/* =========================================================
   Selection Pro - About Us Page
   ========================================================= */

:root {
    --primary: #0d6efd;
    --primary-dark: #0b5ed7;
    --text: #202124;
    --muted: #5f6368;
    --bg: #f5f7fb;
    --white: #ffffff;
    --border: #e8edf3;
    --soft-blue: #eef5ff;
}

/* ---------- Base ---------- */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    padding-top: 130px;
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "Poppins", sans-serif;
    line-height: 1.75;
}

/* ---------- Back Button ---------- */

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--primary);
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    border-radius: 50px;
    box-shadow: 0 7px 18px rgba(13, 110, 253, 0.18);
    transition: all 0.3s ease;
}

.back-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* ---------- Header ---------- */

header {
    max-width: 1000px;
    margin: 35px auto 25px;
    padding: 0 20px;
}

header h1 {
    margin: 30px 0 0;
    font-size: 38px;
    line-height: 1.3;
    font-weight: 700;
    color: var(--text);
}

/* ---------- Main Content ---------- */

main {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px 60px;
}

main section {
    background: var(--white);
    margin-bottom: 24px;
    padding: 30px;
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: 0 6px 20px rgba(32, 33, 36, 0.05);
}

/* ---------- Headings ---------- */

main h2 {
    position: relative;
    margin: 0 0 20px;
    padding-bottom: 12px;
    color: var(--primary);
    font-size: 25px;
    line-height: 1.4;
    font-weight: 700;
}

main h2::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 55px;
    height: 3px;
    background: var(--primary);
    border-radius: 10px;
}

main h3 {
    margin: 0 0 8px;
    color: var(--text);
    font-size: 19px;
    line-height: 1.5;
    font-weight: 600;
}

/* ---------- Paragraphs ---------- */

main p {
    margin: 0 0 16px;
    color: var(--muted);
    font-size: 15px;
}

main p:last-child {
    margin-bottom: 0;
}

main strong {
    color: var(--text);
}

/* ---------- Feature Articles ---------- */

main section:nth-of-type(3) article {
    margin-top: 16px;
    padding: 20px;
    background: #fafcff;
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
    border-radius: 12px;
    transition: all 0.25s ease;
}

main section:nth-of-type(3) article:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(13, 110, 253, 0.08);
}

main section:nth-of-type(3) article p {
    margin-bottom: 0;
}

/* ---------- Links ---------- */

main a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
}

main a:hover {
    color: var(--primary-dark);
}

/* ---------- Footer ---------- */

footer {
    background: var(--white);
    border-top: 1px solid var(--border);
    padding: 25px 20px;
    text-align: center;
}

footer p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}

/* ---------- Tablet ---------- */

@media (max-width: 768px) {

    header {
        margin-top: 25px;
    }

    header h1 {
        margin-top: 25px;
        font-size: 30px;
    }

    main {
        padding: 0 15px 45px;
    }

    main section {
        padding: 24px 20px;
        border-radius: 15px;
    }

    main h2 {
        font-size: 22px;
    }

    main h3 {
        font-size: 18px;
    }

    main p {
        font-size: 14.5px;
    }
}

/* ---------- Mobile ---------- */

@media (max-width: 480px) {

    header {
        padding: 0 15px;
        margin-top: 20px;
    }

    .back-btn {
        padding: 9px 17px;
        font-size: 13px;
    }

    header h1 {
        margin-top: 22px;
        font-size: 27px;
    }

    main {
        padding: 0 12px 35px;
    }

    main section {
        padding: 21px 17px;
        margin-bottom: 18px;
        border-radius: 14px;
    }

    main h2 {
        font-size: 20px;
        margin-bottom: 17px;
    }

    main h2::after {
        width: 45px;
        height: 3px;
    }

    main h3 {
        font-size: 17px;
    }

    main p {
        font-size: 14px;
        line-height: 1.75;
    }

    main section:nth-of-type(3) article {
        padding: 17px;
    }

    footer {
        padding: 20px 15px;
    }
}