@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700&family=Inter:wght@300;400;500;600&display=swap');

/* ===== Variables ===== */
:root {
    --primary: #1a2744;
    --gold: #c9a84c;
    --gold-light: #e2c06a;
    --cream: #f5f0e8;
    --cream-light: #faf7f2;
    --white: #ffffff;
    --text: #2c3444;
    --text-light: #6b7280;
    --border: #e5e0d8;
    --shadow: rgba(26, 39, 68, 0.08);
    --shadow-md: rgba(26, 39, 68, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    overflow-x: hidden;
    max-width: 100%;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--cream-light);
    color: var(--text);
    line-height: 1.7;
}

h1, h2, h3, h4 {
    font-family: 'Playfair Display', serif;
}

/* ===== Header ===== */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    animation: slideDown 0.5s ease;
}

@keyframes slideDown {
    from { transform: translateY(-100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.header-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 5%;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo a {
    text-decoration: none;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 14px;
    line-height: 1;
}

.logo-img {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    object-fit: cover;
    flex-shrink: 0;
    animation: logoPulse 3.5s ease-in-out infinite;
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes logoPulse {
    0%, 100% { box-shadow: 0 2px 10px rgba(26, 39, 68, 0.14); }
    50%       { box-shadow: 0 4px 22px rgba(201, 168, 76, 0.38); }
}

.logo a:hover .logo-img {
    transform: scale(1.1) rotate(3deg);
    animation-play-state: paused;
    box-shadow: 0 6px 24px rgba(201, 168, 76, 0.45);
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.logo h1 {
    font-family: 'Playfair Display', serif;
    font-size: 1.9rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -1px;
    margin: 0;
    transition: color 0.3s ease;
}

.logo a:hover h1 { color: var(--gold); }

.logo-accent {
    color: var(--gold);
}

.logo-subtitle {
    font-family: 'Inter', sans-serif;
    font-size: 0.68rem;
    font-weight: 500;
    color: var(--text-light);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 2px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 36px;
    margin: 0;
    padding: 0;
}

nav ul li a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    position: relative;
    padding-bottom: 4px;
    transition: color 0.3s ease;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--gold);
    transition: width 0.4s ease;
}

nav ul li a:hover,
nav ul li a.active {
    color: var(--primary);
}

nav ul li a:hover::after,
nav ul li a.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--primary);
    transition: all 0.3s ease;
    transform-origin: center;
}

.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Page Header ===== */
.properties-page-main {
    padding-top: 80px;
}

.page-header {
    background: var(--primary);
    padding: 80px 5%;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('https://images.unsplash.com/photo-1560518883-ce09059eeffa?w=1600&q=70&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    opacity: 0.08;
}

.page-header-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-tag {
    display: inline-block;
    color: var(--gold);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.page-header h1 {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    color: var(--white);
    margin-bottom: 18px;
}

.page-header p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 540px;
    margin: 0 auto;
}

/* ===== Filters ===== */
.filters-container {
    display: flex;
    justify-content: center;
    gap: 12px;
    padding: 48px 5% 0;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 11px 28px;
    border: 1.5px solid var(--border);
    background: var(--white);
    color: var(--text-light);
    border-radius: 3px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.88rem;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    font-family: 'Inter', sans-serif;
}

.filter-btn:hover {
    border-color: var(--gold);
    color: var(--primary);
}

.filter-btn.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

/* ===== Category Sections ===== */
.property-category {
    padding: 60px 5%;
    max-width: 1300px;
    margin: 0 auto;
    transition: opacity 0.3s ease;
}

.property-category.hiding {
    opacity: 0;
}

.property-category.showing {
    animation: slideInCategory 0.5s ease forwards;
}

@keyframes slideInCategory {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.category-title {
    font-size: 1.6rem;
    color: var(--primary);
    margin-bottom: 36px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
    position: relative;
}

.category-title::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--gold);
}

/* ===== Property Grid ===== */
.property-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

/* ===== Property Card ===== */
.property-card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all 0.45s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.property-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px var(--shadow-md);
    border-color: transparent;
}

/* Property Images */
.property-image {
    width: 100%;
    height: 240px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(90deg, #e8e4dc 25%, #f0ece4 50%, #e8e4dc 75%);
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.4s infinite;
}

@keyframes skeleton-shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.property-image:has(.loaded),
.property-image:has(.property-img-empty) {
    background: none;
    animation: none;
}

.property-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
    opacity: 0;
    transition: opacity 0.35s ease;
}

.property-img.loaded {
    opacity: 1;
}

.property-img-empty {
    width: 100%;
    height: 100%;
    background: var(--cream);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 0.85rem;
}

.property-card:hover .property-image {
    transform: scale(1.03);
}
.property-card:hover .property-img {
    transform: scale(1.03);
    transition: opacity 0.35s ease, transform 0.5s ease;
}

.property-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--gold);
    color: var(--primary);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    padding: 6px 14px;
    border-radius: 3px;
}

/* Image placeholders */
.prop-image-1 {
    background-image: url('https://images.unsplash.com/photo-1600585154340-be6161a56a0c?w=800&q=80&auto=format&fit=crop');
}
.prop-image-2 {
    background-image: url('https://images.unsplash.com/photo-1522708323590-d24dbb6b0267?w=800&q=80&auto=format&fit=crop');
}
.prop-image-3 {
    background-image: url('https://images.unsplash.com/photo-1500382017468-9049fed747ef?w=800&q=80&auto=format&fit=crop');
}
.prop-image-4 {
    background-image: url('https://images.unsplash.com/photo-1568605114967-8130f3a36994?w=800&q=80&auto=format&fit=crop');
}
.prop-image-5 {
    background-image: url('https://images.unsplash.com/photo-1497366216548-37526070297c?w=800&q=80&auto=format&fit=crop');
}

/* Property Info */
.property-info {
    padding: 24px 24px 28px;
}

.property-type {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 10px;
}

.property-info h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 10px;
    line-height: 1.35;
}

.property-price {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 18px;
    letter-spacing: -0.5px;
}

.property-specs {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 22px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.property-specs span {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-light);
}

.property-specs svg {
    width: 14px;
    height: 14px;
    opacity: 0.6;
    flex-shrink: 0;
}

.ver-mas-btn {
    display: inline-block;
    background: var(--primary);
    color: var(--white);
    padding: 13px 30px;
    border-radius: 3px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    transition: all 0.35s ease;
    width: 100%;
    text-align: center;
    border: 2px solid var(--primary);
}

.ver-mas-btn:hover {
    background: var(--gold);
    border-color: var(--gold);
    color: var(--primary);
}

/* ===== Card Animations ===== */
@keyframes cardSlideIn {
    from { opacity: 0; transform: translateY(30px) scale(0.96); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes shimmer {
    0%   { background-position: -200% center; }
    100% { background-position: 200% center; }
}
@keyframes glowPulse {
    0%, 100% { box-shadow: 0 4px 15px rgba(201,168,76,0.25); }
    50%       { box-shadow: 0 8px 32px rgba(201,168,76,0.55); }
}
@keyframes badgePulse {
    0%, 100% { transform: scale(1); }
    50%       { transform: scale(1.07); }
}
@keyframes filterSlide {
    from { opacity: 0; transform: translateY(-15px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes categoryLineGrow {
    from { width: 0; opacity: 0; }
    to   { width: 50px; opacity: 1; }
}
@keyframes fadeLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to   { opacity: 1; transform: translateX(0); }
}
@keyframes ripple {
    0%   { transform: scale(0); opacity: 0.4; }
    100% { transform: scale(3.5); opacity: 0; }
}

.property-card.card-animate {
    animation: cardSlideIn 0.55s cubic-bezier(0.16, 1, 0.3, 1) both;
}

/* Reveal states (scroll observer) */
.reveal {
    opacity: 0;
    transition: opacity 0.65s cubic-bezier(0.16,1,0.3,1),
                transform 0.65s cubic-bezier(0.16,1,0.3,1);
}
.reveal.up    { transform: translateY(40px); }
.reveal.scale { transform: scale(0.88); }
.reveal.animate-in { opacity: 1; transform: none; }

/* Page header content stagger */
.page-header-content .section-tag { animation: filterSlide 0.6s ease 0.2s both; }
.page-header-content h1           { animation: filterSlide 0.7s cubic-bezier(0.16,1,0.3,1) 0.35s both; }
.page-header-content p            { animation: filterSlide 0.6s ease 0.5s both; }

/* Filter buttons stagger */
.filter-btn {
    animation: filterSlide 0.5s ease both;
    position: relative;
    overflow: hidden;
}
.filter-btn:nth-child(1) { animation-delay: 0.1s; }
.filter-btn:nth-child(2) { animation-delay: 0.18s; }
.filter-btn:nth-child(3) { animation-delay: 0.26s; }
.filter-btn:nth-child(4) { animation-delay: 0.34s; }
.filter-btn:nth-child(5) { animation-delay: 0.42s; }

/* Active filter fill sweep */
.filter-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0.15);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.35s ease;
    border-radius: inherit;
}
.filter-btn.active::after { transform: scaleX(1); }

/* Category title line draw */
.category-title {
    animation: fadeLeft 0.6s ease both;
}
.category-title::after {
    animation: categoryLineGrow 0.6s cubic-bezier(0.16,1,0.3,1) 0.3s both;
}

/* Badge pulse */
.property-badge {
    animation: badgePulse 2.5s ease-in-out infinite;
}

/* Price shimmer on card hover */
.property-card:hover .property-price {
    background: linear-gradient(90deg, var(--primary), var(--gold), var(--primary));
    background-size: 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 2s linear infinite;
}

/* Specs icons pop */
.property-specs svg {
    transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
}
.property-card:hover .property-specs svg {
    transform: scale(1.3);
    opacity: 1;
}

/* Ver más btn shine sweep */
.ver-mas-btn {
    position: relative;
    overflow: hidden;
}
.ver-mas-btn::after {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 60%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transform: skewX(-20deg);
    transition: left 0.5s ease;
}
.ver-mas-btn:hover::after { left: 150%; }
.ver-mas-btn:hover {
    animation: glowPulse 1s ease infinite;
}

/* Property type tag underline draw */
.property-type::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 0;
    width: 0; height: 1px;
    background: var(--gold);
    transition: width 0.3s ease;
}
.property-type { position: relative; display: inline-block; }
.property-card:hover .property-type::after { width: 100%; }

/* 3D tilt on card hover */
.property-card {
    perspective: 900px;
    transform-style: preserve-3d;
}

/* Footer link hover */
.footer-section ul li a:hover { letter-spacing: 0.5px; }

/* ===== Footer ===== */
footer {
    background: var(--primary);
    color: var(--white);
    padding: 60px 5% 24px;
    margin-top: 40px;
}

.footer-content {
    max-width: 1300px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 50px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.7rem;
    color: var(--white);
    margin-bottom: 4px;
}

.footer-brand-sub {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 14px;
}

.footer-desc {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.55);
    max-width: 260px;
}

.footer-section h4 {
    font-family: 'Inter', sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 18px;
}

.footer-section ul {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 0.85rem;
    transition: all 0.3s ease;
    display: inline-block;
}

.footer-section ul li a:hover {
    color: var(--gold);
    transform: translateX(4px);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
    margin-bottom: 6px;
}

.footer-bottom {
    max-width: 1300px;
    margin: 20px auto 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.38);
}

/* ===== Responsive ===== */
@media (max-width: 1000px) {
    .property-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-container {
        height: 70px;
    }

    .menu-toggle {
        display: flex;
    }

    #main-nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        border-bottom: 1px solid var(--border);
        padding: 20px 5%;
        transform: translateY(-120vh);
        visibility: hidden;
        transition: transform 0.4s ease, visibility 0.4s ease;
        z-index: 999;
        box-shadow: 0 10px 30px rgba(26,39,68,0.1);
    }

    #main-nav.open {
        transform: translateY(0);
    }

    #main-nav ul {
        flex-direction: column;
        gap: 6px;
    }

    #main-nav ul li a {
        font-size: 1rem;
        padding: 12px 0;
        display: block;
        border-bottom: 1px solid var(--border);
    }

    .properties-page-main {
        padding-top: 70px;
    }

    .property-grid {
        grid-template-columns: 1fr;
    }

    .property-category {
        padding: 40px 5%;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .page-header h1 {
        font-size: 1.8rem;
    }

    .filters-container {
        gap: 8px;
        padding: 32px 5% 0;
    }

    .filter-btn {
        padding: 9px 16px;
        font-size: 0.82rem;
    }

    .property-info {
        padding: 18px 18px 22px;
    }

    .property-price {
        font-size: 1.3rem;
    }
}

/* ===== Firebase Loading / Empty States ===== */
.hidden { display: none !important; }

.props-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 100px 20px;
    color: var(--text-light);
}

.props-spinner {
    width: 44px;
    height: 44px;
    border: 3px solid var(--border);
    border-top-color: var(--gold);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.props-empty {
    text-align: center;
    padding: 100px 20px;
    max-width: 480px;
    margin: 0 auto;
}

.props-empty-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.props-empty h3 {
    font-size: 1.4rem;
    color: var(--primary);
    margin-bottom: 12px;
}

.props-empty p {
    color: var(--text-light);
    margin-bottom: 28px;
}

.btn-primary-link {
    display: inline-block;
    background: var(--primary);
    color: var(--white);
    padding: 13px 32px;
    border-radius: 3px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.88rem;
    letter-spacing: 0.5px;
    transition: background 0.3s ease;
}

.btn-primary-link:hover {
    background: var(--gold);
    color: var(--primary);
}