/* ============================================================
   TELIC LABS — Main Stylesheet
   Dark, enterprise-grade design system
   ============================================================ */

:root {
  --bg-primary:    #060d1f;
  --bg-secondary:  #0d1a35;
  --bg-card:       #111f42;
  --bg-card-hover: #152348;
  --border:        rgba(37, 99, 235, 0.18);
  --border-bright: rgba(37, 99, 235, 0.45);
  --accent:        #2563eb;
  --accent-hover:  #1d4ed8;
  --accent-light:  rgba(37, 99, 235, 0.1);
  --accent-glow:   rgba(37, 99, 235, 0.25);
  --green:         #10b981;
  --text-primary:  #f1f5f9;
  --text-secondary:#94a3b8;
  --text-muted:    #64748b;
  --font-sans:     'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:     'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --radius:        8px;
  --radius-lg:     14px;
  --max-width:     1100px;
  --nav-height:    68px;
  --shadow-card:   0 4px 24px rgba(0,0,0,0.4), 0 1px 4px rgba(0,0,0,0.3);
  --shadow-glow:   0 0 40px rgba(37, 99, 235, 0.15);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: #60a5fa; }

img { max-width: 100%; height: auto; display: block; }

ul { list-style: none; }

/* ── Typography ───────────────────────────────────────────── */
h1, h2, h3, h4 {
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
h3 { font-size: 1.2rem; font-weight: 600; }

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

/* ── Layout Utilities ─────────────────────────────────────── */
.section-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-label {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 2.5rem;
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--accent-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-bright);
}
.btn-secondary:hover {
  background: var(--accent-light);
  color: var(--text-primary);
  border-color: var(--accent);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.btn-outline:hover {
  background: var(--accent);
  color: #fff;
}

.btn-lg { padding: 0.85rem 1.8rem; font-size: 1rem; }

/* ── Navigation ───────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 13, 31, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: var(--nav-height);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  gap: 0;
  text-decoration: none;
  flex-shrink: 0;
}
.logo-telic { color: var(--text-primary); }
.logo-labs  { color: var(--accent); }


.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius);
  transition: all 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--text-primary); background: var(--accent-light); }

.nav-links .btn-nav {
  color: #fff;
  background: var(--accent);
  padding: 0.45rem 1rem;
}
.nav-links .btn-nav:hover { background: var(--accent-hover); }

/* Hamburger — hidden on desktop */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: 0.3s;
}

/* ── Hero Section ─────────────────────────────────────────── */
.hero {
  min-height: calc(100vh - var(--nav-height));
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 5rem 1.5rem 4rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  background: var(--accent-light);
  border: 1px solid var(--border-bright);
  padding: 0.35rem 0.85rem;
  border-radius: 99px;
  margin-bottom: 1.5rem;
}
.hero-badge::before { content: '▸'; }

.hero-headline {
  font-size: clamp(2rem, 4.5vw, 3rem);
  line-height: 1.18;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #f1f5f9 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: 1.2rem;
  color: var(--text-secondary);
  font-weight: 400;
  margin-bottom: 2rem;
  line-height: 1.5;
}

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

/* Architecture diagram in hero */
.hero-diagram {
  display: flex;
  justify-content: center;
}

.diagram-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-card), var(--shadow-glow);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.diagram-node {
  background: var(--bg-secondary);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius);
  padding: 0.65rem 1rem;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  text-align: center;
  position: relative;
}

.node-top {
  background: rgba(37, 99, 235, 0.12);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

.node-mid {
  background: rgba(16, 185, 129, 0.1);
  border-color: var(--green);
  color: var(--green);
  font-weight: 600;
}

.diagram-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.node-sm {
  font-size: 0.75rem;
  padding: 0.5rem;
}

.diagram-flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}
.diagram-flow::before {
  content: '';
  width: 2px;
  height: 16px;
  background: var(--border-bright);
}
.diagram-flow::after {
  content: '';
  width: 2px;
  height: 16px;
  background: var(--border-bright);
}

/* ── Problem Section ──────────────────────────────────────── */
.problem-section {
  background: var(--bg-secondary);
  padding: 5rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.problem-card:hover {
  border-color: var(--border-bright);
  box-shadow: var(--shadow-glow);
}

.problem-icon { font-size: 1.75rem; margin-bottom: 1rem; }
.problem-card h3 { margin-bottom: 0.6rem; }
.problem-card p  { font-size: 0.92rem; }

/* ── Solution Section ─────────────────────────────────────── */
.solution-section { padding: 6rem 0; }

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

.solution-text h3 {
  font-size: 1.65rem;
  margin-bottom: 1rem;
}
.solution-text > p { margin-bottom: 1.5rem; }

.solution-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-bottom: 2rem;
}
.solution-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.92rem;
  color: var(--text-secondary);
}
.solution-list li::before {
  content: '▸';
  color: var(--green);
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 0.15em;
}

/* Architecture diagram in solution */
.arch-block {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-card), var(--shadow-glow);
}
.arch-block.arch-secure { border-color: var(--border-bright); }

.arch-label {
  display: block;
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
  text-align: center;
}

.arch-inner {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.arch-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.arch-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 0.85rem;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  text-align: center;
  line-height: 1.4;
}
.arch-item small { color: var(--text-muted); font-size: 0.72rem; display: block; }
.arch-wide { grid-column: span 2; }

/* ── Who We Serve ─────────────────────────────────────────── */
.serve-section {
  background: var(--bg-secondary);
  padding: 5rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.serve-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.serve-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: border-color 0.2s, transform 0.2s;
}
.serve-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-2px);
}
.serve-card h3 { font-size: 0.95rem; margin-bottom: 0.6rem; }
.serve-card p  { font-size: 0.875rem; }

/* ── CTA Section ──────────────────────────────────────────── */
.cta-section {
  padding: 6rem 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(37,99,235,0.12) 0%, transparent 70%);
}

.cta-inner {
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}
.cta-inner h2 { margin-bottom: 1rem; }
.cta-inner p  { margin-bottom: 2rem; font-size: 1.05rem; }

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Page Hero (inner pages) ──────────────────────────────── */
.page-hero {
  padding: 5rem 0 4rem;
  border-bottom: 1px solid var(--border);
  background: radial-gradient(ellipse at 50% 0%, rgba(37,99,235,0.08) 0%, transparent 60%);
}
.page-hero .section-container { max-width: 760px; }
.page-hero h1 { margin-bottom: 1rem; }
.page-hero .lead {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── About Page ───────────────────────────────────────────── */
.about-section { padding: 5rem 0; }
.about-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4rem;
  align-items: start;
}

.prose h2 { font-size: 1.45rem; margin: 2rem 0 0.75rem; color: var(--text-primary); }
.prose h3 { font-size: 1.05rem; margin: 1.5rem 0 0.5rem; color: var(--text-secondary); }
.prose p  { margin-bottom: 1rem; font-size: 0.97rem; }
.prose ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 0.75rem 0 1.25rem;
  padding-left: 0;
}
.prose ul li {
  display: flex;
  gap: 0.65rem;
  font-size: 0.93rem;
  color: var(--text-secondary);
}
.prose ul li::before {
  content: '▸';
  color: var(--accent);
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 0.2em;
}

.sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  position: sticky;
  top: calc(var(--nav-height) + 1.5rem);
}
.sidebar-card h3 {
  font-size: 1rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}
.contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.contact-label {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}
.contact-value {
  font-size: 0.9rem;
  color: var(--text-primary);
}
.contact-value a { color: var(--accent); }

.sidebar-card .btn { width: 100%; justify-content: center; }

/* Values strip */
.values-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 4rem 0;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.value-card {
  text-align: center;
  padding: 1.5rem;
}
.value-icon {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}
.value-card h3 { font-size: 1rem; margin-bottom: 0.5rem; }
.value-card p  { font-size: 0.875rem; }

/* ── Products / Pricing Page ──────────────────────────────── */
.pricing-section { padding: 5rem 0; }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  align-items: start;
  margin-bottom: 4rem;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.pricing-card:hover {
  border-color: var(--border-bright);
  box-shadow: var(--shadow-glow);
}

/* Highlight the featured (middle) card */
.pricing-card.featured {
  border-color: var(--accent);
  background: linear-gradient(160deg, rgba(37,99,235,0.1) 0%, var(--bg-card) 40%);
  position: relative;
  box-shadow: 0 0 0 1px var(--accent), var(--shadow-glow);
}

.pricing-badge {
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.3rem 1rem;
  border-radius: 0 0 var(--radius) var(--radius);
}

.pricing-tier {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.pricing-card h3 {
  font-size: 1.3rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}

.pricing-price {
  margin-bottom: 1.5rem;
}
.pricing-price .amount {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
}
.pricing-price .note {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: block;
  margin-top: 0.15rem;
}

.pricing-desc {
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-bottom: 2rem;
  flex: 1;
}
.feature-list li {
  display: flex;
  gap: 0.65rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  align-items: flex-start;
}
.feature-list li::before {
  content: '✓';
  color: var(--green);
  font-weight: 700;
  font-size: 0.8rem;
  flex-shrink: 0;
  margin-top: 0.1em;
}

.pricing-card .btn { width: 100%; justify-content: center; }

/* Comparison note below cards */
.pricing-note {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 4rem;
}
.pricing-note h3 {
  font-size: 1rem;
  margin-bottom: 0.75rem;
}
.pricing-note p { font-size: 0.9rem; }

/* FAQ section on products page */
.faq-section { padding: 0 0 5rem; }
.faq-section h2 {
  font-size: 1.4rem;
  margin-bottom: 2rem;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.6rem;
}
.faq-item h4 {
  font-size: 0.97rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.faq-item p {
  font-size: 0.875rem;
  line-height: 1.65;
}

/* ── Footer ───────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3.5rem 1.5rem 2rem;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
}

.footer-brand .nav-logo { margin-bottom: 0.75rem; }
.footer-brand p { font-size: 0.875rem; line-height: 1.6; }
.footer-tagline { color: var(--text-muted); font-size: 0.82rem; margin-top: 0.25rem; }

.footer-links h4 {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--text-primary); }

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-bottom p { font-size: 0.8rem; color: var(--text-muted); }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero              { grid-template-columns: 1fr; gap: 3rem; text-align: center; padding-top: 3rem; }
  .hero-cta          { justify-content: center; }
  .hero-diagram      { order: -1; }
  .problem-grid      { grid-template-columns: 1fr; }
  .solution-grid     { grid-template-columns: 1fr; gap: 2.5rem; }
  .serve-grid        { grid-template-columns: 1fr 1fr; }
  .pricing-grid      { grid-template-columns: 1fr; }
  .about-grid        { grid-template-columns: 1fr; gap: 2.5rem; }
  .sidebar-card      { position: static; }
  .values-grid       { grid-template-columns: 1fr; }
  .footer-container  { grid-template-columns: 1fr; gap: 1.5rem; }
}

@media (max-width: 640px) {
  .nav-toggle { display: flex; }
  .nav-links  {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1rem 1.5rem;
    gap: 0.25rem;
    align-items: flex-start;
  }
  .nav-open .nav-links { display: flex; }
  .nav-container       { position: relative; }
  .hero                { min-height: auto; padding-top: 2.5rem; }
  .serve-grid          { grid-template-columns: 1fr; }
  .footer-bottom       { flex-direction: column; gap: 0.5rem; text-align: center; }
}