/* Approach Page Specific Styles */

/* Navigation active state */
.nav-links a.active {
    color: var(--primary-color);
    font-weight: 600;
}

/* Hero Section */
.approach-hero {
    background: linear-gradient(135deg, var(--background-secondary) 0%, var(--background-tertiary) 50%, var(--background-primary) 100%);
    padding: 6rem 2rem 4rem;
    position: relative;
    overflow: hidden;
}

.approach-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 40%, rgba(249, 115, 22, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(251, 191, 36, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.approach-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
    text-align: center;
    text-shadow: 0 0 30px rgba(249, 115, 22, 0.3);
    animation: fadeInUp 0.8s ease-out;
}

.approach-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

/* Content Container */
.content-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Introduction Section */
.approach-intro {
    padding: 4rem 0;
    background: var(--background-primary);
}

.intro-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 4rem;
    align-items: center;
}

.intro-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    position: relative;
}

.intro-text h2::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 4rem;
    height: 0.25rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 0.125rem;
}

.intro-text p {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Approach Diagram */
.approach-diagram {
    position: relative;
    width: 350px;
    height: 350px;
    margin: 0 auto;
}

.diagram-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    font-weight: 600;
    text-align: center;
}

.diagram-center i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.diagram-center span {
    font-size: 0.875rem;
    line-height: 1.2;
}

.diagram-points {
    position: relative;
    width: 100%;
    height: 100%;
}

.point {
    position: absolute;
    background: var(--background-secondary);
    border: 2px solid var(--primary-color);
    color: var(--text-primary);
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.point:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
    background: var(--primary-color);
    color: white;
}

.point i {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.point span {
    font-size: 0.75rem;
    line-height: 1.1;
}

.point-1 { top: 0; left: 50%; transform: translateX(-50%); }
.point-2 { top: 50%; right: 0; transform: translateY(-50%); }
.point-3 { bottom: 0; left: 50%; transform: translateX(-50%); }
.point-4 { top: 50%; left: 0; transform: translateY(-50%); }

/* Four Pillars Section */
.four-pillars {
    padding: 4rem 0;
    background: var(--background-secondary);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -1rem;
    left: 50%;
    transform: translateX(-50%);
    width: 6rem;
    height: 0.25rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 0.125rem;
}

/* Pillar Cards */
.pillar-card {
    background: var(--background-primary);
    border-radius: var(--border-radius-lg);
    margin-bottom: 3rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    overflow: hidden;
    transition: all 0.3s ease;
}

.pillar-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.pillar-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 2.5rem 2rem;
    text-align: center;
    position: relative;
}

.pillar-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1rem;
    background: linear-gradient(45deg, transparent 49%, white 50%, transparent 51%);
}

.pillar-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    backdrop-filter: blur(10px);
}

.pillar-icon i {
    font-size: 2.5rem;
    color: white;
}

.pillar-header h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.pillar-subtitle {
    font-size: 1rem;
    opacity: 0.9;
    font-weight: 400;
}

.pillar-content {
    padding: 3rem 2rem;
}

/* Principles Grid */
.principles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.principle-item {
    background: var(--background-secondary);
    border-radius: var(--border-radius);
    padding: 2rem;
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.principle-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.principle-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.principle-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.principle-item h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.principle-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Implementation Section */
.implementation-section {
    padding: 4rem 0;
    background: var(--background-primary);
}

.implementation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.implementation-step {
    text-align: center;
    padding: 2rem;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
    box-shadow: var(--shadow-md);
}

.implementation-step h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.implementation-step p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Evidence Section */
.evidence-section {
    padding: 4rem 0;
    background: var(--background-secondary);
}

.evidence-content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 4rem;
    align-items: center;
    margin-top: 2rem;
}

.evidence-text p {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.evidence-list {
    list-style: none;
    padding: 0;
}

.evidence-list li {
    background: var(--background-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 1rem;
    position: relative;
    padding-left: 3rem;
}

.evidence-list li::before {
    content: '✓';
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.25rem;
}

.evidence-list strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* Research Stats */
.research-stats {
    background: var(--background-primary);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
}

.stat-item {
    text-align: center;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-light);
}

.stat-item:last-child {
    border-bottom: none;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.4;
}

/* Call to Action Section */
.approach-cta {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

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

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

.btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

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

/* Footer Links */
.footer-links {
    list-style: none;
    padding: 0;
}

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

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-bottom a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-bottom a:hover {
    color: var(--primary-color);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .approach-title {
        font-size: 2.5rem;
    }
    
    .intro-grid,
    .evidence-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .intro-visual,
    .evidence-visual {
        order: -1;
    }
    
    .approach-diagram {
        width: 280px;
        height: 280px;
    }
    
    .diagram-center {
        width: 100px;
        height: 100px;
    }
    
    .point {
        width: 80px;
        height: 80px;
    }
    
    .principles-grid {
        grid-template-columns: 1fr;
    }
    
    .implementation-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}