/*
 * Skill Fountain - Main Styles
 * Shared CSS for all pages
 */

:root {
    --primary: #4361ee;
    --primary-dark: #3a56d4;
    --secondary: #7209b7;
    --accent: #f72585;
    --dark-bg: #0f172a;
    --card-bg: #1e293b;
    --card-hover: #2d3748;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
}

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

::-webkit-scrollbar-track {
    background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--card-bg);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-color);
}

/* Navbar */
.navbar {
    background-color: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    border-bottom: 1px solid rgba(51, 65, 85, 0.3);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    padding: 0.7rem 0;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.8rem;
    color: var(--text-primary) !important;
    display: flex;
    align-items: center;
    text-decoration: none;
}

.navbar-brand span {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar-brand i {
    margin-right: 10px;
    color: var(--primary);
    font-size: 2rem;
}

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--text-primary) !important;
}

.nav-link.active {
    color: var(--primary) !important;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary);
    border-radius: 2px;
}

/* Buttons */
.btn-primary-custom {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary-custom:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(67, 97, 238, 0.3);
    color: white;
}

.btn-outline-custom {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-outline-custom:hover {
    background-color: var(--primary);
    color: white;
    transform: translateY(-2px);
}

/* Page Header */
.page-header {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(30, 41, 59, 0.95) 100%);
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.page-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 1.5rem;
}

.breadcrumb {
    background: transparent;
    margin-bottom: 0;
}

.breadcrumb-item a {
    color: var(--primary);
    text-decoration: none;
}

.breadcrumb-item.active {
    color: var(--text-secondary);
}

.breadcrumb-item + .breadcrumb-item::before {
    color: var(--text-secondary);
}

/* Section Styles */
.section-padding {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 2px;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 3rem;
    max-width: 600px;
}

/* Cards */
.card-custom {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.card-custom:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.card-header-custom {
    padding: 1.5rem 1.5rem 0;
    border-bottom: none;
    background-color: transparent;
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.card-body-custom {
    padding: 1.5rem;
    flex: 1;
}

.card-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

.card-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.card-footer-custom {
    padding: 1rem 1.5rem;
    background-color: rgba(30, 41, 59, 0.7);
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

/* Badges */
.badge-custom {
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge-subject {
    background-color: rgba(67, 97, 238, 0.2);
    color: var(--primary);
}

.badge-difficulty-easy {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.badge-difficulty-medium {
    background-color: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.badge-difficulty-hard {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

/* Footer */
.footer {
    background-color: #0a0f1f;
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-heading {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    display: block;
    margin-bottom: 0.8rem;
    transition: all 0.3s ease;
}

.footer-link:hover {
    color: var(--primary);
    padding-left: 5px;
}

.social-icons {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--card-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-icon:hover {
    background-color: var(--primary);
    color: white;
    transform: translateY(-3px);
}

.copyright {
    text-align: center;
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

/* Pagination */
.pagination {
    gap: 0.5rem;
}

.page-link {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 8px;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
}

.page-link:hover {
    background-color: var(--primary);
    border-color: var(--primary);
    color: white;
}

.page-item.active .page-link {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-color: transparent;
    color: white;
}

.page-item.disabled .page-link {
    background-color: var(--dark-bg);
    border-color: var(--border-color);
    color: var(--text-secondary);
    opacity: 0.5;
}

/* Responsive */
@media (max-width: 992px) {
    .hero-title {
        font-size: 2.8rem;
    }

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

    .page-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.3rem;
    }

    .hero-stats {
        flex-wrap: wrap;
        justify-content: center;
    }

    .section-padding {
        padding: 3rem 0;
    }

    .page-title {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 1.8rem;
    }

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

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

    .btn-responsive {
        display: block;
        width: 100%;
        margin-bottom: 10px;
    }
}