/* ===== MODERN HEADER DESIGN ===== */
/* طراحی مدرن هدر با تناسب با کلیت سایت */

/* CSS Variables - هماهنگ با تم سایت */
:root {
  /* Brand Colors - هماهنگ با تنظیمات پوسته */
  --header-primary: var(--site-primary-color, #0d6efd);
  --header-primary-hover: var(--site-primary-color, #0b5ed7);
  --header-secondary: var(--site-button-secondary-bg, #6c757d);
  --header-success: var(--site-success-color, #198754);
  --header-info: var(--site-info-color, #0dcaf0);
  --header-warning: var(--site-warning-color, #ffc107);
  --header-danger: var(--site-error-color, #dc3545);
  
  /* Neutral Colors */
  --header-white: #ffffff;
  --header-light: var(--site-section-bg-color, #f8f9fa);
  --header-dark: var(--site-text-primary-color, #212529);
  --header-muted: var(--site-text-secondary-color, #6c757d);
  
  /* Background Colors */
  --header-bg: var(--site-navbar-bg-color, #ffffff);
  --header-bg-scrolled: var(--site-navbar-bg-color, #ffffff);
  --header-border: var(--site-card-border-color, #e9ecef);
  
  /* Text Colors */
  --header-text: var(--site-navbar-text-color, #212529);
  --header-text-muted: var(--site-text-muted-color, #6c757d);
  --header-text-light: #ffffff;
  
  /* Shadow & Effects */
  --header-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  --header-shadow-hover: 0 4px 8px rgba(0, 0, 0, 0.15);
  --header-shadow-scrolled: 0 4px 12px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --header-transition: all 0.3s ease;
  --header-transition-fast: all 0.15s ease;
  
  /* Spacing */
  --header-height: 70px;
  --header-topbar-height: 36px;
  --header-padding: 1rem;
  --border-radius: 8px;
  --border-radius-lg: 12px;
}

/* ===== HEADER CONTAINER ===== */
.modern-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--header-bg);
  border-bottom: 1px solid var(--header-border);
  box-shadow: var(--header-shadow);
  transition: var(--header-transition);
  min-height: calc(var(--header-height) + var(--header-topbar-height));
  height: auto;
  display: flex;
  flex-direction: column;
  direction: rtl;
}

.modern-header.scrolled {
  background: var(--header-bg-scrolled);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--header-shadow-scrolled);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: var(--header-height);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--header-padding);
  gap: 2rem;
}

.header-topbar {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.35rem var(--header-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: var(--header-text-muted);
  position: relative;
}

.header-topbar::after {
  content: '';
  position: absolute;
  inset-inline-start: 0;
  inset-inline-end: 0;
  inset-block-end: 0;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: rgba(15, 23, 42, 0.05);
  pointer-events: none;
}

.header-topbar .topbar-left,
.header-topbar .topbar-right {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.header-topbar .topbar-info {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: inherit;
}

.header-topbar .topbar-info i {
  color: var(--header-primary);
  font-size: 0.9rem;
}

.header-topbar .topbar-link {
  color: inherit;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease;
}

.header-topbar .topbar-link:hover,
.header-topbar .topbar-link:focus-visible {
  background: rgba(13, 110, 253, 0.12);
  color: var(--header-primary);
  outline: none;
}

/* ===== LOGO SECTION ===== */
.header-logo {
  flex-shrink: 0;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--header-text);
  transition: var(--header-transition-fast);
}

.logo-link:hover {
  color: var(--header-primary);
  transform: translateY(-1px);
}

.logo-icon {
  width: 45px;
  height: 45px;
  background: linear-gradient(135deg, var(--header-primary) 0%, #0b5ed7 100%);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--header-text-light);
  font-size: 1.25rem;
  box-shadow: 0 2px 8px rgba(13, 110, 253, 0.3);
  transition: var(--header-transition-fast);
}

.logo-link:hover .logo-icon {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(13, 110, 253, 0.4);
}

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

.logo-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--header-text);
}

.logo-subtitle {
  font-size: 0.875rem;
  color: var(--header-text-muted);
  font-weight: 500;
}

/* ===== NAVIGATION MENU ===== */
.header-navigation {
  flex: 1;
  display: flex;
  justify-content: center;
}

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

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  color: var(--header-text);
  text-decoration: none;
  border-radius: var(--border-radius);
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--header-transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--header-light);
  background: rgba(13, 110, 253, 0.1);
  transform: translateY(-1px);
}

.nav-link.active {
  color: var(--header-light);
  background: rgba(13, 110, 253, 0.1);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--header-primary);
  border-radius: 1px;
}

/* ===== DROPDOWN MENU ===== */
.dropdown {
  position: relative;
}

.dropdown-toggle {
  position: relative;
}

.dropdown-icon {
  font-size: 0.75rem;
  transition: var(--header-transition-fast);
}

.dropdown:hover .dropdown-icon {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 200px;
  background: var(--header-white);
  border: 1px solid var(--header-border);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--header-shadow-hover);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--header-transition);
  z-index: 1001;
  padding: 0.5rem 0;
}

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

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--header-text-light);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--header-transition-fast);
}

.dropdown-item:hover {
  background: rgba(13, 110, 253, 0.1);
  color: var(--header-primary);
}

.dropdown-item.active {
  background: rgba(13, 110, 253, 0.15);
  color: var(--header-primary);
}

.dropdown-item i {
  width: 16px;
  text-align: center;
  color: var(--header-primary);
}

/* ===== HEADER ACTIONS ===== */
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

.action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--header-light);
  border: 1px solid var(--header-border);
  border-radius: 50%;
  color: var(--header-text-muted);
  cursor: pointer;
  transition: var(--header-transition-fast);
  position: relative;
}

.action-btn:hover {
  background: var(--header-primary);
  color: var(--header-text-light);
  border-color: var(--header-primary);
  transform: translateY(-2px);
  box-shadow: var(--header-shadow-hover);
}

/* ===== HEADER SOCIAL LINKS ===== */
.header-social-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.header-social-links .social-link {
  width: 36px;
  height: 36px;
  font-size: 0.9rem;
}

.header-social-links .social-link:hover {
  background: var(--header-primary);
  color: var(--header-text-light);
  border-color: var(--header-primary);
}

body.sidebar-open .sidebar-toggle {
  background: var(--header-primary);
  color: var(--header-text-light);
  border-color: var(--header-primary);
  box-shadow: var(--header-shadow-hover);
}

.notification-btn {
  position: relative;
}

.notification-btn .badge-dot {
  position: absolute;
  inset-inline-end: 8px;
  inset-block-start: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #ff4d4f;
  box-shadow: 0 0 0 3px rgba(255, 77, 79, 0.2);
}

.header-cta {
  padding: 0.55rem 1.3rem;
  border-radius: 999px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  box-shadow: 0 1rem 2rem rgba(13, 110, 253, 0.25);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.header-cta:hover,
.header-cta:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 1.5rem 2.5rem rgba(13, 110, 253, 0.3);
  outline: none;
}

/* ===== USER SECTION ===== */
.user-section {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.user-profile {
  position: relative;
}

.user-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: var(--header-primary);
  border: 1px solid var(--header-border);
  border-radius: var(--border-radius);
  color: var(--header-text);
  cursor: pointer;
  transition: var(--header-transition-fast);
  text-decoration: none;
}

.user-btn:hover {
  background: var(--header-primary);
  color: var(--header-text-light);
  border-color: var(--header-primary);
  transform: translateY(-1px);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--header-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--header-text-light);
  font-size: 0.875rem;
  overflow: hidden;
}

.user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-name {
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--header-text-light);
}

.user-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 200px;
  background: var(--header-white);
  border: 1px solid var(--header-border);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--header-shadow-hover);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--header-transition);
  z-index: 1001;
  padding: 0.5rem 0;
}

.user-profile:hover .user-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

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

.user-dropdown .dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--header-text-primary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--header-transition-fast);
  border: none;
  background: none;
  width: 100%;
  text-align: right;
  cursor: pointer;
}

.user-dropdown .dropdown-item:hover {
  background: rgba(13, 110, 253, 0.1);
  color: var(--header-primary);
}

.user-dropdown .dropdown-item i {
  width: 16px;
  text-align: center;
  color: var(--header-primary);
}

.dropdown-divider {
  height: 1px;
  background: var(--header-border);
  margin: 0.5rem 0;
}

.logout-btn {
  color: var(--header-danger) !important;
}

.logout-btn:hover {
  background: rgba(220, 53, 69, 0.1) !important;
  color: var(--header-danger) !important;
}

/* ===== AUTH BUTTONS ===== */
.auth-buttons {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.auth-buttons .btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--border-radius);
  transition: var(--header-transition-fast);
  text-decoration: none;
}

.auth-buttons .btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--header-shadow-hover);
}

/* ===== MOBILE MENU ===== */
.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--header-light);
  border: 1px solid var(--header-border);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--header-transition-fast);
}

.mobile-toggle:hover {
  background: var(--header-primary);
  color: var(--header-text-light);
  border-color: var(--header-primary);
}

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 3px;
  width: 20px;
  height: 16px;
}

.hamburger span {
  width: 100%;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: var(--header-transition-fast);
}

.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  max-width: 400px;
  height: 100vh;
  background: var(--header-white);
  border-left: 1px solid var(--header-border);
  box-shadow: var(--header-shadow-hover);
  z-index: 1002;
  transition: var(--header-transition);
  overflow-y: auto;
}

.mobile-nav.active {
  right: 0;
}

.mobile-nav-content {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  border-bottom: 1px solid var(--header-border);
  background: var(--header-light);
}

.mobile-nav-header h3 {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--header-text);
}

.mobile-close {
  width: 40px;
  height: 40px;
  background: var(--header-primary);
  color: var(--header-text-light);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: var(--header-transition-fast);
}

.mobile-close:hover {
  background: var(--header-primary-hover);
  transform: scale(1.05);
}

.mobile-nav-body {
  flex: 1;
  padding: 1rem;
}

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

.mobile-menu li {
  margin-bottom: 0.5rem;
}

.mobile-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--header-text);
  text-decoration: none;
  border-radius: var(--border-radius);
  font-weight: 500;
  transition: var(--header-transition-fast);
}

.mobile-link:hover {
  background: rgba(13, 110, 253, 0.1);
  color: var(--header-primary);
}

.mobile-link i {
  width: 20px;
  text-align: center;
  color: var(--header-primary);
}

.mobile-auth {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--header-border);
}

/* ===== SEARCH MODAL ===== */
.search-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1003;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--header-transition);
}

.search-modal.active {
  opacity: 1;
  visibility: visible;
}

.search-modal-content {
  background: var(--header-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--header-shadow-hover);
  width: 90%;
  max-width: 500px;
  max-height: 80vh;
  overflow: hidden;
}

.search-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  border-bottom: 1px solid var(--header-border);
  background: var(--header-light);
}

.search-header h3 {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--header-text);
}

.search-close {
  width: 32px;
  height: 32px;
  background: var(--header-secondary);
  color: var(--header-text-light);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: var(--header-transition-fast);
}

.search-close:hover {
  background: var(--header-danger);
  transform: scale(1.05);
}

.search-body {
  padding: 1.5rem;
}

.search-input-group {
  display: flex;
  gap: 0.5rem;
}

.search-input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid var(--header-border);
  border-radius: var(--border-radius);
  font-size: 1rem;
  transition: var(--header-transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--header-primary);
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
}

.search-submit {
  padding: 0.75rem 1.5rem;
  background: var(--header-primary);
  color: var(--header-text-light);
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--header-transition-fast);
}

.search-submit:hover {
  background: var(--header-primary-hover);
  transform: translateY(-1px);
}

/* ===== HEADER SPACER ===== */
.header-spacer {
  height: calc(var(--header-height) + var(--header-topbar-height));
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 991.98px) {
  :root {
    --header-topbar-height: 0px;
  }
}

@media (max-width: 1024px) {
  .header-navigation {
    display: none;
  }
  
  .mobile-toggle {
    display: flex;
  }
  
  .header-container {
    gap: 1rem;
  }
}

@media (max-width: 768px) {
  .header-container {
    padding: 0 1rem;
  }
  
  .logo-text {
    display: flex !important;
    flex-direction: column;
  }
  
  .logo-title {
    font-size: 1rem;
  }
  
  .logo-subtitle {
    font-size: 0.75rem;
  }
  
  .user-name {
    display: none;
  }
  
  .auth-buttons .btn span {
    display: none;
  }
  
  .auth-buttons .btn {
    padding: 0.5rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
  }
}

@media (max-width: 480px) {
  .header-container {
    gap: 0.5rem;
  }
  
  .logo-icon {
    width: 35px;
    height: 35px;
    font-size: 1rem;
  }
  
  .action-btn {
    width: 35px;
    height: 35px;
  }
}

/* ===== DARK MODE SUPPORT ===== */
@media (prefers-color-scheme: dark) {
  :root {
    --header-bg: #1a1a1a;
    --header-bg-scrolled: rgba(26, 26, 26, 0.95);
    --header-border: #333333;
    --header-text: #ffffff;
    --header-text-muted: #a0a0a0;
    --header-light: #2d2d2d;
  }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modern-header {
  animation: fadeInDown 0.5s ease;
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===== FOCUS STATES ===== */
.nav-link:focus,
.action-btn:focus,
.user-btn:focus,
.mobile-toggle:focus {
  outline: 2px solid var(--header-primary);
  outline-offset: 2px;
}

/* ===== LOADING STATES ===== */
.modern-header.loading {
  pointer-events: none;
  opacity: 0.8;
}

.modern-header.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--header-primary), transparent);
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}