:root {
    --primary-color: #1a2a3a;
    --secondary-color: #4a89dc;
    --accent-color: #e74c3c;
    --light-color: #f5f7fa;
    --dark-color: #1a2a3a;
    --success-color: #2ecc71;
    --gradient-start: #4a89dc;
    --gradient-end: #3bafda;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    padding: 3rem 0;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

nav {
    background-color: var(--dark-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav ul {
    display: flex;
    list-style: none;
    padding: 1rem 0;
}

nav li {
    margin-right: 1.5rem;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: var(--secondary-color);
}

.right {
    margin-left: auto;
}

main {
    padding: 2rem 0;
}

section {
    margin-bottom: 3rem;
    padding: 2rem 0;
}

h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.cta {
    background-color: var(--light-color);
    padding: 2rem;
    border-radius: 8px;
    margin: 2rem 0;
    text-align: center;
}

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

.plan {
    background: white;
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all 0.3s ease;
    border-top: 4px solid var(--secondary-color);
    position: relative;
    overflow: hidden;
}

.plan:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

.plan::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
}

.price {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--accent-color);
    margin: 1rem 0;
}

form {
    display: grid;
    gap: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

input, select, button {
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

button {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    border: none;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
    padding: 1rem 2rem;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(74, 137, 220, 0.3);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 137, 220, 0.4);
    background: linear-gradient(135deg, var(--gradient-end), var(--gradient-start));
}

/* Loading spinner */
.spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
    margin-right: 0.5rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Animation classes */
.animate {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* Form input focus effects */
input:focus, select:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 2px rgba(74, 137, 220, 0.2);
    transition: all 0.3s ease;
}

.contact-info {
    background-color: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

footer {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: rgba(255,255,255,0.2);
}

@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
    }

    nav li {
        margin: 0.5rem 0;
    }

    .right {
        margin-left: 0;
    }

    .plans-container {
        grid-template-columns: 1fr;
    }
}