border-radius: 10px;
  background: #fff;
  color: #152238;
  outline: none;
}

input:focus,
textarea:focus {
  border-color: #1769ff;
  box-shadow: 0 0 0 3px #1769ff16;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  margin: 15px 0;
  color: #39475d;
}

label input,
label textarea {
  display: block;
  margin-top: 7px;
  font-weight: 400;
}

button {
  font: inherit;
  border: 0;
  cursor: pointer;
  border-radius: 10px;
  padding: 10px 15px;
  font-size: 13px;
  font-weight: 700;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.primary {
  background: #1769ff;
  color: white;
}

.secondary {
  background: #edf3ff;
  color: #1859c9;
}

.quiet,
.link-button {
  background: transparent;
  color: #64748b;
}

.link-button {
  padding: 8px;
}

.actions,
.editor-tools {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 15px;
}

.feed {
  display: grid;
  gap: 14px;
}

.post-card {
  padding: 20px;
  margin: 0;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 9px;
  color: #7b8799;
  font-size: 12px;
  flex-wrap: wrap;
}

.avatar {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #e9f0ff;
  color: #1859c9;
  font-weight: 800;
  object-fit: cover;
  flex-shrink: 0;
}

.author {
  font-weight: 750;
  color: #20314b;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 10px;
  font-weight: 800;
  border-radius: 20px;
  padding: 3px 7px;
}

.badge.official {
  color: #fff;
  background: #1769ff;
}

.badge.personal {
  color: #493500;
  background: #f5c542;
}

.post-title {
  font-size: 19px;
  letter-spacing: -0.4px;
  margin: 16px 0 8px;
  color: #17253a;
  overflow-wrap: anywhere;
}

.post-body {
  font-size: 14px;
  line-height: 1.85;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  color: #38465b;
}

.post-body a {
  overflow-wrap: anywhere;
}

.post-body img,
.post-body video {
  display: block;
  max-width: 100%;
  max-height: 520px;
  border-radius: 12px;
  margin: 12px 0;
}

.attachment-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.attachment {
  border: 1px solid #e0e7f2;
  border-radius: 10px;
  padding: 9px;
  max-width: 100%;
  font-size: 12px;
}

.attachment img {
  display: block;
  max-width: 100%;
  max-height: 360px;
  border-radius: 8px;
  margin-bottom: 7px;
}

.post-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid #eef1f6;
  margin-top: 16px;
  padding-top: 12px;
}

.post-actions button {
  background: transparent;
  color: #62718a;
  padding: 6px 0;
}

.post-actions button.liked {
  color: #1769ff;
}

.comments {
  margin-top: 20px;
  border-top: 1px solid #eef1f6;
  padding-top: 16px;
}

.comment {
  padding: 10px 0;
  border-bottom: 1px solid #f0f2f6;
  font-size: 13px;
  line-height: 1.6;
}

.comment-form {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.comment-form input {
  flex: 1;
}

.notice {
  padding: 13px 16px;
  border-radius: 12px;
  background: #fff6d8;
  color: #795b00;
  margin-bottom: 16px;
  font-size: 13px;
}

.notice.error {
  background: #fff0f0;
  color: #a32e2e;
}

.loading,
.empty {
  text-align: center;
  padding: 34px 12px;
  color: #7b8799;
  font-size: 14px;
}

.profile-header {
  display: flex;
  gap: 18px;
  align-items: center;
}

.profile-header .avatar {
  width: 76px;
  height: 76px;
  font-size: 23px;
}

.profile-name {
  font-size: 23px;
  font-weight: 850;
}

.profile-bio {
  white-space: pre-wrap;
  line-height: 1.7;
  color: #64748b;
  font-size: 14px;
  margin-top: 8px;
}

.count-row {
  display: flex;
  gap: 16px;
  margin-top: 12px;
  font-size: 13px;
  color: #63718a;
}

.count-row strong {
  color: #1d2b41;
}

.profile-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 15px;
}

footer {
  text-align: center;
  padding: 38px 0 20px;
  font-size: 11px;
  color: #9aa5b5;
}

footer span {
  padding: 0 7px;
}

@media (max-width: 600px) {
  .topbar {
    height: auto;
    min-height: 60px;
    padding: 12px 15px;
    gap: 12px;
    flex-wrap: wrap;
  }

  .topbar nav {
    order: 3;
    width: 100%;
    gap: 16px;
  }

  .account {
    margin-left: auto;
  }

  .account #userLabel {
    display: none;
  }

  .layout {
    margin: 18px auto;
    padding: 0 12px;
  }

  .panel {
    padding: 18px;
  }

  .feed-heading {
    align-items: flex-start;
  }

  .feed-heading h1 {
    font-size: 22px;
  }

  .feed-heading .primary {
    white-space: nowrap;
  }

  .post-card {
    padding: 16px;
  }

  .post-title {
    font-size: 17px;
  }
}