/* Visual Case Study - Modern Design System */

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #1f2937;
    overflow-x: hidden;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.05"><circle cx="30" cy="30" r="2"/></g></g></svg>') repeat;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.hero-content {
    flex: 1;
    z-index: 1;
    color: white;
    max-width: 600px;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.highlight-red {
    color: #ff6b6b;
}

.highlight-green {
    color: #51cf66;
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    display: block;
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
    margin-top: 0.5rem;
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1;
}

.route-animation {
    width: 400px;
    height: 300px;
    position: relative;
}

.route-svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.2));
}

.route-line {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: drawRoute 3s ease-in-out infinite;
}

@keyframes drawRoute {
    0% { stroke-dashoffset: 1000; }
    50% { stroke-dashoffset: 0; }
    100% { stroke-dashoffset: -1000; }
}

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

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-block;
    background: #f3f4f6;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    color: #6b7280;
    margin-bottom: 1rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1f2937;
}

/* Problem Section */
.problem-section {
    background: #fafafa;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.problem-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.problem-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.problem-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.problem-metric {
    font-size: 2.5rem;
    font-weight: 700;
    color: #dc2626;
    margin-bottom: 0.5rem;
}

.problem-label {
    font-size: 1rem;
    color: #6b7280;
    font-weight: 500;
}

/* Solution Section */
.solution-section {
    background: white;
}

.solution-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.solution-step {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    max-width: 300px;
    position: relative;
    border: 2px solid #e5e7eb;
    transition: all 0.3s ease;
}

.solution-step:hover {
    border-color: #3b82f6;
    transform: scale(1.02);
}

.step-number {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: #3b82f6;
    color: white;
    border-radius: 50%;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.step-content p {
    color: #6b7280;
    font-size: 0.875rem;
}

.flow-arrow {
    font-size: 2rem;
    color: #3b82f6;
    font-weight: bold;
}

/* Results Section */
.results-section {
    background: #f8fafc;
}

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

.result-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.result-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.before-after {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.before, .after {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.value {
    font-size: 1.5rem;
    font-weight: 700;
}

.value.red {
    color: #dc2626;
}

.value.green {
    color: #059669;
}

.arrow {
    font-size: 1.5rem;
    color: #3b82f6;
}

.metric-label {
    font-size: 1rem;
    color: #6b7280;
    font-weight: 500;
}

/* Tech Section */
.tech-section {
    background: white;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.tech-item {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid #e5e7eb;
}

.tech-item:hover {
    border-color: #3b82f6;
    transform: scale(1.05);
}

.tech-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.tech-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1f2937;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #1f2937 0%, #374151 100%);
    color: white;
    text-align: center;
}

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

.cta-content p {
    font-size: 1.125rem;
    opacity: 0.8;
    margin-bottom: 2rem;
}

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

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn.primary {
    background: #3b82f6;
    color: white;
    border-color: #3b82f6;
}

.btn.primary:hover {
    background: #2563eb;
    border-color: #2563eb;
    transform: translateY(-2px);
}

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

.btn.secondary:hover {
    background: white;
    color: #1f2937;
    transform: translateY(-2px);
}

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

.animate {
    animation: fadeInUp 0.6s ease forwards;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 2rem 0;
    }
    
    .hero-visual {
        margin-top: 2rem;
    }
    
    .route-animation {
        width: 300px;
        height: 200px;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .solution-flow {
        flex-direction: column;
    }
    
    .flow-arrow {
        transform: rotate(90deg);
    }
    
    .before-after {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .arrow {
        transform: rotate(90deg);
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .problem-grid,
    .results-grid,
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    section {
        padding: 3rem 0;
    }
}