:root {
    --primary-color: #19983a;
    --primary-hover: #147a2f;
    --accent-color: #ff9800;
    /* Orange for emphasis based on typical kart branding */
    --text-color: #1f2937;
    --text-light: #6b7280;
    --bg-color: #ffffff;
    --bg-secondary: #f3f4f6;
    --white: #ffffff;
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
header {
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--text-color);
    letter-spacing: -0.025em;
    text-decoration: none;
}

.logo img {
    height: 44px;
    width: 44px;
    object-fit: contain;
}

.logo span {
    color: var(--text-color);
    /* Fallback */
}

/* Header Navigation */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-menu a:not(.btn-nav) {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    font-size: 1rem;
    position: relative;
    padding: 0.5rem 0;
    transition: color 0.2s;
}

/* Hover line effect for links */
.nav-menu a:not(.btn-nav)::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
    border-radius: 2px;
}

.nav-menu a:not(.btn-nav):hover {
    color: var(--primary-color);
}

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

.btn-nav {
    background: linear-gradient(135deg, #ff9800, #f57c00);
    /* Orange gradient for high visibility */
    color: white !important;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 4px 12px rgba(255, 152, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-nav:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 8px 16px rgba(255, 152, 0, 0.4);
    background: linear-gradient(135deg, #ffa726, #fb8c00);
}

/* Mobile Nav Styles */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        /* Keep hidden on mobile for now as per previous step */
    }
}

/* Common Section Styles */
section {
    padding: 80px 0;
}

h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-color);
    letter-spacing: -0.025em;
}

section>.container>p.lead-text {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem;
    font-size: 1.25rem;
    color: var(--text-light);
}

/* Hero Section */
.hero {
    padding-top: 160px;
    padding-bottom: 100px;
    background: radial-gradient(circle at top right, rgba(25, 152, 58, 0.05), transparent 40%),
        radial-gradient(circle at bottom left, rgba(255, 152, 0, 0.05), transparent 40%);
    min-height: auto;
    display: flex;
    align-items: center;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 5rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 0.5rem;
    letter-spacing: -0.04em;
}

.brand-list {
    color: var(--primary-color);
}

.brand-kart {
    color: var(--accent-color);
}

.hero-tagline {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.highlight {
    color: var(--primary-color);
    position: relative;
    white-space: nowrap;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 12px;
    background-color: var(--accent-color);
    opacity: 0.2;
    transform: skewX(-10deg);
    z-index: -1;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--text-color);
    color: var(--white);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.btn-primary:hover {
    background-color: #000;
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.play-icon {
    width: 24px;
    height: 24px;
}

.hero-image-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
}

.hero-app-icon {
    width: 100%;
    max-width: 450px;
    object-fit: contain;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.15));
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }

    100% {
        transform: translateY(0px);
    }
}

/* About Section */
.about {
    background-color: var(--white);
}

/* Feature Spotlight & Grid */
.features {
    background-color: var(--white);
}

.feature-spotlight {
    padding: 60px 0;
}

.spotlight-image {
    width: 100%;
    max-width: 400px;
    border-radius: 20px;
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.1);
    display: block;
    margin: 0 auto;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 16px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid rgba(0, 0, 0, 0.03);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.feature-card p {
    color: var(--text-light);
    font-size: 1rem;
}

/* How It Works */
.how-it-works {
    background-color: var(--white);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    text-align: center;
}

.step-item {
    padding: 1rem;
}

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

.step-item h3 {
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

/* Perfect For Section */
.section-alt {
    background-color: #f9fafb;
}

.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.check-list {
    list-style: none;
    margin-top: 1.5rem;
}

.check-list li {
    padding-left: 2rem;
    margin-bottom: 1rem;
    position: relative;
    color: var(--text-color);
    font-weight: 500;
}

.check-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 800;
}

.text-column h2 {
    text-align: left;
    margin-bottom: 1.5rem;
}

/* Support Section */
.support {
    background-color: var(--white);
    text-align: center;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.support h2 {
    margin-bottom: 1rem;
}

.support p {
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 1.125rem;
}

.support-email {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    padding: 1rem 2rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.2s;
}

.support-email:hover {
    border-color: var(--primary-color);
    background-color: #f0fdf4;
}

/* Footer */
footer {
    padding: 2rem 0;
    text-align: center;
    color: var(--text-light);
    font-size: 0.875rem;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    background-color: #fafafa;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }

    .hero {
        padding-top: 100px;
    }

    .text-content h1 {
        font-size: 2.5rem;
    }

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

    .cta-group {
        justify-content: center;
        display: flex;
    }

    .two-column {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .text-column h2 {
        text-align: center;
    }

    .reverse-mobile {
        display: flex;
        flex-direction: column-reverse;
    }

    .spotlight-image {
        max-width: 300px;
    }
}

/* Header Navigation */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

.btn-nav {
    background-color: var(--primary-color);
    color: white !important;
    padding: 0.6rem 1.25rem;
    border-radius: 50px;
    font-size: 0.9rem;
    transition: all 0.2s;
    box-shadow: 0 4px 6px -1px rgba(25, 152, 58, 0.2);
}

.btn-nav:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 8px -1px rgba(25, 152, 58, 0.3);
}

/* Mobile Nav - Simple Hide for now or hamburger if needed */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
}