:root {
  /* Palette Light */
  --bg-main: #fcfcfc;
  --bg-surface: #ffffff;
  --bg-subtle: #f3f3f2;
  --border: #e6e6e4;
  --border-strong: #d0d0ce;

  --text-primary: #191919;
  --text-secondary: #5e5e5e;
  --text-muted: #8c8c8c;

  --gold-accent: #c5a059;
  --gold-glow: rgba(197, 160, 89, 0.15);
  --gold-hover: #b38e47;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Newsreader', Georgia, serif;

  --radius-sm: 4px;
  --radius-md: 8px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  /* Palette Dark (Notion Black / Medium Dark) */
  --bg-main: #121212;
  --bg-surface: #181818;
  --bg-subtle: #222222;
  --border: #282828;
  --border-strong: #383838;

  --text-primary: #f0f0f0;
  --text-secondary: #a0a0a0;
  --text-muted: #686868;

  --gold-accent: #d4af37;
  --gold-glow: rgba(212, 175, 55, 0.18);
  --gold-hover: #e5c158;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  font-size: 16px;
  transition: background-color 0.3s ease, color 0.3s ease;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Layout */
.app-container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px 80px 24px;
}

.app-container--post {
  max-width: 760px;
}

/* Navbar retrátil; headers internos, como .post-header, seguem o fluxo normal. */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: var(--bg-main);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
  transform: translateY(0);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.3s ease,
              border-color 0.3s ease;
  will-change: transform;
}

.site-header.is-hidden {
  transform: translateY(-100%);
}

body {
  padding-top: var(--site-header-height, 69px);
}

.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-symbol {
  color: var(--gold-accent);
  font-size: 1.1rem;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 16px;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-box input {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 6px 12px 6px 32px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  outline: none;
  width: 180px;
  transition: var(--transition);
}

.search-box input:focus {
  border-color: var(--gold-accent);
  width: 230px;
  box-shadow: 0 0 0 2px var(--gold-glow);
}

.search-icon {
  position: absolute;
  left: 10px;
  width: 14px;
  height: 14px;
  stroke: var(--text-muted);
  fill: none;
  stroke-width: 2;
}

/* Theme Toggle Switcher */
.theme-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  transition: var(--transition);
}

.theme-btn:hover {
  border-color: var(--gold-accent);
  color: var(--gold-accent);
}

/* Notion Header Profile */
.notion-header {
  margin-bottom: 48px;
}

.notion-cover {
  height: 120px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(212,175,55,0.15) 0%, rgba(18,18,12,0.8) 100%), var(--bg-subtle);
  border: 1px solid var(--border);
  position: relative;
}

.notion-profile {
  position: relative;
  z-index: 1;
  padding: 0 16px;
  margin-top: -36px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.notion-avatar {
  width: 72px;
  height: 72px;
  background: var(--bg-surface);
  border: 2px solid var(--gold-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--gold-accent);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.profile-title {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.profile-bio {
  color: var(--text-secondary);
  max-width: 620px;
  font-size: 0.95rem;
  line-height: 1.5;
}

.meta-pills {
  display: flex;
  gap: 12px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.pill {
  font-size: 0.75rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 6px;
}

.pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--gold-accent);
}

/* Filter Bar */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
  margin-bottom: 36px;
  overflow-x: auto;
}

.filter-btn {
  background: none;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
}

.filter-btn:hover {
  color: var(--text-primary);
  background: var(--bg-subtle);
}

.filter-btn.active {
  color: var(--gold-accent);
  background: var(--gold-glow);
  border-color: var(--gold-accent);
}

/* Grid Layout: Main Feed + Sidebar */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
}

/* Featured Article (Medium Style) */
.featured-card {
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

.featured-tag {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gold-accent);
  font-weight: 600;
  margin-bottom: 8px;
  display: block;
}

.featured-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 500;
  line-height: 1.25;
  margin-bottom: 12px;
  transition: var(--transition);
}

.featured-title:hover {
  color: var(--gold-accent);
}

.featured-excerpt {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Standard Article List */
.articles-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.article-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.article-card:last-child {
  border-bottom: none;
}

.article-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  line-height: 1.3;
  transition: var(--transition);
}

.article-title:hover {
  color: var(--gold-accent);
}

.article-excerpt {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
}

.action-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  transition: var(--transition);
}

.action-btn:hover {
  color: var(--gold-accent);
}

/* Utility to hide elements cleanly */
.hidden {
  display: none !important;
}

/* Sidebar (Notion Block Style) */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-block {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.sidebar-title {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-title::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--gold-accent);
  border-radius: 50%;
}

.pinned-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pinned-item {
  font-size: 0.88rem;
  line-height: 1.4;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.pinned-link {
  font-family: var(--font-serif);
  font-weight: 500;
  transition: var(--transition);
}

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

.pinned-date {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag-item {
  font-size: 0.75rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.tag-item:hover {
  border-color: var(--gold-accent);
  color: var(--gold-accent);
}

/* Footer */
footer {
  margin-top: 80px;
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ===== Post pages (templates) ===== */

.back-link {
  display: inline-block;
  margin: 24px 0 32px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: var(--transition);
}

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

.post-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.post-tema {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gold-accent);
  font-weight: 600;
  margin-bottom: 8px;
  display: block;
}

.post-tema--gold {
  color: var(--gold-accent);
}

.post-title {
  line-height: 1.2;
  margin-bottom: 12px;
}

.post-title--serif {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 500;
}

.post-title--sans {
  font-family: var(--font-sans);
  font-size: 1.9rem;
  font-weight: 600;
}

.post-title--nota {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 500;
  margin-top: 4px;
}

.post-title--manifesto {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.post-header--nota {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
  padding-bottom: 12px;
}

.post-header--manifesto {
  text-align: center;
  padding-bottom: 32px;
}

.post-date-inline {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.post-body {
  font-size: 1.02rem;
  color: var(--text-primary);
  line-height: 1.75;
}

.post-body :global(h2) {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 500;
  margin: 32px 0 12px 0;
}

.post-body :global(p) {
  margin-bottom: 16px;
  color: var(--text-secondary);
}

.post-body :global(code) {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2px 6px;
  font-size: 0.9em;
}

.post-body :global(pre) {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  overflow-x: auto;
  margin-bottom: 16px;
}

.post-body--ensaio {
  font-family: var(--font-serif);
  font-size: 1.1rem;
}

.post-body--manifesto {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}

.post-body--manifesto :global(p) {
  color: var(--text-primary);
}

.post--analise .tag-cloud {
  margin-top: 16px;
}

/* Media Queries */
@media (max-width: 850px) {
  .main-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .sidebar {
    order: 2;
  }

  .search-box input {
    width: 130px;
  }
  .search-box input:focus {
    width: 160px;
  }
}

@media (max-width: 580px) {
  .nav-inner {
    padding: 12px 16px;
  }

  .profile-title {
    font-size: 1.75rem;
  }

  .notion-cover {
    height: 90px;
  }

  .featured-title {
    font-size: 1.4rem;
  }

  .post-title--manifesto {
    font-size: 2.1rem;
  }
}