/* Navigation Page Styles */
:root {
--primary-color: #3b82f6;
--primary-hover: #2563eb;
--bg-color: #f8fafc;
--card-bg: #ffffff;
--text-primary: #1e293b;
--text-secondary: #64748b;
--text-muted: #94a3b8;
--border-color: #e2e8f0;
--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
--radius-sm: 8px;
--radius-md: 12px;
--radius-lg: 16px;
--transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
background-color: var(--bg-color);
color: var(--text-primary);
line-height: 1.6;
-webkit-font-smoothing: antialiased;
}
/* Navigation */
.navbar {
background: rgba(255, 255, 255, 0.95);
backdrop-filter: blur(20px);
border-bottom: 1px solid var(--border-color);
position: sticky;
top: 0;
z-index: 1000;
transition: var(--transition);
}
.navbar-container {
max-width: 1400px;
margin: 0 auto;
padding: 0 24px;
display: flex;
align-items: center;
justify-content: space-between;
height: 64px;
}
.navbar-brand {
display: flex;
align-items: center;
gap: 12px;
text-decoration: none;
color: var(--text-primary);
font-weight: 700;
font-size: 1.25rem;
}
.navbar-brand img {
width: 32px;
height: 32px;
border-radius: 8px;
}
.navbar-nav {
display: flex;
align-items: center;
gap: 8px;
list-style: none;
}
.nav-link {
text-decoration: none;
color: var(--text-secondary);
font-weight: 500;
font-size: 0.9rem;
padding: 8px 16px;
border-radius: var(--radius-sm);
transition: var(--transition);
}
.nav-link:hover {
color: var(--primary-color);
background: rgba(59, 130, 246, 0.1);
}
.nav-link.active {
color: var(--primary-color);
background: rgba(59, 130, 246, 0.1);
}
/* Hero Section */
.hero {
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
padding: 80px 24px;
text-align: center;
position: relative;
overflow: hidden;
}
.hero::before {
content: '';
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
opacity: 0.5;
}
.hero-content {
position: relative;
z-index: 1;
max-width: 800px;
margin: 0 auto;
}
.hero h1 {
font-size: 3rem;
font-weight: 700;
color: white;
margin-bottom: 16px;
letter-spacing: -0.02em;
}
.hero p {
font-size: 1.25rem;
color: rgba(255, 255, 255, 0.9);
margin-bottom: 32px;
font-weight: 400;
}
/* Search Box */
.search-container {
max-width: 600px;
margin: 0 auto 40px;
position: relative;
}
.search-box {
width: 100%;
padding: 16px 24px 16px 56px;
font-size: 1rem;
border: none;
border-radius: var(--radius-lg);
background: white;
box-shadow: var(--shadow-lg);
transition: var(--transition);
font-family: inherit;
}
.search-box:focus {
outline: none;
box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}
.search-icon {
position: absolute;
left: 20px;
top: 50%;
transform: translateY(-50%);
color: var(--text-muted);
font-size: 1.25rem;
}
/* Quick Links */
.quick-links {
display: flex;
justify-content: center;
gap: 12px;
flex-wrap: wrap;
}
.quick-link {
display: inline-flex;
align-items: center;
gap: 8px;
padding: 10px 20px;
background: rgba(255, 255, 255, 0.15);
backdrop-filter: blur(10px);
border: 1px solid rgba(255, 255, 255, 0.2);
border-radius: var(--radius-md);
color: white;
text-decoration: none;
font-size: 0.9rem;
font-weight: 500;
transition: var(--transition);
}
.quick-link:hover {
background: rgba(255, 255, 255, 0.25);
transform: translateY(-2px);
}
/* Main Content */
.main-content {
max-width: 1400px;
margin: 0 auto;
padding: 48px 24px;
}
/* Category Grid */
.category-grid {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
gap: 24px;
margin-top: 32px;
}
.category-card {
background: var(--card-bg);
border-radius: var(--radius-lg);
box-shadow: var(--shadow-sm);
border: 1px solid var(--border-color);
overflow: hidden;
transition: var(--transition);
}
.category-card:hover {
box-shadow: var(--shadow-lg);
transform: translateY(-4px);
}
.category-header {
padding: 20px 24px;
border-bottom: 1px solid var(--border-color);
display: flex;
align-items: center;
gap: 12px;
}
.category-icon {
width: 40px;
height: 40px;
border-radius: var(--radius-md);
display: flex;
align-items: center;
justify-content: center;
font-size: 1.25rem;
}
.category-title {
font-size: 1.125rem;
font-weight: 600;
color: var(--text-primary);
}
.category-count {
margin-left: auto;
font-size: 0.75rem;
color: var(--text-muted);
background: var(--bg-color);
padding: 4px 10px;
border-radius: 20px;
font-weight: 500;
}
.category-links {
padding: 16px;
display: grid;
grid-template-columns: repeat(2, 1fr);
gap: 8px;
}
.nav-link-item {
display: flex;
align-items: center;
padding: 12px 16px;
text-decoration: none;
color: var(--text-secondary);
border-radius: var(--radius-sm);
transition: var(--transition);
font-size: 0.9rem;
font-weight: 500;
}
.nav-link-item:hover {
background: var(--bg-color);
color: var(--primary-color);
}
.nav-link-item::before {
content: '•';
margin-right: 8px;
color: var(--primary-color);
font-weight: bold;
}
/* Footer */
.footer {
background: white;
border-top: 1px solid var(--border-color);
padding: 48px 24px 24px;
margin-top: 64px;
}
.footer-content {
max-width: 1400px;
margin: 0 auto;
text-align: center;
}
.social-links {
display: flex;
justify-content: center;
gap: 16px;
margin-bottom: 24px;
}
.social-link {
width: 44px;
height: 44px;
border-radius: var(--radius-md);
display: flex;
align-items: center;
justify-content: center;
background: var(--bg-color);
color: var(--text-secondary);
text-decoration: none;
transition: var(--transition);
font-size: 1.125rem;
}
.social-link:hover {
background: var(--primary-color);
color: white;
transform: translateY(-2px);
}
.footer-text {
color: var(--text-muted);
font-size: 0.875rem;
}
.footer-text a {
color: var(--primary-color);
text-decoration: none;
}
/* Loading State */
.loading-container {
display: flex;
justify-content: center;
align-items: center;
min-height: 300px;
}
.loading-spinner {
width: 48px;
height: 48px;
border: 4px solid var(--border-color);
border-top-color: var(--primary-color);
border-radius: 50%;
animation: spin 1s linear infinite;
}
@keyframes spin {
to { transform: rotate(360deg); }
}
/* No Results */
.no-results {
text-align: center;
padding: 64px 24px;
color: var(--text-muted);
}
.no-results i {
font-size: 3rem;
margin-bottom: 16px;
display: block;
}
/* Responsive */
@media (max-width: 768px) {
.navbar-nav {
display: none;
}
.hero h1 {
font-size: 2rem;
}
.hero p {
font-size: 1rem;
}
.category-grid {
grid-template-columns: 1fr;
}
.category-links {
grid-template-columns: 1fr;
}
}
/* Category Icon Colors */
.icon-main { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; }
.icon-common { background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); color: white; }
.icon-ai { background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%); color: white; }
.icon-python { background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%); color: white; }
.icon-learning { background: linear-gradient(135deg, #fa709a 0%, #fee140 100%); color: white; }
.icon-writing { background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%); color: #333; }
.icon-tools { background: linear-gradient(135deg, #d299c2 0%, #fef9d7 100%); color: #333; }