@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Merriweather:wght@300;400;700;900&display=swap');

/* =========================================
   DPF Consultores - Premium Architecture
   ========================================= */

:root {
    /* Color Palette */
    --clr-bg: #ffffff;
    --clr-bg-alt: #f8fafc;
    --clr-text: #1e293b;
    --clr-text-muted: #64748b;
    --clr-heading: #002855;
    
    --clr-primary: #002855; /* Navy Blue */
    --clr-primary-light: #003b7a;
    --clr-secondary: #c5a977; /* Gold */
    --clr-accent: #c5a977; /* Gold */
    --clr-accent-hover: #b39869;
    
    --clr-border: #e2e8f0;

    /* Typography */
    --font-sans: 'Inter', sans-serif;
    --font-serif: 'Merriweather', serif;
    --font-base: 'Inter', sans-serif;

    /* Spacing & Layout */
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    
    --container-width: 1200px;
    --radius: 8px;
    
    /* Effects */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =========================================
   RESET & FOUNDATION
   ========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--clr-bg);
    color: var(--clr-text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    color: var(--clr-primary);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }

p { margin-bottom: var(--spacing-md); }

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

a:hover {
    color: var(--clr-accent);
}

/* =========================================
   LAYOUT
   ========================================= */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

section {
    padding: var(--spacing-xl) 0;
}

.content-section {
    padding: 80px 0;
}

.bg-alt {
    background-color: var(--clr-bg-alt);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

/* =========================================
   COMPONENTS
   ========================================= */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-weight: 500;
    font-family: var(--font-sans);
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--clr-accent);
    color: var(--clr-primary);
}

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

.btn-outline {
    background-color: transparent;
    border-color: var(--clr-bg);
    color: var(--clr-bg);
}

.btn-outline:hover {
    background-color: var(--clr-bg);
    color: var(--clr-primary);
}

.btn-whatsapp {
    background-color: #25D366;
    color: white !important;
    border-color: #25D366;
    font-size: 1.1rem;
    padding: 14px 32px;
}

.btn-whatsapp:hover {
    background-color: #128C7E;
    border-color: #128C7E;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Header / Navbar */
.site-header {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--clr-border);
    z-index: 1000;
    transition: var(--transition);
}

.site-header.scrolled {
    box-shadow: var(--shadow-sm);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--clr-primary);
    line-height: 1;
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
    align-items: center;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--clr-primary);
    cursor: pointer;
}

/* Hero Section */
.hero {
    position: relative;
    padding-top: 160px;
    padding-bottom: 120px;
    background: linear-gradient(135deg, rgba(0, 40, 85, 0.95) 0%, rgba(0, 59, 122, 0.95) 100%), url('./assets/img/hero.jpg') center/cover no-repeat;
    color: var(--clr-bg);
    overflow: hidden;
    text-align: center;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -50px;
    right: -50px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(197, 169, 119, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero-eyebrow {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--clr-accent);
    font-weight: 600;
    display: inline-block;
    margin-bottom: var(--spacing-md);
    padding: 6px 16px;
    border: 1px solid rgba(197, 169, 119, 0.4);
    border-radius: 2px;
}

.hero h1 {
    color: var(--clr-bg);
    font-size: clamp(2.5rem, 5vw, 4rem);
}

.hero h1 em {
    font-style: normal;
    color: var(--clr-accent);
}

.hero p {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: var(--spacing-lg);
}

.hero-btns {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Page Header (Subpages) */
.page-header { 
    padding: 140px 0 80px; 
    background-color: var(--clr-bg-alt); 
    text-align: center; 
}
.page-header h1 { 
    font-size: clamp(2rem, 4vw, 3rem); 
}

/* Service Cards */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.service-card {
    background: var(--clr-bg);
    border: 1px solid var(--clr-border);
    padding: var(--spacing-lg);
    border-radius: 8px;
    transition: var(--transition);
    display: block;
    text-decoration: none;
    color: inherit;
}

a.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--clr-accent);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--clr-accent);
    margin-bottom: var(--spacing-md);
    display: block;
}

/* About Grid */
.about-grid { 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    gap: 4rem; 
    align-items: center; 
}
.about-img img { 
    width: 100%; 
    border-radius: var(--radius); 
    box-shadow: var(--shadow-lg); 
}
.about-content ul { 
    list-style-type: none; 
    margin-top: 1.5rem; 
}
.about-content li { 
    position: relative; 
    padding-left: 1.5rem; 
    margin-bottom: 1rem; 
    color: var(--clr-text-muted);
}
.about-content li::before { 
    content: '✓'; 
    position: absolute; 
    left: 0; 
    color: var(--clr-accent); 
    font-weight: bold; 
}

/* Contact Section */
.contact-section { 
    background-color: var(--clr-primary); 
    color: white; 
    text-align: center; 
    padding: 100px 0; 
}
.contact-section h2 { 
    color: white; 
    margin-bottom: 1.5rem; 
    font-size: 2.5rem; 
}
.contact-section p { 
    font-size: 1.2rem; 
    margin-bottom: 2rem; 
    max-width: 600px; 
    margin-left: auto; 
    margin-right: auto; 
    opacity: 0.9; 
}
.contact-actions { 
    display: flex; 
    flex-direction: column; 
    gap: 1.5rem; 
    align-items: center; 
}
.contact-info-text { 
    font-size: 1.1rem; 
    margin-top: 1rem; 
    color: rgba(255,255,255,0.8);
}

/* Footer */
.site-footer {
    background-color: var(--clr-primary-light);
    color: rgba(255,255,255,0.7);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.footer-col h3 {
    color: var(--clr-bg);
    font-size: 1.2rem;
}

.footer-col p {
    font-size: 0.95rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
}

.footer-links a:hover {
    color: var(--clr-accent);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: var(--spacing-md);
    font-size: 0.85rem;
}

/* =========================================
   MEDIA QUERIES (Responsive)
   ========================================= */
@media (max-width: 768px) {
    h1 { font-size: 2.2rem; }
    h2 { font-size: 2rem; }
    
    .nav-links { 
        display: none; 
        position: absolute; 
        top: 100%; 
        left: 0; 
        width: 100%; 
        background: var(--clr-bg); 
        flex-direction: column; 
        gap: 0; 
        padding: 1rem 0; 
        box-shadow: var(--shadow-md); 
        border-top: 1px solid var(--clr-border); 
    }
    .nav-links.active { display: flex; }
    .nav-links li { width: 100%; text-align: center; }
    .nav-links a { display: block; padding: 1rem; color: var(--clr-text); }
    .mobile-menu-btn { display: block; }
    
    .hero {
        padding-top: 120px;
    }
    .hero-btns { flex-direction: column; }
    .about-grid { grid-template-columns: 1fr; gap: 2rem; }
}