:root {
  --orange: #ff6b12;
  --orange-dark: #df5200;
  --black: #111111;
  --text: #242424;
  --muted: #6f6f6f;
  --line: #eeeeee;
  --bg: #ffffff;
  --soft: #fff5ee;
  --max: 880px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
}
a { color: var(--orange-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header {
  border-top: 8px solid var(--orange);
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 22px max(24px, calc((100vw - var(--max)) / 2));
}
.brand { color: var(--black); text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand-main { display:block; font-size: 2rem; font-weight: 900; letter-spacing: -0.04em; }
.brand-sub { display:block; color: var(--muted); font-size: .85rem; margin-top: -4px; }
.nav { display:flex; gap: 18px; font-weight: 700; }
.nav a { color: var(--black); }

.container { max-width: var(--max); margin: 0 auto; padding: 42px 24px 70px; }
.hero { padding: 48px 0 42px; border-bottom: 1px solid var(--line); }
.eyebrow { color: var(--orange); font-weight: 900; letter-spacing: .08em; margin: 0 0 6px; }
h1 { font-size: clamp(2rem, 6vw, 4rem); line-height: 1.1; margin: 0 0 20px; letter-spacing: -0.05em; color: var(--black); }
h2 { font-size: 1.45rem; margin-top: 46px; color: var(--black); }
h3 { color: var(--black); line-height: 1.4; }

.post-card { padding: 28px 0; border-bottom: 1px solid var(--line); }
.post-card h3 { margin: 0 0 8px; font-size: 1.45rem; }
.meta { display: flex; flex-wrap: wrap; gap: 8px; color: var(--muted); font-size: .92rem; }
.meta span:not(:last-child)::after { content: " /"; color: #b7b7b7; }
.post-card p { margin: 12px 0 0; }

.post-detail { max-width: 760px; margin: 0 auto; }
.work-info {
  margin: 28px 0 42px;
  border-left: 5px solid var(--orange);
  background: var(--soft);
  padding: 18px 22px;
}
.work-info div { display: grid; grid-template-columns: 96px 1fr; gap: 12px; }
.work-info dt { color: var(--muted); font-weight: 700; }
.work-info dd { margin: 0; }
.body-text { font-size: 1.05rem; }
.body-text p { margin: 0 0 1.35em; }

.comments { max-width: 760px; margin: 64px auto 0; padding-top: 32px; border-top: 1px solid var(--line); }
.comment { border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; margin: 14px 0; }
.comment-name { font-weight: 900; color: var(--orange-dark); margin: 0 0 6px; }
.comment-form { margin-top: 28px; background: #fafafa; border-radius: 18px; padding: 22px; }

label { display: block; font-weight: 800; margin: 14px 0; }
input, textarea {
  width: 100%; margin-top: 6px; padding: 12px 14px;
  border: 1px solid #dddddd; border-radius: 12px;
  font: inherit; background: white;
}
textarea { resize: vertical; }
button, .button {
  display: inline-block; border: 0; border-radius: 999px; background: var(--orange); color: white;
  font-weight: 900; padding: 11px 20px; cursor: pointer; font: inherit; text-decoration: none;
}
button:hover, .button:hover { background: var(--orange-dark); text-decoration: none; }
.hint, .flash { color: var(--muted); font-size: .92rem; }
.flash { background: var(--soft); border-left: 5px solid var(--orange); padding: 10px 16px; margin-bottom: 24px; }

.page { max-width: 720px; }
.footer { max-width: var(--max); margin: 0 auto; padding: 32px 24px; border-top: 1px solid var(--line); color: var(--muted); }

.admin-box, .editor, .admin-section, .admin-header { max-width: 760px; margin: 0 auto; }
.admin-row { display:flex; justify-content:space-between; gap:16px; align-items:flex-start; padding:16px 0; border-bottom:1px solid var(--line); }
.admin-row small { display:block; color:var(--muted); }
.admin-actions { display:flex; gap:12px; align-items:center; }
.admin-actions form { margin:0; }
.link-button { background:transparent; color:var(--orange-dark); padding:0; border-radius:0; }
.link-button:hover { background:transparent; text-decoration:underline; }
.danger { background:#333; }
.check { display:flex; gap:10px; align-items:center; }
.check input { width:auto; margin:0; }

@media (max-width: 640px) {
  .site-header { align-items:flex-start; flex-direction: column; padding: 18px 20px; }
  .brand-main { font-size: 1.8rem; }
  .container { padding: 28px 20px 54px; }
  .hero { padding-top: 24px; }
  .work-info div { grid-template-columns: 1fr; gap: 0; margin-bottom: 8px; }
  .admin-row { flex-direction: column; }
}

.site-title {
  font-size: 2.1rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.15;
  color: var(--orange-dark);
}

.site-tagline {
  font-size: 1.15rem;
  font-weight: 500;
  margin: 0.25rem 0 0;
  line-height: 1.2;
  color: var(--muted);
}

/* editor upgrades */
.brand-main {
  line-height: 1.05;
  margin: 0;
}
.brand-sub {
  line-height: 1.2;
  margin-top: 3px;
}
.editor-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 8px;
}
.editor-toolbar button {
  background: var(--soft);
  color: var(--orange-dark);
  border: 1px solid #ffd7bd;
  padding: 7px 13px;
  font-size: .9rem;
}
.editor-toolbar button:hover {
  background: var(--orange);
  color: white;
}
.markdown-help {
  margin: 10px 0 22px;
  color: var(--muted);
}
.markdown-help summary {
  cursor: pointer;
  font-weight: 800;
  color: var(--orange-dark);
}
.markdown-help pre {
  white-space: pre-wrap;
  background: #fafafa;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
}
.upload-box {
  margin: 28px 0;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fafafa;
}
.upload-box h2 {
  margin: 0 0 8px;
  font-size: 1.2rem;
}
.upload-controls {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 10px;
  align-items: end;
}
.upload-controls input { margin-top: 0; }
.markdown-body h2,
.markdown-body h3 {
  margin-top: 2.2em;
  margin-bottom: .7em;
}
.markdown-body h2 {
  font-size: 1.55rem;
  border-left: 5px solid var(--orange);
  padding-left: 12px;
}
.markdown-body h3 { font-size: 1.25rem; }
.markdown-body blockquote {
  margin: 1.6em 0;
  padding: .2em 1.2em;
  border-left: 5px solid var(--line);
  color: #555;
}

.markdown-body img,
.body-text img {
  display: block;
  max-width: min(100%, 520px);
  height: auto;
  margin: 1.5rem auto;
  border-radius: 10px;
}
.markdown-body ul,
.markdown-body ol { padding-left: 1.5em; }
.markdown-body code {
  background: #f5f5f5;
  padding: .1em .35em;
  border-radius: 5px;
}
@media (max-width: 640px) {
  .upload-controls { grid-template-columns: 1fr; }
}

.form-actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-top: 1rem;
}

.secondary-button {
  background: white;
  color: var(--text);
  border: 1px solid var(--border);
}

.preview-area {
  margin-top: 2rem;
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fff;
}

.about-image {
  width: 100%;
  max-width: 520px;
  border-radius: 16px;
  display: block;
  margin: 1.5rem auto;
}