:root {
  /* Couleurs */
  --color-primary: #099b6a;
  --color-secondary: #068a5a;
  --color-light: #e6f7f1;
  --color-dark: #024623;
  --color-text: #10b981;
  --color-white: #ffffff;
  --color-gray: #848383;

  /* Bordures / Rayons */
  --radius-rounded: 1rem;
  --radius-full: 9999px;
  --border-width: 4px;

  /* Transitions */
  --transition-fast: 0.3s;

  /* Ombrages */
  --shadow-light: 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-card: 0 4px 10px rgba(0, 0, 0, 0.1);
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-dark);
  color: var(--color-text);
}

a {
  display: inline-block;
  text-decoration: none;
}

.text-primary {
  color: var(--color-primary);
}
.text-secondary {
  color: var(--color-secondary);
}

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

.bg-secondary {
  background-color: var(--color-secondary);
  color: var(--color-white);
}

.bg-light {
  background-color: var(--color-light);
}

.hover-scale:hover {
  transform: scale(1.1);
}

.transition-scale {
  transition: transform var(--transition-fast);
}

.transition-all {
  transition: all var(--transition-fast);
}

.invisible {
  display: none;
}

.subChoice {
  opacity: 0;
  transition: all 0.5s ease;
}

.appear {
  opacity: 1;
}

/* Soft pulse animation */
.soft-pulse {
  animation: softPulse 1.8s ease-in-out infinite;
}

@keyframes softPulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.85;
  }
}

/* Header and nav */
header {
  /* backdrop-blur: blur(10px); */
  background-color: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-light);
  z-index: 50;
}
#mobileMenu {
  background-color: rgba(255, 255, 255, 0.9);
}
nav ul li a {
  transition: color var(--transition-fast);
}

nav ul li a:hover {
  color: var(--color-secondary);
}

/* Project card */
.project-card {
  background: var(--color-white);
  padding: 2rem;
  border-radius: 2rem;
  box-shadow: var(--shadow-card);
  border-left: var(--border-width) solid var(--color-primary);
  transition: transform var(--transition-fast);
}

.project-card:hover {
  transform: translateY(-0.25rem);
}

.project-title {
  color: var(--color-primary);
}

/* Buttons */
.btn-primary {
  color: var(--color-secondary);
  background-color: var(--color-light);
  padding: 0.75rem 2.5rem;
  border-radius: var(--radius-full);
  font-weight: bold;
  display: inline-block;
  transition: transform var(--transition-fast);
}

.btn-primary:hover {
  transform: scale(1.1);
}

.btn-submit {
  background-color: var(--color-primary);
  border: 2px solid var(--color-secondary);
  color: var(--color-white);
  font-weight: bold;
  border-radius: var(--radius-rounded);
  padding: 1rem;
  transition: all var(--transition-fast);
}

.btn-submit:hover {
  background-color: var(--color-secondary);
  transform: scale(1.05);
}

/* Form inputs */
input,
textarea {
  padding: 0.75rem;
  border-radius: var(--radius-rounded);
  border: 1px solid var(--color-gray);
  outline: none;
}

input:focus,
textarea:focus {
  box-shadow: 0 0 0 2px var(--color-primary);
}