/* ==========================================================================
   Portfolio — Jocelyn Fontaine (Galiceau)
   styles/main.css — Variables CSS, reset et styles de base
   ========================================================================== */

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Couleurs principales */
  --color-navy: #0a0a1e;
  --color-purple: #1e0a1e;
  --color-bordeaux: #6b1d2a;
  --color-white: #ffffff;
  --color-light-gray: #f5f5f5;

  /* Couleurs dérivées */
  --color-text-on-dark: #f0f0f0;
  --color-text-on-light: #1a1a2e;
  --color-accent: #9b3a4a;

  /* Typographie */
  --font-primary: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-heading: 'Space Grotesk', 'Inter', sans-serif;

  /* Espacement */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  /* Largeur max du contenu */
  --content-max-width: 1200px;
  --content-padding: var(--spacing-md);
}

/* ---------- CSS Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

/* ---------- Global Styles ---------- */
body {
  font-family: var(--font-primary);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-on-light);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

h1 { font-size: 3rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.25rem; }

p {
  margin-bottom: var(--spacing-sm);
}

/* ---------- Links ---------- */
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* Focus visible for keyboard navigation — 4.5:1+ contrast */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-bordeaux);
  outline-offset: 2px;
}

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

/* ---------- Lists ---------- */
ul, ol {
  list-style: none;
}

/* ---------- Buttons ---------- */
button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ---------- Layout — White margins framing the central content zone ---------- */
main {
  max-width: var(--content-max-width);
  margin: 0 auto;
}

/* Dark central content zone (Zone_Contenu_Centrale) */
main > section {
  background-color: var(--color-navy);
  color: var(--color-text-on-dark);
  padding: var(--spacing-lg) var(--content-padding);
}

/* Alternate subtle variation for visual rhythm */
main > section:nth-child(even) {
  background-color: var(--color-purple);
}

/* Section headings inside dark zone — white text, high contrast */
main > section h2 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

/* ---------- Header ---------- */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-navy);
  color: var(--color-white);
}

/* ---------- Footer ---------- */
footer {
  background-color: var(--color-navy);
  color: var(--color-text-on-dark);
  text-align: center;
  padding: var(--spacing-md) var(--content-padding);
  font-size: 0.875rem;
}

/* ---------- Selection ---------- */
::selection {
  background-color: var(--color-bordeaux);
  color: var(--color-white);
}

/* ---------- Scrollbar (subtle, optional) ---------- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-light-gray);
}

::-webkit-scrollbar-thumb {
  background: var(--color-navy);
  border-radius: 4px;
}

/* ==========================================================================
   2.2 — Navigation, Sections & Components
   ========================================================================== */

/* ---------- Navigation ---------- */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--content-padding);
  max-width: var(--content-max-width);
  margin: 0 auto;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
}

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

.nav-links {
  display: flex;
  gap: var(--spacing-md);
}

.nav-links a {
  color: var(--color-text-on-dark);
  font-size: 0.9375rem;
  font-weight: 500;
  padding: var(--spacing-xs) 0;
  position: relative;
  transition: color 0.2s ease;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-bordeaux);
  transition: width 0.25s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-white);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Language switch */
.lang-switch a {
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--color-bordeaux);
  border-radius: 4px;
  font-size: 0.8125rem;
  transition: background-color 0.2s ease;
}

.lang-switch a:hover {
  background-color: var(--color-bordeaux);
  color: var(--color-white);
}

/* Hamburger — hidden by default, visible < 768px (task 2.3 media queries) */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-xs);
  background: none;
  border: none;
  cursor: pointer;
}

.hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ---------- Section Hero ---------- */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.hero-avatar {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  border: 3px solid var(--color-bordeaux);
  object-fit: cover;
  margin-bottom: var(--spacing-sm);
}

#hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  color: var(--color-white);
}

.hero-pseudo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  margin-bottom: 0;
}

.hero-title {
  font-size: 1.125rem;
  color: var(--color-text-on-dark);
  margin-bottom: 0;
}

.hero-badge {
  display: inline-block;
  padding: 0.3rem 1rem;
  background-color: rgba(107, 29, 42, 0.3);
  border: 1px solid var(--color-bordeaux);
  border-radius: 999px;
  font-size: 0.875rem;
  color: var(--color-white);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.hero-motto {
  font-style: italic;
  color: var(--color-text-on-dark);
  opacity: 0.8;
  margin-bottom: var(--spacing-sm);
}

.hero-links {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  justify-content: center;
}

.hero-links a {
  display: inline-block;
  padding: 0.625rem 1.5rem;
  border: 1px solid var(--color-bordeaux);
  border-radius: 4px;
  color: var(--color-white);
  font-weight: 500;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.hero-links a:hover {
  background-color: var(--color-bordeaux);
  color: var(--color-white);
}

/* ---------- Section Compétences — Skills Grid ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--spacing-md);
}

.skill-category h3 {
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-xs);
  border-bottom: 2px solid var(--color-bordeaux);
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.skill-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background-color: rgba(107, 29, 42, 0.25);
  border: 1px solid var(--color-bordeaux);
  border-radius: 999px;
  font-size: 0.8125rem;
  color: var(--color-text-on-dark);
  transition: background-color 0.2s ease;
}

.skill-badge:hover {
  background-color: rgba(107, 29, 42, 0.5);
}

/* ---------- Section Projets — Projects Grid ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-md);
}

/* ---------- Section Blog — Blog Grid ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-md);
}

/* ---------- Project & Article Cards (shared base) ---------- */
.project-card,
.article-card {
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: var(--spacing-md);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.project-card:hover,
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.project-card h3,
.article-card h3 {
  color: var(--color-white);
  margin-bottom: var(--spacing-xs);
}

.project-card p,
.article-card p {
  color: var(--color-text-on-dark);
  font-size: 0.9375rem;
}

.project-card a,
.article-card a {
  color: var(--color-accent);
  font-weight: 500;
}

.project-card a:hover,
.article-card a:hover {
  color: var(--color-white);
}

/* ---------- Loading Placeholder ---------- */
.loading-placeholder {
  text-align: center;
  padding: var(--spacing-lg) 0;
  color: var(--color-text-on-dark);
  opacity: 0.6;
}

.loading-placeholder p {
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* ---------- Section Contact ---------- */
.contact-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  text-align: center;
}

.contact-links {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  justify-content: center;
}

.contact-links a {
  display: inline-block;
  padding: 0.625rem 1.5rem;
  border: 1px solid var(--color-bordeaux);
  border-radius: 4px;
  color: var(--color-white);
  font-weight: 500;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.contact-links a:hover {
  background-color: var(--color-bordeaux);
  color: var(--color-white);
}

.contact-location {
  color: var(--color-text-on-dark);
  font-size: 1rem;
  opacity: 0.85;
}

/* ---------- Footer (extended) ---------- */
footer {
  max-width: var(--content-max-width);
  margin: 0 auto;
}

/* ==========================================================================
   2.3 — Responsive Media Queries
   Exigences : 3.4, 9.1, 9.5
   ========================================================================== */

/* ---------- Focus-visible for all interactive elements ---------- */
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-bordeaux);
  outline-offset: 2px;
}

/* ---------- Mobile — max-width: 767px ---------- */
@media (max-width: 767px) {
  /* Navigation — hamburger visible, links become vertical dropdown */
  .hamburger {
    display: flex;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-navy);
    padding: var(--spacing-sm) var(--content-padding);
    gap: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li a {
    display: block;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  nav {
    position: relative;
  }

  /* Typography — reduced sizes */
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  #hero h1 {
    font-size: clamp(1.75rem, 8vw, 2.5rem);
  }

  /* Hero — reduced height */
  #hero {
    min-height: 80vh;
  }

  /* Sections — reduced padding */
  main > section {
    padding: var(--spacing-md) var(--spacing-sm);
  }

  /* Grids — single column */
  .skills-grid,
  .projects-grid,
  .blog-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Tablet — 768px to 1024px ---------- */
@media (min-width: 768px) and (max-width: 1024px) {
  /* Grids — 2 columns */
  .skills-grid,
  .projects-grid,
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Adjust section padding */
  main > section {
    padding: var(--spacing-md) var(--content-padding);
  }
}

/* ---------- Desktop — above 1024px ---------- */
@media (min-width: 1025px) {
  /* Grids — cap at 3 columns */
  .skills-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  }

  .projects-grid,
  .blog-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ==========================================================================
   9.1 — Dynamic Card Styles (generated by JS modules)
   ========================================================================== */

/* ---------- Project Card — Topic Badges ---------- */
.project-topics {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin: var(--spacing-sm) 0;
}

.topic-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background-color: rgba(107, 29, 42, 0.2);
  border: 1px solid rgba(107, 29, 42, 0.4);
  border-radius: 999px;
  font-size: 0.75rem;
  color: var(--color-accent);
}

/* ---------- Project Card — Meta (language + stars) ---------- */
.project-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin: var(--spacing-sm) 0;
  font-size: 0.8125rem;
  color: var(--color-text-on-dark);
  opacity: 0.75;
}

.project-language {
  font-weight: 500;
}

.project-stars {
  font-size: 0.8125rem;
}

/* ---------- Project & Article Links ---------- */
.project-link,
.article-link {
  display: inline-block;
  margin-top: var(--spacing-xs);
  padding: 0.4rem 1rem;
  border: 1px solid var(--color-bordeaux);
  border-radius: 4px;
  color: var(--color-white);
  font-size: 0.875rem;
  font-weight: 500;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.project-link:hover,
.article-link:hover {
  background-color: var(--color-bordeaux);
  color: var(--color-white);
}

/* ---------- Article Card — Thumbnail ---------- */
.article-thumbnail {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 4px 4px 0 0;
  margin: calc(-1 * var(--spacing-md));
  margin-bottom: var(--spacing-sm);
  width: calc(100% + 2 * var(--spacing-md));
}

/* ---------- Article Card — Date & Excerpt ---------- */
.article-date {
  font-size: 0.8125rem;
  color: var(--color-text-on-dark);
  opacity: 0.65;
  margin-bottom: var(--spacing-xs);
}

.article-excerpt {
  font-size: 0.9375rem;
  color: var(--color-text-on-dark);
  opacity: 0.85;
  margin-bottom: var(--spacing-sm);
}

/* ---------- Status Messages (empty, error, fallback) ---------- */
.empty-message,
.error-message,
.fallback-message {
  text-align: center;
  padding: var(--spacing-md);
  color: var(--color-text-on-dark);
  opacity: 0.7;
  font-size: 0.9375rem;
  grid-column: 1 / -1;
}

.fallback-message a {
  color: var(--color-accent);
  text-decoration: underline;
  font-weight: 500;
}

.fallback-message a:hover {
  color: var(--color-white);
}