:root {
    /* Clean, Modern, Simple Color Palette (Light Mode by Default) */
    --bg-color: #ffffff;
    --bg-secondary: #f8fafc;
    --text-primary: #0f172a;
    --text-secondary: #64748b;

    /* Branding Colors */
    --primary: #2563eb;
    /* Strong Blue */
    --primary-hover: #1d4ed8;
    --accent: #0f172a;
    /* Dark Slate/Black for heavy accents */

    --card-bg: #ffffff;
    --card-border: #e2e8f0;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --card-shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    --nav-bg: rgba(255, 255, 255, 0.95);
    --nav-border: #e2e8f0;

    --gradient-hero: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    --gradient-text: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--nav-bg);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--nav-border);
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 2px;
}

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

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
}

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

.nav-cta {
    display: inline-block;
}

.menu-toggle {
    display: none;
    cursor: pointer;
}

.menu-toggle .bar {
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    margin: 5px 0;
    transition: 0.3s;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    /* Slightly squarer for 'modern' look */
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.95rem;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    border: 1px solid transparent;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

.store-badge img {
    height: 44px;
    transition: transform 0.2s;
}

.store-badge:hover img {
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    padding-top: 10rem;
    padding-bottom: 6rem;
    background: var(--bg-color);
    position: relative;
}

.hero .container {
    display: flex;
    align-items: center;
    gap: 5rem;
}

.hero-text {
    flex: 1;
}

.hero-text h1 {
    font-size: 3.75rem;
    line-height: 1.1;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    letter-spacing: -1px;
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-text p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 500px;
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.centered-buttons {
    justify-content: center;
}

/* App Mockup - Cleaner Design */
.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    position: relative;
}

.app-mockup {
    width: 320px;
    height: 640px;
    background: #f8fafc;
    border-radius: 48px;
    border: 12px solid #1e293b;
    position: relative;
    box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.25);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.mockup-header {
    padding: 1.25rem 1.5rem;
    background: white;
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.mockup-content {
    flex: 1;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background: #f1f5f9;
}

.chat-bubble {
    padding: 1rem 1.25rem;
    border-radius: 1.25rem;
    max-width: 90%;
    font-size: 0.95rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.chat-bubble.user {
    background: var(--primary);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 0.25rem;
}

.chat-bubble.bot {
    background: white;
    color: var(--text-primary);
    align-self: flex-start;
    border-bottom-left-radius: 0.25rem;
    display: flex;
    gap: 0.75rem;
}

.bot-icon {
    font-size: 1.2rem;
}

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

.small-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: block;
    margin-top: 0.4rem;
}

.chart-preview {
    margin-top: auto;
    background: white;
    padding: 1rem;
    border-radius: 1rem;
    display: flex;
    gap: 0.5rem;
    height: 100px;
    align-items: flex-end;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.bar {
    flex: 1;
    border-radius: 4px;
}

.bar-1 {
    height: 40%;
    background: #93c5fd;
}

.bar-2 {
    height: 75%;
    background: var(--primary);
}

.bar-3 {
    height: 55%;
    background: #3b82f6;
}

.mockup-nav {
    height: 70px;
    background: white;
    display: flex;
    justify-content: space-around;
    align-items: center;
    border-top: 1px solid #e2e8f0;
}

.nav-item {
    width: 24px;
    height: 24px;
    background: #cbd5e1;
    border-radius: 50%;
}

.nav-item.active {
    background: var(--primary);
}

/* Features */
.features {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 4rem;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 1rem;
    border: 1px solid var(--card-border);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
    border-color: #cbd5e1;
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    background: #eff6ff;
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.feature-card p {
    color: var(--text-secondary);
}

/* How It Works */
.how-it-works {
    padding: 6rem 0;
    background: var(--bg-color);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    text-align: left;
    /* Changed to left align for cleaner look */
}

.step {
    position: relative;
}

.step-number {
    font-size: 3rem;
    font-weight: 800;
    color: #e2e8f0;
    line-height: 1;
    margin-bottom: 1rem;
}

.step h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* Testimonials */
.testimonials {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

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

.testimonial-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 1rem;
    border: 1px solid var(--card-border);
    box-shadow: var(--card-shadow);
}

.quote {
    font-size: 1.1rem;
    font-style: normal;
    /* Removed italic for modern look */
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.1rem;
}

.author-info h4 {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
}

.author-info span {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* CTA Section */
.cta-section {
    padding: 6rem 0;
    text-align: center;
    background: var(--bg-color);
    border-top: 1px solid var(--card-border);
    margin-top: 0;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

/* Footer */
footer {
    padding: 4rem 0;
    background: #0f172a;
    color: #94a3b8;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #1e293b;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.footer-links a,
.social-links a {
    color: #94a3b8;
    margin-left: 1.5rem;
    font-size: 0.9rem;
}

.footer-links a:hover,
.social-links a:hover {
    color: white;
}

/* Mobile Responsive */
@media (max-width: 768px) {

    .nav-links,
    .nav-cta {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .hero {
        padding-top: 6rem;
    }

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

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

    .hero-text p {
        margin: 0 auto 2rem;
    }

    .cta-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .steps-grid,
    .testimonial-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-content {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }

    .footer-links {
        display: flex;
        flex-direction: column;
        gap: 1rem;
    }

    .footer-links a {
        margin: 0;
    }
}