/* -------------------------------------
   RESET & VARIABLES
------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --bg-color: #f9fafb;
  --text-color: #222222;
  --accent-color: #6366f1;
  --accent-hover: #4f46e5;
  --white: #ffffff;
  --card-bg: rgba(255 255 255 / 0.9);
  --card-shadow: rgba(99, 102, 241, 0.2);
  --border-radius: 16px;
  --font-main: "Poppins", sans-serif;
  --transition: 0.3s ease;
  --max-width: 1100px;
}

body.dark-mode {
  --bg-color: #121212;
  --text-color: #e0e0e0;
  --accent-color: #8b5cf6;
  --accent-hover: #7c3aed;
  --white: #1e1e1e;
  --card-bg: rgba(30 30 30 / 0.85);
  --card-shadow: rgba(139, 92, 246, 0.3);
}

/* -------------------------------------
   GLOBAL
------------------------------------- */
body {
  margin: 0;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-main);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 0 1rem 0; /* +1rem vertical padding */
}

section {
  scroll-margin-top: 80px;
  margin-bottom: 4rem; /* espacement plus large entre sections */
}

/* -------------------------------------
   HEADER
------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255 255 255 / 0.75);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  box-shadow: 0 2px 10px rgba(0 0 0 / 0.07);
  color: var(--accent-color);
  padding: 1.25rem 1.5rem;
  z-index: 1000;
  transition: padding 0.3s ease;
}

body.dark-mode .site-header {
  background: rgba(30 30 30 / 0.85);
}

.site-header h1 {
  font-weight: 700;
  font-size: 2rem;
  margin: 0;
  line-height: 1.2;
}

.site-header p {
  font-weight: 500;
  font-size: 1rem;
  /* margin: 0.25rem 0 1rem; */
  color: var(--text-color);
}

/* -------------------------------------
   NAVBAR
------------------------------------- */
.navbar ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem; /* un peu plus d’espace entre les liens */
  padding: 0;
  margin: 0 !important;
  padding: 0 !important;
}

#toggle-dark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  line-height: 1;
  padding: 0.20rem 0.75rem 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.navbar a,
.navbar button {
  font-weight: 600;
  color: var(--accent-color);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: none;
  font-size: 1.1rem;
  transition: color var(--transition), transform var(--transition);
  padding: 0.35rem 0.75rem; /* padding un peu plus grand */
  border-radius: 8px;
  position: relative;
  overflow: hidden;
}

.navbar a::after,
.navbar button::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-hover);
  transition: width 0.3s ease, left 0.3s ease;
  border-radius: 2px;
}

.navbar a:hover::after,
.navbar button:hover::after,
.navbar a:focus::after,
.navbar button:focus::after {
  width: 100%;
  left: 0;
}

.navbar a:hover,
.navbar button:hover,
.navbar a:focus,
.navbar button:focus {
  color: var(--accent-hover);
  outline: none;
}

/* -------------------------------------
   MENU BURGER
------------------------------------- */
.burger {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  z-index: 1100;
}

.burger span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--accent-color);
  transition: var(--transition);
  border-radius: 2px;
}

/* Animation croix */
.burger.active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}
.burger.active span:nth-child(2) {
  opacity: 0;
}
.burger.active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* -------------------------------------
   TITRES
------------------------------------- */
h2 {
  font-weight: 700;
  font-size: 2.25rem;
  margin-bottom: 2.5rem; /* plus d’espace en dessous */
  text-align: center;
  color: var(--accent-color);
  position: relative;
}

h2::after {
  content: "";
  display: block;
  width: 80px;
  height: 4px;
  background-color: var(--accent-color);
  border-radius: 3px;
  margin: 0.5rem auto 1.5rem; /* espace plus large sous la ligne */
}

/* -------------------------------------
   PROJETS
------------------------------------- */

/* On rend la carte entière cliquable via ce wrapper <a> */
.projet-link {
  display: block;
  text-decoration: none;
  color: inherit;
  margin-bottom: 3rem; /* espace plus grand entre projets */
}

/* Style de la carte projet */
.projet-link .projet {
  background-color: var(--card-bg);
  box-shadow: 0 12px 24px var(--card-shadow);
  border-radius: var(--border-radius);
  padding: 2.5rem; /* un peu plus de padding */
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  cursor: pointer;
  user-select: none;
}

/* Hover animation sur toute la carte */
.projet-link:hover .projet {
  transform: translateY(-8px);
  box-shadow: 0 20px 32px var(--card-shadow);
}

/* Curseur pointer uniquement sur le titre pour guider l'utilisateur */
.projet-link h3 {
  cursor: default;
  user-select: text;
}

.projet-link h3:hover {
  cursor: pointer;
}

/* Titre projets */
.projet h3 {
  font-weight: 700;
  font-size: 1.6rem; /* légèrement plus gros */
  color: var(--accent-color);
  margin-top: 0;
  margin-bottom: 1.25rem; /* plus d’espace */
  user-select: text;
  line-height: 1.3;
}

/* Tags */
.tag {
  display: inline-block;
  background-color: var(--accent-color);
  color: var(--white);
  font-size: 0.8rem; /* un peu plus gros */
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 12px;
  margin-left: 0.6rem;
  vertical-align: middle;
  user-select: none;
  transition: background-color 0.3s ease;
}

.projet-link:hover .tag {
  background-color: var(--accent-hover);
}

/* Paragraphe projet */
.projet p {
  color: var(--text-color);
  line-height: 1.7;
  user-select: text;
  margin: 0;
}

/* -------------------------------------
   SECTION CV
------------------------------------- */
#cv {
  text-align: center;
  margin: 3rem 0 4rem 0; /* plus d’espace au-dessus et en-dessous */
}

#cv .btn {
  font-weight: 600;
  font-size: 1.2rem; /* légèrement plus gros */
}

#cv p a {
  text-decoration: none;
}

/* -------------------------------------
   CONTACT FORM
------------------------------------- */
#contactform {
  max-width: 600px;
  margin: 4rem auto 6rem; /* plus de marge verticales */
}

.contact-form {
  background-color: var(--card-bg);
  padding: 2.5rem;
  border-radius: var(--border-radius);
  box-shadow: 0 12px 24px var(--card-shadow);
  color: var(--text-color);
  transition: box-shadow 0.3s ease;
}

.contact-form:hover,
.contact-form:focus-within {
  box-shadow: 0 20px 32px var(--card-shadow);
}

.contact-form label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.9rem 1.2rem;
  margin-bottom: 1.5rem;
  border: 1.5px solid #ddd;
  border-radius: 10px;
  font-size: 1.05rem;
  font-family: var(--font-main);
  background-color: #fefefe;
  color: var(--text-color);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

body.dark-mode .contact-form input,
body.dark-mode .contact-form textarea {
  background-color: #222;
  border-color: #444;
  color: var(--text-color);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 8px var(--accent-color);
}

textarea {
  resize: none;
}

/* -------------------------------------
   BOUTONS
------------------------------------- */
.btn {
  display: inline-block;
  background-color: var(--accent-color);
  color: var(--white);
  padding: 0.85rem 1.8rem; /* plus grand padding */
  font-weight: 700;
  font-size: 1.1rem;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, transform 0.2s ease;
  text-align: center;
  white-space: nowrap;
  margin-bottom: 2rem; /* espace sous les boutons */
}

.btn:hover,
.btn:focus {
  background-color: var(--accent-hover);
  transform: scale(1.05);
  outline: none;
}

/* Bouton fuyant */
#tricky-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
  padding: 12px 20px;
  border: none;
  border-radius: 8px;
  background-color: var(--accent-color);
  color: white;
  font-size: 16px;
  font-family: inherit;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  width: max-content;
  height: max-content;
  transition: background-color 0.3s ease;
}

#tricky-btn:hover {
  background-color: var(--accent-hover);
}

/* -------------------------------------
   FOOTER
------------------------------------- */
footer {
  text-align: center;
  padding: 3rem 1.5rem; /* plus grand padding vertical */
  background-color: var(--accent-color);
  color: var(--white);
}

/* -------------------------------------
   ANIMATIONS
------------------------------------- */
.pulse {
  animation: pulse 1s ease;
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.03);
  }
  100% {
    transform: scale(1);
  }
}

.hidden {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1s ease, transform 1s ease;
}

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

.collapse-page * {
  transition: all 1s ease;
  opacity: 0;
  transform: scale(0);
  pointer-events: none;
}

.collapse-page {
  background-color: black !important;
  transition: background-color 2s ease;
}

/* -------------------------------------
   RESPONSIVE
------------------------------------- */
@media (max-width: 768px) {
  .container {
    padding: 0.2rem 0.75rem;
  }

  .site-header {
    padding: 0.2rem 1rem;
  }

  .site-header h1 {
    font-size: 1.5rem;
    text-align: center;
  }

  .site-header p {
    font-size: 0.95rem;
    text-align: center;
  }

  .burger {
    display: flex;
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1100;
  }

  .burger span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--accent-color);
    border-radius: 2px;
    transition: background-color 0.3s ease;
  }

  body.dark-mode .burger span {
    background-color: var(--accent-hover);
  }

  .navbar {
    position: absolute;
    top: 100%;
    right: 0;
    width: 100%;
    background: var(--white);
    flex-direction: column;
    gap: 1.25rem;
    padding: 1rem 2rem;
    box-shadow: 0 4px 20px rgba(0 0 0 / 0.1);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 1000;
  }

  body.dark-mode .navbar {
    background: #1e1e1e;
  }

  .navbar.active {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
    background: rgba(255 255 255 / 0.75);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    box-shadow: 0 2px 10px rgba(0 0 0 / 0.07);
  }

  .navbar ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .navbar a,
  .navbar button {
    font-size: 1rem;
    padding: 0.5rem 0;
  }

  h2 {
    font-size: 1.75rem;
  }

  .projet {
    padding: 1.5rem;
  }

  #contactform {
    margin: 2rem 1rem 4rem;
  }

  .contact-form {
    padding: 1.5rem;
  }

  #tricky-btn {
    display: none;
  }
}

@media (max-width: 400px) {
  .btn {
    padding: 0.6rem 1rem;
    font-size: 0.9rem;
  }

  #tricky-btn {
    font-size: 12px;
  }
}

#profil {
  text-align: center;
  margin: 3rem 0 4rem;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
}

.btn-group .btn {
  min-width: 160px;
  text-decoration: none;
  align-items: center;
  display: inline-flex;
  justify-content: center;
  gap: 0.5rem;
}

/* Icônes dans les boutons */
.btn svg {
  vertical-align: middle;
}

.voir-projet {
  display: inline-block;
  margin-top: 1.5rem;
  font-weight: 600;
  color: var(--accent-color);
  font-size: 1rem;
  transition: color 0.3s ease;
}

.projet-link:hover .voir-projet {
  color: var(--accent-hover);
  text-decoration: underline;
}