.tool-card {
    background: var(--gradient-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease-out forwards;
}

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

.tool-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.tool-card-unused {
    position: relative;
}

.tool-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backdrop-filter: blur(6px);
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    opacity: 1;
    pointer-events: none;
}

.theme-light .tool-card-overlay {
    background: rgba(255, 255, 255, 0.85);
}

.tool-card-unused:hover .tool-card-overlay {
    opacity: 0;
    backdrop-filter: blur(0);
}

.outdated-text {
    font-size: 2.0rem;
    font-weight: 800;
    color: rgba(239, 68, 68, 0.9);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    text-shadow: 0 0 20px rgba(239, 68, 68, 0.5);
    transform: rotate(-15deg);
    transition: all var(--transition-base);
}

.tool-card-unused:hover .outdated-text {
    opacity: 0;
    transform: rotate(-15deg) scale(0.8);
}

.tool-version {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.25rem 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    z-index: 2;
}

.tool-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.tool-icon-wrapper {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    position: relative;
    overflow: hidden;
}

.tool-icon-wrapper.uuid { background: var(--gradient-primary); }
.tool-icon-wrapper.mp { background: linear-gradient(135deg, #10b981, #059669); }
.tool-icon-wrapper.duble { background: linear-gradient(135deg, #f59e0b, #d97706); }
.tool-icon-wrapper.format { background: var(--gradient-secondary); }
.tool-icon-wrapper.json { background: linear-gradient(135deg, #06b6d4, #0891b2); }
.tool-icon-wrapper.wiki { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.tool-icon-wrapper.qr { background: linear-gradient(135deg, #f6e45c, #ed8b3a); }
.tool-icon-wrapper.act { background: linear-gradient(135deg, rgba(239, 68, 68, 0.9), #ec4899); }

.tool-info {
    flex: 1;
    min-height: 80px;
}

.tool-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
}

.tool-description {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.tool-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.2);
    min-height: 78px;
}

.theme-light .tool-footer {
    background: rgba(248, 250, 252, 0.7);
    border-top: 1px solid rgba(226, 232, 240, 0.8);
}

.tool-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-instructions {
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-instructions:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-border-hover);
    color: var(--primary-400);
}

.tool-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 600;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.tool-link:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md), var(--glow-primary);
}

.tool-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.7s;
}

.tool-link:hover::before {
    left: 100%;
}