/* Modern Header & Navigation Styles */
:root {
    --header-height: 80px;
    --dentist-blue: #2193b0;
    --dentist-light-blue: #6dd5ed;
    --dentist-orange: #ff7e5f;
    --gradient-blue: linear-gradient(135deg, #2193b0 0%, #6dd5ed 100%);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --transition-fast: all 0.2s ease;
    --transition-normal: all 0.3s ease;
}

.header {
    background-color: #ffffff;
    padding: 0;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    width: 100%;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: var(--transition-normal);
    padding: 8px 0;
}

.logo img {
    height: 50px;
    transition: transform 0.3s ease;
}

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

/* Desktop Navigation */
.desktop-nav {
    display: flex;
    height: 100%;
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
    margin: 0;
    height: 100%;
    padding: 0;
}

.nav-links li {
    height: 100%;
    margin: 0;
    position: relative;
}

.nav-link {
    height: 100%;
    color: #37474F;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-normal);
    position: relative;
    padding: 0 16px;
    font-size: 16px;
    display: flex;
    align-items: center;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-blue);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.nav-link:hover {
    color: var(--dentist-blue);
}

.nav-link:hover::before {
    transform: scaleX(1);
    transform-origin: left;
}

.nav-link.active::before {
    transform: scaleX(1);
}

/* Specialties Dropdown */
.specialties-dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
}

.dropdown-toggle i {
    font-size: 12px;
    transition: transform 0.3s ease;
}

.specialties-dropdown:hover .dropdown-toggle i {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 480px;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    border: 1px solid rgba(0,0,0,0.05);
    overflow: hidden;
}

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

.dropdown-header {
    padding: 20px 24px 16px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.dropdown-header h4 {
    margin: 0 0 4px 0;
    color: #333;
    font-size: 18px;
    font-weight: 600;
}

.dropdown-header p {
    margin: 0;
    color: #666;
    font-size: 14px;
}

.dropdown-content {
    max-height: 400px;
    overflow-y: auto;
    padding: 8px 0;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    color: #37474F;
    text-decoration: none;
    transition: var(--transition-normal);
    font-size: 14px;
    font-weight: 500;
}

.dropdown-item:hover {
    background-color: rgba(33, 147, 176, 0.05);
    color: var(--dentist-blue);
}

.dropdown-item i {
    width: 16px;
    text-align: center;
    color: var(--dentist-blue);
    font-size: 14px;
}

.dropdown-item span {
    flex: 1;
}

.dropdown-footer {
    padding: 16px 24px;
    background: #f8f9fa;
    border-top: 1px solid rgba(0,0,0,0.05);
}

.view-all-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--dentist-blue);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition-normal);
}

.view-all-link:hover {
    color: #1a7a8f;
}

.view-all-link i {
    font-size: 12px;
}

/* Nav Actions - Right side buttons */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Login Button */
.login-btn {
    padding: 8px 20px;
    border: 1.5px solid var(--dentist-blue);
    color: var(--dentist-blue);
    border-radius: 30px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    transition: var(--transition-normal);
    font-size: 15px;
}

.login-btn:hover {
    background: var(--dentist-blue);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* User Profile Button */
.btn-user {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-blue);
    color: white;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.btn-user:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.user-initial {
    font-size: 16px;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    width: 40px;
    height: 40px;
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    border: none;
    background: transparent;
    position: relative;
    z-index: 200;
}

.menu-icon {
    display: block;
    position: relative;
    width: 24px;
    height: 2px;
    background-color: var(--dentist-blue);
    transition: var(--transition-normal);
}

.menu-icon::before,
.menu-icon::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--dentist-blue);
    transition: var(--transition-normal);
}

.menu-icon::before {
    transform: translateY(-8px);
}

.menu-icon::after {
    transform: translateY(8px);
}

.mobile-menu-btn.active .menu-icon {
    background-color: transparent;
}

.mobile-menu-btn.active .menu-icon::before {
    transform: translateY(0) rotate(45deg);
}

.mobile-menu-btn.active .menu-icon::after {
    transform: translateY(0) rotate(-45deg);
}

/* Mobile Navigation */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 400px;
    height: 100vh;
    background-color: white;
    z-index: 1000;
    transition: right 0.3s ease-in-out;
    box-shadow: -5px 0 15px rgba(0,0,0,0.1);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

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

.mobile-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.mobile-logo img {
    height: 40px;
}

.close-menu-btn {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--dentist-blue);
    cursor: pointer;
    transition: var(--transition-normal);
}

.close-menu-btn:hover {
    transform: rotate(90deg);
}

.mobile-nav-links {
    list-style: none;
    padding: 20px;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.mobile-nav-link {
    padding: 12px 16px;
    color: #37474F;
    text-decoration: none;
    font-weight: 500;
    display: block;
    border-radius: 8px;
    transition: var(--transition-normal);
}

.mobile-nav-link:hover {
    background-color: rgba(33, 147, 176, 0.05);
    color: var(--dentist-blue);
}

/* Mobile Specialties Section */
.mobile-specialties-section {
    margin: 20px 0;
    padding: 20px 16px;
    background: #f8f9fa;
    border-radius: 12px;
    border: 1px solid rgba(0,0,0,0.05);
}

.mobile-specialties-header {
    margin-bottom: 16px;
}

.mobile-specialties-header h4 {
    margin: 0 0 4px 0;
    color: #333;
    font-size: 16px;
    font-weight: 600;
}

.mobile-specialties-header p {
    margin: 0;
    color: #666;
    font-size: 13px;
}

.mobile-specialties-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-bottom: 16px;
}

.mobile-specialty-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 12px 8px;
    background: white;
    border-radius: 8px;
    text-decoration: none;
    color: #37474F;
    transition: var(--transition-normal);
    border: 1px solid rgba(0,0,0,0.05);
    text-align: center;
}

.mobile-specialty-item:hover {
    background-color: rgba(33, 147, 176, 0.05);
    color: var(--dentist-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.mobile-specialty-item i {
    font-size: 16px;
    color: var(--dentist-blue);
}

.mobile-specialty-item span {
    font-size: 11px;
    font-weight: 500;
    line-height: 1.2;
}

.mobile-specialties-footer {
    text-align: center;
}

.mobile-view-all-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--dentist-blue);
    text-decoration: none;
    font-weight: 600;
    font-size: 13px;
    transition: var(--transition-normal);
}

.mobile-view-all-link:hover {
    color: #1a7a8f;
}

.mobile-view-all-link i {
    font-size: 11px;
}

/* Mobile Auth Buttons */
.mobile-auth-buttons {
    padding: 10px 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.mobile-login-btn,
.mobile-signup-btn {
    padding: 12px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    text-align: center;
    transition: var(--transition-normal);
}

.mobile-login-btn {
    background: var(--gradient-blue);
    color: white;
}

.mobile-signup-btn {
    background: transparent;
    color: var(--dentist-blue);
    border: 1.5px solid var(--dentist-blue);
}

.mobile-login-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.mobile-signup-btn:hover {
    background: var(--dentist-blue);
    color: white;
}

.mobile-social-login {
    margin-top: 16px;
}

.mobile-social-divider {
    text-align: center;
    margin: 16px 0;
    position: relative;
}

.mobile-social-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(0,0,0,0.1);
}

.mobile-social-divider span {
    background: white;
    padding: 0 12px;
    color: #666;
    font-size: 12px;
}

.mobile-social-buttons {
    display: flex;
    gap: 8px;
}

.mobile-social-btn {
    flex: 1;
    padding: 10px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    text-align: center;
    transition: var(--transition-normal);
    border: 1px solid rgba(0,0,0,0.1);
    background: white;
    color: #37474F;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.mobile-social-btn:hover {
    background: #f8f9fa;
    transform: translateY(-1px);
}

.mobile-social-btn.google:hover {
    background: #f1f3f4;
}

/* Mobile User Section */
.mobile-user-section {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.mobile-user-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: #f8f9fa;
    border-radius: 8px;
    margin-bottom: 12px;
}

.mobile-user-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-blue);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 18px;
}

.mobile-user-info {
    flex: 1;
}

.mobile-user-name {
    font-weight: 600;
    color: #333;
    margin-bottom: 4px;
}

.mobile-user-email {
    font-size: 13px;
    color: #666;
}

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

.mobile-user-links li a {
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: #37474F;
    text-decoration: none;
    transition: var(--transition-normal);
}

.mobile-user-links li a:hover {
    background-color: rgba(33, 147, 176, 0.05);
    color: var(--dentist-blue);
}

.mobile-user-links li a i {
    width: 20px;
    text-align: center;
    color: var(--dentist-blue);
}

.mobile-logout-link {
    color: #dc3545 !important;
}

.mobile-logout-link i {
    color: #dc3545 !important;
}

/* Overlay */
.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0,0,0,0.5);
    z-index: 100;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Responsive Navigation */
@media (max-width: 1024px) {
    .desktop-nav, .nav-actions {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
}

@media (max-width: 768px) {
    .header {
        height: 70px;
    }

    .logo img {
        height: 45px;
    }

    .login-btn {
        font-size: 14px;
        padding: 8px 16px;
    }
    
    .mobile-specialties-grid {
        grid-template-columns: repeat(3, 1fr);
}

    .mobile-specialty-item span {
        font-size: 10px;
    }
}

@media (min-width: 1025px) {
    .mobile-nav, .mobile-menu-btn {
        display: none;
    }
}