/* style.css */

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

body {
    min-height: 100vh;

    font-family: "Inter", "Segoe UI", Arial, sans-serif;

    background: #0f1117;
    color: #e6e6e6;

    line-height: 1.6;
}


/* Header */

header {
    padding: 70px 20px 40px;
    text-align: center;
}

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

header h1 {
    font-size: 3rem;

    margin-bottom: 15px;

    color: #ffffff;

    letter-spacing: -1px;
}

header p {
    color: #b5b5b5;

    font-size: 1.1rem;

    margin: 10px 0;
}


/* Back button */

.back-button {
    display: inline-block;

    background: #171a22;
    border: 1px solid #272c38;

    color: #e6e6e6;
    text-decoration: none;

    padding: 10px 18px;
    border-radius: 10px;

    font-weight: 600;

    transition:
        background 0.2s ease,
        transform 0.2s ease,
        border-color 0.2s ease;
}


.back-button:hover {
    background: #222735;
    border-color: #3d7cff;
    transform: translateY(-2px);
}


/* Installation layout */

.installation-options {
    display: grid;

    grid-template-columns: repeat(2, minmax(280px, 1fr));

    gap: 25px;

    max-width: 1100px;

    margin: 20px auto 40px;

    padding: 0 20px;
}


.installation-option {
    background: #171a22;

    border: 1px solid #272c38;

    border-radius: 18px;

    padding: 30px;

    height: 100%;

    transition:
        transform 0.25s ease,
        border-color 0.25s ease,
        box-shadow 0.25s ease;
}


.installation-option:hover {
    transform: translateY(-6px);

    border-color: #3d7cff;

    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.35);
}


.installation-option h2 {
    font-size: 1.6rem;

    color: white;

    margin-bottom: 12px;
}


.installation-option p {
    color: #a9adb8;

    margin-bottom: 25px;
}


.installation-option ol {
    padding-left: 22px;

    color: #a9adb8;
}


.installation-option li {
    margin-bottom: 12px;
}


.installation-option strong {
    color: #ffffff;
}


/* Footer */

footer {
    text-align: center;

    color: #8b8f99;

    padding: 30px 20px;
}


footer hr {
    border: none;

    height: 1px;

    background: #292d38;

    max-width: 1100px;

    margin: 20px auto;
}


/* Page animation */

.page-load {
    animation: fadeIn 0.6s ease-out;
}


@keyframes fadeIn {
    from {
        opacity: 0;

        transform: translateY(15px);
    }

    to {
        opacity: 1;

        transform: translateY(0);
    }
}


/* Mobile */

@media (max-width: 700px) {

    header h1 {
        font-size: 2.2rem;
    }


    .installation-options {
        grid-template-columns: 1fr;
    }


    .installation-option {
        padding: 25px;
    }


    .back-button {
        width: 100%;

        text-align: center;
    }
}

/* =========================
   Animated Links
========================= */


.video-button {

    color: #6ea8fe;

    text-decoration: none;

    position: relative;

    display: inline-block;

    transition:
        color 0.2s ease;

}


.video-button::after {

    content: "";

    position: absolute;

    left: 50%;

    bottom: -3px;

    width: 0;

    height: 2px;

    background:

        linear-gradient(
            90deg,
            #3d7cff,
            #60a5fa
        );

    border-radius: 10px;

    transform:

        translateX(-50%);

    transition:

        width 0.3s ease;

}


.video-button:hover {

    color: #9cc5ff;

}


.video-button:hover::after {

    width: 100%;

}