/* ============================================================
   style.css — Styles personnalisés SOBECI
   Complément à Tailwind CSS — variables, base, composants, animations
   ============================================================ */

/* === VARIABLES CSS (Charte graphique SOBECI) === */
:root {
  --color-primary: #1B3D8F;
  --color-secondary: #F5A623;
  --color-dark: #0F2356;
  --color-light: #D6E4FF;
  --color-white: #FFFFFF;
  --color-gray: #F4F6F9;
  --color-text: #1A1A1A;
  --font-title: 'Poppins', sans-serif;
  --font-body: 'Roboto', sans-serif;
  --transition: all 0.3s ease;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);
  --radius: 12px;
  --radius-sm: 8px;
}

/* === RESET & BASE === */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
  list-style: none;
}

/* === CONTENEUR === */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* === SECTIONS === */
section {
  padding: 100px 0;
}

/* === TYPOGRAPHIE SECTIONS === */
.section-label {
  display: inline-block;
  font-family: var(--font-title);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--color-secondary);
  margin-bottom: 12px;
  position: relative;
  padding-left: 40px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 3px;
  background: var(--color-secondary);
  border-radius: 2px;
}

.section-title {
  font-family: var(--font-title);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 20px;
}

.section-title.text-center {
  text-align: center;
}

.section-title.text-white {
  color: var(--color-white);
}

.section-subtitle {
  font-family: var(--font-body);
  font-size: 1.1rem;
  color: #555;
  max-width: 650px;
  line-height: 1.8;
}

.section-subtitle.text-center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

/* === BOUTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-title);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  text-align: center;
}

.btn-primary {
  background: var(--color-secondary);
  color: var(--color-white);
  border-color: var(--color-secondary);
}

.btn-primary:hover {
  background: #e6951a;
  border-color: #e6951a;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(245, 166, 35, 0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(27, 61, 143, 0.3);
}

.btn-white {
  background: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.btn-white:hover {
  background: var(--color-white);
  color: var(--color-primary);
  transform: translateY(-2px);
}

/* === HEADER / NAVIGATION === */
#header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--color-white);
  padding: 12px 0;
  transition: background 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}

#header.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.10);
  padding: 8px 0;
}

/* Brand (logo + texte) */
.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.header-logo {
  width: 70px;
  height: auto;
}

.header-brand-text {
  display: flex;
  flex-direction: column;
}

.header-brand-name {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 20px;
  color: var(--color-primary);
  line-height: 1.2;
}

.header-brand-sigle {
  font-family: var(--font-title);
  font-weight: 400;
  font-size: 9px;
  color: var(--color-primary);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  max-width: 220px;
  line-height: 1.3;
}

/* Nav links */
#header .nav-link {
  color: var(--color-primary);
  font-family: var(--font-title);
  font-size: 15px;
  font-weight: 500;
  transition: color 0.3s ease;
  white-space: nowrap;
}

#header .nav-link:hover {
  color: var(--color-secondary);
}

#header .nav-link.active {
  color: var(--color-secondary);
  font-weight: 600;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 1001;
  padding: 8px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 3px;
  transition: var(--transition);
}

.hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
  background: var(--color-white);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
  background: var(--color-white);
}

/* Nav menu desktop */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

/* === HERO === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  overflow: hidden;
  padding: 0;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    rgba(27, 61, 143, 0.88) 0%,
    rgba(27, 61, 143, 0.65) 45%,
    rgba(245, 166, 35, 0.40) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 10;
  text-align: left;
  max-width: 680px;
  padding-left: 8%;
  opacity: 1;
  visibility: visible;
}

/* Label orange au-dessus du H1 */
.hero-label {
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 13px;
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

/* H1 */
.hero h1 {
  font-family: var(--font-title);
  font-size: clamp(36px, 5.5vw, 68px);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.1;
  margin-bottom: 24px;
}

.hero-h1-accent {
  color: var(--color-secondary);
  font-weight: 800;
  font-style: italic;
}

/* Description SOBECI */
.hero-description {
  font-family: var(--font-body);
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 560px;
  margin: 0 0 40px 0;
  line-height: 1.75;
}

/* Boutons Hero */
.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 15px;
  background: var(--color-primary);
  color: var(--color-white);
  border: 2px solid var(--color-primary);
  padding: 14px 34px;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-hero-primary:hover {
  background: var(--color-dark);
  border-color: var(--color-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(27, 61, 143, 0.4);
}

.btn-hero-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 15px;
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.8);
  padding: 14px 34px;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-hero-outline:hover {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
  transform: translateY(-2px);
}

.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  color: var(--color-white);
  font-size: 24px;
  animation: scrollBounce 1.5s ease-in-out infinite;
  opacity: 0.7;
  transition: opacity 0.3s ease;
}

.scroll-indicator:hover {
  opacity: 1;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

/* === BOUTON RETOUR EN HAUT === */
#back-to-top {
  position: fixed;
  bottom: 90px;
  right: 24px;
  z-index: 50;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  border: none;
  box-shadow: var(--shadow);
  transition: var(--transition);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#back-to-top:hover {
  background: var(--color-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* === BOUTON WHATSAPP === */
#whatsapp-btn {
  background: #25D366 !important;
  opacity: 0;
  visibility: hidden;
  transform: scale(0.5);
  transition: var(--transition);
}

#whatsapp-btn:hover {
  background: #1da851 !important;
}

#whatsapp-btn.visible {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

/* === SCROLLBAR PERSONNALISÉE === */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-gray);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-dark);
}

/* Firefox */
html {
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary) var(--color-gray);
}

/* === SELECTION TEXT === */
::selection {
  background: var(--color-primary);
  color: var(--color-white);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

/* Tablette (768px - 1024px) */
@media (max-width: 1024px) {
  .section-title {
    font-size: 2rem;
  }

  section {
    padding: 70px 0;
  }
}

/* Mobile (< 768px) */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: var(--color-primary);
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    padding: 40px 24px;
    transition: right 0.4s cubic-bezier(0.77, 0, 0.175, 1);
    box-shadow: -5px 0 30px rgba(0, 0, 0, 0.3);
  }

  .nav-menu.open {
    right: 0;
  }

  .nav-menu .nav-link {
    color: var(--color-white) !important;
    font-size: 1.05rem;
    padding: 16px;
    width: 100%;
    border-radius: 8px;
  }

  .nav-menu .nav-link:hover,
  .nav-menu .nav-link.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-secondary) !important;
  }

  /* Header mobile */
  .header-logo {
    width: 55px !important;
  }

  .header-brand-sigle {
    font-size: 7px;
    max-width: 160px;
  }

  .header-brand-name {
    font-size: 16px;
  }

  /* Hero mobile */
  .hero {
    align-items: flex-start;
    padding-top: 120px;
  }

  .hero-content {
    padding-left: 5%;
    padding-right: 5%;
    text-align: center;
    max-width: 100%;
  }

  .hero-label {
    font-size: 11px;
  }

  .hero-description {
    font-size: 15px;
    max-width: 100%;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
    width: 100%;
  }

  .hero-buttons .btn-hero-primary,
  .hero-buttons .btn-hero-outline {
    width: 100%;
    max-width: 280px;
    text-align: center;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .section-subtitle {
    font-size: 1rem;
  }

  section {
    padding: 60px 0;
  }

  .container {
    padding: 0 16px;
  }
}

/* Petit mobile (< 480px) */
@media (max-width: 480px) {
  .header-logo {
    width: 45px !important;
  }

  .header-brand-name {
    font-size: 14px;
  }

  .header-brand-sigle {
    font-size: 6px;
    max-width: 140px;
  }

  .hero {
    padding-top: 100px;
  }

  .hero-label {
    font-size: 10px;
    letter-spacing: 1px;
  }

  .hero-buttons .btn-hero-primary,
  .hero-buttons .btn-hero-outline {
    padding: 12px 24px;
    font-size: 14px;
  }

  .section-title {
    font-size: 1.5rem;
  }
}

/* Mobile nav overlay backdrop */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 998;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.nav-overlay.open {
  display: block;
  opacity: 1;
}

/* ============================================================
   SECTION — À PROPOS
   ============================================================ */

#apropos .section-label {
  display: inline-flex;
  align-items: center;
}

/* ============================================================
   SECTION — NOS MÉTIERS
   ============================================================ */

.metier-card {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.metier-card:hover {
  box-shadow: 0 12px 35px rgba(27, 61, 143, 0.2);
}

.metier-card h3 {
  color: var(--color-primary);
  transition: color 0.3s ease;
}

.metier-card:hover h3 {
  color: var(--color-white);
}

/* Section label centré */
.section-label.justify-center {
  padding-left: 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-label.justify-center::before {
  position: static;
  transform: none;
  flex-shrink: 0;
}

/* ============================================================
   SECTION — PROJETS
   ============================================================ */

/* Filtres */
.filter-btn {
  font-family: var(--font-title);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 8px 20px;
  border-radius: 50px;
  border: 2px solid #e2e8f0;
  background: var(--color-white);
  color: #64748b;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

.filter-btn.active {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
  color: var(--color-white);
}

/* Cartes projets */
.project-card {
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.project-card-inner:hover .project-overlay {
  opacity: 1;
}

/* ============================================================
   SECTION — PARTENAIRES (bandeau défilant infini)
   ============================================================ */
.partners-slider {
  overflow: hidden;
  padding: 20px 0;
  mask-image: linear-gradient(to right, transparent, black 5%, black 95%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 5%, black 95%, transparent);
}

.partners-track {
  display: flex;
  gap: 60px;
  align-items: center;
  width: max-content;
  animation: scroll-partners 35s linear infinite;
}

.partners-slider:hover .partners-track {
  animation-play-state: paused;
}

.partner-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 120px;
}

.partner-logo img {
  height: 55px;
  width: auto;
  object-fit: contain;
  filter: none;
  opacity: 1;
  transition: all 0.3s ease;
}

.partner-logo:hover img {
  transform: scale(1.1);
  filter: brightness(1.1);
}

@keyframes scroll-partners {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ============================================================
   SECTION — CONTACT (formulaire)
   ============================================================ */
.form-label {
  display: block;
  font-family: var(--font-title);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 12px 16px;
  border: 2px solid #e2e8f0;
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--color-text);
  transition: var(--transition);
  outline: none;
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(27, 61, 143, 0.1);
}

.form-input.error {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-error {
  display: block;
  font-size: 0.78rem;
  color: #ef4444;
  margin-top: 4px;
  min-height: 0;
  max-height: 0;
  overflow: hidden;
  transition: all 0.2s ease;
}

.form-error.visible {
  min-height: 18px;
  max-height: 40px;
}

.form-group {
  position: relative;
}

/* ============================================================
   FOOTER
   ============================================================ */
#footer {
  padding: 0;
}

#footer h4::after {
  content: '';
}

/* ============================================================
   PAGES LÉGALES (mentions-legales, politique-confidentialite)
   ============================================================ */
.legal-page {
  padding-top: 120px;
  padding-bottom: 80px;
  min-height: 100vh;
}

.legal-page h1 {
  font-family: var(--font-title);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.legal-page .legal-date {
  font-size: 0.85rem;
  color: #888;
  margin-bottom: 40px;
}

.legal-page h2 {
  font-family: var(--font-title);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: 36px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-secondary);
  display: inline-block;
}

.legal-page p,
.legal-page li {
  font-size: 0.95rem;
  color: #444;
  line-height: 1.8;
  margin-bottom: 12px;
}

.legal-page ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 16px;
}

.legal-page a {
  color: var(--color-primary);
  text-decoration: underline;
}

.legal-page a:hover {
  color: var(--color-secondary);
}

/* Select custom arrow */
select.form-input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}