/* ===== CSS Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Luxury Color Palette - Inspired by The St. Regis & Four Seasons */

    /* Primary Gold - Rich, Sophisticated */
    --primary-color: #C5A572;
    --primary-dark: #A68952;
    --primary-light: #E8D5B7;
    --primary-accent: #D4AF37;

    /* Deep Navy - Elegant & Timeless */
    --navy-dark: #0A1828;
    --navy-medium: #1A2F42;
    --navy-light: #2B3E50;

    /* Rich Burgundy - Luxurious Accent */
    --burgundy-color: #6B1F3D;
    --burgundy-light: #8B2F4D;

    /* Neutral Luxury Tones */
    --ivory: #FFF8F0;
    --cream: #FAF7F2;
    --champagne: #F5EFE7;
    --warm-grey: #B8B5AD;
    --charcoal: #2C2C2C;

    /* Semantic Colors */
    --secondary-color: #2B3E50;
    --success-color: #8A9A7B;
    --warning-color: #D4A574;
    --danger-color: #A83F3F;

    /* Text Colors */
    --text-dark: #1A1A1D;
    --text-medium: #4A4A4D;
    --text-light: #6A6A6D;
    --text-on-dark: #FFF8F0;

    /* Borders & Backgrounds */
    --border-color: #E0DCD3;
    --border-light: #F0ECE3;
    --bg-light: #FAF7F2;
    --bg-white: #FFFFFF;
    --bg-luxury: linear-gradient(135deg, #1A2F42 0%, #0A1828 100%);

    /* Shadows - Subtle & Sophisticated */
    --shadow-sm: 0 2px 4px 0 rgba(26, 26, 29, 0.08);
    --shadow-md: 0 4px 12px 0 rgba(26, 26, 29, 0.12);
    --shadow-lg: 0 8px 24px 0 rgba(26, 26, 29, 0.16);
    --shadow-xl: 0 12px 32px 0 rgba(26, 26, 29, 0.20);

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-dark);
    background-color: var(--bg-light);
    line-height: 1.6;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Hero Banner ===== */
.hero-banner {
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy-medium) 50%, var(--navy-light) 100%);
    color: var(--ivory);
    padding: 80px 0;
    text-align: center;
    margin-bottom: 40px;
    border-bottom: 4px solid var(--primary-color);
    position: relative;
    overflow: hidden;
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, var(--primary-color) 0%, transparent 100%);
    opacity: 0.05;
}

.hero-banner h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    letter-spacing: -0.5px;
    position: relative;
}

.hero-banner .subtitle {
    font-size: 1.35rem;
    opacity: 0.95;
    font-weight: 300;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
    position: relative;
}

/* ===== Filter Section ===== */
.filter-section {
    background: var(--bg-white);
    padding: 30px 0;
    margin-bottom: 40px;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

/* Mobile Filter Toggle Button - Hidden on Desktop */
.btn-filter-toggle {
    display: none;
    width: 100%;
    padding: 14px 20px;
    background: linear-gradient(135deg, var(--charcoal-black) 0%, var(--charcoal-light) 100%);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-md);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s ease;
    position: relative;
}

.btn-filter-toggle:active {
    transform: scale(0.98);
}

.filter-badge {
    background-color: #ef4444;
    color: white;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    position: absolute;
    top: -8px;
    right: -8px;
}

.filter-badge.hidden {
    display: none;
}

/* Filter Modal - Hidden by Default, Shows on Mobile */
.filter-modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.filter-modal-overlay.active {
    display: block;
    opacity: 1;
}

.filter-modal-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-white);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    max-height: 85vh;
    overflow-y: auto;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.filter-modal-overlay.active .filter-modal-content {
    transform: translateY(0);
}

.filter-modal-header {
    display: none;
    padding: 20px;
    border-bottom: 2px solid var(--border-color);
    position: sticky;
    top: 0;
    background: var(--bg-white);
    z-index: 10;
    align-items: center;
    justify-content: space-between;
}

.filter-modal-header h2 {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin: 0;
}

.btn-close-modal {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-light);
    cursor: pointer;
    padding: 5px 10px;
    transition: color 0.3s ease;
}

.btn-close-modal:hover {
    color: var(--text-dark);
}

.filter-modal-footer {
    display: none;
    padding: 20px;
    border-top: 2px solid var(--border-color);
    position: sticky;
    bottom: 0;
    background: var(--bg-white);
}

.btn-apply-filters {
    width: 100%;
    padding: 14px 20px;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.btn-apply-filters:active {
    transform: scale(0.98);
}

/* Desktop: Show filters inline */
@media (min-width: 769px) {
    .filter-modal-overlay {
        display: block !important;
        position: static;
        background: none;
        opacity: 1;
    }

    .filter-modal-content {
        position: static;
        max-height: none;
        overflow: visible;
        transform: none;
        border-radius: 0;
    }

    .btn-filter-toggle {
        display: none !important;
    }

    .filter-modal-header,
    .filter-modal-footer {
        display: none !important;
    }
}

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: flex-end;
}

.filter-group {
    flex: 1;
    min-width: 200px;
}

.filter-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.filter-group label i {
    color: var(--primary-color);
    margin-right: 5px;
}

.filter-select,
.filter-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    background-color: var(--bg-white);
    transition: all 0.3s ease;
    font-family: inherit;
}

.filter-select:focus,
.filter-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.price-filter {
    min-width: 280px;
}

.price-inputs {
    display: flex;
    align-items: center;
    gap: 12px;
}

.price-input-wrapper {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
}

.price-prefix {
    position: absolute;
    left: 16px;
    color: var(--text-light);
    font-weight: 600;
    font-size: 1rem;
    pointer-events: none;
    z-index: 1;
}

.price-input-wrapper input {
    width: 100%;
    padding: 12px 16px 12px 32px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: inherit;
}

.price-input-wrapper input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.price-input-wrapper input::placeholder {
    color: var(--text-light);
    opacity: 0.6;
}

.price-separator {
    color: var(--text-light);
    font-weight: 500;
    font-size: 0.875rem;
    flex-shrink: 0;
}

/* Date filter styling */
.date-filter {
    min-width: 200px;
}

.date-input {
    color: var(--text-dark);
    cursor: pointer;
}

.date-input::-webkit-calendar-picker-indicator {
    cursor: pointer;
    filter: opacity(0.6);
    transition: filter 0.3s ease;
}

.date-input::-webkit-calendar-picker-indicator:hover {
    filter: opacity(1);
}

.date-input:invalid {
    color: var(--text-light);
}

.btn-reset {
    padding: 12px 24px;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-reset:hover {
    background-color: #475569;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ===== Results Header ===== */
.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.results-count {
    font-size: 1.125rem;
    color: var(--text-dark);
    font-weight: 600;
}

.results-count span {
    color: var(--primary-color);
    font-weight: 700;
}

.sort-options {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sort-options label {
    font-size: 0.875rem;
    color: var(--text-light);
    font-weight: 600;
}

.sort-select {
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    background-color: var(--bg-white);
    cursor: pointer;
    transition: all 0.3s ease;
}

.sort-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* ===== Listings Grid ===== */
.listings-section {
    padding-bottom: 60px;
}

.listings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.listing-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-light);
}

.listing-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.card-image {
    position: relative;
    min-height: 200px;
    max-height: 300px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f5f5f5;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.listing-card:hover .card-image img {
    transform: scale(1.1);
}

.badge {
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

.badge-featured {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-accent) 100%);
    color: var(--navy-dark);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.badge-new {
    background: linear-gradient(135deg, var(--success-color) 0%, #9AB08E 100%);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.badge-budget {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
    color: var(--navy-dark);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.card-content {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card-category {
    display: inline-block;
    padding: 4px 12px;
    background-color: #ede9fe;
    color: #7c3aed;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    width: fit-content;
    letter-spacing: 0.5px;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
    line-height: 1.3;
}

.card-location {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 16px;
}

.card-location i {
    margin-right: 5px;
    color: var(--primary-color);
}

.card-details {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-dark);
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price small {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-light);
}

.size {
    font-size: 0.875rem;
    color: var(--text-light);
    font-weight: 600;
}

.size i {
    margin-right: 5px;
    color: var(--secondary-color);
}

.card-amenities {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.amenity {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background-color: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 0.875rem;
    transition: all 0.3s ease;
    cursor: help;
}

.amenity:hover {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-accent) 100%);
    color: var(--navy-dark);
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.btn-view-details {
    width: 100%;
    padding: 16px 24px;
    background: linear-gradient(135deg, var(--navy-medium) 0%, var(--navy-dark) 100%);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: auto;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.btn-view-details:hover {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-accent) 100%);
    color: var(--navy-dark);
    border-color: var(--primary-accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(197, 165, 114, 0.4);
}

.btn-view-details:active {
    transform: translateY(0);
}

/* ===== No Results ===== */
.no-results {
    text-align: center;
    padding: 80px 20px;
}

.no-results i {
    font-size: 4rem;
    color: var(--text-light);
    margin-bottom: 20px;
}

.no-results h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.no-results p {
    font-size: 1rem;
    color: var(--text-light);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .listings-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 25px;
    }
}

@media (max-width: 768px) {
    .hero-banner h1 {
        font-size: 2.25rem;
    }

    .hero-banner .subtitle {
        font-size: 1.125rem;
    }

    /* Show Mobile Filter Toggle Button */
    .btn-filter-toggle {
        display: flex;
    }

    /* Convert Filter Section to Modal on Mobile */
    .filter-section {
        position: relative;
        padding: 20px 0;
        margin-bottom: 20px;
    }

    .filter-modal-overlay {
        display: none;
    }

    .filter-modal-header,
    .filter-modal-footer {
        display: flex;
    }

    .filter-bar {
        flex-direction: column;
        padding: 20px;
    }

    .filter-group {
        width: 100%;
    }

    .price-filter,
    .date-filter {
        min-width: 100%;
    }

    .btn-reset {
        width: 100%;
        justify-content: center;
    }

    .results-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .sort-options {
        width: 100%;
        justify-content: space-between;
    }

    .listings-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .hero-banner {
        padding: 40px 0;
    }

    .hero-banner h1 {
        font-size: 1.75rem;
    }

    .hero-banner .subtitle {
        font-size: 1rem;
    }

    .filter-section {
        padding: 20px 0;
    }

    .price-inputs {
        gap: 8px;
    }

    .price-separator {
        font-size: 0.75rem;
    }

    .price-input-wrapper input {
        padding: 10px 12px 10px 28px;
        font-size: 0.9rem;
    }

    .price-prefix {
        left: 12px;
        font-size: 0.9rem;
    }

    .card-amenities {
        flex-wrap: wrap;
    }
}

/* ===== Animation ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.listing-card {
    animation: fadeIn 0.5s ease-out;
}