:root {
  color-scheme: light;
  --bg: #f7f7f4;
  --panel: #ffffff;
  --panel-soft: #efefea;
  --text: #181817;
  --muted: #696963;
  --line: #d9d8d0;
  --accent: #145c48;
  --accent-ink: #ffffff;
  --danger: #9d2b2b;
  --shadow: 0 22px 60px rgba(24, 24, 23, 0.08);
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --serif: Georgia, "Times New Roman", "Noto Serif KR", serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #111210;
  --panel: #191a17;
  --panel-soft: #23251f;
  --text: #eeeeea;
  --muted: #a2a39b;
  --line: #34362f;
  --accent: #8abfa6;
  --accent-ink: #101210;
  --danger: #f08b83;
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  letter-spacing: 0;
  transition: background-color 180ms ease, color 180ms ease;
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: progress;
  opacity: 0.7;
}

svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.app-shell {
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: minmax(138px, 210px) 42px minmax(220px, 560px) 42px;
  align-items: center;
  gap: 14px;
  padding: 14px 28px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(14px);
  transition:
    background-color 180ms ease,
    border-color 180ms ease;
}

.brand {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  min-height: 44px;
  border: 0;
  padding: 0;
  background: transparent;
  color: inherit;
}

.brand-logo {
  display: block;
  width: clamp(138px, 14vw, 210px);
  height: auto;
  object-fit: contain;
  transition: filter 180ms ease;
}

[data-theme="dark"] .brand-logo {
  filter: invert(1);
}

.topbar-actions {
  display: flex;
  justify-content: end;
  gap: 10px;
}

.back-slot {
  display: grid;
  width: 42px;
  min-height: 42px;
  place-items: center;
}

.content {
  width: min(1120px, 100%);
  min-width: 0;
  margin: 0 auto;
  padding: 34px 28px 56px;
}

.search-wrap {
  display: grid;
  gap: 8px;
}

label {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.search-wrap label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  outline: 0;
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    box-shadow 180ms ease;
}

input {
  height: 44px;
  padding: 0 13px;
}

textarea {
  resize: vertical;
  min-height: 380px;
  padding: 13px;
  font-family: var(--mono);
  line-height: 1.65;
}

input:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}

.primary-button,
.ghost-button,
.danger-button,
.icon-button,
.theme-button,
.small-icon-button {
  min-height: 42px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    opacity 180ms ease;
}

.primary-button,
.ghost-button,
.danger-button {
  padding: 0 15px;
}

.primary-button {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 750;
}

.danger-button {
  border-color: color-mix(in srgb, var(--danger) 45%, var(--line));
  color: var(--danger);
}

.icon-button,
.theme-button,
.small-icon-button {
  display: grid;
  width: 42px;
  place-items: center;
  padding: 0;
}

.small-icon-button {
  width: 34px;
  min-height: 34px;
  color: var(--muted);
}

.small-icon-button svg {
  width: 17px;
  height: 17px;
}

.small-icon-button:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  color: var(--accent);
}

.theme-toggle {
  display: flex;
}

.theme-button {
  position: relative;
  overflow: hidden;
}

.theme-icon {
  position: absolute;
  display: grid;
  inset: 0;
  place-items: center;
  transition:
    opacity 180ms ease,
    transform 180ms ease;
}

.theme-icon-light {
  opacity: 1;
  transform: rotate(0) scale(1);
}

.theme-icon-dark {
  opacity: 0;
  transform: rotate(-25deg) scale(0.82);
}

[data-theme="dark"] .theme-icon-light {
  opacity: 0;
  transform: rotate(25deg) scale(0.82);
}

[data-theme="dark"] .theme-icon-dark {
  opacity: 1;
  transform: rotate(0) scale(1);
}

.club {
  margin: 0 0 5px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 22px;
}

.section-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-head h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(30px, 3.4vw, 48px);
  font-weight: 500;
  line-height: 1.04;
}

.count-pill {
  min-width: 44px;
  border: 1px solid var(--line);
  padding: 8px 12px;
  color: var(--muted);
  text-align: center;
  transition:
    border-color 180ms ease,
    color 180ms ease;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}

.post-card {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 14px;
  min-height: 238px;
  border: 1px solid var(--line);
  padding: 22px;
  background: var(--panel);
  color: var(--text);
  text-align: left;
  box-shadow: var(--shadow);
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease,
    color 180ms ease;
}

.post-card:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  background: var(--panel-soft);
}

.post-card strong {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 500;
  line-height: 1.18;
}

.post-card-date,
.post-card-excerpt {
  color: var(--muted);
  font-size: 14px;
}

.post-card-excerpt {
  line-height: 1.65;
}

.post-card-bottom {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
}

.post-card-author {
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  border: 1px solid var(--line);
  padding: 3px 7px;
  color: var(--muted);
  font-size: 12px;
  transition:
    border-color 180ms ease,
    color 180ms ease;
}

.post-view {
  width: min(100%, 880px);
  min-height: calc(100vh - 170px);
  margin: 0 auto;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: clamp(28px, 5vw, 72px);
  box-shadow: var(--shadow);
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.post-meta,
.post-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 14px;
}

.post-actions {
  justify-content: flex-start;
  margin: 0 0 36px;
}

.post-title-block {
  display: grid;
  gap: 10px;
  margin-bottom: 34px;
}

.post-title-tools {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.post-author {
  color: var(--muted);
  font-size: 14px;
}

.post-view h2 {
  margin-bottom: 0;
  font-family: var(--serif);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 500;
  line-height: 1.08;
}

.post-body {
  max-width: 760px;
  font-family: var(--serif);
  font-size: 20px;
  line-height: 1.9;
}

.post-body h3 {
  margin: 44px 0 12px;
  font-family: var(--sans);
  font-size: 22px;
}

.post-body h1,
.post-body h2 {
  margin: 42px 0 14px;
  font-family: var(--sans);
  line-height: 1.25;
}

.post-body h1 {
  font-size: 30px;
}

.post-body h2 {
  font-size: 25px;
}

.post-body ul,
.post-body ol {
  padding-left: 1.35em;
}

.post-body li + li {
  margin-top: 6px;
}

.post-body a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.post-body code {
  padding: 2px 5px;
  background: var(--panel-soft);
  font-family: var(--mono);
  font-size: 0.9em;
}

.post-body pre {
  overflow: auto;
  border: 1px solid var(--line);
  padding: 14px;
  background: var(--panel-soft);
}

.post-body pre code {
  padding: 0;
  background: transparent;
}

.post-body blockquote {
  margin: 30px 0;
  padding-left: 18px;
  border-left: 2px solid var(--accent);
  color: var(--muted);
}

.post-body table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--sans);
  font-size: 15px;
}

.post-body th,
.post-body td {
  border: 1px solid var(--line);
  padding: 9px 10px;
  text-align: left;
}

.post-body img {
  max-width: 100%;
  height: auto;
}

.empty-state {
  display: grid;
  min-height: 280px;
  place-items: center;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--muted);
  text-align: center;
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    color 180ms ease;
}

.site-footer {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 0 28px 34px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
  transition: color 180ms ease;
}

.modal,
.editor-modal {
  width: min(460px, calc(100vw - 28px));
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  box-shadow: var(--shadow);
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    color 180ms ease;
}

.editor-modal {
  width: min(980px, calc(100vw - 28px));
}

.modal::backdrop,
.editor-modal::backdrop {
  background: rgba(0, 0, 0, 0.42);
}

.modal form,
.editor-modal form {
  margin: 0;
  padding: 22px;
}

.modal h2,
.editor-modal h2 {
  margin-bottom: 8px;
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 500;
}

.modal-actions,
.editor-actions,
.editor-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.editor-head {
  margin-bottom: 18px;
}

.editor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.editor-grid label {
  display: grid;
  gap: 8px;
}

.editor-grid .wide {
  grid-column: 1 / -1;
}

.editor-actions {
  margin-top: 10px;
}

.editor-actions > div {
  display: flex;
  gap: 10px;
}

.error-text {
  min-height: 20px;
  color: var(--danger);
  font-size: 13px;
}

[hidden] {
  display: none !important;
}

@media (max-width: 860px) {
  .topbar {
    grid-template-columns: minmax(112px, 1fr) 38px 38px;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
  }

  .brand {
    grid-column: 1;
  }

  .back-slot {
    grid-column: 2;
    grid-row: 1;
    width: 38px;
    min-height: 38px;
  }

  .search-wrap {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .topbar-actions {
    grid-column: 3;
    grid-row: 1;
    justify-content: end;
  }

  input {
    height: 40px;
  }

  .primary-button,
  .ghost-button,
  .danger-button,
  .icon-button,
  .theme-button,
  .small-icon-button {
    min-height: 38px;
  }

  .icon-button,
  .theme-button {
    width: 38px;
  }

  .small-icon-button {
    width: 34px;
    min-height: 34px;
  }
}

@media (max-width: 640px) {
  .content {
    padding: 24px 18px 44px;
  }

  .site-footer {
    padding: 0 18px 28px;
  }

  .primary-button {
    flex: 1;
  }

  .post-grid {
    grid-template-columns: 1fr;
  }

  .post-card {
    min-height: 210px;
    padding: 18px;
  }

  .post-view {
    padding: 24px 18px;
  }

  .editor-grid {
    grid-template-columns: 1fr;
  }

  .editor-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .editor-actions > div {
    width: 100%;
    flex-direction: column;
  }

  .editor-actions .primary-button,
  .editor-actions .ghost-button,
  .editor-actions .danger-button {
    width: 100%;
  }
}