/* AI-Track Usecase-Mockup — agentbuilders.ch CD
 *
 * Brand:
 * - Background:   #f1ede4 (cremiges Beige)
 * - Ink:          #0a0a0a (near-black)
 * - Red-Akzent:   #b91c1c (CHAT, Live-Demo-Eyebrow)
 * - Red-CTA:      #dc2626 (Sekundär-Buttons)
 * - Font:         "Helvetica Neue", Helvetica, Arial
 * - Eckige Boxen, dünne schwarze Trennlinien zwischen Sections
 */
:root {
  --bg: #f1ede4;
  --ink: #0a0a0a;
  --ink-soft: #5a5a55;
  --red: #b91c1c;
  --red-bright: #dc2626;
  --line: #0a0a0a;
  --line-soft: rgba(10, 10, 10, 0.18);
  --paper: #f6f3ec;
  --black: #0a0a0a;
}

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

body {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

/* ---------- BANNER ---------- */
.banner-bar {
  background: var(--ink);
  color: var(--bg);
  padding: 8px 24px;
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-align: center;
}
.banner-bar a {
  color: var(--bg);
  margin-left: 12px;
  text-decoration: none;
  opacity: .7;
}
.banner-bar a:hover { opacity: 1; }

/* ---------- LAYOUT ---------- */
.shell {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}
section {
  border-top: 1px solid var(--line);
}
section:first-of-type {
  border-top: 1px solid var(--line);
}
.section-label {
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
  margin: 0 0 28px;
  font-variant-numeric: tabular-nums;
}
.section-label .num { font-weight: 700; }
.section-label .em-dash { margin: 0 8px; }

/* ---------- HERO ---------- */
.hero { padding: 72px 0 56px; border-top: 0; }
.eyebrow {
  display: inline-block;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 24px;
}
.eyebrow::before {
  content: "›";
  margin-right: 6px;
  display: inline-block;
}
.eyebrow.is-red { color: var(--red); }
.hero h1 {
  font-size: clamp(2.4rem, 5.2vw, 4.2rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.98;
  margin: 0 0 32px;
  color: var(--ink);
  white-space: pre-line;
  max-width: 16ch;
}
.hero .sub {
  font-size: 1.1rem;
  color: var(--ink-soft);
  margin: 0 0 36px;
  max-width: 60ch;
}
.hero hr.thin {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 28px 0 14px;
  max-width: 460px;
}
.hero .sub-meta {
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink);
  margin: 0 0 28px;
  max-width: 460px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 8px;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 18px 28px;
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  border: 0;
  border-radius: 0;
  letter-spacing: 0.005em;
  transition: opacity .12s, transform .12s;
}
.btn-primary {
  background: var(--ink);
  color: var(--bg);
}
.btn-primary:hover { opacity: 0.85; }
.btn-secondary {
  background: var(--red);
  color: var(--bg);
}
.btn-secondary:hover { background: var(--red-bright); }
.btn-arrow::after {
  content: "→";
  margin-left: 12px;
  font-weight: 400;
}

.cta-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
}
.cta-row .small-note {
  font-size: .9rem;
  color: var(--ink-soft);
  margin-left: 6px;
}
.cta-row .small-note a { color: var(--ink); text-decoration: underline; }

/* ---------- USECASE STORY ---------- */
.usecase-story { padding: 64px 0 56px; }
.usecase-story h2 {
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0 0 24px;
}
.usecase-story .row {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: start;
}
.usecase-story .body p {
  font-size: 1.02rem;
  line-height: 1.55;
  margin: 0 0 14px;
  color: var(--ink);
}
.usecase-story .body .pain-bullet,
.usecase-story .body .solution-bullet,
.usecase-story .body .diff-bullet {
  position: relative;
  padding-left: 24px;
}
.usecase-story .body .pain-bullet::before,
.usecase-story .body .solution-bullet::before,
.usecase-story .body .diff-bullet::before {
  content: "▸";
  color: var(--red);
  position: absolute;
  left: 0;
  top: 0;
  font-size: 1rem;
}
.usp-callout {
  background: var(--ink);
  color: var(--bg);
  padding: 24px 28px;
  font-size: .98rem;
  line-height: 1.5;
  border: 0;
}
.usp-callout strong {
  display: block;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--bg);
  opacity: .65;
  margin-bottom: 6px;
}

/* ---------- WORKFLOW (KERN-SECTION) ---------- */
.workflow-section { padding: 64px 0 64px; }
.workflow-section h2 {
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0 0 12px;
}
.workflow-section .sub {
  color: var(--ink-soft);
  font-size: 1rem;
  margin: 0 0 36px;
  max-width: 70ch;
}
.workflow-canvas {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 36px 28px;
  overflow: hidden;
}
.workflow-canvas svg {
  width: 100%;
  height: auto;
  display: block;
}

/* ---------- ROI + PRICING ---------- */
.roi-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.roi-cell {
  padding: 36px 28px;
}
.roi-cell:first-child { border-right: 1px solid var(--line); }
.roi-cell .num {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 10px;
}
.roi-cell .label {
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 6px;
}
.roi-cell .body { color: var(--ink-soft); font-size: .98rem; }

.pricing-section { padding: 56px 0 56px; }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 24px;
}
.pricing-grid--single {
  grid-template-columns: minmax(0, 540px);
}
.pricing-card {
  border: 1px solid var(--line);
  padding: 28px;
  background: transparent;
}
.pricing-card .label {
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.pricing-card .amount {
  font-size: 1.6rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.pricing-card .card-note {
  font-size: .9rem;
  color: var(--ink-soft);
  margin: 14px 0 0;
  line-height: 1.45;
}
.pricing-statement {
  border-bottom: 1px solid var(--line);
  border-top: 1px solid var(--line);
  padding: 14px 0;
  font-size: .92rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink);
}

/* ---------- CTA SECTION ---------- */
.cta-section {
  padding: 56px 0 56px;
}
.cta-section h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0 0 32px;
}
.cta-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--line);
}
.cta-card {
  padding: 32px;
  background: var(--ink);
  color: var(--bg);
}
.cta-card + .cta-card { border-left: 1px solid rgba(255,255,255,.1); }
.cta-card .label {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 18px;
  opacity: .7;
}
.cta-card .head {
  font-size: clamp(1.2rem, 2vw, 1.7rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.05;
  margin: 0 0 14px;
}
.cta-card .head a { color: var(--bg); text-decoration: none; }
.cta-card .head .arrow { margin-left: 8px; font-weight: 400; }
.cta-card .body { font-size: .96rem; opacity: .85; margin: 0; }

/* ---------- FOOTER ---------- */
footer {
  background: var(--ink);
  color: var(--bg);
  padding: 36px 0 28px;
  font-size: .88rem;
}
footer .shell { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 24px; }
footer .label {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
  opacity: .65;
}
footer a { color: var(--bg); text-decoration: underline; }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 760px) {
  .shell { padding: 0 20px; }
  .usecase-story .row { grid-template-columns: 1fr; gap: 28px; }
  .roi-block { grid-template-columns: 1fr; }
  .roi-cell:first-child { border-right: 0; border-bottom: 1px solid var(--line); }
  .pricing-grid { grid-template-columns: 1fr; }
  .cta-cards { grid-template-columns: 1fr; }
  .cta-card + .cta-card { border-left: 0; border-top: 1px solid rgba(255,255,255,.1); }
  footer .shell { flex-direction: column; }
}