/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    z-index: 1000;
    border-radius: 0 0 var(--radius) 0;
    font-weight: 500;
}

.skip-link:focus {
    top: 0;
}

/* Focus Visible for Keyboard Navigation */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Respect Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

:root {
    --color-bg: #f3f4f6;
    --color-surface: #ffffff;
    --color-surface-elevated: #fafafa;
    --color-text: #1a1a2e;
    --color-text-secondary: #6b7280;
    --color-primary: #4f46e5;
    --color-primary-dark: #4338ca;
    --color-accent: #0ea5e9;
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;
    --color-success: #10b981;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.04);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.08), 0 1px 2px -1px rgb(0 0 0 / 0.08);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.08);
    --radius: 8px;
    --radius-lg: 12px;
    --max-width: 1200px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4 {
    line-height: 1.2;
    font-weight: 600;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

p {
    color: var(--color-text-secondary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

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

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

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

/* Navigation */
.nav {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
    padding: 16px 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
}

/* Hero */
.hero {
    padding: 100px 0 80px;
    text-align: center;
}

.hero-badge {
    display: inline-block;
    background: linear-gradient(135deg, #4f46e5 0%, #0ea5e9 100%);
    color: white;
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero-title {
    max-width: 800px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    max-width: 700px;
    margin: 0 auto 40px;
    font-size: 1.25rem;
    color: var(--color-text-secondary);
}

.hero-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.hero-cta-note {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* Bullets */
.bullets {
    padding: 40px 0 80px;
}

.bullets-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.bullet {
    text-align: center;
    padding: 32px;
}

.bullet-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.bullet h3 {
    margin-bottom: 8px;
    color: var(--color-text);
}

@media (max-width: 768px) {
    .bullets-grid {
        grid-template-columns: 1fr;
    }
}

/* Positioning */
.positioning {
    padding: 80px 0;
    background: var(--color-surface-elevated);
}

.positioning-content {
    max-width: 800px;
    margin: 0 auto;
}

.positioning h2 {
    text-align: center;
    margin-bottom: 24px;
}

.positioning-lead {
    text-align: center;
    font-size: 1.25rem;
    margin-bottom: 16px;
}

.positioning p {
    text-align: center;
    margin-bottom: 48px;
}

.positioning-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 48px;
}

.comparison-box {
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
}

.comparison-box h4 {
    margin-bottom: 16px;
}

.comparison-traditional h4 {
    color: var(--color-text-secondary);
}

.comparison-voxa {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.06) 0%, rgba(14, 165, 233, 0.06) 100%);
    border-color: var(--color-primary);
}

.comparison-voxa h4 {
    color: var(--color-primary);
}

.comparison-box ul {
    list-style: none;
}

.comparison-box li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
    color: var(--color-text-secondary);
}

.comparison-box li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

@media (max-width: 768px) {
    .positioning-comparison {
        grid-template-columns: 1fr;
    }
}

/* Use Cases */
.use-cases {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 64px;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.use-case {
    background: var(--color-surface);
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: all 0.2s;
}

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

.use-case-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.use-case h3 {
    margin-bottom: 8px;
    color: var(--color-text);
}

@media (max-width: 992px) {
    .use-cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
}

/* Differentiator */
.differentiator {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--color-text) 0%, #2d2d44 100%);
    color: white;
}

.differentiator-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.differentiator-label {
    display: inline-block;
    background: rgba(255, 255, 255, 0.1);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 0.875rem;
    margin-bottom: 24px;
}

.differentiator h2 {
    font-size: 2.5rem;
    margin-bottom: 24px;
    color: white;
}

.differentiator-lead {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 48px;
}

.differentiator-examples {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.example {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px 24px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    gap: 12px;
}

.example p {
    color: white;
    margin: 0;
}

.example-x {
    color: #f87171;
    font-size: 1.25rem;
}

.example-check {
    color: #34d399;
    font-size: 1.25rem;
}

.example-arrow {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.5);
}

@media (max-width: 768px) {
    .differentiator-examples {
        flex-direction: column;
    }
    
    .example-arrow {
        transform: rotate(90deg);
    }
}

/* How It Works */
.how-it-works {
    padding: 80px 0;
    background: var(--color-surface-elevated);
}

.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.step {
    text-align: center;
    padding: 32px 24px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
}

.step-number {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.25rem;
    margin: 0 auto 16px;
}

.step h3 {
    margin-bottom: 8px;
    color: var(--color-text);
}

@media (max-width: 992px) {
    .steps {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .steps {
        grid-template-columns: 1fr;
    }
}

/* What's Included */
.included {
    padding: 80px 0;
}

.included-grid {
    max-width: 700px;
    margin: 0 auto;
}

.included-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    margin-bottom: 8px;
    background: var(--color-surface);
    border-radius: var(--radius);
    border: 1px solid var(--color-border-light);
    font-size: 1.1rem;
}

.included-check {
    color: var(--color-success);
    font-weight: 600;
}

/* KPI Value Reporting */
.kpi-reporting {
    padding: 80px 0;
    background: var(--color-surface-elevated);
}

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

.kpi-label {
    display: inline-block;
    margin-bottom: 16px;
    padding: 8px 14px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-primary);
    background: rgba(79, 70, 229, 0.1);
}

.kpi-reporting h2 {
    margin-bottom: 16px;
}

.kpi-lead {
    max-width: 700px;
    margin: 0 auto 40px;
    font-size: 1.15rem;
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.kpi-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: left;
}

.kpi-item h4 {
    margin-bottom: 8px;
    color: var(--color-text);
}

@media (max-width: 992px) {
    .kpi-grid {
        grid-template-columns: 1fr;
    }

    .kpi-item {
        text-align: center;
    }
}

/* Who Is It For */
.who-for {
    padding: 80px 0;
    background: var(--color-bg);
}

.who-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.who-card {
    padding: 32px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    box-shadow: var(--shadow-sm);
}

.who-card h4 {
    margin-bottom: 8px;
    color: var(--color-text);
}

@media (max-width: 768px) {
    .who-grid {
        grid-template-columns: 1fr;
    }
}

/* Trust */
.trust {
    padding: 80px 0;
    background: var(--color-surface-elevated);
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.trust-item {
    text-align: center;
    padding: 32px 24px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
}

.trust-item h4 {
    margin-bottom: 8px;
    color: var(--color-text);
}

@media (max-width: 992px) {
    .trust-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .trust-grid {
        grid-template-columns: 1fr;
    }
}

/* FAQ */
.faq {
    padding: 80px 0;
}

.faq-question:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: -2px;
    border-radius: var(--radius);
}

.faq-list {
    max-width: 700px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-question {
    width: 100%;
    padding: 24px 0;
    background: none;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-text);
    cursor: pointer;
    text-align: left;
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--color-primary);
    transition: transform 0.2s;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer p {
    padding-bottom: 24px;
    color: var(--color-text-secondary);
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

/* Final CTA */
.final-cta {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.final-cta h2 {
    color: white;
    margin-bottom: 16px;
}

.final-cta p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.25rem;
    margin-bottom: 32px;
}

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

.final-cta .btn-primary:hover {
    background: var(--color-bg);
}

.cta-note {
    margin-top: 24px !important;
    font-size: 1rem !important;
}

.cta-note a {
    color: white;
    text-decoration: underline;
}

/* Footer */
.footer {
    padding: 48px 0;
    background: var(--color-text);
    color: white;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.footer-brand .logo {
    color: white;
    margin-bottom: 8px;
    display: inline-block;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
}

.footer-contact a {
    color: white;
    text-decoration: none;
}

.footer-contact a:hover {
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
}

/* Responsive */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .btn-lg {
        padding: 14px 24px;
        font-size: 1rem;
    }
    
    section {
        padding: 60px 0 !important;
    }
}