/* ============================================================
   SAMVIDHAN SARAL — Layout
   Header, Footer, Mobile Nav
   ============================================================ */

/* ── Site header ─────────────────────────────────────────────── */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  z-index: var(--z-nav);
  background: rgba(244,238,227,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--ease), background var(--ease);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
  background: rgba(244,238,227,0.97);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* ── Logo ────────────────────────────────────────────────────── */

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--ink);
  color: var(--gold);
  font-family: var(--font-devanagari);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--r-md);
  flex-shrink: 0;
  letter-spacing: -0.02em;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-name {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.logo-tagline {
  font-family: var(--font-ui);
  font-size: 0.625rem;
  color: var(--text-subtle);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ── Desktop nav ─────────────────────────────────────────────── */

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 0.125rem;
}

@media (max-width: 768px) {
  .desktop-nav { display: none; }
}

.nav-link {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
  padding: 0.5rem 0.75rem;
  border-radius: var(--r-md);
  transition: all var(--ease-fast);
  text-decoration: none;
  position: relative;
}

.nav-link:hover {
  color: var(--ink);
  background: rgba(26,39,68,0.05);
}

.nav-link.active {
  color: var(--ink);
  font-weight: 600;
  background: rgba(26,39,68,0.06);
}

/* ── Header actions ──────────────────────────────────────────── */

.header-right {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.hamburger-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--r-md);
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  transition: all var(--ease-fast);
}

.hamburger-btn:hover {
  background: var(--surface);
}

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

/* ── Mobile drawer nav ──────────────────────────────────────── */

.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: calc(var(--z-nav) + 1);
  opacity: 0;
  transition: opacity var(--ease);
}

.mobile-nav-overlay.open {
  display: block;
  opacity: 1;
}

.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(320px, 85vw);
  background: var(--surface);
  z-index: calc(var(--z-nav) + 2);
  transform: translateX(100%);
  transition: transform var(--ease);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.mobile-nav-drawer.open {
  transform: translateX(0);
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-5) var(--sp-6);
  border-bottom: 1px solid var(--border);
}

.mobile-nav-links {
  padding: var(--sp-4) 0;
  flex: 1;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-4) var(--sp-6);
  font-family: var(--font-ui);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  transition: background var(--ease-fast), color var(--ease-fast);
}

.mobile-nav-link:hover {
  background: var(--bg);
  color: var(--ink);
}

.mobile-nav-link.active {
  color: var(--ink);
  font-weight: 700;
  background: rgba(26,39,68,0.04);
}

/* ── Footer ──────────────────────────────────────────────────── */

.site-footer {
  background: var(--ink-dark);
  color: var(--text-on-ink-dim);
  padding: var(--sp-16) 0 var(--sp-8);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--sp-10);
  padding-bottom: var(--sp-12);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: var(--sp-8);
}

@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; gap: var(--sp-8); }
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
  text-decoration: none;
}

.footer-logo .logo-mark {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.1);
}

.footer-logo .logo-name {
  color: rgba(255,255,255,0.9);
  font-size: var(--text-lg);
}

.footer-desc {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--text-on-ink-dim);
  max-width: 300px;
  margin-bottom: var(--sp-5);
}

.footer-heading {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: var(--sp-4);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.footer-link {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--text-on-ink-dim);
  text-decoration: none;
  transition: color var(--ease-fast);
}

.footer-link:hover { color: rgba(255,255,255,0.9); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.35);
  flex-wrap: wrap;
  gap: var(--sp-3);
}

.social-icons {
  display: flex;
  gap: var(--sp-3);
}

.social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(255,255,255,0.07);
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  transition: all var(--ease-fast);
  font-size: 1rem;
}

.social-icon:hover {
  background: var(--gold);
  color: #FFFFFF;
}

/* ── Page wrapper (includes space for fixed nav) ─────────────── */

.page-main {
  padding-top: var(--nav-h);
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Announcement bar */
.announce-bar {
  position: relative;
  z-index: calc(var(--z-nav) - 1);
  padding: 0.5rem var(--sp-6);
  text-align: center;
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  background: var(--ink);
  color: rgba(255,255,255,0.9);
}

.announce-link {
  font-weight: 700;
  text-decoration: underline;
  color: var(--gold-light);
  margin-left: 0.5rem;
}