:root {
    --primary: #61B881;
    --secondary: #285346;
    --accent: #B8F2C8;
    --dark: #2E2E2E;
    --light: #F4F4F4;
    --alert: #FF6B35;

    --white: #FFFFFF;
    --transition: all 0.3s ease;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary);
}

/* For Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--secondary) var(--light);
}

body {
    background-color: var(--light);
    color: var(--dark);
    line-height: 1.6;
}

li {
    list-style: none;
}

a {
    text-decoration: none;
    color: inherit;
}

/* Layout container */
.container {
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

@media screen and (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
}

/* Header & Navbar */
.header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    height: 60px;
    display: flex;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
}

.logo-img {
    width: 130px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-weight: 500;
    color: var(--dark);
    transition: var(--transition);
}

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

/* Buttons */
.btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--secondary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(97, 184, 129, 0.3);
}

/* Mobile Menu (Hamburger) */
.hamburger {
    display: none;
    cursor: pointer;
    background: none;
    border: none;
}

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

/* Responsive Styles */
@media screen and (max-width: 768px) {
    .hamburger {
        display: block;
    }

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

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

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

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        padding: 40px 0;
        gap: 24px;
    }

    .nav-menu.active {
        left: 0;
    }
}

/* Hero Section */
.hero {
    padding: 50px 0;
    overflow: hidden;
}

.hero-container {
    display: flex;
    align-items: center;
    gap: 60px;
}

.hero-content {
    flex: 1;
    padding-left: 75px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--dark);
    margin-bottom: 24px;
}

.text-primary {
    color: var(--primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #666;
    margin-bottom: 40px;
    max-width: 500px;
}

.btn-hero {
    background-color: var(--primary);
    color: var(--white);
    padding: 16px 40px;
    font-size: 1.1rem;
    border: 2px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
    max-width: 240px;
}

.btn-hero:hover {
    background-color: transparent;
    color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(97, 184, 129, 0.2);
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.mockup-container {
    position: relative;
    width: 100%;
    max-width: 850px;
}

.mockup-img {
    width: 100%;
    height: auto;
    transform: perspective(1000px) rotateY(-10deg) rotateX(5deg);
    transition: var(--transition);
}

.mockup-img:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

/* Hero Section Responsiveness */
@media screen and (max-width: 992px) {
    .hero-title {
        font-size: 2.8rem;
    }
}

@media screen and (max-width: 768px) {
    .hero {
        padding: 60px 0;
    }

    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .mockup-container {
        width: 500px;
    }

    .mockup-img {
        transform: none;
    }

    .mockup-img:hover {
        transform: scale(1.05);
    }
}

/* Pain Point Section */
.pain-point {
    padding: 80px 0;
    background-color: var(--white);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.pain-container {
    flex-direction: column;
    align-items: flex-start;
    max-width: 800px;
    margin: 0 auto;
}

.pain-headline {
    font-size: 2rem;
    color: var(--dark);
    line-height: 1.4;
    margin-bottom: 32px;
    font-weight: 500;
}

.pain-headline strong {
    font-weight: 800;
}

.pain-list {
    margin-bottom: 48px;
    padding-left: 20px;
}

.pain-list li {
    font-size: 1.25rem;
    color: #555;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.pain-list li::before {
    content: "•";
    color: var(--primary);
    font-size: 1.5rem;
    font-weight: bold;
}

.pain-divider {
    width: 100%;
    height: 1px;
    background-color: #ddd;
    margin-bottom: 32px;
}

.pain-footer {
    width: 100%;
    text-align: center;
    font-size: 1.5rem;
    color: #444;
}

.pain-footer strong {
    font-weight: 800;
}

/* Responsiveness for Pain Point */
@media screen and (max-width: 768px) {
    .pain-point {
        padding: 50px 0;
    }

    .pain-headline {
        font-size: 1.5rem;
    }

    .pain-headline strong {
        display: block;
    }

    .pain-list li {
        font-size: 1.1rem;
    }

    .pain-footer {
        font-size: 1.25rem;
    }

    .pain-footer strong {
        display: block;
    }

    .pain-footer strong::first-letter {
        text-transform: uppercase;
    }
}

/* Comparison Section */
.comparison {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--white) 0%, #e8f5ed 100%);
    position: relative;
}

.container-comparison {
    justify-content: center;
}

.comparison-table {
    display: flex;
    width: 100%;
    max-width: 1000px;
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    border: none;
}

.comparison-table:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
}

.comparison-col {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.comparison-col.before {
    border-right: 1px solid #ddd;
}

.comparison-header {
    background: var(--secondary);
    padding: 30px 24px;
    text-align: center;
    border-bottom: none;
}

.comparison-header h3 {
    font-size: 1.4rem;
    color: var(--white);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.comparison-list {
    padding: 32px;
    list-style: none;
}

.comparison-list li {
    font-size: 1.15rem;
    color: #555;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.comparison-list li::before {
    content: "•";
    color: #999;
}

.after .comparison-list li::before {
    color: var(--primary);
}

.after .comparison-header {
    background-color: var(--primary);
}

/* Comparison Responsiveness */
@media screen and (max-width: 768px) {
    .comparison {
        padding: 60px 0;
    }

    .comparison-table {
        flex-direction: column;
    }

    .comparison-col.before {
        border-right: none;
        border-bottom: 1px solid #ddd;
    }

    .comparison-header {
        padding: 16px;
    }

    .comparison-list {
        padding: 24px;
    }
}

/* Features Section */
.features {
    padding: 80px 0;
    background-color: var(--white);
    text-align: center;
}

.features-title {
    font-size: 1.75rem;
    color: var(--dark);
    margin-bottom: 60px;
    font-weight: 700;
}

.container-features {
    flex-direction: column;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    cursor: pointer;
}

.feature-badge {
    width: 140px;
    height: 140px;
    background: var(--white);
    border-radius: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 24px;
    color: var(--primary);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.feature-badge svg {
    width: 64px;
    height: 64px;
    transition: all 0.3s ease;
}

.feature-name {
    font-size: 1.1rem;
    color: var(--dark);
    font-weight: 700;
    line-height: 1.3;
    max-width: 180px;
    transition: color 0.3s ease;
}

/* Hover States */
.feature-item:hover .feature-badge {
    transform: translateY(-12px) rotate(4deg);
    box-shadow: 0 20px 40px rgba(97, 184, 129, 0.15);
    border-color: var(--primary);
    background-color: var(--primary);
    color: var(--white);
}

.feature-item:hover .feature-badge svg {
    transform: scale(1.1);
}

.feature-item:hover .feature-name {
    color: var(--primary);
}

/* Mobile Responsiveness (Dynamic Adaptability) */
@media screen and (max-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px 15px;
    }

    .feature-badge {
        width: 100px;
        height: 100px;
        border-radius: 20px;
    }

    .feature-badge svg {
        width: 48px;
        height: 48px;
    }

    .feature-name {
        font-size: 0.95rem;
    }
}

/* Calculation Info Section */
.calculation-info {
    padding: 80px 0;
    background-color: var(--light);
}

.container-calc {
    justify-content: center;
}

.calc-table {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.calc-table .comparison-header {
    background: var(--primary);
    border-bottom: none;
}

.calc-table .comparison-header h3 {
    color: var(--white);
}

.calc-table .comparison-col:not(:last-child) {
    border-right: 1px solid rgba(0, 0, 0, 0.05);
}

.calc-table .comparison-list li::before {
    color: var(--primary);
}

@media screen and (max-width: 768px) {
    .calculation-info {
        padding: 50px 0;
    }

    .calc-table .comparison-col:not(:last-child) {
        border-right: none;
        border-bottom: 1px solid #ccc;
    }
}

/* Conversion Final Section */
.conversion-final {
    padding: 100px 0;
    background-color: var(--white);
    overflow: hidden;
}

.container-conversion {
    display: flex;
    align-items: center;
    gap: 60px;
}

.conversion-content {
    flex: 1;
    padding-left: 75px;
}

.conversion-title {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
    line-height: 1.2;
}

.conversion-title strong {
    color: var(--primary);
}

.conversion-subtitle {
    font-size: 1.3rem;
    color: #666;
    margin-bottom: 32px;
}

.conversion-list {
    margin-bottom: 40px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.conversion-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--dark);
}

.conversion-cta {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cta-note {
    font-size: 0.9rem;
    color: #888;
}

.conversion-image {
    flex: 1;
    display: flex;
}

.dual-mockup-img {
    width: 100%;
    max-width: 600px;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.1));
}

/* Responsiveness for Conversion Section */
@media screen and (max-width: 992px) {
    .conversion-title {
        font-size: 2.2rem;
    }
}

@media screen and (max-width: 768px) {
    .conversion-final {
        padding: 60px 0;
    }

    .container-conversion {
        flex-direction: column;
        text-align: center;
    }

    .conversion-list li {
        justify-content: center;
        font-size: 1.1rem;
    }

    .conversion-image {
        justify-content: center;
    }

    .dual-mockup-img {
        max-width: 400px;
    }

    .conversion-content {
        padding-left: 0;
    }

    .hero-content {
        padding-left: 0;
    }
}

/* Footer */
.footer {
    background-color: var(--white);
    padding: 60px 0 40px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    text-align: center;
}

.footer-container {
    flex-direction: column;
    gap: 24px;
}

.footer-top {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    width: 100%;
}

.footer-logo-img {
    width: 160px;
}

.footer-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-disabled {
    background-color: #eee;
    color: #999;
    cursor: not-allowed;
    border: 1px solid #ddd;
}

.footer-social {
    display: flex;
    justify-content: center;
}

.social-icon {
    color: var(--secondary);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: -4px;
}

.social-icon:hover {
    color: var(--primary);
    transform: translateY(-3px);
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.copyright {
    font-size: 0.9rem;
    color: #666;
    font-weight: 500;
}

.privacy-note {
    font-size: 0.85rem;
    color: #888;
}

/* Footer Responsiveness */
@media screen and (max-width: 768px) {
    .footer {
        padding: 40px 0 30px;
    }

    .conversion-cta {
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
        justify-content: center;
        display: flex;
    }

    .footer-container {
        gap: 24px;
    }

    .footer-actions {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }

    .footer-actions .btn {
        width: 100%;
    }
}