/*
 * PLASTIM SAS - Site Web Corporatif
 * Thème: L'Élégance Parisienne de Luxe
 * Palette de couleurs: Noir Profond, Soie Ivoire, Or Royal
 * Typographie: Didot/Bodoni (titres), Montserrat (corps)
 */

/* ========================================
   VARIABLES CSS & THÈME DE COULEURS
   ======================================== */

:root {
  /* Couleurs principales - Thème Luxe Parisien */
  --color-deep-noir: #050505;
  --color-ivory-silk: #F9F9F9;
  --color-royal-gold: #D4AF37;
  --color-royal-gold-light: #E8C86E;
  --color-royal-gold-dark: #B8962E;

  /* Thème Clair (Slate & Red) */
  --light-primary: #2b2d42;
  --light-secondary: #8d99ae;
  --light-accent: #edf2f4;
  --light-neutral: #ef233c;
  --light-bg: #ffffff;
  --light-text: #1a1a1a;

  /* Typographie */
  --font-heading: 'Didot', 'Bodoni MT', 'Bodoni', 'Times New Roman', serif;
  --font-body: 'Montserrat', 'Segoe UI', 'Helvetica Neue', sans-serif;
  --font-mono: 'Courier New', monospace;

  /* Espacement */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 4rem;
  --spacing-xxl: 6rem;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Bordures */
  --border-thin: 0.5px solid var(--color-ivory-silk);
  --border-gold: 1px solid var(--color-royal-gold);

  /* Ombres */
  --shadow-subtle: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-elegant: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-gold: 0 4px 16px rgba(212, 175, 55, 0.25);

  /* Z-index */
  --z-header: 1000;
  --z-dropdown: 999;
  --z-modal: 2000;
  --z-overlay: 1999;
}

/* Mode Sombre */
[data-theme="dark"] {
  --light-primary: #F9F9F9;
  --light-secondary: #8d99ae;
  --light-accent: #2b2d42;
  --light-neutral: #ef233c;
  --light-bg: #050505;
  --light-text: #F9F9F9;
  --color-ivory-silk: #1a1a1a;
}

/* ========================================
   RESET & BASE
   ======================================== */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--light-bg);
  color: var(--light-text);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Focus visible pour accessibilité */
:focus-visible {
  outline: 2px solid var(--color-royal-gold);
  outline-offset: 2px;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  letter-spacing: 0.02em;
  line-height: 1.3;
  color: var(--light-text);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 300;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--spacing-lg);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--spacing-md);
}

h4 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-md);
  font-size: 1rem;
  line-height: 1.8;
}

a {
  color: var(--color-royal-gold);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-royal-gold-light);
}

/* ========================================
   NAVIGATION - L'ÉLÉGANCE
   ======================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  background-color: transparent;
  transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
  padding: var(--spacing-md) 0;
}

.header.scrolled {
  background-color: rgba(249, 249, 249, 0.95);
  box-shadow: var(--shadow-subtle);
  backdrop-filter: blur(10px);
}

[data-theme="dark"] .header.scrolled {
  background-color: rgba(5, 5, 5, 0.95);
}

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

.header__logo {
  flex-shrink: 0;
}

.header__logo svg,
.header__logo img {
  width: 232px;
  height: 70px;
  display: block;
}

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

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

.header__nav-link {
  position: relative;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--light-text);
  padding: var(--spacing-xs) 0;
  transition: color var(--transition-fast);
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-royal-gold);
  transition: width var(--transition-normal);
}

.header__nav-link:hover {
  color: var(--color-royal-gold);
}

.header__nav-link:hover::after {
  width: 100%;
}

.header__nav-link.active {
  color: var(--color-royal-gold);
}

.header__nav-link.active::after {
  width: 100%;
}

/* Theme Toggle */
.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--light-text);
  transition: color var(--transition-fast);
}

.theme-toggle:hover {
  color: var(--color-royal-gold);
}

.theme-toggle span {
  font-size: 1.5rem;
}

/* Mobile Menu Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  flex-direction: column;
  gap: 6px;
}

.mobile-toggle__span {
  width: 28px;
  height: 1px;
  background-color: var(--light-text);
  transition: all var(--transition-normal);
}

.mobile-toggle[aria-expanded="true"] .mobile-toggle__span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.mobile-toggle[aria-expanded="true"] .mobile-toggle__span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle[aria-expanded="true"] .mobile-toggle__span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Navigation */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--light-bg);
  z-index: var(--z-dropdown);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xl);
  transform: translateX(100%);
  transition: transform var(--transition-slow);
}

.mobile-nav.active {
  transform: translateX(0);
}

.mobile-nav__link {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--light-text);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-normal);
}

.mobile-nav.active .mobile-nav__link {
  opacity: 1;
  transform: translateY(0);
}

.mobile-nav__link:nth-child(1) { transition-delay: 0.1s; }
.mobile-nav__link:nth-child(2) { transition-delay: 0.2s; }
.mobile-nav__link:nth-child(3) { transition-delay: 0.3s; }
.mobile-nav__link:nth-child(4) { transition-delay: 0.4s; }
.mobile-nav__link:nth-child(5) { transition-delay: 0.5s; }

.mobile-nav__link:hover {
  color: var(--color-royal-gold);
}

.mobile-nav__close {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

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

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__media {
  position: absolute;
  top: 0;
  left: 0;
  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%;
  background: linear-gradient(to bottom, rgba(5, 5, 5, 0.4), rgba(5, 5, 5, 0.6));
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--color-ivory-silk);
  padding: var(--spacing-xl);
  max-width: 900px;
  animation: fadeInUp 1s ease-out;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 300;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-lg);
  color: var(--color-ivory-silk);
}

.hero__subtitle {
  font-family: var(--font-body);
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 300;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-xl);
  opacity: 0.9;
}

.hero__cta {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  border: var(--border-gold);
  background: transparent;
  color: var(--color-ivory-silk);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.hero__cta:hover {
  background-color: var(--color-royal-gold);
  color: var(--color-deep-noir);
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
}

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

.section {
  padding: var(--spacing-xxl) 0;
  position: relative;
}

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

[data-theme="dark"] .section--neutral {
  background-color: #0a0a0a;
}

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

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

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

.section__title::after {
  content: '';
  position: absolute;
  bottom: - var(--spacing-sm);
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 1px;
  background-color: var(--color-royal-gold);
}

.section__subtitle {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-royal-gold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* Background Image Section */
.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%;
  backdrop-filter: blur(3px);
  background-color: rgba(249, 249, 249, 0.85);
  z-index: 0;
}

[data-theme="dark"] .section--bg-image::before {
  background-color: rgba(5, 5, 5, 0.85);
}

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

/* ========================================
   CARTES & GRILLES
   ======================================== */

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

.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(220px, 1fr));
}

.card {
  background-color: var(--light-bg);
  border: var(--border-thin);
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-royal-gold), transparent);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-elegant);
  border-color: var(--color-royal-gold);
}

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

.card__icon {
  font-size: 2.5rem;
  color: var(--color-royal-gold);
  margin-bottom: var(--spacing-md);
}

.card__title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.card__text {
  color: var(--light-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* Card Image */
.card--image {
  padding: 0;
  border: none;
}

.card__image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  filter: blur(3px);
  transition: filter var(--transition-normal);
}

.card:hover .card__image {
  filter: blur(0);
}

.card__content {
  padding: var(--spacing-lg);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.btn--primary {
  background-color: var(--color-royal-gold);
  color: var(--color-deep-noir);
}

.btn--primary:hover {
  background-color: var(--color-royal-gold-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
}

.btn--outline {
  background: transparent;
  border: var(--border-gold);
  color: var(--color-royal-gold);
}

.btn--outline:hover {
  background-color: var(--color-royal-gold);
  color: var(--color-deep-noir);
}

.btn--ghost {
  background: transparent;
  color: var(--light-text);
  padding: var(--spacing-sm) var(--spacing-md);
}

.btn--ghost:hover {
  color: var(--color-royal-gold);
}

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

.btn--sm {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.75rem;
}

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

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

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

.form__label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--light-text);
  margin-bottom: var(--spacing-sm);
}

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

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
  outline: none;
  border-color: var(--color-royal-gold);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

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

.form__checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.form__checkbox input[type="checkbox"] {
  margin-top: 4px;
  accent-color: var(--color-royal-gold);
}

.form__checkbox-label {
  font-size: 0.875rem;
  color: var(--light-secondary);
}

/* ========================================
   CONTACT INFO & MAP
   ======================================== */

.contact-info {
  display: grid;
  gap: var(--spacing-lg);
}

.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.contact-info__icon {
  font-size: 1.5rem;
  color: var(--color-royal-gold);
  flex-shrink: 0;
}

.contact-info__label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-royal-gold);
  margin-bottom: var(--spacing-xs);
}

.contact-info__value {
  font-size: 1rem;
  color: var(--light-text);
}

.contact-info__value a {
  color: var(--light-text);
  transition: color var(--transition-fast);
}

.contact-info__value a:hover {
  color: var(--color-royal-gold);
}

.map-container {
  width: 100%;
  height: 400px;
  border: var(--border-thin);
  overflow: hidden;
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

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

.footer {
  background-color: var(--color-deep-noir);
  color: var(--color-ivory-silk);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}

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

.footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-royal-gold);
}

.footer__nav {
  list-style: none;
}

.footer__nav-link {
  display: block;
  color: var(--color-ivory-silk);
  padding: var(--spacing-xs) 0;
  transition: color var(--transition-fast);
}

.footer__nav-link:hover {
  color: var(--color-royal-gold);
}

.footer__bottom {
  border-top: 1px solid rgba(249, 249, 249, 0.1);
  padding-top: var(--spacing-lg);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
}

.footer__copyright {
  font-size: 0.875rem;
  color: rgba(249, 249, 249, 0.7);
}

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

.footer__legal-link {
  font-size: 0.875rem;
  color: rgba(249, 249, 249, 0.7);
  transition: color var(--transition-fast);
}

.footer__legal-link:hover {
  color: var(--color-royal-gold);
}

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

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

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

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

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

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

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

.text-gold { color: var(--color-royal-gold); }
.text-muted { color: var(--light-secondary); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.pt-sm { padding-top: var(--spacing-sm); }
.pt-md { padding-top: var(--spacing-md); }
.pt-lg { padding-top: var(--spacing-lg); }
.pt-xl { padding-top: var(--spacing-xl); }

.pb-sm { padding-bottom: var(--spacing-sm); }
.pb-md { padding-bottom: var(--spacing-md); }
.pb-lg { padding-bottom: var(--spacing-lg); }
.pb-xl { padding-bottom: var(--spacing-xl); }

.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;
}

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

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

@media (max-width: 992px) {
  .header__nav {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .hero__title {
    font-size: clamp(2rem, 6vw, 3.5rem);
  }

  .section {
    padding: var(--spacing-xl) 0;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
  }

  .header__container {
    padding: 0 var(--spacing-md);
  }

  .section__container {
    padding: 0 var(--spacing-md);
  }

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

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

  .hero__cta {
    width: 100%;
    max-width: 300px;
  }
}

@media (max-width: 480px) {
  .section {
    padding: var(--spacing-lg) 0;
  }

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

/* ========================================
   ACCESSIBILITÉ - WCAG 2.1 AA
   ======================================== */

/* Contraste amélioré pour les liens */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-royal-gold);
  outline-offset: 2px;
}

/* Skip link pour navigation clavier */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-royal-gold);
  color: var(--color-deep-noir);
  padding: var(--spacing-sm) var(--spacing-md);
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}

/* Préférence utilisateur pour mouvement réduit */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ========================================
   IMPRESSION
   ======================================== */

@media print {
  .header,
  .footer,
  .btn,
  .theme-toggle,
  .mobile-toggle {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .section {
    page-break-inside: avoid;
  }
}