/*
 * SARL NAVAPRIM - Feuille de style principale
 * Thème: Industriel professionnel français
 * Palette: Charcoal (#333333), Steel Blue (#4682B4), Safety Orange (#FF8C00)
 */

/* ============================================
   VARIABLES CSS - THÈME INDUSTRIEL
   ============================================ */

:root {
  /* Couleurs principales - Mode Clair */
  --color-primary: #1d3557;
  --color-secondary: #457b9d;
  --color-accent: #a8dadc;
  --color-neutral: #f1faee;
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-text-light: #555555;
  --color-border: #e0e0e0;
  --color-shadow: rgba(0, 0, 0, 0.1);

  /* Couleurs industrielles */
  --color-charcoal: #333333;
  --color-steel-blue: #4682B4;
  --color-safety-orange: #FF8C00;
  --color-metallic-light: #f5f5f5;
  --color-metallic-dark: #2a2a2a;

  /* Typographie */
  --font-primary: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-secondary: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Roboto Mono', monospace;

  /* Espacements */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Bordures */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;

  /* 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 25px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);

  /* Z-index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal: 400;
  --z-popover: 500;
  --z-tooltip: 600;
}

/* Mode Sombre */
[data-theme="dark"] {
  --color-primary: #a8dadc;
  --color-secondary: #457b9d;
  --color-accent: #1d3557;
  --color-neutral: #1a1a1a;
  --color-bg: #0f1419;
  --color-text: #f1faee;
  --color-text-light: #cccccc;
  --color-border: #2a2a2a;
  --color-shadow: rgba(0, 0, 0, 0.3);

  --color-charcoal: #f1faee;
  --color-steel-blue: #5a9bd4;
  --color-metallic-light: #1a1a1a;
  --color-metallic-dark: #f5f5f5;
}

/* ============================================
   RESET ET BASE
   ============================================ */

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

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

body {
  font-family: var(--font-secondary);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* ============================================
   TYPOGRAPHIE
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: clamp(1rem, 2.5vw, 1.5rem); }
h5 { font-size: clamp(0.875rem, 2vw, 1.25rem); }
h6 { font-size: clamp(0.75rem, 1.5vw, 1rem); }

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
}

a {
  color: var(--color-steel-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover,
a:focus {
  color: var(--color-safety-orange);
  outline: none;
}

a:focus-visible {
  outline: 2px solid var(--color-safety-orange);
  outline-offset: 2px;
}

/* ============================================
   HEADER ET NAVIGATION
   ============================================ */

.header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--color-charcoal);
  box-shadow: var(--shadow-md);
  transition: background-color var(--transition-normal);
}

.header__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.header__logo-img {
  width: 232px;
  height: auto;
  max-height: 70px;
  object-fit: contain;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-family: var(--font-primary);
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--color-neutral);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav__link:hover,
.nav__link:focus {
  color: var(--color-safety-orange);
  background-color: rgba(255, 140, 0, 0.1);
}

.nav__link--active {
  color: var(--color-safety-orange);
}

.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 2px;
  background-color: var(--color-safety-orange);
}

.nav__icon {
  font-size: 1.25rem;
}

/* Actions du header */
.header__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Toggle thème */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background-color: var(--color-steel-blue);
  border: none;
  border-radius: var(--radius-sm);
  color: var(--color-neutral);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--color-safety-orange);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--color-safety-orange);
  outline-offset: 2px;
}

/* Sélecteur de langue */
.lang-switcher {
  display: flex;
  border: 1px solid var(--color-steel-blue);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.lang-switcher__btn {
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: transparent;
  border: none;
  color: var(--color-neutral);
  font-family: var(--font-primary);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.lang-switcher__btn:hover {
  background-color: rgba(255, 140, 0, 0.2);
}

.lang-switcher__btn--active {
  background-color: var(--color-safety-orange);
}

/* Contact rapide */
.header__contact {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  font-size: 0.75rem;
  color: var(--color-neutral);
}

.header__phone {
  font-family: var(--font-primary);
  font-weight: 600;
  color: var(--color-safety-orange);
}

/* Menu mobile */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background-color: transparent;
  border: none;
  padding: var(--spacing-sm);
  cursor: pointer;
}

.menu-toggle__span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-neutral);
  transition: all var(--transition-fast);
  border-radius: 2px;
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__media {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: blur(3px);
  transform: scale(1.05);
}

.hero__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  background: linear-gradient(135deg, rgba(29, 53, 87, 0.85) 0%, rgba(51, 51, 51, 0.75) 100%);
}

.hero__content {
  position: relative;
  z-index: 3;
  max-width: 900px;
  padding: var(--spacing-3xl) var(--spacing-lg);
  text-align: center;
  color: var(--color-neutral);
}

.hero__title {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 800;
  margin-bottom: var(--spacing-lg);
  color: var(--color-neutral);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  margin-bottom: var(--spacing-xl);
  color: rgba(241, 250, 238, 0.95);
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  background-color: var(--color-safety-orange);
  color: var(--color-charcoal);
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-md);
}

.hero__cta:hover {
  background-color: #e67e00;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.hero__cta:focus-visible {
  outline: 2px solid var(--color-neutral);
  outline-offset: 2px;
}

/* ============================================
   SECTIONS
   ============================================ */

.section {
  padding: var(--spacing-3xl) var(--spacing-lg);
  position: relative;
}

.section--primary {
  background-color: var(--color-metallic-light);
}

.section--secondary {
  background-color: var(--color-neutral);
}

.section--dark {
  background-color: var(--color-charcoal);
  color: var(--color-neutral);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4,
.section--dark h5,
.section--dark h6 {
  color: var(--color-neutral);
}

.section--dark p {
  color: rgba(241, 250, 238, 0.85);
}

.section__container {
  max-width: 1200px;
  margin: 0 auto;
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section__title {
  position: relative;
  display: inline-block;
  margin-bottom: var(--spacing-md);
}

.section__title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-steel-blue), var(--color-safety-orange));
}

.section__subtitle {
  font-size: 1.125rem;
  max-width: 700px;
  margin: 0 auto;
}

/* Section avec fond image */
.section--bg-image {
  position: relative;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.section--bg-image::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(29, 53, 87, 0.9);
  filter: blur(3px);
}

.section--bg-image > * {
  position: relative;
  z-index: 1;
}

/* ============================================
   GRILLES ET CARTES
   ============================================ */

.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--color-steel-blue), var(--color-safety-orange));
  transform: scaleY(0);
  transition: transform var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-steel-blue);
}

.card:hover::before {
  transform: scaleY(1);
}

.card__icon {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-steel-blue), var(--color-secondary));
  color: var(--color-neutral);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
  font-size: 1.75rem;
}

.card__title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.card__content {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-safety-orange);
  font-weight: 600;
  font-size: 0.875rem;
}

.card__link:hover {
  gap: var(--spacing-sm);
}

/* ============================================
   BOUTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-family: var(--font-primary);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn--primary {
  background-color: var(--color-steel-blue);
  color: var(--color-neutral);
}

.btn--primary:hover {
  background-color: #3a6ea0;
}

.btn--secondary {
  background-color: var(--color-safety-orange);
  color: var(--color-charcoal);
}

.btn--secondary:hover {
  background-color: #e67e00;
}

.btn--outline {
  background-color: transparent;
  border: 2px solid var(--color-steel-blue);
  color: var(--color-steel-blue);
}

.btn--outline:hover {
  background-color: var(--color-steel-blue);
  color: var(--color-neutral);
}

.btn--large {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1rem;
}

.btn:focus-visible {
  outline: 2px solid var(--color-safety-orange);
  outline-offset: 2px;
}

/* ============================================
   FORMULAIRES
   ============================================ */

.form {
  max-width: 600px;
  margin: 0 auto;
}

.form__group {
  margin-bottom: var(--spacing-lg);
}

.form__label {
  display: block;
  font-family: var(--font-primary);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.form__input,
.form__textarea,
.form__select {
  width: 100%;
  padding: var(--spacing-md);
  font-family: var(--font-secondary);
  font-size: 1rem;
  color: var(--color-text);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
  outline: none;
  border-color: var(--color-steel-blue);
  box-shadow: 0 0 0 3px rgba(70, 130, 180, 0.2);
}

.form__textarea {
  min-height: 150px;
  resize: vertical;
}

.form__checkbox,
.form__radio {
  margin-right: var(--spacing-sm);
}

.form__help {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-top: var(--spacing-xs);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
  background-color: var(--color-charcoal);
  color: var(--color-neutral);
  padding: var(--spacing-3xl) var(--spacing-lg) var(--spacing-lg);
}

.footer__container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer__title {
  color: var(--color-neutral);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-lg);
  position: relative;
  padding-bottom: var(--spacing-md);
}

.footer__title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--color-safety-orange);
}

.footer__list {
  list-style: none;
}

.footer__item {
  margin-bottom: var(--spacing-sm);
}

.footer__link {
  color: rgba(241, 250, 238, 0.8);
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-safety-orange);
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  font-size: 0.875rem;
  color: rgba(241, 250, 238, 0.8);
}

.footer__contact-icon {
  color: var(--color-safety-orange);
  flex-shrink: 0;
}

.footer__bottom {
  border-top: 1px solid rgba(241, 250, 238, 0.1);
  padding-top: var(--spacing-lg);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  font-size: 0.75rem;
  color: rgba(241, 250, 238, 0.6);
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

/* ============================================
   ACCESSIBILITÉ
   ============================================ */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 2px solid var(--color-safety-orange);
  outline-offset: 2px;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--color-safety-orange);
  color: var(--color-charcoal);
  font-weight: 600;
  z-index: var(--z-tooltip);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--spacing-md);
}

/* ============================================
   UTILITAIRES
   ============================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-md); }
.mt-2 { margin-top: var(--spacing-lg); }
.mt-3 { margin-top: var(--spacing-xl); }
.mt-4 { margin-top: var(--spacing-2xl); }

.mb-1 { margin-bottom: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-lg); }
.mb-3 { margin-bottom: var(--spacing-xl); }
.mb-4 { margin-bottom: var(--spacing-2xl); }

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

@media (max-width: 1024px) {
  .header__nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-charcoal);
    padding: var(--spacing-lg);
    flex-direction: column;
  }

  .header__nav--open {
    display: flex;
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .nav__link {
    width: 100%;
    justify-content: center;
    padding: var(--spacing-md);
  }

  .header__contact {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .header__actions {
    order: -1;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }

  .hero__content {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .section {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer__legal {
    justify-content: center;
  }
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

.pulse {
  animation: pulse 2s ease-in-out infinite;
}