/* =========================================================
   LE PLEIN FORMATION - Design Moderne 2025
   Style go.leplein.fr - Mode Clair Premium
   ========================================================= */

/* ===== VARIABLES ===== */
:root {
  --yellow: #f5ff00;
  --yellow-soft: #f8ff4d;
  --yellow-bg: rgba(245, 255, 0, 0.08);
  --green: #00282d;
  --green-light: #003d45;
  --white: #ffffff;
  --gray-50: #fafafa;
  --gray-100: #f5f5f5;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow: 0 4px 16px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.1);
  --shadow-yellow: 0 8px 32px rgba(245, 255, 0, 0.25);
  --transition-fast: 0.15s ease;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; color: var(--green); letter-spacing: -0.02em; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
p { color: var(--gray-600); }
a { color: inherit; text-decoration: none; transition: color var(--transition-fast); }

/* ===== LAYOUT ===== */
.container { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 6rem 0; }
.section-white { background: var(--white); }
.section-gray { background: var(--gray-50); }

/* ===== HEADER MODERNE ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--gray-200);
  transition: all var(--transition);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.logo img { 
  height: 36px; 
  width: auto; 
  transition: transform var(--transition);
}

.logo:hover img {
  transform: scale(1.05);
}

/* ===== NAVIGATION ===== */
.nav { display: flex; align-items: center; gap: 0.5rem; }

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gray-600);
  border-radius: var(--radius);
  transition: all var(--transition);
  border: 2px solid transparent;
}

.nav-link:hover { 
  color: var(--green); 
  background: var(--gray-100);
}

.nav-link-primary {
  background: var(--yellow);
  color: var(--green);
  font-weight: 700;
  box-shadow: var(--shadow-yellow);
}

.nav-link-primary:hover {
  background: var(--yellow-soft);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(245, 255, 0, 0.35);
}

/* ===== HERO SECTION MODERNE ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, var(--white) 0%, var(--gray-50) 100%);
  overflow: hidden;
  padding-top: 80px;
}

.hero-bg-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 80%, rgba(245, 255, 0, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(0, 40, 45, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  padding: 2rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  background: var(--yellow);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--green);
  margin-bottom: 2rem;
  box-shadow: var(--shadow-yellow);
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--green) 0%, var(--green-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  color: var(--gray-600);
  max-width: 700px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

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

/* ===== BUTTONS MODERNES ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--yellow);
  color: var(--green);
  border-color: var(--yellow);
  box-shadow: var(--shadow-yellow);
}

.btn-primary:hover {
  background: var(--yellow-soft);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(245, 255, 0, 0.4);
}

.btn-primary:active {
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--green);
  color: var(--white);
  border-color: var(--green);
  box-shadow: var(--shadow);
}

.btn-secondary:hover {
  background: var(--green-light);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--gray-300);
  color: var(--gray-700);
}

.btn-outline:hover {
  border-color: var(--yellow);
  background: var(--yellow-bg);
  color: var(--green);
}

.btn-lg {
  padding: 1.25rem 2.5rem;
  font-size: 1.125rem;
  border-radius: var(--radius-lg);
}

.btn-xl {
  padding: 1.5rem 3rem;
  font-size: 1.25rem;
  border-radius: var(--radius-lg);
}

/* ===== CARDS MODERNES ===== */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border: 1px solid var(--gray-200);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--yellow);
}

.card-premium {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.card-premium::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--yellow), var(--green));
  transform: scaleX(0);
  transition: transform var(--transition);
}

.card-premium:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--yellow);
}

.card-premium:hover::before {
  transform: scaleX(1);
}

/* ===== PARTNERS ===== */
.partners {
  padding: 3rem 0;
  background: var(--gray-50);
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}

.partners-title {
  text-align: center;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 2rem;
}

.partners-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4rem;
  flex-wrap: wrap;
}

.partners img { 
  height: 32px; 
  width: auto; 
  filter: grayscale(100%);
  opacity: 0.6;
  transition: all var(--transition); 
}

.partners img:hover { 
  filter: grayscale(0); 
  opacity: 1; 
}

/* ===== MODULES / FORMATION ===== */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.module-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.5rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  cursor: pointer;
}

.module-card:hover {
  border-color: var(--yellow);
  box-shadow: var(--shadow-md);
  transform: translateX(8px);
}

.module-num {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--green);
  color: var(--white);
  font-weight: 800;
  font-size: 1.125rem;
  border-radius: 14px;
  flex-shrink: 0;
  transition: all var(--transition);
}

.module-card:hover .module-num {
  background: var(--yellow);
  color: var(--green);
  transform: scale(1.1);
}

.module-content { flex: 1; }
.module-title { font-weight: 700; color: var(--green); margin-bottom: 0.375rem; font-size: 1.0625rem; }
.module-desc { font-size: 0.9rem; color: var(--gray-500); }
.module-arrow { color: var(--gray-400); transition: all var(--transition); }
.module-card:hover .module-arrow { transform: translateX(6px); color: var(--green); }

/* ===== FEATURES GRID ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature-card {
  text-align: center;
  padding: 2.5rem 2rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}

.feature-card:hover {
  border-color: var(--yellow);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.feature-icon {
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--yellow-bg);
  border-radius: 20px;
  color: var(--green);
  font-size: 1.75rem;
  margin: 0 auto 1.5rem;
  transition: all var(--transition);
}

.feature-card:hover .feature-icon {
  background: var(--yellow);
  transform: scale(1.1) rotate(5deg);
  box-shadow: var(--shadow-yellow);
}

.feature-title { font-weight: 700; color: var(--green); margin-bottom: 0.75rem; font-size: 1.125rem; }
.feature-desc { font-size: 0.9375rem; color: var(--gray-500); line-height: 1.6; }

/* ===== CONTACT SECTION ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.contact-card {
  text-align: center;
  padding: 2.5rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}

.contact-card:hover {
  border-color: var(--yellow);
  box-shadow: var(--shadow-md);
}

.contact-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--green);
  color: var(--white);
  border-radius: 18px;
  font-size: 1.5rem;
  margin: 0 auto 1.25rem;
  transition: all var(--transition);
}

.contact-card:hover .contact-icon {
  background: var(--yellow);
  color: var(--green);
  transform: scale(1.1);
}

.contact-title { font-weight: 700; color: var(--green); margin-bottom: 0.5rem; }
.contact-value { font-size: 1.375rem; font-weight: 800; color: var(--green); }
.contact-sub { font-size: 0.875rem; color: var(--gray-500); margin-top: 0.5rem; }

/* ===== FOOTER MODERNE ===== */
.footer {
  background: var(--green);
  color: var(--white);
  padding: 4rem 0 2rem;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--yellow);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--yellow);
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links { display: flex; flex-direction: column; gap: 0.75rem; }
.footer-links a { 
  color: rgba(255,255,255,0.8); 
  font-size: 0.9375rem; 
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.footer-links a:hover { color: var(--yellow); transform: translateX(4px); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy { font-size: 0.875rem; color: rgba(255,255,255,0.6); }

/* ===== SECTION HEADERS ===== */
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 { margin-bottom: 1rem; }
.section-header p { max-width: 600px; margin: 0 auto; font-size: 1.125rem; }

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--yellow-bg);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--green);
  margin-bottom: 1rem;
}

/* ===== HIGHLIGHT ===== */
.highlight {
  background: linear-gradient(transparent 60%, rgba(245, 255, 0, 0.4) 60%);
  padding: 0 0.25rem;
}

.highlight-title {
  display: inline;
  padding-bottom: 0.08em;
  background-image: linear-gradient(transparent calc(100% - 0.3em), rgba(245,255,0,0.5) 0.3em);
  background-size: 100% 100%;
  background-repeat: no-repeat;
  box-decoration-break: clone;
}

/* ===== UTILITIES ===== */
.text-center { text-align: center; }
.text-white { color: var(--white); }
.text-green { color: var(--green); }
.text-yellow { color: var(--yellow); }
.bg-white { background: var(--white); }
.bg-gray { background: var(--gray-50); }
.bg-green { background: var(--green); }
.bg-yellow { background: var(--yellow); }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.hidden { display: none; }

/* ===== SCROLL TO TOP ===== */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 52px;
  height: 52px;
  background: var(--yellow);
  color: var(--green);
  border: 2px solid var(--green);
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 99;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: var(--shadow-yellow);
}

.scroll-top.visible { opacity: 1; visibility: visible; }
.scroll-top:hover { 
  transform: translateY(-4px) scale(1.1); 
  box-shadow: 0 12px 40px rgba(245, 255, 0, 0.4);
}

/* ===== MOBILE MENU ===== */
.mobile-menu {
  display: none;
  position: fixed;
  top: 80px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--white);
  padding: 1.5rem;
  z-index: 99;
  overflow-y: auto;
  animation: slideDown 0.3s ease-out;
}

.mobile-menu.active { display: block; }

.mobile-menu a {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
  color: var(--gray-700);
  transition: all var(--transition-fast);
}

.mobile-menu a:hover { background: var(--gray-100); color: var(--green); }

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--green);
  cursor: pointer;
  padding: 0.5rem;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

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

.animate-fadeIn { animation: fadeIn 0.6s ease-out; }
.animate-slideUp { animation: slideUp 0.8s ease-out; }
.animate-pulse { animation: pulse 2s infinite; }
.animate-float { animation: float 3s ease-in-out infinite; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .header-inner { height: 72px; }
  .hero { padding-top: 72px; }
  .nav { display: none; }
  .mobile-menu-btn { display: block; }
  .section { padding: 4rem 0; }
}

@media (max-width: 768px) {
  .header-inner { height: 64px; }
  .hero { padding-top: 64px; min-height: auto; padding-bottom: 3rem; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  .section { padding: 3rem 0; }
  .partners-inner { gap: 2rem; }
  .partners img { height: 24px; }
  .card-premium { padding: 1.5rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .btn { padding: 0.875rem 1.5rem; font-size: 0.9375rem; }
  .btn-lg { padding: 1rem 2rem; }
}

@media (max-width: 480px) {
  .container { padding: 0 1rem; }
  .hero h1 { font-size: 1.75rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
}

/* ===== PRINT ===== */
@media print {
  .header, .footer, .scroll-top, .mobile-menu { display: none; }
  .section { padding: 1rem 0; }
  * { box-shadow: none !important; }
}