/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8fafc;
}

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

/* Header Navigation */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2563eb;
    margin-bottom: 0.2rem;
}

.tagline {
    font-size: 0.8rem;
    color: #6b7280;
    font-weight: 400;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #4b5563;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.2s;
}

.nav-link:hover,
.nav-link.active {
    background-color: #dbeafe;
    color: #2563eb;
}

.nav-mobile {
    display: none;
}

.mobile-menu-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #4b5563;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Search Bar */
.search-container {
    max-width: 500px;
    margin: 0 auto 2rem auto;
    display: flex;
    background: white;
    border-radius: 50px;
    padding: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.search-input {
    flex: 1;
    border: none;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    border-radius: 50px;
    outline: none;
    color: #333;
}

.search-input::placeholder {
    color: #9ca3af;
}

.search-btn {
    background: #2563eb;
    border: none;
    padding: 1rem 1.5rem;
    border-radius: 50px;
    color: white;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.2s;
}

.search-btn:hover {
    background: #1d4ed8;
}

/* Ad Banners */
.ad-banner {
    margin: 2rem auto;
    text-align: center;
}

.ad-placeholder {
    background: #f3f4f6;
    border: 2px dashed #d1d5db;
    padding: 2rem;
    border-radius: 8px;
    color: #6b7280;
    font-weight: 500;
    max-width: 728px;
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

.hero-ad .ad-placeholder {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.3);
    color: rgba(255,255,255,0.8);
}

/* Tools Section */
.tools-section {
    padding: 4rem 0;
}

.tools-grid {
    display: grid;
    gap: 3rem;
}

.tool-category {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.category-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #1f2937;
}

.tool-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.tool-card {
    display: block;
    background: #f8fafc;
    border-radius: 12px;
    padding: 1.5rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    border-color: #e5e7eb;
}

.tool-card.featured {
    background: linear-gradient(135deg, #fef3c7 0%, #fed7aa 100%);
    border-color: #f59e0b;
}

.tool-card.featured:hover {
    border-color: #d97706;
}

.tool-card.coming-soon {
    opacity: 0.6;
    cursor: default;
    background: #f3f4f6;
}

.tool-card.coming-soon:hover {
    transform: none;
    box-shadow: none;
}

.tool-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.tool-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.tool-card p {
    color: #6b7280;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.popularity {
    display: inline-block;
    background: #dbeafe;
    color: #1e40af;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.tool-card.featured .popularity {
    background: #fbbf24;
    color: #92400e;
}

.tool-card.coming-soon .popularity {
    background: #e5e7eb;
    color: #6b7280;
}

/* Features Section */
.features-section {
    background: white;
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #1f2937;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature {
    text-align: center;
    padding: 2rem;
    border-radius: 12px;
    background: #f8fafc;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1f2937;
}

.feature p {
    color: #6b7280;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: #1f2937;
    color: #d1d5db;
    padding: 3rem 0 1rem 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: #2563eb;
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.footer-section h4 {
    color: #f9fafb;
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer-section p {
    line-height: 1.6;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: #d1d5db;
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: #60a5fa;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-link {
    color: #d1d5db;
    text-decoration: none;
    padding: 0.5rem;
    border-radius: 6px;
    background: #374151;
    transition: all 0.2s;
}

.social-link:hover {
    background: #4b5563;
    color: #60a5fa;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
    color: #9ca3af;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-mobile {
        display: block;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .search-container {
        margin: 0 1rem 2rem 1rem;
    }
    
    .tool-cards {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 2rem 0;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .tool-category {
        padding: 1.5rem;
    }
    
    .tool-card {
        padding: 1.25rem;
    }
}