/*
 * RASID-UAD — Feuille de style principale
 * Design moderne, professionnel avec palette bleu foncé / vert / data-tech
 * Mobile-first, responsive
 */

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

:root {
  /* Palette principale — bleu foncé / vert inspiration Sénégal + data */
  --color-primary: #0b3d91;
  --color-primary-dark: #072a64;
  --color-primary-light: #1565c0;
  --color-accent: #00897b;
  --color-accent-light: #4db6ac;
  --color-bg: #f5f7fa;
  --color-white: #ffffff;
  --color-surface: #ffffff;
  --color-text: #212121;
  --color-text-light: #555555;
  --color-text-muted: #888888;
  --color-border: #e0e0e0;
  --color-hero-bg: linear-gradient(135deg, #0b3d91 0%, #00897b 100%);
  --color-alt-bg: #eef2f7;
  --font-sans: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.12);
  --transition: 0.3s ease;
  --container-max: 1100px;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a:hover {
  color: var(--color-accent);
}

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

ul {
  list-style: none;
}

/* ===== Layout ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

main {
  flex: 1;
}

/* ===== EN-TÊTE / HEADER ===== */
.site-header {
  background: var(--color-white);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  gap: 1rem;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.logo:hover {
  color: var(--color-primary-dark);
}

.logo-icon {
  font-size: 1.4rem;
  color: var(--color-accent);
}

/* Navigation principale */
.main-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  padding: 0.5rem 0.75rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-light);
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}

.nav-link:hover {
  background: var(--color-alt-bg);
  color: var(--color-primary);
  text-decoration: none;
}

.nav-link.active {
  background: var(--color-primary);
  color: var(--color-white);
}

.nav-link.active:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
}

/* Burger menu */
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
}

.burger span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.burger.active span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.burger.active span:nth-child(2) {
  opacity: 0;
}

.burger.active span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* ===== HERO / BANNIÈRE D'ACCUEIL ===== */
.hero {
  background: var(--color-hero-bg);
  color: var(--color-white);
  padding: 5rem 0 4rem;
  text-align: center;
}

.hero-content {
  max-width: 750px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.hero-subtitle {
  font-size: 1.2rem;
  font-weight: 400;
  opacity: 0.9;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.hero-text {
  font-size: 1rem;
  opacity: 0.85;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== BANNIÈRE DE PAGE (pages internes) ===== */
.page-banner {
  background: var(--color-hero-bg);
  color: var(--color-white);
  padding: 3rem 0 2.5rem;
  text-align: center;
}

.page-banner h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.page-banner p {
  font-size: 1.1rem;
  opacity: 0.85;
}

/* ===== BOUTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

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

.btn-primary:hover {
  background: #00796b;
  border-color: #00796b;
  color: var(--color-white);
  text-decoration: none;
}

.btn-secondary {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.6);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--color-white);
  color: var(--color-white);
  text-decoration: none;
}

/* ===== SECTIONS ===== */
.section {
  padding: 4rem 0;
}

.alt-bg {
  background: var(--color-alt-bg);
}

.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 0.75rem;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
}

/* ===== CONTENU TEXTE ===== */
.content-block {
  max-width: 800px;
  color: var(--color-text-light);
  line-height: 1.8;
}

.content-block p {
  margin-bottom: 1rem;
}

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

/* ===== GRILLE DE CARTES ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-icon {
  font-size: 2rem;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.card p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===== CARTES DE MISSIONS ===== */
.missions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.mission-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
  transition: box-shadow var(--transition), transform var(--transition);
}

.mission-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.mission-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-accent-light);
  opacity: 0.4;
  margin-bottom: 0.5rem;
}

.mission-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.mission-card p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===== ÉVÉNEMENTS ===== */
.events-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.event-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  transition: box-shadow var(--transition);
}

.event-card:hover {
  box-shadow: var(--shadow);
}

.event-date {
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  text-align: center;
  flex-shrink: 0;
  min-width: 100px;
  font-size: 0.85rem;
  font-weight: 600;
}

.event-info h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.event-info p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

.event-location {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.event-location i {
  margin-right: 0.25rem;
}

/* ===== CTA (Appel à l'action) ===== */
.cta-section {
  background: var(--color-hero-bg);
  color: var(--color-white);
  text-align: center;
  padding: 4rem 0;
}

.cta-content h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.cta-content p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Encart CTA (box) */
.cta-box {
  background: var(--color-surface);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}

.cta-box-icon {
  font-size: 2.5rem;
  color: var(--color-accent);
  flex-shrink: 0;
}

.cta-box-content h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.cta-box-content p {
  color: var(--color-text-light);
  margin-bottom: 1.25rem;
  line-height: 1.7;
}

/* ===== COLONNES ===== */
.two-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.col p {
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===== CONTACT ===== */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 1rem;
  color: var(--color-text-light);
}

.contact-item i {
  font-size: 1.2rem;
  color: var(--color-accent);
  width: 24px;
  text-align: center;
}

.contact-item a {
  color: var(--color-text-light);
}

.contact-item a:hover {
  color: var(--color-primary);
}

/* ===== FORMULAIRES ===== */
.form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  max-width: 600px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(11, 61, 145, 0.1);
}

.form-group textarea {
  resize: vertical;
}

/* ===== HIGHLIGHTS (page d'accueil) ===== */
.highlights {
  padding: 4rem 0;
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.8);
  margin-top: auto;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
  padding: 3rem 1.5rem 2rem;
}

.footer-brand .logo-icon,
.footer-brand .logo-text {
  color: var(--color-white);
}

.footer-brand .logo-text {
  font-size: 1.3rem;
  font-weight: 700;
}

.footer-tagline {
  font-size: 0.85rem;
  margin-top: 0.5rem;
  opacity: 0.7;
}

.footer-links h4,
.footer-social h4 {
  color: var(--color-white);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.footer-links ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem 1.5rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--color-white);
  text-decoration: none;
}

.social-icons {
  display: flex;
  gap: 0.75rem;
}

.social-icons a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
  font-size: 1rem;
  transition: background var(--transition);
}

.social-icons a:hover {
  background: var(--color-accent);
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1.25rem 0;
  text-align: center;
  font-size: 0.8rem;
  opacity: 0.7;
}

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

/* Tablette */
@media (max-width: 900px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

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

  .cta-box {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }
}

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

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 1rem;
    box-shadow: var(--shadow-lg);
    border-top: 1px solid var(--color-border);
  }

  .main-nav.open {
    display: flex;
  }

  .nav-link {
    padding: 0.75rem 1rem;
    width: 100%;
    border-radius: var(--radius);
  }

  .hero {
    padding: 3rem 0 2.5rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

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

  .page-banner {
    padding: 2rem 0 1.5rem;
  }

  .page-banner h1 {
    font-size: 1.75rem;
  }

  .section {
    padding: 2.5rem 0;
  }

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

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

  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .social-icons {
    justify-content: center;
  }

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

  .form-group.full-width {
    grid-column: 1;
  }

  .event-card {
    flex-direction: column;
  }

  .event-date {
    min-width: auto;
    width: fit-content;
  }

  .section-title::after {
    left: 50%;
    transform: translateX(-50%);
  }

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