/* ================================================================
   style.css — Feuille de styles du portfolio Nolan Massot
   ----------------------------------------------------------------
   Organisation :
     1. Design system (variables CSS)
     2. Reset & base
     3. Utilitaires layout
     4. Composants réutilisables (boutons, badges, cartes)
     5. Navigation
     6. Sections : Hero, About, Skills, Experience, Projects,
                   Veille, Contact
     7. Footer
     8. Animations & utilitaires visuels
     9. Responsive (mobile-first via min-width)
    10. Print
   ================================================================ */


/* ================================================================
   1. DESIGN SYSTEM — VARIABLES
   ================================================================ */
:root {
  /* Couleurs — fond */
  --color-bg-0:        #0a0a0f;   /* fond principal */
  --color-bg-1:        #111118;   /* cartes */
  --color-bg-2:        #18181f;   /* éléments surélevés */

  /* Couleurs — bordures */
  --color-border:      #2a2a38;

  /* Couleurs — accent cyan */
  --color-accent:      #00d4ff;
  --color-accent-dim:  #0099bb;
  --color-accent-glow: rgba(0, 212, 255, 0.18);

  /* Couleurs — secondaire vert (skills) */
  --color-green:       #00e5a0;

  /* Couleurs — texte */
  --color-text-1:      #f0f0f5;
  --color-text-2:      #9090a8;
  --color-text-3:      #5a5a70;

  /* Rayon de bordure */
  --radius-sm:         6px;
  --radius-md:         12px;
  --radius-lg:         20px;

  /* Typographie */
  --font-mono:         'IBM Plex Mono', monospace;
  --font-body:         'DM Sans', sans-serif;

  /* Mise en page */
  --nav-height:        64px;
  --container-max:     1100px;
  --container-pad:     1.5rem;

  /* Transition standard */
  --transition:        0.22s cubic-bezier(0.4, 0, 0.2, 1);
}


/* ================================================================
   2. RESET & BASE
   ================================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--color-bg-0);
  color: var(--color-text-1);
  font-family: var(--font-body);
  line-height: 1.65;
  overflow-x: hidden;
}

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -48px;
  z-index: 2000;
  background: var(--color-bg-2);
  color: var(--color-text-1);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.7rem;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  transition: top var(--transition);
}

.skip-link:focus-visible {
  top: 0.75rem;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--color-accent-dim);
}
a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 3px;
}

ul {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: var(--font-body);
}

h1, h2, h3, h4 {
  line-height: 1.2;
  font-weight: 700;
}

p {
  color: var(--color-text-2);
}


/* ================================================================
   3. UTILITAIRES LAYOUT
   ================================================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.section {
  padding: 6rem 0;
}

.section--alt {
  background-color: var(--color-bg-1);
}

/* En-tête de section : tag + titre + sous-titre */
.section__header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section__tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.section__title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  color: var(--color-text-1);
}

.section__subtitle {
  color: var(--color-text-2);
  margin-top: 0.5rem;
  font-size: 1.05rem;
}


/* ================================================================
   4. COMPOSANTS RÉUTILISABLES
   ================================================================ */

/* --- Boutons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-accent);
  color: #000;
}
.btn--primary:hover {
  background-color: #00eeff;
  color: #000;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.3);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-1);
  border: 1px solid var(--color-border);
}
.btn--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}

.btn--compact {
  font-size: 0.78rem;
  padding: 0.4rem 0.9rem;
}

.btn--block-center {
  width: 100%;
  justify-content: center;
}

.section-cta-center {
  text-align: center;
  margin-top: 2.5rem;
}

/* --- Badges --- */
.badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background-color: var(--color-bg-2);
  border: 1px solid var(--color-border);
  color: var(--color-text-2);
}

.badge--accent {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: var(--color-accent-glow);
}

/* --- Tags stack projet --- */
.stack-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-green);
  background-color: rgba(0, 229, 160, 0.08);
  border: 1px solid rgba(0, 229, 160, 0.25);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}

/* --- Tags tâches expérience --- */
.task-tag {
  font-size: 0.75rem;
  color: var(--color-text-2);
  background-color: var(--color-bg-2);
  border: 1px solid var(--color-border);
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-family: var(--font-mono);
}

/* --- Info card (profil) --- */
.info-card {
  background-color: var(--color-bg-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.info-card__icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background-color: var(--color-accent-glow);
  border: 1px solid var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--color-accent);
}

.info-card__label {
  font-size: 0.78rem;
  color: var(--color-text-3);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.info-card__value {
  font-size: 0.95rem;
  color: var(--color-text-1);
  font-weight: 500;
  margin-top: 0.15rem;
}


/* ================================================================
   5. NAVIGATION
   ================================================================ */
#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background-color: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
}

.nav__inner {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

/* Logo */
.nav__logo {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-text-1);
  font-weight: 600;
  white-space: nowrap;
}
.nav__logo span {
  color: var(--color-accent);
}

/* Liens de navigation */
.nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.nav__links .nav-link {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-2);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background-color var(--transition);
  white-space: nowrap;
}
.nav__links .nav-link:hover,
.nav__links .nav-link.active {
  color: var(--color-text-1);
  background-color: var(--color-bg-2);
}

/* Sélecteur de langue */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  border-left: 1px solid var(--color-border);
  padding-left: 0.75rem;
  margin-left: 0.5rem;
}

.lang-btn {
  background: none;
  border: 1px solid transparent;
  color: var(--color-text-3);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 600;
  padding: 0.25rem 0.45rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.lang-btn:hover {
  color: var(--color-text-1);
  border-color: var(--color-border);
}
.lang-btn.active {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background-color: var(--color-accent-glow);
}

/* Hamburger mobile */
.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 0.5rem;
}

.nav__burger span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text-1);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav__burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav__burger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}


/* ================================================================
   6A. SECTION — HERO
   ================================================================ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-height) + 3rem) 0 4rem;
  position: relative;
  overflow: hidden;
}

/* Grille décorative en fond */
#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.25;
  pointer-events: none;
}

/* Lueur radiale centrale */
#hero::after {
  content: '';
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(0, 212, 255, 0.07) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  align-items: center;
}

.hero__tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.hero__tag::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 1px;
  background-color: var(--color-accent);
}

.hero__name {
  font-size: clamp(2.6rem, 7vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-text-1);
  margin-bottom: 0.5rem;
}

.hero__role {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  color: var(--color-text-2);
  font-weight: 300;
  margin-bottom: 2rem;
}
.hero__role strong {
  color: var(--color-accent);
  font-weight: 600;
}

.hero__desc {
  color: var(--color-text-2);
  max-width: 520px;
  margin-bottom: 2.5rem;
  font-size: 1.02rem;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Photo de profil */
.hero__photo-wrap {
  position: relative;
  flex-shrink: 0;
}
.hero__photo-wrap::before {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: calc(var(--radius-lg) + 6px);
  border: 1px solid var(--color-accent);
  opacity: 0.3;
}

.hero__photo {
  width: 220px;
  height: 220px;
  border-radius: var(--radius-lg);
  object-fit: cover;
  border: 2px solid var(--color-border);
  box-shadow: 0 0 40px rgba(0, 212, 255, 0.1);
}


/* ================================================================
   6B. SECTION — ABOUT / PROFIL
   ================================================================ */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about__text {
  color: var(--color-text-2);
  font-size: 1.02rem;
}
.about__text p + p {
  margin-top: 1rem;
}

.about__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.about__info-cards {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}


/* ================================================================
   6C. SECTION — SKILLS / COMPÉTENCES
   ================================================================ */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.skill-group {
  background-color: var(--color-bg-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
}

.skill-group__title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.skill-group__title::after {
  content: '';
  flex: 1;
  height: 1px;
  background-color: var(--color-border);
}

.skill-item {
  margin-bottom: 1.1rem;
}
.skill-item:last-child {
  margin-bottom: 0;
}

.skill-item__header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.4rem;
}

.skill-item__name {
  font-size: 0.88rem;
  color: var(--color-text-1);
  font-weight: 500;
}

.skill-item__pct {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent);
}

.skill-bar {
  height: 4px;
  background-color: var(--color-bg-2);
  border-radius: 999px;
  overflow: hidden;
}

.skill-bar__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-green));
  border-radius: 999px;
  width: 0; /* Animé via JS au scroll */
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}


/* ================================================================
   6D. SECTION — EXPERIENCE / TIMELINE
   ================================================================ */
.timeline {
  position: relative;
  padding-left: 2rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 0;
  bottom: 0;
  width: 1px;
  background-color: var(--color-border);
}

.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
}
.timeline-item:last-child {
  margin-bottom: 0;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 1.5rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--color-accent);
  box-shadow: 0 0 10px var(--color-accent);
  border: 2px solid var(--color-bg-0);
}

.timeline-card {
  background-color: var(--color-bg-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.75rem;
  transition: border-color var(--transition), transform var(--transition);
}
.timeline-card:hover {
  border-color: var(--color-accent);
  transform: translateX(4px);
}

.timeline-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.timeline-card__company {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-1);
}

.timeline-card__period {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-accent);
  background-color: var(--color-accent-glow);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--color-accent);
  white-space: nowrap;
}

.timeline-card__desc {
  color: var(--color-text-2);
  font-size: 0.9rem;
  margin-top: 0.25rem;
}

.timeline-card__tasks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.75rem;
}

.timeline-card__report {
  margin-top: 1rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}


/* ================================================================
   6E. SECTION — PROJETS
   ================================================================ */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background-color: var(--color-bg-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.project-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}

.project-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--color-accent-glow);
  border: 1px solid var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.project-card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-1);
  margin-bottom: 0.4rem;
}

.project-card__desc {
  color: var(--color-text-2);
  font-size: 0.88rem;
  flex: 1;
  margin-bottom: 1rem;
}

.project-card__stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.project-card__links {
  margin-top: 1rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}


/* ================================================================
   6F. SECTION — VEILLE TECHNOLOGIQUE
   ================================================================ */
.veille__intro {
  color: var(--color-text-2);
  margin-bottom: 2rem;
  max-width: 620px;
}

.veille__embed-wrap {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-1);
}
.veille__embed-wrap iframe {
  width: 100%;
  min-height: 360px;
  border: none;
  display: block;
}


/* ================================================================
   6G. SECTION — CONTACT
   ================================================================ */
.contact__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.contact-card {
  background-color: var(--color-bg-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: border-color var(--transition), transform var(--transition);
}
.contact-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
}

.contact-card__icon {
  font-size: 1.6rem;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.contact-card__label {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-3);
  margin-bottom: 0.4rem;
}

.contact-card__value {
  font-size: 0.9rem;
  color: var(--color-text-1);
  word-break: break-all;
}

/* Liens sociaux */
.socials {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-2);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.6rem 1.1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.social-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background-color: var(--color-accent-glow);
  transform: translateY(-2px);
}


/* ================================================================
   7. FOOTER
   ================================================================ */
footer {
  background-color: var(--color-bg-1);
  border-top: 1px solid var(--color-border);
  padding: 2rem 1.5rem;
  text-align: center;
}

.footer__copy {
  font-size: 0.82rem;
  color: var(--color-text-3);
}

.footer__mono {
  font-family: var(--font-mono);
}


/* ================================================================
   8. ANIMATIONS & UTILITAIRES VISUELS
   ================================================================ */

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* Scrollbar personnalisée */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background-color: var(--color-bg-0);
}
::-webkit-scrollbar-thumb {
  background-color: var(--color-border);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background-color: var(--color-accent-dim);
}


/* ================================================================
   9. RESPONSIVE — MOBILE FIRST
   ================================================================ */

/* --- Smartphone (< 640px) --- */
@media (max-width: 639px) {
  .hero__inner {
    grid-template-columns: 1fr;
  }
  .hero__photo-wrap {
    display: none;
  }
  .hero__actions {
    flex-direction: column;
  }
  .hero__actions .btn {
    width: 100%;
    justify-content: center;
  }
  .about__grid {
    grid-template-columns: 1fr;
  }
}

/* --- Tablette portrait (< 820px) : nav mobile --- */
@media (max-width: 819px) {
  .nav__burger {
    display: flex;
  }

  .nav__links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-bg-0);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 1.5rem;
    transform: translateX(-100%);
    transition: transform var(--transition);
    overflow-y: auto;
    z-index: 999;
  }
  .nav__links.open {
    transform: translateX(0);
  }
  .nav__links .nav-link {
    font-size: 1.1rem;
    padding: 0.85rem 1rem;
    width: 100%;
  }
  .lang-switcher {
    border-left: none;
    border-top: 1px solid var(--color-border);
    margin-left: 0;
    padding: 1rem 0;
    width: 100%;
  }
}

/* --- Desktop large (> 1100px) : légères améliorations --- */
@media (min-width: 1100px) {
  .about__grid {
    gap: 4rem;
  }
}


/* ================================================================
   10. PRINT
   ================================================================ */
@media print {
  #nav,
  .hero__actions,
  .lang-switcher,
  .socials {
    display: none;
  }

  body {
    background-color: white;
    color: black;
  }

  a {
    color: black;
    text-decoration: underline;
  }

  .section {
    padding: 2rem 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}