/* Modern Navigation Menu Styles */
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --warning-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --danger-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    
    --nav-height: 75px;
    --nav-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
    --nav-border-radius: 12px;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    --text-primary: #ffffff;
    --text-secondary: #e2e8f0;
    --text-light: #cbd5e0;
    --bg-glass: rgba(26, 32, 44, 0.95);
    --bg-overlay: rgba(255, 255, 255, 0.1);
}

/* Modern Navigation Container */
.modern-navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--nav-shadow);
    border-radius: 0 0 var(--nav-border-radius) var(--nav-border-radius);
    margin-bottom: 2rem;
    transition: var(--transition-smooth);
}

.modern-navbar.scrolled {
    background: rgba(26, 32, 44, 0.98);
    backdrop-filter: blur(25px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-height);
    position: relative;
}

/* Logo Section */
.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    transition: var(--transition-smooth);
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.brand-logo {
    height: 50px;
    width: auto;
    transition: var(--transition-smooth);
}

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

.brand-text {
    font-size: 1.6rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation Menu */
.navbar-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 15px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.4rem;
    border-radius: 8px;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    border: 2px solid transparent;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--bg-overlay);
    transition: var(--transition-smooth);
    z-index: -1;
}

.nav-link:hover::before {
    left: 0;
}

.nav-link:hover {
    color: var(--text-primary);
    transform: translateY(-1px);
    border-color: var(--text-light);
    background: var(--bg-overlay);
}

.nav-link.active {
    background: var(--primary-gradient);
    color: white;
    border-color: rgba(102, 126, 234, 0.5);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.nav-link.active::before {
    left: 0;
}

/* Special Button Styles */
.nav-link.btn-add {
    background: var(--success-gradient);
    color: white;
    font-weight: 700;
    border: 2px solid rgba(79, 172, 254, 0.3);
    box-shadow: 0 4px 15px rgba(79, 172, 254, 0.2);
}

.nav-link.btn-add:hover {
    transform: translateY(-2px);
    border-color: rgba(79, 172, 254, 0.6);
    box-shadow: 0 8px 25px rgba(79, 172, 254, 0.4);
}

.nav-link.btn-logout {
    background: var(--danger-gradient);
    color: white;
    margin-left: 1rem;
    border: 2px solid rgba(250, 112, 154, 0.3);
    box-shadow: 0 4px 15px rgba(250, 112, 154, 0.2);
}

.nav-link.btn-logout:hover {
    transform: translateY(-2px);
    border-color: rgba(250, 112, 154, 0.6);
    box-shadow: 0 8px 25px rgba(250, 112, 154, 0.4);
}

/* Icon Styles */
.nav-icon {
    font-size: 1.3rem;
    transition: var(--transition-smooth);
}

.nav-link:hover .nav-icon {
    transform: scale(1.1);
}

/* Mobile Menu Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: var(--transition-smooth);
}

.mobile-toggle:hover {
    background: var(--bg-overlay);
}

.toggle-line {
    width: 25px;
    height: 3px;
    background: var(--primary-gradient);
    border-radius: 2px;
    transition: var(--transition-smooth);
}

.mobile-toggle.active .toggle-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-toggle.active .toggle-line:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active .toggle-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Dropdown Menus */
.nav-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--nav-border-radius);
    box-shadow: var(--nav-shadow);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-smooth);
    margin-top: 8px;
}

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

.dropdown-item {
    display: block;
    padding: 12px 20px;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-smooth);
    border-radius: 8px;
    margin: 4px 8px;
}

.dropdown-item:hover {
    background: var(--primary-gradient);
    color: white;
    transform: translateX(5px);
}

/* Notification Badge */
.nav-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--danger-gradient);
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 18px;
    text-align: center;
    animation: bounce 1s infinite;
}

/* Search Bar */
.navbar-search {
    position: relative;
    margin: 0 1rem;
}

.search-input {
    padding: 10px 40px 10px 16px;
    border: 2px solid rgba(102, 126, 234, 0.2);
    border-radius: 25px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    font-size: 0.9rem;
    width: 250px;
    transition: var(--transition-smooth);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color, #667eea);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    width: 300px;
}

.search-icon {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.search-icon:hover {
    color: var(--primary-color, #667eea);
}

/* User Profile */
.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 16px;
    border-radius: 25px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: var(--transition-smooth);
    cursor: pointer;
}

.user-profile:hover {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
}

.user-name {
    font-weight: 500;
    color: var(--text-primary);
}

/* Animations */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-5px); }
    60% { transform: translateY(-3px); }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modern-navbar {
    animation: slideIn 0.6s ease-out;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .navbar-container {
        padding: 0 1.5rem;
    }
    
    .search-input {
        width: 200px;
    }
    
    .search-input:focus {
        width: 250px;
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }
    
    .navbar-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        margin: 15px 0 0 0 !important;
        background: var(--bg-glass);
        backdrop-filter: blur(20px);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 15px;
        box-shadow: var(--nav-shadow);
        flex-direction: column;
        padding: 1.5rem;
        gap: 0.8rem;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-20px);
        transition: var(--transition-smooth);
    }
    
    .navbar-nav.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .nav-link {
        width: 100%;
        justify-content: flex-start;
        padding: 16px 24px;
        border-radius: 8px;
        font-size: 1.5rem;
    }
    
    .navbar-search {
        margin: 1rem 0;
        width: 100%;
    }
    
    .search-input {
        width: 100%;
    }
    
    .search-input:focus {
        width: 100%;
    }
    
    .user-profile {
        width: 100%;
        justify-content: flex-start;
        margin-top: 1rem;
        padding: 15px 20px;
    }
    
    .nav-dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        margin: 0.5rem 0;
        background: rgba(255, 255, 255, 0.5);
    }
}

@media (max-width: 480px) {
    .navbar-container {
        padding: 0 1rem;
        height: 60px;
    }
    
    .brand-logo {
        height: 35px;
    }
    
    .brand-text {
        font-size: 1.2rem;
    }
    
    .nav-link {
        font-size: 1.5rem;
        padding: 12px 16px;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #f7fafc;
        --text-secondary: #e2e8f0;
        --text-light: #a0aec0;
        --bg-glass: rgba(26, 32, 44, 0.95);
        --bg-overlay: rgba(255, 255, 255, 0.05);
    }
    
    .modern-navbar {
        border-color: rgba(255, 255, 255, 0.1);
    }
    
    .search-input {
        background: rgba(45, 55, 72, 0.9);
        color: var(--text-primary);
        border-color: rgba(255, 255, 255, 0.2);
    }
    
    .user-profile {
        background: rgba(45, 55, 72, 0.8);
        border-color: rgba(255, 255, 255, 0.2);
    }
}

/* Print Styles */
@media print {
    .modern-navbar {
        display: none;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .nav-link {
        border: 2px solid currentColor;
    }
    
    .nav-link:hover,
    .nav-link.active {
        background: currentColor;
        color: white;
    }
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 55px;
    height: 55px;
    background: var(--primary-gradient);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.4rem;
    cursor: pointer;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
    transition: var(--transition-smooth);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 12px 35px rgba(102, 126, 234, 0.5);
}

.back-to-top:active {
    transform: translateY(-2px) scale(1.05);
}

/* Back to Top Animation */
@keyframes backToTopPulse {
    0%, 100% { 
        box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
    }
    50% { 
        box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
    }
}

.back-to-top.pulse {
    animation: backToTopPulse 2s infinite;
}

/* Mobile Back to Top */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .back-to-top {
        transition: none;
        animation: none;
    }
}