/* ============================================================
   PublicScience — style.css
   Tema: Editorial Magazine — sóbrio, tipográfico, elegante
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;0,900;1,400&family=DM+Sans:wght@300;400;500&family=DM+Mono:wght@400;500&display=swap');

/* ── Variáveis ── */
:root {
  --ink:        #111111;
  --ink-soft:   #444444;
  --ink-muted:  #888888;
  --paper:      #F8F6F1;
  --paper-alt:  #EEEAE0;
  --accent:     #C0392B;
  --accent-2:   #1A5276;
  --border:     #D6D0C4;
  --white:      #FFFFFF;
  --ff-display: 'Playfair Display', Georgia, serif;
  --ff-body:    'DM Sans', sans-serif;
  --ff-mono:    'DM Mono', monospace;
  --max-w:      1240px;
  --gap:        2rem;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--ff-body);
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }

/* ── Header ── */
.site-header {
  background: var(--paper);
  border-bottom: 2px solid var(--ink);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-top {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
}

.header-date {
  font-family: var(--ff-mono);
  font-size: 0.72rem;
  color: var(--ink-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.header-nav-top {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.header-nav-top a {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  transition: color 0.2s;
}
.header-nav-top a:hover { color: var(--accent); }

.btn-admin {
  background: var(--ink) !important;
  color: var(--paper) !important;
  padding: 0.3rem 0.85rem !important;
  border-radius: 2px;
  transition: background 0.2s !important;
}
.btn-admin:hover { background: var(--accent) !important; }

/* Brand */
.header-brand {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.brand-line {
  flex: 1;
  height: 2px;
  background: var(--ink);
}
.brand-center { text-align: center; }
.brand-tagline-top,
.brand-tagline-bottom {
  font-family: var(--ff-mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.brand-name {
  display: block;
  font-family: var(--ff-display);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--ink);
  transition: color 0.2s;
}
.brand-name:hover { color: var(--accent); }

/* Category nav */
.header-categories {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0.55rem 2rem;
  display: flex;
  gap: 0;
  border-top: 1px solid var(--border);
  overflow-x: auto;
  scrollbar-width: none;
}
.header-categories::-webkit-scrollbar { display: none; }
.cat-link {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 0.25rem 1rem;
  border-right: 1px solid var(--border);
  white-space: nowrap;
  transition: color 0.2s, background 0.2s;
}
.cat-link:first-child { padding-left: 0; }
.cat-link:hover { color: var(--accent); }

/* ── Hero ── */
.hero {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2rem 2rem 0;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--gap);
  border-bottom: 1px solid var(--border);
  padding-bottom: 2rem;
}

.hero-card {
  display: block;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--ink);
  min-height: 480px;
}
.hero-img-wrap {
  position: absolute;
  inset: 0;
}
.hero-img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.55;
  transition: opacity 0.4s, transform 0.5s;
}
.hero-card:hover .hero-img { opacity: 0.45; transform: scale(1.03); }
.hero-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.85) 40%, transparent 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  height: 100%;
  min-height: 480px;
}
.hero-tag {
  display: inline-block;
  font-family: var(--ff-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(255,255,255,0.1);
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--accent);
  margin-bottom: 0.75rem;
  width: fit-content;
}
.hero-title {
  font-family: var(--ff-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.25;
  margin-bottom: 0.75rem;
}
.hero-excerpt {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.75);
  line-height: 1.6;
  margin-bottom: 1rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.hero-meta {
  font-family: var(--ff-mono);
  font-size: 0.7rem;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.06em;
}
.hero-sep { margin: 0 0.4rem; }

/* Hero side cards */
.hero-side {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.side-card {
  background: var(--paper);
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  flex: 1;
  transition: background 0.2s;
  cursor: pointer;
}
.side-card:hover { background: var(--paper-alt); }
.side-tag {
  font-family: var(--ff-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}
.side-title {
  font-family: var(--ff-display);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.side-date {
  font-family: var(--ff-mono);
  font-size: 0.62rem;
  color: var(--ink-muted);
}

/* ── Section divider ── */
.section-divider {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.5rem 2rem 0;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.section-divider::before,
.section-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}
.section-divider span {
  font-family: var(--ff-mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
  white-space: nowrap;
}

/* ── Main + Sidebar ── */
.main-content {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.5rem 2rem 3rem;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--gap);
  align-items: start;
}

/* ── News grid ── */
.news-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--border);
}

.news-card {
  padding: 1.4rem;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  transition: background 0.2s;
  display: block;
}
.news-card:nth-child(even) { border-right: none; }
.news-card:hover { background: var(--paper-alt); }

.news-card-tag {
  font-family: var(--ff-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.news-card-title {
  font-family: var(--ff-display);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
  margin-bottom: 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s;
}
.news-card:hover .news-card-title { color: var(--accent); }
.news-card-excerpt {
  font-size: 0.82rem;
  color: var(--ink-soft);
  line-height: 1.6;
  margin-bottom: 0.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card-meta {
  font-family: var(--ff-mono);
  font-size: 0.62rem;
  color: var(--ink-muted);
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

/* ── Sidebar ── */
.sidebar { display: flex; flex-direction: column; gap: 1.5rem; }
.sidebar-widget {
  border: 1px solid var(--border);
  padding: 1.25rem;
  background: var(--white);
}
.widget-title {
  font-family: var(--ff-display);
  font-size: 1rem;
  font-weight: 700;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}
.widget-cats li { border-bottom: 1px solid var(--border); }
.widget-cats a {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  font-size: 0.82rem;
  color: var(--ink-soft);
  transition: color 0.2s;
}
.widget-cats a:hover { color: var(--accent); }
.widget-cats span { color: var(--ink-muted); font-size: 0.75rem; }

.widget-popular { counter-reset: popular; }
.widget-popular li {
  counter-increment: popular;
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border);
}
.widget-popular li::before {
  content: counter(popular, decimal-leading-zero);
  font-family: var(--ff-display);
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--paper-alt);
  line-height: 1;
  min-width: 2rem;
}
.widget-popular a {
  font-size: 0.8rem;
  font-weight: 500;
  line-height: 1.4;
  color: var(--ink);
  transition: color 0.2s;
}
.widget-popular a:hover { color: var(--accent); }

.sidebar-newsletter p {
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-bottom: 0.75rem;
}
.newsletter-form {
  display: flex;
  border: 1px solid var(--border);
}
.newsletter-form input {
  flex: 1;
  padding: 0.5rem 0.75rem;
  font-family: var(--ff-body);
  font-size: 0.82rem;
  border: none;
  background: var(--paper);
  color: var(--ink);
  outline: none;
}
.newsletter-form button {
  padding: 0.5rem 1rem;
  background: var(--ink);
  color: var(--white);
  border: none;
  cursor: pointer;
  font-size: 1rem;
  transition: background 0.2s;
}
.newsletter-form button:hover { background: var(--accent); }
.newsletter-msg {
  display: block;
  font-size: 0.75rem;
  color: var(--accent-2);
  margin-top: 0.4rem;
}

/* ── Footer ── */
.site-footer {
  background: var(--ink);
  color: var(--paper);
  border-top: 3px solid var(--accent);
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2.5rem 2rem;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
}
.footer-logo {
  font-family: var(--ff-display);
  font-size: 1.6rem;
  font-weight: 900;
  display: block;
  margin-bottom: 0.5rem;
}
.footer-brand p {
  font-size: 0.82rem;
  color: rgba(248,246,241,0.55);
}
.footer-links h4 {
  font-family: var(--ff-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(248,246,241,0.4);
  margin-bottom: 0.75rem;
}
.footer-links a {
  display: block;
  font-size: 0.85rem;
  color: rgba(248,246,241,0.75);
  margin-bottom: 0.35rem;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1rem 2rem;
  border-top: 1px solid rgba(248,246,241,0.1);
  font-family: var(--ff-mono);
  font-size: 0.65rem;
  color: rgba(248,246,241,0.35);
  letter-spacing: 0.06em;
}

/* ── Loading skeleton ── */
.skeleton {
  background: linear-gradient(90deg, var(--paper-alt) 25%, var(--border) 50%, var(--paper-alt) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: 2px;
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── Empty state ── */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem;
  color: var(--ink-muted);
  font-family: var(--ff-display);
  font-style: italic;
  font-size: 1.1rem;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-side { display: none; }
  .main-content { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .news-grid { grid-template-columns: 1fr; }
  .news-card { border-right: none; }
  .footer-inner { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .header-brand { padding: 0.75rem 1rem; }
  .hero { padding: 1rem 1rem 0; }
  .main-content { padding: 1rem 1rem 2rem; }
}