/* Base & Reset */
:root {
    --primary-color: #00875a; /* Deep Eco Green */
    --primary-light: #00b37e;
    --primary-dark: #004d40;
    --secondary-color: #0d47a1; /* Water Blue */
    --bg-light: #f4f7f6;
    --bg-dark: #121212;
    --text-main: #333333;
    --text-muted: #666666;
    --text-light: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 255, 255, 0.3);
    --transition: all 0.3s ease;
    --border-radius: 12px;
}

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

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

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

ul {
    list-style: none;
}

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

.section {
    padding: 80px 0;
}

.section-title {
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--primary-dark);
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

.text-center {
    text-align: center;
}

.text-center h2::after {
    left: 50%;
    transform: translateX(-50%);
}

.bg-light { background-color: var(--bg-light); }
.bg-dark { background-color: var(--bg-dark); }
.light-text, .light-text h2 { color: var(--text-light); }

.w-100 { width: 100%; }

.hidden { display: none !important; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 30px;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    text-align: center;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    box-shadow: 0 4px 15px rgba(0, 135, 90, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 135, 90, 0.4);
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
    box-shadow: 0 4px 15px rgba(13, 71, 161, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    background: #1565c0;
    box-shadow: 0 6px 20px rgba(13, 71, 161, 0.4);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo-img {
    height: 45px;
    object-fit: contain;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    color: var(--primary-dark);
}

.nav-links a:hover {
    color: var(--primary-color);
}

.lang-switcher {
    display: flex;
    gap: 10px;
}

.lang-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease, opacity 0.2s ease;
    opacity: 0.6;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lang-btn img {
    width: 24px;
    height: 18px;
    border-radius: 2px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
    object-fit: cover;
}

.lang-btn:hover {
    transform: scale(1.2);
    opacity: 0.9;
}

.lang-btn.active {
    opacity: 1;
    transform: scale(1.1);
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.hamburger {
    display: none;
    cursor: pointer;
}

.hamburger .bar {
    width: 25px;
    height: 3px;
    background-color: var(--primary-dark);
    margin: 5px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 600px;
    background: url('../logoecoarla32.png') no-repeat center center;
    background-size: cover; /* Wait, logo as background isn't good. Let's use a CSS gradient as placeholder */
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    padding-top: 80px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1;
}

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

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

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

.about-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    text-align: center;
    transition: var(--transition);
    border: 1px solid #f0f0f0;
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
    border-color: var(--primary-light);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

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

.about-card p {
    color: var(--text-muted);
}

/* Quality Section */
.content-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.split-text p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: var(--text-muted);
}

.feature-list {
    margin-top: 30px;
}

.feature-item {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    font-size: 1.1rem;
    font-weight: 600;
}

.feature-item .check {
    color: var(--primary-color);
    margin-right: 15px;
    font-size: 1.2rem;
}

.glass-card {
    background: linear-gradient(135deg, rgba(255,255,255,0.4), rgba(255,255,255,0.1));
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.5);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.glass-card h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--primary-dark);
}

/* Simulator Section */
.calc-container {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: 0 15px 50px rgba(0,0,0,0.08);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--primary-dark);
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 135, 90, 0.1);
}

.help-text {
    display: block;
    margin-top: 5px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.calc-result {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid #eee;
    animation: fadeIn 0.5s ease;
}

.calc-result h3 {
    margin-bottom: 20px;
    text-align: center;
    color: var(--secondary-color);
}

.result-row {
    display: flex;
    justify-content: space-between;
    padding: 15px;
    background: var(--bg-light);
    border-radius: 8px;
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.result-row strong {
    color: var(--primary-dark);
    font-family: 'Outfit', sans-serif;
    font-size: 1.2rem;
}

.result-note {
    font-size: 0.8rem;
    color: #888;
    text-align: center;
    margin-top: 15px;
}

/* Contact Section */
.contact-form-wrapper {
    max-width: 700px;
    margin: 0 auto;
    background: var(--glass-bg);
    padding: 40px;
    border-radius: var(--border-radius);
}

.contact .form-group label {
    color: var(--text-main);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-status {
    margin-top: 15px;
    text-align: center;
    font-weight: 600;
    padding: 10px;
    border-radius: 8px;
}

.status-success {
    background-color: #d4edda;
    color: #155724;
}

.status-error {
    background-color: #f8d7da;
    color: #721c24;
}

/* Footer */
.footer {
    background: #0a0a0a;
    color: #888;
    padding: 40px 0;
    text-align: center;
}

.footer-logo img {
    height: 40px;
    opacity: 0.5;
    margin-bottom: 20px;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeIn 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }

/* Responsive */
@media (max-width: 992px) {
    .content-split {
        grid-template-columns: 1fr;
    }
    .hero h1 {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 20px 0;
        text-align: center;
        box-shadow: 0 10px 10px rgba(0,0,0,0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: block;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
}