:root {
    --bg-color: #ffffff;
    --card-bg: #f8f9fa;
    --primary: #111111;
    --secondary: #666666;
    --text-main: #111111;
    --text-muted: #666666;
    --border-color: #eeeeee;
    --container-width: 1100px;
    --transition-smooth: all 0.3s ease;
    --font-family: 'Outfit', sans-serif;
}

/* Dark Mode Preference (Optional, but let's stick to a clean Light/Dark minimal) */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #0a0a0a;
        --card-bg: #141414;
        --primary: #ffffff;
        --secondary: #888888;
        --text-main: #ffffff;
        --text-muted: #888888;
        --border-color: #222222;
    }
}

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

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Utilities */
.btn-primary {
    background: var(--primary);
    color: var(--bg-color);
    padding: 0.8rem 2rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    transition: var(--transition-smooth);
    border: none;
    font-size: 0.95rem;
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--text-main);
    padding: 0.8rem 2rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    transition: var(--transition-smooth);
    border: 1px solid var(--border-color);
    font-size: 0.95rem;
}

.btn-secondary:hover {
    background: var(--card-bg);
}

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

header.scrolled {
    background: rgba(var(--bg-color), 0.8);
    backdrop-filter: blur(15px);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition-smooth);
}

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

/* Hero Section */
.hero {
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 100px;
}

.hero-content {
    max-width: 700px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    font-weight: 700;
}

.hero p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Sections Overall */
section {
    padding: 80px 0;
}

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

.section-header h2 {
    font-size: 2rem;
    font-weight: 700;
}

/* Pricing Toggle */
.pricing-toggle-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 4px;
    bottom: 4px;
    background-color: var(--bg-color);
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary);
}

input:checked + .slider:before {
    transform: translateX(24px);
}

/* Pricing Grid */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--card-bg);
    padding: 3rem 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.pricing-card.featured {
    border-color: var(--primary);
    transform: scale(1.02);
}

.pricing-header h3 {
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

.price {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
}

.price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-muted);
}

.pricing-features {
    list-style: none;
    margin-bottom: 2.5rem;
    flex-grow: 1;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.pricing-features i {
    color: var(--primary);
    font-size: 0.8rem;
}

/* Footer */
footer {
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-color);
    background: var(--card-bg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 40px;
}

.footer-info p {
    margin-top: 1rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-links h4 {
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

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

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

.footer-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: var(--transition-smooth);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --container-width: 100%;
    }

    .container {
        padding: 0 1.25rem;
    }

    /* Mobile Header & Nav */
    header {
        padding: 1rem 0;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background: var(--card-bg);
        flex-direction: column;
        padding: 6rem 2rem;
        transition: var(--transition-smooth);
        box-shadow: -10px 0 30px rgba(0,0,0,0.1);
        z-index: 999;
        display: flex;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links li {
        width: 100%;
        text-align: center;
    }

    .nav-links a {
        font-size: 1.1rem;
        display: block;
        padding: 1rem;
    }

    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        background: none;
        border: none;
        color: var(--text-main);
        font-size: 1.5rem;
        cursor: pointer;
        z-index: 1001;
    }

    /* Hero Section */
    .hero {
        padding-top: 120px;
        min-height: auto;
        padding-bottom: 60px;
    }

    .hero h1 {
        font-size: 2.25rem;
        margin-bottom: 1rem;
    }

    .hero p {
        font-size: 0.95rem;
        margin-bottom: 2rem;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .hero-cta .btn-primary,
    .hero-cta .btn-secondary {
        width: 100%;
    }

    /* Pricing Section */
    .pricing-grid {
        grid-template-columns: 1fr;
        padding: 0 1rem;
    }

    .pricing-card.featured {
        transform: none;
        order: -1; /* Show Pro plan first on mobile maybe? Or keep sequence. Let's keep sequence. */
    }

    /* Section Spacing */
    section {
        padding: 60px 0;
    }

    .section-header h2 {
        font-size: 1.75rem;
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        text-align: center;
    }

    .footer-info .logo {
        justify-content: center;
    }

    .social-icons {
        justify-content: center;
    }
}

/* Very Small Screens */
@media (max-width: 480px) {
    .price {
        font-size: 2rem;
    }

    .pricing-card {
        padding: 2rem 1.5rem;
    }
}