/* IOTA — feuille de style commune
   Charte : rouge-iota #C31435, noir #0B0B0B, gris #626262,
   gris-clair #C8C2C4, gris-tres-clair #EFEDEE, Arial/Helvetica. */

:root {
  --rouge-iota: #C31435;
  --noir: #0B0B0B;
  --gris: #626262;
  --gris-clair: #C8C2C4;
  --gris-tres-clair: #EFEDEE;
  --blanc: #FFFFFF;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--blanc);
  color: var(--noir);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

.wrap {
  width: min(92vw, var(--max-width));
  margin: 0 auto;
}

/* Eyebrow / kicker */
.eyebrow {
  display: block;
  font-size: 12px;
  font-weight: bold;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rouge-iota);
  margin: 0 0 12px;
}

h1, h2, h3, h4 {
  font-family: Arial, Helvetica, sans-serif;
  font-weight: bold;
  margin: 0;
  color: var(--noir);
}

h1 {
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.015em;
}

h2 {
  font-size: 28px;
  line-height: 1.2;
}

h3 {
  font-size: 19px;
  line-height: 1.3;
}

p {
  margin: 0 0 16px;
}

.lede {
  font-size: 19px;
  line-height: 1.55;
  color: var(--gris);
  max-width: 640px;
}

.muted {
  color: var(--gris);
}

/* ---------- Header ---------- */

.site-header {
  border-bottom: 1px solid var(--gris-clair);
  background: var(--blanc);
  position: sticky;
  top: 0;
  z-index: 20;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

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

.brand-logo {
  display: block;
  height: 32px;
  width: auto;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.main-nav a {
  text-decoration: none;
  font-size: 14px;
  font-weight: bold;
  color: var(--noir);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  border-bottom-color: var(--rouge-iota);
}

.nav-cta {
  display: inline-block;
  background: var(--noir);
  color: var(--blanc) !important;
  padding: 10px 18px;
  font-size: 13px;
  border: none !important;
}

.nav-cta:hover {
  background: var(--rouge-iota);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--gris-clair);
  padding: 8px 10px;
  font-size: 14px;
  font-weight: bold;
}

@media (max-width: 780px) {
  .nav-toggle {
    display: block;
  }

  .main-nav {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--blanc);
    border-bottom: 1px solid var(--gris-clair);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 4vw 18px;
    display: none;
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    padding: 12px 0;
    border-bottom: 1px solid var(--gris-tres-clair);
  }

  .nav-cta {
    text-align: center;
    margin-top: 10px;
  }
}

/* ---------- Hero ---------- */

.hero {
  padding: 76px 0 64px;
  border-bottom: 1px solid var(--gris-clair);
}

.hero h1 {
  max-width: 820px;
}

.hero .lede {
  margin-top: 22px;
  font-size: 22px;
  color: var(--noir);
}

.hero-cost {
  background: var(--noir);
  color: var(--blanc);
  padding: 68px 0 72px;
}

.hero-cost h1 {
  max-width: 940px;
  color: var(--blanc);
}

.hero-cost .lede {
  color: var(--gris-clair);
}

.hero-cost .cost-callout {
  align-items: flex-start;
  justify-content: flex-start;
  margin: 34px 0 0;
  height: 150px;
}

.hero-cost .cost-formula {
  max-width: 620px;
  min-height: 32px;
  font-size: 20px;
  text-align: left;
}

.hero-cost .cost-amount {
  font-size: clamp(48px, 8vw, 72px);
  min-height: clamp(48px, 8vw, 72px);
}

.hero-conclusion {
  margin: 18px 0 0;
  font-size: 20px;
  font-weight: bold;
  color: var(--blanc);
}

.hero-cost .btn-primary {
  background: var(--rouge-iota);
  border-color: var(--rouge-iota);
  color: var(--blanc);
}

.hero-cost .btn-primary:hover {
  background: var(--blanc);
  border-color: var(--blanc);
  color: var(--noir);
}

.hero-cost .btn-secondary {
  background: transparent;
  border-color: var(--blanc);
  color: var(--blanc);
}

.hero-cost .btn-secondary:hover {
  border-color: var(--rouge-iota);
  color: var(--rouge-iota);
}

#comment {
  scroll-margin-top: 76px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 30px;
  flex-wrap: wrap;
}

/* ---------- Demo panel (typewriter) ---------- */

.demo-intro {
  margin: 0;
  max-width: 460px;
  font-size: 13px;
  color: var(--gris);
}

.demo-panel {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin-top: 16px;
  border: 1px solid var(--gris-clair);
  max-width: 720px;
}

.demo-col {
  flex: 1;
  padding: 20px 22px;
  min-width: 0;
}

.demo-col.demo-output {
  background: var(--gris-tres-clair);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.demo-col.demo-output.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.demo-label {
  display: block;
  font-size: 10.5px;
  font-weight: bold;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gris);
  margin-bottom: 10px;
}

.demo-type {
  font-family: "Courier New", Courier, monospace;
  font-size: 14px;
  line-height: 1.5;
  color: var(--noir);
  margin: 0;
  min-height: 63px;
}

.demo-cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  margin-left: 2px;
  background: var(--rouge-iota);
  vertical-align: text-bottom;
  animation: iota-blink 0.9s steps(1) infinite;
}

.demo-cursor.is-done {
  animation: none;
  opacity: 0;
}

.demo-output ul {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 14px;
}

.demo-output li {
  padding: 4px 0;
}

.demo-output li strong {
  display: inline-block;
  min-width: 78px;
  color: var(--gris);
  font-size: 10.5px;
  font-weight: bold;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  vertical-align: middle;
}

.demo-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  color: var(--rouge-iota);
  font-size: 18px;
  border-left: 1px solid var(--gris-clair);
  border-right: 1px solid var(--gris-clair);
  flex-shrink: 0;
}

@media (max-width: 640px) {
  .hero-cost {
    padding: 52px 0 56px;
  }

  .hero-cost .cost-callout {
    margin-top: 28px;
  }

  .hero-cost .cost-formula {
    font-size: 16px;
  }

  .demo-panel {
    flex-direction: column;
  }

  .demo-arrow {
    width: 100%;
    height: 32px;
    border-left: none;
    border-right: none;
    border-top: 1px solid var(--gris-clair);
    border-bottom: 1px solid var(--gris-clair);
  }
}

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

@media (prefers-reduced-motion: reduce) {
  .demo-cursor {
    animation: none;
  }

  .demo-col.demo-output {
    transition: none;
  }
}

.page-hero {
  padding: 56px 0 44px;
  border-bottom: 1px solid var(--gris-clair);
}

.page-hero .lede {
  margin-top: 16px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  text-decoration: none;
  font-weight: bold;
  font-size: 14px;
  padding: 13px 22px;
  border: 1px solid var(--noir);
  cursor: pointer;
  background: var(--blanc);
  color: var(--noir);
}

.btn-primary {
  background: var(--noir);
  color: var(--blanc);
}

.btn-primary:hover {
  background: var(--rouge-iota);
  border-color: var(--rouge-iota);
}

.btn-secondary:hover {
  border-color: var(--rouge-iota);
  color: var(--rouge-iota);
}

/* ---------- Sections ---------- */

section {
  padding: 64px 0;
  border-bottom: 1px solid var(--gris-clair);
}

section:last-of-type {
  border-bottom: none;
}

.section-head {
  max-width: 680px;
  margin-bottom: 40px;
}

/* ---------- Triptych (why/how/what) ---------- */

.triptych {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--gris-clair);
  border: 1px solid var(--gris-clair);
}

.triptych-item {
  background: var(--blanc);
  padding: 28px 26px;
}

.triptych-item .eyebrow {
  margin-bottom: 16px;
}

.triptych-item p {
  color: var(--noir);
  font-size: 15px;
  margin: 0;
}

@media (max-width: 780px) {
  .triptych {
    grid-template-columns: 1fr;
  }
}

/* ---------- Cards / grid ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.grid.cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid.cols-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

@media (max-width: 900px) {
  .grid,
  .grid.cols-2,
  .grid.cols-4 {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .grid,
  .grid.cols-2,
  .grid.cols-4 {
    grid-template-columns: 1fr;
  }
}

.card {
  border: 1px solid var(--gris-clair);
  padding: 24px;
  background: var(--blanc);
}

.card h3 {
  margin-bottom: 10px;
}

.card p {
  color: var(--gris);
  font-size: 14.5px;
  margin: 0;
}

.card .tag {
  display: inline-block;
  font-size: 10.5px;
  font-weight: bold;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--rouge-iota);
  border: 1px solid var(--rouge-iota);
  padding: 3px 8px;
  margin-bottom: 14px;
}

/* ---------- Steps (method) ---------- */

.steps {
  display: flex;
  flex-direction: column;
}

.step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  padding: 24px 0;
  border-top: 1px solid var(--gris-tres-clair);
}

.step:first-child {
  border-top: none;
}

.step-index {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 34px;
  color: var(--gris-clair);
  line-height: 1;
}

.step h3 {
  margin-bottom: 8px;
}

.step p {
  color: var(--gris);
  margin: 0;
  max-width: 640px;
}

/* ---------- Flow (connected cards, distinct from numbered .steps) ---------- */

.flow {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--gris-clair);
}

.flow-step {
  flex: 1;
  padding: 24px;
  min-width: 0;
}

.flow-meta {
  display: block;
  font-size: 10.5px;
  font-weight: bold;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--rouge-iota);
  margin-bottom: 10px;
}

.flow-step h3 {
  margin-bottom: 8px;
}

.flow-step p {
  color: var(--gris);
  font-size: 14px;
  margin: 0;
}

.flow-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  color: var(--rouge-iota);
  font-size: 18px;
  border-left: 1px solid var(--gris-clair);
  border-right: 1px solid var(--gris-clair);
  flex-shrink: 0;
}

@media (max-width: 780px) {
  .flow {
    flex-direction: column;
  }

  .flow-arrow {
    width: 100%;
    height: 32px;
    border-left: none;
    border-right: none;
    border-top: 1px solid var(--gris-clair);
    border-bottom: 1px solid var(--gris-clair);
  }
}

/* ---------- Quote / conviction blocks ---------- */

.quote-block {
  border-left: 4px solid var(--rouge-iota);
  padding: 4px 0 4px 20px;
  margin: 0 0 20px;
  font-size: 18px;
  line-height: 1.5;
}

.conviction {
  padding: 26px 0;
  border-top: 1px solid var(--gris-tres-clair);
}

.conviction:first-child {
  border-top: none;
}

.conviction h3 {
  margin-bottom: 10px;
}

.conviction p {
  color: var(--gris);
  max-width: 720px;
}

/* ---------- List with red markers ---------- */

.check-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.check-list li {
  position: relative;
  padding: 8px 0 8px 22px;
  color: var(--noir);
  font-size: 15px;
  border-top: 1px solid var(--gris-tres-clair);
}

.check-list li:first-child {
  border-top: none;
}

.check-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--rouge-iota);
  font-weight: bold;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  border: 1px solid var(--gris-clair);
  border-radius: 99px;
  padding: 7px 14px;
  font-size: 13px;
  color: var(--noir);
}

/* ---------- Table (pricing / comparison) ---------- */

table {
  border-collapse: collapse;
  width: 100%;
}

th, td {
  border: 1px solid var(--gris-tres-clair);
  padding: 12px 14px;
  text-align: left;
  font-size: 14px;
  vertical-align: top;
}

th {
  background: var(--gris-tres-clair);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ---------- Price banner ---------- */

.price-banner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  background: var(--noir);
  color: var(--blanc);
  padding: 32px 30px;
  margin-bottom: 40px;
}

.price-banner .price-amount {
  font-size: 34px;
  font-weight: bold;
}

.price-banner .price-label {
  font-size: 13px;
  color: var(--gris-clair);
  letter-spacing: 0.04em;
}

/* ---------- CTA band ---------- */

.cta-band {
  background: var(--gris-tres-clair);
  text-align: center;
  padding: 64px 0;
  border-bottom: 1px solid var(--gris-clair);
}

.cta-band h2 {
  max-width: 620px;
  margin: 0 auto 16px;
}

.cta-band .lede {
  margin: 0 auto 28px;
  text-align: center;
}

.cta-band .hero-actions {
  justify-content: center;
}

.cta-band.is-dark {
  background: var(--noir);
  color: var(--blanc);
}

.cta-band.is-dark h2 {
  color: var(--blanc);
}

.cta-band.is-dark .lede {
  color: var(--gris-clair);
}

.cta-band.is-dark .btn-primary {
  background: var(--rouge-iota);
  border-color: var(--rouge-iota);
  color: var(--blanc);
}

.cta-band.is-dark .btn-primary:hover {
  background: var(--blanc);
  border-color: var(--blanc);
  color: var(--noir);
}

.cta-band.is-dark .btn-secondary {
  background: transparent;
  border-color: var(--blanc);
  color: var(--blanc);
}

.cta-band.is-dark .btn-secondary:hover {
  border-color: var(--rouge-iota);
  color: var(--rouge-iota);
}

.cost-callout {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  margin: 28px 0;
  min-height: 130px;
  justify-content: center;
}

.cost-formula {
  font-family: "Courier New", Courier, monospace;
  font-size: 18px;
  font-weight: bold;
  color: var(--blanc);
  max-width: 480px;
  min-height: 50px;
  margin: 0;
}

.cost-cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  margin-left: 2px;
  background: var(--rouge-iota);
  vertical-align: text-bottom;
  animation: iota-blink 0.9s steps(1) infinite;
}

.cost-cursor.is-done {
  animation: none;
  opacity: 0;
}

.cost-amount {
  display: block;
  font-size: clamp(40px, 6vw, 56px);
  font-weight: bold;
  color: var(--rouge-iota);
  line-height: 1;
  min-height: clamp(40px, 6vw, 56px);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.cost-amount.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .cost-cursor {
    animation: none;
  }

  .cost-amount {
    transition: none;
  }
}

.cta-band .band-link {
  display: inline-block;
  margin-top: 22px;
  font-size: 13px;
  font-weight: bold;
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- Domain list (editorial, table-derived) ---------- */

.domain-list {
  border-top: 1px solid var(--gris-clair);
}

.domain-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--gris-tres-clair);
}

.domain-row h3 {
  font-size: 17px;
}

.domain-row p {
  color: var(--gris);
  font-size: 15px;
  margin: 0;
  max-width: 620px;
}

@media (max-width: 640px) {
  .domain-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

/* ---------- Founder / about layout ---------- */

.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

@media (max-width: 800px) {
  .about-layout {
    grid-template-columns: 1fr;
  }
}

/* ---------- Contact form ---------- */

.contact-layout {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: start;
}

@media (max-width: 800px) {
  .contact-layout {
    grid-template-columns: 1fr;
  }
}

form.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-row label {
  font-size: 12px;
  font-weight: bold;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--gris);
}

.form-row input,
.form-row select,
.form-row textarea {
  font: inherit;
  font-size: 15px;
  border: 1px solid var(--gris-clair);
  padding: 12px 14px;
  background: var(--blanc);
  color: var(--noir);
}

.form-row textarea {
  resize: vertical;
  min-height: 130px;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--rouge-iota);
}

.form-note {
  font-size: 12.5px;
  color: var(--gris);
}

.form-note a {
  color: var(--rouge-iota);
  font-weight: bold;
}

.form-warning {
  font-size: 13px;
  font-weight: bold;
  color: var(--rouge-iota);
  margin: 0;
}

/* ---------- Footer ---------- */

.site-footer {
  padding: 40px 0;
}

.site-footer .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
}

.footer-brand .brand-logo {
  height: 26px;
}

.footer-nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-nav a {
  text-decoration: none;
  font-size: 13px;
  color: var(--gris);
}

.footer-nav a:hover {
  color: var(--rouge-iota);
}

.footer-copy {
  font-size: 12px;
  color: var(--gris);
  width: 100%;
  padding-top: 20px;
  margin-top: 20px;
  border-top: 1px solid var(--gris-tres-clair);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}