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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f8fafc;
    color: #1f2937;
    line-height: 1.6;
}

/* NAVBAR */

nav {

    background: #0f172a;

    padding: 15px 40px;

    display: flex;

    justify-content: center;

    align-items: center;

}

nav ul {

    display: flex;

    gap: 40px;

    list-style: none;

}

nav a {

    text-decoration: none;

    color: white;

    font-weight: bold;

    transition: .3s;

}

nav a:hover {

    color: #60a5fa;

}
.dropdown {

    position: relative;

}

.dropdown-content {

    display: none;

    position: absolute;

    background: white;

    min-width: 220px;

    box-shadow: 0 8px 20px rgba(0,0,0,.15);

    border-radius: 10px;

    top: 100%;

    left: 0;

    overflow: hidden;

    z-index: 999;

}

.dropdown-content a {

    display: block;

    color: #1f2937;

    padding: 12px 15px;

    text-decoration: none;

    font-weight: normal;

}

.dropdown-content a:hover {

    background: #f1f5f9;

    color: #2563eb;

}

.dropdown:hover .dropdown-content {

    display: block;

}
/* LOGO BANNER */

.logo-banner {

    background: white;

    text-align: center;

    padding: 20px 20px;

    border-bottom: 1px solid #e5e7eb;

}

.logo-banner img {

    width: 180px;

}

/* HERO */

.hero {

    background: linear-gradient(
        135deg,
        #0f172a,
        #1e3a8a
    );

    color: white;

    text-align: center;

    padding: 80px 20px;

}

.hero h1 {

    font-size: 4rem;

    line-height: 1.1;

    margin-bottom: 25px;

}

.hero p {

    font-size: 1.3rem;

    max-width: 900px;

    margin: auto;

    margin-bottom: 25px;

}

.tech-stack {

    margin-bottom: 35px;

    opacity: .9;

}

.btn {

    display: inline-block;

    background: white;

    color: #1e3a8a;

    text-decoration: none;

    padding: 15px 30px;

    border-radius: 50px;

    font-weight: bold;

    margin: 10px;

    transition: .3s;

}

.btn:hover {

    transform: translateY(-3px);

}

/* PROBLEM SECTION */

.problem-section {

    text-align: center;

    padding: 80px 20px;

    background: white;

}

.problem-section h2 {

    font-size: 2.5rem;

    margin-bottom: 25px;

}

.problem-section p {

    max-width: 900px;

    margin: auto;

}

/* CONTENT SECTIONS */

.section {

    max-width: 1200px;

    margin: auto;

    padding: 60px 20px 20px 20px;

}

.section h2 {

    text-align: center;

    font-size: 2.5rem;

    margin-bottom: 50px;

}

/* CARDS */

.cards {

    display: flex;

    flex-wrap: wrap;

    gap: 25px;

}

.card {

    flex: 1;

    min-width: 280px;

    background: white;

    padding: 30px;

    border-radius: 15px;

    box-shadow: 0 5px 20px rgba(0,0,0,.08);

    transition: .3s;

}

.card:hover {

    transform: translateY(-8px);

}

.card h3 {

    color: #2563eb;

    margin-bottom: 15px;

}

/* ABOUT */

.about {

    background: #f1f5f9;

    text-align: center;

    padding: 80px 20px;

}

.about p {

    max-width: 900px;

    margin: auto;

}

/* FOOTER */

.footer {

    background: #0f172a;

    color: white;

    text-align: center;

    padding: 60px 20px;

    width: 100vw;

    margin-left: calc(50% - 50vw);

    margin-right: calc(50% - 50vw);

    border-top: 4px solid #2563eb;

}
.footer h2 {

    margin-bottom: 25px;

}

.footer-links {

    display: flex;

    justify-content: center;

    gap: 15px;

    flex-wrap: wrap;

    margin-bottom: 25px;

}

.footer p {

    margin-bottom: 15px;

    opacity: .9;

}

.footer small {

    opacity: .7;

}

/* MOBILE */

@media(max-width:900px){

    nav ul {

        flex-wrap: wrap;

        justify-content: center;

        gap: 20px;

    }

    .hero h1 {

        font-size: 2.5rem;

    }

    .logo-banner img {

        width: 180px;

    }

}
.dark-section {

    background: #f1f5f9;

    border-radius: 20px;

}
.social-button {

    display: inline-block;

    background: #2563eb;

    color: white;

    text-decoration: none;

    padding: 12px 24px;

    border-radius: 8px;

    font-weight: bold;

    transition: .3s;

}

.social-button:hover {

    background: #1d4ed8;

}
.card p {

    max-width: 800px;

}
.founder-card {

    text-align: center;

    max-width: 1000px;

    margin: auto;

}

.founder-card h3 {

    font-size: 2rem;

    margin-bottom: 20px;

}

.founder-card p {

    max-width: 850px;

    margin: auto;

    line-height: 1.8;

}