/* ══════════════════════════════════════════════════════════════
   VeryChess — Main Stylesheet
   verychess.org
════════════════════════════════════════════════════════════════ */

/* ── Design tokens ─────────────────────────────────────────── */
:root {
  --color-bg:           #f8f7f3;
  --color-surface:      #ffffff;
  --color-surface-alt:  #f0ede5;
  --color-text:         #1f2933;
  --color-muted:        #687385;
  --color-border:       #d9dee7;
  --color-primary:      #244c3a;
  --color-primary-dark: #163326;
  --color-primary-mid:  #2d6148;
  --color-accent:       #c99a2e;
  --color-accent-bg:    #fdf6e3;
  --color-win:          #1a6e3c;
  --color-loss:         #b91c1c;

  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;

  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,.10);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--color-primary); }
a:hover { color: var(--color-primary-mid); }

h1, h2, h3, h4 {
  line-height: 1.25;
  font-weight: 700;
  color: var(--color-text);
}
h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); margin-bottom: var(--space-md); }
h2 { font-size: clamp(1.2rem, 3vw, 1.6rem); margin-bottom: var(--space-md); }
h3 { font-size: 1.1rem; margin-bottom: var(--space-sm); }

p { margin-bottom: var(--space-md); }
p:last-child { margin-bottom: 0; }

ul, ol { padding-left: var(--space-lg); }
li { margin-bottom: var(--space-xs); }

/* ── Layout ─────────────────────────────────────────────────── */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.page-body { padding: var(--space-xl) 0 var(--space-3xl); }

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s, opacity 0.15s;
  white-space: nowrap;
  line-height: 1.4;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn-primary:hover { background: #b8881e; border-color: #b8881e; color: #fff; }
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary); color: #fff; }
.btn-outline-white {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.6);
}
.btn-outline-white:hover { background: rgba(255,255,255,0.15); color: #fff; }
.btn-sm { padding: 6px 14px; font-size: 0.82rem; }

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.badge-stable      { background: #d1fae5; color: #065f46; }
.badge-dev         { background: #dbeafe; color: #1e40af; }
.badge-experimental{ background: #fef3c7; color: #92400e; }
.badge-testing     { background: #e0e7ff; color: #3730a3; }
.badge-achievement { background: var(--color-accent-bg); color: #7a5c0a; }

/* ── Section heading ────────────────────────────────────────── */
.section-heading {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.section-heading .section-icon { opacity: 0.7; font-size: 0.9em; }

/* ── Page header (inner pages) ──────────────────────────────── */
.page-header {
  background: var(--color-primary);
  padding: var(--space-2xl) 0;
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute; inset: 0;
  background-image: repeating-conic-gradient(
    rgba(255,255,255,0.03) 0% 25%, transparent 0% 50%
  );
  background-size: 40px 40px;
}
.page-header .container { position: relative; }
.page-header h1 {
  color: #fff;
  margin-bottom: var(--space-sm);
}
.page-header p {
  color: rgba(255,255,255,0.75);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0;
}

/* ── Breadcrumb ─────────────────────────────────────────────── */
.breadcrumb {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.breadcrumb a { color: rgba(255,255,255,0.7); text-decoration: none; }
.breadcrumb a:hover { color: #fff; text-decoration: underline; }
.breadcrumb .sep { opacity: 0.5; }

/* ── Cards (generic) ────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.card-body { padding: var(--space-lg); }

/* ── Card grid ──────────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}
.card-grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: var(--space-lg);
}

/* ── Release card ───────────────────────────────────────────── */
.release-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-xl);
  overflow: hidden;
}
.release-card-header {
  padding: var(--space-lg);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
  border-bottom: 1px solid var(--color-border);
}
.release-card-header h2 {
  margin: 0;
  font-size: 1.3rem;
}
.release-meta {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: 4px;
}
.release-card-body { padding: var(--space-lg); }
.release-card-body h3 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-muted);
  margin-bottom: var(--space-sm);
  margin-top: var(--space-lg);
}
.release-card-body h3:first-child { margin-top: 0; }
.release-card-body ul { color: var(--color-text); }
.release-card-footer {
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface-alt);
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  align-items: center;
}

/* ── Tournament list card ───────────────────────────────────── */
.tournament-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.15s, border-color 0.15s;
}
.tournament-card:hover {
  box-shadow: var(--shadow-md);
  border-top-color: var(--color-primary);
  color: inherit;
}
.tournament-card-body { padding: var(--space-lg); flex: 1; }
.tournament-card h3 { margin-bottom: var(--space-xs); font-size: 1.05rem; }
.tournament-card .t-meta {
  font-size: 0.82rem;
  color: var(--color-muted);
  margin-bottom: var(--space-sm);
}
.tournament-card p { font-size: 0.9rem; color: var(--color-muted); }
.tournament-card-footer {
  padding: var(--space-sm) var(--space-lg);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-alt);
  font-size: 0.82rem;
  color: var(--color-primary);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.result-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: #d1fae5;
  color: #065f46;
  border-radius: 100px;
  padding: 2px 10px;
  font-size: 0.78rem;
  font-weight: 700;
}

/* ── Achievement card ───────────────────────────────────────── */
.achievement-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--space-lg);
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}
.achievement-icon {
  font-size: 2rem;
  line-height: 1;
  flex-shrink: 0;
  width: 48px;
  text-align: center;
}
.achievement-card h3 { margin-bottom: var(--space-xs); }
.achievement-card .ach-meta {
  font-size: 0.82rem;
  color: var(--color-muted);
  margin-bottom: var(--space-sm);
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.achievement-card p { font-size: 0.9rem; }
.achievement-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* ── Engine card ────────────────────────────────────────────── */
.engine-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.engine-card-head {
  background: var(--color-primary);
  padding: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}
.engine-icon-box {
  width: 52px; height: 52px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--color-accent);
  flex-shrink: 0;
}
.engine-card-head h3 {
  color: #fff;
  margin: 0;
  font-size: 1rem;
}
.engine-card-head .engine-version {
  color: rgba(255,255,255,0.6);
  font-size: 0.8rem;
  margin-top: 2px;
}
.engine-card-body { padding: var(--space-lg); flex: 1; }
.engine-card-body p { font-size: 0.88rem; color: var(--color-muted); }
.engine-meta-table { width: 100%; font-size: 0.82rem; border-collapse: collapse; margin-top: var(--space-sm); }
.engine-meta-table th {
  text-align: left;
  color: var(--color-muted);
  font-weight: 600;
  padding: 4px 0;
  width: 90px;
  vertical-align: top;
}
.engine-meta-table td {
  padding: 4px 0;
  color: var(--color-text);
}
.engine-card-footer {
  padding: var(--space-sm) var(--space-lg);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-alt);
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* ── Blog card ──────────────────────────────────────────────── */
.blog-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: box-shadow 0.15s;
}
.blog-card:hover { box-shadow: var(--shadow-md); color: inherit; }
.blog-card-image {
  background: var(--color-primary);
  background-image: repeating-conic-gradient(
    rgba(255,255,255,0.04) 0% 25%, transparent 0% 50%
  );
  background-size: 32px 32px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--color-accent);
}
.blog-card-body { padding: var(--space-lg); flex: 1; }
.blog-card .post-meta {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-bottom: var(--space-sm);
  display: flex;
  gap: var(--space-md);
  align-items: center;
  flex-wrap: wrap;
}
.blog-card h3 { margin-bottom: var(--space-sm); font-size: 1.05rem; }
.blog-card p { font-size: 0.88rem; color: var(--color-muted); }
.blog-card-footer {
  padding: var(--space-sm) var(--space-lg);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-alt);
  font-size: 0.82rem;
  color: var(--color-primary);
  font-weight: 600;
}

/* ── Blog post page ─────────────────────────────────────────── */
.post-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--space-2xl);
  align-items: start;
}
.post-header { margin-bottom: var(--space-xl); }
.post-header h1 { margin-bottom: var(--space-sm); }
.post-meta-bar {
  font-size: 0.85rem;
  color: var(--color-muted);
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
  align-items: center;
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}
.post-body h2 {
  font-size: 1.2rem;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
  color: var(--color-primary);
}
.post-body h3 {
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}
.post-body figure {
  margin: var(--space-lg) 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.post-body figcaption {
  padding: var(--space-sm) var(--space-md);
  font-size: 0.82rem;
  color: var(--color-muted);
  background: var(--color-surface-alt);
  text-align: center;
}
.post-sidebar .sidebar-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
}
.post-sidebar .sidebar-card h4 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-muted);
  margin-bottom: var(--space-sm);
}
.post-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  font-size: 0.88rem;
}

/* ── Hero (home page) ───────────────────────────────────────── */
.hero {
  background: var(--color-primary);
  position: relative;
  overflow: hidden;
  padding: var(--space-3xl) 0;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image: repeating-conic-gradient(
    rgba(255,255,255,0.035) 0% 25%, transparent 0% 50%
  );
  background-size: 40px 40px;
}
.hero .container { position: relative; }
.hero-inner {
  max-width: 640px;
}
.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}
.hero h1 {
  color: #fff;
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: var(--space-md);
}
.hero p {
  color: rgba(255,255,255,0.8);
  font-size: 1.1rem;
  max-width: 540px;
  margin-bottom: var(--space-xl);
}
.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.hero-chess-symbol {
  position: absolute;
  right: -20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: clamp(120px, 20vw, 220px);
  color: rgba(255,255,255,0.04);
  line-height: 1;
  user-select: none;
  pointer-events: none;
}

/* ── 404 / error page ───────────────────────────────────────── */
.error-page {
  text-align: center;
  padding: var(--space-3xl) 0;
}
.error-symbol {
  font-size: clamp(64px, 14vw, 120px);
  line-height: 1;
  color: var(--color-primary);
  opacity: 0.85;
}
.error-code {
  font-size: clamp(3.5rem, 12vw, 6rem);
  font-weight: 800;
  line-height: 1;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  margin-top: var(--space-sm);
}
.error-page h1 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  margin: var(--space-sm) 0 var(--space-md);
}
.error-text {
  max-width: 520px;
  margin: 0 auto var(--space-xl);
  color: var(--color-muted);
  font-size: 1.05rem;
}
.error-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-2xl);
}
.error-links p {
  color: var(--color-muted);
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
}
.error-links ul {
  list-style: none;
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  flex-wrap: wrap;
  padding: 0;
}

/* ── Home section ───────────────────────────────────────────── */
.home-section {
  padding: var(--space-2xl) 0;
}
.home-section + .home-section {
  border-top: 1px solid var(--color-border);
}
.home-section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}
.home-section-header h2 { margin: 0; }
.home-section-header a { font-size: 0.88rem; font-weight: 600; }

/* ── Goals list ─────────────────────────────────────────────── */
.goals-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-md);
}
.goals-list li {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: 0.9rem;
}
.goals-list li::before {
  content: '♟';
  color: var(--color-accent);
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ── Explore grid (home page) ───────────────────────────────── */
.explore-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--space-md);
}
.explore-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transition: box-shadow 0.15s, border-color 0.15s;
}
.explore-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  color: inherit;
}
.explore-card .explore-icon {
  font-size: 1.8rem;
  line-height: 1;
}
.explore-card h3 { font-size: 0.95rem; margin: 0; }
.explore-card p { font-size: 0.8rem; color: var(--color-muted); margin: 0; }

/* ── About page ─────────────────────────────────────────────── */
.about-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--space-2xl);
  align-items: start;
}
.about-section {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}
.about-section:last-child { border-bottom: none; }
.about-section h2 {
  font-size: 1.2rem;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}
.profile-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: sticky;
  top: 80px;
}
.profile-card-head {
  background: var(--color-primary);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  background-image: repeating-conic-gradient(
    rgba(255,255,255,0.04) 0% 25%, transparent 0% 50%
  );
  background-size: 32px 32px;
}
.profile-avatar {
  width: 80px; height: 80px;
  background: rgba(255,255,255,0.12);
  border: 2px solid rgba(255,255,255,0.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  margin: 0 auto var(--space-sm);
  color: var(--color-accent);
}
.profile-card-head h3 { color: #fff; font-size: 1.1rem; margin: 0; }
.profile-card-head p { color: rgba(255,255,255,0.65); font-size: 0.82rem; margin: 4px 0 0; }
.profile-card-links { padding: var(--space-md); }
.profile-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  font-size: 0.88rem;
  color: var(--color-text);
  transition: color 0.15s;
}
.profile-link:last-child { border-bottom: none; }
.profile-link:hover { color: var(--color-primary); }
.profile-link-icon { width: 20px; text-align: center; font-size: 1rem; }
.profile-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

/* ── Key-value info table ───────────────────────────────────── */
.info-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.info-table th {
  text-align: left;
  padding: 8px 12px;
  background: var(--color-surface-alt);
  color: var(--color-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  width: 180px;
  border-bottom: 1px solid var(--color-border);
}
.info-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}
.info-table tr:last-child th,
.info-table tr:last-child td { border-bottom: none; }

/* ── Table wrapper (scroll) ─────────────────────────────────── */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  -webkit-overflow-scrolling: touch;
}

/* ── Callout box ────────────────────────────────────────────── */
.callout {
  background: var(--color-accent-bg);
  border: 1px solid #e8d08a;
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: var(--space-md) var(--space-lg);
  font-size: 0.9rem;
}
.callout-info {
  background: #eff6ff;
  border-color: #bfdbfe;
  border-left-color: #3b82f6;
}

/* ── Site header ────────────────────────────────────────────── */
.site-header {
  background: var(--color-primary);
  height: 64px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,.25);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  flex-shrink: 0;
}
.logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.02em;
}
.logo-icon { flex-shrink: 0; }

/* ── Navigation ─────────────────────────────────────────────── */
.main-nav ul {
  display: flex;
  list-style: none;
  padding: 0;
  margin: 0;
  gap: 2px;
}
.main-nav a {
  display: block;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}
.main-nav a:hover,
.main-nav a[aria-current="page"] {
  background: rgba(255,255,255,0.12);
  color: #fff;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

/* ── Footer ─────────────────────────────────────────────────── */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.75);
  margin-top: var(--space-3xl);
  font-size: 0.9rem;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-xl);
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}
.footer-brand .footer-logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  display: block;
  margin-bottom: var(--space-sm);
}
.footer-brand p { color: rgba(255,255,255,0.55); font-size: 0.88rem; }
.footer-nav h3,
.footer-links h3 {
  color: rgba(255,255,255,0.45);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}
.footer-nav ul,
.footer-links ul { list-style: none; padding: 0; }
.footer-nav a,
.footer-links a {
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  line-height: 2.1;
  font-size: 0.88rem;
  display: block;
}
.footer-nav a:hover,
.footer-links a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: var(--space-md) 0;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
}
.footer-bottom a { color: rgba(255,255,255,0.55); }
.footer-bottom a:hover { color: #fff; }

/* ── Utility ────────────────────────────────────────────────── */
.text-muted  { color: var(--color-muted); }
.text-accent { color: var(--color-accent); }
.mt-xl  { margin-top: var(--space-xl); }
.mb-xl  { margin-bottom: var(--space-xl); }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .post-layout,
  .about-layout {
    grid-template-columns: 1fr;
  }
  .profile-card { position: static; }
  .post-sidebar { order: -1; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-primary-dark);
    padding: var(--space-md);
    box-shadow: 0 4px 12px rgba(0,0,0,.3);
    z-index: 99;
  }
  .main-nav.is-open { display: block; }
  .main-nav ul { flex-direction: column; gap: 2px; }
  .main-nav a { padding: 10px 14px; font-size: 0.95rem; }

  .footer-inner { grid-template-columns: 1fr; gap: var(--space-lg); }
  .hero-chess-symbol { display: none; }

  .card-grid-2 { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-md); }
  .hero { padding: var(--space-2xl) 0; }
  .release-card-header { flex-direction: column; gap: var(--space-sm); }
}