/* ─── Flexoki palette ─── */
:root {
  --bg:      #fffcf0;
  --tx:      #100f0f;
  --tx-2:    #403e3c;
  --tx-3:    #767370; /* darkened from #878580 for WCAG AA contrast (4.6:1 on --bg) */
  --ui:      #e6e4d9;
  --ui-2:    #cecdc3;
  --accent:  #1a56a0;
  --accent-h:#2e6dba;
}

html.theme-dark {
  --bg:      #100f0f;
  --tx:      #fffcf0;
  --tx-2:    #cecdc3;
  --tx-3:    #878580;
  --ui:      #282726;
  --ui-2:    #403e3c;
  --accent:  #4d82b8;
  --accent-h:#6699cc;
}

/* ─── Reset ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ─── Skip link ─── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--bg);
  color: var(--accent);
  padding: 0.5rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 600;
  z-index: 9999;
  text-decoration: none;
}
.skip-link:focus { top: 1rem; }

/* ─── Screen reader only ─── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ─── Focus styles ─── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ─── Smooth theme transition (only fires during toggle) ─── */
html.theme-transitioning,
html.theme-transitioning *,
html.theme-transitioning *::before,
html.theme-transitioning *::after {
  transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease !important;
}

/* ─── Base ─── */
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

html { font-size: 18px; }

body {
  font-family: 'Montserrat', system-ui, sans-serif;
  background: var(--bg);
  color: var(--tx);
  line-height: 1.75;
  max-width: 740px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }


/* ─── Header & Nav ─── */
header {
  padding: 2rem 0 1.5rem;
  margin-bottom: 3rem;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-title {
  font-family: 'Caveat', cursive;
  font-weight: 700;
  font-size: 1.75rem;
  letter-spacing: 0.01em;
  color: var(--tx);
  white-space: nowrap;
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
  font-size: 0.95rem;
  font-weight: 500;
  flex-shrink: 0;
}

.nav-links a {
  color: var(--tx-3);
  transition: color 0.15s;
  white-space: nowrap;
}

.nav-links a:hover { color: var(--tx); }
.nav-links a.nav-active { color: var(--tx); font-weight: 600; }

/* ─── Mobile ─── */
@media (max-width: 520px) {
  nav { gap: 0.5rem; }
  .nav-links { font-size: 0.8rem; }
  .sep { padding: 0 0.25rem; }
  .site-title { font-size: 1.4rem; }
}

.sep {
  color: var(--ui-2);
  padding: 0 0.45rem;
  user-select: none;
  font-weight: 400;
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  color: var(--tx-3);
  padding: 0;
  line-height: 1;
  font-family: inherit;
  transition: color 0.15s;
  position: relative;
  top: -1px;
  display: flex;
  align-items: center;
}

.theme-toggle:hover { color: var(--tx); }

.theme-toggle svg { display: block; margin: 0; padding: 0; }
.theme-toggle .icon-sun  { display: none; }
html.theme-dark .theme-toggle .icon-sun  { display: block; }
html.theme-dark .theme-toggle .icon-moon { display: none; }

.icon-inline {
  display: inline-block;
  vertical-align: middle;
  position: relative;
  top: -1px;
  margin: 0 0.3em;
}

/* ─── Home intro ─── */
.intro {
  color: var(--tx-2);
  margin-bottom: 0.5rem;
  font-size: 0.975rem;
  line-height: 1.75;
}

.start-here {
  font-size: 0.975rem;
  line-height: 1.75;
  color: var(--tx-2);
  margin-bottom: 2.75rem;
}

.start-here a {
  color: var(--accent);
  transition: color 0.15s;
}

.start-here a:hover { color: var(--accent-h); }

/* ─── Tag cloud ─── */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 0;
  padding: 0.55rem 0;
  border-top: 1px solid var(--ui);
  border-bottom: 1px solid var(--ui);
  margin-bottom: 3rem;
}

.tag-link {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--tx);
  transition: color 0.15s;
}

.tag-link::after {
  content: "·";
  margin: 0 0.6rem;
  color: var(--tx-3);
  font-weight: 400;
  font-size: 1.25rem;
}

.tag-link:last-of-type::after { display: none; }

.tag-link:hover { color: var(--accent); }

/* ─── Section label ─── */
.writing-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tx-3);
  margin-bottom: 0.6rem;
}

/* ─── Latest section ─── */
.latest-list {
  list-style: none;
  margin-bottom: 3rem;
}

.latest-list li { border-top: 1px solid var(--ui); }
.latest-list li:last-child { border-bottom: 1px solid var(--ui); }

.latest-list a {
  display: grid;
  grid-template-columns: 6rem 5.5rem 1fr;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.55rem 0;
  color: var(--tx);
  transition: color 0.15s;
}

.latest-list a:hover { color: var(--accent); }

.latest-date {
  font-size: 0.75rem;
  color: var(--tx-3);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.latest-tag {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--tx-3);
}

@media (max-width: 520px) {
  .latest-list a {
    grid-template-columns: 5rem 1fr;
    grid-template-rows: auto auto;
  }
  .latest-tag {
    grid-column: 2;
    grid-row: 2;
  }
}

.latest-title {
  font-size: 0.925rem;
  font-weight: 500;
}

/* ─── Writing/section list ─── */
.writing-list { list-style: none; margin-bottom: 3rem; }

.writing-list li { border-top: 1px solid var(--ui); }
.writing-list li:last-child { border-bottom: 1px solid var(--ui); }

.writing-list a {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 0.55rem 0;
  color: var(--tx);
  transition: color 0.15s;
}

.writing-list a:hover { color: var(--accent); }

.post-date {
  font-size: 0.775rem;
  color: var(--tx-3);
  white-space: nowrap;
  flex-shrink: 0;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.post-title {
  font-size: 0.925rem;
  font-weight: 500;
}

/* ─── Section page heading ─── */
.section-intro {
  color: var(--tx-2);
  font-size: 0.925rem;
  margin-bottom: 1.75rem;
  margin-top: -0.75rem;
}

.section-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1.75rem;
  color: var(--tx-2);
  letter-spacing: -0.01em;
}

.latest-tag.ongoing { color: var(--accent); }

/* ─── Article ─── */
.post-header { margin-bottom: 2.5rem; }

.post-header h1 {
  font-size: 1.6rem;
  line-height: 1.2;
  letter-spacing: -0.025em;
  font-weight: 600;
  margin-bottom: 0.6rem;
}

.post-meta {
  font-size: 0.8rem;
  color: var(--tx-3);
  display: flex;
  gap: 1rem;
  align-items: center;
  font-weight: 500;
}

.tags { display: flex; gap: 0.4rem; }

.tag {
  background: var(--ui);
  color: var(--tx-2);
  padding: 0.1rem 0.45rem;
  border-radius: 3px;
  font-size: 0.725rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

/* ─── Content typography ─── */
.content { font-size: 0.975rem; line-height: 1.8; overflow-wrap: break-word; word-break: break-word; }

.content h2 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 2.25rem 0 0.75rem;
  letter-spacing: -0.01em;
}

.content h3 {
  font-size: 0.975rem;
  font-weight: 600;
  margin: 1.75rem 0 0.5rem;
}

.content p { margin-bottom: 1.25rem; }

.content ul, .content ol { margin: 0 0 1.25rem 1.4rem; }
.content li { margin-bottom: 0.3rem; }

.content blockquote {
  border-left: 2px solid var(--ui);
  margin: 1.5rem 0;
  padding: 0.25rem 0 0.25rem 1.25rem;
  color: var(--tx-2);
  font-style: italic;
}

.content a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 3px;
  transition: text-decoration-color 0.15s;
}

.content a:hover { text-decoration-color: var(--accent-h); }

.content code {
  font-family: ui-monospace, 'Cascadia Code', monospace;
  font-size: 0.85em;
  background: var(--ui);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

.content pre {
  background: var(--ui);
  padding: 1rem 1.25rem;
  border-radius: 6px;
  overflow-x: auto;
  margin: 1.25rem 0;
}

.content pre code { background: none; padding: 0; font-size: 0.875rem; }
.content hr { border: none; border-top: 1px solid var(--ui); margin: 2rem 0; }

/* ─── Post footer ─── */
.post-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--ui);
  font-size: 0.875rem;
}

.post-footer a { color: var(--tx-3); font-weight: 500; transition: color 0.15s; }
.post-footer a:hover { color: var(--accent); }

/* ─── Standalone pages ─── */
.page-header { margin-bottom: 2.5rem; }

.page-header h1 {
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.page-updated {
  font-size: 0.8rem;
  color: var(--tx-3);
  margin-top: 0.4rem;
  font-weight: 500;
}

/* ─── Footer ─── */
footer {
  margin-top: 4rem;
  padding: 1.5rem 0 2rem;
  border-top: 1px solid var(--ui);
  font-size: 0.775rem;
  color: var(--tx-3);
  font-weight: 500;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 0;
}

.footer-links a {
  color: var(--tx-3) !important;
  font-size: 0.775rem !important;
  font-weight: 500 !important;
  transition: color 0.15s;
}

.footer-links a:hover { color: var(--tx); }

/* ─── Consulting selector ─── */
.welcome-card {
  min-height: 6rem;
  border-radius: 6px;
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ui-2);
  margin-bottom: 2.5rem;
}

.welcome-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/cover-svg.svg');
  background-size: cover;
  background-position: center;
  opacity: 0.25;
  pointer-events: none;
}

.welcome-card-text {
  position: relative;
  font-size: 1rem;
  font-weight: 500;
  color: var(--tx);
  text-align: center;
}

.consulting-question {
  font-size: 1rem;
  color: var(--tx-2);
  margin-bottom: 2rem;
  margin-top: -1.5rem;
}

.consulting-selector {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.consulting-choice {
  display: block;
  border: 1px solid var(--ui-2);
  padding: 1.4rem 1.6rem;
  border-radius: 5px;
  text-decoration: none;
  color: var(--tx);
  transition: border-color 0.15s, color 0.15s;
}

.consulting-choice:hover { border-color: var(--accent); }

.consulting-choice-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  transition: color 0.15s;
}

.consulting-choice:hover .consulting-choice-title { color: var(--accent); }

.consulting-choice-desc {
  font-size: 0.875rem;
  color: var(--tx-3);
  line-height: 1.6;
}

/* ─── Disclaimer block ─── */
.disclaimer {
  border-left: 2px solid var(--ui-2);
  padding: 0.4rem 0 0.4rem 1.1rem;
  color: var(--tx-3);
  font-size: 0.875rem;
  line-height: 1.7;
  margin: 1.75rem 0;
}

/* ─── Contact form ─── */
.contact-form { margin-top: 1.5rem; }

.form-hidden { display: none; }

.form-label-opt {
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.8rem;
}

.form-group { margin-bottom: 1.1rem; }

.form-group label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--tx-3);
  margin-bottom: 0.35rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--ui-2);
  border-radius: 4px;
  padding: 0.55rem 0.7rem;
  font-family: inherit;
  font-size: 0.925rem;
  color: var(--tx);
  transition: border-color 0.15s;
  appearance: none;
  -webkit-appearance: none;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23767370' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.7rem center;
  padding-right: 2rem;
  cursor: pointer;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 7rem;
  line-height: 1.6;
}

.form-submit {
  background: var(--tx);
  color: var(--bg);
  border: none;
  padding: 0.55rem 1.4rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  transition: opacity 0.15s;
  margin-top: 0.25rem;
}

.form-submit:hover { opacity: 0.75; }