/* === Variables globales === */
:root {
  --primary: #2563eb;
  --secondary: #22c55e;
  --accent: #f43f5e;
  --bg-color: #f8fafc;
  --bg-color-dark: #181a1b;
  --text-color: #1e293b;
  --text-color-dark: #f1f5f9;
  --card-bg: #fff;
  --card-bg-dark: #23272f;
  --border-color: #e5e7eb;
  --border-color-dark: #2d3748;
  --shadow-sm: 0 2px 8px rgba(30,41,59,0.06);
  --shadow-lg: 0 8px 32px rgba(37,99,235,0.12);
  --danger: #e53e3e;
  --success: #22c55e;
  --transition: 0.3s cubic-bezier(.4,0,.2,1);
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --border-radius: 1rem;
  --font-main: 'Roboto', Arial, sans-serif;
}
[data-theme="dark"] {
  --bg-color: var(--bg-color-dark);
  --text-color: var(--text-color-dark);
  --card-bg: var(--card-bg-dark);
  --border-color: var(--border-color-dark);
}
html, body {
  background: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-main);
  margin: 0;
  padding: 0;
  min-height: 100vh;
  scroll-behavior: smooth;
  transition: background 0.4s, color 0.4s;
}

/* === Navigation sticky & mobile === */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248,250,252,0.95);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-sm);
  transition: background 0.4s;
}
[data-theme="dark"] .navbar {
  background: rgba(24,26,27,0.95);
}
.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-xs) var(--spacing-md);
}
.logo {
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--primary);
  letter-spacing: 1px;
  text-decoration: none;
  transition: color var(--transition);
}
.nav-links {
  display: flex;
  gap: var(--spacing-sm);
}
.nav-links a {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  transition: background var(--transition), color var(--transition);
}
.nav-links a.active, .nav-links a:hover {
  background: var(--primary);
  color: #fff;
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}
.cv-btn {
  background: var(--secondary);
  color: #fff;
  border: none;
  border-radius: 0.5rem;
  padding: 0.5rem 1rem;
  font-weight: 500;
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.cv-btn:hover {
  background: var(--primary);
  color: #fff;
}
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 2rem;
  color: var(--primary);
  margin-right: 1rem;
  cursor: pointer;
}
@media (max-width: 900px) {
  .nav-links {
    display: none;
  }
  .navbar.open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 60px;
    left: 0;
    width: 100vw;
    background: var(--bg-color);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-md) 0;
    z-index: 200;
  }
  .mobile-menu-btn {
    display: block;
  }
}

/* === Hero, sections, titres === */
.hero {
  min-height: 45vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(120deg, var(--primary) 0%, var(--secondary) 100%);
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero-content {
  z-index: 2;
  position: relative;
}
.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  letter-spacing: 1px;
}
.hero .subtitle {
  font-size: 1.2rem;
  opacity: 0.95;
  margin-bottom: 1.5rem;
}
.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
}
.btn-primary, .btn-secondary {
  padding: 0.7rem 1.5rem;
  border-radius: 0.5rem;
  border: none;
  font-weight: 500;
  font-size: 1rem;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  display: inline-block;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--secondary);
  color: #fff;
}
.btn-secondary {
  background: #fff;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.btn-secondary:hover {
  background: var(--primary);
  color: #fff;
}

section {
  padding: var(--spacing-xl) 0;
}
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}
h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-lg);
  color: var(--primary);
  letter-spacing: 1px;
}

/* === Grilles et cartes === */
.skills-grid, .projects-grid, .soft-skills-grid, .gallery-grid {
  display: grid;
  gap: var(--spacing-lg);
}
.skills-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.projects-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.soft-skills-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.gallery-grid {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
}
@media (max-width: 700px) {
  .skills-grid, .projects-grid, .soft-skills-grid, .gallery-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

.skill-card, .project-card, .soft-skill-card, .home-skill-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
  transition: box-shadow 0.3s, transform 0.3s, border-color 0.3s, background 0.4s;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.skill-card:hover, .project-card:hover, .soft-skill-card:hover, .home-skill-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
  transform: translateY(-4px) scale(1.03);
  background: rgba(37,99,235,0.04);
}
.skill-icon, .project-icon, .home-skill-icon, .soft-skill-card i {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
}
.skill-card h3, .project-card h3, .soft-skill-card h3, .home-skill-title {
  color: var(--text-color);
  margin-bottom: var(--spacing-xs);
  font-size: 1.15rem;
  font-weight: 600;
}
.skill-card p, .project-card p, .soft-skill-card p {
  color: var(--text-color);
  opacity: 0.85;
  line-height: 1.5;
  margin-bottom: var(--spacing-sm);
}
.project-card ul {
  color: var(--text-color);
  opacity: 0.85;
  line-height: 1.6;
  margin: 0.5rem 0;
  padding-left: 1.5rem;
}
.project-card li {
  margin-bottom: 0.4rem;
}
.skill-level {
  width: 100%;
  height: 8px;
  background: var(--border-color);
  border-radius: 4px;
  overflow: hidden;
  margin-top: var(--spacing-xs);
}
.skill-progress {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 4px;
  transition: width 1.2s cubic-bezier(.4,0,.2,1);
}

/* Mini-cartes accueil */
.home-skills-grid {
  display: flex;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-md);
  flex-wrap: wrap;
}
.home-skill-card {
  padding: var(--spacing-md) var(--spacing-xl);
  align-items: center;
  gap: var(--spacing-md);
  cursor: default;
}
@media (max-width: 600px) {
  .home-skills-grid {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  .home-skill-card {
    padding: var(--spacing-md);
    font-size: 1rem;
  }
}

/* === About, contact, infos === */
.about-section .about-grid {
  display: flex;
  gap: var(--spacing-xl);
  align-items: center;
  flex-wrap: wrap;
}
.about-photo img {
  width: 180px;
  height: 180px;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid var(--primary);
  box-shadow: var(--shadow-lg);
}
.about-text {
  flex: 1;
}
.about-infos {
  list-style: none;
  padding: 0;
  margin: var(--spacing-md) 0 0 0;
}
.about-infos li {
  margin-bottom: var(--spacing-xs);
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.about-infos a {
  color: var(--primary);
  text-decoration: underline;
}

/* === Contact === */
.contact-section {
  padding: var(--spacing-xl) 0;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}
.contact-info {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  border: 1px solid var(--border-color);
}
.info-item {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 1.1rem;
  margin-bottom: var(--spacing-xs);
}
.info-item a {
  color: var(--primary);
  text-decoration: underline;
}
.contact-form {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: var(--spacing-sm);
}
.contact-form input, .contact-form textarea {
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 0.7rem 1rem;
  font-size: 1rem;
  font-family: var(--font-main);
  background: var(--card-bg);
  color: var(--text-color);
  transition: border var(--transition), box-shadow var(--transition);
}
.contact-form input:focus, .contact-form textarea:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 2px var(--primary)33;
}
.form-feedback {
  margin-top: 0.5rem;
  font-size: 1rem;
  min-height: 1.2em;
}
@media (max-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

/* === Galerie interactive === */
.gallery-grid img {
  width: 100%;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s, box-shadow 0.3s;
  cursor: pointer;
}
.gallery-grid img:hover {
  transform: scale(1.04) rotate(-1deg);
  box-shadow: var(--shadow-lg);
}
.gallery-modal {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(30,41,59,0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}
.gallery-modal-content {
  background: var(--card-bg);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.gallery-modal-content img {
  max-width: 80vw;
  max-height: 70vh;
  border-radius: var(--border-radius);
}
.gallery-modal-close {
  position: absolute;
  top: 10px;
  right: 20px;
  font-size: 2rem;
  color: var(--accent);
  cursor: pointer;
  font-weight: bold;
}

/* === Footer === */
footer {
  background: var(--card-bg);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-lg) 0 0 0;
  margin-top: var(--spacing-xl);
  color: var(--text-color);
}
.footer-content {
  display: flex;
  gap: var(--spacing-xl);
  justify-content: space-between;
  flex-wrap: wrap;
}
.footer-section {
  min-width: 180px;
  margin-bottom: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer-section h3 {
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 0.5rem;
}
.footer-section a {
  color: var(--text-color);
  text-decoration: none;
  transition: color var(--transition);
  font-size: 1rem;
}
.footer-section a:hover {
  color: var(--primary);
  text-decoration: underline;
}
.footer-bottom {
  text-align: center;
  padding: var(--spacing-md) 0 var(--spacing-xs) 0;
  font-size: 1rem;
  color: #64748b;
}

/* === Animations, transitions, accessibilité === */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(.4,0,.2,1), transform 0.7s cubic-bezier(.4,0,.2,1);
}
.animate-on-scroll.visible {
  opacity: 1;
  transform: none;
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.user-is-tabbing button, .user-is-tabbing a, .user-is-tabbing input, .user-is-tabbing textarea {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* === Divers, responsive général === */
@media (max-width: 700px) {
  .about-section .about-grid, .footer-content {
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: flex-start;
  }
  .about-photo img {
    width: 120px;
    height: 120px;
  }
  h2 {
    font-size: 1.3rem;
  }
  .footer-section {
    min-width: 120px;
  }
}