:root {
  --color-primary: #2f49b6;
  --color-primary-dark: #21378e;
  --color-primary-soft: #e8edff;
  --color-accent: #6d83e6;
  --color-bg: #f7f8fc;
  --color-surface: #ffffff;
  --color-surface-alt: #f1f4fb;
  --color-text: #182033;
  --color-muted: #58627a;
  --color-border: #dbe2f1;
  --color-success: #dff4e8;
  --color-warning: #fff2d9;
  --shadow-sm: 0 8px 24px rgba(18, 34, 84, 0.08);
  --shadow-lg: 0 20px 60px rgba(25, 42, 94, 0.16);
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --container: 1180px;
  --header-height: 78px;
  --contact-email: "support@my-memo-master.com";
  --project-name: "MyMemoMaster";
  --newsletter-frequency: "rapport trimestriel";
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--color-text);
  background:
    radial-gradient(circle at top left, rgba(109, 131, 230, 0.14), transparent 28%),
    linear-gradient(180deg, #fbfcff 0%, var(--color-bg) 100%);
  line-height: 1.6;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }

.container {
  width: min(var(--container), calc(100% - 2rem));
  margin: 0 auto;
}

.section {
  padding: 5.5rem 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.76);
  backdrop-filter: blur(14px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 2.5rem;
}

.section-heading h2 {
  margin: 0.8rem 0 0.9rem;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
}

.section-heading p {
  margin: 0;
  color: var(--color-muted);
  font-size: 1.05rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(248, 249, 253, 0.85);
  border-bottom: 1px solid rgba(219, 226, 241, 0.9);
  backdrop-filter: blur(18px);
}

.nav-wrap {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  font-weight: 800;
  font-size: 1.08rem;
}

.brand-mark {
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 14px;
  display: grid;
  place-items: center;
  padding: 0.35rem;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(219, 226, 241, 0.9);
  box-shadow: var(--shadow-sm);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: 12px;
  width: 2.9rem;
  height: 2.9rem;
  padding: 0;
}

.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after {
  content: "";
  display: block;
  width: 1.2rem;
  height: 2px;
  margin: 0.23rem auto;
  background: var(--color-text);
  border-radius: 999px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.3rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  color: var(--color-muted);
  font-weight: 500;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--color-primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 3rem;
  padding: 0.85rem 1.35rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), #5570d9);
  color: #fff;
  box-shadow: 0 14px 30px rgba(47, 73, 182, 0.24);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  box-shadow: 0 18px 36px rgba(47, 73, 182, 0.28);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.85);
  color: var(--color-primary-dark);
  border-color: var(--color-border);
}

.btn[disabled] {
  cursor: wait;
  opacity: 0.72;
  box-shadow: none;
  transform: none;
}

.btn[disabled]:hover,
.btn[disabled]:focus-visible {
  box-shadow: none;
  transform: none;
}

/* Hero */
.hero {
  padding: 4.5rem 0 4rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2rem;
  align-items: center;
}

.hero-copy h1 {
  margin: 1rem 0 1rem;
  font-size: clamp(2.6rem, 5vw, 4.6rem);
  line-height: 1.03;
  letter-spacing: -0.03em;
}

.hero-copy p {
  margin: 0;
  max-width: 640px;
  color: var(--color-muted);
  font-size: 1.12rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.95rem;
  margin: 2rem 0 1rem;
}

.hero-note {
  color: var(--color-muted);
  font-size: 0.98rem;
}

.hero-visual {
  position: relative;
  padding: 1rem;
}

.hero-photo-card {
  position: relative;
  overflow: hidden;
  border-radius: 32px;
  background:
    radial-gradient(circle at top left, rgba(109, 131, 230, 0.22), transparent 30%),
    linear-gradient(180deg, rgba(255,255,255,0.98), rgba(238, 243, 255, 0.96));
  border: 1px solid rgba(219, 226, 241, 0.92);
  box-shadow: var(--shadow-lg);
}

.hero-photo-card::before {
  content: "";
  position: absolute;
  inset: -18% auto auto -14%;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(109, 131, 230, 0.22), transparent 72%);
}

.hero-photo {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* Problem / value */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.card {
  padding: 1.7rem;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid rgba(219, 226, 241, 0.9);
  box-shadow: var(--shadow-sm);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.8rem;
  font-size: 1.3rem;
}

.list {
  list-style: none;
  padding: 0;
  margin: 1.1rem 0 0;
  display: grid;
  gap: 0.9rem;
}

.list li {
  display: flex;
  align-items: start;
  gap: 0.8rem;
  color: var(--color-muted);
}

.list strong { color: var(--color-text); }

.bullet {
  flex-shrink: 0;
  width: 1.6rem;
  height: 1.6rem;
  margin-top: 0.15rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  font-size: 0.9rem;
  font-weight: 800;
}

/* Features */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.2rem;
}

.feature-card {
  padding: 1.6rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(245,248,255,0.98));
  border: 1px solid rgba(219, 226, 241, 0.95);
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.feature-card:hover,
.feature-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 20px 38px rgba(31, 49, 113, 0.11);
}

.feature-icon {
  width: 3rem;
  height: 3rem;
  margin-bottom: 1rem;
  display: grid;
  place-items: center;
  border-radius: 15px;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  font-size: 1.3rem;
}

.feature-card h3 { margin: 0 0 0.65rem; }
.feature-card p { margin: 0; color: var(--color-muted); }

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.step-card {
  position: relative;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.step-number {
  display: inline-grid;
  place-items: center;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  font-weight: 800;
  margin-bottom: 1rem;
}

/* Audience */
.audience-grid,
.beta-grid,
.engage-grid,
.footer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.3rem;
}

.badge-soft {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.7rem;
  background: var(--color-warning);
  border-radius: 999px;
  color: #7b5a19;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.beta-panel {
  background: linear-gradient(180deg, #fff, #f8faff);
}

.beta-note {
  padding: 1rem 1.1rem;
  background: var(--color-surface-alt);
  border-radius: 16px;
  color: var(--color-muted);
  margin-top: 1rem;
}

/* Forms */
.engage-card {
  padding: 2rem;
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(245,248,255,0.96));
  border: 1px solid rgba(219, 226, 241, 0.95);
  box-shadow: var(--shadow-sm);
}

form {
  display: grid;
  gap: 1rem;
  margin-top: 1.2rem;
}

label {
  display: grid;
  gap: 0.45rem;
  font-weight: 600;
}

input,
textarea {
  width: 100%;
  padding: 0.95rem 1rem;
  border-radius: 14px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(47, 73, 182, 0.12);
}

textarea {
  min-height: 154px;
  resize: vertical;
}

.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  font-size: 0.95rem;
  color: var(--color-muted);
}

.checkbox-row input {
  width: 1.1rem;
  height: 1.1rem;
  margin-top: 0.25rem;
}

.fine-print {
  color: var(--color-muted);
  font-size: 0.95rem;
  margin-top: 0.9rem;
}

.status-message {
  display: none;
  margin-top: 0.85rem;
  padding: 0.9rem 1rem;
  border-radius: 14px;
  background: var(--color-success);
  color: #175c36;
  font-weight: 600;
}

.status-message.is-visible {
  display: block;
}

.status-message.is-error {
  background: #ffe7e7;
  color: #9f1c1c;
}

/* FAQ */
.faq-list {
  display: grid;
  gap: 1rem;
}

details {
  padding: 1.2rem 1.35rem;
  border-radius: 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

summary::-webkit-details-marker { display: none; }

details p {
  margin: 0.9rem 0 0;
  color: var(--color-muted);
}

/* Footer */
.site-footer {
  padding: 2rem 0 3rem;
  border-top: 1px solid rgba(219, 226, 241, 0.9);
  background: rgba(255,255,255,0.82);
}

.footer-brand p,
.footer-links a,
.footer-meta {
  color: var(--color-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.footer-tag {
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  background: var(--color-surface-alt);
  color: var(--color-primary-dark);
  font-size: 0.9rem;
  font-weight: 700;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-grid,
  .grid-2,
  .feature-grid,
  .steps,
  .audience-grid,
  .beta-grid,
  .engage-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero { padding-top: 3.4rem; }
}

@media (max-width: 760px) {
  .nav-toggle { display: inline-block; }

  .nav-menu {
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: calc(100% + 0.5rem);
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    border-radius: 20px;
    background: rgba(255,255,255,0.97);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.is-open { display: flex; }
  .nav-links {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-actions .btn,
  .nav-menu .btn { width: 100%; }

  .feature-grid,
  .steps { grid-template-columns: 1fr; }

  .section { padding: 4.3rem 0; }
}