/* =============================================
   MYP PLATFORM - MODERNE NAVBAR
   Mercedes-Benz Design System
   ============================================= */

:root {
    /* Mercedes-Benz Farbpalette */
    --mb-primary: #00adef;
    --mb-secondary: #6c757d;
    --mb-dark: #1e2125;
    --mb-light: #f8f9fa;
    --mb-silver: #c7c7cc;
    
    /* Navbar-spezifische Variablen */
    --navbar-height: 4rem;
    --navbar-bg: rgba(255, 255, 255, 0.95);
    --navbar-border: rgba(0, 173, 239, 0.1);
    --navbar-shadow: 0 2px 20px rgba(0, 173, 239, 0.1);
    --navbar-blur: 20px;
    
    /* Navigation Items */
    --nav-item-hover: rgba(0, 173, 239, 0.1);
    --nav-item-active: rgba(0, 173, 239, 0.15);
    --nav-text-primary: #1e2125;
    --nav-text-secondary: #6c757d;
    --nav-text-active: #00adef;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.dark {
    --navbar-bg: rgba(30, 33, 37, 0.95);
    --navbar-border: rgba(0, 173, 239, 0.2);
    --navbar-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    --nav-item-hover: rgba(0, 173, 239, 0.15);
    --nav-item-active: rgba(0, 173, 239, 0.25);
    --nav-text-primary: #f8f9fa;
    --nav-text-secondary: #c7c7cc;
}

/* ===== NAVBAR CONTAINER ===== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    height: var(--navbar-height);
    background: var(--navbar-bg);
    backdrop-filter: blur(var(--navbar-blur));
    -webkit-backdrop-filter: blur(var(--navbar-blur));
    border-bottom: 1px solid var(--navbar-border);
    box-shadow: var(--navbar-shadow);
    transition: all var(--transition-smooth);
}

.navbar.scrolled {
    --navbar-height: 3.5rem;
    --navbar-blur: 30px;
    --navbar-shadow: 0 4px 25px rgba(0, 173, 239, 0.15);
}

/* ===== NAVBAR LAYOUT ===== */
.navbar-container {
    height: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

/* ===== BRAND SECTION ===== */
.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--nav-text-primary);
    font-weight: 600;
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

.navbar-brand:hover {
    transform: scale(1.02);
    color: var(--mb-primary);
}

.navbar-brand .brand-icon {
    width: 2rem;
    height: 2rem;
    color: var(--mb-primary);
    transition: transform var(--transition-smooth);
}

.navbar-brand:hover .brand-icon {
    transform: rotate(15deg);
}

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

.brand-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--nav-text-primary);
}

.brand-subtitle {
    font-size: 0.75rem;
    color: var(--nav-text-secondary);
    font-weight: 500;
}

/* ===== DESKTOP NAVIGATION ===== */
.navbar-nav {
    display: none;
    flex: 1;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 173, 239, 0.05);
    border-radius: 1rem;
    padding: 0.5rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 173, 239, 0.1);
}

@media (min-width: 1024px) {
    .navbar-nav {
        display: flex;
    }
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    color: var(--nav-text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    transition: all var(--transition-fast);
    position: relative;
}

.nav-item:hover {
    color: var(--nav-text-active);
    background: var(--nav-item-hover);
    transform: translateY(-1px);
}

.nav-item.active {
    color: var(--nav-text-active);
    background: var(--nav-item-active);
    font-weight: 600;
}

.nav-item.active::after {
    content: '';
    position: absolute;
    bottom: -0.25rem;
    left: 50%;
    transform: translateX(-50%);
    width: 0.25rem;
    height: 0.25rem;
    background: var(--mb-primary);
    border-radius: 50%;
}

.nav-item i {
    font-size: 1rem;
    width: 1.25rem;
    height: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===== NAVBAR ACTIONS (Rechte Seite) ===== */
.navbar-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.navbar-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.75rem;
    background: transparent;
    border: 1px solid transparent;
    color: var(--nav-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.navbar-btn:hover {
    background: var(--nav-item-hover);
    color: var(--nav-text-active);
    border-color: var(--navbar-border);
    transform: scale(1.05);
}

.navbar-btn.has-notifications::after {
    content: '';
    position: absolute;
    top: 0.25rem;
    right: 0.25rem;
    width: 0.5rem;
    height: 0.5rem;
    background: #dc3545;
    border-radius: 50%;
    border: 2px solid var(--navbar-bg);
}

/* ===== MOBILE MENU TOGGLE ===== */
.mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border: none;
    background: transparent;
    color: var(--nav-text-primary);
    cursor: pointer;
    border-radius: 0.5rem;
    transition: all var(--transition-fast);
}

.mobile-menu-toggle:hover {
    background: var(--nav-item-hover);
    color: var(--nav-text-active);
}

@media (min-width: 1024px) {
    .mobile-menu-toggle {
        display: none;
    }
}

/* ===== MOBILE MENU ===== */
.mobile-menu {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--navbar-bg);
    backdrop-filter: blur(var(--navbar-blur));
    -webkit-backdrop-filter: blur(var(--navbar-blur));
    transform: translateX(-100%);
    transition: transform var(--transition-smooth);
    overflow-y: auto;
    z-index: 999;
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-nav {
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-nav-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border-radius: 0.75rem;
    color: var(--nav-text-secondary);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.mobile-nav-item:hover {
    background: var(--nav-item-hover);
    color: var(--nav-text-active);
    border-color: var(--navbar-border);
}

.mobile-nav-item.active {
    background: var(--nav-item-active);
    color: var(--nav-text-active);
    border-color: var(--mb-primary);
    font-weight: 600;
}

.mobile-nav-item i {
    font-size: 1.25rem;
    width: 1.5rem;
    height: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.dropdown-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    min-width: 16rem;
    background: var(--navbar-bg);
    border: 1px solid var(--navbar-border);
    border-radius: 0.75rem;
    box-shadow: 0 8px 30px rgba(0, 173, 239, 0.15);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-0.5rem);
    transition: all var(--transition-fast);
    z-index: 1001;
}

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

.dropdown-header {
    padding: 1rem;
    border-bottom: 1px solid var(--navbar-border);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--nav-text-primary);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--nav-text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--nav-item-hover);
    color: var(--nav-text-active);
}

.dropdown-divider {
    margin: 0.5rem 0;
    border-top: 1px solid var(--navbar-border);
}

/* ===== USER AVATAR ===== */
.user-avatar {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--mb-primary), #0086c3);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

.user-avatar:hover {
    transform: scale(1.05);
    border-color: var(--mb-primary);
    box-shadow: 0 4px 15px rgba(0, 173, 239, 0.3);
}

/* ===== RESPONSIVE ADJUSTMENTS ===== */
@media (max-width: 768px) {
    .navbar-container {
        padding: 0 1rem;
        gap: 1rem;
    }
    
    .brand-text {
        display: none;
    }
    
    .navbar-actions {
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .navbar-container {
        padding: 0 0.75rem;
    }
    
    .navbar-actions .navbar-btn:not(.mobile-menu-toggle) {
        display: none;
    }
}

/* ===== ACCESSIBILITY ===== */
.navbar-btn:focus,
.nav-item:focus,
.mobile-nav-item:focus {
    outline: 2px solid var(--mb-primary);
    outline-offset: 2px;
}

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

.navbar {
    animation: slideDown 0.5s ease;
}

/* ===== PERFORMANCE OPTIMIZATIONS ===== */
.navbar * {
    will-change: auto;
}

.navbar-brand:hover,
.nav-item:hover,
.navbar-btn:hover {
    will-change: transform;
}

/* ===== PRINT STYLES ===== */
@media print {
    .navbar {
        display: none;
    }
}