/* ================================
   GLOBAL VARIABLES
================================ */
:root {
    --brand-dark-green: #024b06;
    --brand-light-green: #1f9d5a;
    --bg-light: #f7fdf7;
    --bg-light-alt: #eef6ee;
    --text-dark: #222;
    --text-light: #fff;
    --card-bg: #ffffff;
}

/* ================================
   GLOBAL STYLES
================================ */
body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: #fff;
}

h1,
h2,
h3,
h4 {
    margin-top: 0;
}

/* ================================
   HEADER
================================ */
.site-header {
    position: relative;
    width: 100%;
    z-index: 10;
    background: #f0efef;
    padding: 15px 0;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.pbmit-header-overlay {
    background: rgba(0, 0, 0, 0.5);
    /* optional: dark overlay behind nav */
}

.pbmit-header-content {
    position: relative;
    z-index: 3;
}

/* ================================
   FULLSCREEN HERO VIDEO
================================ */
.hero-section {
    position: relative;
    width: 100%;
    height: 100vh;
    /* full screen */
    overflow: hidden;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
    filter: brightness(100%);
    margin-top: 0;
    /* remove unnecessary margin */
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 2;
}

.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    text-align: center;
    max-width: 800px;
    padding: 20px;
    z-index: 3;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: bold;
    color: white;
    margin-bottom: 15px;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 25px;
}

.btn-hero {
    background-color: rgb(2, 73, 2);
    color: #fff;
    padding: 14px 32px;
    font-size: 1.1rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: 0.3s ease;
}

.btn-hero:hover {
    background-color: var(--brand-dark-green);
}

/* ================================
   ABOUT SECTION
================================ */
.section-about {
    padding: 60px 20px;
    max-width: 1000px;
    margin: 0 auto;
}

.section-about h2 {
    color:white;
    text-align: center;
    margin-bottom: 15px;
}

.section-about p {
    font-size: 1.1rem;
    text-align: center;
}

/* ================================
   PROGRAM TOPIC SECTIONS
================================ */
.topic-block {
    padding: 60px 40px;
    margin-bottom: 40px;
    background: var(--bg-light);
    border-left: 8px solid white;
}

.topic-block:nth-child(even) {
    background: var(--bg-light-alt);
}

.topic-block h2 {
    text-align: center;
    color: var(--brand-dark-green);
    margin-bottom: 10px;
    font-size: 2rem;
}

.topic-desc {
    max-width: 750px;
    margin: 0 auto 35px;
    text-align: center;
    font-size: 1.1rem;
    color: #333;
}

/* ================================
   PROGRAM CARDS GRID
================================ */
.program-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 25px;
    max-width: 1200px;
    margin: 0 auto;
}

.program-card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.12);
    text-align: center;
    transition: 0.3s ease;
}

.program-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 12px rgba(0, 0, 0, 0.18);
}

.program-card img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 15px;
}

.program-card h4 {
    font-size: 1.2rem;
    color: var(--brand-dark-green);
    margin-bottom: 8px;
}

/* ================================
   FOOTER
================================ */
footer {
    background-color: #f2f2f2;
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    font-size: 0.95rem;
}

/* ================================
   RESPONSIVE STYLES
================================ */
@media (max-width: 768px) {
    header {
        height: 65vh;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

    .btn-hero {
        padding: 12px 26px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    header {
        height: 55vh;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

    .hero-content p {
        font-size: 1rem;
    }
}