.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.skill-category {
    background: rgba(255,255,255,0.08);
    border-radius: 20px; padding: 30px;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255,255,255,0.1);
    transition: all 0.3s ease;
    position: relative; overflow: hidden;
}

.skill-category::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 4px;
    background: linear-gradient(90deg, #4facfe 0%, #00f2fe 100%);
    transform: scaleX(0); transition: transform 0.3s ease;
}

.skill-category:hover { transform: translateY(-5px); box-shadow: 0 20px 40px rgba(79,172,254,0.2); }
.skill-category:hover::before { transform: scaleX(1); }

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

.skill-category.loading {
    opacity: 0.5;
    pointer-events: none;
}

.skill-category.loading::after {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    width: 20px; height: 20px;
    border: 2px solid #4facfe;
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    transform: translate(-50%, -50%);
}

@keyframes spin {
    0%   { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.category-header { display: flex; align-items: center; gap: 15px; margin-bottom: 25px; }

.category-icon {
    width: 50px; height: 50px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; color: white; flex-shrink: 0;
}

.category-title { font-size: 1.5rem; font-weight: 600; color: #ffffff; }
.category-content { flex: 1; }
.category-description { color: #b0b0b0; font-size: 0.9rem; margin: 8px 0 0; line-height: 1.5; }

.skills-list { display: flex; flex-wrap: wrap; gap: 12px; }

.skill-tag {
    background: rgba(79,172,254,0.15);
    border: 1px solid rgba(79,172,254,0.3);
    color: #4facfe;
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 0.9rem; font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
}

.skill-tag:hover {
    background: rgba(79,172,254,0.25);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(79,172,254,0.3);
}

.skill-tag:focus { outline: 2px solid #4facfe; outline-offset: 2px; }

.detailed-skill { position: relative; }

.skill-level { font-size: 0.75rem; color: #4facfe; margin-left: 8px; font-weight: 600; }

.category-stats {
    margin-top: 20px;
    display: flex; justify-content: space-between; align-items: center;
    font-size: 0.8rem; color: #9ca3af;
    padding-top: 15px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.skills-count { font-weight: 600; }
.experience-total { font-style: italic; }

@media (max-width: 768px) {
    .skills-grid { grid-template-columns: 1fr; }
    .category-stats { flex-direction: column; gap: 5px; text-align: center; }
}