body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #f5f5f5;
    color: #111;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

/* ===== CONTAINER ===== */

.container {
    max-width: 1100px;
    margin: auto;
    padding: 0 20px;
}

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

.header {
    background: #ffffff;
    border-bottom: 1px solid #eee;
    padding: 18px 0;
    position: relative;
    z-index: 10;
}

.header::after {
    content: "";
    display: block;
    height: 2px;
    background: #EB692F;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 20px;
    width: auto;
    display: block;
}

/* ===== NAV ===== */

nav a {
    margin-left: 28px;
    text-decoration: none;
    color: #333;
    font-size: 14px;
    letter-spacing: 0.5px;
    transition: 0.25s ease;
}

nav a:hover {
    color: #EB692F;
}

nav a.active {
    color: #EB692F;
    font-weight: 600;
}

nav a.cta {
    border: 1px solid #EB692F;
    padding: 6px 14px;
    border-radius: 2px;
    color: #EB692F;
}

nav a.cta:hover {
    background: #EB692F;
    color: #fff;
}

/* ===== HERO IMAGE ===== */

.hero-image {
    background: url('/img/stg.png') center center / cover no-repeat;
    height: 520px;
    position: relative;
    display: flex;
    align-items: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.55); /* mocniejszy overlay */
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
    margin-left: 10%;
    background: rgba(0, 0, 0, 0.55); /* box pod tekstem */
    padding: 40px;
    border-radius: 4px;
    backdrop-filter: blur(4px);
    color: #fff;
}

.hero-content h1 {
    font-size: 34px;
    font-weight: 500;
    margin-bottom: 15px;
}

.hero-content p {
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 10px;
}

/* ===== SECTIONS ===== */

section {
    padding: 70px 0;
}

section h1 {
    font-size: 32px;
    font-weight: 500;
    margin-bottom: 20px;
}

section h2 {
    font-size: 22px;
    font-weight: 500;
    margin-bottom: 15px;
    border-left: 4px solid #EB692F;
    padding-left: 14px;
}

section h3 {
    font-size: 17px;
    margin-top: 25px;
    margin-bottom: 10px;
}

section p {
    color: #555;
    max-width: 750px;
}

ul {
    padding-left: 20px;
    color: #444;
}

/* ===== BUTTON ===== */

.btn {
    display: inline-block;
    margin-top: 25px;
    padding: 12px 34px;
    border: 1px solid #EB692F;
    color: #EB692F;
    text-decoration: none;
    font-size: 14px;
    letter-spacing: 1px;
    transition: 0.25s ease;
}

.btn:hover {
    background: #EB692F;
    color: #fff;
}

/* ===== IMAGES ===== */

img {
    max-width: 100%;
    height: auto;
    border-radius: 2px;
}

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

.footer {
    background: #111;
    color: #bbb;
    text-align: center;
    padding: 40px 20px;
    font-size: 13px;
}

.footer a {
    color: #EB692F;
    text-decoration: none;
}

.footer a:hover {
    color: #fff;
}

/* ===== MOBILE ===== */

@media (max-width: 768px) {

    .header-inner {
        flex-direction: column;
        align-items: flex-start;
    }

    nav {
        margin-top: 15px;
    }

    nav a {
        margin-left: 0;
        margin-right: 18px;
        font-size: 13px;
    }

    .hero-image {
        height: 420px;
    }

    .hero-content {
        margin-left: 5%;
        padding: 25px;
        max-width: 90%;
    }

    .hero-content h1 {
        font-size: 24px;
    }

    section {
        padding: 50px 0;
    }

    .btn {
        padding: 10px 24px;
        font-size: 13px;
    }
}