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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #07111f;
    color: #ffffff;
    line-height: 1.6;
}


/* HEADER */

.header {
    min-height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;

    padding: 0 7%;

    border-bottom: 1px solid rgba(255,255,255,0.08);

    position: sticky;
    top: 0;

    background: rgba(7,17,31,0.94);
    backdrop-filter: blur(14px);

    z-index: 100;
}


.logo {
    color: #ffffff;
    text-decoration: none;
    font-size: 23px;
    font-weight: 800;
    letter-spacing: 3px;
}



nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

nav a {
    color: #b9c6d8;
    text-decoration: none;
    font-size: 14px;
}

nav a:hover {
    color: #ffffff;
}

.login-btn {
    border: 1px solid rgba(255,255,255,0.35);
    padding: 9px 20px;
    border-radius: 25px;
}


/* HERO */

.hero {
    min-height: 82vh;

    display: flex;
    align-items: center;

    padding: 90px 8%;

    background:
        radial-gradient(
            circle at 75% 25%,
            rgba(0,180,255,0.20),
            transparent 35%
        ),
        radial-gradient(
            circle at 20% 80%,
            rgba(89,70,255,0.18),
            transparent 35%
        );
}

.hero-content {
    max-width: 850px;
}

.tag {
    display: inline-block;

    color: #57d9ff;

    font-size: 13px;
    letter-spacing: 2px;

    margin-bottom: 25px;
}

.hero h1 {
    font-size: clamp(48px, 7vw, 88px);
    line-height: 1.03;

    max-width: 900px;

    margin-bottom: 30px;
}

.hero p {
    color: #a9b8ca;

    max-width: 670px;

    font-size: 19px;

    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

.primary-btn,
.secondary-btn {
    text-decoration: none;

    padding: 13px 24px;

    border-radius: 25px;

    font-size: 14px;
}

.primary-btn {
    background: #ffffff;
    color: #07111f;
}

.secondary-btn {
    border: 1px solid rgba(255,255,255,0.25);
    color: #ffffff;
}


/* SECTIONS */

.section {
    padding: 110px 8%;
}

.dark-section {
    background: #0b1728;
}

.section-heading {
    display: flex;
    align-items: center;
    gap: 18px;

    margin-bottom: 20px;
}

.section-heading span {
    color: #50d4ff;
    font-size: 13px;
}

.section-heading h2 {
    font-size: 42px;
}

.section-intro {
    max-width: 700px;
    color: #9fb0c5;
    font-size: 18px;

    margin-bottom: 55px;
}


/* CARDS */

.cards {
    display: grid;

    grid-template-columns:
        repeat(3, minmax(0, 1fr));

    gap: 22px;
}

.card {
    padding: 34px;

    min-height: 230px;

    border: 1px solid rgba(255,255,255,0.08);

    border-radius: 18px;

    background: rgba(255,255,255,0.025);
}

.card h3 {
    margin-bottom: 16px;
    font-size: 21px;
}

.card p {
    color: #9baabe;
}


/* SOLUTIONS */

.solution-grid {
    display: grid;

    grid-template-columns:
        repeat(4, minmax(0, 1fr));

    gap: 14px;
}

.solution-grid div {
    padding: 26px;

    border: 1px solid rgba(255,255,255,0.08);

    border-radius: 14px;

    background: rgba(255,255,255,0.025);
}


/* ABOUT */

.about {
    padding: 130px 8%;
}

.about span {
    color: #50d4ff;

    font-size: 13px;
    letter-spacing: 2px;
}

.about h2 {
    max-width: 900px;

    font-size: clamp(38px, 5vw, 65px);
    line-height: 1.12;

    margin: 22px 0;
}

.about p {
    max-width: 650px;

    color: #9facbd;

    font-size: 18px;
}


/* FOOTER */

footer {
    padding: 60px 8%;

    border-top: 1px solid rgba(255,255,255,0.08);

    color: #8f9caf;
}

.footer-logo {
    color: #ffffff;

    font-weight: bold;
    letter-spacing: 3px;

    margin-bottom: 10px;
}

.copyright {
    margin-top: 20px;
    font-size: 13px;
}


/* MOBILE */

@media (max-width: 850px) {

    nav a:not(.login-btn) {
        display: none;
    }

    .header {
        padding: 0 5%;
    }

    .hero,
    .section,
    .about {
        padding-left: 6%;
        padding-right: 6%;
    }

    .hero h1 {
        font-size: 50px;
    }

    .cards {
        grid-template-columns: 1fr;
    }

    .solution-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr));
    }
}