/* ===================================
   CSS Custom Properties (Variables)
   =================================== */
:root {
    /* Colors */
    --color-bg: #0a0a0a;
    --color-bg-elevated: #141414;
    --color-bg-subtle: #1a1a1a;
    --color-text: #ffffff;
    --color-text-muted: #a0a0a0;
    --color-text-dim: #707070;
    --color-accent: #dc2626;
    --color-accent-hover: #ef4444;
    --color-border: #2a2a2a;
    --color-border-hover: #dc2626;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;

    /* Typography */
    --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", Menlo, Monaco, Consolas, "Courier New", monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-base);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* CSS Texture: subtle noise effect using gradients */
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(220, 38, 38, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(220, 38, 38, 0.02) 0%, transparent 50%),
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255, 255, 255, 0.01) 2px, rgba(255, 255, 255, 0.01) 4px);
    background-attachment: fixed;
}

/* ===================================
   Accessibility
   =================================== */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--color-accent);
    color: var(--color-text);
    padding: var(--space-sm) var(--space-md);
    text-decoration: none;
    font-weight: 600;
    z-index: 100;
}

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

/* Focus visible styles for better keyboard navigation */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
}

/* ===================================
   Container
   =================================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ===================================
   Header / Navigation
   =================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background-color: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
}

.logo {
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

.nav-links {
    display: flex;
    gap: var(--space-lg);
}

.nav-links a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

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

/* ===================================
   Hero Section
   =================================== */
.hero {
    padding: var(--space-3xl) 0;
    text-align: center;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    background: var(--color-bg-subtle);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
    font-weight: 500;
}

.status-dot {
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(220, 38, 38, 0.6);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, #ffffff 0%, #d0d0d0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    max-width: 700px;
    margin: 0 auto var(--space-xl);
    font-size: clamp(1rem, 2vw, 1.125rem);
    line-height: 1.7;
    color: var(--color-text-muted);
}

.cta-group {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-xl);
}

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9375rem;
    transition: all 0.2s ease;
    cursor: pointer;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-text);
    box-shadow: 0 4px 14px rgba(220, 38, 38, 0.3);
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    box-shadow: 0 6px 20px rgba(220, 38, 38, 0.4);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-text-muted);
    background: var(--color-bg-subtle);
}

/* Trust Chips */
.trust-chips {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--space-2xl);
}

.chip {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.chip-icon {
    width: 18px;
    height: 18px;
    color: var(--color-accent);
}

/* ===================================
   Sections
   =================================== */
section {
    padding: var(--space-3xl) 0;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    text-align: center;
    margin-bottom: var(--space-sm);
}

.section-intro {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 1.0625rem;
    margin-bottom: var(--space-2xl);
}

/* ===================================
   Capabilities Section
   =================================== */
.capabilities {
    background: var(--color-bg-elevated);
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.capability-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all 0.3s ease;
    position: relative;
}

.capability-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    padding: 1px;
    background: linear-gradient(135deg, transparent, var(--color-accent));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.capability-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(220, 38, 38, 0.15);
}

.capability-card:hover::before {
    opacity: 1;
}

.card-icon {
    width: 32px;
    height: 32px;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
    stroke-width: 1.5;
}

.capability-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.capability-card p {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* ===================================
   What We Deliver Section
   =================================== */
.what-we-deliver {
    background: var(--color-bg);
}

.outcomes-content {
    max-width: 900px;
    margin: 0 auto;
}

.outcomes-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.outcomes-list li {
    padding: var(--space-md);
    background: var(--color-bg-elevated);
    border-left: 3px solid var(--color-accent);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--color-text-muted);
}

.outcomes-list strong {
    color: var(--color-text);
    font-weight: 600;
}

/* ===================================
   How We Work Section
   =================================== */
.how-we-work {
    background: var(--color-bg-elevated);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
    max-width: 1000px;
    margin: 0 auto;
}

.process-step {
    text-align: center;
    padding: var(--space-xl) var(--space-md);
}

.step-number {
    display: inline-block;
    width: 60px;
    height: 60px;
    line-height: 60px;
    border-radius: 50%;
    background: var(--color-bg);
    border: 2px solid var(--color-accent);
    color: var(--color-accent);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.process-step h3 {
    font-size: 1.375rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.process-step p {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* ===================================
   Verification Section
   =================================== */
.verification {
    background: var(--color-bg);
}

.identity-block {
    max-width: 800px;
    margin: 0 auto;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
}

.identity-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.identity-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.identity-label {
    font-size: 0.8125rem;
    color: var(--color-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.identity-value {
    font-size: 1rem;
    color: var(--color-text);
    font-weight: 500;
}

.identity-note {
    padding: var(--space-md);
    background: var(--color-bg);
    border-left: 3px solid var(--color-accent);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.privacy-note {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--color-text-dim);
}

.privacy-icon {
    width: 16px;
    height: 16px;
    color: var(--color-text-dim);
    flex-shrink: 0;
}

/* ===================================
   Footer
   =================================== */
.site-footer {
    padding: var(--space-2xl) 0;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-elevated);
    text-align: center;
}

.footer-text {
    font-size: 0.9375rem;
    margin-bottom: var(--space-xs);
}

.footer-legal {
    font-size: 0.8125rem;
    color: var(--color-text-dim);
}

.footer-registration {
    font-size: 0.75rem;
    color: var(--color-text-dim);
    opacity: 0.6;
    margin-top: var(--space-sm);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
        --space-3xl: 3rem;
    }

    .main-nav {
        flex-direction: column;
        gap: var(--space-md);
        align-items: flex-start;
    }

    .nav-links {
        gap: var(--space-md);
    }

    .hero {
        padding: var(--space-2xl) 0;
    }

    .cta-group {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .trust-chips {
        flex-direction: column;
        align-items: stretch;
    }

    .capabilities-grid {
        grid-template-columns: 1fr;
    }

    .process-steps {
        grid-template-columns: 1fr;
    }

    .identity-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .identity-block {
        padding: var(--space-md);
    }
}