/* ================================================
   ÉPONGE EXPERT - DESIGN MODERNE
   Typographie: DM Sans + Playfair Display
   Style: Épuré, dynamique, sophistiqué
   ================================================ */

/* ==================== VARIABLES ==================== */
:root {
  /* Palette de couleurs sophistiquée */
  --primary: #0A7EA4;
  --primary-dark: #085D7A;
  --primary-light: #E6F4F8;
  --accent: #FF6B35;
  --accent-light: #FFE8E0;
  
  /* Neutrals */
  --bg: #FAFBFC;
  --white: #FFFFFF;
  --text-dark: #1A2332;
  --text-body: #4A5568;
  --text-muted: #718096;
  --border: #E2E8F0;
  --card-bg: #FFFFFF;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(26, 35, 50, 0.04);
  --shadow-md: 0 4px 16px rgba(26, 35, 50, 0.08);
  --shadow-lg: 0 12px 32px rgba(26, 35, 50, 0.12);
  --shadow-xl: 0 20px 48px rgba(26, 35, 50, 0.16);
  
  /* Spacing */
  --container-width: 1200px;
  --section-spacing: 120px;
  --element-spacing: 32px;
  
  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

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

body {
  font-family: 'DM Sans', system-ui, -apple-system, sans-serif;
  color: var(--text-body);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

/* ==================== TYPOGRAPHY ==================== */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Playfair Display', serif;
  color: var(--text-dark);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.5em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1em;
}

/* ==================== HEADER ==================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition-base);
}

.header-wrapper {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  z-index: 10;
}

.logo {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: var(--transition-base);
}

.logo:hover {
  transform: rotate(-5deg) scale(1.05);
  box-shadow: var(--shadow-lg);
}

.logo img {
  width: 75%;
  height: 75%;
  object-fit: contain;
}

.brand-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.brand-sub {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  position: relative;
  color: var(--text-body);
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-base);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary);
  transform: translateX(-50%);
  transition: var(--transition-base);
}

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

.nav-link:hover::after {
  width: 80%;
}

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 10;
}

.hamburger span {
  width: 28px;
  height: 3px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: var(--transition-base);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

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

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(8px, -8px);
}

/* ==================== BUTTONS ==================== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  background: var(--primary);
  color: var(--white);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition-base);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
}

.btn-primary:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-large {
  padding: 1.125rem 2.5rem;
  font-size: 1.125rem;
}

/* ==================== HERO SECTION ==================== */
.hero {
  position: relative;
  padding: 6rem 2rem 8rem;
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--white) 100%);
  overflow: hidden;
}

.hero-container {
  max-width: var(--container-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content {
  animation: slideInLeft 0.8s ease;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1.25rem;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.5px;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
  animation: float 3s ease-in-out infinite;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--text-dark), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-body);
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

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

.hero-visual {
  position: relative;
  animation: slideInRight 0.8s ease;
}

.hero-image-wrapper {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  transform: perspective(1000px) rotateY(-5deg);
  transition: var(--transition-slow);
}

.hero-image-wrapper:hover {
  transform: perspective(1000px) rotateY(0deg) scale(1.02);
}

.hero-image-wrapper img {
  width: 100%;
  height: auto;
  display: block;
}

.hero-decoration {
  position: absolute;
  top: 10%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--primary-light) 0%, transparent 70%);
  border-radius: 50%;
  opacity: 0.5;
  pointer-events: none;
  animation: pulse 4s ease-in-out infinite;
}

/* ==================== SECTIONS ==================== */
.section {
  padding: var(--section-spacing) 2rem;
}

.section-container {
  max-width: var(--container-width);
  margin: 0 auto;
}

.section-container.narrow {
  max-width: 800px;
}

.section-header {
  margin-bottom: 4rem;
}

.section-header.centered {
  text-align: center;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  font-family: 'DM Sans', sans-serif;
  font-weight: 400;
}

/* ==================== PRODUCTS SECTION ==================== */
.products-section {
  background: var(--white);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
}

.product-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
  opacity: 0;
  transform: translateY(30px);
  border: 1px solid var(--border);
}

.product-card.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.product-image {
  position: relative;
  width: 100%;
  height: 280px;
  overflow: hidden;
  background: var(--bg);
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.product-card:hover .product-image img {
  transform: scale(1.08);
}

.product-content {
  padding: 2rem;
}

.product-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.product-description {
  color: var(--text-body);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.product-footer {
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.product-price {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text-muted);
}

/* ==================== FEATURES SECTION ==================== */
.features-section {
  background: linear-gradient(180deg, var(--white) 0%, var(--bg) 100%);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--white);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition-base);
  opacity: 0;
  transform: translateY(30px);
}

.feature-card.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

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

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  transition: var(--transition-base);
}

.feature-icon svg {
  width: 40px;
  height: 40px;
  stroke-width: 2;
}

.feature-card:hover .feature-icon {
  background: var(--primary);
  color: var(--white);
  transform: scale(1.1) rotate(5deg);
}

.feature-title {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-dark);
}

.feature-description {
  color: var(--text-body);
  line-height: 1.7;
}

/* ==================== ABOUT SECTION ==================== */
.about-section {
  background: var(--white);
}

.about-content {
  text-align: center;
  padding: 3rem;
  background: var(--bg);
  border-radius: var(--radius-xl);
  border: 2px solid var(--border);
}

.about-text {
  font-size: 1.125rem;
  line-height: 1.9;
  color: var(--text-body);
}

/* ==================== TEAM SECTION ==================== */
.team-section {
  background: linear-gradient(180deg, var(--bg) 0%, var(--primary-light) 100%);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2.5rem;
}

.team-member {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition-base);
  opacity: 0;
  transform: translateY(30px);
}

.team-member.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

.team-member:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.member-image {
  width: 160px;
  height: 160px;
  margin: 0 auto 1.5rem;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--primary-light);
  box-shadow: var(--shadow-md);
  transition: var(--transition-base);
}

.team-member:hover .member-image {
  border-color: var(--primary);
  transform: scale(1.05);
}

.member-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.member-name {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}

.member-role {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.5;
}

/* ==================== FOOTER ==================== */
.site-footer {
  background: var(--text-dark);
  color: var(--white);
  padding: 4rem 2rem 2rem;
  border-top: 4px solid var(--primary);
}

.footer-container {
  max-width: var(--container-width);
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer-title {
  font-family: 'DM Sans', sans-serif;
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--white);
}

.footer-text {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
  font-size: 0.95rem;
}

/* ==================== ANIMATIONS ==================== */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.5;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.3;
  }
}

/* Animation delays for staggered effects */
.product-card:nth-child(1).animate-in { animation-delay: 0.1s; }
.product-card:nth-child(2).animate-in { animation-delay: 0.2s; }
.product-card:nth-child(3).animate-in { animation-delay: 0.3s; }

.feature-card:nth-child(1).animate-in { animation-delay: 0.1s; }
.feature-card:nth-child(2).animate-in { animation-delay: 0.2s; }
.feature-card:nth-child(3).animate-in { animation-delay: 0.3s; }

.team-member:nth-child(1).animate-in { animation-delay: 0.1s; }
.team-member:nth-child(2).animate-in { animation-delay: 0.2s; }
.team-member:nth-child(3).animate-in { animation-delay: 0.3s; }
.team-member:nth-child(4).animate-in { animation-delay: 0.4s; }

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
  :root {
    --section-spacing: 80px;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .hero-visual {
    order: -1;
  }
  
  .hero-image-wrapper {
    transform: perspective(1000px) rotateY(0deg);
  }
}

@media (max-width: 768px) {
  :root {
    --section-spacing: 60px;
  }
  
  .header-wrapper {
    padding: 1rem 1.5rem;
  }
  
  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--white);
    flex-direction: column;
    padding: 6rem 2rem 2rem;
    box-shadow: var(--shadow-xl);
    transition: right 0.3s ease;
    align-items: flex-start;
  }
  
  .main-nav.open {
    right: 0;
  }
  
  .hamburger {
    display: flex;
  }
  
  .hero {
    padding: 4rem 1.5rem 5rem;
  }
  
  .section {
    padding: var(--section-spacing) 1.5rem;
  }
  
  .products-grid,
  .features-grid,
  .team-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-description {
    font-size: 1.125rem;
  }
  
  .section-title {
    font-size: 1.875rem;
  }
}

@media (max-width: 480px) {
  .header-wrapper {
    padding: 1rem;
  }
  
  .brand-title {
    font-size: 1.25rem;
  }
  
  .brand-sub {
    font-size: 0.75rem;
  }
  
  .logo {
    width: 50px;
    height: 50px;
  }
  
  .hero {
    padding: 3rem 1rem 4rem;
  }
  
  .section {
    padding: 48px 1rem;
  }
  
  .btn-primary {
    width: 100%;
    text-align: center;
  }
}