/* Navigation */
.navbar {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.98) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(59, 130, 246, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
    position: sticky;
    top: 0;
    z-index: 50;
    transition: all 0.3s ease;
}

.navbar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.3), transparent);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 5rem;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
}

.nav-brand .brand-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--gray-900);
    text-decoration: none;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 1rem;
    position: relative;
    overflow: hidden;
}

.nav-brand .brand-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left 0.5s ease;
}

.nav-brand .brand-link:hover::before {
    left: 100%;
}

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

.brand-icon {
    width: 2.5rem;
    height: 2.5rem;
    color: var(--primary);
    filter: drop-shadow(0 2px 4px rgba(59, 130, 246, 0.2));
    transition: all 0.3s ease;
}

.nav-brand .brand-link:hover .brand-icon {
    transform: rotate(5deg) scale(1.05);
    filter: drop-shadow(0 4px 8px rgba(59, 130, 246, 0.3));
}

.brand-text {
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), #8B5CF6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.025em;
}

.nav-menu {
    display: none;
    gap: 0.5rem;
    align-items: center;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 2rem;
    padding: 0.5rem;
    border: 1px solid rgba(59, 130, 246, 0.1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.nav-link {
    position: relative;
    padding: 0.75rem 1.25rem;
    border-radius: 1.5rem;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--gray-700);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    overflow: hidden;
    white-space: nowrap;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary), #8B5CF6);
    opacity: 0;
    transition: all 0.3s ease;
    border-radius: 1.5rem;
    transform: scale(0.8);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), #8B5CF6);
    transition: all 0.3s ease;
    transform: translateX(-50%);
    border-radius: 1px;
}

.nav-link:hover::before {
    opacity: 0.1;
    transform: scale(1);
}

.nav-link:hover::after {
    width: 80%;
}

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

.nav-link.active {
    color: var(--white);
    background: linear-gradient(135deg, var(--primary), #8B5CF6);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
    transform: translateY(-1px);
}

.nav-link.active::before {
    display: none;
}

.nav-link.active::after {
    display: none;
}

.nav-auth {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.nav-auth .btn {
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 1.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.nav-auth .btn-outline {
    background: rgba(255, 255, 255, 0.8);
    border: 2px solid rgba(59, 130, 246, 0.2);
    color: var(--primary);
    backdrop-filter: blur(10px);
}

.nav-auth .btn-outline::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary), #8B5CF6);
    transition: left 0.4s ease;
    z-index: -1;
}

.nav-auth .btn-outline:hover::before {
    left: 0;
}

.nav-auth .btn-outline:hover {
    color: var(--white);
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.3);
}

.nav-auth .btn-primary {
    background: linear-gradient(135deg, var(--primary), #8B5CF6);
    border: 2px solid transparent;
    color: var(--white);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.nav-auth .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.4);
    background: linear-gradient(135deg, #2563EB, #7C3AED);
}

.nav-user {
    position: relative;
}

.user-dropdown {
    position: relative;
}

.user-button {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(59, 130, 246, 0.1);
    border-radius: 2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.user-button:hover {
    background: rgba(255, 255, 255, 1);
    border-color: rgba(59, 130, 246, 0.2);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.user-avatar {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), #8B5CF6);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--white);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.user-name {
    font-weight: 600;
    color: var(--gray-900);
    font-size: 0.875rem;
}

.user-button svg {
    color: var(--gray-500);
    transition: transform 0.3s ease;
}

.user-button:hover svg {
    transform: rotate(180deg);
}

.user-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 1rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    padding: 0.5rem;
    min-width: 12rem;
    z-index: 10;
    border: 1px solid rgba(59, 130, 246, 0.1);
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.user-menu:not(.hidden) {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

.user-menu a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--gray-700);
    border-radius: 0.75rem;
    transition: all 0.3s ease;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    position: relative;
    overflow: hidden;
}

.user-menu a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-light), rgba(139, 92, 246, 0.1));
    transition: left 0.3s ease;
}

.user-menu a:hover::before {
    left: 0;
}

.user-menu a:hover {
    color: var(--primary);
    transform: translateX(4px);
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 3rem;
    height: 3rem;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(59, 130, 246, 0.1);
    border-radius: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.nav-toggle:hover {
    background: rgba(255, 255, 255, 1);
    border-color: rgba(59, 130, 246, 0.2);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.hamburger {
    width: 1.25rem;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), #8B5CF6);
    transition: all 0.3s ease;
    position: relative;
    border-radius: 1px;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 1.25rem;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), #8B5CF6);
    transition: all 0.3s ease;
    border-radius: 1px;
}

.hamburger::before {
    top: -6px;
}

.hamburger::after {
    bottom: -6px;
}

.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.nav-toggle.active .hamburger::after {
    transform: rotate(-45deg);
    bottom: 0;
}

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

@media (max-width: 1023px) {
    .nav-container {
        padding: 0 1.5rem;
        height: 4.5rem;
    }
    
    .nav-menu {
        position: absolute;
        top: calc(100% + 1rem);
        left: 1.5rem;
        right: 1.5rem;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        border: 1px solid rgba(59, 130, 246, 0.1);
        border-radius: 1.5rem;
        flex-direction: column;
        padding: 1rem;
        gap: 0.25rem;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        opacity: 0;
        transform: translateY(-20px);
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        pointer-events: none;
    }
    
    .nav-menu.active {
        display: flex;
        opacity: 1;
        transform: translateY(0);
        pointer-events: all;
    }
    
    .nav-link {
        width: 100%;
        text-align: center;
        padding: 1rem 1.5rem;
        border-radius: 1rem;
    }
    
    .nav-auth {
        display: none;
    }
    
    .brand-text {
        font-size: 1.5rem;
    }
    
    .brand-icon {
        width: 2rem;
        height: 2rem;
    }
}

@media (max-width: 640px) {
    .nav-container {
        padding: 0 1rem;
        height: 4rem;
    }
    
    .brand-text {
        font-size: 1.25rem;
    }
    
    .brand-icon {
        width: 1.75rem;
        height: 1.75rem;
    }
    
    .nav-menu {
        left: 1rem;
        right: 1rem;
    }
}

/* Scroll effect */
.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(25px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.navbar.scrolled::before {
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.4), transparent);
}

/* Footer */
.footer {
    background-color: var(--gray-900);
    color: var(--white);
    padding: var(--space-12) 0 var(--space-8);
    margin-top: var(--space-20);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
}

.footer-brand .brand-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--white);
    margin-bottom: var(--space-4);
}

.footer-brand .brand-icon {
    width: 2rem;
    height: 2rem;
    color: var(--primary-light);
}

.footer-brand .brand-text {
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-description {
    color: var(--gray-300);
    margin-bottom: var(--space-4);
    max-width: 28rem;
}

.footer-contact {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--gray-300);
}

.contact-item svg {
    width: 1rem;
    height: 1rem;
    color: var(--primary-light);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-6);
}

.link-group h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-4);
    color: var(--white);
}

.link-group a {
    display: block;
    color: var(--gray-300);
    margin-bottom: var(--space-2);
    transition: var(--transition);
}

.link-group a:hover {
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    margin-top: var(--space-8);
    padding-top: var(--space-8);
    text-align: center;
}

.footer-bottom p {
    color: var(--gray-400);
    margin: 0;
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 2fr 1fr;
    }
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 100;
    padding: var(--space-4);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease-out;
}

.modal-content {
    background-color: var(--white);
    border-radius: var(--radius-2xl);
    max-width: 28rem;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: fadeIn 0.3s ease-out;
}

.modal-content.large {
    max-width: 64rem;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-6) var(--space-6) 0;
    border-bottom: 1px solid var(--gray-200);
    padding-bottom: var(--space-6);
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-500);
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--gray-700);
    background-color: var(--gray-100);
}

.modal-body {
    padding: var(--space-6);
}

/* Stats Grid */
.stats {
    background-color: var(--white);
    padding: var(--space-16) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--space-2);
}

.stat-label {
    color: var(--gray-600);
    font-weight: 500;
}

.stat-card {
    background-color: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--space-6);
}

.stat-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stat-info .stat-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
    margin-bottom: var(--space-1);
}

.stat-info .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}

.stat-icon {
    padding: var(--space-3);
    border-radius: var(--radius-lg);
    color: var(--white);
}

.stat-icon svg {
    width: 1.5rem;
    height: 1.5rem;
}

@media (min-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-4);
}

.section-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 48rem;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.5rem;
    }
}

/* Page Headers */
.page-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-4);
}

.page-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 48rem;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .page-title {
        font-size: 3rem;
    }
}

/* Loading Spinner */
.spinner {
    width: 1.5rem;
    height: 1.5rem;
    border: 2px solid var(--gray-200);
    border-top: 2px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Alerts */
.alert {
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
}

.alert-success {
    background-color: var(--secondary-light);
    color: var(--secondary-dark);
    border: 1px solid var(--secondary);
}

.alert-warning {
    background-color: var(--accent-light);
    color: var(--accent-dark);
    border: 1px solid var(--accent);
}

.alert-error {
    background-color: #FEE2E2;
    color: #DC2626;
    border: 1px solid var(--error);
}

.alert-info {
    background-color: var(--primary-light);
    color: var(--primary-dark);
    border: 1px solid var(--primary);
}