:root {
    --primary-blue: #0A2540;
    --accent-green: #9EFA73;
    --text-light: #EAECEF;
    --text-dark: #333333;
    --white: #FFFFFF;
    --font-family: 'Montserrat', sans-serif;
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 10px 30px rgba(0, 0, 0, 0.3);
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.6s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--primary-blue);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* === NAVIGATION === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 37, 64, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 5%;
    transition: var(--transition-medium);
}

.navbar.scrolled {
    background: rgba(10, 37, 64, 0.98);
    box-shadow: var(--shadow-medium);
}

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

.logo {
    height: 40px;
    width: auto;
    transition: var(--transition-fast);
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    padding: 10px 0;
    transition: var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--accent-green);
}

.nav-link.active {
    color: var(--accent-green);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-green);
    transition: var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

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

.dropdown-content {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--primary-blue);
    min-width: 200px;
    box-shadow: var(--shadow-medium);
    border-radius: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-medium);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.dropdown-content a {
    display: block;
    padding: 12px 20px;
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition-fast);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.dropdown-content a:last-child {
    border-bottom: none;
}

.dropdown-content a:hover {
    background: rgba(158, 250, 115, 0.1);
    color: var(--accent-green);
}

/* Mobile Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-light);
    transition: var(--transition-fast);
}

/* === HERO SECTION === */
.hero {
    background: linear-gradient(180deg, var(--primary-blue) 80%, #061a2f 100%);
    padding: 120px 5% 80px 5%;
    text-align: center;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    max-width: 1000px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--white);
    margin-bottom: 20px;
    opacity: 0;
    animation: fadeInUp 1s ease forwards 0.2s;
}

.hero .subtitle {
    font-size: 1.3rem;
    max-width: 700px;
    margin: 0 auto 40px auto;
    color: #c0d0e0;
    opacity: 0;
    animation: fadeInUp 1s ease forwards 0.4s;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 50px;
    opacity: 0;
    animation: fadeInUp 1s ease forwards 0.6s;
}

.btn {
    display: inline-block;
    padding: 15px 30px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition-fast);
    cursor: pointer;
    border: none;
    font-family: var(--font-family);
}

.btn-primary {
    background: var(--accent-green);
    color: var(--primary-blue);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(158, 250, 115, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text-light);
    border: 2px solid var(--text-light);
}

.btn-secondary:hover {
    background: var(--text-light);
    color: var(--primary-blue);
    transform: translateY(-3px);
}

.video-container {
    max-width: 900px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-heavy);
    border: 2px solid rgba(255, 255, 255, 0.1);
    opacity: 0;
    animation: fadeInUp 1s ease forwards 0.8s;
}

.video-container video {
    width: 100%;
    display: block;
}

/* === MAIN CONTENT === */
main {
    padding: 0 5%;
}

.section {
    padding: 80px 0;
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-slow);
}

.section.visible {
    opacity: 1;
    transform: translateY(0);
}

.section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 30px;
}

.section h3 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--accent-green);
    margin-bottom: 20px;
}

.section p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 20px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* === PROBLEM SECTION === */
.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.problem-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-medium);
}

.problem-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow-medium);
}

.stat {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--accent-green);
    margin-bottom: 15px;
    display: block;
}

/* === SOLUTION SECTION === */
.solution-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-medium);
    text-align: left;
}

.feature-card:hover {
    transform: translateY(-5px);
    background: rgba(158, 250, 115, 0.1);
    border-color: var(--accent-green);
}

.feature-icon {
    font-size: 2rem;
    color: var(--accent-green);
    margin-bottom: 15px;
}

.feature-card h4 {
    color: var(--white);
    font-size: 1.2rem;
    margin-bottom: 10px;
}

/* === CTA SECTIONS === */
.cta-section {
    background: linear-gradient(135deg, #061a2f 0%, var(--primary-blue) 100%);
    border-radius: 16px;
    padding: 60px 40px;
    margin: 80px 0;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.cta-section h2 {
    margin-bottom: 20px;
}

.cta-section p {
    margin-bottom: 30px;
    font-size: 1.2rem;
}

/* === FOOTER === */
footer {
    background: #061a2f;
    padding: 60px 5% 30px 5%;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    color: var(--white);
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--accent-green);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #a0b0c0;
    font-size: 0.9rem;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--primary-blue);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 50px;
        transition: var(--transition-medium);
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .dropdown-content {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background: transparent;
        margin-top: 10px;
    }

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

    .hero .subtitle {
        font-size: 1.1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

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

    .problem-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .solution-features {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 100px 5% 60px 5%;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .section {
        padding: 60px 0;
    }

    .section h2 {
        font-size: 1.8rem;
    }

    .cta-section {
        padding: 40px 20px;
        margin: 60px 0;
    }
}