/* ============ Base ============ */
:root {
  --bg: #0c0f14;
  --bg-alt: #11151d;
  --surface: #161b25;
  --border: #232a38;
  --text: #e8ecf3;
  --text-dim: #9aa5b5;
  --accent: #4fd1a5;
  --accent-dim: rgba(79, 209, 165, 0.12);
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

html { scroll-behavior: smooth; }

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

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

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

h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; }

h1 { font-size: clamp(2.2rem, 5.5vw, 4rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 4vw, 2.6rem); font-weight: 750; }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.55rem); font-weight: 700; }
h4 {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

p, li { color: var(--text-dim); }
strong { color: var(--text); font-weight: 600; }

a { color: inherit; }

/* ============ Buttons ============ */
.btn {
  display: inline-block;
  background: var(--accent);
  color: #08110d;
  font-weight: 650;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: 10px;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(79, 209, 165, 0.25); }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { box-shadow: none; border-color: var(--accent); color: var(--accent); }

.btn-small { padding: 8px 18px; font-size: 0.85rem; border-radius: 8px; }

.btn { max-width: 100%; overflow-wrap: anywhere; text-align: center; }

/* ============ Language switcher ============ */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 0.78rem;
  margin-left: auto;
}
.lang-switch a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.15s ease;
}
.lang-switch a:hover { color: var(--text); }
.lang-switch a.active { color: var(--accent); }

/* ============ Nav ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(12, 15, 20, 0.78);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.nav.scrolled { border-bottom-color: var(--border); }

.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.2rem;
  text-decoration: none;
}

.nav-links { display: flex; gap: 28px; }
.nav-links a {
  text-decoration: none;
  font-size: 0.92rem;
  color: var(--text-dim);
  transition: color 0.15s ease;
}
.nav-links a:hover { color: var(--accent); }

/* ============ Hero ============ */
.hero {
  padding: 170px 0 110px;
  background:
    radial-gradient(ellipse 60% 50% at 70% 10%, rgba(79, 209, 165, 0.09), transparent),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(79, 130, 209, 0.06), transparent);
}

.hero-kicker {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 1.4rem;
}

.hero-sub {
  max-width: 640px;
  font-size: 1.13rem;
  margin-top: 1.6rem;
}

.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 2.2rem; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 4.5rem;
  padding-top: 2.6rem;
  border-top: 1px solid var(--border);
}

.stat-num {
  display: block;
  font-family: var(--mono);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 600;
  color: var(--text);
}
.stat-label {
  display: block;
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-top: 6px;
  line-height: 1.45;
}

/* ============ Sections ============ */
.section { padding: 110px 0; }
.section-alt { background: var(--bg-alt); }

.section-kicker {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 1.2rem;
}

.section-intro {
  max-width: 640px;
  font-size: 1.08rem;
  margin-top: 1.4rem;
}

/* ============ Case studies ============ */
.case {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: clamp(26px, 4vw, 44px);
  margin-top: 2.6rem;
  transition: border-color 0.2s ease;
}
.case:hover { border-color: rgba(79, 209, 165, 0.4); }
.case:first-of-type { margin-top: 3.4rem; }

.case-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 1rem;
}

.case-tag {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 4px 10px;
  border-radius: 99px;
}
.case-tag.flagship { background: var(--accent-dim); color: var(--accent); }

.case-client {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text-dim);
}

.case h3 { margin-bottom: 1.6rem; }

.case-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 36px;
}

.case-grid ul { padding-left: 1.1rem; display: grid; gap: 0.55rem; }

.case-impact {
  margin-top: 1.8rem;
  padding: 18px 22px;
  background: var(--accent-dim);
  border-left: 3px solid var(--accent);
  border-radius: 0 12px 12px 0;
}
.case-impact p { color: var(--text); font-size: 0.98rem; }

.case-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 1.6rem;
}
.case-stack span {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 4px 11px;
  border-radius: 99px;
}

/* ============ Before / After visuals ============ */
.case-visual {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 14px;
  align-items: stretch;
  margin: 1.8rem 0 2rem;
}

.cv-panel {
  background: #0d1118;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.cv-label {
  align-self: flex-start;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 3px 10px;
  border-radius: 99px;
}
.cv-label.before { background: rgba(229, 96, 96, 0.12); color: #e58a8a; }
.cv-label.after { background: var(--accent-dim); color: var(--accent); }

.cv-arrow {
  align-self: center;
  color: var(--accent);
  font-size: 1.5rem;
  font-weight: 700;
  padding: 0 2px;
}

.cv-note {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: #c98484;
}
.cv-note.good { color: var(--accent); }

/* --- chat mock --- */
.chat { display: grid; gap: 8px; }
.chat-bubble {
  position: relative;
  background: #1c2330;
  border-radius: 12px 12px 12px 3px;
  padding: 9px 58px 9px 13px;
  font-size: 0.82rem;
  color: var(--text);
  max-width: 92%;
  justify-self: start;
}
.chat-bubble.internal {
  background: #232b1c;
  border-radius: 12px 12px 3px 12px;
  justify-self: end;
}
.chat-time {
  position: absolute;
  right: 10px;
  bottom: 7px;
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--text-dim);
}
.chat-photo {
  display: block;
  background: #11161f;
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 14px 10px;
  margin-bottom: 7px;
  font-size: 0.72rem;
  color: var(--text-dim);
  text-align: center;
}

/* --- pipeline flow --- */
.flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 0.7rem;
}
.flow-node {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 4px 10px;
  border-radius: 8px;
  white-space: nowrap;
}
.flow-node.ai { border-color: rgba(79, 209, 165, 0.5); color: var(--accent); }
.flow-sep { color: var(--text-dim); }

/* --- task card mock --- */
.task-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  display: grid;
  gap: 10px;
}
.task-title { font-size: 0.88rem; font-weight: 650; color: var(--text); }
.task-fields { display: flex; flex-wrap: wrap; gap: 6px; }

.chip {
  font-family: var(--mono);
  font-size: 0.66rem;
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 3px 9px;
  border-radius: 99px;
  white-space: nowrap;
}
.chip-red { color: #e58a8a; border-color: rgba(229, 96, 96, 0.4); }
.chip-accent { color: var(--accent); border-color: rgba(79, 209, 165, 0.4); }

.task-check { list-style: none; display: grid; gap: 5px; }
.task-check li {
  font-size: 0.78rem;
  padding-left: 24px;
  position: relative;
}
.task-check li::before {
  content: "○";
  position: absolute;
  left: 4px;
  color: var(--text-dim);
}
.task-check li.done { color: var(--text); }
.task-check li.done::before { content: "✓"; color: var(--accent); }

.task-sla {
  font-family: var(--mono);
  font-size: 0.66rem;
  color: var(--accent);
  border-top: 1px solid var(--border);
  padding-top: 9px;
}

/* --- steps list (before) --- */
.steps-list {
  list-style: none;
  counter-reset: step;
  display: grid;
  gap: 9px;
}
.steps-list li {
  counter-increment: step;
  font-size: 0.85rem;
  padding-left: 34px;
  position: relative;
}
.steps-list li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 1px;
  width: 22px;
  height: 22px;
  border: 1px solid var(--border);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--text-dim);
}

/* --- email mock --- */
.email-mock {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  display: grid;
  gap: 8px;
}
.email-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--border);
}
.email-subject { font-size: 0.84rem; font-weight: 650; color: var(--text); }
.email-row {
  display: grid;
  grid-template-columns: 1fr auto 52px;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--text);
}
.email-row.dim { color: var(--text-dim); font-size: 0.74rem; }
.email-divider { border-top: 1px dashed var(--border); }

.redact {
  display: inline-block;
  height: 10px;
  border-radius: 3px;
  background: linear-gradient(90deg, #2a3343, #38445a);
}
.redact.w2 { width: 36px; }
.redact.w3 { width: 54px; }
.redact.w4 { width: 76px; }

.trend { font-family: var(--mono); font-size: 0.68rem; color: var(--text-dim); text-align: right; }
.trend.up { color: var(--accent); }

/* --- spreadsheet mock --- */
.sheet {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  font-family: var(--mono);
  font-size: 0.66rem;
}
.sheet-row {
  display: grid;
  grid-template-columns: 64px 1fr 1fr 1fr;
  border-bottom: 1px solid var(--border);
}
.sheet-row span {
  padding: 7px 8px;
  border-right: 1px solid var(--border);
  white-space: nowrap;
  overflow: hidden;
  color: var(--text-dim);
}
.sheet-row span:last-child { border-right: none; }
.sheet-row.head span {
  background: #1a212e;
  color: var(--text);
  text-align: center;
  font-weight: 600;
}
.sheet-row .err { color: #e58a8a; font-weight: 600; }
.sheet-tabs {
  display: flex;
  gap: 2px;
  background: #0b0f15;
  padding: 5px 6px 0;
}
.sheet-tabs span {
  padding: 4px 10px;
  border-radius: 6px 6px 0 0;
  background: #141a25;
  color: var(--text-dim);
}
.sheet-tabs span.active { background: var(--surface); color: var(--text); }

/* --- schema mock --- */
.schema { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.schema-table {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 9px 12px;
  display: grid;
  gap: 2px;
}
.schema-table strong { font-size: 0.76rem; color: var(--text); }
.schema-table span { font-family: var(--mono); font-size: 0.66rem; color: var(--text-dim); }

/* --- files mock --- */
.files { display: grid; gap: 8px; }
.file {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 12px;
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--text-dim);
}
.file-icon { font-size: 0.95rem; }

/* --- dashboard mock --- */
.dash {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  display: grid;
  gap: 12px;
}
.dash-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.kpi {
  background: #11161f;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 10px;
  display: grid;
  gap: 5px;
}
.kpi-label { font-family: var(--mono); font-size: 0.62rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.06em; }
.kpi .trend { text-align: left; }

.dash-bars {
  display: flex;
  align-items: flex-end;
  gap: 5px;
  height: 64px;
  padding: 0 2px;
}
.dash-bars i {
  flex: 1;
  border-radius: 3px 3px 0 0;
  background: linear-gradient(to top, rgba(79, 209, 165, 0.25), rgba(79, 209, 165, 0.75));
}
.dash-caption { font-family: var(--mono); font-size: 0.64rem; color: var(--text-dim); }

/* ============ About ============ */
.about-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 44px;
  margin-top: 2.6rem;
  align-items: start;
}
.about-body { display: grid; gap: 1rem; }
.about-body p { font-size: 1.02rem; }
.about-aside {
  font-size: 0.88rem !important;
  color: var(--text-dim);
  border-left: 2px solid var(--border);
  padding-left: 14px;
}

.cred-chips { display: flex; flex-wrap: wrap; gap: 8px; align-content: start; }
.cred-chips span {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 7px 13px;
  border-radius: 99px;
}
.cred-link {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--accent);
  text-decoration: none;
  padding: 7px 4px;
}
.cred-link:hover { text-decoration: underline; }

/* ============ Approach ============ */
.approach-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 3rem;
}

.approach-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
}
.approach-card p { font-size: 0.96rem; }

.toolbelt { margin-top: 2.6rem; }

/* ============ Contact / footer ============ */
.contact-container { text-align: center; }
.contact-container .section-intro { margin-left: auto; margin-right: auto; }
.contact-container .hero-cta { justify-content: center; }

.contact-footnote {
  margin-top: 2.4rem;
  font-family: var(--mono);
  font-size: 0.8rem;
}

.footer {
  padding: 30px 0;
  border-top: 1px solid var(--border);
  text-align: center;
}
.footer p { font-size: 0.8rem; font-family: var(--mono); }

/* ============ Reveal animation ============ */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ============ Responsive ============ */
@media (max-width: 860px) {
  .nav-links { display: none; }
  .hero { padding: 130px 0 80px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .section { padding: 80px 0; }
  .case-grid { grid-template-columns: 1fr; gap: 24px; }
  .approach-grid { grid-template-columns: 1fr; }
  .case-visual { grid-template-columns: 1fr; }
  .cv-arrow { transform: rotate(90deg); justify-self: center; }
  .about-grid { grid-template-columns: 1fr; gap: 28px; }
  .dash-kpis { grid-template-columns: 1fr 1fr; }
}