/* =========================================================
   SIMERTEL — Styles globaux
   Couleurs de référence :
   - Bleu : #363397
   - Rouge : #BF0E11
   - Fond / textes neutres : blanc
   Placeholders images/logos : jaune #FFFF00
   ========================================================= */

:root {
  --blue: #363397;
  --red: #bf0e11;
  /* Variantes plus douces (uniquement pour les backgrounds) */
  --blue-bg: #3a4bb5;
  --red-bg: #c93235;
  --white: #ffffff;
  --placeholder: #ffff00;

  --text: #0f172a;
  --muted: #475569;
  --border: rgba(15, 23, 42, 0.12);
  --shadow: 0 10px 30px rgba(2, 6, 23, 0.12);

  --radius: 16px;
  --radius-sm: 12px;

  --container: 1120px;

  --space-1: 8px;
  --space-2: 12px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 64px;

  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica,
    Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

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

html:focus-within {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
}

a {
  color: var(--blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

h1,
h2,
h3 {
  color: var(--blue);
}

/* Accessibilité : focus visible */
:focus-visible {
  outline: 3px solid rgba(54, 51, 151, 0.45);
  outline-offset: 3px;
  border-radius: 10px;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: 12px;
  z-index: 9999;
  padding: 10px 12px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

/* =========================
   Helpers
   ========================= */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

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

.small {
  font-size: 0.92rem;
}

.kicker {
  display: inline-block;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
  color: var(--red);
  margin: 0 0 var(--space-2);
}

.lead {
  font-size: clamp(1.02rem, 1.2vw + 0.8rem, 1.2rem);
  color: var(--muted);
  margin: var(--space-2) 0 0;
}

.h3 {
  font-size: 1.2rem;
  margin: 0;
}

/* =========================
   Header / Navigation
   ========================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: var(--space-4);
  position: relative; /* ancre le menu mobile en position absolue */
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-text {
  font-weight: 800;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* Menu responsive : mobile (details/summary) + desktop (nav) */
.nav-details {
  position: relative;
}

.nav-toggle {
  list-style: none;
  cursor: pointer;
  user-select: none;
  font-weight: 700;
  padding: 0;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--white);
  margin-right: 24px;
}

.nav-toggle::-webkit-details-marker {
  display: none;
}

/* Icône burger (3 barres) */
.nav-toggle-icon {
  width: 18px;
  height: 2px;
  background: var(--blue);
  border-radius: 999px;
  position: relative;
  transition: background 160ms ease;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--blue);
  border-radius: 999px;
  transition: transform 160ms ease, top 160ms ease;
}

.nav-toggle-icon::before {
  top: -6px;
}

.nav-toggle-icon::after {
  top: 6px;
}

/* Quand le menu est ouvert : burger -> croix */
.nav-details[open] .nav-toggle-icon {
  background: transparent;
}

.nav-details[open] .nav-toggle-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-details[open] .nav-toggle-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

/* Mobile : menu déroulant dans <details> */
.nav-details .site-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px;
  margin-top: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
  min-width: min(320px, 82vw);
  max-height: min(70vh, 420px);
  overflow: auto;
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  z-index: 60;
}

.nav-link {
  padding: 10px 12px;
  border-radius: 12px;
  font-weight: 650;
  color: var(--text);
}

.nav-link:hover {
  background: rgba(54, 51, 151, 0.06);
  text-decoration: none;
}

.nav-link.is-active {
  background: rgba(191, 14, 17, 0.1);
  border: 1px solid rgba(191, 14, 17, 0.25);
}

/* Desktop : nav toujours visible (hors <details>) */
.site-nav--desktop {
  display: none;
  align-items: center;
  gap: 8px;
}

/* Sous-navigation Expertise */
.subnav {
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.65);
}

.subnav-inner {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 10px 0;
}

.subnav-link {
  white-space: nowrap;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--white);
  font-weight: 650;
  color: var(--text);
}

.subnav-link.is-active {
  background: var(--red-bg); /* variante plus douce */
  border-color: rgba(191, 14, 17, 0.9);
  color: var(--white);
  box-shadow: 0 10px 18px rgba(191, 14, 17, 0.22);
}

/* Desktop : nav inline, toggle caché */
@media (max-width: 899px) {
  /* Le burger est en absolu pour ne pas impacter la hauteur du header */
  .header-inner {
    /* alignement avec le contenu : padding horizontal = 24px */
    padding: 14px var(--space-4);
  }

  /* Réserve de place pour le bouton burger sans décaler le header */
  .brand {
    padding-right: 56px;
  }

  .nav-details {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
  }

  /* Sous-navigation Expertise (tabs) : alignement mobile */
  .subnav-inner {
    padding: 10px var(--space-4);
  }
}

@media (min-width: 900px) {
  .nav-details {
    display: none;
  }

  .site-nav--desktop {
    display: flex;
  }

  .site-nav--desktop .nav-link {
    padding: 10px 14px;
    border-radius: 12px;
  }
}

/* =========================
   Placeholders images / logos
   ========================= */
.placeholder-media {
  background: var(--placeholder); /* #FFFF00 */
  border: 1px dashed rgba(15, 23, 42, 0.25);
  color: rgba(15, 23, 42, 0.8);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  user-select: none;
}

/* Logo réel (remplace le placeholder jaune du header) */
.site-logo {
  width: 200px;
  height: auto;
  object-fit: contain;
  display: block;
}

.placeholder-hero {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
}

.hero-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.page-hero-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  min-height: 220px;
  border-radius: var(--radius);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
}

/* Placeholder "IMAGE" dans les hero de page (services/références/contact) */
.placeholder-page-hero {
  width: 100%;
  aspect-ratio: 4 / 3;
  min-height: 220px;
  border-radius: var(--radius);
}

.tile-image {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.placeholder-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  font-size: 0.68rem;
}

/* Icône réelle (Font Awesome) dans les tuiles */
.tile-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.tile-icon i {
  font-size: 1.35rem;
  line-height: 1;
}

.placeholder-logo-tile {
  width: 100%;
  aspect-ratio: 3 / 2;
  border-radius: var(--radius);
  font-size: 0.78rem;
}

/* =========================
   Sections / Layout
   ========================= */
.hero {
  padding: var(--space-7) 0 var(--space-6);
  background: radial-gradient(
      900px 400px at 10% 0%,
      rgba(54, 51, 151, 0.14),
      transparent 60%
    ),
    radial-gradient(
      900px 400px at 90% 20%,
      rgba(191, 14, 17, 0.1),
      transparent 55%
    ),
    linear-gradient(#ffffff, #ffffff);
}

.hero-inner {
  display: grid;
  gap: var(--space-5);
  align-items: center;
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.6rem, 2.2vw + 1rem, 2.4rem);
  line-height: 1.15;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: var(--space-4);
}

.page-hero {
  padding: var(--space-6) 0 var(--space-5);
  background: radial-gradient(
      800px 360px at 15% 0%,
      rgba(54, 51, 151, 0.12),
      transparent 60%
    ),
    linear-gradient(#ffffff, #ffffff);
}

.page-hero-inner {
  display: grid;
  gap: var(--space-5);
  align-items: center;
}

.page-hero h1 {
  margin: 0;
  font-size: clamp(1.5rem, 1.8vw + 1rem, 2.2rem);
  line-height: 1.15;
}

.section {
  padding: var(--space-6) 0;
}

.section-alt {
  background: linear-gradient(
    180deg,
    rgba(54, 51, 151, 0.07),
    rgba(255, 255, 255, 1) 70%
  );
  border-top: 1px solid rgba(54, 51, 151, 0.12);
  border-bottom: 1px solid rgba(54, 51, 151, 0.12);
}

.section-head {
  display: grid;
  gap: 6px;
  margin-bottom: var(--space-4);
}

.section-head h2 {
  margin: 0;
  font-size: 1.5rem;
  position: relative;
}

.section-head h2::after {
  content: "";
  display: block;
  width: 56px;
  height: 4px;
  margin-top: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--red), var(--blue));
}

.section-head p {
  margin: 0;
  color: var(--muted);
}

.card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    180deg,
    rgba(54, 51, 151, 0.06),
    rgba(255, 255, 255, 1) 55%
  );
  border: 1px solid rgba(54, 51, 151, 0.14);
  border-radius: var(--radius);
  padding: var(--space-4);
  box-shadow: 0 1px 0 rgba(2, 6, 23, 0.02);
}

/* Variantes "fond complet" (pas de bande en haut) */
.card.card--blue {
  background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.14),
      rgba(255, 255, 255, 0) 58%
    ),
    var(--blue-bg);
  border-color: rgba(54, 51, 151, 0.9);
  color: var(--white);
}

.card.card--red {
  background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.14),
      rgba(255, 255, 255, 0) 58%
    ),
    var(--red-bg);
  border-color: rgba(191, 14, 17, 0.9);
  color: var(--white);
}

.card.card--blue h1,
.card.card--blue h2,
.card.card--blue h3,
.card.card--red h1,
.card.card--red h2,
.card.card--red h3 {
  color: var(--white);
}

.card.card--blue .muted,
.card.card--red .muted,
.card.card--blue .list,
.card.card--red .list {
  color: rgba(255, 255, 255, 0.84);
}

.card.card--blue a,
.card.card--red a {
  color: rgba(255, 255, 255, 0.95);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.card.card--blue a:hover,
.card.card--red a:hover {
  color: var(--white);
}

.panel {
  margin-top: var(--space-4);
  border-radius: var(--radius);
  padding: var(--space-4);
  border: 1px solid rgba(191, 14, 17, 0.18);
  background: rgba(191, 14, 17, 0.05);
}

.panel h2 {
  margin: 0 0 var(--space-2);
  font-size: 1.2rem;
}

.prose p {
  margin: 0 0 var(--space-3);
}

.prose p:last-child {
  margin-bottom: 0;
}

/* =========================
   Buttons
   ========================= */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-weight: 750;
  text-decoration: none !important;
  transition: transform 140ms ease, background 140ms ease,
    border-color 140ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  background: var(--blue-bg);
  color: var(--white);
  border-color: rgba(54, 51, 151, 0.7);
}

.button.primary:hover {
  background: #3341a3;
}

.button.secondary {
  background: var(--white);
  color: var(--text);
}

.button.secondary:hover {
  background: rgba(54, 51, 151, 0.06);
}

/* Index hero : bouton "Nous contacter" en rouge */
.hero .hero-actions .button.secondary {
  background: var(--red-bg);
  color: var(--white);
  border-color: rgba(191, 14, 17, 0.75);
}

.hero .hero-actions .button.secondary:hover {
  background: #b62d30;
}

/* =========================
   Grilles / tuiles
   ========================= */
.grid {
  display: grid;
  gap: var(--space-4);
}

.grid-2 {
  grid-template-columns: 1fr;
}

.grid-4 {
  grid-template-columns: 1fr;
}

.tile {
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    180deg,
    rgba(191, 14, 17, 0.04),
    rgba(255, 255, 255, 1) 55%
  );
  border: 1px solid rgba(191, 14, 17, 0.14);
  border-radius: var(--radius);
  padding: var(--space-4);
  box-shadow: 0 1px 0 rgba(2, 6, 23, 0.02);
  transition: transform 160ms ease, box-shadow 160ms ease,
    border-color 160ms ease;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tile:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: rgba(54, 51, 151, 0.28);
}

/* Variantes "fond complet" (pas de bande en haut) */
.tile.tile--blue {
  background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.14),
      rgba(255, 255, 255, 0) 58%
    ),
    var(--blue-bg);
  border-color: rgba(54, 51, 151, 0.9);
  color: var(--white);
}

.tile.tile--red {
  background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.14),
      rgba(255, 255, 255, 0) 58%
    ),
    var(--red-bg);
  border-color: rgba(191, 14, 17, 0.9);
  color: var(--white);
}

.tile.tile--blue h1,
.tile.tile--blue h2,
.tile.tile--blue h3,
.tile.tile--red h1,
.tile.tile--red h2,
.tile.tile--red h3 {
  color: var(--white);
}

.tile.tile--blue .muted,
.tile.tile--red .muted,
.tile.tile--blue .list,
.tile.tile--red .list,
.tile.tile--blue p,
.tile.tile--red p {
  color: rgba(255, 255, 255, 0.84);
}

.tile.tile--blue a,
.tile.tile--red a {
  color: rgba(255, 255, 255, 0.95);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.tile.tile--blue a:hover,
.tile.tile--red a:hover {
  color: var(--white);
}

.tile.tile--blue .tile-link,
.tile.tile--red .tile-link {
  color: rgba(255, 255, 255, 0.95);
}

.tile.tile--blue:hover,
.tile.tile--red:hover {
  border-color: rgba(255, 255, 255, 0.45);
}

.tile h3 {
  margin: 6px 0 0;
  font-size: 1.12rem;
  line-height: 1.25;
}

.tile p {
  margin: 0;
  color: var(--muted);
}

.tile-link {
  margin-top: auto;
  padding-top: 6px;
  font-weight: 750;
  color: var(--blue);
  display: inline-block;
}

/* Carte cliquable sur toute la surface (index) */
.tile--link {
  color: inherit;
  text-decoration: none;
}

.tile--link:hover {
  text-decoration: none; /* évite le soulignement global des textes */
}

.tile--link:hover .tile-link {
  text-decoration: underline;
}

@media (min-width: 720px) {
  .hero-inner,
  .page-hero-inner {
    grid-template-columns: 1.15fr 0.85fr;
  }

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

  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* =========================
   Listes / Steps
   ========================= */
.list {
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-3);
}

.step {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
}

.step h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
}

.step p {
  margin: 0;
  color: var(--muted);
}

.steps-compact .step {
  padding: var(--space-3) var(--space-4);
}

/* =========================
   CTA
   ========================= */
.cta {
  border-radius: var(--radius);
  border: 1px solid rgba(54, 51, 151, 0.16);
  background: radial-gradient(
      700px 240px at 10% 10%,
      rgba(54, 51, 151, 0.14),
      transparent 60%
    ),
    radial-gradient(
      700px 240px at 90% 30%,
      rgba(191, 14, 17, 0.1),
      transparent 55%
    ),
    var(--white);
  padding: var(--space-5);
  display: grid;
  gap: var(--space-4);
  align-items: center;
}

@media (min-width: 900px) {
  .cta {
    grid-template-columns: 1fr auto;
  }
}

/* =========================
   Services
   ========================= */
.service {
  display: grid;
  gap: var(--space-3);
}

.service-head {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.service-head h2 {
  margin: 0;
}

/* =========================
   Références : grille logos
   ========================= */
.logo-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.logo-tile {
  width: 100%;
  aspect-ratio: 3 / 2;
  border-radius: var(--radius);
  padding: var(--space-3);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(
    180deg,
    rgba(54, 51, 151, 0.06),
    rgba(255, 255, 255, 1) 70%
  );
  border: 1px solid rgba(54, 51, 151, 0.14);
  box-shadow: 0 1px 0 rgba(2, 6, 23, 0.02);
}

.logo-img {
  width: 100%;
  height: 64px;
  object-fit: contain;
  display: block;
}

@media (min-width: 720px) {
  .logo-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* =========================
   Formulaire
   ========================= */
.form {
  display: grid;
  gap: 14px;
  margin-top: var(--space-3);
}

.form-row {
  display: grid;
  gap: 6px;
}

label {
  font-weight: 650;
  font-size: 0.95rem;
}

input,
textarea {
  width: 100%;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  font: inherit;
  background: var(--white);
}

input:focus,
textarea:focus {
  outline: none;
  border-color: rgba(54, 51, 151, 0.45);
  box-shadow: 0 0 0 4px rgba(54, 51, 151, 0.12);
}

input:invalid,
textarea:invalid {
  border-color: rgba(191, 14, 17, 0.35);
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

/* =========================
   Footer
   ========================= */
.site-footer {
  border-top: 1px solid var(--border);
  padding: var(--space-6) 0 var(--space-4);
  background: linear-gradient(
    180deg,
    rgba(54, 51, 151, 0.08),
    rgba(255, 255, 255, 1) 75%
  );
}

.footer-grid {
  display: grid;
  gap: var(--space-4);
}

.footer-title {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.footer-links {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.footer-links a {
  color: var(--muted);
}

.footer-links a:hover {
  color: var(--text);
}

.footer-bottom {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

@media (min-width: 900px) {
  .footer-grid {
    grid-template-columns: 1.2fr 0.8fr 1fr;
    align-items: start;
  }
}