@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --primary: #10b981;
    --primary-dark: #059669;
    --primary-light: #d1fae5;
    --secondary: #064e3b;
    --accent: #f59e0b;
    --bg-white: #ffffff;
    --bg-soft: #f8fafc;
    --bg-emerald: #ecfdf5;
    --text-dark: #0f172a;
    --text-muted: #475569;
    --text-on-dark: #f8fafc;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius-md: 1.25rem; /* Smoother corners */
    --radius-lg: 2rem;
    --radius-full: 9999px;
    --safe-top: env(safe-area-inset-top);
    --safe-bottom: env(safe-area-inset-bottom);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

html {
    scroll-behavior: smooth;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 800;
    line-height: 1.2;
    color: var(--secondary);
}

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

.section-tag {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background-color: var(--primary-light);
    color: var(--primary-dark);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Layout Utilities */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 100px 0;
}

@media (max-width: 768px) {
    section {
        padding: 60px 0;
    }
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition);
}

nav.scrolled {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    box-shadow: var(--shadow-md);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--secondary);
}

.logo i {
    color: var(--primary);
    font-size: 1.8rem;
}

.nav-links {
    display: flex;
    gap: 3rem;
    align-items: center;
}

.nav-links img {
    height: 40px;
}

.nav-links a {
    text-decoration: none;
    color: var(--secondary);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    position: relative;
}

/* Hover line effect */
.nav-links a:not(.btn)::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary);
    transition: var(--transition);
}

.nav-links a:not(.btn):hover::after, .nav-links a.active:not(.btn)::after {
    width: 100%;
}

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

@media (max-width: 768px) {
    .nav-links {
        display: none; /* Hide default flex display */
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: white;
        flex-direction: column;
        justify-content: center;
        transition: 0.4s cubic-bezier(0.7, 0, 0.3, 1);
        z-index: 1000;
        padding: 4rem 2rem;
        gap: 2rem;
        font-size: 1.25rem;
        box-shadow: -10px 0 30px rgba(0,0,0,0.1);
    }

    .nav-links.active {
        display: flex; /* Show as column when active */
        right: 0;
    }

    .nav-links a {
        width: 100%;
        text-align: center;
        padding: 1rem;
        border-bottom: 1px solid #f1f5f9;
        font-weight: 700;
        color: var(--secondary) !important;
    }
    
    .nav-links a.btn {
        margin-top: 1rem;
        border-bottom: none;
    }
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    gap: 0.5rem;
}

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

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

.btn-outline {
    border: 2px solid var(--primary);
    color: var(--primary);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    z-index: 1001;
    padding: 10px;
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
}

.hamburger span {
    width: 25px;
    height: 2px;
    background-color: var(--secondary);
    border-radius: 3px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

.nav-links.active {
    display: flex !important;
    animation: fadeInDown 0.4s ease forwards;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 140px;
    background-color: var(--bg-soft);
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    top: -10%;
    right: -5%;
    width: 40%;
    height: 60%;
    background: radial-gradient(circle, var(--primary-light) 0%, transparent 70%);
    z-index: 0;
    opacity: 0.5;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 4.5rem;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    max-width: 600px;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-btns {
    display: flex;
    gap: 1.5rem;
    animation: fadeInUp 1s ease 0.4s backwards;
}

.hero-image-wrapper {
    position: relative;
    animation: fadeInRight 1s ease;
}

.main-hero-img {
    width: 100%;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.floating-card {
    position: absolute;
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: float 4s ease-in-out infinite;
}

.floating-card.top {
    top: -20px;
    right: -20px;
}

.floating-card.bottom {
    bottom: 20px;
    left: -40px;
    animation-delay: 2s;
}

/* Stats Section */
.stats {
    padding: 0;
    margin-top: -60px;
    position: relative;
    z-index: 10;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    background: white;
    padding: 3rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

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

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    display: block;
}

.stat-label {
    color: var(--text-muted);
    font-weight: 500;
}


/* Features/Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.service-card {
    background: white;
    padding: 3rem;
    border-radius: var(--radius-md);
    border: 1px solid #f1f5f9;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: var(--bg-emerald);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

/* Sustainability / Impact */
.impact {
    background-color: var(--bg-emerald);
}

.impact .container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 5rem;
    align-items: center;
}

.impact-visual {
    position: relative;
}

.impact-img {
    width: 100%;
    border-radius: var(--radius-md);
}

/* Process Section */
.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    position: relative;
}

.process-step {
    text-align: center;
    position: relative;
}

.step-num {
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    margin: 0 auto 1.5rem;
    position: relative;
    z-index: 2;
}

/* Testimonials */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.testimonial-card {
    background: var(--bg-soft);
    padding: 2.5rem;
    border-radius: var(--radius-md);
    position: relative;
}

.quote-icon {
    font-size: 2rem;
    color: var(--primary-light);
    margin-bottom: 1rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
}

.user-pfp {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid #e2e8f0;
    padding: 1.5rem 0;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 700;
    font-size: 1.125rem;
}

.faq-answer {
    padding-top: 1rem;
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

/* New Section Components */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 0;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 2px;
    background: var(--primary-light);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    right: -10px;
    background-color: white;
    border: 4px solid var(--primary);
    top: 15px;
    border-radius: 50%;
    z-index: 1;
}

.timeline-item.left { left: 0; text-align: right; }
.timeline-item.right { left: 50%; }
.timeline-item.right::after { left: -10px; }

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.pricing-card {
    background: white;
    padding: 3rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid #f1f5f9;
    text-align: center;
    transition: var(--transition);
}

.pricing-card:hover { scale: 1.05; border-color: var(--primary); }

.feature-list {
    list-style: none;
    margin: 2rem 0;
}

.feature-list li {
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

@media (max-width: 768px) {
    .timeline::after { left: 31px; }
    .timeline-item { width: 100%; padding-left: 70px; padding-right: 25px; text-align: left; }
    .timeline-item::after { left: 21px; }
    .timeline-item.left { text-align: left; }
    .pricing-grid { grid-template-columns: 1fr; }
}

/* Footer */
footer {
    background-color: var(--secondary);
    color: white;
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-logo {
    color: white;
    margin-bottom: 1.5rem;
}

.footer-logo i {
    color: var(--primary);
}

.footer-links h4 {
    color: white;
    margin-bottom: 1.5rem;
}

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid #1e293b;
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #64748b;
    font-size: 0.875rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* Mobile Responsive */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-content {
        order: 1;
    }
    .hero-image-wrapper {
        order: 2;
        max-width: 600px;
        margin: 0 auto;
    }
    .hero-btns {
        justify-content: center;
    }
    .hero-content h1 {
        font-size: 3.5rem;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* Mobile Bottom Bar (Native feel) */
.mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: white;
    box-shadow: 0 -4px 10px rgba(0,0,0,0.05);
    padding: 1rem 1.5rem calc(1rem + var(--safe-bottom));
    z-index: 999;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid #f1f5f9;
}

@media (max-width: 768px) {
    .mobile-bottom-nav {
        display: flex;
    }
    
    .mobile-bottom-nav a {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-decoration: none;
        color: var(--text-muted);
        font-size: 0.75rem;
        font-weight: 600;
    }

    .mobile-bottom-nav a i {
        font-size: 1.25rem;
        margin-bottom: 0.25rem;
    }

    .mobile-bottom-nav a.active {
        color: var(--primary);
    }

    section {
        padding: 80px 0;
    }

    body {
        padding-bottom: 80px; /* Space for bottom nav */
    }
}

/* Reveal on Scroll */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}