/* ============================================
   A.d.a.l. — Inmobiliaria en Alcorcón
   Classic & Elegant Design System
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    --color-forest: #1C3A28;
    --color-forest-light: #2A5240;
    --color-forest-dark: #142B1E;
    --color-cream: #F5F5F0;
    --color-cream-dark: #EDEDE8;
    --color-warm: #E8E4DC;
    --color-text: #2C2C2C;
    --color-text-light: #5A5A5A;
    --color-text-muted: #8A8A8A;
    --color-white: #FFFFFF;
    --color-gold: #C9A96E;
    --color-gold-light: #D4BA8A;
    
    --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-sans: 'Lato', 'Segoe UI', Helvetica, Arial, sans-serif;
    
    --shadow-sm: 0 1px 3px rgba(28, 58, 40, 0.08);
    --shadow-md: 0 4px 20px rgba(28, 58, 40, 0.10);
    --shadow-lg: 0 8px 40px rgba(28, 58, 40, 0.12);
    --shadow-xl: 0 16px 60px rgba(28, 58, 40, 0.15);
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background-color: var(--color-cream);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

ul {
    list-style: none;
}

/* --- Utility --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Typography --- */
h1, h2, h3, h4 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-forest);
}

.section-label {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-gold);
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    margin-bottom: 20px;
    color: var(--color-forest);
}

.section-desc {
    font-size: 1.1rem;
    color: var(--color-text-light);
    max-width: 560px;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header .section-desc {
    margin: 0 auto;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--color-forest-light);
    border-color: var(--color-forest-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-light {
    background: var(--color-white);
    color: var(--color-forest);
    border-color: var(--color-white);
}

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

.btn-outline-light {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.6);
}

.btn-outline-light:hover {
    background: var(--color-white);
    color: var(--color-forest);
    border-color: var(--color-white);
}

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

/* --- Header --- */
#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

#header.scrolled {
    background: rgba(245, 245, 240, 0.97);
    backdrop-filter: blur(10px);
    padding: 12px 0;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1;
}

.logo-mark {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.05em;
    transition: var(--transition);
}

.logo-sub {
    font-family: var(--font-sans);
    font-size: 0.65rem;
    font-weight: 400;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 2px;
    transition: var(--transition);
}

#header.scrolled .logo-mark {
    color: var(--color-forest);
}

#header.scrolled .logo-sub {
    color: var(--color-text-muted);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 36px;
}

.nav-menu a {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 0.05em;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-gold);
    transition: var(--transition);
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-menu a:hover {
    color: var(--color-white);
}

#header.scrolled .nav-menu a {
    color: var(--color-text-light);
}

#header.scrolled .nav-menu a:hover {
    color: var(--color-forest);
}

.nav-menu .btn {
    padding: 10px 24px;
    font-size: 0.8rem;
}

#header.scrolled .nav-menu .btn-primary {
    background: var(--color-forest);
    color: var(--color-white);
    border-color: var(--color-forest);
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.mobile-toggle .bar {
    width: 24px;
    height: 2px;
    background: var(--color-white);
    transition: var(--transition);
    border-radius: 2px;
}

#header.scrolled .mobile-toggle .bar {
    background: var(--color-forest);
}

.mobile-toggle.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active .bar:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        linear-gradient(135deg, 
            rgba(28, 58, 40, 0.85) 0%, 
            rgba(42, 82, 64, 0.75) 40%,
            rgba(201, 169, 110, 0.4) 100%),
        url('https://picsum.photos/seed/adal-hero/1920/1080') center/cover no-repeat;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, 
        rgba(20, 43, 30, 0.3) 0%, 
        rgba(20, 43, 30, 0.1) 50%,
        rgba(20, 43, 30, 0.5) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding-top: 80px;
}

.hero-label {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--color-gold-light);
    margin-bottom: 24px;
    padding: 8px 20px;
    border: 1px solid rgba(201, 169, 110, 0.4);
    border-radius: 50px;
}

.hero-title {
    font-size: clamp(2.25rem, 6vw, 4.5rem);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 24px;
    line-height: 1.1;
}

.hero-title em {
    font-style: italic;
    color: var(--color-gold-light);
}

.hero-desc {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: rgba(255, 255, 255, 0.85);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    animation: float 2s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* --- Stats Bar --- */
.stats-bar {
    background: var(--color-forest);
    padding: 48px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    text-align: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-number {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-gold-light);
    line-height: 1;
}

.stat-label {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 0.05em;
}

/* --- About --- */
.about {
    padding: 120px 0;
    background: var(--color-cream);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-image-wrapper {
    position: relative;
}

.about-image-wrapper img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.about-accent {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 200px;
    height: 200px;
    background: var(--color-forest);
    border-radius: var(--radius-md);
    z-index: -1;
    opacity: 0.1;
}

.about-content p {
    font-size: 1.05rem;
    color: var(--color-text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-features {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.about-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--color-text);
}

.about-features li svg {
    color: var(--color-gold);
    flex-shrink: 0;
}

/* --- Services --- */
.services {
    padding: 120px 0;
    background: var(--color-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.service-card {
    padding: 40px 28px;
    background: var(--color-cream);
    border-radius: var(--radius-md);
    transition: var(--transition);
    border: 1px solid transparent;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-gold-light);
    background: var(--color-white);
}

.service-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-forest);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    color: var(--color-gold-light);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: var(--color-forest-light);
    transform: scale(1.05);
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--color-forest);
}

.service-card p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* --- Properties --- */
.properties {
    padding: 120px 0;
    background: var(--color-cream);
}

.properties-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 48px;
}

.property-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.property-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.property-image {
    position: relative;
    overflow: hidden;
    height: 260px;
}

.property-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.property-card:hover .property-image img {
    transform: scale(1.05);
}

.property-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 16px;
    background: var(--color-forest);
    color: var(--color-white);
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border-radius: 50px;
}

.property-info {
    padding: 24px;
}

.property-info h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
    color: var(--color-forest);
}

.property-location {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 12px;
}

.property-desc {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.properties-cta {
    text-align: center;
}

/* --- Testimonials --- */
.testimonials {
    padding: 120px 0;
    background: var(--color-white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.testimonial-card {
    padding: 40px 32px;
    background: var(--color-cream);
    border-radius: var(--radius-md);
    position: relative;
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.quote-icon {
    color: var(--color-gold);
    margin-bottom: 20px;
    opacity: 0.6;
}

.testimonial-text {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    font-style: italic;
    color: var(--color-text);
    line-height: 1.8;
    margin-bottom: 24px;
}

.testimonial-author {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-forest);
    letter-spacing: 0.05em;
}

/* --- CTA Section --- */
.cta-section {
    position: relative;
    padding: 120px 0;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    inset: 0;
    background: 
        linear-gradient(135deg, 
            rgba(28, 58, 40, 0.92) 0%, 
            rgba(42, 82, 64, 0.88) 100%),
        url('https://picsum.photos/seed/adal-cta/1920/800') center/cover no-repeat;
}

.cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    color: var(--color-white);
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
    line-height: 1.8;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* --- Contact --- */
.contact {
    padding: 120px 0;
    background: var(--color-cream);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-info p {
    font-size: 1.05rem;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-item {
    display: flex;
    gap: 20px;
}

.contact-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-forest);
    border-radius: var(--radius-md);
    color: var(--color-gold-light);
    flex-shrink: 0;
}

.contact-item strong {
    display: block;
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-forest);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin: 0;
    line-height: 1.6;
}

.contact-item a:hover {
    color: var(--color-forest);
    text-decoration: underline;
}

/* Form */
.contact-form-wrapper {
    background: var(--color-white);
    padding: 48px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    padding: 14px 16px;
    border: 1px solid var(--color-warm);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    color: var(--color-text);
    background: var(--color-cream);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-forest);
    background: var(--color-white);
    box-shadow: 0 0 0 3px rgba(28, 58, 40, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-note {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-align: center;
}

.form-success {
    text-align: center;
    padding: 40px 20px;
}

.form-success svg {
    color: var(--color-forest);
    margin-bottom: 20px;
}

.form-success h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
    color: var(--color-forest);
}

.form-success p {
    color: var(--color-text-light);
    line-height: 1.7;
}

/* --- Footer --- */
footer {
    background: var(--color-forest-dark);
    padding: 80px 0 0;
    color: rgba(255, 255, 255, 0.7);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: 60px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo-mark {
    color: var(--color-white);
    font-size: 2rem;
}

.footer-brand p {
    margin-top: 16px;
    font-size: 0.9rem;
    line-height: 1.7;
    max-width: 300px;
}

.footer-links h4,
.footer-contact h4 {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-gold-light);
    margin-bottom: 20px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

.footer-links a:hover {
    color: var(--color-white);
    padding-left: 4px;
}

.footer-contact p {
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.footer-contact a:hover {
    color: var(--color-white);
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .properties-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-grid .testimonial-card:last-child {
        grid-column: span 2;
        max-width: 50%;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--color-forest-dark);
        flex-direction: column;
        justify-content: center;
        gap: 28px;
        padding: 40px;
        transition: var(--transition);
        box-shadow: var(--shadow-xl);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-menu a {
        color: rgba(255, 255, 255, 0.85);
        font-size: 1rem;
    }
    
    .nav-menu a:hover {
        color: var(--color-gold-light);
    }
    
    .hero-title {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
    }
    
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }
    
    .stat-number {
        font-size: 1.75rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .about-image-wrapper img {
        height: 350px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .properties-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid .testimonial-card:last-child {
        grid-column: span 1;
        max-width: 100%;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .contact-form-wrapper {
        padding: 32px 24px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-content {
        padding-top: 60px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    .about,
    .services,
    .properties,
    .testimonials,
    .contact {
        padding: 80px 0;
    }
}

/* --- Animations --- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }