/* ============================================================
  F.I.C.S. INGÉNIERIE — Feuille de style principale
  Auteur : F.I.C.S. Ingénierie
  Structure :
    1. Variables CSS (palette, typographie)
    2. Reset & Base
    3. Animations & Transitions
    4. Navigation
    5. Hero Section
    6. Bandeau Trust
    7. Sections génériques
    8. Section Méthode
    9. Section Solutions (Catalogue)
    10. Statistiques
    11. Section Contact & Formulaire
    12. Footer
    13. Barre de diagnostic
    14. Responsive (≤1024px, ≤640px)
    15. Scrollbar & Curseur
============================================================ */

/* ── 1. VARIABLES ── */
:root {
  --carbon:      #0D0D0D;
  --anthracite:  #141414;
  --steel:       #1A1A1A;
  --metal:       #242424;
  --border:      #2A2A2A;
  --orange:      #FF6B00;
  --orange-dim:  #CC5500;
  --orange-glow: rgba(255, 107, 0, 0.12);
  --white:       #F0EDE8;
  --gray:        #8A8A8A;
  --green:       #00FF88;
  --font-title:  'Syncopate', sans-serif;
  --font-body:   'Inter', sans-serif;
  --font-mono:   'JetBrains Mono', monospace;
}

/* ── 2. RESET & BASE ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html { scroll-behavior: smooth; }

body {
  background: var(--carbon);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* Grille de fond isométrique */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 107, 0, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 107, 0, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ── 3. ANIMATIONS & TRANSITIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(32px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes scanline {
  0%   { transform: translateY(-100%); }
  100% { transform: translateY(100vh); }
}

@keyframes pulse-orange {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 107, 0, 0.4); }
  50%       { box-shadow: 0 0 0 8px rgba(255, 107, 0, 0); }
}

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

/* Classes de révélation au scroll */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition:
    opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ── 4. NAVIGATION ── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  height: 72px;
  background: rgba(13, 13, 13, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  animation: fadeIn 0.8s ease both;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.nav-logo img {
  height: 85px;
  width: auto;
  filter: drop-shadow(0 0 8px rgba(255, 107, 0, 0.3));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gray);
  text-decoration: none;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--orange); }

.nav-cta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--orange) !important;
  border: 1px solid var(--orange);
  padding: 8px 20px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  text-decoration: none;
  transition: background 0.2s, color 0.2s !important;
}

.nav-cta:hover {
  background: var(--orange) !important;
  color: var(--carbon) !important;
}

/* ── 5. HERO SECTION ── */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 48px 80px;
  overflow: hidden;
}

.hero-scanline {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--orange), transparent);
  animation: scanline 4s linear infinite;
  opacity: 0.4;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 860px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--orange);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border: 1px solid rgba(255, 107, 0, 0.3);
  padding: 6px 14px;
  margin-bottom: 40px;
  animation: fadeUp 0.8s 0.2s both;
}

.hero-badge::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse-orange 2s ease infinite;
}

.hero-title {
  font-family: var(--font-title);
  font-size: clamp(36px, 6vw, 72px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 8px;
  animation: fadeUp 0.8s 0.3s both;
}

.hero-title span {
  color: var(--orange);
  -webkit-text-stroke: 1px var(--orange);
}

.hero-subtitle {
  font-size: clamp(14px, 1.8vw, 17px);
  color: var(--gray);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 52px;
  animation: fadeUp 0.8s 0.45s both;
}

.hero-subtitle strong {
  color: var(--white);
  font-weight: 500;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeUp 0.8s 0.6s both;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--orange);
  color: var(--carbon);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 16px 32px;
  text-decoration: none;
  transition: background 0.2s, transform 0.15s;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
}

.btn-primary:hover {
  background: var(--orange-dim);
  transform: translateY(-1px);
}

.btn-primary svg { width: 14px; height: 14px; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 16px 32px;
  text-decoration: none;
  border: 1px solid var(--border);
  transition: border-color 0.2s, color 0.2s;
}

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

.hero-bg-text {
  position: absolute;
  right: -10px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-title);
  font-size: clamp(100px, 18vw, 220px);
  font-weight: 700;
  color: rgba(255, 107, 0, 0.03);
  letter-spacing: -0.05em;
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
  animation: fadeIn 1.5s 0.5s both;
}

/* ── 6. BANDEAU TRUST ── */
#trust {
  position: relative;
  z-index: 1;
  background: var(--steel);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 0;
  overflow: hidden;
}

.trust-inner {
  display: flex;
  align-items: stretch;
}

.trust-item {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 28px 40px;
  border-right: 1px solid var(--border);
  transition: background 0.2s;
}

.trust-item:last-child { border-right: none; }
.trust-item:hover { background: rgba(255, 107, 0, 0.04); }

.trust-icon {
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 107, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--orange);
}

.trust-icon svg { width: 18px; height: 18px; }

.trust-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gray);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 2px;
}

.trust-value {
  font-family: var(--font-title);
  font-size: 13px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
}

/* ── 7. SECTIONS GÉNÉRIQUES ── */
section {
  position: relative;
  z-index: 1;
  padding: 120px 48px;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--orange);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-label::after {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background: var(--orange);
  opacity: 0.5;
}

.section-title {
  font-family: var(--font-title);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 20px;
}

.section-desc {
  font-size: 16px;
  color: var(--gray);
  max-width: 520px;
  line-height: 1.75;
}

/* ── 8. SECTION MÉTHODE ── */
#methode {
  background: var(--anthracite);
  border-top: 1px solid var(--border);
}

.methode-header { margin-bottom: 60px; }

.methode-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-top: 80px;
  border: 1px solid var(--border);
}

.methode-step {
  padding: 48px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  transition: background 0.3s;
}

.methode-step:nth-child(even)       { border-right: none; }
.methode-step:nth-last-child(-n+2)  { border-bottom: none; }
.methode-step:hover                 { background: rgba(255, 107, 0, 0.03); }

/* Barre orange animée au hover */
.methode-step::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px;
  height: 0;
  background: var(--orange);
  transition: height 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.methode-step:hover::before { height: 100%; }

.step-number {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--orange);
  letter-spacing: 0.2em;
  margin-bottom: 24px;
}

.step-icon {
  width: 48px;
  height: 48px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  margin-bottom: 24px;
}

.step-icon svg { width: 22px; height: 22px; }

.step-title {
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 14px;
  letter-spacing: 0.03em;
}

.step-desc {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.7;
}

.step-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.step-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--gray);
  border: 1px solid var(--border);
  padding: 4px 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ── 9. SECTION SOLUTIONS ── */
#solutions { border-top: 1px solid var(--border); }

.solutions-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 64px;
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.solution-card {
  background: var(--carbon);
  padding: 48px;
  position: relative;
  overflow: hidden;
  transition: background 0.3s;
  display: flex;
  flex-direction: column;
}

.solution-card:hover { background: var(--steel); }

.solution-card.featured {
  background: var(--steel);
  border-top: 3px solid var(--orange);
}

.solution-card.featured .card-badge { display: inline-block; }

.card-badge {
  display: none;
  font-family: var(--font-mono);
  font-size: 9px;
  background: var(--orange);
  color: var(--carbon);
  padding: 3px 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 20px;
  font-weight: 500;
  width: fit-content;
}

.card-level {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--orange);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.card-title {
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
  line-height: 1.2;
}

.card-desc {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.7;
  margin-bottom: 32px;
  flex: 1;
}

.card-features {
  list-style: none;
  margin-bottom: 36px;
}

.card-features li {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gray);
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-features li::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  background: var(--orange);
  flex-shrink: 0;
}

.card-cta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--orange);
  text-decoration: none;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: gap 0.2s;
}

.card-cta:hover { gap: 14px; }
.card-cta svg { width: 12px; height: 12px; }

/* ── 10. STATISTIQUES ── */
#stats {
  background: var(--steel);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 80px 48px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--border);
}

.stat-item {
  padding: 48px 40px;
  border-right: 1px solid var(--border);
  text-align: center;
  transition: background 0.2s;
}

.stat-item:last-child { border-right: none; }
.stat-item:hover { background: rgba(255, 107, 0, 0.04); }

.stat-number {
  font-family: var(--font-title);
  font-size: clamp(36px, 4vw, 54px);
  font-weight: 700;
  color: var(--orange);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 10px;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gray);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* ── 11. CONTACT & FORMULAIRE ── */
#contact {
  background: var(--anthracite);
  border-top: 1px solid var(--border);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
  margin-top: 60px;
}

.contact-info-block { margin-top: 40px; }

.contact-info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 32px;
}

.contact-info-icon {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-info-icon svg { width: 16px; height: 16px; }

.contact-info-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--gray);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.contact-info-value {
  font-size: 14px;
  color: var(--white);
}

/* Formulaire style "tablette industrielle" */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--border);
}

.form-field {
  position: relative;
  border-right: 1px solid var(--border);
  transition: background 0.2s;
}

.form-field:last-child       { border-right: none; }
.form-field.full             { grid-column: 1 / -1; border-right: none; }
.form-field:focus-within     { background: rgba(255, 107, 0, 0.03); }

.form-field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--orange);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 16px 24px 0;
}

.form-field input,
.form-field select,
.form-field textarea {
  display: block;
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 14px;
  padding: 8px 24px 16px;
  resize: none;
  appearance: none;
}

.form-field select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238A8A8A' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 24px center;
}

.form-field select option { background: var(--steel); color: var(--white); }

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--gray);
  opacity: 0.6;
}

.form-submit { padding: 0; border: none; }

.form-submit button {
  width: 100%;
  padding: 24px;
  background: var(--orange);
  color: var(--carbon);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: background 0.2s;
}

.form-submit button:hover  { background: var(--orange-dim); }
.form-submit button svg    { width: 14px; height: 14px; }

/* ── 12. FOOTER ── */
footer {
  position: relative;
  z-index: 1;
  background: var(--carbon);
  border-top: 1px solid var(--border);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo { display: flex; align-items: center; gap: 12px; }
.footer-logo img { height: 32px; filter: brightness(0.7); }

.footer-legal {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gray);
  letter-spacing: 0.05em;
}

.footer-legal a { color: var(--gray); text-decoration: none; transition: color 0.2s; }
.footer-legal a:hover { color: var(--orange); }

/* ── 13. BARRE DE DIAGNOSTIC ── */
.diagnostic-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(13, 13, 13, 0.95);
  border-top: 1px solid var(--border);
  padding: 10px 48px;
  display: flex;
  align-items: center;
  gap: 32px;
  z-index: 99;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--gray);
  letter-spacing: 0.1em;
  backdrop-filter: blur(8px);
}

.diag-item { display: flex; align-items: center; gap: 6px; }

.diag-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
  animation: blink 2s ease infinite;
}

.diag-dot.orange { background: var(--orange); animation-delay: 0.5s; }

.diag-spacer { flex: 1; }

/* ── 14. RESPONSIVE ── */
@media (max-width: 1024px) {
  nav                  { padding: 0 24px; height: 60px; }
  .nav-links           { display: none; }
  section              { padding: 80px 24px; }
  #hero                { padding: 100px 24px 60px; }
  #stats               { padding: 60px 24px; }

  /* Méthode : 1 colonne */
  .methode-grid        { grid-template-columns: 1fr; }
  .methode-step        { border-right: none !important; }
  .methode-step:nth-last-child(-n+2) { border-bottom: 1px solid var(--border); }
  .methode-step:last-child           { border-bottom: none; }

  /* Solutions : 1 colonne */
  .solutions-grid      { grid-template-columns: 1fr; gap: 0; }
  .solution-card       { border-bottom: 1px solid var(--border); }
  .solutions-header    { flex-direction: column; align-items: flex-start; gap: 16px; }

  /* Stats : 2 colonnes */
  .stats-grid                                        { grid-template-columns: 1fr 1fr; }
  .stat-item:nth-child(2)                            { border-right: none; }
  .stat-item:nth-child(3)                            { border-right: 1px solid var(--border); }
  .stat-item:nth-child(3), .stat-item:nth-child(4)  { border-top: 1px solid var(--border); }

  /* Contact : 1 colonne */
  .contact-wrapper     { grid-template-columns: 1fr; gap: 48px; }

  /* Trust : vertical */
  .trust-inner         { flex-direction: column; }
  .trust-item          { border-right: none; border-bottom: 1px solid var(--border); }

  /* Footer : centré */
  footer               { flex-direction: column; gap: 20px; text-align: center; }

  /* Masqués sur mobile */
  .diagnostic-bar      { display: none; }
  .hero-bg-text        { display: none; }
}

@media (max-width: 640px) {
  .form-row                        { grid-template-columns: 1fr; }
  .form-field                      { border-right: none !important; }
  .form-field:not(.full)           { border-bottom: 1px solid var(--border); }
}

/* ── 15. SCROLLBAR & CURSEUR ── */
::-webkit-scrollbar       { width: 4px; }
::-webkit-scrollbar-track { background: var(--carbon); }
::-webkit-scrollbar-thumb { background: var(--border); }
::-webkit-scrollbar-thumb:hover { background: var(--orange); }

* { cursor: default; }
a, button, [role="button"] { cursor: pointer; }