/* Header - Professional */

.header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.92);
    border-bottom: 1px solid var(--color-outline-variant);
    z-index: 1000;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    transition: box-shadow var(--transition-base);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    gap: 40px;
}

/* Logo */
.logo {
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-dot {
    width: 8px;
    height: 8px;
    background: var(--color-secondary);
    border-radius: 50%;
    flex-shrink: 0;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 0;
    flex: 1;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 10px 16px;
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 500;
    color: var(--color-on-surface);
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.nav-link:hover {
    background: var(--color-surface-variant);
    color: var(--color-primary);
}

.nav-link svg {
    width: 12px;
    height: 12px;
    transition: transform var(--transition-base);
}

.nav-item.has-dropdown:hover .nav-link svg {
    transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 200px;
    background: white;
    border: 1px solid var(--color-outline-variant);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 24px rgba(13, 12, 34, 0.12);
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
    z-index: 100;
}

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

.dropdown-item {
    display: block;
    padding: 10px 16px;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-on-surface);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.dropdown-item:hover {
    background: var(--color-surface-variant);
    color: var(--color-primary);
}

/* Nav Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-link-action {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--color-on-surface);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.nav-link-action:hover {
    background: var(--color-surface-variant);
    color: var(--color-primary);
}

.nav-link-action svg {
    width: 20px;
    height: 20px;
}

.btn-nav-secondary {
    padding: 10px 20px;
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 600;
    color: var(--color-on-surface);
    text-decoration: none;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.btn-nav-secondary:hover {
    background: var(--color-surface-variant);
}

.btn-nav-primary {
    padding: 10px 22px;
    background: var(--color-primary);
    color: var(--color-on-primary);
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    letter-spacing: 0.01em;
}

.btn-nav-primary:hover {
    background: #1C1C30;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(10, 10, 26, 0.25);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-on-surface);
    border-radius: 2px;
    transition: all var(--transition-base);
}

/* Mobile Responsive */
@media (max-width: 1024px) {
    .nav-menu {
        gap: 4px;
    }
    
    .nav-link {
        padding: 8px 12px;
        font-size: 14px;
    }
    
    .btn-nav-secondary,
    .btn-nav-primary {
        padding: 8px 16px;
        font-size: 14px;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 12px 0;
    }
    
    .nav-menu {
        position: fixed;
        top: 65px;
        left: 0;
        right: 0;
        background: white;
        border-bottom: 1px solid var(--color-outline-variant);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 16px;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-20px);
        transition: all var(--transition-base);
        max-height: calc(100vh - 65px);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .nav-item {
        width: 100%;
    }
    
    .nav-link {
        width: 100%;
        justify-content: space-between;
        padding: 12px 16px;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding: 0 0 0 16px;
        margin-top: 8px;
        display: none;
    }
    
    .nav-item.has-dropdown.active .dropdown-menu {
        display: block;
    }
    
    .nav-actions {
        gap: 8px;
    }
    
    .nav-link-action {
        width: 36px;
        height: 36px;
    }
    
    .btn-nav-secondary {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
}

/* Active State */
.nav-link.active {
    color: var(--color-primary);
    background: var(--color-surface-variant);
}

/* Hover Animation */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-menu {
    animation: slideDown 0.2s ease-out;
}

/* Sticky Header Effect */
.header.scrolled {
    box-shadow: 0 2px 8px rgba(13, 12, 34, 0.08);
}