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

:root {
    /* Colors - Based on Datathos.ai pitch deck palette */
    --color-primary: #26B4B9;        /* Teal/Cyan from pitch deck - matches logo */
    --color-primary-dark: #1E9095;   /* Darker teal */
    --color-primary-light: #3BCDD2;  /* Lighter teal */
    --color-secondary: #2A2D3A;      /* Dark navy/charcoal from pitch deck */
    --color-accent: #26B4B9;         /* Teal accent */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    
    /* Neutral colors */
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-text-lighter: #9ca3af;
    --color-bg: #ffffff;
    --color-bg-light: #f9fafb;
    --color-bg-dark: #1a1d28;        /* Very dark navy from pitch deck */
    --color-border: #e5e7eb;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #26B4B9 0%, #1E9095 100%);
    --gradient-accent: linear-gradient(135deg, #26B4B9 0%, #3BCDD2 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-2xl); }

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-outline,
.btn-hero,
.btn-text,
.btn-text-light {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    font-size: var(--font-size-base);
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-hero {
    background: var(--gradient-primary);
    color: white;
    padding: 1rem 2rem;
    font-size: var(--font-size-lg);
}

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

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

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

.btn-outline {
    background-color: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-text {
    background: transparent;
    color: var(--color-text);
    padding: 0.5rem 1rem;
}

.btn-text:hover {
    color: var(--color-primary);
}

.btn-text-light {
    background: transparent;
    color: white;
    padding: 0.5rem 1rem;
}

.btn-text-light:hover {
    color: var(--color-primary-light);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    line-height: 0;
}

.logo-img {
    height: 60px;
    width: auto;
    display: block;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.nav-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

/* Hero Section */
.hero {
    padding: 8rem 0 6rem;
    background: linear-gradient(180deg, var(--color-bg-light) 0%, var(--color-bg) 100%);
    margin-top: 72px;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-3xl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    max-width: 600px;
    margin: 0 auto;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-top: var(--spacing-xs);
}

.stat-source {
    font-size: var(--font-size-xs);
    color: var(--color-text-lighter);
    margin-top: 0.25rem;
}

/* Features Section */
.features {
    padding: var(--spacing-3xl) 0;
}

.platform-diagram {
    max-width: 900px;
    margin: 30px auto 50px;
    padding: 20px;
    background: #dff3f4;
    border-radius: 18px;
    border: 2px solid rgba(38, 180, 185, 0.15);
}

.diagram-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.diagram-logo {
    width: 110px;
    height: 110px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 12px;
    padding: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.diagram-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.diagram-title {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: var(--text);
}

.diagram-divider {
    display: flex;
    align-items: center;
    gap: 14px;
    margin: 14px 0;
}

.divider-line {
    flex: 1;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, var(--primary) 50%, transparent 100%);
}

.divider-symbol {
    font-size: 32px;
    font-weight: 600;
    color: var(--primary);
    min-width: 40px;
    text-align: center;
}

.diagram-pillars {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.pillar-item {
    width: 100%;
    max-width: 400px;
}

.pillar-label {
    padding: 10px 18px;
    background: white;
    border: 2px solid var(--text);
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-align: center;
    color: var(--text);
    transition: all 0.3s ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pillar-item:hover .pillar-label {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(38, 180, 185, 0.3);
}

.pillar-separator {
    font-size: 24px;
    font-weight: 600;
    color: var(--text);
    margin: 0 4px;
}

@media (max-width: 768px) {
    .platform-diagram {
        padding: 18px 16px;
    }
    
    .diagram-logo {
        width: 84px;
        height: 84px;
        padding: 6px;
    }
    
    .diagram-title {
        font-size: 18px;
        letter-spacing: 1px;
    }
    
    .divider-symbol {
        font-size: 24px;
    }
    
    .pillar-item {
        min-width: 120px;
        max-width: 150px;
    }
    
    .pillar-label {
        padding: 12px 16px;
        font-size: 11px;
    }
    
    .pillar-separator {
        font-size: 20px;
        margin: 0 2px;
    }
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
    margin-bottom: var(--spacing-sm);
}

.section-header p {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    padding: var(--spacing-xl);
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

.feature-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.feature-card h3 {
    margin-bottom: var(--spacing-sm);
}

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

/* How it Works Section */
.how-it-works {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-light);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 360px));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
    justify-content: center;
}

.step {
    text-align: center;
    padding: var(--spacing-xl);
}

.step-number {
    display: inline-block;
    width: 60px;
    height: 60px;
    line-height: 60px;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.step h3 {
    margin-bottom: var(--spacing-sm);
}

.step p {
    color: var(--color-text-light);
}

/* CTA Section */
.pricing {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-light);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-3xl);
}

.pricing-card {
    padding: var(--spacing-xl);
    background: white;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    position: relative;
    transition: all var(--transition-base);
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: white;
    padding: 0.375rem 1rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.pricing-card h3 {
    margin-bottom: var(--spacing-md);
}

.price {
    margin-bottom: var(--spacing-lg);
}

.amount {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-text);
}

.period {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
}

.features-list {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.features-list li {
    padding: var(--spacing-xs) 0;
    color: var(--color-text-light);
}

.pricing-card .btn-primary,
.pricing-card .btn-outline {
    width: 100%;
    text-align: center;
}

/* CTA Section */
.cta {
    padding: var(--spacing-3xl) 0;
    background: var(--gradient-primary);
    color: white;
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta h2 {
    color: white;
    margin-bottom: var(--spacing-md);
}

.cta p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

.cta-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* Contact Section */
.contact-section {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
    margin-top: var(--spacing-3xl);
}

.contact-form {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(38, 180, 185, 0.1);
}

.form-group textarea {
    resize: vertical;
}

.btn-submit {
    width: 100%;
    padding: 1rem;
    font-size: var(--font-size-lg);
    margin-top: var(--spacing-md);
}

.form-status {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    text-align: center;
    display: none;
}

.form-status.success {
    display: block;
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.form-status.error {
    display: block;
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.info-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.info-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

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

.info-card a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
}

.info-card a:hover {
    text-decoration: underline;
}

/* Footer */
.footer {
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
    background: var(--color-bg-dark);
    color: white;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
    color: white;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-base);
}

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

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section a {
    color: var(--color-text-lighter);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: var(--color-text-lighter);
    font-size: var(--font-size-sm);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    color: var(--color-text-lighter);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .nav-links {
        display: none;
    }
    
    .features-grid,
    .pricing-grid,
    .testimonials {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .steps {
        grid-template-columns: 1fr;
    }
}

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

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content,
.feature-card,
.step,
.testimonial,
.pricing-card {
    animation: fadeInUp 0.6s ease-out;
}