:root {
    --primary-green: #2e7d32;
    --primary-green-dark: #1b5e20;
    --primary-green-light: #4caf50;
    --secondary-green: #a5d6a7;
    --accent-green: #81c784;
    --white-color: #ffffff;
    --light-gray: #f5f5f5;
    --dark-text: #263238;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

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

h1, h2, h3, h4 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1.25rem;
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn-basura-cero {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    background-color: var(--primary-green);
    color: var(--white-color);
    font-size: 18px;
    margin-top: 20px;
}

.btn-basura-cero:hover {
    background-color: var(--primary-green-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(46, 125, 50, 0.2);
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.divider {
    width: 80px;
    height: 4px;
    background-color: var(--primary-green);
    margin: 20px auto;
    border-radius: 2px;
}

/* Header */
.basura-cero-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: var(--white-color);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

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

.logo {
    display: flex;
    align-items: center;
}

.logo-icon {
    font-size: 28px;
    color: var(--primary-green);
    margin-right: 10px;
}

.logo h1, .logo h3 {
    font-size: 24px;
    margin: 0;
}

.logo h1 span, .logo h3 span {
    color: var(--primary-green);
    font-weight: 600;
}

nav ul {
    display: flex;
    align-items: center;
    gap: 30px;
}

nav a {
    font-weight: 500;
    position: relative;
}

nav a:after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background: var(--primary-green);
    bottom: -5px;
    left: 0;
    transition: var(--transition);
}

nav a:hover:after {
    width: 100%;
}

/* Hero Banner */
.basura-cero-hero {
    height: 100vh;
    min-height: 600px;
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('img/basura-cero-bg.jpg') no-repeat center center/cover;
    display: flex;
    align-items: center;
    color: var(--white-color);
    margin-top: 80px;
}

.hero-overlay {
    width: 100%;
}

.hero-content {
    max-width: 800px;
    text-align: center;
    margin: 0 auto;
}

.hero-content h2 {
    font-size: 36px;
    margin-bottom: 20px;
    line-height: 1.2;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.hero-content h1 {
    font-size: 72px;
    margin: 20px 0;
    text-transform: uppercase;
}

.hero-content h1 span {
    color: var(--primary-green-light);
}

/* Sections */
.basura-cero-section {
    padding: 80px 0;
    background-color: var(--white-color);
}

.basura-cero-section.alt-bg {
    background-color: var(--light-gray);
}

.section-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: var(--white-color);
    border-radius: 10px;
    padding: 30px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    text-align: center;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.service-icon {
    width: 70px;
    height: 70px;
    background-color: rgba(46, 125, 50, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--primary-green);
    font-size: 30px;
}

/* Methodology Steps */
.methodology-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    text-align: center;
}

.step {
    position: relative;
    padding: 30px 20px;
    background-color: var(--white-color);
    border-radius: 10px;
    box-shadow: var(--box-shadow);
}

.step-number {
    width: 50px;
    height: 50px;
    background-color: var(--primary-green);
    color: var(--white-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    margin: 0 auto 20px;
}

/* Benefits Grid */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.benefit-card {
    background-color: var(--white-color);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition);
}

.benefit-card:hover {
    transform: translateY(-5px);
}

.benefit-card i {
    font-size: 40px;
    color: var(--primary-green);
    margin-bottom: 20px;
}

/* Contact Section */
.basura-cero-contact {
    padding: 80px 0;
    background-color: var(--primary-green);
    color: var(--white-color);
    text-align: center;
}

.basura-cero-contact h2 {
    font-size: 36px;
    margin-bottom: 30px;
}

/* Footer */
.basura-cero-footer {
    background-color: var(--primary-green-dark);
    color: var(--white-color);
    padding: 60px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.footer-logo .logo h3 {
    color: var(--white-color);
}

.footer-logo .logo span {
    color: var(--secondary-green);
}

.footer-logo p {
    opacity: 0.8;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 18px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h4:after,
.footer-contact h4:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--secondary-green);
}

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

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

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.footer-contact i {
    width: 20px;
    text-align: center;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero-content h1 {
        font-size: 60px;
    }
}

@media (max-width: 768px) {
    .hero-content h2 {
        font-size: 28px;
    }
    
    .hero-content h1 {
        font-size: 48px;
    }
    
    nav ul {
        gap: 15px;
    }
}

@media (max-width: 576px) {
    .section {
        padding: 60px 0;
    }
    
    .hero-content h1 {
        font-size: 36px;
    }
    
    .hero-content h2 {
        font-size: 24px;
    }
    
    .basura-cero-header .container {
        flex-direction: column;
        height: auto;
        padding: 15px 0;
    }
    
    .logo {
        margin-bottom: 15px;
    }
}