/* ========================================
   USER PANEL HEADER - ISOLATED CSS
   ======================================== */

/* Header-specific CSS variables */
:root {
    --header-height: 70px;
    --header-bg: #ffffff;
    --header-border: #e5e7eb;
    --header-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --header-text: #1f2937;
    --header-text-muted: #6b7280;
    --header-primary: #4a67ff;
    --header-primary-hover: #3a56e4;
    --header-success: #10b981;
    --header-warning: #f59e0b;
    --header-danger: #ef4444;
    --header-info: #06b6d4;
}

/* Header Container */
.user-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--header-bg);
    border-bottom: 1px solid var(--header-border);
    box-shadow: var(--header-shadow);
    z-index: 1030;
    transition: all 0.3s ease;
}

.user-header .navbar {
    height: 100%;
    padding: 0 1.5rem;
}

/* Brand Section */
.user-header .navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--header-text);
    font-weight: 700;
    font-size: 1.25rem;
}

.user-header .navbar-brand:hover {
    color: var(--header-primary);
    text-decoration: none;
}

.user-header .brand-icon {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--header-primary), var(--header-primary-hover));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(74, 103, 255, 0.3);
}

/* Navigation Links */
.user-header .navbar-nav .nav-link {
    color: var(--header-text-muted);
    font-weight: 500;
    padding: 12px 16px;
    border-radius: 8px;
    transition: all 0.3s ease;
    margin: 0 4px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-header .navbar-nav .nav-link:hover {
    color: var(--header-primary);
    background-color: rgba(74, 103, 255, 0.1);
    transform: translateY(-1px);
}

.user-header .navbar-nav .nav-link.active {
    color: var(--header-primary);
    background-color: rgba(74, 103, 255, 0.15);
    font-weight: 600;
}

.user-header .navbar-nav .nav-link i {
    font-size: 1.1rem;
}

/* Sidebar Toggle Button */
.user-header .navbar-toggler {
    border: none;
    padding: 8px;
    border-radius: 8px;
    background: var(--header-primary);
    color: white;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
}

.user-header .navbar-toggler:hover {
    background: var(--header-primary-hover);
    transform: scale(1.05);
}

.user-header .navbar-toggler:focus {
    box-shadow: 0 0 0 0.2rem rgba(74, 103, 255, 0.25);
}

.user-header .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.9%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Mobile Responsive Styles */
@media (max-width: 768px) {
    .user-header .navbar {
        padding: 0 1rem;
    }
    
    .user-header .navbar-brand {
        font-size: 1.1rem;
        gap: 8px;
    }
    
    .user-header .brand-icon {
        width: 35px;
        height: 35px;
        font-size: 1.25rem;
    }
    
    .user-header .navbar-nav {
        display: none !important;
    }
    
    .user-header .navbar-toggler {
        display: flex !important;
        width: 36px;
        height: 36px;
    }
}

@media (max-width: 576px) {
    .user-header {
        height: 60px;
    }
    
    .user-header .navbar {
        padding: 0 0.75rem;
    }
    
    .user-header .navbar-brand {
        font-size: 1rem;
    }
    
    .user-header .brand-icon {
        width: 30px;
        height: 30px;
        font-size: 1rem;
    }
    
    .user-header .navbar-toggler {
        width: 32px;
        height: 32px;
    }
}