/*
 * TheChess.Art — Application Shell
 * Marketing, analyzer ve puzzle için ortak üst navigasyon ve layout iskeleti.
 */

.tca-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.tca-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(15, 15, 15, 0.92);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.tca-nav__inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 14px 32px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
}

.tca-brand {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  user-select: none;
}
.tca-brand__name {
  font-family: var(--font-serif);
  font-size: 22px;
  letter-spacing: 0.02em;
  line-height: 1;
  color: var(--primary);
}
.tca-brand__name span { color: var(--accent); }
.tca-brand__tag {
  font-size: 9px;
  font-weight: 100;
  letter-spacing: var(--letter-widest);
  text-transform: uppercase;
  color: var(--secondary);
}

.tca-nav__links {
  display: flex;
  gap: 4px;
  justify-content: center;
}
.tca-nav__link {
  padding: 8px 14px;
  font-size: 11px;
  letter-spacing: var(--letter-wide);
  text-transform: uppercase;
  color: var(--secondary);
  border-radius: var(--radius-sm);
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.tca-nav__link:hover { color: var(--primary); background: var(--panel-2); }
.tca-nav__link.is-active {
  color: var(--body);
  background: var(--primary);
  font-weight: 700;
}

.tca-nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--accent);
  color: #0a0a0a;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: var(--letter-wide);
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: background var(--t-fast), transform var(--t-fast);
}
.tca-nav__cta:hover { background: var(--accent-hot); transform: translateY(-1px); }

.tca-main { flex: 1; }

.tca-footer {
  border-top: 1px solid var(--line);
  padding: 40px 32px;
  color: var(--secondary);
  font-size: 11px;
  letter-spacing: var(--letter-wide);
}
.tca-footer__inner {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

/* Button library */
.tca-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: var(--letter-wide);
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: all var(--t-fast) var(--ease);
  cursor: pointer;
  border: 1px solid transparent;
}
.tca-btn--primary { background: var(--accent); color: #0a0a0a; }
.tca-btn--primary:hover { background: var(--accent-hot); }
.tca-btn--ghost { background: transparent; color: var(--primary); border-color: var(--line); }
.tca-btn--ghost:hover { background: var(--panel); border-color: var(--secondary); }
.tca-btn--sm { padding: 8px 14px; font-size: 11px; }
.tca-btn--lg { padding: 16px 32px; font-size: 13px; }

/* Responsive */
@media (max-width: 900px) {
  .tca-nav__inner { grid-template-columns: auto 1fr auto; padding: 12px 18px; gap: 12px; }
  .tca-nav__links { display: none; }
  .tca-footer { padding: 28px 18px; }
}