:root {
    --primary-color: #003399;
    --secondary-color: #0066cc;
    --accent-color: #ff9900;
    --text-color: #333333;
    --light-bg: #f5f5f5;
    --white: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-bg);
    overflow-x: hidden;
}

/* Navbar Styles */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--white);
    box-shadow: var(--shadow);
    z-index: 1000;
    padding: 1rem 0;
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    font-size: 1.1rem;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Mobile menu active state */
.nav-links.active {
    display: flex;
}

/* Hero Section */
.hero {
    min-height: 50vh;
    background: linear-gradient(rgba(0, 51, 153, 0.9), rgba(0, 102, 204, 0.9));
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    padding: 2rem;
    margin-top: 60px;
    margin-bottom: 2rem;
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
    color: var(--white);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.2s;
    opacity: 0;
    animation-fill-mode: forwards;
    color: var(--white);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: var(--accent-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    animation: fadeInUp 1s ease 0.4s;
    opacity: 0;
    animation-fill-mode: forwards;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

/* Main Content */
main {
    padding: 2rem;
    background-color: var(--light-bg);
    max-width: 1400px;
    margin: 0 auto;
}

/* Section Styles */
.section {
    padding: 3rem 2rem;
    background-color: var(--white);
    margin-bottom: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.section h2 i {
    margin-right: 1rem;
    color: var(--accent-color);
}

/* Statistics Section */
.stats-container {
    text-align: center;
    margin-bottom: 2rem;
}

.stats-image {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin: 0 auto;
    display: block;
}

/* Rankings Grid */
.rankings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.ranking-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.1);
    height: 100%;
}

.ranking-card:hover {
    transform: translateY(-5px);
}

.ranking-card i {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.ranking-card h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.ranking-card p {
    color: var(--text-color);
    font-size: 1.1rem;
}

.advantages-image {
    margin-top: 2rem;
    text-align: center;
}

.advantages-image img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

/* Advantages Grid */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.advantage-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.1);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.advantage-card:hover {
    transform: translateY(-5px);
}

.advantage-card i {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.advantage-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.advantage-content {
    flex: 1;
}

.advantage-content h4 {
    color: var(--secondary-color);
    margin: 1rem 0;
    font-size: 1.2rem;
}

.advantage-content ul {
    list-style-position: inside;
    margin: 1rem 0;
    color: var(--text-color);
}

.advantage-content li {
    margin: 0.5rem 0;
    font-size: 1.1rem;
}

.digital-id-image {
    width: 100%;
    height: auto;
    border-radius: 10px;
    margin: 1rem 0;
    box-shadow: var(--shadow);
}

/* Sectors Grid */
.sectors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.sector-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.1);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.sector-card:hover {
    transform: translateY(-5px);
}

.sector-card i {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.sector-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.sector-card p {
    color: var(--text-color);
    font-size: 1.1rem;
}

/* Incentives Container */
.incentives-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.incentive-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.1);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.incentive-card:hover {
    transform: translateY(-5px);
}

.incentive-card i {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.incentive-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.incentive-card p {
    color: var(--text-color);
    font-size: 1.1rem;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.service-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.1);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.service-card:hover {
    transform: translateY(-5px);
}

.service-card i {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.service-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.service-card p {
    color: var(--text-color);
    font-size: 1.1rem;
}

/* Footer */
footer {
    background: var(--primary-color);
    color: var(--white);
    padding: 2rem;
    text-align: center;
    margin-top: 2rem;
}

footer a {
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 600;
}

footer a:hover {
    color: var(--white);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Image loading animation */
img {
    opacity: 0.6;
    transition: opacity 0.3s ease-in-out;
}

img.loaded {
    opacity: 1;
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0.6; }
    to { opacity: 1; }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        flex-direction: column;
        background-color: var(--white);
        box-shadow: var(--shadow);
        padding: 1rem 0;
        text-align: center;
        z-index: 999;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a {
        padding: 0.75rem 0;
    }

    .menu-btn {
        display: block;
    }

    .hero {
        min-height: 40vh;
        margin-top: 50px;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.2rem;
    }

    .section {
        padding: 2rem 1rem;
    }

    .section h2 {
        font-size: 2rem;
    }

    .rankings-grid, .advantages-grid, .sectors-grid, .incentives-container, .services-grid {
        grid-template-columns: 1fr;
    }
}

/* Tablet Styles */
@media (min-width: 769px) and (max-width: 1024px) {
    .rankings-grid, .advantages-grid, .sectors-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .section {
        padding: 2.5rem 1.5rem;
    }
    
    .hero h1 {
        font-size: 3rem;
    }
}

/* Accessibility Improvements */
a:focus, button:focus, .cta-button:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.ranking-card:focus-within, .advantage-card:focus-within, 
.sector-card:focus-within, .incentive-card:focus-within, 
.service-card:focus-within {
    box-shadow: 0 0 0 2px var(--accent-color), var(--shadow);
}

/* Active state for touch devices */
@media (hover: none) {
    .cta-button:active {
        transform: translateY(-3px);
        box-shadow: var(--shadow);
    }
    
    .ranking-card:active, .advantage-card:active, 
    .sector-card:active, .incentive-card:active, 
    .service-card:active {
        transform: translateY(-5px);
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --text-color: #ffffff;
        --light-bg: #1a1a1a;
        --white: #2d2d2d;
    }

    body {
        background: var(--light-bg);
    }

    .section {
        background-color: var(--white);
    }

    .ranking-card, .advantage-card, .sector-card, .incentive-card, .service-card {
        background-color: var(--white);
    }
}