:root {
    --primary-color: #0052cc;
    --secondary-color: #172b4d;
    --accent-color: #00b8d9;
    --bg-light: #f4f5f7;
    --text-color: #333;
    --white: #ffffff;
}

body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background-color: var(--white);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

nav a {
    text-decoration: none;
    color: var(--secondary-color);
    margin-left: 2rem;
    font-weight: 500;
}

.btn-login {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.btn-login:hover {
    background-color: #003d99;
}

/* Hero */
.hero {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    color: var(--white);
    padding: 5rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.btn-cta {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--secondary-color);
    padding: 1rem 2rem;
    text-decoration: none;
    font-weight: 700;
    border-radius: 4px;
    font-size: 1.1rem;
    transition: transform 0.2s;
}

.btn-cta:hover {
    transform: translateY(-2px);
}

/* Features */
.features {
    padding: 4rem 0;
    background-color: var(--white);
}

.features h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--secondary-color);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
    border-radius: 8px;
    background-color: var(--bg-light);
    text-align: center;
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

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

.price-card {
    background-color: var(--white);
    padding: 3rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    max-width: 400px;
    margin: 0 auto;
}

.price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.sub-price {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 1rem;
}

.price-features {
    list-style: none;
    padding: 0;
    margin: 2rem 0;
    text-align: left;
}

.price-features li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.price-features li::before {
    content: "✓";
    color: green;
    position: absolute;
    left: 0;
}

/* Footer */
footer {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 2rem 0;
    text-align: center;
}