:root {
    --background-color: #f0f2f5;
    --container-background: #ffffff;
    --text-color: #1c1e21;
    --button-background: #1877f2;
    --button-text-color: #ffffff;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --history-item-background: #f0f2f5;
    --input-background: #f0f2f5;
    --input-border: #ccd0d5;
}

body.dark-mode {
    --background-color: #18191a;
    --container-background: #242526;
    --text-color: #e4e6eb;
    --button-background: #2d88ff;
    --button-text-color: #ffffff;
    --box-shadow: 0 4px 12px rgba(255, 255, 255, 0.1);
    --history-item-background: #3a3b3c;
    --input-background: #3a3b3c;
    --input-border: #606770;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    padding: 1rem;
    box-sizing: border-box;
}

.container {
    text-align: center;
    background-color: var(--container-background);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--box-shadow);
    position: relative;
    width: 100%;
    max-width: 500px;
    box-sizing: border-box;
}

.theme-switch-wrapper {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
}

.theme-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
}

.theme-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    -webkit-transition: .4s;
    transition: .4s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    -webkit-transition: .4s;
    transition: .4s;
}

input:checked + .slider {
    background-color: #2196F3;
}

input:focus + .slider {
    box-shadow: 0 0 1px #2196F3;
}

input:checked + .slider:before {
    -webkit-transform: translateX(22px);
    -ms-transform: translateX(22px);
    transform: translateX(22px);
}

.slider.round {
    border-radius: 28px;
}

.slider.round:before {
    border-radius: 50%;
}


.lotto-numbers {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 2rem;
}

.lotto-number {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.2rem;
    font-weight: bold;
    animation: pop-in 0.5s ease-out forwards;
    transform: scale(0);
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

@keyframes pop-in {
    0% {
        transform: scale(0);
    }
    60% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

#generate-btn {
    padding: 1rem 2rem;
    font-size: 1.2rem;
    cursor: pointer;
    background-color: var(--button-background);
    border: none;
    color: var(--button-text-color);
    border-radius: 10px;
    transition: transform 0.2s, background-color 0.2s;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-weight: 600;
}

#generate-btn:hover {
    transform: scale(1.05);
}

.history-list {
    list-style: none;
    padding: 0;
    margin-top: 2rem;
    max-height: 150px;
    overflow-y: auto;
}

.history-list li {
    background-color: var(--history-item-background);
    padding: 0.5rem;
    border-radius: 5px;
    margin-bottom: 0.5rem;
    word-break: break-all;
}
h1, h2{
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-weight: 700;
}

/* Inquiry Form Styles */
.inquiry-form {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--input-border);
    border-radius: 8px;
    background-color: var(--input-background);
    color: var(--text-color);
    box-sizing: border-box; /* Ensures padding doesn't increase total width */
    transition: border-color 0.2s, background-color 0.2s;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group textarea:focus {
    border-color: var(--button-background);
    outline: none;
}

.inquiry-form button[type="submit"] {
    width: 100%;
    padding: 1rem;
    font-size: 1.2rem;
    cursor: pointer;
    background-color: var(--button-background);
    border: none;
    color: var(--button-text-color);
    border-radius: 10px;
    transition: transform 0.2s, background-color 0.2s;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-weight: 600;
}

.inquiry-form button[type="submit"]:hover {
    transform: scale(1.02);
    opacity: 0.9;
}

/* Responsive adjustments */
@media (max-width: 600px) {
    body {
        padding: 0.5rem;
    }

    .container {
        padding: 1.5rem;
    }

    .theme-switch-wrapper {
        top: 1rem;
        right: 1rem;
    }

    h1 {
        font-size: 1.8rem;
    }

    h2 {
        font-size: 1.3rem;
    }

    #generate-btn,
    .inquiry-form button[type="submit"] {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }
}

@media (max-width: 380px) {
    .lotto-number {
        width: 38px;
        height: 38px;
        font-size: 1rem;
    }

    .lotto-numbers {
        gap: 5px;
    }

    #generate-btn,
    .inquiry-form button[type="submit"] {
        padding: 0.7rem 1.2rem;
        font-size: 0.9rem;
    }
}

/* Ad Container Styles */
.ad-container {
    margin: 2rem auto;
    text-align: center;
}

.ad-container p {
    margin-bottom: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-color);
    opacity: 0.7;
}

@media (max-width: 768px) {
    .ad-leaderboard {
        display: none;
    }
}

@media (max-width: 320px) {
    .ad-rectangle {
        display: none;
    }
}