:root {
    /* Primary Colors */
    --primary: #355070;
    --primary-dark: #2a3f58;
    --secondary: #6D597A;
    
    /* Background Colors */
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    
    /* Text Colors */
    --text-primary: #6D597A;
    --text-secondary: #7f8c8d;
    --text-light: #ffffff;
    
    /* Shadow */
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #B56576, #6D597A);
}

/* Shared Button Styles */
.btn-primary {
    background: var(--primary);
    color: var(--text-light);
    border: none;
    padding: 0.5rem 1.5rem;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    padding: 0.5rem 1.5rem;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--text-light);
}

/* Card Styles */
.card {
    background: var(--bg-white);
    border-radius: 10px;
    box-shadow: var(--box-shadow);
    padding: 2rem;
}

/* Shared card styles */
.plans-grid {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
    max-width: 1400px;
    margin: 0 auto;
}

.plan-card {
    background: var(--bg-white);
    border-radius: 16px;
    padding: 2rem;
    width: 300px;
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease;
    position: relative;
}

.plan-card:hover {
    transform: translateY(-5px);
}

.plan-title {
    color: var(--text-primary);
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.plan-price {
    color: #355070;
    font-size: 2.5rem;
    font-weight: 700;
    margin: 1rem 0;
}

.plan-price span {
    font-size: 1rem;
    color: var(--text-secondary);
}

.plan-features {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
    text-align: left;
}

.plan-features li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
}

.plan-features li::before {
    content: "✓";
    color: #355070;
    margin-right: 10px;
    font-weight: bold;
}

/* From Uiverse.io by Mike11jr */
.buy-btn {
    padding: 1.1em 2em;
    background: none;
    border: 2px solid #fff;
    font-size: 15px;
    color: #131313;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s;
    border-radius: 12px;
    background-color: #ecd448;
    font-weight: bolder;
    box-shadow: 0 2px 0 2px #000;
    width: 100%;
}

.buy-btn:before {
    content: "";
    position: absolute;
    width: 100px;
    height: 120%;
    background-color: #ff6700;
    top: 50%;
    transform: skewX(30deg) translate(-150%, -50%);
    transition: all 0.5s;
}

.buy-btn:hover {
    background-color: #4cc9f0;
    color: #fff;
    box-shadow: 0 2px 0 2px #0d3b66;
}

.buy-btn:hover::before {
    transform: skewX(30deg) translate(150%, -50%);
    transition-delay: 0.1s;
}

.buy-btn:active {
    transform: scale(0.9);
}

.most-popular {
    border: 2px solid #355070;
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: #355070;
    color: var(--text-light);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* Test Cards Grid */
.tests-container {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.tests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    padding: 1rem;
}

.test-card {
    background: var(--bg-white);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: transform 0.3s ease;
}

.test-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.test-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.test-title {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.test-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.test-stats {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.start-btn {
    width: 100%;
    padding: 1rem;
    background: var(--primary);
    color: var(--text-light);
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.start-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.2);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .tests-grid {
        grid-template-columns: 1fr;
        padding: 0.5rem;
    }
    
    .test-card {
        padding: 1.5rem;
    }
}