/* TrustSparc Brand Colors */
:root {
    --primary-color: #1a365d;      /* Dark Blue */
    --secondary-color: #2d3748;    /* Dark Gray */
    --accent-color: #667eea;       /* Purple */
    --accent-light: #a3bffa;       /* Light Purple */
    --success-color: #38a169;      /* Green */
    --warning-color: #ed8936;      /* Orange */
    --error-color: #e53e3e;        /* Red */
    --text-primary: #2d3748;       /* Dark Gray */
    --text-secondary: #4a5568;     /* Medium Gray */
    --text-light: #718096;         /* Light Gray */
    --background: #ffffff;         /* White */
    --background-light: #f7fafc;   /* Light Gray */
    --border-color: #e2e8f0;       /* Border Gray */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

/* 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: var(--text-primary);
    background-color: var(--background);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: var(--background);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 80px;
    width: auto;
    object-fit: contain;
}

.nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-1px);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Hero Section with Carousel */
.hero {
    padding: 6rem 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    position: relative;
}

/* Carousel Styles */
.carousel {
    position: relative;
    margin-bottom: 2rem;
}

.carousel-slide {
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
}

.carousel-slide.active {
    opacity: 1;
    position: relative;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.hero-tagline {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

/* Carousel Controls */
.carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.carousel-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.carousel-btn:hover {
    background: var(--accent-color);
    transform: scale(1.1);
}

.carousel-dots {
    display: flex;
    gap: 0.5rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-light);
    cursor: pointer;
    transition: all 0.2s ease;
}

.dot.active {
    background: var(--primary-color);
    transform: scale(1.2);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Hero Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.security-diagram {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
}

.diagram-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--background-light);
    border-radius: 0.5rem;
    min-width: 80px;
}

.diagram-item .icon {
    font-size: 2rem;
}

.diagram-item span {
    font-size: 0.875rem;
    font-weight: 600;
    text-align: center;
}

.diagram-arrow {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: bold;
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: white;
}

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

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

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

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

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

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

/* Demo Section */
.demo-section {
    padding: 6rem 0;
    background: var(--background-light);
}

.demo-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.demo-description h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.demo-features {
    list-style: none;
    margin: 2rem 0;
}

.demo-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.demo-features li strong {
    color: var(--text-primary);
}

.demo-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.preview-card {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.preview-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.preview-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.preview-card ul {
    list-style: none;
    margin-bottom: 1.5rem;
}

.preview-card li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
}

.preview-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

.access-info {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.status-badge {
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.status-badge.secure {
    background: var(--success-color);
    color: white;
}

.status-badge.live {
    background: var(--accent-color);
    color: white;
}

/* Security Section */
.security-section {
    padding: 6rem 0;
    background: white;
}

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

.security-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 2rem;
    background: var(--background-light);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

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

.security-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.security-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

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

/* Contact Section */
.contact {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-align: center;
}

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

.contact-text {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

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

.contact .btn-primary:hover {
    background: var(--background-light);
}

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

.contact .btn-secondary:hover {
    background: white;
    color: var(--primary-color);
}

/* Footer */
.footer {
    background: var(--background-light);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1rem;
}

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

.footer-section h4 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-section ul {
    list-style: none;
}

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

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

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

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    text-align: center;
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav {
        gap: 1rem;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .security-diagram {
        flex-direction: column;
        gap: 1rem;
    }
    
    .diagram-arrow {
        transform: rotate(90deg);
    }
    
    .demo-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .demo-actions {
        justify-content: center;
    }
    
    .security-grid {
        grid-template-columns: 1fr;
    }
    
    .security-item {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-actions {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}