/* Train animation styles */
.train-animation-wrapper {
    width: 100vw;
    max-width: 100%;
    overflow: hidden;
    height: 40px;
    margin: 0 0 12px 0;
    position: relative;
    background: transparent;
}
.train-svg {
    position: absolute;
    left: -260px;
    right: auto;
    top: 4px;
    animation: train-move 10s linear infinite;
    z-index: 1;
    transform: none;
}
@keyframes train-move {
    0% { left: -260px; }
    100% { left: 100vw; }
}

body {
    font-family: Arial, sans-serif;
    background: #f4f6fb;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 400px;
    margin: 60px auto;
    background: #fff;
    padding: 32px 24px;
    border-radius: 12px;
    box-shadow: 0 2px 16px rgba(0,0,0,0.08);
    text-align: center;
}

h1 {
    color: #2d3a4b;
    margin-bottom: 24px;
    font-size: 1.7rem;
}

label {
    display: block;
    margin-bottom: 8px;
    color: #444;
    font-size: 1rem;
}

input[type="date"] {
    padding: 8px;
    width: 100%;
    margin-bottom: 16px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
    box-sizing: border-box;
}

button {
    background: #007bff;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    width: 100%;
    max-width: 220px;
}

button:hover {
    background: #0056b3;
}

#result {
    margin-top: 24px;
    font-size: 18px;
    color: #2d3a4b;
    word-break: break-word;
}


:root {
    --bg: #f4f6fb;
    --container-bg: #fff;
    --text: #2d3a4b;
    --label: #444;
    --input-bg: #fff;
    --input-border: #ccc;
    --button-bg: #007bff;
    --button-hover: #0056b3;
    --button-text: #fff;
    --shadow: 0 2px 16px rgba(0,0,0,0.08);
}

body {
    font-family: Arial, sans-serif;
    background: var(--bg);
    margin: 0;
    padding: 0;
    color: var(--text);
    transition: background 0.2s, color 0.2s;
}

.container {
    max-width: 400px;
    margin: 60px auto;
    background: var(--container-bg);
    padding: 32px 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: background 0.2s;
}

h1 {
    color: var(--text);
    margin-bottom: 24px;
    font-size: 1.7rem;
}

label {
    display: block;
    margin-bottom: 8px;
    color: var(--label);
    font-size: 1rem;
}

input[type="date"] {
    padding: 8px;
    width: 100%;
    max-width: 100%;
    margin-bottom: 16px;
    border: 1px solid var(--input-border);
    border-radius: 4px;
    font-size: 1rem;
    box-sizing: border-box;
    background: var(--input-bg);
    color: var(--text);
    transition: background 0.2s, color 0.2s;
    min-width: 0;
    overflow: hidden;
}

button[type="submit"] {
    background: var(--button-bg);
    color: var(--button-text);
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    width: 100%;
    max-width: 220px;
    transition: background 0.2s;
}

button[type="submit"]:hover {
    background: var(--button-hover);
}

#result {
    margin-top: 24px;
    font-size: 18px;
    color: var(--text);
    word-break: break-word;
}

#themeToggle {
    position: absolute;
    top: 18px;
    right: 18px;
    background: none;
    border: none;
    font-size: 1.6rem;
    cursor: pointer;
    z-index: 10;
    color: var(--text);
    transition: color 0.2s;
}

body.dark {
    --bg: #181c24;
    --container-bg: #232a36;
    --text: #f4f6fb;
    --label: #c0c6d1;
    --input-bg: #232a36;
    --input-border: #444b5a;
    --button-bg: #2d7cff;
    --button-hover: #1a4e99;
    --button-text: #fff;
    --shadow: 0 2px 16px rgba(0,0,0,0.32);
}

@media (max-width: 600px) {
    .container {
        max-width: 98vw;
        margin: 24px 1vw;
        padding: 18px 6px;
        border-radius: 8px;
    }
    h1 {
        font-size: 1.2rem;
    }
    label, input[type="date"], button, #result {
        font-size: 0.98rem;
    }
    input[type="date"] {
        font-size: 1rem;
        width: 100%;
        max-width: 100%;
        min-width: 0;
        box-sizing: border-box;
    }
    button[type="submit"] {
        padding: 10px 0;
        max-width: 100%;
    }
    #themeToggle {
        top: 8px;
        right: 8px;
        font-size: 1.2rem;
    }
}