/* IMANA - Design System
   Version: 1.0
   Architecture: Mobile-first, CSS custom properties, 8px grid*/

/*  GOOGLE FONTS  */
@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=Inter:wght@400;500;600&display=swap');

/*  RESET  */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: hidden; }
body { min-height: 100vh; line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img, video, svg { display: block; max-width: 100%; }
svg[stroke="currentColor"] { stroke-linecap: round; stroke-linejoin: round; }
button, input, select, textarea { font: inherit; }
a { color: inherit; }
ul, ol { list-style: none; }

/*  TOKENS  */
:root {
  /* Palette principale */
  --blue-deep:      #081B2C;
  --blue-main:      #102A43;
  --blue-mid:       #1A3F5E;
  --blue-light:     #EEF4F8;
  --blue-xlight:    #F5F9FC;

  --gold:           #C59A4A;
  --gold-light:     #D4AF6A;
  --gold-dark:      #A8823A;

  --green-trust:    #16705A;
  --green-success:  #18835E;
  --green-light:    #EBF5F1;

  --cream:          #F8F6F1;
  --white:          #FFFFFF;

  --text-primary:   #17212B;
  --text-secondary: #4A5568;
  --text-muted:     #718096;
  --text-inverse:   #FFFFFF;

  --border:         #DCE3E8;
  --border-light:   #EDF2F7;
  --border-focus:   #C59A4A;

  --error:          #B42318;
  --error-bg:       #FEF2F2;
  --warning:        #B76E00;
  --warning-bg:     #FFFBEB;
  --success:        #16705A;
  --success-bg:     #ECFDF5;

  /* Surface */
  --bg-page:        #FFFFFF;
  --bg-subtle:      #F8F6F1;
  --bg-card:        #FFFFFF;
  --bg-dark:        #081B2C;
  --bg-dark-mid:    #102A43;

  /*  TYPOGRAPHIE  */
  --font-display:   'Manrope', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body:      'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;

  /* Échelle - mobile */
  --text-xs:    0.75rem;   /* 12px */
  --text-sm:    0.875rem;  /* 14px */
  --text-base:  1rem;      /* 16px */
  --text-lg:    1.125rem;  /* 18px */
  --text-xl:    1.25rem;   /* 20px */
  --text-2xl:   1.5rem;    /* 24px */
  --text-3xl:   1.875rem;  /* 30px */
  --text-4xl:   2.25rem;   /* 36px - H1 mobile */
  --text-5xl:   3rem;      /* 48px */
  --text-6xl:   3.5rem;    /* 56px - H1 desktop */

  --leading-tight:  1.25;
  --leading-snug:   1.375;
  --leading-normal: 1.55;
  --leading-relaxed:1.7;

  --fw-normal: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-extrabold: 800;

  /*  ESPACEMENT (8px grid)  */
  --space-1:  0.25rem;  /* 4px */
  --space-2:  0.5rem;   /* 8px */
  --space-3:  0.75rem;  /* 12px */
  --space-4:  1rem;     /* 16px */
  --space-5:  1.25rem;  /* 20px */
  --space-6:  1.5rem;   /* 24px */
  --space-8:  2rem;     /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  --space-32: 8rem;     /* 128px */

  /* Sections */
  --section-gap: var(--space-16);   /* mobile 64px */
  --section-gap-lg: var(--space-24);/* desktop 96px */

  /*  LAYOUT  */
  --container-max:  1280px;
  --container-px:   var(--space-5);    /* 20px mobile */
  --container-px-md: var(--space-8);   /* 32px tablet */
  --container-px-lg: var(--space-10);  /* 40px desktop */

  /*  FORMES  */
  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   16px;
  --radius-xl:   20px;
  --radius-full: 9999px;

  /* Boutons */
  --btn-height:   52px;
  --btn-height-sm: 40px;
  --btn-px:       var(--space-6);
  --btn-radius:   10px;

  /*  OMBRES  */
  --shadow-sm:  0 1px 3px rgba(16,42,67,0.08), 0 1px 2px rgba(16,42,67,0.04);
  --shadow-md:  0 4px 12px rgba(16,42,67,0.10), 0 2px 4px rgba(16,42,67,0.06);
  --shadow-lg:  0 8px 24px rgba(16,42,67,0.12), 0 4px 8px rgba(16,42,67,0.08);
  --shadow-xl:  0 16px 48px rgba(16,42,67,0.16), 0 8px 16px rgba(16,42,67,0.10);
  --shadow-card: 0 2px 8px rgba(16,42,67,0.08), 0 1px 3px rgba(16,42,67,0.05);
  --shadow-card-hover: 0 8px 32px rgba(16,42,67,0.14), 0 4px 12px rgba(16,42,67,0.08);

  /*  TRANSITIONS  */
  --transition-fast:   150ms ease;
  --transition-base:   200ms ease;
  --transition-slow:   300ms ease;
  --transition-reveal: 400ms cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /*  Z-INDEX  */
  --z-base:    0;
  --z-above:   1;
  --z-dropdown:10;
  --z-sticky:  20;
  --z-overlay: 30;
  --z-modal:   40;
  --z-toast:   50;
  --z-whatsapp:60;
}

/*  BODY  */
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--text-primary);
  background: var(--bg-page);
  line-height: var(--leading-normal);
}

/*  CONTAINER  */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-px);
}
@media (min-width: 768px) { .container { padding-inline: var(--container-px-md); } }
@media (min-width: 1024px) { .container { padding-inline: var(--container-px-lg); } }

/*  TYPOGRAPHIE  */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  line-height: var(--leading-tight);
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(var(--text-4xl), 5vw, var(--text-6xl)); font-weight: var(--fw-extrabold); }
h2 { font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl)); }
h3 { font-size: clamp(var(--text-xl), 2.5vw, var(--text-3xl)); }
h4 { font-size: clamp(var(--text-lg), 2vw, var(--text-2xl)); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p { max-width: 70ch; line-height: var(--leading-relaxed); }
.lead { font-size: var(--text-lg); color: var(--text-secondary); }

/*  LIENS  */
a:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/*  EYEBROW / LABEL  */
.eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
}
.eyebrow-green { color: var(--green-trust); }

/*  BOUTONS  */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: var(--btn-height);
  padding-inline: var(--btn-px);
  border-radius: var(--btn-radius);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: var(--fw-semibold);
  line-height: 1;
  cursor: pointer;
  text-decoration: none;
  border: 2px solid transparent;
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  min-width: 44px;
  user-select: none;
}
.btn:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}
.btn svg { flex-shrink: 0; transition: transform var(--transition-base); }
.btn:hover svg { transform: translateX(3px); }
.btn:active { transform: scale(0.98); }

/* Primaire */
.btn-primary {
  background: var(--blue-main);
  color: var(--white);
  border-color: var(--blue-main);
}
.btn-primary:hover {
  background: var(--blue-deep);
  border-color: var(--blue-deep);
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

/* Or / Gold */
.btn-gold {
  background: var(--gold);
  color: var(--white);
  border-color: var(--gold);
}
.btn-gold:hover {
  background: var(--gold-dark);
  border-color: var(--gold-dark);
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

/* Secondaire / Outline */
.btn-outline {
  background: transparent;
  color: var(--blue-main);
  border-color: var(--blue-main);
}
.btn-outline:hover {
  background: var(--blue-main);
  color: var(--white);
  transform: translateY(-1px);
}

/* Outline blanc (sur fond sombre) */
.btn-outline-white {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.6);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--white);
}

/* WhatsApp */
.btn-whatsapp {
  background: #25D366;
  color: var(--white);
  border-color: #25D366;
}
.btn-whatsapp:hover {
  background: #1EBE5B;
  border-color: #1EBE5B;
  box-shadow: 0 4px 16px rgba(37,211,102,0.35);
  transform: translateY(-1px);
}

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}
.btn-ghost:hover { background: var(--bg-subtle); color: var(--text-primary); }

/* Tailles */
.btn-sm { height: var(--btn-height-sm); padding-inline: var(--space-4); font-size: var(--text-sm); }
.btn-lg { height: 60px; padding-inline: var(--space-8); font-size: var(--text-sm); }

/*  BADGES  */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--fw-semibold);
  font-family: var(--font-display);
  letter-spacing: 0.04em;
}
.badge-blue { background: var(--blue-light); color: var(--blue-main); }
.badge-gold { background: rgba(197,154,74,0.12); color: var(--gold-dark); }
.badge-green { background: var(--green-light); color: var(--green-trust); }
.badge-white { background: rgba(255,255,255,0.15); color: var(--white); border: 1px solid rgba(255,255,255,0.3); }

/*  CARTES  */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-slow);
  overflow: hidden;
}
.card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
  border-color: var(--border);
}
.card-body { padding: var(--space-6); }

/*  SECTIONS  */
.section {
  padding-block: var(--section-gap);
}
.section-dark {
  background: var(--bg-dark);
  color: var(--text-inverse);
}
.section-dark h1, .section-dark h2, .section-dark h3,
.section-dark h4, .section-dark h5, .section-dark h6 {
  color: var(--white);
}
.section-cream { background: var(--cream); }
.section-blue-light { background: var(--blue-light); }

/*  GRILLES  */
.grid-2 { display: grid; gap: var(--space-6); }
.grid-3 { display: grid; gap: var(--space-6); }
.grid-4 { display: grid; gap: var(--space-6); }

@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 768px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/*  ACCORDÉON  */
.accordion { border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }
.accordion + .accordion { margin-top: var(--space-3); }

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  background: var(--white);
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  transition: all var(--transition-base);
  min-height: 56px;
}
.accordion-trigger:hover { background: var(--bg-subtle); }
.accordion-trigger:focus-visible { outline: 2px solid var(--gold); outline-offset: -2px; }

/* Titre sémantique (h3) enveloppant le bouton d'accordéon : ne doit rien changer
   visuellement, le bouton conserve tout le style. */
.accordion-heading { margin: 0; font: inherit; }

.accordion-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--gold);
  transition: transform var(--transition-base);
}
.accordion-trigger[aria-expanded="true"] .accordion-icon { transform: rotate(180deg); }

.accordion-content {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition-slow);
  background: var(--bg-subtle);
}
.accordion-heading:has(.accordion-trigger[aria-expanded="true"]) + .accordion-content {
  grid-template-rows: 1fr;
}
.accordion-inner {
  overflow: hidden;
  padding: 0 var(--space-6);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}
.accordion-heading:has(.accordion-trigger[aria-expanded="true"]) + .accordion-content .accordion-inner {
  padding-block: var(--space-5);
}

/*  FORMULAIRES  */
.form-group { display: flex; flex-direction: column; gap: var(--space-2); }
.form-label {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
}
.form-label .required { color: var(--error); margin-left: 2px; }

.form-control {
  height: 52px;
  padding-inline: var(--space-4);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  color: var(--text-primary);
  background: var(--white);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  width: 100%;
}
.form-control::placeholder { color: var(--text-muted); }
.form-control:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(197,154,74,0.15);
}
.form-control:invalid:not(:placeholder-shown) { border-color: var(--error); }
.form-control.error { border-color: var(--error); }

textarea.form-control {
  height: auto;
  min-height: 120px;
  padding-block: var(--space-4);
  resize: vertical;
}
select.form-control { padding-right: var(--space-10); appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%234A5568' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
}

.form-error {
  font-size: var(--text-sm);
  color: var(--error);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.form-hint { font-size: var(--text-sm); color: var(--text-muted); }

/* Checkbox / Radio */
.form-check {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
}
.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 2px;
  accent-color: var(--blue-main);
  cursor: pointer;
}
.form-check-label { font-size: var(--text-sm); color: var(--text-secondary); line-height: var(--leading-normal); }

/*  BREADCRUMB  */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-muted);
  padding-block: var(--space-4);
}
.breadcrumb a { color: var(--text-secondary); text-decoration: none; }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb-sep { color: var(--border); }

/*  ALERT  */
.alert {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid;
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
}
.alert-info { background: var(--blue-light); border-color: #BFD9EC; color: var(--blue-main); }
.alert-success { background: var(--success-bg); border-color: #A7F3D0; color: var(--green-trust); }
.alert-warning { background: var(--warning-bg); border-color: #FDE68A; color: var(--warning); }
.alert-error { background: var(--error-bg); border-color: #FECACA; color: var(--error); }
.alert-icon { flex-shrink: 0; width: 20px; height: 20px; margin-top: 1px; }

/*  RÉASSURANCE / TRUST STRIP  */
.trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
}
.trust-icon {
  width: 20px;
  height: 20px;
  color: var(--green-trust);
  flex-shrink: 0;
}

/*  STAT COUNTER  */
.stat-value {
  font-family: var(--font-display);
  font-weight: var(--fw-extrabold);
  line-height: 1;
  color: var(--blue-main);
}
.stat-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-top: var(--space-1);
}

/*  SKIP LINK  */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--blue-main);
  color: var(--white);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-weight: var(--fw-semibold);
  text-decoration: none;
  z-index: 999;
  transition: top 0.1s;
}
.skip-link:focus { top: var(--space-4); }

/*  DIVIDER  */
.divider { border: none; border-top: 1px solid var(--border); margin-block: var(--space-8); }

/*  SECTION HEADER  */
.section-header { margin-bottom: var(--space-12); }
.section-header--center { text-align: center; }
.section-header--center p { margin-inline: auto; }
.section-header .eyebrow { margin-bottom: var(--space-3); }
.section-header h2 { margin-bottom: var(--space-4); }
.section-header p { color: var(--text-secondary); font-size: var(--text-lg); }

/*  ANIMATIONS (Reveal au scroll)  */
[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-reveal), transform var(--transition-reveal);
}
[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}
[data-reveal="left"] { transform: translateX(-20px); }
[data-reveal="left"].revealed { transform: translateX(0); }
[data-reveal="right"] { transform: translateX(20px); }
[data-reveal="right"].revealed { transform: translateX(0); }
[data-reveal="scale"] { transform: scale(0.95); }
[data-reveal="scale"].revealed { transform: scale(1); }

/* Délais cascade */
[data-delay="100"] { transition-delay: 100ms; }
[data-delay="150"] { transition-delay: 150ms; }
[data-delay="200"] { transition-delay: 200ms; }
[data-delay="300"] { transition-delay: 300ms; }
[data-delay="400"] { transition-delay: 400ms; }
[data-delay="500"] { transition-delay: 500ms; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/*  UTILITIES  */
.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;
}
.text-center { text-align: center; }
.text-balance { text-wrap: balance; }
.text-gradient {
  background: linear-gradient(135deg, var(--blue-main) 0%, var(--gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.gold-underline {
  position: relative;
  display: inline;
}
.gold-underline::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0; right: 0;
  height: 3px;
  background: var(--gold);
  border-radius: 2px;
}
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }
.hidden { display: none !important; }
.visually-hidden { @extend .sr-only; }

@media (min-width: 768px) { .hidden-desktop { display: none !important; } }
@media (max-width: 767px) { .hidden-mobile { display: none !important; } }