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

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #ffffff;
    color: #222;
    line-height: 1.7;
    transition: background .3s, color .3s;
}

.container {
    max-width: 900px;
    margin: 50px auto;
    padding: 0 20px 60px;
}

header {
    margin-bottom: 40px;
}

header h1 {
    font-size: 2rem;
    margin-bottom: 10px;
}

header p {
    color: #555;
    margin-bottom: 6px;
}

/* ---------- Images ---------- */

.hero-image,
.guide-image {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
    margin: 25px auto;
    border-radius: 6px;
    border: 1px solid #ddd;
}

.hero-image {
    margin-bottom: 40px;
}

.guide-image {
    margin-top: 20px;
    margin-bottom: 25px;
}

/* ----------------------------- */

.card {
    margin-bottom: 45px;
    padding-bottom: 35px;
    border-bottom: 1px solid #e5e5e5;
}

.card:last-of-type {
    border-bottom: none;
}

.card h2 {
    font-size: 1.35rem;
    margin-bottom: 15px;
}

.card p {
    margin-bottom: 14px;
    color: #444;
}

.card ol {
    padding-left: 22px;
    margin-bottom: 18px;
}

.card ul {
    margin-top: 8px;
    padding-left: 20px;
}

label {
    display: block;
    margin-top: 18px;
    margin-bottom: 8px;
    font-weight: bold;
}

input {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid #cfcfcf;
    border-radius: 6px;
    font-size: 15px;
    outline: none;
    transition: border-color .2s;
}

input:focus {
    border-color: #555;
}

.button-group {
    margin-top: 20px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

button {
    padding: 10px 18px;
    border: 1px solid #bbb;
    background: #fff;
    border-radius: 6px;
    cursor: pointer;
    font-size: 15px;
    transition: .2s;
}

button:hover {
    background: #f5f5f5;
}

button:active {
    transform: scale(.98);
}

.output,
.path {
    margin-top: 18px;
    background: #f7f7f7;
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 15px;
    white-space: pre-wrap;
    word-break: break-word;
    overflow-x: auto;
    font-family: Consolas, monospace;
    min-height: 60px;
}

.path {
    min-height: auto;
}

footer {
    margin-top: 60px;
    text-align: center;
}

footer h2 {
    margin-bottom: 15px;
}

footer p {
    color: #555;
    margin-top: 8px;
}

a {
    color: #0066cc;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

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

@media (max-width: 768px) {

    .container {
        max-width: 100%;
        padding: 20px;
        margin: 20px auto;
    }

    header h1 {
        font-size: 1.8rem;
    }

    .card h2 {
        font-size: 1.2rem;
    }

    .button-group {
        flex-direction: column;
    }

    button {
        width: 100%;
    }

    .hero-image,
    .guide-image {
        width: 100%;
        margin: 20px auto;
    }

}

@media (max-width: 480px) {

    body {
        font-size: 15px;
    }

    header h1 {
        font-size: 1.6rem;
    }

    .card h2 {
        font-size: 1.1rem;
    }

}

#theme-toggle{
    margin-top:20px;
}

/* =========================
   Dark Mode
========================= */

body.dark{
    background:#121212;
    color:#f1f1f1;
}

body.dark header p,
body.dark .card p,
body.dark footer p{
    color:#cfcfcf;
}

body.dark .card{
    border-bottom:1px solid #333;
}

body.dark input{
    background:#1e1e1e;
    color:white;
    border:1px solid #555;
}

body.dark input::placeholder{
    color:#999;
}

body.dark button{
    background:#202020;
    color:white;
    border:1px solid #555;
}

body.dark button:hover{
    background:#303030;
}

body.dark .output,
body.dark .path{
    background:#1e1e1e;
    color:#f1f1f1;
    border-color:#444;
}

body.dark a{
    color:#6aa8ff;
}

body.dark .hero-image,
body.dark .guide-image{
    border-color:#444;
}