/* International Climate News — site stylesheet */

:root {
  --ink: #211d1a;
  --accent: #c2542d;
  --accent-dark: #9c4321;
  --gray: #766e62;
  --gray-light: #a89d8c;
  --border: #e8e0d3;
  --tint: #f5ede1;
  --tint-border: #e9dbc4;
  --bg: #faf8f4;
  --card-bg: #fffefc;
  --max-w: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: "Fraunces", Georgia, "Times New Roman", serif;
  color: var(--ink);
  line-height: 1.25;
  margin: 0 0 0.5em;
  font-weight: 600;
}

p { margin: 0 0 1em; color: var(--ink); }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

.eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.eyebrow.muted { color: var(--gray-light); }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header / nav */
header.site-header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(6px);
  z-index: 50;
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
}

.brand-text .brand-title {
  font-family: "Fraunces", serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink);
  letter-spacing: 0.01em;
}

.brand-text .brand-sub {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-light);
}

nav.site-nav {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}

nav.site-nav a {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gray);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}

nav.site-nav a:hover,
nav.site-nav a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  text-decoration: none;
}

/* Hero */
.hero {
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  max-width: 820px;
}

.hero .dateline {
  color: var(--gray-light);
  font-size: 0.88rem;
  margin-top: 6px;
}

.authorline {
  font-size: 1.02rem;
  margin: 18px 0 22px;
  color: var(--ink);
}

.authorline .aff {
  color: var(--gray);
  font-size: 0.86rem;
}

/* Centered hero (Home) */
.hero-center > .container > .eyebrow,
.hero-center > .container > h1,
.hero-center > .container > .dateline,
.hero-center > .container > .authorline {
  text-align: center;
}
.hero-center h1 { margin-left: auto; margin-right: auto; }
.hero-center .btn-row { justify-content: center; }

/* Justified, wide-measure paragraphs */
.justify { text-align: justify; text-align-last: left; }
.wide-justify {
  max-width: none !important;
  text-align: justify;
  text-align-last: left;
}

/* Buttons */
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1.5px solid var(--ink);
  cursor: pointer;
  font-family: inherit;
}

.btn.solid {
  background: var(--accent);
  color: #fff;
}
.btn.solid:hover { background: var(--accent-dark); text-decoration: none; }

.btn.outline {
  background: transparent;
  color: var(--ink);
}
.btn.outline:hover { background: var(--tint); text-decoration: none; }

/* Abstract card */
.card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px 30px;
  background: var(--card-bg);
}

.abstract-card {
  margin-top: 34px;
  background: var(--tint);
  border-color: var(--tint-border);
}

.abstract-card h3 {
  margin-bottom: 12px;
  font-size: 1.1rem;
}

.keywords {
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--gray);
}

.keywords strong { color: var(--ink); }

/* Sections */
section.page-section {
  padding: 56px 0;
  border-bottom: 1px solid var(--border);
}

section.page-section:last-of-type { border-bottom: none; }

.section-label {
  margin-bottom: 8px;
}

.section-title {
  font-size: 1.7rem;
  max-width: 760px;
}

.section-intro {
  color: var(--gray);
  max-width: 720px;
  margin-top: 10px;
}

/* Authors grid */
.authors-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin-top: 32px;
}

@media (max-width: 820px) {
  .authors-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .authors-grid { grid-template-columns: 1fr; }
}

.author-card { text-align: center; }

.author-photo {
  width: 184px;
  height: 184px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 16px;
  border: 1px solid var(--border);
  background: var(--tint);
}

.author-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-name {
  font-family: "Fraunces", serif;
  font-weight: 700;
  color: var(--ink);
  font-size: 1.02rem;
}

.author-role {
  font-size: 0.82rem;
  color: var(--gray);
  margin-top: 3px;
  line-height: 1.4;
}

.author-links {
  margin-top: 8px;
  font-size: 0.78rem;
}

.author-links a { color: var(--accent); margin: 0 4px; }

/* Videos */
.video-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 32px;
}

@media (max-width: 820px) {
  .video-grid { grid-template-columns: 1fr; }
}

.video-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #000;
}

.video-frame video,
.video-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.video-caption {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--gray);
}

.video-caption strong { color: var(--ink); }

/* Stat strip */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 34px;
}

@media (max-width: 820px) {
  .stat-strip { grid-template-columns: repeat(2, 1fr); }
}

.stat-box {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
}

.stat-num {
  font-family: "Fraunces", serif;
  font-size: 1.9rem;
  color: var(--ink);
  font-weight: 700;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--gray);
  margin-top: 4px;
}

/* Figure block */
.figure-block {
  margin-top: 30px;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--card-bg);
}

.figure-block img { width: 100%; }

.figure-caption {
  padding: 16px 22px 20px;
  border-top: 1px solid var(--border);
  background: #fdfbf7;
}

.figure-caption .fig-tag {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gray-light);
}

.figure-caption p {
  margin: 6px 0 0;
  font-size: 0.9rem;
  color: var(--gray);
}

/* Methodology steps */
.steps {
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

@media (max-width: 820px) {
  .steps { grid-template-columns: 1fr; }
}

.step {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px;
}

.step-num {
  font-family: "Fraunces", serif;
  color: var(--accent);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step h4 { font-size: 1rem; margin-bottom: 6px; }
.step p { font-size: 0.88rem; color: var(--gray); margin: 0; }

/* Results category cards */
.result-card {
  margin-top: 36px;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.result-head {
  padding: 24px 28px 0;
}

.result-head .eyebrow { color: var(--accent); }

.result-head h3 {
  font-size: 1.4rem;
  margin: 6px 0 10px;
}

.result-head p {
  color: var(--gray);
  text-align: justify;
  text-align-last: left;
}

.result-figure { padding: 8px 28px 28px; }

.result-figure img {
  border: 1px solid var(--border);
  border-radius: 8px;
}

.result-figure .figure-caption {
  border: none;
  padding: 14px 2px 0;
  background: transparent;
}

.finding-box {
  margin: 0 28px 26px;
  background: var(--tint);
  border: 1px solid var(--tint-border);
  border-radius: 8px;
  padding: 16px 20px;
}

.finding-box .eyebrow { color: var(--ink); font-size: 0.72rem; }
.finding-box p { margin: 6px 0 0; font-size: 0.92rem; }

/* Download cards */
.download-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 30px;
}

@media (max-width: 820px) {
  .download-grid { grid-template-columns: 1fr; }
}

.download-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.download-card .icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--tint);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 1.2rem;
}

.download-card h3 { font-size: 1.15rem; margin-bottom: 2px; }
.download-card p { color: var(--gray); font-size: 0.92rem; flex-grow: 1; }

/* Bibtex */
.bibtex-box {
  margin-top: 14px;
  background: var(--tint);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px 20px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.82rem;
  color: var(--ink);
  white-space: pre-wrap;
  word-break: break-word;
  position: relative;
}

.copy-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 5px 10px;
  cursor: pointer;
  color: var(--accent);
  font-family: "Inter", sans-serif;
}
.copy-btn:hover { background: var(--tint); }

/* Data dictionary table */
.data-table {
  margin-top: 16px;
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.data-table th, .data-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.data-table th {
  color: var(--accent);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.data-table td { color: var(--gray); }

/* Footer */
footer.site-footer {
  background: var(--ink);
  color: #e9ddc9;
  padding: 34px 0;
  margin-top: 20px;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-inner a {
  color: #e9ddc9;
  font-size: 0.85rem;
  margin-left: 18px;
}

.footer-inner a:first-of-type { margin-left: 0; }

.footer-note {
  font-size: 0.8rem;
  color: #b3a58e;
}

/* Utility */
.mt-0 { margin-top: 0; }
.text-center { text-align: center; }

/* Interactive charts (Plotly) */
.figure-block .plot { width: 100%; height: 540px; background: var(--card-bg); padding: 8px 8px 0; }
.plot-hint { margin: 0; padding: 4px 22px 10px; font-size: 0.8rem; color: var(--gray-light); background: var(--card-bg); }
@media (max-width: 640px) { .figure-block .plot { height: 420px; padding: 4px 0 0; } }