@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;700;900&display=swap');

:root {
    --background-color: #121212;
    --text-color: #EAEAEA;
    --primary-yellow: #fafa33;
    --card-background: #1E1E1E;
    --footer-text: #888888;
    --border-color: #333;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: 'Inter', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    text-align: center;
    padding: 20px;
}

.container {
    max-width: 650px;
    width: 100%;
}

header h1 {
    font-size: 2.2rem;
    font-weight: 900;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.subtitle {
    font-size: 1rem;
    color: var(--footer-text);
    margin-top: 0;
    margin-bottom: 25px;
}

/* Controls / Toggle Bar */
.controls-bar {
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
}

.toggle-container {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

.toggle-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.slider {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 22px;
    background-color: #333;
    border-radius: 34px;
    margin-right: 12px;
    transition: .3s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: var(--text-color);
    border-radius: 50%;
    transition: .3s;
}

input:checked + .slider {
    background-color: var(--primary-yellow);
}

input:checked + .slider:before {
    transform: translateX(22px);
    background-color: #000;
}

.toggle-label {
    color: var(--text-color);
}

.toggle-label strong {
    color: var(--primary-yellow);
    margin-left: 3px;
}

/* Category Button Grid */
.category-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin: 20px 0;
}

.cat-btn {
    background-color: transparent;
    color: var(--text-color);
    border: 2px solid var(--border-color);
    border-radius: 6px;
    padding: 14px 10px;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.2s ease;
}

.cat-btn:hover {
    border-color: var(--primary-yellow);
    color: var(--primary-yellow);
    transform: translateY(-2px);
}

.cat-btn.active {
    background-color: var(--primary-yellow);
    border-color: var(--primary-yellow);
    color: #000;
}

/* Display Card */
#prompt-display {
    background-color: var(--card-background);
    border-radius: 8px;
    padding: 45px 30px;
    margin: 20px 0;
    min-height: 150px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 1px solid var(--border-color);
    position: relative;
    box-shadow: 0 4px 25px rgba(0,0,0,0.4);
}

#category-tag {
    position: absolute;
    top: 15px;
    font-size: 0.72rem;
    font-weight: 900;
    letter-spacing: 0.15em;
    color: var(--primary-yellow);
    border: 1px solid var(--primary-yellow);
    padding: 2px 8px;
    border-radius: 4px;
}

#prompt-text {
    font-size: 1.3rem;
    font-weight: 400;
    line-height: 1.6;
    margin: 15px 0 0 0;
}

footer {
    margin-top: 50px;
    color: var(--footer-text);
    font-size: 0.85rem;
}