* {
    box-sizing: border-box;
}

:root {
    color-scheme: light;
    --page-bg: #f0f0f0;
    --page-pattern: url("data:image/svg+xml,%3Csvg width='6' height='6' viewBox='0 0 6 6' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%239C92AC' fill-opacity='0.1'%3E%3Cpath d='M5 0h1L0 6V5zM6 5v1H0V5z'/%3E%3C/g%3E%3C/svg%3E");
    --card-bg: #ffffff;
    --text-color: #333333;
    --number-bg: #eeeeee;
    --number-shadow: rgba(0, 0, 0, 0.1);
    --card-shadow: rgba(0, 0, 0, 0.1);
    --button-bg: #007bff;
    --button-hover-bg: #0056b3;
    --button-shadow: rgba(0, 123, 255, 0.5);
    --button-hover-shadow: rgba(0, 123, 255, 0.8);
    --toggle-bg: #f5f7fb;
    --toggle-border: #d4dbe8;
    --toggle-hover-bg: #e9eef8;
    --field-bg: #ffffff;
    --field-border: #d6dce8;
    --field-focus: rgba(0, 123, 255, 0.22);
    --muted-text: #5f6b7a;
}

body.dark-mode {
    color-scheme: dark;
    --page-bg: #10131a;
    --page-pattern: url("data:image/svg+xml,%3Csvg width='6' height='6' viewBox='0 0 6 6' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23D6E2FF' fill-opacity='0.08'%3E%3Cpath d='M5 0h1L0 6V5zM6 5v1H0V5z'/%3E%3C/g%3E%3C/svg%3E");
    --card-bg: #1b2030;
    --text-color: #f4f7fb;
    --number-bg: #2a3142;
    --number-shadow: rgba(0, 0, 0, 0.28);
    --card-shadow: rgba(0, 0, 0, 0.35);
    --button-bg: #4f8cff;
    --button-hover-bg: #2f6fe8;
    --button-shadow: rgba(79, 140, 255, 0.38);
    --button-hover-shadow: rgba(79, 140, 255, 0.65);
    --toggle-bg: #252c3d;
    --toggle-border: #3a4358;
    --toggle-hover-bg: #30384d;
    --field-bg: #22293a;
    --field-border: #3a4358;
    --field-focus: rgba(79, 140, 255, 0.32);
    --muted-text: #c4ccdb;
}

body {
    font-family: sans-serif;
    background-color: var(--page-bg);
    background-image: var(--page-pattern);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    position: relative;
    text-align: center;
    background-color: var(--card-bg);
    width: min(100%, 520px);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 20px var(--card-shadow), 0 6px 6px var(--card-shadow);
    transition: background-color 0.3s, box-shadow 0.3s;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
    padding: 9px 14px;
    border: 1px solid var(--toggle-border);
    border-radius: 999px;
    color: var(--text-color);
    background-color: var(--toggle-bg);
    cursor: pointer;
    font-size: 14px;
    font-weight: 700;
    transition: background-color 0.3s, border-color 0.3s, color 0.3s;
}

.theme-toggle:hover {
    background-color: var(--toggle-hover-bg);
}

.theme-icon {
    width: 18px;
    text-align: center;
}

h1 {
    margin-bottom: 30px;
    color: var(--text-color);
}

.number-container {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
    gap: 10px;
}

.number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--number-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
    color: var(--text-color);
    box-shadow: 0 4px 8px var(--number-shadow);
    transition: background-color 0.3s, color 0.3s, box-shadow 0.3s;
}

#generate-btn {
    padding: 15px 30px;
    font-size: 18px;
    color: white;
    background-color: #007bff;
    background-color: var(--button-bg);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.3s, box-shadow 0.3s;
    box-shadow: 0 0 10px var(--button-shadow);
}

#generate-btn:hover {
    background-color: var(--button-hover-bg);
    box-shadow: 0 0 20px var(--button-hover-shadow);
}

.partner-form {
    display: grid;
    gap: 10px;
    margin-top: 36px;
    padding-top: 32px;
    border-top: 1px solid var(--toggle-border);
    text-align: left;
}

.partner-form h2 {
    margin: 0 0 8px;
    color: var(--text-color);
    font-size: 24px;
    text-align: center;
}

.partner-form label {
    color: var(--muted-text);
    font-size: 14px;
    font-weight: 700;
}

.partner-form input,
.partner-form textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--field-border);
    border-radius: 8px;
    color: var(--text-color);
    background-color: var(--field-bg);
    font: inherit;
    transition: border-color 0.2s, box-shadow 0.2s, background-color 0.3s, color 0.3s;
}

.partner-form textarea {
    resize: vertical;
    min-height: 120px;
}

.partner-form input:focus,
.partner-form textarea:focus {
    border-color: var(--button-bg);
    box-shadow: 0 0 0 4px var(--field-focus);
    outline: none;
}

.partner-form button {
    margin-top: 10px;
    padding: 14px 24px;
    border: none;
    border-radius: 10px;
    color: white;
    background-color: var(--button-bg);
    cursor: pointer;
    font-size: 16px;
    font-weight: 700;
    transition: background-color 0.3s, box-shadow 0.3s;
    box-shadow: 0 0 10px var(--button-shadow);
}

.partner-form button:hover {
    background-color: var(--button-hover-bg);
    box-shadow: 0 0 20px var(--button-hover-shadow);
}

.comments-section {
    margin-top: 36px;
    padding-top: 32px;
    border-top: 1px solid var(--toggle-border);
    text-align: left;
}

.comments-section h2 {
    margin: 0 0 20px;
    color: var(--text-color);
    font-size: 24px;
    text-align: center;
}

#disqus_thread {
    min-height: 220px;
}

@media (max-width: 480px) {
    .container {
        padding: 28px 20px;
    }

    .number-container {
        gap: 8px;
    }

    .number {
        width: 42px;
        height: 42px;
        font-size: 20px;
    }
}