/* Variables & Reset */
:root {
    --primary: #111827; /* Deep Charcoal */
    --secondary: #374151; /* Dark Gray */
    --accent: #2563EB; /* Trust Blue */
    --accent-hover: #1d4ed8;
    --bg-white: #ffffff;
    --bg-light: #f9fafb;
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --border: #e5e7eb;
    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --max-width: 1200px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

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

body {
    font-family: var(--font-main);
    color: var(--text-main);
    line-height: 1.6;
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; transition: 0.2s; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

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

.section { padding: 4rem 0; }
.bg-light { background-color: var(--bg-light); }
.text-center { text-align: center; }

/* Typography */
h1, h2, h3, h4 {
    color: var(--primary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 3rem; letter-spacing: -0.02em; }
h2 { font-size: 2.25rem; letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; }
p { margin-bottom: 1rem; color: var(--text-muted); }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-secondary {
    background-color: var(--primary);
    color: white;
}
.btn-secondary:hover { opacity: 0.9; }

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

.btn-white {
    background-color: white;
    color: var(--accent);
}
.btn-white:hover { background-color: #f3f4f6; }

/* Navigation */
.navbar {
    background: white;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--primary);
    letter-spacing: -0.03em;
}
.logo span { color: var(--accent); }

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

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

.nav-links a:hover, .nav-links a.active { color: var(--accent); }

.mobile-menu-btn { display: none; }

/* Hero */
.hero {
    padding: 6rem 0;
    text-align: center;
}
.hero h1 .highlight { color: var(--accent); }
.hero-sub {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 1rem auto 2rem;
}
.cta-group { display: flex; gap: 1rem; justify-content: center; }

/* Grids */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.grid-5 {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

/* Framework Cards */
.card {
    background: white;
    padding: 1.5rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: transform 0.2s;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.step-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--border);
    display: block;
    margin-bottom: 0.5rem;
}

.center-btn { text-align: center; margin-top: 2rem; }

/* Trust Logos */
.logo-grid {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
    opacity: 0.6;
    margin-top: 2rem;
    font-weight: 700;
    color: var(--secondary);
}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.pricing-card {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    background: white;
    position: relative;
    display: flex;
    flex-direction: column;
}

.pricing-card.popular {
    border: 2px solid var(--accent);
    box-shadow: 0 10px 15px -3px rgba(37, 99, 235, 0.1);
}

.badge-pop {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.price { font-size: 2.5rem; font-weight: 800; color: var(--primary); margin: 1rem 0; }
.price .currency { font-size: 1.5rem; vertical-align: top; }
.price .period { font-size: 1rem; color: var(--text-muted); font-weight: 400; }

.plan-features li {
    margin-bottom: 0.75rem;
    position: relative;
    padding-left: 1.5rem;
}
.plan-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}
.full-width { width: 100%; text-align: center; margin-top: auto; }

/* Toggle */
.pricing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}
.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: #ccc;
    transition: .4s;
    border-radius: 34px;
}
.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}
input:checked + .slider { background-color: var(--accent); }
input:checked + .slider:before { transform: translateX(24px); }
.badge { background: #dcfce7; color: #166534; padding: 2px 6px; border-radius: 4px; font-size: 0.75rem; font-weight: 700; }

/* Forms */
.contact-form-wrapper {
    background: white;
    padding: 2rem;
    border: 1px solid var(--border);
    border-radius: 8px;
}
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-weight: 600; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-family: inherit;
}
.cal-mockup { background: var(--bg-light); padding: 2rem; text-align: center; border-radius: 8px; margin-top: 2rem; }

/* Footer */
.footer { background: var(--primary); color: white; padding-top: 4rem; }
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}
.footer h4 { color: white; font-size: 1.1rem; margin-bottom: 1.25rem; }
.footer-links a { display: block; color: #9ca3af; margin-bottom: 0.75rem; }
.footer-links a:hover { color: white; }
.footer-bottom {
    border-top: 1px solid #374151;
    padding: 2rem 0;
    text-align: center;
    color: #9ca3af;
    font-size: 0.9rem;
}

/* CTA Section */
.cta-section { background: var(--accent); color: white; text-align: center; }
.cta-section h2, .cta-section p { color: white; }
.cta-section p { opacity: 0.9; margin-bottom: 2rem; }

/* Framework Page Specific */
.framework-detailed { max-width: 800px; margin: 0 auto; }
.framework-step {
    display: flex;
    gap: 2rem;
    margin-bottom: 4rem;
}
.step-marker {
    font-size: 3rem;
    font-weight: 800;
    color: var(--border);
    line-height: 1;
}
.check-list li::before { content: "•"; color: var(--accent); margin-right: 0.5rem; }

/* Mobile Responsive */
@media (max-width: 768px) {
    h1 { font-size: 2.25rem; }
    .grid-2, .grid-5, .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 2rem;
        border-bottom: 1px solid var(--border);
    }
    .nav-links.active { display: flex; }
    .mobile-menu-btn {
        display: block;
        background: none;
        border: none;
        cursor: pointer;
    }
    .mobile-menu-btn span {
        display: block;
        width: 25px;
        height: 2px;
        background: var(--primary);
        margin: 5px 0;
    }
    .hero { padding: 4rem 0; }
    .cta-group { flex-direction: column; }
    .framework-step { flex-direction: column; gap: 0.5rem; }
}