:root {
  /* Palette Premium B2B */
  --color-primary: #1A1A1A;     /* Anthracite */
  --color-secondary: #FFB7C5;   /* Rose Poudré */
  --color-accent: #FF1493;      /* Rose Bonbon */
  --color-bg: #FAF9F6;          /* Blanc cassé / Crème */
  --color-bg-alt: #F2F0EB;      /* Gris clair chaud */
  --color-white: #FFFFFF;
  --color-text-main: #333333;
  --color-text-light: #666666;

  /* Typography */
  --font-title: "novecento-sans-wide", sans-serif;
  --font-body: "proxima-nova", sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-full: 999px;
  --shadow-sm: 0 4px 20px rgba(0,0,0,0.05);
}

/* Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  color: var(--color-text-main);
  line-height: 1.6;
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-title);
  font-weight: 500;
  color: var(--color-primary);
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 2px;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

/* Layout Elements */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-sm);
}

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

/* Header & Nav */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(250, 249, 246, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid rgba(0,0,0,0.05);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-sm);
}

.logo {
  font-family: var(--font-title);
  font-size: 1.2rem;
  letter-spacing: 2px;
  font-weight: 700;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}

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

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-accent);
  transform: translateY(-2px);
}

.btn-secondary {
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* Grids */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

@media (max-width: 768px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

/* Forms */
.form-group {
  margin-bottom: var(--space-sm);
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  font-size: 0.9rem;
}

.form-control {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid #ddd;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.3s;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
}

textarea.form-control {
  min-height: 150px;
  resize: vertical;
}

/* Footer */
footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-lg) 0 var(--space-md);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--space-lg);
  width: 100%;
}

.footer-logo {
  font-family: var(--font-title);
  font-size: 1.2rem;
  margin-bottom: var(--space-sm);
  display: block;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--space-xs);
}

.footer-links a {
  font-size: 0.9rem;
  opacity: 0.8;
}

.footer-links a:hover {
  opacity: 1;
  color: var(--color-secondary);
}

.footer-bottom {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  opacity: 0.6;
}

.footer-credit {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-credit img {
  height: 25px;
  filter: brightness(0) invert(1); /* Logo SevenKeys en blanc */
}

@media (max-width: 768px) {
  .grid-2 {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .nav-container {
    flex-direction: column;
    height: auto;
    padding: var(--space-sm);
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
  }

  .nav-links a {
    font-size: 0.8rem;
  }

  main {
    padding-top: 120px !important;
  }

  /* Hero adjustments for mobile */
  h1 {
    font-size: 2.5rem !important;
    white-space: normal !important;
  }

  .section-padding {
    padding: var(--space-lg) 0;
  }
}

/* Footer Responsive */
@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-md);
    text-align: center;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-sm);
  }
}