:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --accent-color: #f59e0b;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --text-color: #334155;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-color);
}

/* Header Styles */
.header {
    background: linear-gradient(135deg, var(--dark-color) 0%, #334155 100%);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 1rem;
    padding-right: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo img {
    height: 60px;
    transition: transform 0.3s ease;
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.nav-link.active {
    background-color: var(--primary-color);
}

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

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

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

.dropdown-item {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-color);
    text-decoration: none;
    transition: background-color 0.2s ease;
}

.dropdown-item:hover {
    background-color: var(--light-color);
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Main Content */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Cards */
.card {
    background: white;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.card-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(135deg, var(--light-color) 0%, white 100%);
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #3b82f6 100%);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1d4ed8 0%, var(--primary-color) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #6b7280 100%);
    color: white;
}

.btn-success {
    background: linear-gradient(135deg, #059669 0%, #10b981 100%);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, #dc2626 0%, #ef4444 100%);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, var(--accent-color) 0%, #fbbf24 100%);
    color: white;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark-color);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    background-color: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Grid System */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: -0.5rem;
}

.col {
    flex: 1;
    padding: 0.5rem;
}

.col-1 { flex: 0 0 8.333333%; }
.col-2 { flex: 0 0 16.666667%; }
.col-3 { flex: 0 0 25%; }
.col-4 { flex: 0 0 33.333333%; }
.col-6 { flex: 0 0 50%; }
.col-8 { flex: 0 0 66.666667%; }
.col-9 { flex: 0 0 75%; }
.col-12 { flex: 0 0 100%; }

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 3rem; }

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--dark-color) 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* News Grid */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.news-card {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.news-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.news-content {
    padding: 1.5rem;
}

.news-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.news-excerpt {
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: var(--secondary-color);
}

/* Footer */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: white;
}

.footer-section p,
.footer-section a {
    color: #94a3b8;
    text-decoration: none;
    line-height: 1.6;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 2rem;
    text-align: center;
    color: #94a3b8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--dark-color);
        flex-direction: column;
        padding: 1rem;
        gap: 0;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-link {
        width: 100%;
        text-align: left;
        padding: 1rem;
        border-bottom: 1px solid #334155;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .col-md-4,
    .col-md-6,
    .col-md-8,
    .col-md-9,
    .col-md-12 {
        flex: 0 0 100%;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
}

/* Animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Loading */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Modal Improvements */
.modal {
    backdrop-filter: blur(5px);
}

.modal-content {
    border: none;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(135deg, var(--light-color) 0%, white 100%);
}

/* Toast Notifications */
.toast {
    position: fixed;
    top: 2rem;
    right: 2rem;
    background: white;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-lg);
    padding: 1rem 1.5rem;
    z-index: 1050;
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.toast.show {
    transform: translateX(0);
}

.toast.success {
    border-left: 4px solid #10b981;
}

.toast.error {
    border-left: 4px solid #ef4444;
}