/* ============================================
   VARIABLES CSS - Thème Light & Dark
   ============================================ */
:root {
  /* Couleurs primaires - alignées sur le bleu GoPaaS */
  --color-primary: #1E3A8A;      /* Bleu foncé principal */
  --color-secondary: #3B82F6;    /* Bleu clair pour les accents */
  --color-accent: #1D4ED8;       /* Bleu intermédiaire (remplace les verts/violets) */
  --color-danger: #EF4444;

  /* Couleurs neutres */
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8FAFC;
  --color-text: #0F172A;
  --color-text-secondary: #64748B;
  --color-border: #E2E8F0;

  /* Gradients 100% bleus */
  --gradient-primary: linear-gradient(135deg, #1E3A8A 0%, #3B82F6 100%);
  --gradient-card: linear-gradient(135deg, rgba(30,58,138,0.08) 0%, rgba(59,130,246,0.12) 100%);

  /* Espacements */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Ombres */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 25px rgba(0,0,0,0.15);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-med: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Border radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --radius-full: 9999px;
}

/* Dark Mode */
[data-theme="dark"] {
  --color-bg: #0F172A;
  --color-bg-alt: #1E293B;
  --color-text: #F1F5F9;
  --color-text-secondary: #94A3B8;
  --color-border: #334155;
  --gradient-card: linear-gradient(135deg, rgba(30,64,175,0.3) 0%, rgba(59,130,246,0.3) 100%);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition-med), color var(--transition-med);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar-main {
  background-color: var(--color-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
  transition: all var(--transition-med);
  z-index: 1030;
}

.navbar-main.scrolled {
  box-shadow: var(--shadow-md);
  padding: 0.75rem 0;
}

.brand-logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-link {
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  padding: 0.5rem 1rem !important;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 1rem;
  right: 1rem;
  height: 2px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  overflow: hidden;
  background: linear-gradient(135deg, #F8FAFC 0%, #FFFFFF 50%, #E0ECFF 100%);
}

[data-theme="dark"] .hero-section {
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #1E293B 100%);
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.1;
  z-index: 0;
}

.code-animation {
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  color: var(--color-primary);
  white-space: pre;
  padding: 2rem;
  line-height: 1.8;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-kicker {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  color: var(--color-text);
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
}

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

.hero-metrics {
  display: flex;
  gap: 3rem;
  margin-top: 3rem;
  flex-wrap: wrap;
}

.metric-item {
  text-align: left;
}

.metric-value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.metric-label {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-visual {
  position: relative;
  z-index: 1;
}

.hero-card-glass {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-xl);
}

[data-theme="dark"] .hero-card-glass {
  background: rgba(30, 41, 59, 0.8);
  border-color: rgba(255, 255, 255, 0.1);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.card-title {
  font-weight: 700;
  font-size: 1.25rem;
}

.card-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.feature-preview {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0;
  color: var(--color-text-secondary);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
}

.scroll-line {
  width: 2px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

/* ============================================
   SECTIONS
   ============================================ */
.section {
  padding: 5rem 0;
}

.section-header {
  margin-bottom: 3rem;
}

.section-kicker {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.section-lead {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

/* ============================================
   FEATURE CARDS
   ============================================ */
.feature-card-glass {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-lg);
  padding: 2rem;
  height: 100%;
  transition: all var(--transition-med);
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .feature-card-glass {
  background: rgba(30, 41, 59, 0.6);
  border-color: rgba(255, 255, 255, 0.1);
}

.feature-card-glass:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary);
}

.feature-card-glass .feature-icon {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  color: white;
}

.feature-card-glass h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.feature-card-glass p {
  color: var(--color-text-secondary);
  margin: 0;
}

.feature-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  height: 100%;
  transition: all var(--transition-med);
  box-shadow: var(--shadow-sm);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.feature-icon-wrapper {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-card);
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  color: var(--color-primary);
  transition: transform var(--transition-med);
}

.feature-card:hover .feature-icon-wrapper {
  transform: scale(1.1) rotate(5deg);
}

.feature-card h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.feature-card p {
  color: var(--color-text-secondary);
  margin: 0;
}

/* ============================================
   TIMELINE
   ============================================ */
.timeline {
  position: relative;
  padding: 2rem 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gradient-primary);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  display: flex;
  align-items: center;
  margin-bottom: 3rem;
}

.timeline-item:nth-child(odd) {
  flex-direction: row;
}

.timeline-item:nth-child(even) {
  flex-direction: row-reverse;
}

.timeline-number {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  color: white;
  border-radius: 50%;
  font-size: 1.5rem;
  font-weight: 700;
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

.timeline-content {
  flex: 1;
  padding: 0 2rem;
  max-width: 400px;
}

.timeline-content h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.timeline-content p {
  color: var(--color-text-secondary);
  margin: 0;
}

@media (max-width: 768px) {
  .timeline::before {
    left: 30px;
  }
  
  .timeline-item {
    flex-direction: row !important;
    padding-left: 60px;
  }
  
  .timeline-content {
    padding-left: 1rem;
    max-width: 100%;
  }
}

/* ============================================
   TESTIMONIALS
   ============================================ */
.section-testimonials {
  background: var(--color-bg-alt);
}

.testimonial-card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
  box-shadow: var(--shadow-md);
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.testimonial-logo {
  margin-bottom: 1.5rem;
  opacity: 0.8;
}

.testimonial-card h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.testimonial-text {
  color: var(--color-text-secondary);
  font-style: italic;
  flex: 1;
}

.carousel-control-prev,
.carousel-control-next {
  width: 50px;
  height: 50px;
  background: var(--color-primary);
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.8;
}

.carousel-control-prev {
  left: -25px;
}

.carousel-control-next {
  right: -25px;
}

.carousel-control-prev:hover,
.carousel-control-next:hover {
  opacity: 1;
}

/* ============================================
   SOLUTIONS
   ============================================ */
.solution-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
}

.solution-card h3 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.solution-card p {
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

.solution-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

.nav-tabs {
  border-bottom: 2px solid var(--color-border);
}

.nav-tabs .nav-link {
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--color-text-secondary);
  padding: 1rem 1.5rem;
  transition: all var(--transition-fast);
}

.nav-tabs .nav-link:hover {
  border-bottom-color: var(--color-primary);
  color: var(--color-primary);
}

.nav-tabs .nav-link.active {
  border-bottom-color: var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}

/* ============================================
   STATS
   ============================================ */
.section-stats {
  background: var(--gradient-primary);
  color: white;
}

.stat-card {
  text-align: center;
  padding: 2rem;
}

.stat-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.9;
}

.stat-value {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1.125rem;
  opacity: 0.9;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================
   FAQ
   ============================================ */
.section-faq {
  background: var(--color-bg-alt);
}

.accordion-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md) !important;
  margin-bottom: 1rem;
}

.accordion-button {
  background: var(--color-bg);
  color: var(--color-text);
  font-weight: 600;
  padding: 1.25rem 1.5rem;
  border: none;
  box-shadow: none;
}

.accordion-button:not(.collapsed) {
  background: var(--color-bg);
  color: var(--color-primary);
  box-shadow: none;
}

.accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232563EB'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

.accordion-body {
  padding: 1.5rem;
  color: var(--color-text-secondary);
}

/* ============================================
   CONTACT
   ============================================ */
.section-contact {
  background: var(--gradient-primary);
  color: white;
}

.contact-content h2 {
  color: white;
}

.contact-info {
  margin-top: 2rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  color: rgba(255, 255, 255, 0.9);
}

.contact-item i {
  width: 24px;
  text-align: center;
}

.contact-form-wrapper {
  background: white;
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-xl);
}

[data-theme="dark"] .contact-form-wrapper {
  background: var(--color-bg-alt);
}

.contact-form .form-label {
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.contact-form .form-control {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  transition: all var(--transition-fast);
}

.contact-form .form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.contact-form .form-check-label {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* ============================================
   FOOTER
   ============================================ */
.footer-main {
  background: var(--color-bg-alt);
  padding: 3rem 0 1.5rem;
  border-top: 1px solid var(--color-border);
}

.footer-main h5 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.footer-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  display: block;
  margin-bottom: 0.5rem;
}

.footer-link:hover {
  color: var(--color-primary);
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.social-link:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  transform: translateY(-3px);
}

/* ============================================
   SCROLL TO TOP BUTTON
   ============================================ */
.btn-scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border: none;
  border-radius: 50%;
  color: white;
  font-size: 1.25rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-med);
  z-index: 1000;
  box-shadow: var(--shadow-lg);
}

.btn-scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.btn-scroll-top:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

/* ============================================
   REVEAL ANIMATION
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1200px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .hero-metrics {
    gap: 2rem;
  }
  
  .metric-value {
    font-size: 2rem;
  }
  
  .section {
    padding: 3rem 0;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .hero-actions .btn {
    width: 100%;
  }
  
  .carousel-control-prev,
  .carousel-control-next {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}