/* Modern Header Styles - Dark Mode Compatible */

/* CSS Custom Properties for Dark Mode */
:root {
    --primary-dark: #0a0a0a;
    --secondary-dark: #1a1a1a;
    --accent-dark: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #e2e8f0;
    --text-muted: #94a3b8;
    --border-subtle: rgba(255, 255, 255, 0.1);
    --gradient-primary: linear-gradient(135deg, #3b82f6, #8b5cf6);
    --gradient-dark: linear-gradient(135deg, #000000 0%, #111111 50%, #1a1a1a 100%);
    --shadow-dark: 0 4px 20px rgba(0, 0, 0, 0.5);
    --blur-effect: blur(15px);
}

/* Main Header Container */
.header {
    background: var(--gradient-dark);
    border-bottom: 1px solid var(--border-subtle);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: var(--blur-effect);
    -webkit-backdrop-filter: var(--blur-effect);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    position: relative;
}

/* Brand Logo */
.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo:hover {
    transform: translateY(-1px) scale(1.02);
    filter: brightness(1.1);
}

/* Primary Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: 2rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2rem;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.75rem 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: block;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 1px;
}

.nav-link:hover::after {
    width: 100%;
}

/* Dropdown Navigation */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    font-weight: 500 !important;
}

.dropdown-arrow {
    font-size: 0.7rem;
    margin-left: 0.5rem;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: var(--blur-effect);
    -webkit-backdrop-filter: var(--blur-effect);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 0.75rem 0;
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) scale(0.95);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-dark);
}

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

.dropdown-item {
    display: block;
    padding: 0.75rem 1.5rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-left: 3px solid transparent;
    position: relative;
}

.dropdown-item:hover {
    background: rgba(59, 130, 246, 0.1);
    color: var(--text-primary);
    border-left-color: #3b82f6;
    transform: translateX(4px);
}

/* Header Action Buttons */
.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Mobile Customer Panel - Hidden on Desktop */
.mobile-customer-panel {
    display: none;
}

.btn-customer-panel {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-subtle);
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.btn-customer-panel:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.1);
}

/* Quantum Menu Activator */
.zephyr-menu-catalyst {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    padding: 0.8rem;
    gap: 6px;
    border-radius: 12px;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
    border: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(15px);
}

.zephyr-menu-catalyst:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.05));
    transform: scale(1.08) rotate(2deg);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.2);
}

.nexus-bar-element {
    width: 26px;
    height: 3px;
    background: linear-gradient(90deg, var(--text-primary), #3b82f6);
    border-radius: 3px;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    transform-origin: center;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

/* Morphing Animation States */
.zephyr-menu-catalyst.aurora-active .nexus-bar-element:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px) scale(1.1);
    background: linear-gradient(90deg, #ef4444, #f97316);
}

.zephyr-menu-catalyst.aurora-active .nexus-bar-element:nth-child(2) {
    opacity: 0;
    transform: scale(0) rotate(180deg);
}

.zephyr-menu-catalyst.aurora-active .nexus-bar-element:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px) scale(1.1);
    background: #3b82f6;
}

/* Mobile Responsive Design */
@media (max-width: 768px) {
    .header-container {
        padding: 0 1rem;
        height: 65px;
    }
    
    .logo {
        font-size: 1.6rem;
    }
    
    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: linear-gradient(145deg, rgba(8, 8, 8, 0.97), rgba(18, 18, 18, 0.95));
        backdrop-filter: blur(20px) saturate(180%);
        -webkit-backdrop-filter: blur(20px) saturate(180%);
        border-top: 2px solid rgba(59, 130, 246, 0.3);
        transform: translateY(-100%) scale(0.95);
        opacity: 0;
        visibility: hidden;
        transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        box-shadow: 0 25px 50px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(255, 255, 255, 0.05);
        border-radius: 0 0 20px 20px;
    }
    
    .nav.quantum-navigation-active {
        transform: translateY(0) scale(1);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu {
        flex-direction: column;
        padding: 1.5rem 0;
        gap: 0;
    }
    
    .nav-item {
        width: 100%;
    }
    
    .nav-link {
        display: block;
        padding: 1rem 2rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        font-size: 1rem;
        font-weight: 500;
    }
    
    .nav-link::after {
        display: none;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 0;
        visibility: hidden;
        transform: none;
        box-shadow: none;
        background: rgba(26, 26, 26, 0.95);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: 8px;
        margin: 0.5rem 1rem;
        max-height: 0;
        overflow: hidden;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }
    
    .dropdown.dropdown-active .dropdown-menu {
        opacity: 1;
        visibility: visible;
        max-height: 300px;
        padding: 0.75rem 0;
    }
    
    .dropdown-item {
        color: var(--text-muted);
        background: transparent;
        border-left: 3px solid transparent;
        margin: 0 0.5rem;
        border-radius: 6px;
        font-weight: 500;
    }
    
    .dropdown-item:hover {
        background: rgba(59, 130, 246, 0.15);
        color: var(--text-primary);
        border-left-color: #3b82f6;
        transform: translateX(4px);
    }
    
    .zephyr-menu-catalyst {
        display: flex;
    }
    
    .header-actions {
        gap: 0.75rem;
    }
    
    .btn-customer-panel {
        font-size: 0.85rem;
        padding: 0.6rem 1rem;
    }
}

@media (max-width: 480px) {
    .header-container {
        padding: 0 0.75rem;
        height: 60px;
    }
    
    .logo {
        font-size: 1.4rem;
    }
    
    .btn-customer-panel {
        display: none;
    }
    
    .mobile-nav-trigger {
        padding: 0.5rem;
    }
    
    .burger-line {
        width: 20px;
    }
}

/* Dark Mode Enhancements */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-dark: #000000;
        --secondary-dark: #0a0a0a;
        --accent-dark: #1a1a1a;
    }
}

/* Smooth Scrolling for Mobile Menu */
@media (max-width: 768px) {
    .nav-menu {
        max-height: 70vh;
        overflow-y: auto;
        scrollbar-width: thin;
        scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
    }
    
    /* Show Mobile Customer Panel */
    .mobile-customer-panel {
        display: block;
        margin-top: 1rem;
        padding-top: 1rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .mobile-customer-panel .nav-link {
        background: linear-gradient(135deg, #3b82f6, #8b5cf6);
        color: white;
        padding: 0.75rem 1.5rem;
        border-radius: 8px;
        font-weight: 600;
        text-align: center;
        margin: 0 0.5rem;
        transition: all 0.3s ease;
    }
    
    .mobile-customer-panel .nav-link:hover {
        background: linear-gradient(135deg, #2563eb, #7c3aed);
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
    }
    
    .nav-menu::-webkit-scrollbar {
        width: 4px;
    }
    
    .nav-menu::-webkit-scrollbar-track {
        background: transparent;
    }
    
    .nav-menu::-webkit-scrollbar-thumb {
        background: rgba(255, 255, 255, 0.2);
        border-radius: 2px;
    }
}