/*
 * layout.css — Header, nav, footer, and main content layout
 *
 * Mobile-first approach: nav links hidden on mobile, shown on desktop.
 * Responsive breakpoints: 480px, 768px, 1024px, 1280px.
 *
 * Requirements: 1.6, 13.4
 */

/* ============================================================
   Site-wide Banner
   ============================================================ */
.site-banner {
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
  border-bottom: 4px solid #991b1b;
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  position: relative;
  z-index: 50;
}

.site-banner__inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60px;
}

.site-banner__text {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.6;
  text-align: center;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  letter-spacing: 0.025em;
  max-width: 90%;
}

@media (min-width: 768px) {
  .site-banner {
    padding: var(--space-2xl) var(--space-xl);
  }

  .site-banner__inner {
    min-height: 80px;
  }

  .site-banner__text {
    font-size: 1.75rem;
    max-width: 85%;
  }
}

@media (min-width: 1024px) {
  .site-banner {
    padding: var(--space-2xl) var(--space-2xl);
  }

  .site-banner__inner {
    min-height: 100px;
  }

  .site-banner__text {
    font-size: 2.25rem;
    max-width: 80%;
    letter-spacing: 0.05em;
  }
}

/* ============================================================
   Site Header & Navigation
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-black);
  box-shadow: var(--shadow-md);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
  gap: var(--space-md);
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}

.nav__logo img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

/* Mobile hamburger toggle */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: var(--space-xs);
  background: transparent;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-white);
  transition: border-color var(--transition-fast);
}

.nav-toggle:focus-visible {
  outline: 3px solid var(--color-blue);
  outline-offset: 2px;
}

.nav-toggle:hover {
  border-color: rgba(255, 255, 255, 0.3);
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* Nav links — hidden on mobile by default */
.nav__links {
  display: none;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-black);
  padding: var(--space-md) var(--space-lg);
  gap: var(--space-xs);
  box-shadow: var(--shadow-md);
  list-style: none;
  margin: 0;
}

/* Open state — toggled by JS */
.nav__links.is-open {
  display: flex;
}

.nav__link {
  display: block;
  padding: var(--space-sm) var(--space-md);
  color: var(--color-white);
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
}

.nav__link:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
  text-decoration: none;
}

.nav__link:focus-visible {
  outline: 3px solid var(--color-blue);
  outline-offset: 2px;
}

.nav__link--active,
.nav__link[aria-current="page"] {
  color: var(--color-blue-light, #3a72c0);
  background-color: rgba(46, 95, 163, 0.15);
}

/* ============================================================
   Main Content
   ============================================================ */
main {
  min-height: calc(100vh - 80px - 200px); /* viewport minus header and footer */
}

.page-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
}

/* ============================================================
   Site Footer
   ============================================================ */
.site-footer {
  background-color: var(--color-black);
  color: var(--color-white);
  padding: var(--space-2xl) var(--space-lg) var(--space-lg);
  margin-top: auto;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  max-width: 1280px;
  margin: 0 auto var(--space-xl);
}

.footer__heading {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.footer__contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__item {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 0;
}

.footer__label {
  font-weight: 600;
  color: var(--color-white);
}

.footer__item a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__item a:hover {
  color: var(--color-white);
  text-decoration: underline;
}

.footer__social {
  display: flex;
  flex-direction: column;
}

.footer__social-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer__social-link {
  display: inline-block;
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__social-link:hover {
  color: var(--color-white);
  text-decoration: underline;
}

.footer__social-link:focus-visible {
  outline: 3px solid var(--color-blue);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.footer__copyright {
  max-width: 1280px;
  margin: 0 auto;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  text-align: center;
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.5);
}

.footer__copyright p {
  margin-bottom: 0;
}

/* ============================================================
   Responsive Breakpoints — Mobile-first
   ============================================================ */

/* 480px — small phones landscape */
@media (min-width: 480px) {
  .nav {
    padding: var(--space-md) var(--space-xl);
  }
}

/* 768px — tablets */
@media (min-width: 768px) {
  /* Show nav links inline, hide hamburger */
  .nav-toggle {
    display: none;
  }

  .nav__links {
    display: flex;
    flex-direction: row;
    position: static;
    background: transparent;
    padding: 0;
    gap: var(--space-xs);
    box-shadow: none;
  }

  .nav__link {
    padding: var(--space-xs) var(--space-sm);
  }

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

/* 1024px — small desktops */
@media (min-width: 1024px) {
  .nav {
    padding: var(--space-md) var(--space-2xl);
  }

  .nav__link {
    padding: var(--space-sm) var(--space-md);
  }

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

  .site-footer {
    padding: var(--space-3xl) var(--space-2xl) var(--space-xl);
  }
}

/* 1280px — wide desktops */
@media (min-width: 1280px) {
  .nav {
    padding: var(--space-md) var(--space-3xl);
  }
}

/* ============================================================
   Dark Mode Support for Layout
   ============================================================ */
@media (prefers-color-scheme: dark) {
  /* Navigation stays dark in both modes - no change needed */
  .site-header {
    background-color: #1a1a1a;
  }

  .nav {
    background-color: #1a1a1a;
  }

  .nav__links {
    background-color: #1a1a1a;
  }

  /* Footer stays dark in both modes - no change needed */
  .site-footer {
    background-color: #1a1a1a;
  }

  /* Banner - keep red but ensure white text is visible */
  .site-banner__text {
    color: #ffffff;
  }
}