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

/* ─── Tokens ─────────────────────────────────────────── */
:root {
  --bg:          #09090b;
  --surface:     #18181b;
  --border:      #27272a;
  --text:        #fafafa;
  --muted:       #a1a1aa;
  --accent:      #818cf8;
  --accent-deep: #6366f1;
  --radius:      6px;
  --max-w:       1100px;
}

/* ─── Base ───────────────────────────────────────────── */
html { scroll-behavior: smooth; background: var(--bg); }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* ─── Nav ────────────────────────────────────────────── */
#nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 9, 11, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-logo {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  gap: 1.75rem;
}

.nav-link {
  font-size: 0.875rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s;
}
.nav-link:hover,
.nav-link--active { color: var(--text); }

@media (max-width: 640px) {
  .nav-links { display: none; }
}

/* ─── Buttons ────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius);
  font-family: inherit;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
  line-height: 1;
}

.btn-primary {
  background: var(--accent);
  color: #0a0a14;
  padding: 0.65rem 1.35rem;
  font-size: 0.9rem;
}
.btn-primary:hover { background: var(--accent-deep); color: #fff; }

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border-color: var(--border);
  padding: 0.65rem 1.35rem;
  font-size: 0.9rem;
}
.btn-ghost:hover { color: var(--text); border-color: var(--muted); }

.btn-sm { padding: 0.45rem 1rem; font-size: 0.85rem; }
.btn-lg { padding: 0.85rem 2rem; font-size: 1rem; }

/* ─── Hero ───────────────────────────────────────────── */
#hero {
  padding: clamp(4rem, 8vw, 7rem) 0 clamp(3rem, 5vw, 4.5rem);
  background: radial-gradient(
    ellipse 80% 50% at 50% -5%,
    rgba(129, 140, 248, 0.10),
    transparent 70%
  );
}

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

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

#hero h1 {
  font-size: clamp(2.2rem, 5.5vw, 3.75rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.subheadline {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 2.5rem;
}

.cta-group {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ─── Proof bar ──────────────────────────────────────── */
#proof {
  padding: 2.25rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.proof-label {
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-align: center;
  margin-bottom: 1.25rem;
}

.proof-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 3rem;
  flex-wrap: wrap;
}

.proof-logos span {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ─── Sections (pending content) ────────────────────── */
#problem, #services, #cases, #about {
  padding: clamp(3rem, 5vw, 4.5rem) 0;
}


/* ─── Contact ────────────────────────────────────────── */
#contact {
  padding: clamp(3rem, 5vw, 4.5rem) 0;
  border-top: 1px solid var(--border);
}

.contact-inner {
  text-align: center;
  max-width: 620px;
  margin: 0 auto;
}

#contact h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 1rem;
}

#contact .subheadline { margin-bottom: 2rem; }

/* ─── Footer ─────────────────────────────────────────── */
#footer {
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--muted);
}

.footer-link {
  font-size: 0.8rem;
  color: var(--muted);
  text-decoration: none;
}
.footer-link:hover { color: var(--text); }

/* ─── Section shared ─────────────────────────────────── */
.section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin-bottom: 3rem;
}

/* ─── Problem ─────────────────────────────────────────── */
.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.pain-card {
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.pain-number {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.06em;
  margin-bottom: 0.875rem;
}

.pain-card h3 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.35;
  margin-bottom: 0.625rem;
}

.pain-desc {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.65;
}

/* ─── Services ────────────────────────────────────────── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  align-items: start;
}

.service-card {
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.service-card--featured {
  border-color: var(--accent);
  background: rgba(129, 140, 248, 0.06);
}

.service-tag {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.service-card--featured .service-tag { color: var(--accent); }

.service-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.3;
}

.service-desc {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.65;
  flex-grow: 1;
}

/* ─── Responsive ─────────────────────────────────────── */
@media (max-width: 768px) {
  .pain-grid,
  .services-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .cta-group { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }
  .proof-logos { gap: 1.5rem; }
}

/* ─── Cases Tabs ─────────────────────────────────────────── */
.cases-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.cases-tabs::-webkit-scrollbar { display: none; }

.tab-btn {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 0.625rem 1.1rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  margin-bottom: -1px;
  white-space: nowrap;
}
.tab-btn:hover { color: var(--text); }
.tab-btn--active { color: var(--text); border-bottom-color: var(--accent); }

.tab-panel { display: none; }
.tab-panel--active { display: block; }

/* ─── Cases ──────────────────────────────────────────────── */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.case-card {
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.case-sector {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.case-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.3;
}

.case-body {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.65;
  flex-grow: 1;
}

.case-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: auto;
  padding-top: 0.875rem;
}

.case-tech span,
.case-tech a {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--muted);
  background: rgba(129, 140, 248, 0.07);
  border: 1px solid rgba(129, 140, 248, 0.18);
  border-radius: 3px;
  padding: 0.2rem 0.5rem;
  text-decoration: none;
}
.case-tech a:hover {
  color: var(--accent);
  border-color: rgba(129, 140, 248, 0.5);
}

.case-result {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.case-result span {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--accent);
}

/* ─── Cases Note ─────────────────────────────────────────── */
.cases-note {
  margin-top: 2.5rem;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  background: rgba(129, 140, 248, 0.04);
}

.cases-note__lead {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.35rem;
}

.cases-note p:last-child {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.65;
}

/* ─── About ──────────────────────────────────────────────── */
.about-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4rem;
  align-items: center;
}

.about-text .section-title { margin-bottom: 1.5rem; }

.about-body {
  font-size: 1rem;
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 1rem;
}

.about-body:last-of-type { margin-bottom: 0; }

.about-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1.25rem;
}

.about-stack span,
.about-stack a {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--muted);
  background: rgba(129, 140, 248, 0.07);
  border: 1px solid rgba(129, 140, 248, 0.2);
  border-radius: 3px;
  padding: 0.22rem 0.6rem;
  text-decoration: none;
}
.about-stack a:hover {
  color: var(--accent);
  border-color: rgba(129, 140, 248, 0.5);
}

.about-creds {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.cred-number {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--text);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.cred-label {
  font-size: 0.8rem;
  color: var(--muted);
}

/* ─── Responsive (cases + about) ─────────────────────────── */
@media (max-width: 768px) {
  .cases-grid { grid-template-columns: 1fr; }
  .about-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .about-creds { flex-direction: row; flex-wrap: wrap; gap: 1.5rem; }
}