:root {
    --bg-gradient: linear-gradient(45deg, #d299c2 0%, #fef9d7 100%);
    --container-bg: #ffffff;
    --text-primary: #333333;
    --button-bg: #4a90e2;
    --button-bg-hover: #357abd;
    --button-shadow: rgba(74, 144, 226, 0.4);
    --button-shadow-hover: rgba(74, 144, 226, 0.6);
    --toggle-bg: #ffffff;
    --toggle-border: #dddddd;
    --toggle-text: #333333;
    --input-bg: #ffffff;
    --input-border: #d1d5db;
    --input-text: #111827;
}

body[data-theme='dark'] {
    --bg-gradient: linear-gradient(45deg, #1f2430 0%, #0f172a 100%);
    --container-bg: #1e293b;
    --text-primary: #f8fafc;
    --button-bg: #60a5fa;
    --button-bg-hover: #3b82f6;
    --button-shadow: rgba(96, 165, 250, 0.45);
    --button-shadow-hover: rgba(96, 165, 250, 0.7);
    --toggle-bg: #334155;
    --toggle-border: #475569;
    --toggle-text: #f8fafc;
    --input-bg: #0f172a;
    --input-border: #334155;
    --input-text: #e2e8f0;
}

body {
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-image: var(--bg-gradient);
}

.container {
    background-color: var(--container-bg);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    text-align: center;
    width: 90%;
    max-width: 500px;
    position: relative;
}

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

#theme-toggle-btn {
    position: absolute;
    top: 14px;
    right: 14px;
    background: var(--toggle-bg);
    border: 1px solid var(--toggle-border);
    color: var(--toggle-text);
    border-radius: 999px;
    padding: 8px 12px;
    cursor: pointer;
    font-size: 14px;
}

.lotto-balls-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 30px;
    min-height: 60px;
}

.contact-section {
    margin-top: 28px;
    text-align: left;
}

.contact-section h2 {
    color: var(--text-primary);
    font-size: 20px;
    margin: 0 0 14px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.contact-form label {
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    box-sizing: border-box;
    border: 1px solid var(--input-border);
    background: var(--input-bg);
    color: var(--input-text);
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 14px;
}

.contact-form textarea {
    resize: vertical;
}

.contact-submit-btn {
    margin-top: 4px;
    background-color: var(--button-bg);
    color: white;
    border: none;
    padding: 12px 14px;
    border-radius: 8px;
    font-size: 15px;
    cursor: pointer;
    transition: background-color 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 10px var(--button-shadow);
}

.contact-submit-btn:hover {
    background-color: var(--button-bg-hover);
    box-shadow: 0 6px 12px var(--button-shadow-hover);
}

.comments-section {
    margin-top: 30px;
    text-align: left;
}

.comments-section h2 {
    color: var(--text-primary);
    font-size: 20px;
    margin: 0 0 14px;
}

.lotto-ball {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 20px;
    font-weight: bold;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    animation: appear 0.5s ease-in-out;
}

#generate-btn {
    background-color: var(--button-bg);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 18px;
    cursor: pointer;
    transition: background-color 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 10px var(--button-shadow);
}

#generate-btn:hover {
    background-color: var(--button-bg-hover);
    box-shadow: 0 6px 12px var(--button-shadow-hover);
}

@keyframes appear {
    from {
        transform: scale(0);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}