/* ============================================================================
   HEADER UNIFICADO - Professional Enhanced Styles
   ============================================================================ */

/* === NAVBAR BASE === */
.navbar {
  background: rgba(10, 15, 22, 0.95);
  backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--border);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition-slow);
  border-image: linear-gradient(90deg, var(--brand-pale), var(--border)) 1;
}

.navbar::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brand-accent), transparent);
  opacity: 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(10, 15, 22, 0.98);
  box-shadow: var(--shadow-xl);
  border-bottom-color: var(--brand-accent);
}

.navbar.scrolled::before {
  opacity: 1;
}

.navbar.nav-hidden {
  transform: translateY(-100%);
}

/* === NAV CONTAINER === */
.nav-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

/* === LOGO === */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 900;
  font-size: 1.6rem;
  transition: var(--transition);
  position: relative;
  z-index: 2;
}

.nav-logo:hover {
  transform: scale(1.03);
}

.logo-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-light) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-brand);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.logo-icon::before {
  content: '';
  position: absolute;
  inset: -3px;
  background: linear-gradient(45deg, var(--brand), var(--brand-light), var(--brand));
  border-radius: 50%;
  z-index: -1;
  opacity: 0;
  transition: var(--transition);
}

.logo-icon:hover {
  transform: rotate(15deg) scale(1.1);
  box-shadow: var(--shadow-glow);
}

.logo-icon:hover::before {
  opacity: 1;
  animation: spin 3s linear infinite;
}

.logo-icon img,
.logo-icon i {
  width: 75%;
  height: 75%;
  color: white;
  font-size: 1.6rem;
  z-index: 1;
  position: relative;
}

/* === NAV MENU === */
.nav-menu {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
}

.nav-menu li {
  position: relative;
}

/* === NAV LINKS === */
.nav-link {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 1.125rem 1.75rem;
  text-decoration: none;
  color: var(--text-muted);
  border-radius: var(--radius-xl);
  transition: var(--transition);
  font-weight: 600;
  font-size: 0.95rem;
  position: relative;
  overflow: hidden;
  backdrop-filter: var(--blur-sm);
  border: 1px solid transparent;
}

.nav-link::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--brand-pale), var(--brand-semi));
  opacity: 0;
  transition: var(--transition);
  z-index: -1;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 70%;
  height: 3px;
  background: var(--brand);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--brand);
  transform: translateY(-2px);
  border-color: var(--brand-accent);
}

.nav-link:hover::before,
.nav-link.active::before {
  opacity: 1;
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: translateX(-50%) scaleX(1);
}

.nav-link i {
  font-size: 1.2rem;
  opacity: 0.9;
  transition: var(--transition);
}

.nav-link:hover i,
.nav-link.active i {
  opacity: 1;
  transform: scale(1.15);
}

/* === AUTH LINKS === */
.auth-link {
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.auth-link:hover {
  background: var(--brand-pale);
  border-color: var(--brand-accent);
  box-shadow: var(--shadow-lg);
}

.register-btn {
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-light) 100%);
  color: white !important;
  box-shadow: var(--shadow-brand);
  border: 1px solid var(--brand-accent);
}

.register-btn:hover {
  background: linear-gradient(135deg, var(--brand-light) 0%, var(--brand) 100%);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.register-btn::after {
  display: none;
}

/* === USER DROPDOWN === */
.nav-dropdown {
  position: relative;
}

.dropdown-toggle {
  background: var(--bg-card) !important;
  border: 1px solid var(--border) !important;
  box-shadow: var(--shadow);
  cursor: pointer;
  user-select: none;
}

.dropdown-toggle:hover {
  background: var(--brand-pale) !important;
  border-color: var(--brand-accent) !important;
}

.dropdown-toggle.active {
  background: var(--brand-pale) !important;
  border-color: var(--brand) !important;
  box-shadow: var(--shadow-lg);
}

.user-avatar-mini {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--brand), var(--brand-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 0.85rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.dropdown-toggle:hover .user-avatar-mini {
  transform: scale(1.1);
  box-shadow: var(--shadow-brand);
}

.dropdown-arrow {
  transition: var(--transition);
  font-size: 0.9rem;
}

.dropdown-toggle.active .dropdown-arrow {
  transform: rotate(180deg);
  color: var(--brand);
}

/* === DROPDOWN MENU === */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 1rem);
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--brand-accent);
  border-radius: var(--radius-2xl);
  min-width: 320px;
  backdrop-filter: var(--blur);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-20px) scale(0.95);
  transition: var(--transition);
  z-index: 1001;
  overflow: hidden;
}

.dropdown-menu::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--brand), var(--brand-light));
}

.dropdown-menu::after {
  content: '';
  position: absolute;
  top: -8px;
  right: 2rem;
  width: 16px;
  height: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--brand-accent);
  border-bottom: none;
  border-right: none;
  transform: rotate(45deg);
  border-radius: 2px 0 0 0;
}

.dropdown-menu.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

/* === DROPDOWN HEADER === */
.dropdown-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 2rem;
  background: var(--brand-pale);
  border-bottom: 1px solid var(--brand-accent);
  position: relative;
}

.dropdown-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--brand-pale), rgba(236, 116, 0, 0.05));
  opacity: 0.7;
}

.user-avatar-large {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--brand), var(--brand-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 900;
  font-size: 1.5rem;
  box-shadow: var(--shadow-brand);
  flex-shrink: 0;
  z-index: 1;
  position: relative;
  border: 3px solid rgba(255, 255, 255, 0.2);
}

.user-info {
  flex: 1;
  z-index: 1;
  position: relative;
}

.user-name {
  font-weight: 800;
  color: var(--text-primary);
  margin: 0 0 0.5rem 0;
  font-size: 1.2rem;
  line-height: 1.2;
}

.user-email {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0 0 0.75rem 0;
  word-break: break-word;
}

.user-role {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--brand);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: rgba(255, 255, 255, 0.1);
  padding: 0.4rem 0.8rem;
  border-radius: 20px;
  border: 1px solid var(--brand-accent);
  backdrop-filter: var(--blur-sm);
}

.user-role i {
  font-size: 0.9rem;
}

/* === DROPDOWN ITEMS === */
.dropdown-items {
  padding: 1rem 0;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1rem 2rem;
  text-decoration: none;
  color: var(--text-secondary);
  transition: var(--transition);
  font-weight: 500;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid transparent;
}

.dropdown-item::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--brand-pale);
  opacity: 0;
  transition: var(--transition);
  transform: translateX(-100%);
}

.dropdown-item:hover {
  color: var(--brand);
  transform: translateX(8px);
  border-bottom-color: var(--brand-accent);
}

.dropdown-item:hover::before {
  opacity: 1;
  transform: translateX(0);
}

.dropdown-item i {
  font-size: 1.2rem;
  width: 24px;
  text-align: center;
  position: relative;
  z-index: 1;
  transition: var(--transition);
}

.dropdown-item:hover i {
  transform: scale(1.1);
}

.dropdown-item span {
  position: relative;
  z-index: 1;
  font-size: 1rem;
  flex: 1;
}

/* === SPECIAL DROPDOWN ITEMS === */
.admin-item {
  background: rgba(236, 116, 0, 0.05);
  border: 1px solid var(--brand-accent);
  margin: 0 1rem;
  border-radius: var(--radius-lg);
}

.admin-item:hover {
  background: var(--brand-semi);
  transform: translateX(0) scale(1.02);
}

.admin-item.highlight {
  animation: adminPulse 2s ease;
}

@keyframes adminPulse {
  0%, 100% { 
    background: rgba(236, 116, 0, 0.05);
    box-shadow: 0 0 0 0 var(--brand-accent);
  }
  50% { 
    background: var(--brand-semi);
    box-shadow: 0 0 0 10px transparent;
  }
}

.logout-item {
  color: #ef4444 !important;
  font-weight: 600;
}

.logout-item:hover {
  background: rgba(239, 68, 68, 0.1) !important;
  color: #ef4444 !important;
  transform: translateX(0) !important;
}

.logout-item::before {
  background: rgba(239, 68, 68, 0.1) !important;
}

.logout-item i {
  color: #ef4444;
}

/* === NOTIFICATION BADGE === */
.notification-badge {
  background: #ef4444;
  color: white;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.25rem 0.5rem;
  border-radius: 50px;
  min-width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: auto;
  animation: pulse 2s infinite;
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.4);
}

/* === DROPDOWN DIVIDER === */
.dropdown-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 0.75rem 1rem;
}

/* === HAMBURGER MENU === */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  cursor: pointer;
  padding: 1rem;
  gap: 6px;
  border-radius: var(--radius-lg);
  transition: var(--transition);
  background: var(--bg-card);
  border: 1px solid var(--border);
  backdrop-filter: var(--blur-sm);
  width: 50px;
  height: 50px;
  position: relative;
}

.hamburger:hover {
  background: var(--brand-pale);
  border-color: var(--brand-accent);
  transform: scale(1.05);
}

.hamburger-line {
  width: 24px;
  height: 3px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
  transform-origin: center;
}

.hamburger.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
  background: var(--brand);
}

.hamburger.active .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
  background: var(--brand);
}

/* === MOBILE MENU OVERLAY === */
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: transparent;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  backdrop-filter: transparent;
}

.mobile-menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* === SCROLL PROGRESS === */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  z-index: 9999;
  pointer-events: none;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--brand), var(--brand-light));
  width: 0%;
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 0 2px 2px 0;
  box-shadow: 0 0 15px var(--brand);
  position: relative;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 30px;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3));
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-30px); }
  100% { transform: translateX(30px); }
}

/* === FOCUS STYLES === */
.nav-link:focus-visible,
.dropdown-toggle:focus-visible,
.dropdown-item:focus-visible,
.hamburger:focus-visible {
  outline: 3px solid var(--brand);
  outline-offset: 2px;
}

.focus-visible {
  box-shadow: 0 0 0 3px var(--brand-pale) !important;
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 1200px) {
  .nav-container {
    padding: 1rem 1.5rem;
  }
  
  .nav-menu {
    gap: 0.25rem;
  }
  
  .nav-link {
    padding: 1rem 1.5rem;
    font-size: 0.9rem;
  }
  
  .dropdown-menu {
    min-width: 300px;
  }
}

@media (max-width: 1024px) {
  .nav-link span {
    display: none;
  }
  
  .nav-link {
    padding: 1rem;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    justify-content: center;
  }
  
  .nav-link::after {
    display: none;
  }
  
  .dropdown-toggle span {
    display: none;
  }
  
  .dropdown-toggle {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    justify-content: center;
    padding: 0;
  }
  
  .dropdown-arrow {
    display: none;
  }
  
  .dropdown-menu {
    right: -1rem;
  }
}

@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(10, 15, 22, 0.98);
    backdrop-filter: var(--blur);
    flex-direction: column;
    padding: 2.5rem;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    border-top: 1px solid var(--border);
    box-shadow: var(--shadow-xl);
    gap: 1.25rem;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
  }
  
  .nav-menu::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--brand), var(--brand-light));
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-menu li {
    width: 100%;
  }
  
  .nav-link {
    justify-content: flex-start;
    padding: 1.5rem 2rem;
    width: 100%;
    border-radius: var(--radius-xl);
    font-size: 1.1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    margin: 0;
    box-shadow: var(--shadow);
  }
  
  .nav-link span {
    display: inline;
  }
  
  .nav-link i {
    font-size: 1.3rem;
  }
  
  .dropdown-toggle {
    width: 100%;
    justify-content: flex-start;
    padding: 1.5rem 2rem;
    border-radius: var(--radius-xl);
    background: var(--bg-card);
    border: 1px solid var(--border);
  }
  
  .dropdown-toggle span {
    display: inline;
  }
  
  .dropdown-arrow {
    display: inline;
    margin-left: auto;
  }
  
  .dropdown-menu {
    position: static;
    margin-top: 1rem;
    transform: none;
    opacity: 1;
    visibility: visible;
    background: var(--bg-card);
    border: 1px solid var(--border);
    min-width: auto;
    width: 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  
  .dropdown-menu.active {
    max-height: 500px;
  }
  
  .dropdown-menu::after {
    display: none;
  }
  
  .dropdown-header {
    padding: 1.5rem;
    background: var(--bg-card-hover);
  }
  
  .user-avatar-large {
    width: 50px;
    height: 50px;
    font-size: 1.25rem;
  }
  
  .dropdown-items {
    padding: 0.5rem 0;
  }
  
  .dropdown-item {
    padding: 1rem 1.5rem;
    font-size: 1rem;
  }
  
  .nav-container {
    padding: 1rem;
  }
}

@media (max-width: 480px) {
  .nav-logo {
    font-size: 1.4rem;
  }
  
  .logo-icon {
    width: 45px;
    height: 45px;
  }
  
  .nav-menu {
    padding: 2rem 1.5rem;
    gap: 1rem;
  }
  
  .nav-link {
    padding: 1.25rem 1.5rem;
    font-size: 1rem;
  }
  
  .dropdown-toggle {
    padding: 1.25rem 1.5rem;
  }
  
  .dropdown-header {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
    padding: 1.25rem;
  }
  
  .user-info {
    text-align: center;
  }
  
  .dropdown-item {
    padding: 0.875rem 1.25rem;
  }
  
  .hamburger {
    width: 45px;
    height: 45px;
  }
  
  .hamburger-line {
    width: 20px;
    height: 2px;
  }
}

/* === ANIMATIONS === */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* === ACCESSIBILITY === */
@media (prefers-reduced-motion: reduce) {
  .nav-link,
  .logo-icon,
  .hamburger-line,
  .dropdown-menu,
  .dropdown-item,
  .user-avatar-mini,
  .user-avatar-large {
    transition: none !important;
    animation: none !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .navbar {
    border-bottom: 2px solid var(--brand);
  }
  
  .nav-link {
    border: 2px solid transparent;
  }
  
  .nav-link:hover,
  .nav-link.active {
    border-color: var(--brand);
  }
  
  .dropdown-menu {
    border: 2px solid var(--brand);
  }
}

/* Print styles */
@media print {
  .navbar,
  .hamburger,
  .mobile-menu-overlay,
  .scroll-progress {
    display: none !important;
  }
}