/* ============================================================
   The Peak Buzz — Global Stylesheet
   Design: Modern news / editorial, mobile-first
   ============================================================ */

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

:root {
  --color-accent:   #e63946;
  --color-accent-h: #c1121f;
  --color-dark:     #0d1117;
  --color-mid:      #1c2128;
  --color-surface:  #ffffff;
  --color-muted:    #6e7681;
  --color-border:   #e5e7eb;
  --color-text:     #1a1a2e;
  --color-text-sub: #4b5563;

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-serif: 'Merriweather', Georgia, serif;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;

  --shadow-card: 0 2px 8px rgba(0,0,0,0.08), 0 0 1px rgba(0,0,0,0.06);
  --shadow-card-h: 0 8px 24px rgba(0,0,0,0.12), 0 0 1px rgba(0,0,0,0.08);

  --max-w: 1200px;
  --gutter: clamp(16px, 4vw, 32px);
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: #f6f8fa;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ── Header ─────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-dark);
  border-bottom: 3px solid var(--color-accent);
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 60px;
}

.site-logo {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.5px;
  white-space: nowrap;
  flex-shrink: 0;
}
.logo-peak { color: #ffffff; }
.logo-buzz { color: var(--color-accent); }

.main-nav {
  display: flex;
  gap: 4px;
  align-items: center;
  flex-wrap: wrap;
}
.main-nav a {
  color: #c9d1d9;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
}
.main-nav a:hover {
  color: #fff;
  background: rgba(255,255,255,0.08);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  margin-left: auto;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

/* ── Hero ────────────────────────────────────────────────────── */
.hero {
  background: var(--color-dark);
  margin-bottom: 48px;
}
.hero-link {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 480px;
  text-decoration: none;
}
.hero-image-wrap { overflow: hidden; }
.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.hero-link:hover .hero-image { transform: scale(1.03); }

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(24px, 5vw, 56px);
  color: #fff;
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  line-height: 1.25;
  margin: 12px 0;
  letter-spacing: -0.3px;
}
.hero-excerpt {
  font-size: 1rem;
  color: #c9d1d9;
  line-height: 1.6;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.hero-meta {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
  color: #8b949e;
}

/* ── Category Badge ──────────────────────────────────────────── */
.cat-badge {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
}
.cat-badge--hero {
  font-size: 0.75rem;
  padding: 4px 12px;
  margin-bottom: 8px;
}

/* ── Article Grid ────────────────────────────────────────────── */
.section-articles { padding-bottom: 64px; }

.section-title {
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-muted);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: box-shadow 0.2s, transform 0.2s;
}
.card:hover {
  box-shadow: var(--shadow-card-h);
  transform: translateY(-2px);
}
.card-link { display: block; }

.card-image-wrap {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}
.card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.card:hover .card-image { transform: scale(1.04); }

.card-image-wrap .cat-badge {
  position: absolute;
  top: 12px;
  left: 12px;
}

.card-body { padding: 16px 20px 20px; }

.card-title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 8px;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.15s;
}
.card:hover .card-title { color: var(--color-accent); }

.card-excerpt {
  font-size: 0.875rem;
  color: var(--color-text-sub);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--color-muted);
}

.article-source { font-weight: 600; }

/* ── Article Page ────────────────────────────────────────────── */
.article-page { padding: 32px 0 64px; }

.article-container { max-width: 820px; }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--color-accent); }
.breadcrumb a:hover { text-decoration: underline; }

.article-header { margin-bottom: 28px; }

.article-header .cat-badge { margin-bottom: 14px; }

.article-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  line-height: 1.25;
  letter-spacing: -0.3px;
  margin-bottom: 16px;
  color: var(--color-dark);
}

.article-excerpt {
  font-size: 1.1rem;
  color: var(--color-text-sub);
  line-height: 1.6;
  margin-bottom: 16px;
  font-style: italic;
}

.article-byline {
  display: flex;
  gap: 20px;
  align-items: center;
  font-size: 0.82rem;
  color: var(--color-muted);
  flex-wrap: wrap;
}
.article-byline a { color: var(--color-accent); }
.article-byline a:hover { text-decoration: underline; }

.article-figure {
  margin: 0 0 32px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.article-hero-img {
  width: 100%;
  height: auto;
  aspect-ratio: 1200/630;
  object-fit: cover;
}
.article-figure figcaption {
  font-size: 0.78rem;
  color: var(--color-muted);
  padding: 8px 16px;
  background: #f6f8fa;
}
.article-figure figcaption a { color: var(--color-accent); }

/* Article body typography */
.article-body {
  font-family: var(--font-serif);
  font-size: 1.08rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 32px;
}
.article-body p { margin-bottom: 1.4em; }
.article-body strong { font-weight: 700; color: var(--color-dark); }
.article-body em { font-style: italic; }
.article-body ul, .article-body ol { margin: 1em 0 1.4em 1.5em; }
.article-body li { margin-bottom: 0.5em; }
.article-body a { color: var(--color-accent); text-decoration: underline; }

/* Tags */
.article-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.tag {
  background: #f0f2f4;
  color: var(--color-text-sub);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 99px;
}

/* Share row */
.share-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-muted);
  padding: 20px;
  background: #f0f2f4;
  border-radius: var(--radius-md);
}
.share-btn {
  display: inline-block;
  padding: 7px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 700;
  transition: opacity 0.15s, transform 0.15s;
  color: #fff;
}
.share-btn:hover { opacity: 0.85; transform: translateY(-1px); }
.share-btn--twitter  { background: #000000; }
.share-btn--facebook { background: #1877f2; }
.share-btn--linkedin { background: #0a66c2; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.9rem;
  transition: gap 0.15s;
}
.back-link:hover { gap: 10px; text-decoration: underline; }

/* ── Category Header ─────────────────────────────────────────── */
.category-header {
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 3px solid var(--color-accent);
}
.category-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--color-dark);
  margin-bottom: 6px;
}
.category-subtitle {
  color: var(--color-muted);
  font-size: 1rem;
}

/* ── 404 ─────────────────────────────────────────────────────── */
.not-found {
  min-height: 60vh;
  display: flex;
  align-items: center;
}
.not-found-inner { text-align: center; }
.not-found-code {
  font-size: clamp(5rem, 15vw, 10rem);
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 16px;
  opacity: 0.2;
}
.not-found-title {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 12px;
}
.not-found p { color: var(--color-muted); margin-bottom: 28px; }

/* ── Empty state ─────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--color-muted);
}
.empty-state p { margin-bottom: 20px; font-size: 1.1rem; }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-weight: 700;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  transition: background 0.15s, transform 0.15s;
}
.btn:hover { background: var(--color-accent-h); transform: translateY(-1px); }
.btn--large { padding: 16px 36px; font-size: 1.05rem; }

/* ── Author styles ───────────────────────────────────────────── */
.author-link {
  color: var(--color-accent);
  text-decoration: none;
}
.author-link:hover { text-decoration: underline; }
.author-link strong u { color: var(--color-accent); }

.author-title-tag {
  color: var(--color-muted);
  font-size: 0.82rem;
}

.author-page { padding: 40px 0 64px; }

.author-profile {
  display: flex;
  gap: 28px;
  align-items: flex-start;
  padding: 32px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  margin-bottom: 40px;
}

.author-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 3px solid var(--color-accent);
}

.author-name {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.author-role {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-bottom: 10px;
}

.author-bio {
  font-size: 0.95rem;
  color: var(--color-text-sub);
  line-height: 1.6;
  margin-bottom: 12px;
}

.author-twitter {
  display: inline-block;
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.85rem;
}
.author-twitter:hover { text-decoration: underline; }

.author-articles-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
}
.author-articles-header h2 {
  font-size: 1.2rem;
  font-weight: 700;
}
.article-count {
  font-size: 0.82rem;
  color: var(--color-muted);
  background: #f0f2f4;
  padding: 3px 10px;
  border-radius: 99px;
}

@media (max-width: 480px) {
  .author-profile { flex-direction: column; align-items: center; text-align: center; }
}

/* ── Footer ─────────────────────────────────────────────────── */
.site-footer {
  background: var(--color-dark);
  color: #8b949e;
  padding: 40px 0 32px;
  margin-top: auto;
}
.footer-inner {
  display: grid;
  gap: 24px;
}
.footer-brand .site-logo { margin-bottom: 8px; }
.footer-brand p { font-size: 0.875rem; color: #6e7681; }

.footer-nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-nav a {
  color: #8b949e;
  font-size: 0.85rem;
  font-weight: 600;
  transition: color 0.15s;
}
.footer-nav a:hover { color: #fff; }

.footer-legal {
  font-size: 0.78rem;
  color: #6e7681;
}
.footer-legal a { color: var(--color-accent); margin-left: 12px; }

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 768px) {
  .hero-link {
    grid-template-columns: 1fr;
    min-height: auto;
  }
  .hero-image-wrap { aspect-ratio: 16/9; }
  .hero-content { padding: 24px; }
  .hero-title { font-size: 1.5rem; }

  .main-nav { display: none; flex-direction: column; width: 100%; }
  .main-nav.is-open {
    display: flex;
    position: absolute;
    top: 63px;
    left: 0;
    right: 0;
    background: var(--color-dark);
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 12px 16px;
    gap: 4px;
  }
  .main-nav.is-open a { padding: 10px 12px; }
  .nav-toggle { display: flex; }
  .header-inner { position: relative; }

  .article-grid { grid-template-columns: 1fr; }

  .article-container { padding-inline: var(--gutter); }
}

@media (max-width: 480px) {
  .share-row { flex-direction: column; align-items: flex-start; }
}

/* ── Scroll animations (subtle) ──────────────────────────────── */
@media (prefers-reduced-motion: no-preference) {
  .card {
    animation: fadeUp 0.4s ease both;
  }
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
  }
}