/* Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

:root {
    --primary-color: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --secondary-color: #f5f5f5;
    --text-color: #333;
    --text-light: #666;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

body {
    background-color: #f9fafb;
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* Header Styles */
header {
    background-color: white;
    padding: 20px 0;
    border-bottom: 1px solid #eaeaea;
    text-align: center;
}

header h1 {
    color: var(--primary-dark);
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 5px;
}

header .plus {
    color: var(--primary-color);
}

header .subtitle {
    color: var(--text-light);
    font-size: 16px;
}

/* Navigation Styles */
.main-nav {
    background-color: white;
    box-shadow: var(--card-shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.main-nav ul {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding: 15px 0;
}

.main-nav li {
    flex: 0 0 auto;
    padding: 10px 15px;
    margin: 0 5px;
    border-radius: 6px;
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition);
    color: var(--text-light);
    font-weight: 500;
}

.main-nav li i {
    margin-right: 5px;
}

.main-nav li:hover {
    background-color: #f5f7ff;
    color: var(--primary-color);
}

.main-nav li.active {
    background-color: var(--primary-color);
    color: white;
}

/* Tools Section Styles */
.tools-section {
    display: none;
    padding: 30px 0;
}

.tools-section.active {
    display: block;
}

.tools-header {
    margin-bottom: 20px;
}

.tools-header h2 {
    font-size: 24px;
    font-weight: 600;
    display: flex;
    align-items: center;
}

.tools-header h2 i {
    margin-right: 10px;
    color: var(--primary-color);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

/* Tool Card Styles */
.tool-card {
    background-color: white;
    border-radius: 10px;
    padding: 20px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    display: flex;
    align-items: center;
    cursor: pointer;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
}

.tool-icon {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    flex-shrink: 0;
}

.tool-icon i {
    color: white;
    font-size: 24px;
}

.tool-info h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 5px;
}

.tool-info p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.4;
}

/* Footer Styles */
footer {
    background-color: white;
    padding: 20px 0;
    text-align: center;
    border-top: 1px solid #eaeaea;
    margin-top: 30px;
}

footer p {
    color: var(--text-light);
    font-size: 14px;
}

/* Responsive Styles */
@media (max-width: 768px) {
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    }
    
    .main-nav li {
        padding: 8px 12px;
        font-size: 14px;
    }
}

@media (max-width: 576px) {
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    header h1 {
        font-size: 28px;
    }
    
    .tools-header h2 {
        font-size: 20px;
    }
}

/* Tab categories */
.tools-section {
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}