/* --- Global Styles & Variables --- */
:root {
    --primary-color: #2271b1;
    --secondary-color: #4A5568;
    --background-color: #F7FAFC;
    --text-color: #2D3748;
    --white: #FFFFFF;
    --border-color: #E2E8F0;
}
body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
a { color: var(--primary-color); text-decoration: none; }
h1, h2, h3 { line-height: 1.2; }
h1 { font-size: 3rem; font-weight: 800; }
h2 { font-size: 2.5rem; text-align: center; margin-bottom: 20px; }
section { padding: 80px 0; }

/* --- Buttons --- */
.button { display: inline-block; padding: 12px 24px; border-radius: 8px; font-weight: 700; text-align: center; transition: all 0.3s ease; }
.button-primary { background-color: var(--primary-color); color: var(--white); border: 2px solid var(--primary-color); }
.button-primary:hover { background-color: #1e639b; border-color: #1e639b; }
.button-secondary { background-color: transparent; color: var(--primary-color); border: 2px solid var(--primary-color); }
.button-secondary:hover { background-color: var(--primary-color); color: var(--white); }
.button-download { background-color: #e2e8f0; color: var(--text-color); border: 2px solid #e2e8f0; }
.button-download:hover { background-color: #cbd5e0; }

/* --- Header --- */
.header { background: var(--white); padding: 20px 0; border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 1000; }
.header .container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.5rem; font-weight: 800; }
.header nav a { margin-left: 25px; font-weight: 500; }

/* --- Hero Section --- */
.hero { text-align: center; padding: 100px 0; background: var(--white); }
.hero .subtitle { font-size: 1.25rem; color: var(--secondary-color); max-width: 600px; margin: 20px auto 40px; }
.hero-buttons .button { margin: 0 10px; }

/* --- Features Section --- */
.features .section-intro { text-align: center; max-width: 600px; margin: 0 auto 50px; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.feature-item { background: var(--white); padding: 30px; border-radius: 8px; text-align: center; border: 1px solid var(--border-color); }
.feature-item .icon { font-size: 2.5rem; margin-bottom: 15px; }

/* --- Pricing Section --- */
.pricing { background: var(--white); }
.pricing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; max-width: 800px; margin: 50px auto 0; }
.plan-card { border: 2px solid var(--border-color); border-radius: 12px; padding: 30px; display: flex; flex-direction: column; }
.plan-card.pro { border-color: var(--primary-color); position: relative; }
.pro-badge { position: absolute; top: -15px; left: 50%; transform: translateX(-50%); background: var(--primary-color); color: var(--white); padding: 5px 15px; border-radius: 20px; font-size: 0.8rem; font-weight: 700; }
.plan-card .price { font-size: 2.5rem; font-weight: 800; margin: 10px 0; }
.plan-card .price span { font-size: 1rem; font-weight: 400; color: var(--secondary-color); }
.plan-card ul { list-style: none; padding: 0; margin: 20px 0; flex-grow: 1; }
.plan-card ul li { margin-bottom: 10px; }
.plan-card .button { width: 100%; margin-top: auto; }

/* --- Contact Section --- */
.contact form { max-width: 600px; margin: 40px auto 0; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 5px; font-weight: 500; }
.form-group input, .form-group textarea { width: 100%; padding: 12px; border: 1px solid var(--border-color); border-radius: 8px; font-family: 'Inter', sans-serif; }
#form-status { margin-top: 15px; text-align: center; }

/* --- Footer --- */
.footer { background: #E2E8F0; padding: 30px 0; text-align: center; }
.footer .container { display: flex; justify-content: space-between; align-items: center; }
.footer-links a { margin-left: 20px; }

/* --- Responsive --- */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    .header .container { flex-direction: column; }
    .header nav { margin-top: 15px; }
    .pricing-grid { grid-template-columns: 1fr; }
    .footer .container { flex-direction: column; }
    .footer-links { margin-top: 10px; }
}