/* ===========================
   GLOBAL STYLES
=========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    background: linear-gradient(to bottom right, #e7f1ff, #ffffff);
    background-attachment: fixed;
    color: #222;
}

/* ===========================
   HEADER & NAVIGATION
=========================== */
header {
    background: #1f2d3a;
    padding: 15px 40px;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    color: #fff;
    font-size: 24px;
    font-weight: 700;
}

.navbar ul {
    display: flex;
    list-style: none;
    flex-wrap: wrap;
    padding-left: 0;
    margin: 0;
}

.navbar li {
    margin-left: 15px;
}

.navbar a {
    color: #fff;
    text-decoration: none;
    padding: 10px 15px;
}

.navbar a:hover,
.navbar a.active {
    background: #3a4b5a;
    border-radius: 6px;
}

/* ===========================
   HERO SECTION
=========================== */
.hero {
    height: 75vh;
    background: url('images/hero.jpg') center/cover no-repeat;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    text-shadow: 0 2px 6px rgba(0,0,0,0.8);
    text-align: center;
    padding: 20px;
}

.hero h1 {
    font-size: 52px;
}

.hero p {
    font-size: 22px;
    margin-top: 10px;
}

/* ===========================
   SECTIONS & CONTAINERS
=========================== */
section {
    padding: 60px 40px;
    text-align: center;
}

.container {
    max-width: 900px;
    margin: auto;
}

/* ===========================
   ABOUT PAGE STYLES
=========================== */
.about-section {
    padding: 40px 20px;
    background: white;
    text-align: left;
}

.about-section h2 {
    margin-top: 30px;
    margin-bottom: 20px;
    color: #333;
}

.about-section p {
    margin-bottom: 15px;
    line-height: 1.6;
}

/* ===========================
   CHALLENGES SECTION
=========================== */
.challenges {
    margin-top: 40px;
    padding: 30px;
    border-radius: 10px;
    background: #f9f9f9; /* light gray background */
}

.challenges h2 {
    color: #333;
    margin-bottom: 20px;
    text-align: left;
    font-size: 24px;
}

.challenges ul {
    list-style: none; /* removes bullets */
    padding-left: 0;
    margin-left: 0;
}


.challenges ul li {
    background: #ffffff; /* white box for each challenge */
    border-left: 4px solid #1f2d3a; /* colored bar instead of bullet */
    padding: 12px 15px;
    margin-bottom: 12px;
    border-radius: 6px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.1);
    line-height: 1.6;
}



/* ===========================
   GALLERY GRID
=========================== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.gallery-grid img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

/* ===========================
   IMAGE SIZES
=========================== */
.image4,
.image5 {
    height: 200px;
    width: 50px; 
}

/* ===========================
   FOOTER
=========================== */
footer {
    background: #1f2d3a;
    color: white;
    text-align: center;
    padding: 20px;
    margin-top: 40px;
}

/* ===========================
   RESPONSIVE DESIGN TWEAKS
=========================== */
@media (max-width: 768px) {
    header {
        padding: 10px 20px;
    }

    .hero h1 {
        font-size: 38px;
    }

    .hero p {
        font-size: 18px;
    }

    section {
        padding: 40px 20px;
    }

    .challenges {
        padding: 20px;
    }

    .challenges ul {
        padding-left: 20px;
    }
}

@media (max-width: 480px) {
    .navbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .navbar ul {
        flex-direction: column;
        width: 100%;
    }

    .navbar li {
        margin-left: 0;
        margin-bottom: 8px;
    }

    .hero h1 {
        font-size: 28px;
    }

    .hero p {
        font-size: 16px;
    }

    .challenges ul {
        padding-left: 15px;
    }
}

@media (max-width: 768px) {
    .challenges {
        padding: 20px;
    }

     .challenges h2 {
        font-size: 20px;
    }

    .challenges ul li {
        padding: 10px 12px;
    }
}
@media (max-width: 480px) {
    .challenges h2 {
        font-size: 18px;
    }

    .challenges ul li {
        padding: 8px 10px;
        font-size: 14px;
    }
}