/* Global Resets and Base Styles */
body {
    margin: 0;
    font-family: 'Arial', sans-serif; /* Placeholder font */
    background-color: #f8fafc; /* Soft light background */
    color: #1f2937; /* Deep gray text */
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

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

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

h1, h2, h3, h4, h5, h6 {
    margin-top: 0;
    margin-bottom: 0.5em;
    font-weight: 600; /* Semi-bold, adjust as needed */
}

/* Header Styles */
header {
    padding: 20px 0;
    background-color: rgba(255, 255, 255, 0.95);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(148, 163, 184, 0.25);
}

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

.logo {
    font-size: 1.8em;
    font-weight: bold;
    color: #2563eb; /* Brand blue */
}

nav ul {
    display: flex;
    gap: 30px; /* Spacing between nav items */
}

nav ul li a {
    font-size: 1em;
    color: #475569; /* Slate gray */
    transition: color 0.3s ease;
}

nav ul li a:hover,
nav ul li a.active {
    color: #2563eb; /* Brand blue on hover */
}

.btn {
    padding: 10px 25px;
    border-radius: 25px; /* More rounded buttons based on images */
    font-weight: bold;
    transition: all 0.3s ease;
    cursor: pointer;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background-color: #2563eb;
    color: #ffffff;
    border: none;
}

.btn-primary:hover {
    background-color: #1d4ed8;
}

.btn-outline { /* For Sign In button */
    background-color: transparent;
    color: #2563eb;
    border: 2px solid #2563eb;
}

.btn-outline:hover {
    background-color: #2563eb;
    color: #ffffff;
}

/* Hero Section */
.hero-section {
    padding: 80px 0;
    text-align: center;
    background: linear-gradient(180deg, #ffffff 0%, #e0e7ff 100%);
    overflow: hidden; /* To contain floating elements */
    position: relative; /* For background stars/elements */
}

/* Add decorative stars/sparkles as in the image */
.hero-section::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-image: radial-gradient(circle, rgba(255,255,255,0.2) 1px, transparent 1px);
    background-size: 30px 30px;
    opacity: 0.3;
    pointer-events: none;
}

.hero-content h1 {
    font-size: 3.5em;
    font-weight: bold;
    margin-bottom: 0.3em;
    line-height: 1.2;
    color: #0f172a;
}

.hero-content .tagline {
    font-size: 2.2em;
    color: #2563eb;
    margin-bottom: 0.5em;
    font-weight: 500;
}

.hero-content .sub-tagline {
    font-size: 1.5em;
    color: #1d4ed8;
    margin-bottom: 1.5em;
}

.hero-content p {
    font-size: 1.1em;
    color: #475569;
    max-width: 700px;
    margin: 0 auto 30px auto;
}

.hero-image-container {
    margin-top: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    position: relative;
}

.hero-image-container img {
    max-width: 45%;
}

/* Key AI Features Section */
.features-section {
    padding: 60px 0;
    background-color: #f1f5f9;
}

.section-heading {
    text-align: center;
    margin-bottom: 50px;
}

.section-heading h2 {
    font-size: 2.5em;
    font-weight: bold;
    margin-bottom: 0.5em;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    text-align: center;
}

.feature-item {
    background-color: #ffffff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
    border: 1px solid rgba(148, 163, 184, 0.25);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 16px 32px rgba(15, 23, 42, 0.12);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px auto;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgba(37, 99, 235, 0.1);
    border-radius: 50%;
    padding: 15px;
}

.feature-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.feature-item h3 {
    font-size: 1.4em;
    margin-bottom: 10px;
    color: #0f172a;
}

.feature-item p {
    font-size: 0.95em;
    color: #475569;
}

/* Feature Highlight Section */
.feature-highlight {
    background-color: #ffffff;
    border-radius: 12px;
    padding: 30px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 30px;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.1);
    border: 1px solid rgba(148, 163, 184, 0.2);
}

.feature-highlight-content {
    flex: 1;
    min-width: 300px;
}

.feature-highlight-image {
    flex: 1;
    min-width: 300px;
    text-align: center;
}

.feature-highlight-image img {
    max-width: 100%;
    margin: 0 auto;
}

/* Performance Section */
.performance-section {
    padding: 60px 0;
    background-color: #ffffff;
}

.performance-stats {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
    padding: 24px;
    background-color: #ffffff;
    border-radius: 12px;
    min-width: 200px;
    border: 1px solid rgba(148, 163, 184, 0.25);
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}

.stat-value {
    font-size: 2.5em;
    font-weight: bold;
    color: #2563eb;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 1.2em;
    color: #475569;
}

/* CTA Section */
.cta-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    text-align: center;
    color: #ffffff;
}

.cta-section h2 {
    font-size: 2.2em;
    margin-bottom: 15px;
}

.cta-section p {
    font-size: 1.1em;
    margin-bottom: 30px;
    color: rgba(248, 250, 252, 0.9);
}

#early-access-form {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    max-width: 600px;
    margin: 0 auto;
}

#early-access-form input {
    padding: 12px 20px;
    border-radius: 25px;
    border: 1px solid rgba(226, 232, 240, 0.9);
    min-width: 300px;
    font-size: 1em;
    background-color: rgba(255, 255, 255, 0.95);
}

#early-access-form button {
    padding: 12px 25px;
}

/* Footer */
footer {
    background-color: #f1f5f9;
    padding: 40px 0 20px 0;
    color: #475569;
    font-size: 0.9em;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.3);
    padding-bottom: 20px;
    margin-bottom: 20px;
}

.footer-logo {
    font-size: 1.5em;
    font-weight: bold;
    color: #2563eb;
}

.footer-nav ul {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-nav ul li a:hover {
    color: #2563eb;
}

.social-icons ul {
    display: flex;
    gap: 15px;
}

.social-icons ul li a {
    font-size: 1.2em;
    color: #475569;
}
.social-icons ul li a:hover {
    color: #2563eb;
}

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

/* Mobile Menu (Basic - Placeholder) */
.mobile-menu-toggle {
    display: none; /* Hidden on desktop */
    background: none;
    border: none;
    color: white;
    font-size: 1.5em;
    cursor: pointer;
}

@media (max-width: 768px) {
    header .container {
        flex-wrap: wrap;
    }
    nav ul {
        display: none; /* Hide desktop nav */
        flex-direction: column;
        width: 100%;
        background-color: rgba(226, 232, 240, 0.95);
        position: absolute;
        top: 70px; /* Adjust based on header height */
        left: 0;
        padding: 10px 0;
    }
    nav ul.active {
        display: flex;
    }
    nav ul li {
        text-align: center;
        padding: 10px 0;
    }
    .mobile-menu-toggle {
        display: block;
    }

    .hero-content h1 {
        font-size: 2.5em;
    }
    .hero-content .tagline {
        font-size: 1.8em;
    }
    .hero-content .sub-tagline {
        font-size: 1.2em;
    }
    .hero-image-container {
        flex-direction: column;
    }
    .hero-image-container img {
        max-width: 80%;
        margin: 0 auto;
    }

    .feature-grid {
        grid-template-columns: 1fr; /* Single column on mobile */
    }
     .footer-content {
        flex-direction: column;
        text-align:center;
    }
    .footer-nav ul {
         flex-direction: column;
         gap:10px;
         margin-top:10px;
         margin-bottom:10px
    }
    
    #early-access-form input,
    #early-access-form button {
        width: 100%;
        margin: 5px 0;
    }
}

/* Animations */
.animate-fade-in {
    opacity: 0;
    animation: fadeIn 0.8s forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

/* Stars background effect */
.stars {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.star {
    position: absolute;
    width: 2px;
    height: 2px;
    background-color: white;
    border-radius: 50%;
    opacity: 0.5;
}