/* --- Global Styles & Variables --- */
:root {
    --primary-green: #4CAF50; /* Green */
    --primary-white: #FFFFFF; /* White */
    --accent-blue: #00BFFF;   /* Blue for water/sustainability */
    --text-dark: #333333;     /* Dark grey for general text for better readability */
    --text-medium: #555555;   /* Medium grey for paragraphs */
    --text-light: #7D7D7D;    /* Soft grey for subtle text blocks */
    --light-grey-bg: #F8FBF8; /* Very subtle green-tinted light background */
    --border-radius-soft: 12px;
    --shadow-soft: 0 5px 20px rgba(0, 0, 0, 0.07); /* Slightly stronger, diffused shadow */
    --transition-speed: 0.4s ease-in-out; /* Slightly slower for smoother feel */
    --font-family-poppins: 'Poppins', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-poppins);
    line-height: 1.6;
    color: var(--text-dark); /* Ensure body text is dark for visibility */
    background-color: var(--primary-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 25px; /* Slightly more padding on sides */
}

section {
    padding: 100px 0; /* Increased consistent padding for all sections */
    opacity: 0; /* Start hidden for scroll animations */
    transform: translateY(30px); /* Start slightly further below for slide-in */
    transition: opacity 1s ease-out, transform 1s ease-out; /* Slower, smoother transition */
}

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

h1, h2, h3 {
    color: var(--primary-green);
    margin-bottom: 25px;
    font-weight: 600;
    text-align: center;
}

h1 {
    font-size: 3.5em; /* Slightly larger */
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-dark); /* Ensure main heading is very dark */
}

h2 {
    font-size: 2.8em; /* Slightly larger */
    margin-bottom: 40px;
    position: relative; /* For potential decorative elements */
}

h2::after { /* Small underscore for headings */
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary-green);
    margin: 15px auto 0 auto;
    border-radius: 2px;
}

h3 {
    font-size: 1.8em; /* Slightly larger */
}

p {
    color: var(--text-medium); /* Default paragraph color */
    margin-bottom: 15px;
}

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

a:hover {
    color: var(--accent-blue);
}

.cta-button {
    display: inline-block;
    padding: 18px 35px; /* Larger buttons */
    background-color: var(--primary-green);
    color: var(--primary-white);
    border-radius: 50px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px; /* More prominent letter spacing */
    transition: background-color var(--transition-speed), transform var(--transition-speed), box-shadow var(--transition-speed);
    box-shadow: var(--shadow-soft);
    border: none;
    cursor: pointer;
    text-align: center;
}

.cta-button:hover {
    background-color: #388E3C; /* Darker green on hover */
    transform: translateY(-5px); /* More pronounced lift */
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15); /* Stronger hover shadow */
}

.section-description {
    text-align: center;
    max-width: 850px; /* Wider for more descriptive text */
    margin: -15px auto 60px auto;
    font-size: 1.2em; /* Slightly larger */
    line-height: 1.7;
    color: var(--text-light); /* Softer color for descriptions */
}


/* --- Header --- */
.main-header {
    background-color: var(--primary-white);
    padding: 20px 0;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.08); /* Slightly more prominent shadow */
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo-section {
    display: flex;
    align-items: center;
    gap: 15px;
    max-width: 300px;
}

.logo-image {
    height: 60px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    height: 50px;
    width: auto;
    object-fit: contain;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 35px; /* More spacing */
    align-items: center;
}

.main-nav ul li a {
    color: var(--text-medium); /* Ensure text is visible */
    font-weight: 500;
    font-size: 1.1em; /* Slightly larger */
    position: relative;
    padding-bottom: 5px; /* Space for underline */
}

.main-nav ul li a:hover {
    color: var(--primary-green);
}

.main-nav ul li a::after {
    height: 3px; /* Thicker underline */
    background: var(--primary-green);
}

.nav-cta {
    padding: 12px 25px; /* Adjust padding for nav CTA */
    font-size: 0.95em;
}


/* --- Hero Section --- */
.hero-section {
    background: linear-gradient(135deg, var(--primary-white) 50%, rgba(220, 255, 220, 0.6) 100%); /* Softer green tint */
    padding: 120px 0; /* More vertical space */
    display: flex;
    align-items: center;
    min-height: 90vh; /* Take up more viewport height */
    overflow: hidden;
    position: relative; /* For absolute positioning of decorative elements */
}

.hero-section .container {
    display: flex;
    justify-content: center; /* Center content when not enough space for space-between */
    align-items: center;
    gap: 60px; /* More gap */
    flex-wrap: wrap-reverse; /* Image above text on small screens */
}

.hero-content {
    flex: 1;
    min-width: 480px; /* Slightly wider content */
    text-align: left;
    z-index: 2; /* Ensure content is above decorative elements */
}

.hero-content h1 {
    text-align: left;
    margin-bottom: 25px;
    font-size: 4.2em; /* Larger heading */
    color: var(--text-dark);
}

.hero-content p {
    font-size: 1.4em; /* Larger paragraph */
    line-height: 1.8;
    margin-bottom: 45px;
    max-width: 650px;
    color: var(--text-medium);
}

.hero-image-placeholder {
    flex: 1;
    min-width: 400px; /* Wider image placeholder */
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-image-placeholder img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-soft);
    box-shadow: var(--shadow-soft);
    display: block;
    margin: 0 auto;
    filter: brightness(1.08) saturate(1.15); /* More vibrant image */
}

/* Organic shape for hero image - now two layers for more depth */
.hero-image-placeholder::before,
.hero-image-placeholder::after {
    content: '';
    position: absolute;
    z-index: -1;
}

.hero-image-placeholder::before {
    top: -50px;
    left: -50px;
    width: 110%;
    height: 110%;
    background: var(--primary-green);
    border-radius: 65% 35% 45% 55% / 55% 35% 65% 45%; /* Slightly different blob */
    opacity: 0.1;
    animation: blob-float 10s ease-in-out infinite alternate; /* Subtle animation */
}

.hero-image-placeholder::after {
    bottom: -40px;
    right: -40px;
    width: 90%;
    height: 90%;
    background: var(--accent-blue);
    border-radius: 30% 70% 70% 30% / 30% 70% 30% 70%; /* Another blob, blue accent */
    opacity: 0.08;
    animation: blob-float-reverse 12s ease-in-out infinite alternate; /* Subtle animation */
}

@keyframes blob-float {
    0% { transform: translate(0, 0); }
    100% { transform: translate(20px, 10px); }
}

@keyframes blob-float-reverse {
    0% { transform: translate(0, 0); }
    100% { transform: translate(-15px, -10px); }
}

/* --- How It Works Section --- */
.how-it-works-section {
    background-color: var(--light-grey-bg);
    padding: 120px 0 100px 0; /* More top padding, less bottom */
    clip-path: ellipse(120% 80% at 50% 100%); /* Organic bottom edge */
    margin-bottom: -100px; /* Overlap for smooth transition */
    position: relative;
    z-index: 1;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); /* Larger min-width */
    gap: 50px; /* More gap */
    margin-top: 60px;
}

.step-item {
    text-align: center;
    background-color: var(--primary-white);
    padding: 35px; /* More padding */
    border-radius: var(--border-radius-soft);
    box-shadow: var(--shadow-soft);
    transition: transform var(--transition-speed);
}

.step-item:hover {
    transform: translateY(-8px); /* More pronounced lift */
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15); /* Stronger hover shadow */
}

.step-icon {
    font-size: 4em; /* Larger icons */
    margin-bottom: 25px;
    color: var(--accent-blue);
    display: inline-block;
    background-color: rgba(0, 191, 255, 0.12); /* Slightly more opaque blue background */
    border-radius: 50%;
    width: 90px;
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
    margin-right: auto;
    box-shadow: inset 0 0 0 6px rgba(0, 191, 255, 0.08); /* More defined inner shadow */
}

.step-item h3 {
    color: var(--primary-green);
    margin-bottom: 12px;
    font-size: 1.5em; /* Larger heading */
}

.step-item p {
    font-size: 1.05em; /* Slightly larger text */
}

/* --- Environmental Impact Counter Section --- */
.impact-section {
    background: linear-gradient(180deg, var(--light-grey-bg) 0%, var(--primary-white) 100%);
    padding-top: 150px; /* Adjusted padding for overlap */
    clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%); /* Organic top edge */
    margin-top: -100px; /* To align with how-it-works clip-path */
    position: relative;
    z-index: 0;
    padding-bottom: 120px; /* More bottom padding */
}

.impact-counters {
    display: flex;
    justify-content: center;
    gap: 80px; /* More gap between counters */
    margin-top: 60px;
    flex-wrap: wrap;
}

.counter-item {
    text-align: center;
    flex-basis: 280px; /* Base width */
    padding: 35px;
    background-color: var(--primary-white);
    border-radius: var(--border-radius-soft);
    box-shadow: var(--shadow-soft);
    transition: transform var(--transition-speed);
}

.counter-item:hover {
    transform: scale(1.05); /* More pronounced scale */
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15); /* Stronger hover shadow */
}

.counter-value {
    font-size: 4.5em; /* Larger value */
    font-weight: 700;
    color: var(--accent-blue);
    display: block;
    margin-bottom: 15px;
    letter-spacing: -3px; /* Tighter spacing for numbers */
}

.counter-item p {
    font-size: 1.4em; /* Larger label */
    font-weight: 500;
    color: var(--primary-green);
}

.impact-note {
    text-align: center;
    font-size: 1em; /* Slightly larger */
    color: var(--text-light);
    margin-top: 50px;
}

/* --- FAQ Accordion Section --- */
.faq-section {
    background-color: var(--primary-white);
    padding-bottom: 120px; /* More bottom padding */
}

.accordion {
    max-width: 900px; /* Wider accordion */
    margin: 60px auto 0 auto;
    border-top: 1px solid #e0e0e0; /* Lighter border */
    border-left: 1px solid #e0e0e0; /* Left border */
    border-right: 1px solid #e0e0e0; /* Right border */
    border-radius: var(--border-radius-soft);
    overflow: hidden; /* Hide overflow of inner borders */
    box-shadow: var(--shadow-soft);
}

.accordion-item {
    border-bottom: 1px solid #e0e0e0; /* Lighter border */
}

.accordion-item:last-child {
    border-bottom: none; /* No border on last item */
}

.accordion-header {
    background-color: var(--primary-white);
    color: var(--primary-green);
    font-size: 1.3em; /* Larger text */
    font-weight: 600;
    width: 100%;
    text-align: left;
    padding: 25px 30px; /* More padding */
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.accordion-header:hover {
    background-color: var(--light-grey-bg);
    color: var(--accent-blue);
}

.accordion-icon {
    font-size: 1.8em; /* Larger icon */
    margin-left: 20px;
    transition: transform var(--transition-speed);
    color: var(--text-light);
}

.accordion-header.active {
    background-color: var(--primary-green); /* Green background when active */
    color: var(--primary-white); /* White text when active */
}

.accordion-header.active .accordion-icon {
    transform: rotate(45deg);
    color: var(--primary-white); /* White icon when active */
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease-out; /* Slower transition */
    padding: 0 30px; /* Adjust padding for expanded content */
}

.accordion-content p {
    padding: 15px 0 25px 0; /* More bottom padding when content expands */
    color: var(--text-medium);
    font-size: 1.1em; /* Slightly larger text */
    line-height: 1.7;
}

/* --- Testimonials Section --- */
.testimonials-section {
    background-color: var(--light-grey-bg);
    clip-path: ellipse(120% 80% at 50% 0%); /* Organic top edge */
    padding-top: 150px; /* Adjusted padding for clip-path */
    margin-top: -100px; /* Overlap with FAQ section */
    position: relative;
    z-index: 0;
    padding-bottom: 120px;
}

.testimonial-slider {
    display: flex;
    overflow: hidden;
    position: relative;
    max-width: 1000px; /* Wider slider */
    margin: 60px auto;
    border-radius: var(--border-radius-soft);
    box-shadow: var(--shadow-soft);
}

.testimonial-item {
    flex: 0 0 100%;
    text-align: center;
    padding: 50px; /* More padding */
    background-color: var(--primary-white);
    transition: transform var(--transition-speed);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 280px; /* Ensure consistent height */
}

.testimonial-item .quote {
    font-size: 1.6em; /* Larger quote text */
    font-style: italic;
    color: var(--text-dark); /* Darker for better contrast */
    margin-bottom: 30px;
    line-height: 1.6;
    max-width: 800px;
}

.testimonial-item .author {
    font-weight: 600;
    color: var(--primary-green);
    font-size: 1.2em; /* Larger author name */
}

/* --- Contact Form Section --- */
.contact-section {
    background-color: var(--primary-white);
    padding-top: 120px;
}

.contact-form {
    max-width: 650px; /* Wider form */
    margin: 60px auto 0 auto;
    padding: 50px; /* More padding */
    background-color: var(--light-grey-bg);
    border-radius: var(--border-radius-soft);
    box-shadow: var(--shadow-soft);
}

.form-group {
    margin-bottom: 25px; /* More space between groups */
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
    color: var(--text-medium);
    font-size: 1.1em; /* Larger label */
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    width: 100%;
    padding: 16px; /* More padding */
    border: 1px solid #ccc; /* Slightly lighter border */
    border-radius: 8px;
    font-family: var(--font-family-poppins);
    font-size: 1.05em; /* Slightly larger text */
    color: var(--text-dark);
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 4px rgba(76, 175, 80, 0.25); /* More pronounced focus shadow */
}

.form-group textarea {
    resize: vertical;
    min-height: 150px; /* Min height for textarea */
}

.contact-form .cta-button {
    width: 100%;
    padding: 20px 0; /* Larger button */
    font-size: 1.2em;
    margin-top: 30px;
}


/* --- Footer --- */
.main-footer {
    background-color: var(--primary-green);
    color: var(--primary-white);
    padding: 50px 0; /* More padding */
    text-align: center;
}

.main-footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px; /* More gap */
}

.main-footer p {
    margin-bottom: 0;
    color: rgba(255, 255, 255, 0.95); /* Brighter white text */
    font-size: 1.05em;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.85); /* Brighter white links */
    margin: 0 20px;
    font-size: 1em;
}

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

/* --- Responsiveness (Media Queries) --- */
@media (max-width: 992px) {
    h1 {
        font-size: 3.2em;
    }
    h2 {
        font-size: 2.4em;
    }
    .hero-section .container {
        flex-direction: column;
        text-align: center;
        gap: 50px;
    }
    .hero-content {
        min-width: unset;
        text-align: center;
    }
    .hero-content h1 {
        text-align: center;
    }
    .hero-image-placeholder {
        margin-top: 40px;
        min-width: unset;
    }
    .hero-image-placeholder::before,
    .hero-image-placeholder::after {
        display: none; /* Hide complex shapes on smaller screens */
    }
    .main-nav ul {
        gap: 20px;
    }
    .impact-counters {
        flex-direction: column;
        align-items: center;
        gap: 40px;
    }
    .counter-item {
        width: 80%;
        max-width: 450px;
    }
    .how-it-works-section, .impact-section, .testimonials-section {
        clip-path: none; /* Simplify shapes */
        margin-top: 0;
        margin-bottom: 0;
        padding-top: 80px;
        padding-bottom: 80px;
    }
    section {
        padding: 80px 0; /* Adjust general section padding */
    }
}

@media (max-width: 768px) {
    .main-header .container {
        flex-direction: column;
        gap: 20px;
    }
    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px 25px;
    }
    .nav-cta {
        margin-top: 15px;
    }
    h1 {
        font-size: 2.8em;
    }
    h2 {
        font-size: 2.2em;
    }
    h2::after {
        width: 50px;
        height: 3px;
        margin-top: 10px;
    }
    .section-description {
        margin-bottom: 40px;
        font-size: 1.1em;
    }
    .hero-content p {
        font-size: 1.2em;
    }
    .steps-grid {
        grid-template-columns: 1fr;
    }
    .step-icon {
        font-size: 3.5em;
        width: 80px;
        height: 80px;
    }
    .counter-value {
        font-size: 4em;
    }
    .counter-item p {
        font-size: 1.2em;
    }
    .accordion-header {
        font-size: 1.2em;
        padding: 20px 25px;
    }
    .accordion-content p {
        font-size: 1em;
        padding: 10px 25px 20px 25px;
    }
    .testimonial-item .quote {
        font-size: 1.4em;
    }
    .testimonial-item {
        padding: 40px;
    }
    .contact-form {
        padding: 40px;
    }
    .form-group label {
        font-size: 1em;
    }
    .form-group input, .form-group textarea {
        padding: 14px;
    }
    .contact-form .cta-button {
        padding: 18px 0;
        font-size: 1.1em;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    h1 {
        font-size: 2.2em;
    }
    h2 {
        font-size: 1.8em;
    }
    h2::after {
        width: 40px;
        height: 2px;
    }
    .hero-content .cta-button {
        padding: 15px 30px;
        font-size: 0.9em;
    }
    .main-nav ul {
        flex-direction: column;
        gap: 10px;
    }
    .main-nav ul li a {
        font-size: 1em;
    }
    .logo-placeholder {
        font-size: 1.7em;
    }
    .step-item {
        padding: 30px;
    }
    .counter-item {
        padding: 30px;
    }
    .accordion-header {
        font-size: 1.1em;
        padding: 18px 20px;
    }
    .testimonial-item .quote {
        font-size: 1.2em;
    }
    .contact-form {
        padding: 30px;
    }
    .form-group input, .form-group textarea {
        padding: 12px;
    }
    .contact-form .cta-button {
        padding: 16px 0;
        font-size: 1em;
    }
    .main-footer {
        padding: 30px 0;
    }
    .footer-links a {
        margin: 0 10px;
        font-size: 0.9em;
    }
}