:root {
        --bg-dark: #0A0F1F;
        --text-light: #FFFFFF;
        --accent: #2F8FFF;
        --accent-light: #6FC9FF;
        --navy: #0A2D66;
    }

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

    body {
        font-family: 'Inter', sans-serif;
        background-color: var(--bg-dark);
        color: var(--text-light);
        line-height: 1.6;
        overflow-x: hidden;
        opacity: 0;
        animation: fadeInPage 1.2s ease-in forwards;
    }

    header {
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100px;
        padding: 1rem 0;
        border: none;
    }

    header h1 {
        font-weight: 800;
        font-size: 1.8rem;
        letter-spacing: 1px;
    }

    .hero {
        text-align: center;
        padding: 5rem 1.5rem 4rem;
        max-width: 800px;
        margin: 0 auto;
        opacity: 0;
        transform: translateY(10px);
        animation: fadeInHero 1.5s ease forwards;
        animation-delay: 0.8s;
    }

    .hero h2 {
        font-size: 2.8rem;
        margin-bottom: 1rem;
        color: var(--accent-light);
        line-height: 1.2;
    }

    .hero p {
        font-size: 1.15rem;
        color: #c9c9c9;
        margin-bottom: 2.5rem;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }

    .btn {
        background-color: var(--accent);
        color: white;
        border: none;
        padding: 0.9rem 2rem;
        border-radius: 8px;
        font-size: 1.05rem;
        cursor: pointer;
        transition: all 0.3s ease;
        box-shadow: 0 0 10px rgba(47, 143, 255, 0.3);
        animation: pulseGlow 4s ease-in-out infinite;
        animation-delay: 2s;
        text-decoration: none;
        display: inline-block;
    }

    .btn:hover {
        background-color: var(--accent-light);
        box-shadow: 0 0 25px rgba(111, 201, 255, 0.7);
        transform: translateY(-2px);
    }

    section {
        padding: 4rem 2rem;
        text-align: center;
    }

    section:nth-of-type(2) {
        opacity: 0;
        transform: translateY(10px);
        animation: fadeInFocus 1.5s ease forwards;
        animation-delay: 1.5s;
    }

    .section-title {
        font-size: 2rem;
        margin-bottom: 2rem;
        color: var(--accent-light);
    }

    .cards {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 2rem;
        max-width: 1000px;
        margin: 0 auto;
    }

    .cards .card {
        opacity: 0;
        transform: translateY(20px);
        animation: fadeInCard 1s ease forwards;
        perspective: 1000px;
        transform-style: preserve-3d;
        transition: transform 0.4s ease, box-shadow 0.4s ease;
    }

    .cards .card:hover {
        transform: rotateX(6deg) rotateY(-6deg) translateY(-5px);
        box-shadow: 0 8px 25px rgba(47, 143, 255, 0.25);
        border-color: var(--accent);
    }

    .cards .card:nth-child(1) {
        animation-delay: 1.5s; /* appears right after hero */
    }
    .cards .card:nth-child(2) {
        animation-delay: 1.7s;
    }
    .cards .card:nth-child(3) {
        animation-delay: 1.9s;
    }

    .card {
        background-color: #111728;
        border: 1px solid rgba(255,255,255,0.1);
        border-radius: 12px;
        padding: 2rem;
        transition: transform 0.3s, border 0.3s;
    }

    .card:hover {
        transform: translateY(-5px);
        border-color: var(--accent);
    }

    .logo {
        width: 160px;
        height: auto;
        transition: all 0.3s ease;
        opacity: 0;
        transform: translateY(-10px);
        animation: fadeInLogo 1.5s ease forwards;
    }

    .nav-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 90%;
        max-width: 1100px;
        margin: 0 auto;
    }

    .nav-links {
        opacity: 0;
        transform: translateY(-5px);
        animation: fadeInNav 1.2s ease forwards;
        animation-delay: 1s;
        display: flex;
        gap: 2rem;
    }

    .nav-links a {
        position: relative;
        color: #9eb5d9;
        text-decoration: none;
        font-weight: 500;
        transition: color 0.3s ease;
    }

    .nav-links a::after {
        content: "";
        position: absolute;
        bottom: -3px;
        left: 0;
        width: 0%;
        height: 2px;
        background: linear-gradient(90deg, #2F8FFF, #6FC9FF);
        transition: width 0.3s ease;
    }

    .nav-links a:hover {
        color: #6FC9FF;
    }

    .nav-links a:hover::after {
        width: 100%;
    }

    footer {
        text-align: center;
        padding: 2rem;
        font-size: 0.9rem;
        color: #888;
        border-top: 1px solid rgba(255,255,255,0.1);
    }

    footer a {
        position: relative;
        color: #6FC9FF;
        text-decoration: none;
        font-weight: 600;
        transition: color 0.3s ease;
    }

    footer a::after {
        content: "";
        position: absolute;
        bottom: -3px;
        left: 0;
        width: 0%;
        height: 2px;
        background: linear-gradient(90deg, #2F8FFF, #6FC9FF);
        transition: width 0.3s ease;
    }

    footer a:hover {
        color: #9fdcff;
    }

    footer a:hover::after {
        width: 100%;
    }

    .menu-toggle {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        cursor: pointer;
        transition: all 0.3s ease;
        z-index: 9999; /* keep it above logo */
        width: 32px;
        height: 26px;
        position: relative;
    }

    .menu-toggle span {
        background-color: #6FC9FF;
        height: 3px;
        width: 100%;
        border-radius: 2px;
        margin: 4px 0;
        transition: all 0.3s ease;
        display: block;
        opacity: 1;
    }

    .menu-toggle.open span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .menu-toggle.open span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.open span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .menu-toggle:hover {
        color: #9fdcff;
    }

    @media (max-width: 768px) {
        header {
            height: 90px;
        }
        .logo {
            width: 150px;
        }
        .hero {
            padding: 4rem 1rem 3rem;
        }
        .hero h2 {
            font-size: 2rem;
        }
        .hero p {
            font-size: 1rem;
        }
        .nav-links {
            display: none;
            flex-direction: column;
            align-items: center;
            position: absolute;
            top: 100%;
            right: 0;
            background-color: #0A0F1F;
            width: 100%;
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: 1rem 0;
            z-index: 10;
        }
        .nav-links a {
            display: block;
            padding: 0.75rem 0;
            width: 100%;
            text-align: center;
        }

        .menu-toggle {
            display: block;
        }

        .nav-container {
            justify-content: space-between;
            position: relative;
        }

        .nav-links.active {
            display: flex;
            animation: slideDown 0.3s ease forwards;
            backdrop-filter: blur(8px);
            background-color: rgba(10, 15, 31, 0.8);
        }
    }

    @media (min-width: 769px) {
        .menu-toggle {
            display: none;
        }
    }

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

    @keyframes fadeInLogo {
        0% {
            opacity: 0;
            transform: translateY(-10px);
        }
        100% {
            opacity: 1;
            transform: translateY(0);
        }
    }

    @keyframes fadeInHero {
        0% {
            opacity: 0;
            transform: translateY(10px);
        }
        100% {
            opacity: 1;
            transform: translateY(0);
        }
    }

    @keyframes fadeInFocus {
        0% {
            opacity: 0;
            transform: translateY(10px);
        }
        100% {
            opacity: 1;
            transform: translateY(0);
        }
    }
    ooter a:hover::after {
        width: 100%;
    }
    @keyframes pulseGlow {
        0%, 100% {
            box-shadow: 0 0 10px rgba(47, 143, 255, 0.3);
            transform: scale(1);
        }
        50% {
            box-shadow: 0 0 25px rgba(111, 201, 255, 0.7);
            transform: scale(1.03);
        }
    }
    @keyframes fadeInCard {
        0% {
            opacity: 0;
            transform: translateY(20px);
        }
        100% {
            opacity: 1;
            transform: translateY(0);
        }
    }

    @keyframes fadeInNav {
        0% {
            opacity: 0;
            transform: translateY(-5px);
        }
        100% {
            opacity: 1;
            transform: translateY(0);
        }
    }
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }