:root {
    --bg-color: #121212;
    --primary-color: #f0f4f9;
    --secondary-color: #b0b8c4;
    --card-bg-color: #1e1e1e;
    --border-color: #333;
    --purple-color: #8A2BE2;
    --purple-hover-color: #7b24ca;
    --blue-color: #007bff;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-color);
    color: var(--primary-color);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    padding: 50px 20px;
}

.container { width: 100%; max-width: 700px; }

header { text-align: center; margin-bottom: 40px; }
header h1 { font-size: 2.5rem; font-weight: 700; margin-bottom: 10px; }
header p { font-size: 1.1rem; color: var(--secondary-color); }

.prompt-box {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
}

.form-section { margin-bottom: 25px; }

.form-section label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
    color: var(--primary-color);
}

#prompt-form input[type="text"] {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: #2a2a2a;
    color: var(--primary-color);
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
}

#prompt-form input[type="text"]:focus {
    outline: none;
    border-color: var(--purple-color);
    box-shadow: 0 0 0 3px rgba(138, 43, 226, 0.2);
}

/* Button Group Styling */
.button-group {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}
.button-group p { margin-right: 5px; color: var(--secondary-color); }
.button-group input[type="radio"] { display: none; }
.button-group label {
    cursor: pointer;
    padding: 8px 15px;
    border-radius: 20px;
    background-color: #333;
    color: var(--primary-color);
    transition: all 0.3s ease;
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* Aspect Ratio Button Color */
.button-group input[type="radio"]:checked + label {
    background-color: var(--purple-color);
    color: white;
    font-weight: 600;
}

/* Visual Style Button Color */
.button-group.style-buttons input[type="radio"]:checked + label {
    background-color: var(--blue-color);
    color: white;
}

.buttons { display: flex; gap: 15px; flex-wrap: wrap; margin-top: 30px;}
.buttons button {
    flex-grow: 1; padding: 12px 20px; border-radius: 8px; border: none;
    font-size: 1rem; font-weight: 600; cursor: pointer;
    transition: background-color 0.3s ease;
}
#generate-btn { background-color: var(--purple-color); color: white; }
#generate-btn:hover { background-color: var(--purple-hover-color); }
#random-btn { background-color: var(--card-bg-color); color: var(--primary-color); border: 1px solid var(--border-color); }
#random-btn:hover { background-color: #2a2a2a; }

#results-container { margin-top: 40px; }
.prompt-result { background-color: var(--card-bg-color); border: 1px solid var(--border-color); border-radius: 8px; padding: 20px; margin-bottom: 15px; line-height: 1.6; }
#loader { width: 50px; height: 50px; border: 5px solid var(--border-color); border-top-color: var(--purple-color); border-radius: 50%; animation: spin 1s linear infinite; margin: 30px auto; }
.hidden { display: none; }
@keyframes spin { to { transform: rotate(360deg); } }