/**
 * CECCM Design System - Header Styles
 * 
 * Unified header/navigation styles using design tokens
 * Extracted from includes/header.php
 * 
 * Version: 1.0.0
 * Date: 2026-02-17
 */

/* ============================================
   HEADER BASE
   ============================================ */
:root {
  /* Canonical definition — design-tokens.css does not define this variable */
  --header-height: 80px;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-dropdown);
  background: rgba(10, 14, 26, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: all var(--transition-base);
}

.header.scrolled {
  background: rgba(10, 14, 26, 0.98);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  z-index: var(--z-sticky);
}

/* Transparent Header Variant */
.header-transparent {
  background: transparent;
  border-bottom: none;
  z-index: var(--z-sticky);
}

.header-transparent.scrolled {
  background: rgba(10, 14, 26, 0.95);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: var(--z-sticky);
}

/* Header Content */
.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) 0;
}

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

.logo-img {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.logo-name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  background: linear-gradient(
    135deg,
    var(--color-accent-cyan),
    var(--color-accent-violet)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  color: var(--color-text-dark-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  position: relative;
}

.nav-link i {
  font-size: 0.85rem;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text-dark);
  background: rgba(255, 255, 255, 0.08);
}

.nav-link.active {
  color: var(--color-accent-cyan);
}

.nav-link.active::after,
.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: linear-gradient(
    90deg,
    var(--color-accent-cyan),
    var(--color-accent-violet)
  );
  border-radius: 1px;
}

.nav-link[aria-current="page"] {
  color: var(--color-accent-cyan);
}

/* ============================================
   LIVE INDICATOR
   ============================================ */
.live-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  background: linear-gradient(
    135deg,
    rgba(239, 68, 68, 0.2),
    rgba(239, 68, 68, 0.1)
  );
  border: 1px solid rgba(239, 68, 68, 0.4);
  border-radius: var(--radius-full);
  margin-left: var(--space-2);
  animation: live-pulse-container 2s ease-in-out infinite;
}

.live-indicator-dot {
  width: 6px;
  height: 6px;
  background: #ef4444;
  border-radius: 50%;
  animation: live-pulse 1.5s ease-in-out infinite;
  box-shadow: 0 0 8px rgba(239, 68, 68, 0.8);
}

.live-indicator-text {
  font-size: 0.65rem;
  font-weight: var(--font-weight-bold);
  color: #ef4444;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

@keyframes live-pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.2);
  }
}

@keyframes live-pulse-container {
  0%,
  100% {
    border-color: rgba(239, 68, 68, 0.4);
    background: linear-gradient(
      135deg,
      rgba(239, 68, 68, 0.2),
      rgba(239, 68, 68, 0.1)
    );
  }
  50% {
    border-color: rgba(239, 68, 68, 0.6);
    background: linear-gradient(
      135deg,
      rgba(239, 68, 68, 0.25),
      rgba(239, 68, 68, 0.15)
    );
  }
}

/* Live indicator hover effect */
.nav-link:hover .live-indicator {
  background: linear-gradient(
    135deg,
    rgba(239, 68, 68, 0.3),
    rgba(239, 68, 68, 0.2)
  );
  border-color: rgba(239, 68, 68, 0.6);
}

/* ============================================
   AUTH BUTTONS
   ============================================ */
.auth-buttons {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.auth-buttons .btn {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
  border-radius: var(--radius-lg);
}

.auth-buttons .btn-primary {
  background: linear-gradient(
    135deg,
    var(--color-accent-cyan),
    var(--color-accent-violet)
  );
  color: var(--color-bg-dark);
  font-weight: var(--font-weight-semibold);
  box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
}

.auth-buttons .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(6, 182, 212, 0.4);
}

.auth-buttons .btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-text-dark-secondary);
}

.auth-buttons .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text-dark);
}

/* ============================================
   NOTIFICATION BADGE
   ============================================ */
.notification-badge {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  color: var(--color-text-dark-secondary);
  transition: all var(--transition-base);
  text-decoration: none;
}

.notification-badge:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-accent-cyan);
}

.badge-count {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  background: linear-gradient(135deg, var(--color-accent-red), #f97316);
  border-radius: 9px;
  font-size: 0.7rem;
  font-weight: var(--font-weight-semibold);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ============================================
   MOBILE MENU TOGGLE
   ============================================ */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 32px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: calc(var(--z-sidebar) + 10) !important;
  position: relative;
  -webkit-tap-highlight-color: transparent;
}

.mobile-menu-toggle .hamburger-line {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--color-text-dark);
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: center;
}

.mobile-menu-toggle:hover .hamburger-line {
  background: var(--color-accent-cyan);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
  transform: translateY(10.5px) rotate(45deg);
  background: var(--color-accent-cyan);
}

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

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
  transform: translateY(-10.5px) rotate(-45deg);
  background: var(--color-accent-cyan);
}

/* Focus state for accessibility */
.mobile-menu-toggle:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

/* ============================================
   MOBILE MENU
   ============================================ */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-height, 80px);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 14, 26, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: var(--space-4);
  padding-bottom: var(--space-8);
  overflow-y: auto;
  transform: translateX(100%);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: var(--z-max-plus);
}

.mobile-menu.active {
  transform: translateX(0);
  opacity: 1;
  visibility: visible;
  display: block;
}

/* Override any conflicting admin/sidebar rules on mobile */
@media (max-width: 992px) {
  .mobile-menu.active {
    display: block !important;
    transform: translateX(0) !important;
    opacity: 1 !important;
    visibility: visible !important;
  }
}

.mobile-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.mobile-nav-list li {
  opacity: 0;
  transform: translateX(20px);
  transition: all 0.3s ease;
}

.mobile-menu.active .mobile-nav-list li {
  opacity: 1;
  transform: translateX(0);
}

.mobile-menu.active .mobile-nav-list li:nth-child(1) {
  transition-delay: 0.05s;
}
.mobile-menu.active .mobile-nav-list li:nth-child(2) {
  transition-delay: 0.1s;
}
.mobile-menu.active .mobile-nav-list li:nth-child(3) {
  transition-delay: 0.15s;
}
.mobile-menu.active .mobile-nav-list li:nth-child(4) {
  transition-delay: 0.2s;
}
.mobile-menu.active .mobile-nav-list li:nth-child(5) {
  transition-delay: 0.25s;
}

.mobile-nav-list li a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  color: var(--color-text-dark-secondary);
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  -webkit-tap-highlight-color: transparent;
}

.mobile-nav-list li a i {
  width: 24px;
  text-align: center;
  font-size: 1.2rem;
}

.mobile-nav-list li a:hover,
.mobile-nav-list li a.active {
  color: var(--color-text-dark);
  background: rgba(255, 255, 255, 0.08);
}

.mobile-nav-list li a.active {
  color: var(--color-accent-cyan);
}

.mobile-auth {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s ease 0.3s;
}

.mobile-menu.active .mobile-auth {
  opacity: 1;
  transform: translateY(0);
}

.mobile-auth .btn {
  width: 100%;
  justify-content: center;
  padding: var(--space-3) var(--space-4);
  font-size: 1rem;
}

.mobile-auth .btn i {
  margin-right: var(--space-2);
}

/* Body scroll lock when mobile menu is open */
body.mobile-menu-open {
  overflow: hidden;
  position: fixed;
  width: 100%;
}

/* Ensure page hero sections don't overlap mobile menu */
body.mobile-menu-open .page-hero,
body.mobile-menu-open .page-hero-bg,
body.mobile-menu-open .main-content,
body.mobile-menu-open section,
body.mobile-menu-open .container {
  z-index: 1 !important;
}

/* Mobile Live Indicator */
.live-indicator-mobile {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  background: linear-gradient(
    135deg,
    rgba(239, 68, 68, 0.2),
    rgba(239, 68, 68, 0.1)
  );
  border: 1px solid rgba(239, 68, 68, 0.4);
  border-radius: var(--radius-full);
  margin-left: auto;
  animation: live-pulse-container 2s ease-in-out infinite;
}

.mobile-nav-list li a:has(.live-indicator-mobile) {
  display: flex;
  align-items: center;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 992px) {
  .nav,
  .auth-buttons {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex !important;
    z-index: calc(var(--z-sidebar) + 10) !important;
    pointer-events: auto !important;
  }

  .mobile-menu {
    display: block;
  }

  /* Ensure header stays above sidebar overlay on mobile */
  .header {
    z-index: calc(var(--z-sidebar) + 5);
  }

  .header.scrolled {
    z-index: calc(var(--z-sticky) + 10);
  }
}

@media (prefers-reduced-motion: reduce) {
  .header {
    transition: none;
  }
  .mobile-menu {
    transition: none;
  }
  .mobile-menu-toggle .hamburger-line {
    transition: none;
  }
  .mobile-menu.active .mobile-nav-list li {
    transition: none;
  }
  .mobile-auth {
    transition: none;
  }
}

@media (max-width: 540px) {
  .logo-img {
    width: 40px;
    height: 40px;
  }

  .logo-name {
    font-size: 1rem;
  }
}