/* ===========================================
   GRUPO CORSA - ESTILOS PRINCIPALES
   =========================================== */

:root {
    --primary-color: #1a2a3a;      /* Azul oscuro corporativo */
    --secondary-color: #c9a84c;    /* Dorado elegante */
    --accent-color: #e74c3c;       /* Rojo para CTAs */
    --text-color: #333333;
    --light-gray: #f5f5f5;
    --white: #ffffff;
    --dark-overlay: rgba(26, 42, 58, 0.8);
}

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

body {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===========================================
   HEADER
   =========================================== */

.header {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.top-bar {
    background: var(--primary-color);
    color: var(--white);
    padding: 10px 0;
    font-size: 14px;
}

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

.contact-info span {
    margin-right: 30px;
}

.contact-info i {
    margin-right: 8px;
    color: var(--secondary-color);
}

.social-links a {
    color: var(--white);
    margin-left: 15px;
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--secondary-color);
}

.navbar {
    padding: 15px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo img {
    height: 50px;
    margin-right: 10px;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    list-style: none;
}

.nav-menu li a {
    text-decoration: none;
    color: var(--text-color);
    padding: 10px 20px;
    font-weight: 600;
    transition: color 0.3s;
    position: relative;
}

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

.nav-menu li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 20px;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: width 0.3s;
}

.nav-menu li a:hover::after {
    width: calc(100% - 40px);
}

.btn-primary {
    background: var(--accent-color);
    color: var(--white);
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: background 0.3s;
    display: inline-block;
}

.btn-primary:hover {
    background: #c0392b;
}

/* ===========================================
   HERO SECTION
   =========================================== */

.hero {
    margin-top: 120px;
    position: relative;
}

.hero-slider {
    height: 600px;
    position: relative;
    overflow: hidden;
}

.hero-slider .slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s;
}

.hero-slider .slide.active {
    opacity: 1;
}

.hero-slider .slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--white);
    z-index: 10;
}

.hero-content h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 20px;
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    padding: 12px 30px;
    text-decoration: none;
    border: 2px solid var(--white);
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--primary-color);
}

.hero-stats {
    background: var(--primary-color);
    padding: 40px 0;
    position: relative;
    margin-top: -50px;
    z-index: 10;
}

.hero-stats .container {
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.stat-item {
    text-align: center;
    color: var(--white);
}

.stat-number {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: var(--secondary-color);
}

.stat-label {
    font-size: 14px;
    text-transform: uppercase;
}

/* ===========================================
   SECCIONES GENERALES
   =========================================== */

section {
    padding: 100px 0;
}

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

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--secondary-color);
}

.section-subtitle {
    font-size: 18px;
    color: #666;
}

/* ===========================================
   ABOUT US
   =========================================== */

.about-us {
    background: var(--light-gray);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-content h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.about-content p {
    margin-bottom: 20px;
    color: #666;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.value-item {
    text-align: center;
    padding: 20px;
    background: var(--white);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.value-item:hover {
    transform: translateY(-10px);
}

.value-item i {
    font-size: 40px;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.value-item h4 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: 10px;
}

.experience-badge {
    position: absolute;
    bottom: -30px;
    right: -30px;
    background: var(--secondary-color);
    color: var(--primary-color);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    font-weight: 700;
}

.experience-badge span:first-child {
    display: block;
    font-size: 36px;
}

/* ===========================================
   PROYECTOS
   =========================================== */

.filter-buttons {
    text-align: center;
    margin-bottom: 40px;
}

.filter-btn {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 10px 25px;
    margin: 0 5px;
    cursor: pointer;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s;
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.project-card {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.project-card:hover {
    transform: translateY(-10px);
}

.project-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.project-info {
    padding: 20px;
    background: var(--white);
}

.project-category {
    color: var(--secondary-color);
    font-size: 14px;
    font-weight: 600;
}

.project-info h3 {
    margin: 10px 0;
    color: var(--primary-color);
}

.project-info p {
    color: #666;
    margin-bottom: 15px;
}

.btn-details {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.btn-details:hover {
    color: var(--secondary-color);
}

/* ===========================================
   SERVICIOS
   =========================================== */

.services {
    background: var(--light-gray);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.service-card:hover {
    transform: translateY(-10px);
}

.service-card i {
    font-size: 50px;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.service-card h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.service-card p {
    color: #666;
    margin-bottom: 20px;
}

.service-card ul {
    list-style: none;
    text-align: left;
}

.service-card ul li {
    padding: 8px 0;
    color: #666;
}

.service-card ul li::before {
    content: '✓ ';
    color: var(--secondary-color);
    font-weight: 700;
}

/* ===========================================
   CALIDAD Y CERTIFICACIONES
   =========================================== */

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.cert-item {
    text-align: center;
    padding: 40px 20px;
    background: var(--light-gray);
    border-radius: 10px;
    transition: transform 0.3s;
}

.cert-item:hover {
    transform: scale(1.05);
}

.cert-item img {
    width: 80px;
    margin-bottom: 20px;
}

.cert-item h4 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.cert-item p {
    color: #666;
}

/* ===========================================
   INVERSIONISTAS
   =========================================== */

.investors {
    background: var(--light-gray);
}

.investors-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.investor-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.investor-card:hover {
    transform: translateY(-10px);
}

.investor-card i {
    font-size: 50px;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.investor-card h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.investor-card p {
    color: #666;
    margin-bottom: 25px;
}

/* ===========================================
   CONTACTO
   =========================================== */

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info h2 {
    font-size: 32px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.contact-info > p {
    color: #666;
    margin-bottom: 30px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
}

.info-item i {
    font-size: 24px;
    color: var(--secondary-color);
    margin-right: 15px;
    margin-top: 5px;
}

.info-item h4 {
    margin-bottom: 5px;
    color: var(--primary-color);
}

.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.contact-form h3 {
    margin-bottom: 25px;
    color: var(--primary-color);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
}

.contact-form .btn-primary {
    width: 100%;
    padding: 15px;
    font-size: 16px;
    border: none;
    cursor: pointer;
}

/* ===========================================
   FOOTER
   =========================================== */

.footer {
    background: var(--primary-color);
    color: var(--white);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    margin-bottom: 20px;
    font-size: 18px;
    color: var(--secondary-color);
}

.footer-col p {
    color: #ccc;
    margin-bottom: 20px;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-col ul li a:hover {
    color: var(--secondary-color);
}

.newsletter-form {
    display: flex;
    gap: 10px;
}

.newsletter-form input {
    flex: 1;
    padding: 10px;
    border: none;
    border-radius: 5px;
}

.newsletter-form button {
    padding: 10px 15px;
    background: var(--secondary-color);
    color: var(--primary-color);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.newsletter-form button:hover {
    background: #b8943a;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    margin-left: 20px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--secondary-color);
}

/* ===========================================
   RESPONSIVE
   =========================================== */

@media (max-width: 768px) {
    .nav-menu {
        display: none; /* Aquí iría un menú hamburguesa */
    }
    
    .hero-content h1 {
        font-size: 32px;
    }
    
    .about-grid,
    .contact-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid,
    .services-grid,
    .investors-grid {
        grid-template-columns: 1fr;
    }
    
    .certifications-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .values-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-stats .container {
        flex-wrap: wrap;
        gap: 20px;
    }
    
    section {
        padding: 60px 0;
    }
}