/* ═══════════════════════════════════════════════════════════════
   419 Technology | site styles
   Hunter green on a light base, JetBrains Mono details.
   Canonical spec: design handoff "hunter-green-light" (2026-07).
   The hero terminal panel stays dark in every mode by design.
   ═══════════════════════════════════════════════════════════════ */

:root {
  --bg:        #f6f8fb;   /* page background */
  --bg-alt:    #eceff4;   /* alternating section (Work) */
  --bg-card:   #ffffff;   /* cards, form */
  --bg-deep:   #e7ebf1;   /* reserved */

  --ink:       #0f1720;   /* primary text / headings */
  --ink-2:     #4b5563;   /* body / secondary */
  --ink-3:     #7c8695;   /* muted labels, captions */

  --line:      #dde3ea;   /* borders, dividers */
  --line-2:    #e7ebf1;   /* lighter dividers, nav border */

  --accent:      #2f8d5b; /* hunter green */
  --accent-2:    #3fa971; /* hover / lighter green */
  --accent-soft: rgba(63, 169, 113, 0.14);
  --glow:        rgba(63, 169, 113, 0.10);
  --cta-ink:     #ffffff; /* text on accent buttons */
  --on-accent:   #ffffff; /* text on the 419 mark */
  --nav-bg:      rgba(246, 248, 251, 0.85);

  /* terminal panel literals (dark in every mode) */
  --term-bg:     #0b0f16;
  --term-head:   #0d1117;
  --term-line:   #232c3a;
  --term-line-2: #1a212d;
  --term-chip:   #11161f;
  --term-mute:   #6b7686;
  --term-text:   #a8b3c2;
  --term-ok:     #57c088;
  --term-dim:    #3a4453;

  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --container: 68rem;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Type ─────────────────────────────────────── */

h1 {
  font-size: clamp(2.6rem, 4.4vw, 3.9rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

h3 {
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.kicker {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.kicker::before {
  content: "// ";
  color: var(--ink-3);
}

.section-sub {
  color: var(--ink-2);
  font-size: 1.05rem;
  max-width: 44rem;
  margin-top: 1rem;
}

/* ── Motion ───────────────────────────────────── */

@keyframes glowDrift {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(-3%, 2%) scale(1.08); }
  100% { transform: translate(0, 0) scale(1); }
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 var(--accent-soft); }
  50%      { opacity: 0.55; box-shadow: 0 0 0 5px transparent; }
}

@keyframes blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }

/* Section reveal: JS adds .in via IntersectionObserver */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s cubic-bezier(0.2, 0.7, 0.2, 1),
              transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .glow, .dot-pulse, .cursor { animation: none !important; }
}

/* ── Nav ──────────────────────────────────────── */

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-2);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
}

/* 4|1|9 pipes mark: bold ink digits, thin accent pipes (unix pipes) */
.brand-mark {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.1rem;
  line-height: 1;
  color: var(--ink);
}

.brand-mark .pipe {
  font-weight: 400;
  color: var(--accent);
}

.brand-name {
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

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

.nav-links a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.15s;
}

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

.nav-cta {
  color: var(--accent) !important;
  font-weight: 600 !important;
  border: 1px solid var(--line);
  padding: 0.4rem 0.9rem;
  border-radius: 8px;
  transition: border-color 0.15s, background 0.15s;
}

.nav-cta:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

/* ── Buttons ──────────────────────────────────── */

.btn {
  display: inline-block;
  font-weight: 600;
  font-size: 0.98rem;
  text-decoration: none;
  padding: 0.8rem 1.6rem;
  border-radius: 10px;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--accent);
  color: var(--cta-ink);
}

.btn-primary:hover { background: var(--accent-2); }

.btn-ghost {
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn-ghost:hover { border-color: var(--ink-3); }

/* ── Hero ─────────────────────────────────────── */

.hero {
  position: relative;
  padding: 6rem 0 5rem;
  overflow: hidden;
}

.hero .glow {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(48rem 30rem at 82% -6%, var(--glow), transparent 62%),
    radial-gradient(38rem 24rem at 6% 118%, var(--glow), transparent 60%);
  animation: glowDrift 18s ease-in-out infinite;
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3rem;
  align-items: center;
}

.hero-sub {
  color: var(--ink-2);
  font-size: 1.12rem;
  max-width: 34rem;
  margin-top: 1.5rem;
}

.hero-actions {
  display: flex;
  gap: 0.9rem;
  margin-top: 2.25rem;
  flex-wrap: wrap;
}

/* terminal panel (stays dark by design) */

.term {
  background: var(--term-bg);
  border: 1px solid var(--term-line);
  border-radius: 14px;
  box-shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.7);
  overflow: hidden;
}

.term-head {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--term-line-2);
  background: var(--term-head);
}

.dot-pulse {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent-2);
  animation: pulseDot 2.4s ease-in-out infinite;
}

.term-title {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--term-mute);
}

.term-pill {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--accent-2);
  border: 1px solid var(--term-line);
  padding: 0.1rem 0.4rem;
  border-radius: 5px;
}

.term-body {
  padding: 1rem 1.1rem;
  font-family: var(--mono);
  font-size: 0.76rem;
  line-height: 1.85;
  color: var(--term-mute);
}

.term-body .p  { color: var(--accent-2); }
.term-body .ok { color: var(--term-ok); }
.term-body .t  { color: var(--term-text); }
.term-body .d  { color: var(--term-dim); }

.cursor {
  color: var(--accent-2);
  animation: blink 1.1s step-end infinite;
}

.term-foot {
  display: flex;
  gap: 0.4rem;
  padding: 0.9rem 1.1rem;
  border-top: 1px solid var(--term-line-2);
}

.term-chip {
  flex: 1;
  text-align: center;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--term-text);
  background: var(--term-chip);
  border: 1px solid var(--term-line);
  border-radius: 7px;
  padding: 0.4rem 0;
}

/* ── Sections ─────────────────────────────────── */

.section { padding: 5.5rem 0; }

.section-alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--line-2);
  border-bottom: 1px solid var(--line-2);
}

/* ── Cards / grids ────────────────────────────── */

.grid {
  display: grid;
  gap: 1.1rem;
  margin-top: 2.75rem;
}

.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }

.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.5rem;
  transition: border-color 0.15s, transform 0.15s;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.card h3 { margin-bottom: 0.55rem; }

.card p {
  color: var(--ink-2);
  font-size: 0.9rem;
}

.card-tag {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.card-tag .sq {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 3px;
  background: var(--accent);
}

.card-tag .lbl {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ── Work cards ───────────────────────────────── */

.work-card {
  display: flex;
  flex-direction: column;
  padding: 1.6rem;
}

.work-card h3 {
  font-size: 1.22rem;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 0.6rem;
}

.work-card > p { margin-bottom: 1.4rem; }

.work-metric {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  margin-top: auto;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
}

.work-metric .num {
  font-family: var(--mono);
  font-size: 1.65rem;
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
}

.work-metric .lbl {
  font-size: 0.78rem;
  color: var(--ink-3);
  line-height: 1.35;
}

.work-link {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--accent);
  text-decoration: none;
  margin-top: 1rem;
}

.work-link:hover { color: var(--accent-2); }

/* ── Approach ─────────────────────────────────── */

.approach-grid { gap: 2rem 3rem; }

.approach-item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}

.approach-num {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.35rem 0.55rem;
  flex-shrink: 0;
}

.approach-item h3 { margin-bottom: 0.35rem; }

.approach-item p {
  color: var(--ink-2);
  font-size: 0.95rem;
}

/* ── Team ─────────────────────────────────────── */

.founder-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 2rem;
  margin-top: 2.75rem;
  display: grid;
  grid-template-columns: 15rem 1fr;
  gap: 2.5rem;
  align-items: start;
}

.avatar {
  width: 5.5rem;
  height: 5.5rem;
  border-radius: 14px;
  background: var(--term-bg);
  border: 1px solid var(--term-line);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: #ffffff;
}

.avatar .pipe { color: var(--accent-2); font-weight: 400; }

.avatar-sm {
  width: 3.2rem;
  height: 3.2rem;
  border-radius: 10px;
  font-size: 1rem;
  flex-shrink: 0;
}

.founder-name {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-top: 1.1rem;
}

.founder-role {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-top: 0.3rem;
}

.founder-meta {
  margin-top: 1.2rem;
  border-top: 1px solid var(--line-2);
  padding-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.founder-meta .row {
  display: flex;
  gap: 0.8rem;
  font-size: 0.82rem;
}

.founder-meta .k {
  font-family: var(--mono);
  color: var(--ink-3);
  width: 4.2rem;
  flex-shrink: 0;
}

.founder-meta .v { color: var(--ink-2); }

.founder-links {
  display: flex;
  gap: 1rem;
  margin-top: 1.2rem;
  flex-wrap: wrap;
}

.founder-links a {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--accent);
  text-decoration: none;
}

.founder-links a:hover { color: var(--accent-2); }

.founder-bio p {
  color: var(--ink-2);
  font-size: 0.98rem;
  margin-bottom: 1rem;
}

.founder-bio strong { color: var(--ink); }

.founder-stack {
  list-style: none;
  margin: 1.4rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.founder-stack li {
  color: var(--ink-2);
  font-size: 0.95rem;
  padding-left: 1.3rem;
  position: relative;
}

.founder-stack li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 3px;
  background: var(--accent);
}

.founder-stack strong { color: var(--ink); }

.team-quote {
  border-left: 3px solid var(--accent);
  padding: 0.4rem 0 0.4rem 1.25rem;
  margin-top: 1.4rem;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.5;
}

.eng-card {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
}

.eng-card h3 { margin-bottom: 0.15rem; }

.eng-role {
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.team-teaser {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
  flex-wrap: wrap;
}

.team-teaser .section-sub { max-width: 36rem; }

.team-teaser-side {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.25rem;
}

.avatar-row { display: flex; gap: 0.6rem; }

/* ── Contact ──────────────────────────────────── */

.contact {
  position: relative;
  overflow: hidden;
}

.contact .glow {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: radial-gradient(40rem 26rem at 88% 120%, var(--glow), transparent 62%);
  animation: glowDrift 18s ease-in-out infinite;
  pointer-events: none;
}

.contact-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: start;
}

.contact-lead {
  color: var(--ink-2);
  font-size: 1.05rem;
  max-width: 34rem;
  margin-top: 1.1rem;
}

.lead-form {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.lead-form .row { display: flex; gap: 1rem; }

.lead-form label {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.lead-form .lbl {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-3);
}

.lead-form input,
.lead-form textarea {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.65rem 0.8rem;
  color: var(--ink);
  font-family: inherit;
  font-size: 0.9rem;
  outline: none;
}

.lead-form input:focus,
.lead-form textarea:focus { border-color: var(--accent); }

.lead-form textarea { resize: vertical; }

.lead-form button {
  margin-top: 0.2rem;
  font-weight: 600;
  font-size: 0.98rem;
  font-family: inherit;
  padding: 0.85rem 1.6rem;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: var(--cta-ink);
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}

.lead-form button:hover { background: var(--accent-2); }
.lead-form button:active { transform: translateY(1px); }

.form-error {
  color: #b4232a;
  font-size: 0.85rem;
  display: none;
}

.form-error.show { display: block; }

/* honeypot: visually gone, present for bots */
.lead-form .hp {
  position: absolute;
  left: -6000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-done {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 2rem 1.8rem;
  display: none;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.85rem;
  min-height: 16rem;
  justify-content: center;
}

.form-done.show { display: flex; }

.form-done .badge {
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 9px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 1.3rem;
  font-weight: 600;
}

.form-done h3 {
  font-size: 1.3rem;
  font-weight: 700;
}

.form-done p {
  color: var(--ink-2);
  font-size: 0.95rem;
}

.form-done .again {
  margin-top: 0.4rem;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink-2);
  font-family: inherit;
  font-size: 0.85rem;
  padding: 0.5rem 1rem;
  cursor: pointer;
  transition: border-color 0.15s;
}

.form-done .again:hover { border-color: var(--ink-3); }

/* ── Footer ───────────────────────────────────── */

.footer {
  border-top: 1px solid var(--line-2);
  padding: 2.5rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-inner > div {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.footer p {
  color: var(--ink-3);
  font-size: 0.85rem;
}

/* ── Case-study pages ─────────────────────────── */

.cs-hero { padding: 5rem 0 3rem; }

.cs-hero h1 {
  font-size: clamp(2rem, 5vw, 3.1rem);
  max-width: 46rem;
}

.cs-client {
  color: var(--ink-3);
  font-size: 0.95rem;
  margin-top: 1.25rem;
  max-width: 44rem;
}

.cs-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin: 2.5rem 0 0;
}

.cs-stat {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.1rem 1.25rem;
}

.cs-stat .num {
  font-family: var(--mono);
  font-size: 1.45rem;
  font-weight: 600;
  color: var(--accent);
  display: block;
}

.cs-stat .lbl {
  font-size: 0.78rem;
  color: var(--ink-3);
  line-height: 1.4;
  display: block;
  margin-top: 0.3rem;
}

.cs-body {
  max-width: 46rem;
  padding-bottom: 5rem;
}

.cs-body h2 {
  font-size: 1.45rem;
  margin: 3rem 0 1rem;
}

.cs-body p { color: var(--ink-2); margin-bottom: 1.1rem; }

.cs-body ul, .cs-body ol {
  color: var(--ink-2);
  margin: 0 0 1.1rem 1.4rem;
}

.cs-body li { margin-bottom: 0.55rem; }

.cs-body strong { color: var(--ink); }

.cs-callout {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 0 12px 12px 0;
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  color: var(--ink);
  font-size: 1.02rem;
}

.cs-next {
  border-top: 1px solid var(--line-2);
  padding: 2rem 0 4rem;
}

.cs-next a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.cs-next a:hover { color: var(--accent-2); }

/* ── Responsive ───────────────────────────────── */

@media (max-width: 56rem) {
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cs-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .founder-card { grid-template-columns: 1fr; gap: 1.75rem; }
}

@media (max-width: 40rem) {
  .grid-3, .grid-2, .approach-grid { grid-template-columns: 1fr; }
  .hero { padding: 4rem 0 3.5rem; }
  .section { padding: 3.75rem 0; }
  .nav-links { gap: 1rem; }
  .nav-links a:not(.nav-cta) { display: none; }
  .lead-form .row { flex-direction: column; }
}