/* Basic styles */
body {
    font-family: sans-serif;
    margin: 0;
    background-color: #f0f2f5;
    color: #333;
    transition: background-color .2s, color .2s;
}

.app {
    max-width: 800px;
    margin: 0 auto;
    padding: 1rem;
}

/* Theme toggle */
.theme-dark {
    background-color: #1a1a1a;
    color: #f0f2f5;
}

.theme-dark .app {
    background-color: #242424;
}

.theme-dark .filter-btn, .theme-dark .action-btn, .theme-dark .saved-btn {
    background-color: #3b3b3b;
    color: #f0f2f5;
    border-color: #555;
}

.theme-dark .filter-btn.active {
    background-color: #3b82f6;
    color: white;
    border-color: #3b82f6;
}

.theme-dark textarea, .theme-dark input[type=text] {
    background-color: #333;
    color: #f0f2f5;
    border-color: #555;
}


/* Header */
.header {
    text-align: center;
    margin-bottom: 2rem;
    border-bottom: 1px solid #ddd;
    padding-bottom: 1rem;
}

.header h1 {
    margin-bottom: .5rem;
}

.header .warning {
    color: #d9534f;
    font-weight: bold;
}


/* Search output */
.search-output {
    margin-bottom: 1.5rem;
}

.search-result {
    display: flex;
    gap: .5rem;
}

#search-output {
    flex-grow: 1;
    padding: .5rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    resize: vertical;
    min-height: 40px;
    transition: height .2s;
}


/* Buttons */
.button-stack {
    display: flex;
    flex-direction: column;
    gap: .5rem;
}


.filter-btn, .action-btn, .saved-btn {
    padding: .5rem 1rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    background-color: #fff;
    cursor: pointer;
    transition: background-color .2s, color .2s, border-color .2s;
    font-size: 1rem;
    text-align: center;
}

.filter-btn.round {
    border-radius: 99px;
}

.filter-btn:hover, .action-btn:hover, .saved-btn:hover {
    background-color: #eee;
}

.filter-btn.active {
    background-color: #3b82f6;
    color: white;
    border-color: #3b82f6;
}

.action-btn {
    background-color: #f0f2f5;
}

#copy-btn.copied {
    background-color: #28a745;
    color: white;
}


/* Filter sections */
.filter-sections {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.filter-section h3 {
    margin-top: 0;
    border-bottom: 1px solid #eee;
    padding-bottom: .5rem;
    margin-bottom: 1rem;
}

.filter-grid {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
}


/* Input groups */
.input-group {
    display: flex;
    align-items: center;
    gap: .5rem;
    margin-bottom: 1rem;
}

.input-group input[type=text] {
    flex-grow: 1;
    padding: .5rem;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.input-group input[type=range] {
    flex-grow: 1;
}

/* Slider color coding */
input[type=range] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 10px;
    border-radius: 5px;
    background: #ddd;
    outline: none;
    opacity: 0.9;
    transition: opacity .2s;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #3b82f6;
    cursor: pointer;
}

input[type=range]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #3b82f6;
    cursor: pointer;
}

.low-value {
    background: linear-gradient(to right, #f44336 0%, #f44336 100%);
}

.mid-value {
    background: linear-gradient(to right, #ffeb3b 0%, #ffeb3b 100%);
}

.high-value {
    background: linear-gradient(to right, #4caf50 0%, #4caf50 100%);
}



/* Operator guide */
.operator-guide {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #ddd;
}

.operator-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.operator-item {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 4px;
    border: 1px solid #eee;
}