/* ===== COSTA Industries — Shared Component Styles ===== */
/* Header, Footer, Nav Drawer — extracted from styles.css */

/* ===== SKIP LINK ===== */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 9999;
  background: var(--accent-primary);
  color: white;
  padding: var(--space-3) var(--space-5);
  border-radius: 0 0 8px 8px;
  font-weight: 600;
  font-size: var(--text-sm);
  text-decoration: none;
  transition: top var(--duration-fast);
}

.skip-link:focus {
  top: 0;
}

/* ===== HEADER ===== */
.header {
  background: var(--bg-primary);
  border-bottom: 1px solid rgba(226, 213, 197, 0.3);
  padding: var(--space-4) var(--space-6);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: all var(--duration-slow) var(--ease-elegant);
}

[data-theme='dark'] .header {
  background: rgba(15, 20, 25, 0.95);
  border-bottom: 1px solid rgba(58, 63, 74, 0.5);
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ===== LOGO ===== */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: inherit;
}

.logo-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: white;
  box-shadow: var(--shadow-md);
  transition: transform var(--duration-medium) var(--ease-elegant);
  flex-shrink: 0;
}

.logo:hover .logo-icon {
  transform: scale(1.05);
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-main {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: 2px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-sub {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 300;
  letter-spacing: 3px;
  color: var(--text-secondary);
  text-transform: uppercase;
}

/* ===== MAIN NAV ===== */
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: var(--text-sm);
  letter-spacing: 0.5px;
  transition: color var(--duration-fast) var(--ease-elegant);
  position: relative;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-primary);
  transition: width var(--duration-medium) var(--ease-elegant);
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link-primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  padding: var(--space-2) var(--space-5);
  border-radius: 24px;
  font-weight: 600;
}

.nav-link-primary::after {
  display: none;
}

.nav-link-primary:hover {
  color: white;
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}

.nav-link-login {
  background: transparent;
  border: 2px solid var(--accent-primary);
  color: var(--accent-primary);
  padding: var(--space-2) var(--space-5);
  border-radius: 24px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: var(--font-body);
  font-size: var(--text-sm);
}

.nav-link-login::after {
  display: none;
}

.nav-link-login:hover {
  background: var(--accent-primary);
  color: white;
  transform: scale(1.05);
}

.nav-link-profile {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--bg-tertiary);
  padding: var(--space-2) var(--space-4);
  border-radius: 24px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.nav-link-profile::after {
  display: none;
}

.nav-link-profile:hover {
  background: var(--accent-primary);
  color: white;
  transform: scale(1.05);
}

.user-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  font-size: 1.2rem;
}

/* ===== HAMBURGER BUTTON ===== */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: 8px;
  transition: background-color var(--duration-fast) var(--ease-elegant);
}

.nav-hamburger:hover {
  background: var(--bg-tertiary);
}

.nav-hamburger .bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition:
    transform var(--duration-medium) var(--ease-elegant),
    opacity var(--duration-fast);
}

.nav-hamburger[aria-expanded='true'] .bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-hamburger[aria-expanded='true'] .bar:nth-child(2) {
  opacity: 0;
}

.nav-hamburger[aria-expanded='true'] .bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== MOBILE DRAWER ===== */
.nav-drawer {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(280px, 85vw);
  background: var(--bg-secondary);
  box-shadow: var(--shadow-xl);
  z-index: 1100;
  padding: var(--space-8) var(--space-6) var(--space-6);
  flex-direction: column;
  gap: var(--space-4);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--duration-medium) var(--ease-elegant);
}

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

.nav-drawer-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: var(--text-xl);
  color: var(--text-secondary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-drawer-close:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.nav-drawer-title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  padding-top: var(--space-4);
  border-bottom: 1px solid var(--divider);
  padding-bottom: var(--space-4);
}

.nav-drawer .nav-link {
  font-size: var(--text-base);
  padding: var(--space-3) var(--space-2);
  border-radius: 8px;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.nav-drawer .nav-link:hover {
  background: var(--bg-tertiary);
}

.nav-drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 1099;
  backdrop-filter: blur(2px);
}

.nav-drawer-overlay.open {
  display: block;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--divider);
  padding: var(--space-6) 0 var(--space-4);
}

.footer--minimal {
  padding: var(--space-4) 0;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
  gap: var(--space-5);
}

.footer-brand .logo {
  margin-bottom: var(--space-2);
}

.footer-tagline {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  font-style: italic;
}

/* Two-column layout for full footer variant */
.footer-content--two-col {
  align-items: flex-start;
}

.footer-columns {
  display: flex;
  gap: var(--space-6);
}

.footer-column {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-column-title {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.footer-column nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.footer-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: color var(--duration-fast) var(--ease-elegant);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.footer-link:hover {
  color: var(--accent-primary);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-4);
  border-top: 1px solid var(--divider);
}

.footer-bottom--standalone {
  border-top: none;
  padding-top: 0;
}

.footer-bottom p {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-bottom: var(--space-1);
}

.footer-author {
  font-weight: 600;
  color: var(--text-secondary);
}

/* App footer: hidden on desktop (doctor-ai full-height app) */
.footer--app-hidden {
  display: none;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .header {
    padding: var(--space-3) var(--space-4);
  }

  .header-content {
    flex-wrap: nowrap;
    gap: var(--space-2);
  }

  .nav-hamburger {
    display: flex;
  }

  .nav {
    flex-wrap: nowrap;
    gap: var(--space-2);
    justify-content: flex-end;
    align-items: center;
  }

  /* Hide plain nav links on mobile — they live in the drawer */
  .nav .nav-link:not(.nav-link-primary):not(.nav-link-profile):not(.nav-link-login) {
    display: none;
  }

  /* Hide username in profile link — keep avatar only */
  #userName {
    display: none;
  }

  /* Show minimal footer on mobile regardless of variant */
  .footer--app-hidden {
    display: block;
  }

  .footer {
    padding: var(--space-4) 0 var(--space-3);
  }

  .footer--minimal {
    padding: var(--space-3) 0;
  }

  .footer-content--two-col {
    flex-direction: column;
  }

  .footer-columns {
    gap: var(--space-4);
  }

  .footer-bottom {
    padding-top: var(--space-3);
  }
}

@media (max-width: 480px) {
  .footer-columns {
    flex-direction: column;
    gap: var(--space-3);
  }
}