/* TDWA Hub Styles */
:root {
    --primary-blue: #1e3a8a;
    --secondary-blue: #3b82f6;
    --light-blue: #dbeafe;
    --accent-blue: #2563eb;
    --dark-blue: #1e40af;
    --teal: #14b8a6;
    --purple: #8b5cf6;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-600: #4b5563;
    --gray-800: #1f2937;
    --shadow: 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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero Introduction Section */
.hub-introduction {
    text-align: center;
    padding: 80px 0 60px;
    position: relative;
    overflow: hidden;
}

.hub-introduction::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 100" fill="%231e3a8a" opacity="0.03"><polygon points="0,0 1000,50 1000,100 0,100"/></svg>');
    background-size: cover;
    z-index: -1;
}

.hub-introduction h1 {
    font-size: 4rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-blue), var(--purple));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.hub-introduction h1::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 25%;
    width: 50%;
    height: 5px;
    background: linear-gradient(90deg, var(--secondary-blue), var(--primary-blue));
    border-radius: 3px;
}

.hub-introduction .hub-description {
    font-size: 1.4rem;
    color: var(--gray-600);
    max-width: 800px;
    margin: 0 auto 60px;
    line-height: 1.7;
}

/* Hubs Container */
.hubs-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 40px;
    margin-bottom: 80px;
}

.hub-card {
    background: white;
    border-radius: 25px;
    padding: 40px;
    box-shadow: var(--shadow-xl);
    transition: all 0.4s ease;
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.hub-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 8px;
    background: linear-gradient(90deg, var(--secondary-blue), var(--primary-blue));
}

.hub-card.learning-hub-card::before {
    background: linear-gradient(90deg, var(--secondary-blue), var(--teal));
}

.hub-card.ascend-hub-card::before {
    background: linear-gradient(90deg, var(--purple), var(--secondary-blue));
}

.hub-card:hover {
    transform: translateY(-15px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.hub-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 30px;
    border-radius: 25px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s;
    border: 5px solid white;
}

.hub-card:hover .hub-icon {
    transform: scale(1.1);
}

.hub-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hub-card h2 {
    font-size: 2.2rem;
    color: var(--dark-blue);
    margin-bottom: 15px;
    text-align: center;
}

.hub-card .hub-description {
    font-size: 1.1rem;
    color: var(--gray-600);
    margin-bottom: 20px;
    text-align: center;
    line-height: 1.6;
}

.hub-card p {
    color: var(--gray-600);
    margin-bottom: 25px;
    line-height: 1.6;
    flex-grow: 1;
}

.hub-features {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
    justify-content: center;
}

.feature-tag {
    background: var(--light-blue);
    color: var(--dark-blue);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s;
}

.feature-tag:hover {
    background: var(--secondary-blue);
    color: white;
    transform: translateY(-2px);
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-family: 'Poppins', sans-serif;
    font-size: 1.1rem;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.cta-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.cta-btn:hover::before {
    left: 100%;
}

.cta-btn.primary {
    background: linear-gradient(135deg, var(--secondary-blue), var(--primary-blue));
    color: white;
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.4);
}

.cta-btn.primary:hover {
    background: linear-gradient(135deg, var(--accent-blue), var(--dark-blue));
    transform: translateY(-3px);
    box-shadow: 0 12px 25px rgba(59, 130, 246, 0.5);
}

/* Hub Comparison Section */
.hub-comparison {
    background: white;
    border-radius: 25px;
    padding: 60px 40px;
    box-shadow: var(--shadow-xl);
    margin-bottom: 80px;
    position: relative;
    overflow: hidden;
}

.hub-comparison::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 8px;
    background: linear-gradient(90deg, var(--secondary-blue), var(--primary-blue));
}

.hub-comparison h2 {
    text-align: center;
    color: var(--dark-blue);
    font-size: 2.5rem;
    margin-bottom: 40px;
    position: relative;
}

.hub-comparison h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary-blue), var(--primary-blue));
    border-radius: 2px;
}

.comparison-table {
    overflow-x: auto;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

thead {
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
}

th {
    color: white;
    padding: 20px;
    text-align: left;
    font-weight: 600;
    font-size: 1.1rem;
}

th:first-child {
    border-radius: 15px 0 0 0;
}

th:last-child {
    border-radius: 0 15px 0 0;
}

tbody tr {
    transition: background 0.3s;
}

tbody tr:nth-child(even) {
    background: var(--gray-50);
}

tbody tr:hover {
    background: var(--light-blue);
}

td {
    padding: 20px;
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-800);
}

td:first-child {
    font-weight: 600;
    color: var(--dark-blue);
}

/* Stats Section */
.hub-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 80px;
}

.stat-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
    border-top: 4px solid var(--secondary-blue);
}

.stat-card:hover {
    transform: translateY(-10px);
}

.stat-icon {
    font-size: 3rem;
    color: var(--secondary-blue);
    margin-bottom: 15px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-blue);
    margin-bottom: 10px;
}

.stat-label {
    color: var(--gray-600);
    font-size: 1.1rem;
}

/* Platform Features */
.platform-features {
    margin-bottom: 80px;
}

.platform-features h2 {
    text-align: center;
    color: var(--dark-blue);
    font-size: 2.5rem;
    margin-bottom: 50px;
    position: relative;
}

.platform-features h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary-blue), var(--primary-blue));
    border-radius: 2px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    border: 1px solid var(--gray-200);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.feature-card i {
    font-size: 2.5rem;
    color: var(--secondary-blue);
    margin-bottom: 20px;
}

.feature-card h3 {
    color: var(--dark-blue);
    margin-bottom: 15px;
    font-size: 1.4rem;
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .hubs-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hub-introduction {
        padding: 60px 0 40px;
    }
    
    .hub-introduction h1 {
        font-size: 3rem;
    }
    
    .hub-introduction .hub-description {
        font-size: 1.2rem;
    }
    
    .hubs-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .hub-card {
        padding: 30px 25px;
    }
    
    .hub-comparison {
        padding: 40px 20px;
    }
    
    .hub-comparison h2 {
        font-size: 2rem;
    }
    
    .hub-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hub-introduction h1 {
        font-size: 2.5rem;
    }
    
    .hub-card h2 {
        font-size: 1.8rem;
    }
    
    .hub-stats {
        grid-template-columns: 1fr;
    }
    
    .hub-features {
        justify-content: flex-start;
    }
    
    .feature-tag {
        font-size: 0.8rem;
    }
    
    .cta-btn {
        padding: 14px 25px;
        font-size: 1rem;
    }
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}