:root {
    --bg-body: #f4f7f6;
    --bg-container: white;
    --text-main: #333;
    --text-muted: #666;
    --input-border: #ccc;
    --input-bg: white;
    --btn-bg: #212529; 
    --btn-hover: #495057;
}

.dark-mode {
    --bg-body: #181818;
    --bg-container: #242424;
    --text-main: #f1f1f1;
    --text-muted: #aaaaaa;
    --input-border: #444;
    --input-bg: #333;
    --btn-bg: #E3000F; 
    --btn-hover: #B3000C;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    transition: background-color 0.3s, color 0.3s;
}

.theme-toggle {
    position: fixed;
    top: 25px;
    right: 25px;
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    outline: none;
    transition: transform 0.3s, color 0.3s;
    padding: 10px;
}

.theme-toggle:hover {
    transform: scale(1.1);
}

.container {
    background-color: var(--bg-container);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    text-align: center;
    max-width: 400px;
    width: 100%;
    transition: background-color 0.3s;
}

h1 {
    font-size: 24px;
    margin-bottom: 20px;
}

.subtitulo {
    color: var(--text-muted);
    margin-bottom: 20px;
    font-size: 14px;
}

input {
    width: 100%;
    padding: 12px;
    margin-bottom: 20px;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    box-sizing: border-box;
    font-size: 16px;
    outline: none;
    background-color: var(--input-bg);
    color: var(--text-main);
    transition: 0.3s;
}

input:focus {
    border-color: #007BFF;
}

.btn-verificar {
    background-color: var(--btn-bg);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    width: 100%;
    transition: background-color 0.3s;
    font-weight: bold;
}

.btn-verificar:hover {
    background-color: var(--btn-hover);
}

#result {
    margin-top: 25px;
    font-size: 18px;
    font-weight: bold;
    min-height: 50px;
    line-height: 1.5;
}

.destaque {
    color: #007BFF;
    font-size: 22px;
}

.detalhes {
    font-size: 14px;
    font-weight: normal;
    color: var(--text-muted);
    margin-top: 15px;
    display: block;
}

.btn-suzuki {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 15px;
    padding: 10px 20px;
    background-color: #00429A;
    color: white !important;
    text-decoration: none;
    border-radius: 6px;
    font-weight: bold;
    font-size: 14px;
    transition: background-color 0.3s;
}

.btn-suzuki:hover {
    background-color: #003070;
}

.btn-suzuki img {
    height: 14px; 
    filter: url(#suzukifilter); 
}