/* ==========================================================================
   Edumentis — V1 homepage
   Direction : minimaliste, éditoriale, une seule couleur d'accent.
   ========================================================================== */

:root {
  /* Couleurs */
  --color-ink: #16171a;
  --color-ink-soft: #55565c;
  --color-ink-faint: #8a8b90;
  --color-paper: #ffffff;
  --color-paper-alt: #f6f4f1;
  --color-line: #e5e2dc;
  --color-accent: #b5581e;
  --color-accent-soft: rgba(181, 88, 30, 0.08);

  /* Typographie */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto,
    "Helvetica Neue", Arial, sans-serif;

  /* Rythme */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;

  --container-width: 1480px;
  --radius: 10px;
}

/* ---- Reset minimal ---- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

h1,
h2,
h3,
p {
  margin: 0;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

.container {
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-ink);
  color: var(--color-paper);
  padding: 0.75rem 1.25rem;
  z-index: 1000;
  border-radius: 0 0 6px 0;
}

.skip-link:focus {
  left: 0;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* ---- Typographie ---- */
.eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.eyebrow--center {
  text-align: center;
}

h1 {
  font-size: clamp(2.5rem, 4.5vw + 1rem, 4.25rem);
  font-weight: 650;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.85rem, 2.4vw + 1rem, 2.6rem);
  font-weight: 650;
  line-height: 1.15;
  letter-spacing: -0.015em;
  max-width: 26ch;
}

.section-title--center {
  max-width: none;
  text-align: center;
  margin-inline: auto;
}

h3 {
  font-size: 1.1rem;
  font-weight: 650;
}

p {
  color: var(--color-ink-soft);
  max-width: 52ch;
}

/* ---- Boutons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s ease, background-color 0.15s ease, color 0.15s ease,
    border-color 0.15s ease;
  white-space: nowrap;
}

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

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

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

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

.btn-large {
  padding: 1rem 2.25rem;
  font-size: 1rem;
}

.btn:disabled {
  background: var(--color-paper-alt);
  color: var(--color-ink-faint);
  cursor: not-allowed;
}

.btn:disabled:hover {
  background: var(--color-paper-alt);
}

.placeholder-link {
  outline: 1px dashed var(--color-line);
  outline-offset: 4px;
}

/* ==========================================================================
   Header / navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-line);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.02);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1.15rem;
}

.logo {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  font-size: 0.95rem;
  font-weight: 500;
}

.primary-nav a {
  color: var(--color-ink-soft);
  transition: color 0.15s ease;
}

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

.nav-cta {
  color: var(--color-ink) !important;
  padding: 0.55rem 1.2rem;
  border: 1px solid var(--color-line);
  border-radius: 999px;
}

.nav-cta:hover {
  border-color: var(--color-ink) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
}

.nav-toggle__bar {
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  padding-block: var(--space-2xl) var(--space-3xl);
}

.hero__lead {
  margin-top: var(--space-md);
  font-size: 1.15rem;
  max-width: 46ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.hero__visual img {
  width: 100%;
  height: auto;
  display: block;
}

@media (min-width: 960px) {
  .hero {
    grid-template-columns: 0.85fr 1.15fr;
    align-items: center;
    padding-block: var(--space-3xl);
  }
}

/* ==========================================================================
   Sections génériques
   ========================================================================== */

.section {
  padding-block: var(--space-3xl);
}

.section--alt {
  background: var(--color-paper-alt);
}

.section-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
}

@media (min-width: 900px) {
  .section-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }

  .section-grid--reverse .section__text {
    order: 2;
  }

  .section-grid--reverse .section__visual {
    order: 1;
  }
}

.section__text p {
  margin-top: var(--space-md);
}

.plain-list {
  list-style: none;
  margin-top: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.plain-list li {
  position: relative;
  padding-left: 1.4rem;
  color: var(--color-ink-soft);
  font-size: 0.98rem;
}

.plain-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* ==========================================================================
   Mockups d'interface (placeholders CSS — aucune vraie capture disponible)
   ========================================================================== */

.mockup {
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-paper);
}

.mockup__bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-paper-alt);
}

.mockup__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-line);
  flex-shrink: 0;
}

.mockup__url {
  margin-left: 0.6rem;
  font-size: 0.75rem;
  color: var(--color-ink-faint);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mockup__body {
  display: grid;
  grid-template-columns: 34% 1fr;
  min-height: 220px;
}

.mockup__body--journey {
  grid-template-columns: 1fr;
  padding: var(--space-lg);
  gap: var(--space-lg);
}

.mockup__sidebar {
  border-right: 1px solid var(--color-line);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.mockup__content {
  padding: var(--space-md) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.mockup__content--full {
  grid-column: 1 / -1;
}

.mockup__line {
  display: block;
  height: 8px;
  border-radius: 4px;
  background: var(--color-line);
  width: 70%;
}

.mockup__line--short {
  width: 40%;
}

.mockup__line--wide {
  width: 90%;
}

.mockup__line--title {
  height: 11px;
  width: 55%;
  background: var(--color-ink-faint);
  opacity: 0.5;
}

.mockup__line--active {
  background: var(--color-accent);
  opacity: 0.55;
}

.mockup__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-block: 0.5rem;
}

.mockup__card {
  aspect-ratio: 4 / 3;
  border: 1px solid var(--color-line);
  border-radius: 6px;
  background: var(--color-paper-alt);
}

.mockup__card--accent {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.mockup__row {
  height: 34px;
  border: 1px solid var(--color-line);
  border-radius: 6px;
  background: var(--color-paper-alt);
}

.mockup__row--accent {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.mockup__field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.4rem;
}

.mockup__toggle {
  width: 32px;
  height: 18px;
  border-radius: 999px;
  background: var(--color-line);
  position: relative;
  flex-shrink: 0;
}

.mockup__toggle::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-paper);
}

.mockup__toggle--on {
  background: var(--color-accent);
}

.mockup__toggle--on::after {
  left: auto;
  right: 2px;
}

.mockup__caption {
  margin-top: var(--space-sm);
  font-size: 0.8rem;
  color: var(--color-ink-faint);
  text-align: center;
  max-width: none;
}

/* Journey / parcours (onboarding) */
.journey {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  position: relative;
}

.journey::before {
  content: "";
  position: absolute;
  top: 6px;
  left: 6px;
  right: 6px;
  height: 1px;
  background: var(--color-line);
}

.journey__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  position: relative;
  z-index: 1;
  flex: 1;
}

.journey__dot {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--color-paper);
  border: 2px solid var(--color-line);
}

.journey__dot--done {
  background: var(--color-ink);
  border-color: var(--color-ink);
}

.journey__dot--active {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.journey__label {
  font-size: 0.78rem;
  color: var(--color-ink-faint);
  text-align: center;
}

/* ==========================================================================
   Démonstration
   ========================================================================== */

.demo .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.demo__cta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.demo__note {
  font-size: 0.85rem;
  color: var(--color-ink-faint);
}

@media (min-width: 900px) {
  .demo .container {
    grid-template-columns: 1fr 1.1fr;
  }
}

/* ==========================================================================
   Démarche
   ========================================================================== */

.process {
  list-style: none;
  margin-top: var(--space-2xl);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  counter-reset: step;
}

.process__step {
  border-top: 1px solid var(--color-line);
  padding-top: var(--space-md);
}

.process__number {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  margin-bottom: var(--space-xs);
}

.process__step h3 {
  margin-bottom: 0.4rem;
}

.process__step p {
  max-width: 32ch;
}

@media (min-width: 900px) {
  .process {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ==========================================================================
   Contact
   ========================================================================== */

.contact__inner {
  max-width: 640px;
  text-align: center;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.contact__inner p {
  max-width: 46ch;
}

.contact__inner .btn {
  margin-top: var(--space-md);
}

.contact__placeholder-note {
  font-size: 0.8rem;
  color: var(--color-ink-faint);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--color-line);
  padding-block: var(--space-xl) var(--space-lg);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  padding-bottom: var(--space-lg);
}

.footer__brand p {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  max-width: 40ch;
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: 0.9rem;
}

.footer__nav a {
  color: var(--color-ink-soft);
}

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

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-sm);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-line);
  font-size: 0.82rem;
  color: var(--color-ink-faint);
}

.footer-bottom p {
  color: inherit;
  max-width: none;
}

@media (min-width: 700px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

/* ==========================================================================
   Animations discrètes
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

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

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

/* ==========================================================================
   Responsive — navigation mobile
   ========================================================================== */

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

  .primary-nav {
    position: fixed;
    inset: 64px 0 0 0;
    background: var(--color-paper);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-xl) clamp(1.25rem, 4vw, 3rem);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .primary-nav.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .primary-nav a {
    font-size: 1.05rem;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}

/* Ancre sous le header sticky */
section[id] {
  scroll-margin-top: 84px;
}