/* Skills Page Specific Styles */
.skills-section {
    background: #f4f7f9; /* Light grey background */
    min-height: 100vh;
    padding: 10rem 9% 2rem;
    color: #333; /* Default dark text color for the section */
}

.skills-section .container {
    max-width: 1200px;
    margin: 0 auto;
}

.skills-section .heading {
    text-align: center;
    font-size: 4.5rem;
    font-weight: 700;
    margin-bottom: 6rem;
    color: #333;
    position: relative;
}

.skills-section .heading::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--main-color);
    border-radius: 2px;
}

.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
    margin-top: 4rem;
}

.skills-box {
    background: #ffffff; /* Solid white background for cards */
    border: 1px solid #e0e6ed;
    border-top: 4px solid transparent; /* Accent color will be applied here */
    border-radius: 16px;
    padding: 3rem 2.5rem;
    text-align: left; /* Align text to the left for readability */
    transition: all 0.3s ease;
    position: relative;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
}

.skills-box:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08); /* Fallback shadow */
}

.skills-box i {
    font-size: 4.5rem;
    /* Color is now category-specific */
    margin-bottom: 2rem;
    text-align: center; /* Center the icon */
    transition: all 0.3s ease;
}

.skills-box h3 {
    font-size: 2.4rem;
    font-weight: 700;
    margin-bottom: 2.5rem;
    color: #2c3e50;
    text-align: center; /* Center the main title */
}

.skills-box ul {
    text-align: left;
    margin: 0;
    padding: 0;
    flex-grow: 1;
}

.skills-box > ul > li {
    margin-bottom: 2rem;
    font-size: 1.6rem;
    color: #34495e;
    list-style: none;
    padding-left: 0;
}

.skills-box > ul > li::before {
   content: none; /* Remove default marker from top-level li */
}


.skills-box ul ul {
    margin-top: 1rem;
    margin-left: 1.5rem;
    list-style-type: disc;
}

.skills-box ul ul li {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #555;
    opacity: 1;
    padding-left: 0.5rem;
}

.skills-box ul ul li::before {
    /* Use standard list bullets */
    content: '';
    padding-right: 0;
}

.skills-box strong {
    /* Color is now category-specific */
    font-weight: 600;
    font-size: 1.7rem;
    display: block;
    margin-bottom: 1rem;
}

.skills-box strong::before {
    content: '▸';
    margin-right: 0.8rem;
    /* Color is now category-specific */
}

/* --- Category Colors --- */
/* 1. Languages and Frameworks (Blue) */
.skills-box:nth-child(1) { border-top-color: #0d6efd; }
.skills-box:nth-child(1) i, .skills-box:nth-child(1) strong, .skills-box:nth-child(1) strong::before { color: #0d6efd; }
.skills-box:nth-child(1):hover { box-shadow: 0 12px 24px rgba(13, 110, 253, 0.15); }

/* 2. Machine Learning (Purple) */
.skills-box:nth-child(2) { border-top-color: #6f42c1; }
.skills-box:nth-child(2) i, .skills-box:nth-child(2) strong, .skills-box:nth-child(2) strong::before { color: #6f42c1; }
.skills-box:nth-child(2):hover { box-shadow: 0 12px 24px rgba(111, 66, 193, 0.15); }

/* 3. Data Engineering (Orange) */
.skills-box:nth-child(3) { border-top-color: #fd7e14; }
.skills-box:nth-child(3) i, .skills-box:nth-child(3) strong, .skills-box:nth-child(3) strong::before { color: #fd7e14; }
.skills-box:nth-child(3):hover { box-shadow: 0 12px 24px rgba(253, 126, 20, 0.15); }

/* 4. Databases & BI (Teal) */
.skills-box:nth-child(4) { border-top-color: #20c997; }
.skills-box:nth-child(4) i, .skills-box:nth-child(4) strong, .skills-box:nth-child(4) strong::before { color: #20c997; }
.skills-box:nth-child(4):hover { box-shadow: 0 12px 24px rgba(32, 201, 151, 0.15); }

/* 5. MLOps (Pink) */
.skills-box:nth-child(5) { border-top-color: #d63384; }
.skills-box:nth-child(5) i, .skills-box:nth-child(5) strong, .skills-box:nth-child(5) strong::before { color: #d63384; }
.skills-box:nth-child(5):hover { box-shadow: 0 12px 24px rgba(214, 51, 132, 0.15); }

/* 6. Product and Analytics (Green) */
.skills-box:nth-child(6) { border-top-color: #198754; }
.skills-box:nth-child(6) i, .skills-box:nth-child(6) strong, .skills-box:nth-child(6) strong::before { color: #198754; }
.skills-box:nth-child(6):hover { box-shadow: 0 12px 24px rgba(25, 135, 84, 0.15); }

/* Animation for skill boxes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.skills-box {
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

.skills-box:nth-child(1) { animation-delay: 0.1s; }
.skills-box:nth-child(2) { animation-delay: 0.2s; }
.skills-box:nth-child(3) { animation-delay: 0.3s; }
.skills-box:nth-child(4) { animation-delay: 0.4s; }
.skills-box:nth-child(5) { animation-delay: 0.5s; }
.skills-box:nth-child(6) { animation-delay: 0.6s; }

/* Responsive Design */
@media (max-width: 992px) {
    .skills-container {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}
@media (max-width: 768px) {
    .skills-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .skills-box {
        padding: 2.5rem 2rem;
    }
    
    .skills-section .heading {
        font-size: 3.5rem;
        margin-bottom: 4rem;
    }
    
    .skills-box h3 {
        font-size: 2.2rem;
    }
    
    .skills-box ul li {
        font-size: 1.5rem;
    }
    
    .skills-box ul ul li {
        font-size: 1.4rem;
    }
}

@media (max-width: 480px) {
    .skills-section {
        padding: 8rem 5% 2rem;
    }
    
    .skills-section .heading {
        font-size: 3rem;
    }
    
    .skills-box {
        padding: 2rem 1.5rem;
    }
}