:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a28;
    --bg-card-hover: #222235;
    --text-primary: #e8e8f0;
    --text-secondary: #9898b0;
    --text-muted: #6868808;
    --accent: #4f7cff;
    --accent-glow: rgba(79, 124, 255, 0.15);
    --accent-secondary: #00d4aa;
    --border: #2a2a3a;
    --radius: 12px;
    --radius-sm: 8px;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    scroll-behavior: smooth;
}

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

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--accent-secondary);
}

/* ============ HEADER ============ */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
}

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

.brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 0.15em;
    text-decoration: none;
}

.brand:hover {
    color: var(--accent);
}

.brand-icon {
    color: var(--accent);
    font-size: 1.3rem;
}

.main-nav {
    display: flex;
    gap: 2rem;
}

.main-nav a, .main-nav ::deep a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    transition: color 0.2s;
    padding: 0.4rem 0;
}

.main-nav a:hover, .main-nav ::deep a:hover,
.main-nav ::deep a.active {
    color: var(--accent);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ============ HERO ============ */

.hero {
    padding: 8rem 0 6rem;
    background: radial-gradient(ellipse at 30% 50%, var(--accent-glow) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(0, 212, 170, 0.08) 0%, transparent 50%);
}

.hero-content {
    max-width: 700px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 2.5rem;
}

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

.page-hero {
    padding: 6rem 0 3rem;
    background: radial-gradient(ellipse at 50% 80%, var(--accent-glow) 0%, transparent 50%);
}

.page-hero h1 {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 0.8rem;
}

.page-hero .hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
}

/* ============ BUTTONS ============ */

.btn-primary {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    padding: 0.85rem 2rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: #3a65e0;
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(79, 124, 255, 0.3);
}

.btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--text-primary);
    padding: 0.85rem 2rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    border: 1px solid var(--border);
    transition: all 0.2s;
    cursor: pointer;
}

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ============ FEATURES ============ */

.features {
    padding: 5rem 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem 2rem;
    transition: all 0.3s;
}

.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ============ PROBLEM SECTION ============ */

.problem-section {
    padding: 5rem 0;
    background: var(--bg-secondary);
}

.split-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: start;
}

.section-subtitle {
    font-size: 1.15rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
}

.problem-list {
    list-style: none;
    padding: 0;
}

.problem-list li {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
    line-height: 1.6;
}

.problem-list li strong {
    color: var(--text-primary);
}

.split-visual {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1.5rem 2rem;
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent);
    line-height: 1.2;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* ============ CTA ============ */

.cta-section {
    padding: 5rem 0;
    text-align: center;
}

.cta-section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.cta-section p {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem;
}

/* ============ CONTENT SECTIONS ============ */

.content-section {
    padding: 4rem 0;
}

.content-narrow {
    max-width: 800px;
}

.content-narrow h2, .content-section h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    margin-top: 3rem;
}

.content-narrow h2:first-child {
    margin-top: 0;
}

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

.approach-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.approach-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1.5rem;
}

.approach-item h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--accent);
}

.approach-item p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
}

.market-list {
    list-style: none;
    padding: 0;
}

.market-list li {
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}

.market-list li strong {
    color: var(--text-primary);
}

/* ============ PRODUCTS ============ */

.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 3rem;
    margin-bottom: 2rem;
    transition: border-color 0.3s;
}

.product-card:hover {
    border-color: var(--accent);
}

.product-card.featured {
    border-color: var(--accent);
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(79, 124, 255, 0.05) 100%);
}

.product-badge {
    display: inline-block;
    background: var(--accent-glow);
    color: var(--accent);
    padding: 0.3rem 0.8rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.product-info h2 {
    font-size: 1.6rem;
    margin-bottom: 0.8rem;
    margin-top: 0;
}

.product-info > p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 700px;
}

.product-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.pf-item strong {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

.pf-item span {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.dev-stage {
    display: inline-block;
    color: var(--accent-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.4rem 1rem;
    border: 1px solid rgba(0, 212, 170, 0.3);
    border-radius: 4px;
}

/* ============ TEAM ============ */

.team-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.team-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem;
    text-align: center;
}

.team-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), #3a65e0);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    margin: 0 auto 1.2rem;
}

.team-avatar.accent {
    background: linear-gradient(135deg, var(--accent-secondary), #00a080);
}

.team-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.3rem;
}

.team-role {
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 600;
    display: block;
    margin-bottom: 1rem;
}

.team-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-align: left;
    margin-bottom: 1.2rem;
}

.team-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.team-skills span {
    background: var(--accent-glow);
    color: var(--accent);
    padding: 0.25rem 0.7rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* ============ CONTACT ============ */

.contact-grid {
    max-width: 600px;
}

.contact-details {
    margin: 2rem 0;
}

.contact-item {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}

.contact-item strong {
    display: block;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    margin-bottom: 0.3rem;
}

.contact-item a, .contact-item span {
    font-size: 1.05rem;
}

.contact-interests {
    margin-top: 2.5rem;
}

.contact-interests h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.contact-interests ul {
    list-style: none;
    padding: 0;
}

.contact-interests li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    padding-left: 1.2rem;
    position: relative;
}

.contact-interests li::before {
    content: "◆";
    color: var(--accent);
    position: absolute;
    left: 0;
    font-size: 0.6rem;
    top: 0.7rem;
}

/* ============ FOOTER ============ */

.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 4rem 0 2rem;
    margin-top: 4rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand .brand-icon, .footer-brand .brand-text {
    font-size: 1rem;
    letter-spacing: 0.15em;
    font-weight: 700;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 0.8rem;
}

.footer-links h4, .footer-contact h4 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.footer-links a {
    display: block;
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 0.3rem 0;
}

.footer-links a:hover {
    color: var(--accent);
}

.footer-contact p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* ============ RESPONSIVE ============ */

@media (max-width: 768px) {
    .hero h1 { font-size: 2.2rem; }
    .page-hero h1 { font-size: 2rem; }
    .hero { padding: 5rem 0 3rem; }
    .features-grid { grid-template-columns: 1fr; }
    .split-content { grid-template-columns: 1fr; gap: 2rem; }
    .product-features { grid-template-columns: 1fr; }
    .team-grid { grid-template-columns: 1fr; }
    .approach-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
    .hero-actions { flex-direction: column; }

    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: 1rem 2rem;
        gap: 0.5rem;
    }

    .main-nav.open { display: flex; }
    .mobile-toggle { display: block; }
}

/* ============ BLAZOR OVERRIDES ============ */

.blazor-error-boundary {
    background: #b32121;
    padding: 1rem;
    color: white;
}

#blazor-error-ui {
    background: #b32121;
    color: white;
    padding: 0.5rem 1.5rem;
    position: fixed;
    bottom: 0;
    width: 100%;
    z-index: 1000;
    display: none;
}