/* ============================================
   JL Montage PC — Styles
   Design: Dark, moderne, professionnel
   ============================================ */

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

:root {
  /* Couleurs principales */
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: #16161e;
  --bg-card-hover: #1c1c26;
  --bg-elevated: #1e1e28;

  /* Texte */
  --text-primary: #e8e8ed;
  --text-secondary: #9393a5;
  --text-muted: #5f5f72;

  /* Accents */
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-dark: #4f46e5;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --accent-glow-strong: rgba(99, 102, 241, 0.3);

  /* Accents secondaires */
  --green: #34d399;
  --green-bg: rgba(52, 211, 153, 0.1);
  --amber: #fbbf24;
  --amber-bg: rgba(251, 191, 36, 0.1);

  /* Bordures */
  --border: rgba(255, 255, 255, 0.06);
  --border-light: rgba(255, 255, 255, 0.1);

  /* Ombres */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px var(--accent-glow);

  /* Typo */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Layout */
  --container-max: 1200px;
  --section-padding: 6rem 0;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration: 0.3s;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- Section Headers --- */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3.5rem;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-light);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35rem 1rem;
  background: var(--accent-glow);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 100px;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================
   NAVIGATION
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: background var(--duration) var(--ease),
              padding var(--duration) var(--ease),
              backdrop-filter var(--duration) var(--ease);
}

.header--scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.nav__logo-icon {
  font-size: 1.3rem;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav__link {
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration) var(--ease);
}

.nav__link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav__link--cta {
  color: white;
  background: var(--accent);
  margin-left: 0.5rem;
}

.nav__link--cta:hover {
  background: var(--accent-dark);
  color: white;
}

.nav__link--active:not(.nav__link--cta) {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

/* Mobile toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--duration) var(--ease);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 0 5rem;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--accent-glow-strong), transparent),
    radial-gradient(ellipse 60% 40% at 80% 60%, rgba(99, 102, 241, 0.05), transparent);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 0.4rem 1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  border-radius: 100px;
  margin-bottom: 1.5rem;
}

.hero__title {
  font-size: clamp(2.2rem, 6vw, 3.8rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.hero__title--accent {
  background: linear-gradient(135deg, var(--accent-light), var(--accent), #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 2.5rem;
  max-width: 600px;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.hero__stats {
  display: flex;
  gap: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.hero__stat {
  display: flex;
  flex-direction: column;
}

.hero__stat-number {
  font-size: 2rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
}

.hero__stat-suffix {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent-light);
}

.hero__stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--duration) var(--ease);
  white-space: nowrap;
}

.btn--primary {
  background: var(--accent);
  color: white;
  box-shadow: 0 2px 12px var(--accent-glow);
}

.btn--primary:hover {
  background: var(--accent-dark);
  box-shadow: 0 4px 20px var(--accent-glow-strong);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

.btn--outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.btn--full {
  width: 100%;
}

/* ============================================
   SERVICES
   ============================================ */
.services {
  padding: var(--section-padding);
  background: var(--bg-secondary);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all var(--duration) var(--ease);
}

.service-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(99, 102, 241, 0.2);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.service-card__icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  display: block;
}

.service-card__title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
}

.service-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================
   FORMULES / TARIFS
   ============================================ */
.formules {
  padding: var(--section-padding);
}

.formules__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  align-items: start;
  margin-bottom: 4rem;
}

.formule-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  transition: all var(--duration) var(--ease);
}

.formule-card:hover {
  border-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.formule-card--featured {
  border-color: rgba(99, 102, 241, 0.3);
  background: linear-gradient(180deg, rgba(99, 102, 241, 0.06) 0%, var(--bg-card) 50%);
  box-shadow: var(--shadow-glow);
  transform: scale(1.03);
}

.formule-card--featured:hover {
  transform: scale(1.03) translateY(-3px);
  border-color: rgba(99, 102, 241, 0.5);
}

.formule-card__ribbon {
  position: absolute;
  top: -1px;
  right: 2rem;
  background: var(--accent);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 1rem 0.4rem;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  letter-spacing: 0.03em;
}

.formule-card__header {
  margin-bottom: 1.5rem;
}

.formule-card__badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.formule-card__name {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 0.4rem 0 0.3rem;
}

.formule-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.formule-card__price {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.formule-card__amount {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
}

.formule-card__features {
  margin-bottom: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.formule-card__features li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.formule-card__features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 700;
  font-size: 0.85rem;
}

/* Extras */
.formules__extras {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.formules__extras-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  text-align: center;
}

.formules__extras-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.extra-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--duration) var(--ease);
}

.extra-item:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
}

.extra-item__icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.extra-item strong {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.extra-item span:not(.extra-item__icon) {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================
   À PROPOS
   ============================================ */
.apropos {
  padding: var(--section-padding);
  background: var(--bg-secondary);
}

.apropos__content {
  max-width: 800px;
  margin: 0 auto;
}

.apropos__text p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.apropos__values {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.apropos__value {
  display: flex;
  gap: 0.75rem;
  padding: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--duration) var(--ease);
}

.apropos__value:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
}

.apropos__value-icon {
  flex-shrink: 0;
  font-size: 1.2rem;
}

.apropos__value strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.apropos__value p {
  font-size: 0.85rem !important;
  color: var(--text-muted) !important;
  margin-bottom: 0 !important;
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
  padding: var(--section-padding);
}

.contact__wrapper {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: start;
}

.contact__form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

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

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.form-group label .optional {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  transition: border-color var(--duration) var(--ease),
              box-shadow var(--duration) var(--ease);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%235f5f72' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-group select option {
  background: var(--bg-card);
  color: var(--text-primary);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.contact__form .btn {
  grid-column: 1 / -1;
  margin-top: 0.5rem;
}

/* Info sidebar */
.contact__info-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.contact__info-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.contact__info-item {
  display: flex;
  gap: 0.75rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.contact__info-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.contact__info-item span:first-child {
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact__info-item strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.contact__info-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 4rem 0 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}

.footer__content {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
}

.footer__brand p {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 300px;
}

.footer__links h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.footer__links li {
  margin-bottom: 0.6rem;
}

.footer__links a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color var(--duration) var(--ease);
}

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

.footer__bottom {
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer__bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================
   ANIMATIONS (entrées au scroll)
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.stagger > .fade-in:nth-child(1) { transition-delay: 0s; }
.stagger > .fade-in:nth-child(2) { transition-delay: 0.08s; }
.stagger > .fade-in:nth-child(3) { transition-delay: 0.16s; }
.stagger > .fade-in:nth-child(4) { transition-delay: 0.24s; }
.stagger > .fade-in:nth-child(5) { transition-delay: 0.32s; }
.stagger > .fade-in:nth-child(6) { transition-delay: 0.4s; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .formules__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .formule-card--featured {
    grid-column: 1 / -1;
    max-width: 420px;
    justify-self: center;
  }

  .formules__extras-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

@media (max-width: 768px) {
  :root {
    --section-padding: 4rem 0;
  }

  .nav__list {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border);
    padding: 5rem 2rem 2rem;
    gap: 0.25rem;
    transition: right var(--duration) var(--ease);
    z-index: 999;
  }

  .nav__list.active {
    right: 0;
  }

  .nav__list .nav__link {
    display: block;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border-radius: var(--radius-sm);
  }

  .nav__list .nav__link--cta {
    margin-left: 0;
    margin-top: 0.5rem;
    text-align: center;
  }

  .nav__toggle {
    display: flex;
    z-index: 1001;
  }

  .nav__toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

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

  .nav__toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero {
    padding: 7rem 0 3rem;
    min-height: auto;
  }

  .hero__title {
    font-size: clamp(1.8rem, 8vw, 2.8rem);
  }

  .hero__stats {
    gap: 2rem;
  }

  .hero__stat-number {
    font-size: 1.6rem;
  }

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

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

  .formule-card--featured {
    max-width: 100%;
    transform: none;
  }

  .formule-card--featured:hover {
    transform: translateY(-3px);
  }

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

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

  .contact__form {
    grid-template-columns: 1fr;
    padding: 1.5rem;
  }

  .contact__info-card {
    padding: 1.5rem;
  }

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

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .hero__stats {
    flex-direction: column;
    gap: 1rem;
  }

  .hero__stat {
    flex-direction: row;
    align-items: baseline;
    gap: 0.5rem;
  }
}

/* ============================================
   FORMULAIRE SUCCESS STATE
   ============================================ */
.form-success {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem 2rem;
}

.form-success__icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.form-success__title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.form-success__desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
}