:root {
    --primary-color: #f4b400;
    --primary-color-light: #ffcf4d;
    --primary-color-dark: #e2a800;
    --secondary-color: #333;
    --accent-color: #f9f3e0;
    --text-color: #444;
    --light-color: #fff;
    --border-radius: clamp(6px, 1vw, 12px);
    --box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    
    /* Fluid spacing */
    --space-xs: clamp(0.5rem, 1vw, 0.75rem);
    --space-sm: clamp(0.75rem, 1.5vw, 1rem);
    --space-md: clamp(1rem, 2vw, 1.5rem);
    --space-lg: clamp(1.5rem, 3vw, 2.5rem);
    --space-xl: clamp(2rem, 5vw, 4rem);
    
    /* Fluid font sizes */
    --font-xs: clamp(0.625rem, 0.8vw + 0.4rem, 0.875rem);
    --font-sm: clamp(0.75rem, 0.9vw + 0.5rem, 1rem);
    --font-base: clamp(0.875rem, 1vw + 0.5rem, 1.125rem);
    --font-md: clamp(1rem, 1.2vw + 0.6rem, 1.25rem);
    --font-lg: clamp(1.125rem, 1.5vw + 0.7rem, 1.5rem);
}

* {
    box-sizing: border-box;
    font-family: 'Times New Roman', Times, serif;
}

body {
    font-family: 'Times New Roman', Times, serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
    color: var(--text-color);
    font-size: var(--font-base);
}

/* Fluid container with automatic margins */
.filter-container {
    width: min(95%, 1200px);
    margin-block: clamp(120px, 15vw, 200px) var(--space-lg);
    margin-inline: auto;
    padding: clamp(12px, 3vw, 30px) clamp(10px, 2vw, 20px);
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.page-content {
    padding-block-start: clamp(20px, 5vw, 40px);
}

/* Flexible tabs with automatic wrapping */
.filter-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-block-end: var(--space-md);
    border-block-end: 2px solid #eee;
}

.filter-tab {
    padding: clamp(8px, 1.5vw, 12px) clamp(12px, 3vw, 25px);
    cursor: pointer;
    font-weight: 600;
    background: none;
    border: none;
    border-block-end: 3px solid transparent;
    transition: all 0.3s ease;
    color: var(--text-color);
    font-size: var(--font-sm);
    flex: 1 1 auto;
    min-width: max-content;
}

.filter-tab.active {
    color: var(--primary-color);
    border-block-end: 3px solid var(--primary-color);
}

.filter-tab:hover:not(.active) {
    border-block-end: 3px solid var(--primary-color-light);
}

.filter-content {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.filter-content.active {
    display: block;
}

/* Fluid property type tabs */
.property-type-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: clamp(6px, 1.5vw, 15px);
    margin-block-end: var(--space-md);
}

.property-type-tab {
    padding: clamp(6px, 1.2vw, 10px) clamp(12px, 2.5vw, 20px);
    background-color: #f0f0f0;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    font-weight: 500;
    font-size: var(--font-sm);
    flex: 1 1 auto;
    min-width: max-content;
    text-align: center;
}

.property-type-tab.active {
    background-color: var(--primary-color);
    color: white;
}

.property-type-tab:hover:not(.active) {
    background-color: var(--accent-color);
    border-color: var(--primary-color-light);
}

.filter-form {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.filter-form.active {
    display: block;
}

/* Form elements with fluid sizing */
.form-group {
    margin-block-end: var(--space-md);
}

.form-label {
    display: block;
    margin-block-end: var(--space-xs);
    font-weight: 500;
    color: var(--secondary-color);
    font-size: var(--font-sm);
}

.form-control {
    width: 100%;
    padding: clamp(8px, 1.5vw, 12px) clamp(10px, 2vw, 15px);
    border: 2px solid #ddd;
    border-radius: var(--border-radius);
    font-size: var(--font-sm);
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(244, 180, 0, 0.1);
}

/* Auto-responsive checkbox grid */
.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 150px), 1fr));
    gap: clamp(6px, 1.5vw, 12px);
    margin-block-start: var(--space-sm);
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: clamp(3px, 0.5vw, 6px);
}

.checkbox-item input[type="checkbox"] {
    accent-color: var(--primary-color);
    width: clamp(13px, 1.5vw, 16px);
    height: clamp(13px, 1.5vw, 16px);
    cursor: pointer;
}

.checkbox-item label {
    font-size: var(--font-xs);
    cursor: pointer;
    user-select: none;
}

/* Fluid location filter grid */
.location-filter {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
    gap: clamp(6px, 1.5vw, 10px);
}

/* Button container with flexible layout */
.button-container {
    display: flex;
    flex-wrap: wrap;
    gap: clamp(8px, 2vw, 20px);
    justify-content: center;
    margin-block-start: var(--space-lg);
}

.btn {
    padding: clamp(8px, 1.5vw, 12px) clamp(15px, 3vw, 25px);
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-size: var(--font-sm);
    min-width: clamp(120px, 20vw, 150px);
    text-align: center;
    flex: 1 1 auto;
    max-width: 300px;
}

.search-btn {
    background-color: var(--primary-color);
    color: white;
}

.search-btn:hover:not(:disabled) {
    background-color: var(--primary-color-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(244, 180, 0, 0.3);
}

.check-work-btn {
    background-color: var(--secondary-color);
    color: white;
}

.check-work-btn:hover:not(:disabled) {
    background-color: #555;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(51, 51, 51, 0.3);
}

.btn:disabled {
    background-color: #ccc;
    color: #888;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Responsive toast notification */
.toast {
    position: fixed;
    inset-block-start: clamp(10px, 2vw, 20px);
    inset-inline-end: clamp(5px, 2vw, 20px);
    background-color: #ff4444;
    color: white;
    padding: clamp(8px, 1.5vw, 15px) clamp(12px, 2vw, 20px);
    border-radius: clamp(6px, 1vw, 8px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.3s ease;
    font-size: var(--font-xs);
    max-width: min(90vw, 300px);
}

.toast.show {
    opacity: 1;
    transform: translateX(0);
}

.toast.success {
    background-color: #4CAF50;
}

/* Range slider with fluid styling */
.range-slider {
    width: 100%;
    margin-block-start: var(--space-sm);
}

.range-values {
    display: flex;
    justify-content: space-between;
    margin-block-start: var(--space-sm);
    font-size: var(--font-sm);
    color: var(--secondary-color);
}

/* Terms checkbox */
.terms-checkbox {
    margin-block-end: var(--space-md);
}

.terms-checkbox label {
    color: #555;
    font-size: var(--font-sm);
}

.terms-link {
    color: var(--primary-color);
    text-decoration: underline;
}

.terms-link:hover {
    color: var(--primary-color-dark);
}

/* Animations */
@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: translateY(10px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

/* Container queries support (progressive enhancement) */
@supports (container-type: inline-size) {
    .filter-container {
        container-type: inline-size;
        container-name: filter;
    }
    
    @container filter (max-width: 600px) {
        .filter-tabs {
            flex-direction: column;
        }
        
        .property-type-tabs {
            flex-direction: column;
        }
    }
}

/* Print styles */
@media print {
    .filter-container {
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    .btn {
        display: none;
    }
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .filter-tab.active {
        border-block-end-width: 4px;
    }
    
    .form-control:focus {
        outline: 3px solid var(--primary-color);
    }
}

/* Dark mode support (optional) */
@media (prefers-color-scheme: dark) {
    :root {
        --text-color: #e0e0e0;
        --secondary-color: #f5f5f5;
        --light-color: #1e1e1e;
        --accent-color: #2a2a2a;
    }
    
    body {
        background-color: #121212;
    }
    
    .property-type-tab {
        background-color: #2a2a2a;
    }
    
    .form-control {
        background-color: #2a2a2a;
        color: #e0e0e0;
        border-color: #444;
    }
}