/**
 * PM SHRI SUNPURA HIGH SCHOOL — Header, Dual Logo Navigation, Container & Footer Layouts
 * Document ID: 03_DESIGN_SYSTEM / 05_DEVELOPMENT_PLAN
 */

/* Central Container */
.container {
  width: min(100% - (var(--space-4) * 2), var(--container-max-width));
  margin-inline: auto;
}

/* Background scroll prevention when mobile navigation is open */
body.nav-open {
  overflow: hidden;
}

/* Header & Official Identity Bar */
.site-header {
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-accent-provisional);
  box-shadow: var(--shadow-subtle);
  position: relative;
  z-index: 1000;
}

.header-identity-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  gap: var(--space-4);
}

/* School Primary Identity Group */
.brand-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  text-decoration: none;
  color: var(--color-primary-provisional);
}

.brand-logo {
  width: 72px;
  height: 72px;
  object-fit: contain;
  border-radius: 50%;
}

.brand-text-block {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: var(--font-size-h2);
  font-weight: 800;
  color: var(--color-primary-provisional);
  letter-spacing: -0.01em;
  line-height: 1.15;
}

.brand-subtext {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  font-weight: 600;
}

.brand-estd {
  font-size: var(--font-size-caption);
  color: var(--color-accent-dark);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* PM SHRI Official Emblem Group (Separate Asset) */
.pmshri-emblem-wrapper {
  display: flex;
  align-items: center;
}

.pmshri-logo {
  height: 64px;
  width: auto;
  object-fit: contain;
}

/* Navigation Bar Layout (Single-Level Accessible Menu) */
.nav-wrapper {
  background-color: var(--color-primary-provisional);
}

.site-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  flex-wrap: nowrap;
  justify-content: space-between;
  width: 100%;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0;
}

.nav-link {
  display: block;
  padding: var(--space-3) 0.55rem;
  color: var(--color-text-inverse);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.825rem;
  white-space: nowrap;
  transition: background-color 0.15s ease, color 0.15s ease;
  border-bottom: 3px solid transparent;
}

.nav-link:hover,
.nav-link:focus-visible {
  background-color: var(--color-primary-light);
  color: var(--color-accent-provisional);
}

.nav-link.active {
  background-color: var(--color-primary-dark);
  border-bottom-color: var(--color-accent-provisional);
  color: var(--color-text-inverse);
}

/* Mobile Nav Toggle Button */
.nav-toggle {
  display: none;
  background: transparent;
  border: 2px solid var(--color-text-inverse);
  color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-small);
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
}

/* Main Content Area */
.main-content {
  flex: 1 0 auto;
  padding-block: var(--space-8);
  outline: none;
}

/* Reusable Grid Helpers */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Site Footer Architecture */
.site-footer {
  background-color: var(--color-primary-dark);
  color: var(--color-text-inverse);
  padding-top: var(--space-10);
  padding-bottom: var(--space-6);
  border-top: 4px solid var(--color-accent-provisional);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.footer-col h3, .footer-col h4 {
  color: var(--color-accent-provisional);
  margin-bottom: var(--space-3);
}

.footer-col p, .footer-col address {
  font-style: normal;
  color: #CBD5E1;
  font-size: var(--font-size-small);
  line-height: 1.6;
}

.footer-links-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links-list li {
  margin-bottom: var(--space-2);
}

.footer-links-list a {
  color: #E2E8F0;
  text-decoration: none;
  font-size: var(--font-size-small);
}

.footer-links-list a:hover,
.footer-links-list a:focus-visible {
  color: var(--color-accent-provisional);
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid #1E293B;
  padding-top: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--font-size-small);
  color: #94A3B8;
}

.footer-policies-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-policies-nav a {
  color: #CBD5E1;
  font-size: var(--font-size-caption);
  text-decoration: none;
}

.footer-policies-nav a:hover,
.footer-policies-nav a:focus-visible {
  color: var(--color-accent-provisional);
  text-decoration: underline;
}

.last-updated-stamp {
  font-size: var(--font-size-caption);
  color: #94A3B8;
}