/* ========================================
   FINANCIALLY NOMAD — Site Stylesheet
   ======================================== */

:root {
  --color-bg: #FFFFFF;
  --color-text: #3E3F43;
  --color-text-secondary: #695E55;
  --color-accent: #96151D;
  --color-accent-light: #B22028;
  --color-accent-pale: rgba(150, 21, 29, 0.07);
  --color-border: #E0DEDA;
  --color-card-bg: #FAFAF8;
  --color-tag-bg: #F0EDEA;
  --color-code-bg: #F5F3F0;
  --color-green: #2D7A4F;
  --color-green-bg: rgba(45, 122, 79, 0.06);
  --color-red: #96151D;
  --color-red-bg: rgba(150, 21, 29, 0.06);
  --color-blue: #2B5EA7;
  --color-blue-bg: rgba(43, 94, 167, 0.06);
  --font-display: 'Newsreader', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---- NAV ---- */
nav {
  max-width: 960px;
  margin: 0 auto;
  padding: 28px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  animation: fadeDown 0.6s ease-out;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--color-text);
  text-decoration: none;
}

.nav-logo span { color: var(--color-accent); }

.nav-links { display: flex; gap: 32px; list-style: none; }

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--color-text); }

/* ---- HERO ---- */
.hero {
  max-width: 960px;
  margin: 0 auto;
  padding: 64px 24px 48px;
  animation: fadeUp 0.7s ease-out 0.1s both;
}

.hero-overline {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 400;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--color-text);
  max-width: 720px;
  margin-bottom: 24px;
}

.hero h1 em {
  font-style: italic;
  color: var(--color-accent-light);
}

.hero-description {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  max-width: 600px;
}

.hero-rule {
  width: 48px;
  height: 1.5px;
  background: var(--color-accent);
  border: none;
  margin: 48px 0 0;
}

/* ---- SECTION LABELS ---- */
.section-label {
  max-width: 960px;
  margin: 0 auto;
  padding: 48px 24px 24px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  animation: fadeUp 0.7s ease-out 0.2s both;
}

.section-heading {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

/* ---- ARTICLE LIST ---- */
.articles {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px 64px;
  display: flex;
  flex-direction: column;
  gap: 1px;
  animation: fadeUp 0.7s ease-out 0.3s both;
}

.article-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: start;
  padding: 28px 0;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: inherit;
  transition: opacity 0.2s;
  cursor: pointer;
}

.article-card:first-child { border-top: 1px solid var(--color-border); }
.article-card:hover { opacity: 0.7; }

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.article-tag {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-tag-bg);
  padding: 3px 10px;
  border-radius: 3px;
}

.article-date { font-size: 0.82rem; color: var(--color-text-secondary); }

.article-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.article-excerpt {
  font-size: 0.925rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  max-width: 620px;
}

.article-read-time {
  font-size: 0.78rem;
  color: var(--color-text-secondary);
  white-space: nowrap;
  padding-top: 36px;
}

/* ---- ARTICLE HEADER (single post) ---- */
.article-header {
  max-width: 680px;
  margin: 0 auto;
  padding: 56px 24px 40px;
  animation: fadeUp 0.7s ease-out 0.1s both;
}

.article-header .back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  margin-bottom: 32px;
  transition: color 0.2s;
}

.article-header .back-link:hover { color: var(--color-text); }

.article-meta-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.article-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 2.75rem);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.article-subtitle {
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  font-family: var(--font-display);
  font-style: italic;
}

.article-info-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding-top: 24px;
  margin-top: 24px;
  border-top: 1px solid var(--color-border);
  font-size: 0.82rem;
  color: var(--color-text-secondary);
}

.article-info-bar .divider {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--color-border);
}

/* ---- ARTICLE BODY ---- */
.article-body {
  max-width: 680px;
  margin: 0 auto;
  padding: 40px 24px 80px;
  animation: fadeUp 0.7s ease-out 0.25s both;
}

.article-body p {
  font-size: 1.05rem;
  line-height: 1.78;
  margin-bottom: 24px;
}

.article-body h2 {
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-top: 48px;
  margin-bottom: 20px;
}

.article-body h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 500;
  line-height: 1.35;
  margin-top: 36px;
  margin-bottom: 16px;
}

.article-body a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s;
}

.article-body a:hover { color: var(--color-text); }
.article-body strong { font-weight: 600; }
.article-body em { font-style: italic; }

.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 8px 0;
}

.article-body figure {
  margin: 36px 0;
}

.article-body figcaption {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-top: 10px;
  font-style: italic;
  text-align: center;
}

.article-body ul, .article-body ol {
  margin: 0 0 24px 24px;
  font-size: 1.05rem;
  line-height: 1.78;
}

.article-body li { margin-bottom: 8px; }

.article-body blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: 20px;
  margin: 28px 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.article-body code {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  background: var(--color-code-bg);
  padding: 2px 6px;
  border-radius: 3px;
}

.article-body pre {
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 20px 24px;
  margin: 28px 0;
  overflow-x: auto;
}

.article-body pre code {
  background: none;
  padding: 0;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 0.92rem;
}

.article-body th {
  text-align: left;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  padding: 10px 16px;
  border-bottom: 2px solid var(--color-border);
}

.article-body td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
}

.article-body tr:last-child td { border-bottom: none; }

/* ---- CALLOUT ---- */
.callout {
  border-left: 3px solid var(--color-accent);
  background: var(--color-accent-pale);
  padding: 20px 24px;
  border-radius: 0 6px 6px 0;
  margin: 32px 0;
}

.callout-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.callout p {
  font-size: 0.95rem !important;
  line-height: 1.65 !important;
  margin-bottom: 0 !important;
}

/* ---- KEY NUMBER ---- */
.key-number {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 28px 32px;
  margin: 32px 0;
  display: flex;
  align-items: baseline;
  gap: 20px;
}

.key-number .number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--color-accent);
  line-height: 1;
  white-space: nowrap;
}

.key-number .context {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--color-text-secondary);
}

/* ---- COMPARISON ---- */
.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 32px 0;
}

.comparison-card {
  border-radius: 8px;
  padding: 24px;
  border: 1px solid var(--color-border);
}

.comparison-card.bank {
  background: var(--color-red-bg);
  border-color: rgba(179, 58, 58, 0.15);
}

.comparison-card.diy {
  background: var(--color-green-bg);
  border-color: rgba(45, 122, 79, 0.15);
}

.comparison-card .card-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.comparison-card.bank .card-label { color: var(--color-red); }
.comparison-card.diy .card-label { color: var(--color-green); }

.comparison-card .card-value {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 500;
  margin-bottom: 8px;
}

.comparison-card.bank .card-value { color: var(--color-red); }
.comparison-card.diy .card-value { color: var(--color-green); }

.comparison-card .card-detail {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ---- CHART ---- */
.chart-container {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 28px;
  margin: 36px 0;
}

.chart-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 4px;
}

.chart-subtitle {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

.chart-wrapper {
  position: relative;
  width: 100%;
  height: 320px;
}

.chart-source {
  font-size: 0.72rem;
  color: var(--color-text-secondary);
  margin-top: 12px;
  font-style: italic;
}

/* ---- FORMULA ---- */
.formula-block {
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 20px 24px;
  margin: 28px 0;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.8;
  overflow-x: auto;
}

.formula-block .comment { color: var(--color-text-secondary); }
.formula-block .highlight { color: var(--color-accent); font-weight: 500; }

/* ---- EXPANDABLE ---- */
.expandable {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin: 28px 0;
  overflow: hidden;
}

.expandable summary {
  padding: 16px 24px;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--color-card-bg);
  display: flex;
  align-items: center;
  gap: 10px;
  list-style: none;
  user-select: none;
  transition: background 0.2s;
}

.expandable summary:hover { background: var(--color-tag-bg); }
.expandable summary::-webkit-details-marker { display: none; }

.expandable summary .chevron {
  transition: transform 0.25s;
  flex-shrink: 0;
}

.expandable[open] summary .chevron { transform: rotate(90deg); }

.expandable .expand-content {
  padding: 20px 24px;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}

.expandable .expand-content p { font-size: 0.92rem; line-height: 1.7; margin-bottom: 12px; }
.expandable .expand-content p:last-child { margin-bottom: 0; }

/* ---- BOTTOM GRID (homepage) ---- */
.bottom-grid {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px 80px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 64px;
  animation: fadeUp 0.7s ease-out 0.4s both;
}

.philosophy-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 36px;
}

.philosophy-card blockquote {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-style: italic;
  line-height: 1.55;
  color: var(--color-text);
  margin-bottom: 16px;
  border: none;
  padding: 0;
}

.philosophy-card cite {
  font-family: var(--font-body);
  font-style: normal;
  font-size: 0.82rem;
  color: var(--color-text-secondary);
}

.about-aside h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 400;
  margin-bottom: 12px;
}

.about-aside p {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

.topics-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.topic-pill {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-tag-bg);
  padding: 5px 14px;
  border-radius: 20px;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}

.topic-pill:hover {
  background: var(--color-accent);
  color: white;
}

/* ---- ARTICLE FOOTER CTA ---- */
.article-footer-cta {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

.cta-box {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 36px;
  text-align: center;
}

.cta-box h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 400;
  margin-bottom: 10px;
}

.cta-box p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

/* ---- FOOTER ---- */
footer {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

footer a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

footer a:hover { color: var(--color-text); }
.footer-links { display: flex; gap: 24px; }

/* ---- ANIMATIONS ---- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .nav-links { gap: 20px; }
  .hero { padding: 40px 24px 36px; }
  .article-card { grid-template-columns: 1fr; gap: 8px; }
  .article-read-time { padding-top: 0; }
  .bottom-grid { grid-template-columns: 1fr; gap: 48px; }
  .comparison { grid-template-columns: 1fr; }
  .key-number { flex-direction: column; gap: 8px; }
  .chart-wrapper { height: 250px; }
  .article-info-bar { flex-wrap: wrap; gap: 10px; }
  footer { flex-direction: column; gap: 16px; text-align: center; }
}

@media (max-width: 480px) {
  .nav-links { gap: 16px; }
  .nav-links a { font-size: 0.8rem; }
  .hero h1 { font-size: 1.85rem; }
  .article-header h1 { font-size: 1.65rem; }
}