/* ==========================================================================
   CSS Variables
   ========================================================================== */
   :root {
    /* Colors */
    --color-primary: #1B4332; /* Deep Forest Green */
    --color-secondary: #2D6A4F; /* Soft Emerald Green */
    --color-accent: #84CC16; /* Vibrant Lime Green */
    --color-accent-hover: #65A30D;
    
    --color-bg: #F8FAFC; /* Bone white / light gray */
    --color-surface: #FFFFFF;
    
    --color-text: #1E293B;
    --color-text-light: #64748B;
    --color-text-inverse: #FFFFFF;
    
    /* Typography */
    --font-heading: 'Lexend', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Borders & Shadows */
    --border-radius-sm: 6px;
    --border-radius-md: 12px;
    --border-radius-lg: 24px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-light);
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.bg-light {
    background-color: #F1F5F9;
}

/* ==========================================================================
   Typography Utilities
   ========================================================================== */
.text-accent {
    color: var(--color-accent);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title h2 {
    font-size: 2.5rem;
    position: relative;
    display: inline-block;
    padding-bottom: var(--spacing-xs);
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--color-accent);
    border-radius: 2px;
}

.section-title p {
    font-size: 1.125rem;
    max-width: 600px;
    margin: var(--spacing-sm) auto 0;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-heading);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
    font-size: 1rem;
}

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

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

.btn-outline {
    background-color: transparent;
    color: var(--color-text-inverse);
    border-color: var(--color-text-inverse);
}

.btn-outline:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all var(--transition-normal);
    padding: var(--spacing-sm) 0;
    background-color: transparent;
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    padding: 0.5rem 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-inverse);
}

.logo-icon {
    color: var(--color-accent);
}

.header.scrolled .logo {
    color: var(--color-primary);
}

.nav {
    display: none; /* Mobile first, hidden by default */
}

.nav.active {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--color-surface);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-md);
}

.nav-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.nav-link {
    font-weight: 500;
    color: var(--color-text-inverse);
    padding: 0.5rem 1rem;
    display: block;
    border-radius: var(--border-radius-sm);
}

.header.scrolled .nav-link {
    color: var(--color-text);
}

.nav-link:hover {
    color: var(--color-accent);
}

.header.scrolled .nav-link:hover {
    color: var(--color-primary);
    background-color: rgba(132, 204, 22, 0.1);
}

.btn-nav {
    background-color: var(--color-accent);
    color: var(--color-primary) !important;
    text-align: center;
}

.btn-nav:hover {
    background-color: var(--color-accent-hover);
}

.menu-toggle {
    background: none;
    border: none;
    color: var(--color-text-inverse);
    cursor: pointer;
    display: block;
}

.header.scrolled .menu-toggle {
    color: var(--color-primary);
}

@media (min-width: 768px) {
    .menu-toggle {
        display: none;
    }
    
    .nav {
        display: block !important;
        position: static;
        background: transparent;
        box-shadow: none;
        padding: 0;
    }
    
    .nav-list {
        flex-direction: row;
        align-items: center;
    }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background-image: url('https://images.unsplash.com/photo-1621905251189-08b45d6a269e?q=80&w=2069&auto=format&fit=crop'); /* Placeholder image of electricity/modern tech */
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--color-text-inverse);
    padding-top: var(--spacing-xl);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(27, 67, 50, 0.9), rgba(45, 106, 79, 0.7));
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero h1 {
    font-size: 3rem;
    color: var(--color-text-inverse);
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

@media (min-width: 768px) {
    .hero h1 {
        font-size: 4.5rem;
    }
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.card {
    background-color: var(--color-surface);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    border: 1px solid rgba(0,0,0,0.05);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    width: 60px;
    height: 60px;
    background-color: rgba(132, 204, 22, 0.1);
    color: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

.card-icon svg {
    width: 32px;
    height: 32px;
}

/* ==========================================================================
   Services / Video Section
   ========================================================================== */
.video-wrapper {
    max-width: 900px;
    margin: 0 auto;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background-color: var(--color-primary);
    padding: 10px; /* Borde elegante */
}

.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    border-radius: var(--border-radius-sm);
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr 1.5fr;
    }
}

.info-list {
    margin-top: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.info-icon {
    background-color: rgba(45, 106, 79, 0.1);
    color: var(--color-secondary);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-item h4 {
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

.info-item a, .info-item span {
    color: var(--color-text-light);
    transition: color var(--transition-fast);
}

.info-item a:hover {
    color: var(--color-accent);
}

.contact-form-container {
    background-color: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
}

@media (min-width: 768px) {
    .contact-form-container {
        padding: var(--spacing-lg);
    }
}

.form-group {
    margin-bottom: var(--spacing-sm);
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #CBD5E1;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    background-color: #F8FAFC;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.2);
    background-color: var(--color-surface);
}

.form-status {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: var(--border-radius-sm);
    display: none;
    text-align: center;
    font-weight: 500;
}

.form-status.success {
    display: block;
    background-color: rgba(132, 204, 22, 0.1);
    color: var(--color-primary);
    border: 1px solid var(--color-accent);
}

.form-status.error {
    display: block;
    background-color: rgba(239, 68, 68, 0.1);
    color: #B91C1C;
    border: 1px solid #EF4444;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
    padding-top: var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

.footer-logo {
    color: var(--color-text-inverse) !important;
    margin-bottom: var(--spacing-sm);
}

.footer p {
    color: rgba(255, 255, 255, 0.7);
}

.footer h4 {
    color: var(--color-text-inverse);
    margin-bottom: var(--spacing-sm);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

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

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

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--color-text-inverse);
}

.social-icons a:hover {
    background-color: var(--color-accent);
    color: var(--color-primary);
    transform: translateY(-3px);
}

.footer-bottom {
    background-color: rgba(0, 0, 0, 0.2);
    padding: var(--spacing-sm) 0;
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    font-size: 0.875rem;
}

/* ==========================================================================
   Floating WhatsApp Button
   ========================================================================== */
.whatsapp-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background-color: #25D366; /* WhatsApp Official Color */
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    z-index: 100;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.whatsapp-btn:hover {
    transform: scale(1.1) translateY(-5px);
    box-shadow: 0 15px 20px -5px rgba(37, 211, 102, 0.4);
    color: white;
}

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

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

.delay-1 {
    transition-delay: 0.2s;
}

.delay-2 {
    transition-delay: 0.4s;
}