/* =========================
   GLOBAL RESET
========================= */

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

body {
    font-family: Arial, Helvetica, sans-serif;
    color: #ffffff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background:
        url('images/osgbrand-background.png') no-repeat center center fixed,
        linear-gradient(135deg, #0b1f3a, #122f55);
    background-size: cover;
}

main { flex: 1; }

/* =========================
   HEADER
========================= */

header {
    background: rgba(0, 0, 0, 0.65);
    padding: 15px 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img { height: 45px; }

nav a {
    color: #ffffff;
    text-decoration: none;
    margin-left: 30px;
    font-size: 17px;
    transition: 0.3s ease;
}

nav a:hover { color: #4da3ff; }

/* =========================
   HERO SECTION
========================= */

.hero { text-align: center; padding: 140px 20px 100px 20px; }
.hero h1 { font-size: 44px; margin-bottom: 25px; }
.hero p { font-size: 20px; max-width: 800px; margin: 0 auto 40px auto; line-height: 1.6; }

/* =========================
   BUTTONS
========================= */

.btn-primary {
    background: #4da3ff;
    padding: 14px 35px;
    color: #ffffff;
    text-decoration: none;
    border-radius: 6px;
    font-size: 16px;
    display: inline-block;
    transition: 0.3s ease;
}
.btn-primary:hover { background: #2f82d6; }

.btn-success { background: #28a745; }
.btn-success:hover { background: #1e7e34; }

/* =========================
   CARD SECTION
========================= */

.card-container {
    display: flex;
    justify-content: center;
    gap: 40px;
    padding: 0 40px 100px 40px;
    flex-wrap: wrap;
}

.card {
    background: rgba(0, 0, 0, 0.97);
    padding: 40px;
    border-radius: 12px;
    max-width: 320px;
    text-align: center;
}

.card h3 { margin-bottom: 20px; }

/* =========================
   CONTENT PAGES
========================= */

.content-page {
    max-width: 1350px;
    margin: 140px auto 100px auto;
    padding: 60px;
    background: rgba(0, 0, 0, 0.97);
    border-radius: 16px;
    line-height: 1.8;
    font-size: 16px;
}

.content-page h1 { margin-bottom: 30px; }
.content-page h2 { margin-top: 40px; margin-bottom: 15px; }
.content-page h3 { margin-top: 30px; margin-bottom: 15px; }
.content-page p { margin-bottom: 25px; }
.content-page ul { margin-left: 30px; margin-bottom: 25px; }
.content-page li { margin-bottom: 10px; }
.content-page hr { border: none; height: 1px; background: rgba(255,255,255,0.2); }

/* =========================
   FORMS
========================= */

.form-container {
    max-width: 500px;
    margin: 160px auto;
    background: rgba(0, 0, 0, 0.97);
    padding: 50px;
    border-radius: 12px;
    text-align: center;
}

.form-logo img { height: 60px; margin-bottom: 25px; }

form input {
    width: 100%;
    padding: 14px;
    margin-bottom: 18px;
    border-radius: 6px;
    border: none;
    font-size: 15px;
}
form input:focus { outline: none; box-shadow: 0 0 0 2px #4da3ff; }

form button {
    width: 100%;
    padding: 14px;
    border: none;
    color: #ffffff;
    font-size: 16px;
    border-radius: 6px;
    cursor: pointer;
    transition: 0.3s ease;
}

form button:hover { opacity: 0.9; }

/* =========================
   FOOTER
========================= */

footer {
    background: rgba(0, 0, 0, 0.9);
    text-align: center;
    padding: 20px;
    font-size: 14px;
}

/* =========================
   ABOUT PAGE IMAGES
========================= */

.about-image {
    width: 50%;
    filter: contrast(1) saturate(0.85) brightness(0.95);
    display: block;
    margin: 0 auto 20px auto;
    border-radius: 8px;
}