.container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 1.25rem;
    animation: fadeIn 0.8s ease-out;
}

/* Calculator Grid */
.calculator-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5625rem;
    margin-bottom: 2.5rem;
    width: 100%;
}

.calculator-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0; /* Removed padding to accommodate image */
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 5px 15px var(--shadow-color);
    overflow: hidden; /* Ensure images don't overflow */
    position: relative; /* For positioning the hero images */
}

.calculator-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px var(--shadow-color);
    border-color: var(--highlight-color);
}

/* Hero image styles */
.card-image {
    width: 100%;
    height: 120px; /* Reduced from 180px */
    overflow: hidden;
    position: relative;
    background: linear-gradient(to bottom, rgba(15, 52, 96, 0.7), rgba(26, 26, 46, 0.95));
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0.5rem;
}

.hero-image {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    transition: transform 0.5s ease;
}

.calculator-card:hover .hero-image {
    transform: scale(1.1);
}

.card-content {
    padding: 1.25rem;
    text-align: center;
    width: 100%;
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    text-shadow: 0 0 5px var(--highlight-color);
    transition: transform 0.3s ease;
}

.calculator-card h3 {
    margin: 0.625rem 0;
    font-size: 1.3rem;
    color: var(--highlight-color);
}

.calculator-card p {
    color: #a0a0b8;
    font-size: 0.9rem;
    line-height: 1.4;
}

/* Welcome Box */
.welcome-box {
    background: var(--card-bg);
    border-radius: 10px;
    padding: 1.5625rem;
    margin-bottom: 2.5rem;
    box-shadow: 0 5px 15px var(--shadow-color);
    border: 1px solid var(--border-color);
    animation: fadeIn 0.9s ease-out;
    text-align: center;
}

.welcome-box h2 {
    color: var(--highlight-color);
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.5rem;
    text-align: center;
}

.welcome-box p {
    color: var(--text-color);
    margin-bottom: 1rem;
    line-height: 1.6;
    text-align: center;
}

.welcome-box p:last-child {
    margin-bottom: 0;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(76, 175, 80, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(76, 175, 80, 0); }
    100% { box-shadow: 0 0 0 0 rgba(76, 175, 80, 0); }
}

/* Responsive adjustments - Tablet */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .calculator-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: 1rem;
    }
    

    .page-title {
        font-size: 1.8rem;
    }
}

/* Responsive adjustments - Mobile Phone */
@media (max-width: 576px) {
    .container {
        padding: 0.75rem;
    }
    
    .calculator-grid {
        grid-template-columns: 1fr;
        gap: 0.875rem;
    }
    
    .calculator-card h3 {
        font-size: 1.1rem;
    }

    .calculator-card p {
        font-size: 0.85rem;
    }
    
    
    .page-title {
        font-size: 1.5rem;
        margin: 1rem 0;
    }
    
    .card-icon {
        font-size: 2rem;
    }
    
    .welcome-box {
        padding: 1.25rem;
    }
    
    .welcome-box h2 {
        font-size: 1.3rem;
    }
    
    .card-content {
        padding: 1rem;
    }
}

/* Portrait phones - Extreme small screens */
@media (max-width: 360px) {
    .container {
        padding: 0.5rem;
    }
}

/* PC Layout Adjustments */
@media (min-width: 992px) {
    .container {
        padding: 1.5rem 2rem;
    }
    
    .page-title {
        text-align: center;
        margin-left: auto;
        margin-right: auto;
        padding-left: 0;
    }
    
    /* Full-width layout for desktop after removing side panel */
    .desktop-layout {
        display: block;
        width: 100%;
    }
    
    /* Main content */
    .main-content {
        width: 100%;
        max-width: 1000px;
        margin: 0 auto;
    }
    
    /* Calculator grid for desktop - 2 columns */
    .calculator-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .welcome-box {
        padding: 2rem;
    }
    
    .welcome-box h2 {
        font-size: 1.8rem;
    }

    /* Adjust hero image height for desktop */
    .card-image {
        height: 140px;
    }
}