/* ==========================================================================
   1. Design System Variables
   ========================================================================== */
:root {
  --blue-dark: #0A192F;
  --blue-main: #172A45;
  --blue-light: #2A4365;
  --blue-footer: #4B6B8A;
  --white: #FFFFFF;
  --bg-gray: #F8FAFC;
  --text-dark: #1E293B;
  --text-gray: #475569;
  --wa-green: #25D366;
  
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --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);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.15);
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   2. Base Styles & Resets
   ========================================================================== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
h1, h2, h3, h4 { font-family: var(--font-heading); color: var(--blue-dark); font-weight: 700; }

/* ==========================================================================
   3. Layout Utilities
   ========================================================================== */
.container { width: 90%; max-width: 1200px; margin: 0 auto; }
.section { padding: 100px 0; }
.bg-light { background-color: var(--bg-gray); }
.text-center { text-align: center; }
.mt-4 { margin-top: 40px; }
.w-100 { width: 100%; }
.max-w-m { max-width: 600px; margin-left: auto; margin-right: auto; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }

/* ==========================================================================
   4. UI Components
   ========================================================================== */
/* Typography Elements */
.tag { display: inline-block; font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 2px; color: var(--blue-light); margin-bottom: 10px; }
.section-title { font-size: 2.5rem; margin-bottom: 20px; }
.lead-text { font-size: 1.1rem; color: var(--text-gray); margin-bottom: 20px; font-weight: 500; }

/* Buttons */
.btn { display: inline-block; padding: 14px 30px; font-family: var(--font-heading); font-weight: 600; text-decoration: none; border-radius: 4px; cursor: pointer; transition: var(--transition); border: 2px solid transparent; }
.btn-primary { background: var(--blue-main); color: var(--white); }
.btn-primary:hover { background: var(--blue-light); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.btn-outline { background: transparent; color: var(--white); border-color: var(--white); }
.btn-outline:hover { background: var(--white); color: var(--blue-dark); }
.btn-whatsapp { background: var(--wa-green); color: var(--white); font-size: 1.1rem; }
.btn-whatsapp:hover { background: #1EBE57; transform: translateY(-2px); }

/* Navigation */
.header { position: fixed; top: 0; width: 100%; z-index: 1000; background: transparent; box-shadow: none; padding: 15px 0; transition: var(--transition); }
.header.scrolled { background: var(--blue-footer); padding: 8px 0; box-shadow: var(--shadow-md); }
.nav-container { display: flex; justify-content: space-between; align-items: center; }

.logo { display: flex; align-items: center; text-decoration: none; }
.logo img { height: 85px; transition: var(--transition); } 
.header.scrolled .logo img { height: 65px; }

.nav-menu ul { display: flex; gap: 30px; list-style: none; align-items: center; }
.nav-link { text-decoration: none; color: var(--white); font-weight: 500; transition: var(--transition); font-size: 0.95rem; }
.nav-link:hover { color: #e2e8f0; opacity: 1; }
.nav-toggle { display: none; background: none; border: none; font-size: 1.8rem; color: var(--white); cursor: pointer; }

/* Floating Action Button */
.float-wa { position: fixed; bottom: 30px; right: 30px; background: var(--wa-green); color: #FFFFFF !important; width: 65px; height: 65px; border-radius: 50%; display: flex; justify-content: center; align-items: center; font-size: 2.5rem; text-decoration: none !important; border: none !important; outline: none !important; z-index: 9999; box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4); transition: transform 0.3s; }
.float-wa i { text-decoration: none !important; margin-top: 2px; }
.float-wa:hover, .float-wa:focus, .float-wa:active { color: #FFFFFF !important; text-decoration: none !important; transform: scale(1.1); }

/* ==========================================================================
   5. Sections
   ========================================================================== */
/* Hero */
.hero { position: relative; height: 100vh; display: flex; align-items: center; padding-top: 80px; overflow: hidden; }
.hero-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-size: cover; background-position: center; background-attachment: fixed; z-index: 1; animation: heroZoom 25s infinite alternate linear; }
.hero-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(to right, rgba(10,25,47,0.85) 0%, rgba(10,25,47,0.5) 100%); z-index: 2; }
.hero-content { position: relative; z-index: 3; color: var(--white); max-width: 800px; }
.hero-subtitle { font-family: var(--font-heading); letter-spacing: 3px; font-size: 0.9rem; margin-bottom: 15px; display: block; color: #cbd5e1; }
.hero-title { font-size: 4rem; color: var(--white); line-height: 1.1; margin-bottom: 20px; }
.hero-text { font-size: 1.2rem; margin-bottom: 40px; color: #e2e8f0; }
.hero-actions { display: flex; gap: 15px; }

/* About */
.rounded-img { border-radius: 8px; width: 100%; object-fit: cover; }
.nosotros-image { position: relative; }
.floating-badge { position: absolute; bottom: -20px; right: -20px; background: var(--white); padding: 20px; border-radius: 8px; display: flex; align-items: center; gap: 15px; border-left: 4px solid var(--blue-main); }
.floating-badge i { font-size: 2rem; color: var(--blue-main); }
.floating-badge strong { display: block; font-size: 1.5rem; color: var(--blue-dark); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 30px; }
.feature-item { text-align: center; padding: 20px; border-radius: 8px; transition: var(--transition); border: 1px solid transparent; }
.feature-item i { font-size: 2.5rem; color: var(--blue-light); margin-bottom: 15px; transition: var(--transition); }
.feature-item h4 { transition: var(--transition); }
.feature-item:hover { transform: translateY(-8px); background: var(--white); box-shadow: var(--shadow-md); border-color: #e2e8f0; }
.feature-item:hover i { color: var(--blue-main); transform: scale(1.15); }

/* Financing Cards */
.logos-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.credito-card { background: var(--white); padding: 40px 20px 65px 20px; border-radius: 8px; border: 1px solid #e2e8f0; transition: var(--transition); position: relative; overflow: hidden; display: flex; flex-direction: column; align-items: center; }
.credito-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); border-color: var(--blue-light); }
.credito-card h3 { font-size: 1.5rem; margin-bottom: 10px; color: var(--blue-main); }
.credito-card p { color: var(--text-gray); }

.btn-credito { position: absolute; bottom: -40px; left: 50%; transform: translateX(-50%); background: var(--blue-main); color: var(--white); padding: 8px 22px; border-radius: 4px; font-family: var(--font-heading); font-weight: 600; font-size: 0.9rem; text-decoration: none; opacity: 0; transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1); white-space: nowrap; }
.credito-card:hover .btn-credito { bottom: 20px; opacity: 1; }
.btn-credito:hover { background: var(--blue-light); color: var(--white); }

/* Project Gallery */
.gallery-main { border-radius: 8px; overflow: hidden; position: relative; height: 500px; background: #000; }
.gallery-main img { width: 100%; height: 100%; object-fit: cover; transition: opacity 0.5s ease; opacity: 1; }
.gallery-main img.fade { opacity: 0.6; }
.gallery-thumbs { display: grid; grid-template-columns: repeat(7, 1fr); gap: 10px; margin-top: 15px; }
.thumb { height: 90px; border-radius: 4px; cursor: pointer; opacity: 0.5; transition: var(--transition); width: 100%; object-fit: cover; }
.thumb:hover { opacity: 0.8; }
.thumb.active { opacity: 1; border: 3px solid var(--blue-main); }
.amenities-row { display: flex; justify-content: center; flex-wrap: wrap; gap: 30px; background: var(--blue-dark); color: var(--white); padding: 20px; border-radius: 8px; }
.amenities-row span { display: flex; align-items: center; gap: 8px; font-weight: 500; }

/* Contact & Glassmorphism */
.contact-section { background: var(--blue-dark); color: var(--white); }
.contact-section h2 { color: var(--white); }
.contact-cards { display: flex; flex-direction: column; gap: 20px; margin: 30px 0; }
.contact-card { display: flex; align-items: flex-start; gap: 15px; background: rgba(255,255,255,0.05); padding: 20px; border-radius: 8px; border: 1px solid rgba(255,255,255,0.1); transition: var(--transition); }
.contact-card:hover { background: rgba(255,255,255,0.1); transform: translateX(5px); border-color: var(--blue-light); }
.contact-card i { font-size: 1.5rem; color: var(--wa-green); margin-top: 3px; }
.contact-card strong { display: block; font-size: 1.1rem; color: var(--white); margin-bottom: 5px; }
.contact-card span { color: #cbd5e1; font-size: 0.95rem; line-height: 1.4; display: block; }

.social-section { margin-top: 30px; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 25px; }
.social-section h3 { font-size: 1.1rem; color: var(--white); margin-bottom: 15px; font-weight: 500; }
.social-buttons { display: flex; flex-wrap: wrap; gap: 15px; }
.social-btn { display: flex; align-items: center; gap: 10px; padding: 12px 25px; border-radius: 50px; background: transparent; color: var(--white); border: 1px solid rgba(255,255,255,0.2); text-decoration: none; font-weight: 500; transition: var(--transition); }
.social-btn i { font-size: 1.2rem; }
.social-btn:hover { background: var(--blue-light); border-color: var(--blue-light); transform: translateY(-3px); }

.number-link { font-size: 1.2rem; font-weight: 600; color: var(--white) !important; }
.social-link { color: #cbd5e1; text-decoration: none; transition: var(--transition); }
.social-link:hover { color: var(--white); text-decoration: underline; }

.glass-panel { background: rgba(255, 255, 255, 0.05); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); padding: 40px; border-radius: 12px; color: var(--white); border: 1px solid rgba(255, 255, 255, 0.1); box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4), inset 0 0 0 1px rgba(255, 255, 255, 0.05); }
.glass-panel h3 { margin-bottom: 25px; font-size: 1.6rem; color: var(--white); }
.input-group { margin-bottom: 20px; }
.input-group label { display: block; font-weight: 500; margin-bottom: 8px; font-size: 0.9rem; color: #cbd5e1; }
.input-group input, .input-group select, .input-group textarea { width: 100%; padding: 12px 15px; background: rgba(255,255,255,0.92); border: 1px solid rgba(255,255,255,0.2); border-radius: 6px; font-family: var(--font-body); transition: var(--transition); font-size: 1rem; color: var(--blue-dark); }
.input-group input:focus, .input-group select:focus, .input-group textarea:focus { background: var(--white); outline: none; border-color: var(--blue-light); box-shadow: 0 0 15px rgba(255,255,255,0.1); }

/* Footer */
footer { background: var(--blue-footer); color: var(--white); padding: 60px 0 40px 0; }
.footer-flex { display: flex; justify-content: space-between; align-items: center; }
.footer-logo { margin-bottom: 15px; }
.footer-logo img { height: 95px; } 
.footer-slogan { font-size: 1rem; color: #E2E8F0; margin-top: 10px; font-weight: 500; }
.footer-copy { color: #CBD5E1; font-size: 0.9rem; text-align: right; }
.footer-legal { margin-top: 10px; font-size: 0.85rem; }
.footer-legal a { color: #94A3B8; text-decoration: none; transition: var(--transition); margin: 0 5px; }
.footer-legal a:hover { color: var(--white); text-decoration: underline; }

/* ==========================================================================
   6. Animations
   ========================================================================== */
@keyframes heroZoom { 0% { transform: scale(1); } 100% { transform: scale(1.15); } }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); } 70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); } 100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); } }

.animate-on-scroll { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease-out, transform 0.8s ease-out; }
.fade-right { transform: translateX(-40px); }
.fade-left { transform: translateX(40px); }
.animate-on-scroll.show { opacity: 1; transform: translate(0, 0); }

/* ==========================================================================
   7. Media Queries
   ========================================================================== */
@media (max-width: 992px) {
  .grid-2 { grid-template-columns: 1fr; }
  .hero-title { font-size: 3rem; }
  .gallery-main { height: 350px; }
  .logos-grid { grid-template-columns: 1fr; }
  .gallery-thumbs { grid-template-columns: repeat(4, 1fr); }
  .footer-flex { flex-direction: column; text-align: center; gap: 20px; }
  .footer-copy { text-align: center; }
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-menu { position: absolute; top: 100%; left: -100%; width: 100%; background: var(--blue-footer); padding: 20px; box-shadow: var(--shadow-md); transition: var(--transition); }
  .nav-menu.active { left: 0; }
  .nav-menu ul { flex-direction: column; align-items: flex-start; }
  .hero-actions { flex-direction: column; }
  .features-grid { grid-template-columns: 1fr; }
  .floating-badge { bottom: 10px; right: 10px; padding: 10px; }
  .gallery-thumbs { grid-template-columns: repeat(3, 1fr); }
}