/* Skills Section */
#skills {
    background:
        radial-gradient(circle at 80% 50%, rgba(255, 107, 53, 0.10) 0px, transparent 16%),
        radial-gradient(circle at 20% 50%, rgba(255, 159, 28, 0.08) 0px, transparent 14%),
        #0D0D0D;
}

/* Tier info tooltip */
.tier-info {
    position: relative;
    display: inline-block;
    margin-left: 10px;
    font-size: 16px;
    cursor: help;
    opacity: 0.7;
}

.tier-tooltip {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0, 0, 0, 0.9);
    color: #fff;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    white-space: nowrap;
    margin-top: 8px;
    z-index: 10;
    transition: opacity 0.3s, visibility 0.3s;
}

.tier-info:hover .tier-tooltip {
    visibility: visible;
    opacity: 1;
}

/* Skills container - 3 column grid */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.skill-category {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: 10px;
    box-shadow:
        0 1px 2px rgba(0, 0, 0, 0.3),
        0 8px 16px rgba(0, 0, 0, 0.15),
        0 16px 32px rgba(255, 107, 53, 0.1);
    border: 1px solid var(--border-color);
}

.skill-category h3 {
    margin-bottom: 20px;
    color: var(--primary-color);
    text-align: center;
}

/* Tier group - horizontal bar */
.tier-group {
    display: flex;
    align-items: stretch;
    margin-bottom: 12px;
    border-radius: 8px;
    overflow: hidden;
    border: 2px solid;
    min-height: 55px;
    opacity: 0;
    transform: translateY(30px);
}

.tier-group:last-child {
    margin-bottom: 0;
}

/* Tier header - colored label box */
.tier-header {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 50px;
    padding: 8px;
    flex-shrink: 0;
}

.tier-emoji {
    font-size: 28px;
    line-height: 1;
}

/* S Tier - Red (🏆) */
.tier-group:nth-of-type(1) .tier-header {
    background: linear-gradient(135deg, #dc2626, #991b1b);
}

.tier-group:nth-of-type(1) {
    border-color: #dc2626;
    background-color: rgba(220, 38, 38, 0.08);
}

/* A Tier - Gold (⭐) */
.tier-group:nth-of-type(2) .tier-header {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.tier-group:nth-of-type(2) {
    border-color: #f59e0b;
    background-color: rgba(245, 158, 11, 0.08);
}

/* B Tier - Silver (🥈) */
.tier-group:nth-of-type(3) .tier-header {
    background: linear-gradient(135deg, #9ca3af, #6b7280);
}

.tier-group:nth-of-type(3) {
    border-color: #9ca3af;
    background-color: rgba(156, 163, 175, 0.08);
}

/* C Tier - Bronze (🥉) */
.tier-group:nth-of-type(4) .tier-header {
    background: linear-gradient(135deg, #b45309, #92400e);
}

.tier-group:nth-of-type(4) {
    border-color: #b45309;
    background-color: rgba(180, 83, 9, 0.08);
}

/* Skill icons container */
.skill-icons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 8px;
    flex: 1;
}

.skill-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 6px;
    width: 55px;
    height: 55px;
    border-radius: 6px;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid transparent;
}

.skill-icon img {
    width: 24px;
    height: 24px;
    object-fit: contain;
    margin-bottom: 4px;
}

.skill-icon span {
    font-size: 9px;
    text-align: center;
    font-weight: 500;
    color: var(--text-color);
    line-height: 1.1;
}