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

html {
    scroll-behavior: smooth;
}


body {
    font-family: "Palanquin Dark", sans-serif;
}


nav {
    position: fixed;      
    top: 0;
    left: 0;
    right: 0;
    height: 7rem;
    padding: 1rem 3rem;    
    background: #C3EDFF;
    backdrop-filter: blur(15px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 999;          
}

nav .nav-group {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    width: 130px;
    height: 130px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 3rem;
}

.nav-links li a {
    font-size: 1.25rem;
    font-weight: 600;
    text-decoration: none;
    color: rgb(10, 67, 40);
}

.nav-links li a:hover {
    background: #4B7AA6;
    padding: 1rem;
    border-radius: 50px;
    color: white;
    transition: 0.5s;
}

.btns {
    display: flex;
    align-items: center;
    gap: 10px; 
}

.username {
    font-weight: 600;
    color: #fff;
    background: #281fff;
    padding: 8px 12px;
    border-radius: 12px;
}

.btn {
    padding: 0.5rem;
    border-radius: 30px;
    background: #4B7AA6;
    border: none;
    font-weight: bold;
    font-size: 15px;
    margin: 3px;
    color: white;
    cursor: pointer;
    text-decoration: none;
}

.btn:hover {
    background: #2c7848;
}

/* Hamburger Button */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger div {
    width: 25px;
    height: 3px;
    background-color: rgb(10, 67, 40);
    transition: 0.3s;
}


.main {
    margin-top: 5rem;
    padding: 4rem;
    gap: 5rem;
    background-image: linear-gradient(to bottom, #c2edff, #ffffff);
}

.hero-text {
    flex: 1;
    min-width: 280px;
    text-align: center;
}

.hero-text .tagline {
    font-size: 6vw;
    line-height: 1.2;
    animation: drop-down 3s ease-out forwards; 
}

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

.hero-text .semi {
    font-size: 2vw;
    line-height: 1.4;
}


.description {
    padding: 10rem;
    margin-top: 1%;
    width: 100%;
    text-align: center;
    background: #bce5f7;  
}

.dtntitle { font-size: 42px; margin-bottom: 1rem; }
.dtn { padding: 1rem 3rem; font-size: 24px; }


.heading-section {
    display: flex;
    gap: 3rem;
    padding: 4rem 2rem;
    max-width: 100%;
    margin: -0.5rem auto 2rem auto;
    background: linear-gradient(135deg, #5BC3D5 0%, #30666F 100%);
    color: white;
    align-items: center;
    flex-wrap: wrap;
}

.heading-text { flex: 1; }
.heading-text h2 { font-size: 2rem; margin-bottom: 0.5rem; }
.heading-text h4 { font-size: 1.25rem; margin-bottom: 1rem; font-weight: normal; }
.heading-text p { line-height: 1.6; margin-bottom: 1rem; }

.heading-image { flex: 1; text-align: center; }
.heading-image img { max-width: 100%; border-radius: 15px; box-shadow: 0 10px 25px rgba(0,0,0,0.2); }


.features-section {
    background-color: #b7d7e5;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    padding: 4rem 2rem;
    width:100%;
    margin: 2rem auto 4rem auto;
    margin-top :-3rem;
    margin-bottom :-5rem;
    
}

.feature-card {
    background-color: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.feature-card .icon { font-size: 2rem; margin-bottom: 1rem; }
.feature-card h3 { font-size: 1.25rem; margin-bottom: 0.75rem; }
.feature-card p { font-size: 0.95rem; color: #555; line-height: 1.5; }


@media (max-width: 1024px) {
    .main { gap: 3rem; padding: 2rem; }
    .hero-text .tagline { font-size: 5vw; }
    .hero-text .semi { font-size: 2.5vw; }
}

@media (max-width: 768px) {
    nav { flex-direction: row; justify-content: space-between; height: auto; padding: 1rem 2rem; }
    .nav-links { 
        position: absolute;
        top: 7rem;
        left: 0;
        right: 0;
        background: #C3EDFF;
        flex-direction: column;
        gap: 1rem;
        display: none;
        padding: 1rem 0;
        border-top: 1px solid #ddd;
    }
    .nav-links.show { display: flex; }
    .hamburger { display: flex; }

    .main { flex-direction: column; padding: 1.5rem; margin-top: 10rem; }
    .hero-text .tagline { font-size: 8vw; }
    .hero-text .semi { font-size: 4vw; }
    .description { padding: 1.5rem; }
    .dtntitle { font-size: 28px; }
    .dtn { font-size: 16px; padding: 1rem; }
    .heading-section { flex-direction: column; text-align: center; }
    .heading-image { margin-top: 2rem; }
}
footer {
    background: #30666F;
    color: white;
    text-align: center;
    padding: 3rem 1rem;
    margin-top: 4rem;
}

footer h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

footer p {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}