/* ============================================================
   sections.css — Section-specific styling
   ============================================================ */

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-nav);
  padding-block: var(--space-4);
  background: rgba(250, 250, 247, 0);
  transition: background var(--t-base), backdrop-filter var(--t-base), padding var(--t-base);
}

.nav.is-scrolled {
  background: rgba(250, 250, 247, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--rule);
  padding-block: var(--space-3);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  color: var(--ink);
  text-transform: lowercase;
  transition: opacity var(--t-fast);
}
.wordmark:hover { opacity: 0.7; }

.wordmark-mark {
  width: 22px;
  height: 22px;
  border-radius: var(--r-sm);
  background: var(--ink);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.wordmark-mark::after {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--signal);
  border-radius: 50%;
  animation: pulse 2.4s ease-in-out infinite;
}

.nav-links {
  display: flex;
  gap: var(--space-6);
  font-size: var(--fs-sm);
  color: var(--ink-soft);
}
.nav-links a {
  transition: color var(--t-fast);
  position: relative;
  padding: 4px 0;
}
.nav-links a:hover { color: var(--ink); }

@media (max-width: 820px) {
  .nav-links { display: none; }
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding-block: clamp(140px, 18vw, 200px) var(--space-10);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-9);
  align-items: center;
}

@media (max-width: 980px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: 8px 14px;
  border: 1px solid var(--rule-strong);
  border-radius: var(--r-pill);
  background: var(--canvas);
  margin-bottom: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wider);
  color: var(--ink-soft);
  text-transform: uppercase;
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--fs-display);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  font-weight: 600;
  color: var(--ink);
  margin-bottom: var(--space-6);
  max-width: 18ch;
}

.hero-title em {
  color: var(--signal);
  display: inline-block;
}

.hero-sub {
  font-size: var(--fs-md);
  line-height: var(--leading-relaxed);
  color: var(--ink-soft);
  margin-bottom: var(--space-7);
  max-width: 52ch;
}

.hero-sub strong {
  color: var(--ink);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  gap: var(--space-3);
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
}

.hero-meta {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  padding-top: var(--space-6);
  border-top: 1px solid var(--rule);
}

.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hero-meta-label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--ink-mute);
}

.hero-meta-value {
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--ink);
  letter-spacing: var(--tracking-snug);
}

.hero-meta-value em {
  color: var(--signal);
  font-style: italic;
  font-family: var(--font-serif);
  font-weight: 400;
}

/* Hero terminal demo */
.terminal {
  background: var(--code-bg);
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.04) inset,
    0 30px 60px -30px rgba(10, 10, 10, 0.35),
    0 10px 30px -10px rgba(10, 10, 10, 0.2);
  font-family: var(--font-mono);
  position: relative;
}

.terminal-head {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wider);
  color: var(--code-mute);
  text-transform: uppercase;
}

.terminal-dots { display: flex; gap: 6px; }
.terminal-dots span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
}

.terminal-title {
  margin-left: var(--space-3);
  font-size: var(--fs-xs);
  color: var(--code-mute);
}

.terminal-body {
  padding: 22px 24px;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--code-text);
  min-height: 320px;
}

.terminal-line {
  white-space: pre-wrap;
  word-break: break-word;
}

.terminal-cursor {
  display: inline-block;
  width: 8px;
  height: 1.05em;
  background: var(--code-accent);
  vertical-align: text-bottom;
  margin-left: 2px;
  animation: blink 1s step-end infinite;
}

@keyframes blink { 50% { opacity: 0; } }

/* ============================================================
   STACK STRIP (logos under hero)
   ============================================================ */
.stack-strip {
  padding-block: var(--space-7);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: var(--canvas-alt);
  overflow: hidden;
}

.stack-strip-inner {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
  justify-content: center;
}

.stack-strip-label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-right: var(--space-5);
}

.stack-item {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--ink-soft);
  letter-spacing: var(--tracking-snug);
  transition: color var(--t-fast);
}
.stack-item:hover { color: var(--ink); }

/* ============================================================
   PROBLEM SECTION
   ============================================================ */
.problem {
  background: var(--canvas);
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-9);
  align-items: start;
}

@media (max-width: 880px) {
  .problem-grid { grid-template-columns: 1fr; gap: var(--space-7); }
}

.problem-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: var(--fs-2xl);
  line-height: 1.15;
  color: var(--ink);
  letter-spacing: var(--tracking-tight);
  font-weight: 400;
  position: relative;
  padding-left: var(--space-5);
  border-left: 2px solid var(--signal);
}

.problem-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  font-size: var(--fs-md);
  color: var(--ink-soft);
  line-height: var(--leading-relaxed);
}
.problem-body strong { color: var(--ink); font-weight: 600; }

/* ============================================================
   PROCESS (4-step)
   ============================================================ */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--canvas);
}

@media (max-width: 880px) {
  .process-steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 540px) {
  .process-steps { grid-template-columns: 1fr; }
}

.process-step {
  padding: var(--space-6);
  border-right: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  background: var(--canvas);
  transition: background var(--t-base);
  position: relative;
}

.process-step:last-child { border-right: 0; }

@media (max-width: 880px) {
  .process-step:nth-child(2n) { border-right: 0; }
  .process-step:nth-child(-n+2) { border-bottom: 1px solid var(--rule); }
}
@media (max-width: 540px) {
  .process-step { border-right: 0; border-bottom: 1px solid var(--rule); }
  .process-step:last-child { border-bottom: 0; }
}

.process-step:hover {
  background: var(--canvas-alt);
}

.process-step-num {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 64px;
  line-height: 1;
  color: var(--signal);
  font-weight: 400;
}

.process-step-title {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 600;
  letter-spacing: var(--tracking-snug);
  color: var(--ink);
}

.process-step-body {
  font-size: var(--fs-sm);
  color: var(--ink-soft);
  line-height: var(--leading-relaxed);
}

.process-step-time {
  margin-top: auto;
  padding-top: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* ============================================================
   ARCHITECTURE / TECH SECTION
   ============================================================ */
.tech-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-9);
  align-items: start;
}

@media (max-width: 980px) {
  .tech-grid { grid-template-columns: 1fr; gap: var(--space-7); }
}

.tech-list {
  display: flex;
  flex-direction: column;
}

.tech-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: var(--space-5);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--rule);
}

.tech-item:first-child { border-top: 1px solid var(--rule); }

.tech-item-label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--ink-mute);
  padding-top: 4px;
}

.tech-item-content strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--fs-base);
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 2px;
}

.tech-item-content p {
  font-size: var(--fs-sm);
  color: var(--ink-soft);
  margin: 0;
}

/* ============================================================
   PROOF (case studies / demos)
   ============================================================ */
.proof-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

@media (max-width: 880px) {
  .proof-grid { grid-template-columns: 1fr; }
}

.proof-card {
  padding: var(--space-7) var(--space-6);
  background: var(--canvas);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: all var(--t-base);
  position: relative;
  overflow: hidden;
}
.proof-card:hover {
  border-color: var(--ink);
  transform: translateY(-2px);
}

.proof-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-2);
}

.proof-card-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--signal-deep);
  font-weight: 500;
}
.proof-card-status::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--signal);
  border-radius: 50%;
  animation: pulse 2.4s ease-in-out infinite;
}

.proof-card-domain {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--ink-mute);
  letter-spacing: var(--tracking-wide);
}

.proof-card-title {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  color: var(--ink);
  line-height: var(--leading-snug);
}

.proof-card-body {
  font-size: var(--fs-sm);
  color: var(--ink-soft);
  line-height: var(--leading-relaxed);
  flex-grow: 1;
}

.proof-card-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: var(--space-4);
  border-top: 1px dashed var(--rule-strong);
  margin-top: var(--space-2);
}

.proof-card-stack span {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wide);
  padding: 3px 8px;
  background: var(--canvas-alt);
  border: 1px solid var(--rule);
  border-radius: var(--r-sm);
  color: var(--ink-soft);
}

.proof-card-link {
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  align-self: flex-start;
  transition: all var(--t-fast);
}
.proof-card:hover .proof-card-link {
  color: var(--signal);
  border-color: var(--signal);
}

/* ============================================================
   FINAL CTA
   ============================================================ */
.final-cta {
  background: var(--ink);
  color: var(--canvas);
  padding-block: clamp(100px, 14vw, 200px);
  position: relative;
  overflow: hidden;
}

.final-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(255, 92, 40, 0.18) 0%, transparent 60%);
  pointer-events: none;
}

.final-cta-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-9);
  align-items: center;
  position: relative;
}

@media (max-width: 980px) {
  .final-cta-grid { grid-template-columns: 1fr; gap: var(--space-7); }
}

.final-cta .section-eyebrow {
  color: var(--signal);
}

.final-cta .section-eyebrow::before {
  background: var(--signal);
}

.final-cta-title {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  font-weight: 600;
  color: var(--canvas);
  margin-bottom: var(--space-6);
  max-width: 18ch;
}
.final-cta-title em {
  color: var(--signal);
  font-family: var(--font-serif);
  font-weight: 400;
}

.final-cta-sub {
  font-size: var(--fs-md);
  color: rgba(232, 232, 226, 0.75);
  line-height: var(--leading-relaxed);
  max-width: 52ch;
  margin-bottom: var(--space-7);
}
.final-cta-sub strong { color: var(--canvas); font-weight: 600; }

.final-cta-sub-soft {
  opacity: 0.65;
  font-size: var(--fs-base);
}

.final-cta-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--r-md);
  padding: var(--space-6);
  backdrop-filter: blur(8px);
}

.final-cta-person {
  display: flex;
  gap: var(--space-4);
  align-items: center;
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.final-cta-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--signal);
  color: var(--canvas);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  letter-spacing: 0;
}

.final-cta-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-base);
  color: var(--canvas);
  letter-spacing: var(--tracking-snug);
  margin-bottom: 2px;
}

.final-cta-role {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wide);
  color: rgba(232, 232, 226, 0.6);
  text-transform: uppercase;
}

.final-cta .btn-signal {
  width: 100%;
  justify-content: center;
}

.final-cta-fineprint {
  margin-top: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wide);
  color: rgba(232, 232, 226, 0.5);
  text-transform: uppercase;
  text-align: center;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--canvas);
  padding-block: var(--space-7);
  border-top: 1px solid var(--rule);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-5);
  flex-wrap: wrap;
}

.footer-tag {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wide);
  color: var(--ink-mute);
  text-transform: uppercase;
}

.footer-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: right;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wide);
  color: var(--ink-mute);
}

.footer-meta a {
  color: var(--signal-deep);
  transition: opacity var(--t-fast);
}
.footer-meta a:hover { opacity: 0.7; }

@media (max-width: 600px) {
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-meta { text-align: left; }
}