:root {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #142033;
  background: #fff;
  font-synthesis: none;
  --page-bg: #fff;
  --page-bg-alt: #fff;
  --page-radial-a: rgba(139, 102, 220, .09);
  --page-radial-b: rgba(177, 137, 242, .07);
  --card-bg: rgba(255, 255, 255, .38);
  --card-border: rgba(81, 133, 186, .2);
  --text-main: #142033;
  --text-muted: #607086;
  --surface: rgba(255, 255, 255, .82);
}

:root[data-theme="dark"] {
  color: #e6edf8;
  --page-bg: #0b1322;
  --page-bg-alt: #101b2d;
  --page-radial-a: rgba(91, 139, 255, .16);
  --page-radial-b: rgba(56, 214, 173, .08);
  --card-bg: rgba(12, 20, 33, .66);
  --card-border: rgba(124, 158, 214, .24);
  --text-main: #e6edf8;
  --text-muted: #a3b2c9;
  --surface: rgba(15, 23, 38, .86);
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 100% 0%, var(--page-radial-a), transparent 24rem),
    radial-gradient(circle at 0% 100%, var(--page-radial-b), transparent 28rem),
    linear-gradient(180deg, var(--page-bg), var(--page-bg-alt));
  color: var(--text-main);
}

.page-shell {
  width: min(1100px, calc(100% - 36px));
  margin: 0 auto;
  padding: 70px 0;
}

.hero {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 38px;
}

.textbooks-block {
  position: relative;
  padding: 28px;
  border: 1px solid var(--card-border);
  border-radius: 30px;
  background:
    radial-gradient(circle at 0 0, rgba(104, 194, 255, .12), transparent 32rem),
    var(--card-bg);
  box-shadow: 0 16px 36px rgba(27, 49, 75, .08), inset 0 1px 0 rgba(255,255,255,.8);
}

.textbooks-block .hero { margin-bottom: 28px; }

.tools-block {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.tools-block .salary { order: 1; }
.tools-block .calendar { order: 2; }
.tools-block .exam { order: 3; }

.hero > div { min-width: 0; }

/* Sur grand écran, le contact reste dans l’en-tête, à droite du titre. */
.hero > .whatsapp-contact {
  flex: 0 1 360px;
  width: min(360px, 36%);
  margin: 0 0 0 auto;
}

.hero-icon {
  display: grid;
  width: 82px;
  height: 82px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid rgba(255,255,255,.8);
  border-radius: 24px;
  background: linear-gradient(145deg, #1a3a64, #0b1d35);
  box-shadow: 0 16px 30px rgba(14, 38, 69, .22), inset 0 1px 0 rgba(255,255,255,.22);
  color: white;
  font-size: 42px;
}

.hero-icon svg {
  width: 58px;
  height: 58px;
  filter: drop-shadow(0 7px 8px rgba(0, 17, 39, .28));
}

.eyebrow {
  margin: 0 0 4px;
  color: #4177a5;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(35px, 5.4vw, 60px);
  letter-spacing: -.055em;
  line-height: 1;
}

.intro {
  margin: 13px 0 0;
  color: var(--text-muted);
  font-size: 18px;
}

.projects {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.whatsapp-contact {
  --whatsapp-green: #3d9a70;
  display: block;
  width: min(430px, 100%);
  margin: 0 auto;
  padding: 12px 15px;
  border: 1px solid rgba(78, 150, 111, .28);
  border-radius: 17px;
  background: linear-gradient(135deg, #f1f8f2, #fbfcf8);
  box-shadow: 0 7px 18px rgba(50, 104, 77, .09), inset 0 1px 0 #fff;
  color: #173a2a;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.whatsapp-contact:hover,
.whatsapp-contact:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(78, 150, 111, .5);
  box-shadow: 0 10px 24px rgba(50, 104, 77, .14), inset 0 1px 0 #fff;
  outline: none;
}

.whatsapp-contact-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.whatsapp-copy {
  min-width: 0;
  flex: 1;
}

.whatsapp-copy strong,
.whatsapp-copy small {
  display: block;
  min-width: 0;
}

.whatsapp-copy strong {
  font-size: 15px;
  font-weight: 850;
  line-height: 1.2;
}

.whatsapp-copy small { margin-top: 3px; color: #687b72; font-size: 11px; font-weight: 650; white-space: nowrap; }
.whatsapp-copy small em { color: var(--whatsapp-green); font-style: normal; font-weight: 800; }

.whatsapp-logo {
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(145deg, #5ebd8c, var(--whatsapp-green));
  box-shadow: 0 5px 11px rgba(50, 104, 77, .18), inset 0 1px 0 rgba(255,255,255,.55);
  color: #fff;
}

.whatsapp-logo svg { width: 27px; height: 27px; }
.whatsapp-arrow {
  margin-left: auto;
  color: var(--whatsapp-green);
  font-size: 23px;
  font-weight: 900;
}

.theme-toggle {
  position: absolute;
  top: 20px;
  right: 20px;
  z-index: 2;
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(84, 103, 131, .14);
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 5px 14px rgba(27, 49, 75, .12), inset 0 1px 0 #fff;
  color: #142033;
  font-size: 27px;
  line-height: 1;
  cursor: pointer;
}

.theme-toggle:hover,
.theme-toggle:focus-visible { background: #f7f4ff; outline: 2px solid rgba(119, 82, 197, .3); outline-offset: 2px; }

.project {
  --accent: #3f83c5;
  position: relative;
  display: flex;
  min-height: 132px;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  padding: 25px 76px 25px 28px;
  border: 1px solid rgba(70, 91, 117, .16);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: 0 12px 30px rgba(27, 49, 75, .09), inset 0 1px 0 white;
  color: inherit;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.project-group {
  --accent: #3f83c5;
  position: relative;
  min-height: 240px;
  overflow: hidden;
  padding: 26px;
  border: 1px solid rgba(70, 91, 117, .16);
  border-radius: 28px;
  background:
    radial-gradient(circle at 100% 0, color-mix(in srgb, var(--accent) 13%, transparent), transparent 48%),
    var(--surface);
  box-shadow: 0 14px 34px rgba(27, 49, 75, .1), inset 0 1px 0 white;
}

.project-group::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: 7px;
  background: var(--accent);
  content: "";
}

.project-group.collège { --accent: #20a77b; }
.project-group.primaire { --accent: #ed9f27; }

.project-group.primaire .group-choices a[dir="rtl"] {
  padding-right: 17px;
  padding-left: 39px;
  text-align: right;
}

.project-group.primaire .group-choices a[dir="rtl"] .choice-arrow {
  right: auto;
  left: 14px;
}

.group-heading {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
}

.group-heading > div {
  min-width: 0;
  flex: 1 1 auto;
  container-type: inline-size;
}

.group-icon {
  display: grid;
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 15px;
  background: linear-gradient(145deg, color-mix(in srgb, var(--accent) 88%, white), var(--accent));
  box-shadow: 0 8px 17px color-mix(in srgb, var(--accent) 23%, transparent), inset 0 1px 0 rgba(255,255,255,.48);
  color: white;
  font-size: 20px;
  font-weight: 900;
}

.group-icon-logo {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 12%, white);
  color: var(--accent);
}

.group-icon-logo svg {
  width: 48px;
  height: 48px;
}

.group-heading .cycle { display: block; margin-bottom: 3px; }

.group-heading strong {
  display: block;
  font-size: clamp(13px, 7cqw, 27px);
  letter-spacing: -.035em;
  white-space: nowrap;
}

.group-choices {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--accent) 24%, #dce4eb);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: inset 0 1px 3px rgba(20, 42, 67, .05);
}

.group-choices a {
  position: relative;
  container-type: inline-size;
  min-width: 0;
  padding: 16px 39px 15px 17px;
  color: var(--text-main);
  text-decoration: none;
  transition: background .2s ease, transform .2s ease;
}

.group-choices a + a { border-left: 1px solid color-mix(in srgb, var(--accent) 22%, #dce4eb); }

.group-choices a:hover,
.group-choices a:focus-visible {
  z-index: 1;
  background: color-mix(in srgb, var(--accent) 10%, white);
  outline: 2px solid color-mix(in srgb, var(--accent) 48%, white);
  outline-offset: -2px;
}

.group-choices a > span:first-child {
  display: block;
  font-size: 16px;
  font-weight: 850;
  letter-spacing: -.025em;
  white-space: nowrap;
  font-size: clamp(8px, 10cqw, 16px);
}

.group-choices small {
  display: block;
  overflow: hidden;
  margin-top: 3px;
  color: var(--text-muted);
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.project-group.lycée .group-choices small,
.project-group.collège .group-choices small,
.project-group.primaire .group-choices small {
  display: -webkit-box;
  overflow: hidden;
  line-height: 1.3;
  text-overflow: clip;
  white-space: normal;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.project-group.primaire .group-choices a[dir="rtl"] {
  padding-right: 17px;
  padding-left: 39px;
  text-align: left;
}

.project-group.primaire .group-choices a[dir="rtl"] .choice-arrow {
  right: 14px;
  left: auto;
}

.choice-arrow {
  position: absolute;
  top: 50%;
  right: 14px;
  display: grid;
  width: 25px;
  height: 25px;
  place-items: center;
  transform: translateY(-50%);
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 13%, white);
  color: var(--accent);
  font-size: 17px;
  font-weight: 800;
  transition: transform .2s ease;
}

.group-choices a:hover .choice-arrow { transform: translate(3px, -50%); }

.project::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: 7px;
  background: var(--accent);
  content: "";
}

.project:hover,
.project:focus-visible {
  transform: translateY(-5px);
  border-color: color-mix(in srgb, var(--accent) 55%, white);
  box-shadow: 0 20px 38px rgba(27, 49, 75, .16), inset 0 1px 0 white;
  outline: none;
}

.project.collège { --accent: #20a77b; }
.project.primaire { --accent: #ed9f27; }
.project.exam { --accent: #8b5cf6; }

.project.salary {
  --accent: #b06a28;
  grid-column: 1 / -1;
  min-height: 126px;
  padding-left: 126px;
  background:
    radial-gradient(circle at 100% 0, rgba(233, 172, 95, .18), transparent 45%),
    var(--surface);
}

.project.calendar {
  --accent: #164bc4;
  grid-column: 1 / -1;
  min-height: 126px;
  padding-left: 126px;
  background:
    radial-gradient(circle at 100% 0, rgba(102, 161, 255, .18), transparent 45%),
    var(--surface);
}

.project.salary .project-icon { color: var(--accent); }
.project.calendar .project-icon { color: var(--accent); }

.tools-block .project {
  grid-column: auto;
  min-height: 112px;
  padding: 18px 50px 18px 76px;
  border-radius: 18px;
}

.tools-block .project-icon-logo {
  left: 17px;
  width: 45px;
  height: 45px;
}

.tools-block .project-icon-logo svg {
  width: 33px;
  height: 33px;
}

.tools-block .project .cycle {
  margin-bottom: 4px;
  font-size: 10px;
}

.tools-block .project-copy {
  min-width: 0;
  flex: 1 1 auto;
  container-type: inline-size;
}

.tools-block .project-copy strong {
  font-size: clamp(10px, 6.2cqw, 18px);
  line-height: 1.15;
  letter-spacing: -.035em;
  white-space: nowrap;
}

.tools-block .project small {
  display: -webkit-box;
  overflow: hidden;
  margin-top: 4px;
  font-size: 11px;
  line-height: 1.25;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.tools-block .project .arrow {
  right: 14px;
  width: 29px;
  height: 29px;
  font-size: 19px;
}

.project-icon-logo {
  position: absolute;
  top: 50%;
  left: 28px;
  display: grid;
  width: 72px;
  height: 72px;
  place-items: center;
  transform: translateY(-50%);
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 12%, white);
  color: var(--accent);
}

.project-icon-logo svg {
  width: 54px;
  height: 54px;
}

.project.exam {
  padding-left: 126px;
}

.project.exam small {
  display: block;
  margin-top: 7px;
  color: #607086;
  font-size: 13px;
  line-height: 1.3;
}

.cycle {
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 850;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.project strong {
  font-size: clamp(21px, 3vw, 29px);
  letter-spacing: -.025em;
}

.arrow {
  position: absolute;
  top: 50%;
  right: 27px;
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  transform: translateY(-50%);
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 12%, white);
  color: var(--accent);
  font-size: 25px;
  transition: transform .2s ease;
}

.project:hover .arrow { transform: translate(4px, -50%); }

@media (max-width: 700px) {
  .page-shell {
    width: min(calc(100% - 20px), 520px);
    padding: 8px 0 30px;
  }

  .hero {
    display: grid;
    grid-template-columns: 40px minmax(0, 1fr);
    align-items: center;
    column-gap: 8px;
    row-gap: 8px;
    margin-bottom: 10px;
  }

  .hero > div { grid-column: 2; }
  .hero > .whatsapp-contact { grid-column: 1 / -1; }

  /* Sur téléphone, on conserve le bouton sous le titre, comme auparavant. */
  .hero > .whatsapp-contact {
    flex: 1 1 100%;
    width: 100%;
    margin: 0 auto 18px;
  }

  .hero-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    font-size: 21px;
  }

  .hero-icon svg { width: 29px; height: 29px; }

  .eyebrow {
    margin-bottom: 2px;
    font-size: 9px;
    letter-spacing: .1em;
  }

  h1 {
    font-size: clamp(24px, 8vw, 32px);
    letter-spacing: -.045em;
  }

  .intro {
    margin-top: 4px;
    font-size: 12px;
    line-height: 1.25;
  }

  .projects {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .textbooks-block {
    padding: 10px;
    border-radius: 22px;
  }

  .textbooks-block .hero { margin-bottom: 10px; }

  .tools-block {
    grid-template-columns: 1fr;
    gap: 8px;
    margin-top: 12px;
  }

  .project-group {
    min-height: 0;
    padding: 15px;
    border-radius: 20px;
  }

  .project-group::before,
  .project::before { width: 5px; }

  .group-heading {
    gap: 10px;
    margin-bottom: 12px;
  }

  .group-icon {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    font-size: 16px;
  }

  .group-icon-logo {
    width: 46px;
    height: 46px;
    border-radius: 50%;
  }

  .group-icon-logo svg {
    width: 35px;
    height: 35px;
  }

  .group-heading .cycle {
    margin-bottom: 1px;
    font-size: 10px;
  }

  .group-heading strong {
    font-size: clamp(13px, 7cqw, 21px);
    line-height: 1.12;
  }

  .group-choices {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-radius: 14px;
  }

  .group-choices a {
    min-height: 58px;
    padding: 11px 28px 10px 12px;
  }

  .group-choices a + a {
    border-top: 0;
    border-left: 1px solid color-mix(in srgb, var(--accent) 22%, #dce4eb);
  }

  .project-group.primaire .group-choices a[dir="rtl"] {
    padding-right: 28px;
    padding-left: 12px;
    text-align: left;
  }

  .project-group.primaire .group-choices a[dir="rtl"] .choice-arrow {
    right: 7px;
    left: auto;
  }

  .project-group.primaire .group-choices a {
    min-height: 70px;
  }

  .group-choices a > span:first-child {
    font-size: clamp(8px, 10cqw, 15px);
    font-weight: 900;
    line-height: 1.15;
  }

  .group-choices small {
    margin-top: 2px;
    font-size: clamp(8px, 2.4vw, 9.5px);
    line-height: 1.15;
  }

  .choice-arrow {
    right: 7px;
    width: 21px;
    height: 21px;
    font-size: 14px;
  }

  .project {
    min-height: 82px;
    padding: 16px 57px 16px 19px;
    border-radius: 18px;
  }

  .project.exam {
    padding-left: 78px;
  }

  .project.salary {
    padding-left: 78px;
  }

  .project.calendar {
    padding-left: 78px;
  }

  .tools-block .project,
  .tools-block .project.salary,
  .tools-block .project.calendar {
    min-height: 88px;
    padding: 14px 50px 14px 66px;
  }

  .tools-block .project-icon-logo {
    left: 14px;
    width: 42px;
    height: 42px;
  }

  .tools-block .project-icon-logo svg {
    width: 31px;
    height: 31px;
  }

  .project-icon-logo {
    left: 18px;
    width: 48px;
    height: 48px;
  }

  .project-icon-logo svg {
    width: 37px;
    height: 37px;
  }

  .project.exam small {
    margin-top: 4px;
    font-size: 9px;
    line-height: 1.15;
  }

  .tools-block .project small {
    font-size: 9px;
    line-height: 1.15;
  }

  .project .cycle {
    margin-bottom: 4px;
    font-size: 10px;
  }

  .project strong {
    font-size: clamp(17px, 5vw, 21px);
    line-height: 1.15;
  }

  .project .arrow {
    right: 17px;
    width: 32px;
    height: 32px;
    font-size: 20px;
  }

  .whatsapp-contact {
    margin: 0 auto 18px;
    padding: 10px 12px;
    border-radius: 15px;
  }

  .whatsapp-logo { width: 36px; height: 36px; }
  .whatsapp-logo svg { width: 23px; height: 23px; }
  .whatsapp-contact-row { gap: 9px; }
  .whatsapp-copy strong { font-size: 13px; }
  .whatsapp-copy small {
    font-size: 10px;
    line-height: 1.2;
    white-space: normal;
  }
  .whatsapp-arrow { font-size: 20px; }

  .theme-toggle {
    top: 9px;
    right: 9px;
    width: 32px;
    height: 32px;
    font-size: 21px;
  }
}

@media (max-width: 360px) {
  .page-shell { width: calc(100% - 14px); }
  .hero { grid-template-columns: 38px minmax(0, 1fr); column-gap: 6px; }
  .hero-icon { width: 38px; height: 38px; }
  .hero-icon svg { width: 27px; height: 27px; }
  .intro { font-size: 12px; }
  .group-choices small { font-size: 8px; }
  .tools-block .project small { font-size: 8.5px; }
  .project-group { padding: 12px; }
  .group-choices a { padding-left: 9px; }
  .whatsapp-contact { padding: 9px 10px; }
  .whatsapp-contact-row { gap: 6px; }
  .whatsapp-logo { width: 32px; height: 32px; }
  .whatsapp-logo svg { width: 21px; height: 21px; }
  .whatsapp-copy strong { font-size: 12px; }
  .whatsapp-copy small { font-size: 9px; }
  .whatsapp-arrow { font-size: 18px; }
}