:root {
    /* Dark Theme (Default) */
    --background-color: #1a1a1a;
    --card-background: #2a2a2a;
    --text-color: #e0e0e0;
    --primary-color: #8ab4f8; /* Google Blue-ish */
    --secondary-color: #bdc1c6; /* Light grey for labels */
    --border-color: #3a3a3a;
    --shadow-color: rgba(0, 0, 0, 0.5);
    --input-background: #3a3a3a;
    --input-border: #444;
    --button-background: #8ab4f8;
    --button-text: #1a1a1a;
    --button-hover: #a6c7ff;
    --chip-background: #3a3a3a;
    --chip-text: #e0e0e0;
    --chip-close: #ff6b6b;
}

body.light-theme {
    /* Light Theme */
    --background-color: #f0f2f5; /* Light gray background */
    --card-background: #ffffff; /* White card background */
    --text-color: #333333; /* Dark text */
    --primary-color: #1a73e8; /* Google Blue */
    --secondary-color: #5f6368; /* Darker grey for labels */
    --border-color: #cccccc;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --input-background: #f8f8f8;
    --input-border: #dddddd;
    --button-background: #1a73e8;
    --button-text: #ffffff;
    --button-hover: #4285f4;
    --chip-background: #e0e0e0;
    --chip-text: #333333;
    --chip-close: #cc0000;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    box-sizing: border-box;
    transition: background-color 0.3s ease, color 0.3s ease; /* Smooth theme transition */
}

.container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 1200px; /* Wider container */
    width: 100%;
}

h1 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 20px;
    font-size: 2.5em;
}

h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.5em;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.card {
    background-color: var(--card-background);
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 10px 20px var(--shadow-color); /* Larger shadow */
    transition: transform 0.2s ease-in-out, background-color 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-3px);
}

.active-filters-section {
    margin-bottom: 20px;
}

.main-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); /* Responsive grid for cards */
    gap: 20px;
}

.input-group {
    margin-bottom: 18px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: var(--secondary-color);
    font-size: 0.95em;
}

.input-group input[type="text"],
.input-group input[type="number"],
.input-group input[type="date"],
.input-group select {
    width: calc(100% - 20px);
    padding: 12px 10px;
    border: 1px solid var(--input-border);
    border-radius: 8px;
    background-color: var(--input-background);
    color: var(--text-color);
    font-size: 1em;
    transition: border-color 0.2s, box-shadow 0.2s, background-color 0.3s ease, color 0.3s ease;
    -webkit-appearance: none; /* Remove default select arrow */
    -moz-appearance: none;
    appearance: none;
}

.input-group input[type="text"]::placeholder,
.input-group input[type="number"]::placeholder {
    color: var(--secondary-color); /* Placeholder color adapts to theme */
}

.input-group input[type="text"]:focus,
.input-group input[type="number"]:focus,
.input-group input[type="date"]:focus,
.input-group select:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-color); /* Use primary color for focus shadow */
}

.numeric-range-group,
.proximity-group {
    display: flex;
    gap: 10px;
}

.numeric-range-group input,
.proximity-group input {
    flex: 1;
    width: auto; /* Override width for flex items */
}

.filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px; /* Increased gap for chips */
    min-height: 30px;
    padding: 10px 0;
}

.chip {
    background-color: var(--primary-color); /* Primary color for chips */
    color: var(--button-text); /* Dark text on primary background */
    padding: 8px 15px; /* Larger padding */
    border-radius: 25px; /* More rounded */
    display: flex;
    align-items: center;
    font-size: 0.95em;
    white-space: nowrap;
    box-shadow: 0 2px 5px var(--shadow-color);
    transition: background-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
}

.chip .close-btn {
    background: none;
    border: none;
    color: var(--button-text); /* Dark text for close button */
    font-size: 1.2em;
    margin-left: 10px;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    transition: color 0.2s;
}

.chip .close-btn:hover {
    color: #ff4d4d;
}

.query-box {
    background-color: var(--input-background);
    border: 1px solid var(--input-border);
    border-radius: 8px;
    padding: 15px;
    min-height: 80px; /* Taller preview box */
    word-wrap: break-word;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 1.1em;
    color: var(--primary-color);
    margin-top: 15px;
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.actions-section {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}

.actions-section button {
    background-color: var(--button-background);
    color: var(--button-text);
    border: none;
    border-radius: 8px;
    padding: 12px 25px;
    font-size: 1em;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s, color 0.3s ease;
    box-shadow: 0 4px 8px var(--shadow-color);
}

.actions-section button:hover {
    background-color: var(--button-hover);
    transform: translateY(-2px);
}

.actions-section button:active {
    transform: translateY(0);
}

/* Theme Toggle Button */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--card-background);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 45px;
    height: 45px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5em;
    cursor: pointer;
    box-shadow: 0 4px 8px var(--shadow-color);
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    z-index: 1000;
}

.theme-toggle:hover {
    transform: scale(1.05);
}

/* Tooltip Styles */
.tooltip-icon {
    position: relative;
    display: inline-block;
    cursor: help;
    margin-left: 5px;
    color: var(--primary-color); /* Use primary color for the info icon */
    font-size: 0.8em;
    vertical-align: super;
}

.tooltip-icon .tooltip-text {
    visibility: hidden;
    background-color: var(--card-background);
    color: var(--text-color);
    text-align: left;
    border-radius: 8px;
    padding: 10px 15px;
    position: absolute;
    z-index: 1001;
    bottom: 125%; /* Position the tooltip above the text */
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s, transform 0.3s;
    box-shadow: 0 5px 15px var(--shadow-color);
    min-width: 250px;
    max-width: 350px;
    border: 1px solid var(--border-color);
    font-size: 0.9em;
    line-height: 1.4;
}

.tooltip-icon .tooltip-text::after {
    content: "";
    position: absolute;
    top: 100%; /* At the bottom of the tooltip */
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: var(--card-background) transparent transparent transparent;
}

.tooltip-icon:hover .tooltip-text,
.tooltip-icon:focus-within .tooltip-text {
    visibility: visible;
    opacity: 1;
    transform: translateX(-50%) translateY(-5px); /* Slight lift effect */
}

/* Adjust tooltip position for select options */
#specialCommandSelect option[data-tooltip] {
    position: relative;
}

#specialCommandSelect option[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    background-color: var(--card-background);
    color: var(--text-color);
    border-radius: 8px;
    padding: 8px 12px;
    white-space: nowrap;
    z-index: 1002;
    box-shadow: 0 2px 8px var(--shadow-color);
    border: 1px solid var(--border-color);
    font-size: 0.85em;
    margin-left: 10px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .card {
        padding: 15px;
    }

    h1 {
        font-size: 2em;
    }

    h2 {
        font-size: 1.3em;
    }

    .actions-section button {
        width: 100%;
    }

    .theme-toggle {
        top: 10px;
        right: 10px;
        width: 40px;
        height: 40px;
        font-size: 1.3em;
    }
}