/* 
 * Front-end Custom CSS
 * Portfolio and Blog System
 */

:root {
    --bs-primary: #4e54c8;
    --bs-primary-rgb: 78, 84, 200;
    --bs-primary-hover: #3f44a0;
}

/* General Styles */
body {
    font-family: 'Poppins', 'Microsoft YaHei', sans-serif;
    color: #333;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
}

.btn-primary {
    background-color: var(--bs-primary);
    border-color: var(--bs-primary);
}

.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
    background-color: var(--bs-primary-hover);
    border-color: var(--bs-primary-hover);
}

.btn-outline-primary {
    color: var(--bs-primary);
    border-color: var(--bs-primary);
}

.btn-outline-primary:hover, .btn-outline-primary:focus, .btn-outline-primary:active {
    background-color: var(--bs-primary);
    border-color: var(--bs-primary);
}

.text-primary {
    color: var(--bs-primary) !important;
}

.bg-primary {
    background-color: var(--bs-primary) !important;
}

.border-primary {
    border-color: var(--bs-primary) !important;
}

/* Navbar styles */
.navbar {
    transition: all 0.3s ease;
}

.navbar-light .navbar-nav .nav-link {
    color: #555;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: color 0.3s ease;
}

.navbar-light .navbar-nav .nav-link:hover, 
.navbar-light .navbar-nav .nav-link.active {
    color: var(--bs-primary);
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, #4e54c8, #8f94fb);
}

/* Card styles */
.card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
}

.card:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1) !important;
}

/* Footer styles */
footer {
    background-color: #222;
}

footer a:hover {
    opacity: 0.8;
}

/* Animations */
.fade-in {
    animation: fadeIn 1s ease-in-out;
}

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

/* Responsive adjustments */
@media (max-width: 767.98px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .display-4 {
        font-size: 2.5rem;
    }
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}