:root {
    --t4dev-primary: #007cba;
    --t4dev-secondary: #00a0d6;
    --t4dev-dark: #1a1a1a;
    --t4dev-darker: #2d2d2d;
    --t4dev-darkest: #0a0a0a;
    --t4dev-light: #e0e0e0;
    --t4dev-muted: #b0b0b0;
    --t4dev-card: #2d2d2d;
    --t4dev-card-alt: #404040;
    --t4dev-border: rgba(64, 64, 64, 0.3);
    --t4dev-success: #28a745;
    --t4dev-success-alt: #34ce57;
    --t4dev-warning: #ffc107;
    --t4dev-warning-alt: #ffcd39;
    --t4dev-danger: #dc3545;
    --t4dev-danger-alt: #e55a6c;
}

/* T4Dev Tools Styles - Enhanced Dark Mode */

.t4dev-tools-container {
    background: linear-gradient(135deg, var(--t4dev-dark) 0%, var(--t4dev-darker) 100%);
    color: var(--t4dev-light);
    padding: 3rem 2rem;
    border-radius: 16px;
    margin: 2rem 0;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    position: relative;
    overflow: hidden;
}

.t4dev-tools-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--t4dev-primary), var(--t4dev-secondary), var(--t4dev-primary));
    background-size: 200% 100%;
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { background-position: 200% 0; }
    50% { background-position: -200% 0; }
}

.t4dev-tools-header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.tools-title {
    font-size: 3rem;
    font-weight: 800;
    color: #ffffff;
    margin: 0 0 1rem 0;
    text-shadow: 0 4px 8px rgba(0,0,0,0.5);
    background: linear-gradient(135deg, #ffffff, var(--t4dev-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.tools-subtitle {
    font-size: 1.2rem;
    color: var(--t4dev-muted);
    margin: 0;
    opacity: 0.9;
    font-weight: 300;
}

.tool-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin-bottom: 3rem;
    padding: 1rem;
    background: rgba(45, 45, 45, 0.5);
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.category-btn {
    background: rgba(45, 45, 45, 0.8);
    color: var(--t4dev-light);
    border: 1px solid var(--t4dev-border);
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.category-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left 0.5s;
}

.category-btn:hover::before {
    left: 100%;
}

.category-btn:hover,
.category-btn.active {
    background: linear-gradient(135deg, var(--t4dev-primary), var(--t4dev-secondary));
    border-color: var(--t4dev-primary);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 124, 186, 0.3);
}

.tools-grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tools-grid[data-columns="2"] {
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
}

.tools-grid[data-columns="4"] {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.tool-card {
    background: linear-gradient(145deg, var(--t4dev-card), var(--t4dev-card-alt));
    border: 1px solid var(--t4dev-border);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: flex;
    flex-direction: column;
    position: relative;
    backdrop-filter: blur(20px);
    animation: slideInCard 0.6s ease-out;
}

@keyframes slideInCard {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0,124,186,0.1), transparent, rgba(0,160,214,0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.tool-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4), 0 0 0 1px rgba(0,124,186,0.5);
    border-color: rgba(0,124,186,0.6);
}

.tool-card:hover::before {
    opacity: 1;
}

.tool-image {
    height: 220px;
    background: linear-gradient(135deg, var(--t4dev-darkest), var(--t4dev-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.tool-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to top, rgba(45,45,45,0.8), transparent);
    pointer-events: none;
}

.tool-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.tool-card:hover .tool-image img {
    transform: scale(1.05);
}

.tool-placeholder {
    width: 90px;
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,124,186,0.1);
    border-radius: 20px;
    border: 2px solid rgba(0,124,186,0.2);
}

.tool-icon {
    width: 60%;
    height: 60%;
    color: var(--t4dev-primary);
}

.tool-content {
    padding: 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    position: relative;
}

.tool-name {
    font-size: 1.4rem;
    font-weight: 700;
    color: #ffffff;
    margin: 0 0 0.75rem 0;
    line-height: 1.3;
    background: linear-gradient(135deg, #ffffff, var(--t4dev-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tool-name-link {
    text-decoration: none;
    color: inherit;
}

.tool-name-link:hover .tool-name {
    color: var(--t4dev-primary);
    background: none;
    -webkit-text-fill-color: initial;
}

.tool-description {
    color: var(--t4dev-muted);
    line-height: 1.6;
    margin: 0 0 1.5rem 0;
    flex-grow: 1;
    font-weight: 400;
}

.tool-meta {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.tool-price {
    background: linear-gradient(135deg, var(--t4dev-primary), var(--t4dev-secondary));
    color: #ffffff;
    padding: 0.4rem 0.8rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
    box-shadow: 0 2px 4px rgba(0,124,186,0.3);
}

.tool-access {
    padding: 0.4rem 0.8rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.tool-access.free {
    background: linear-gradient(135deg, var(--t4dev-success), var(--t4dev-success-alt));
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.tool-access.paid {
    background: linear-gradient(135deg, var(--t4dev-warning), var(--t4dev-warning-alt));
    color: #000000;
    text-shadow: 0 1px 2px rgba(255,255,255,0.3);
}

.tool-access.premium {
    background: linear-gradient(135deg, var(--t4dev-danger), var(--t4dev-danger-alt));
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.tool-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: auto;
}

.btn {
    padding: 0.875rem 1.25rem;
    border: none;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    min-height: 48px;
}

.btn-icon {
    margin-right: 0.5rem;
    font-size: 1.1rem;
}

.btn-full {
    flex: 1 1 100%;
}

.btn::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 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--t4dev-primary), var(--t4dev-secondary));
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(0,124,186,0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #005a87, var(--t4dev-primary));
    color: #ffffff;
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,124,186,0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--t4dev-primary);
    border: 2px solid var(--t4dev-primary);
    box-shadow: 0 4px 15px rgba(0,124,186,0.1);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--t4dev-primary), var(--t4dev-secondary));
    color: #ffffff;
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,124,186,0.4);
}

.btn-secondary.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn-secondary.disabled:hover {
    background: transparent;
    color: var(--t4dev-primary);
    transform: none;
}

.no-tools {
    text-align: center;
    color: var(--t4dev-muted);
    font-size: 1.2rem;
    padding: 4rem 2rem;
    background: rgba(45, 45, 45, 0.3);
    border-radius: 12px;
    border: 1px dashed var(--t4dev-border);
}

/* Enhanced Responsive Design */
@media (max-width: 768px) {
    .t4dev-tools-container {
        padding: 2rem 1rem;
        margin: 1rem 0;
        border-radius: 12px;
    }

    .tools-title {
        font-size: 2.2rem;
    }

    .tools-subtitle {
        font-size: 1rem;
    }

    .tools-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .tool-actions {
        flex-direction: column;
        gap: 0.5rem;
    }

    .category-btn {
        font-size: 0.85rem;
        padding: 0.6rem 1.2rem;
    }

    .tool-content {
        padding: 1.5rem;
    }

    .tool-categories {
        padding: 0.75rem;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .tool-content {
        padding: 1.25rem;
    }

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

    .tool-image {
        height: 180px;
    }

    .category-btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
}

/* Loading Animation */
.tools-grid.loading {
    opacity: 0.7;
}

.tools-grid.loading .tool-card {
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Smooth Category Filtering */
.tool-card.hiding {
    animation: fadeOut 0.3s ease-out forwards;
}

.tool-card.showing {
    animation: fadeInScale 0.4s ease-out forwards;
}

@keyframes fadeOut {
    to {
        opacity: 0;
        transform: scale(0.8) translateY(-20px);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}