/* ===================================================================
   PORTFOLIO — BUT RÉSEAUX & TÉLÉCOMMUNICATIONS
   Concept : le site est organisé comme une pile OSI. La frise se lit
   comme un traceroute (hops numérotés), la page de garde s'ouvre sur
   un mini-terminal, et un repère "câble RJ45 / T568B" sépare les
   grandes sections.
   =================================================================== */

:root {
  --color-bg: #0a0e16;
  --color-bg-alt: #0d1320;
  --color-surface: #121927;
  --color-surface-2: #1a2333;
  --color-border: #232e42;
  --color-text: #eaeef5;
  --color-text-muted: #8b95ac;
  --color-accent: #34e0c4;
  --color-accent-dim: rgba(52, 224, 196, 0.12);
  --color-accent-2: #ff8a4c;

  --font-display: "Space Grotesk", sans-serif;
  --font-body: "Manrope", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  --max-width: 1120px;
  --radius: 14px;
  --radius-sm: 8px;
  --transition: 220ms ease;
}

/* ---------- Reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Helpers ---------- */
.section-inner, .nav, .footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 18px;
}
.eyebrow .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-dim);
}

.section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.9rem, 3.2vw, 2.6rem);
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}

.section-lead {
  color: var(--color-text-muted);
  max-width: 620px;
  font-size: 1.02rem;
  margin-bottom: 48px;
}

.hl { color: var(--color-accent); }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity 600ms ease, transform 600ms ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 26px; border-radius: var(--radius-sm);
  font-weight: 600; font-size: 0.95rem;
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
}
.btn-primary { background: var(--color-accent); color: #06120f; }
.btn-primary:hover { transform: translateY(-2px); background: #4ff0d4; }
.btn-secondary { background: transparent; border: 1px solid var(--color-border); color: var(--color-text); }
.btn-secondary:hover { border-color: var(--color-accent); color: var(--color-accent); transform: translateY(-2px); }
.btn-block { width: 100%; }

/* ===================================================================
   TRACEUR DE PILE OSI (signature visuelle, scrollspy décoratif)
   =================================================================== */
.stack-tracker {
  position: fixed;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 40;
  background: rgba(18, 25, 39, 0.6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px 18px;
  backdrop-filter: blur(8px);
  display: none;
}
@media (min-width: 1280px) { .stack-tracker { display: block; } }

.stack-label {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.stack-list {
  display: flex; flex-direction: column; gap: 10px;
  border-left: 1px solid var(--color-border);
  padding-left: 12px;
}

.stack-item {
  position: relative;
  display: flex; align-items: baseline; gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-text-muted);
  opacity: 0.55;
  transition: opacity var(--transition), color var(--transition);
}
.stack-item::before {
  content: "";
  position: absolute; left: -13px; top: 50%; transform: translateY(-50%);
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--color-border);
  transition: background var(--transition), box-shadow var(--transition);
}
.stack-item-inert { opacity: 0.25; }
.stack-item.is-active { opacity: 1; color: var(--color-accent); }
.stack-item.is-active::before { background: var(--color-accent); box-shadow: 0 0 0 3px var(--color-accent-dim); }

.stack-num { font-weight: 500; }
.stack-name { letter-spacing: 0.02em; }

/* ===================================================================
   NAVIGATION
   =================================================================== */
.nav-wrap {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  backdrop-filter: blur(10px);
  background: rgba(10, 14, 22, 0.72);
  border-bottom: 1px solid var(--color-border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.nav-logo { font-family: var(--font-mono); font-weight: 500; font-size: 1.05rem; letter-spacing: 0.02em; }
.nav-logo-bracket { color: var(--color-accent); }
.nav-menu { display: flex; align-items: center; gap: 32px; font-size: 0.92rem; }
.nav-link { position: relative; color: var(--color-text-muted); transition: color var(--transition); }
.nav-link:hover { color: var(--color-text); }
.nav-link-cta { color: var(--color-text); border: 1px solid var(--color-border); padding: 9px 18px; border-radius: var(--radius-sm); }
.nav-link-cta:hover { border-color: var(--color-accent); color: var(--color-accent); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; width: 28px; }
.nav-toggle span { display: block; height: 2px; background: var(--color-text); border-radius: 2px; transition: transform var(--transition), opacity var(--transition); }

/* ===================================================================
   HERO
   =================================================================== */
.hero {
  position: relative; min-height: 100vh;
  display: flex; flex-direction: column; justify-content: center;
  padding: 140px 32px 96px;
  overflow: hidden;
}

.hero-grid {
  position: absolute; inset: 0;
  background-image: radial-gradient(circle, rgba(52, 224, 196, 0.16) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(ellipse 70% 60% at 30% 30%, black 0%, transparent 75%);
  opacity: 0.7;
}

.hero-glow {
  position: absolute; top: -120px; right: -160px; width: 560px; height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(52, 224, 196, 0.18), transparent 70%);
  filter: blur(10px);
  animation: pulse-glow 7s ease-in-out infinite;
}
@keyframes pulse-glow { 0%, 100% { opacity: 0.55; transform: scale(1); } 50% { opacity: 0.9; transform: scale(1.07); } }

.hero-inner { position: relative; z-index: 1; width: 100%; max-width: var(--max-width); margin: 0 auto; }

.hero-columns {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
}
@media (max-width: 900px) { .hero-columns { grid-template-columns: 1fr; gap: 40px; } }

.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
}
.hero-title-accent { color: var(--color-accent); }

.hero-subtitle { font-size: clamp(1.05rem, 1.6vw, 1.2rem); color: var(--color-text); margin-bottom: 18px; font-weight: 500; }
.hero-text { color: var(--color-text-muted); max-width: 540px; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-status {
  position: relative; z-index: 1; margin-top: 64px;
  display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
  font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.03em;
  color: var(--color-text-muted);
}
.hero-status .sep { opacity: 0.4; }

.status-led {
  display: inline-block; width: 7px; height: 7px; border-radius: 50%;
  background: var(--color-accent); margin-right: 8px;
  box-shadow: 0 0 0 3px var(--color-accent-dim);
  animation: blink 2.4s ease-in-out infinite;
}
.status-led-active { background: var(--color-accent-2); box-shadow: 0 0 0 3px rgba(255, 138, 76, 0.18); }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

/* ---------- Terminal (signature de la page de garde) ---------- */
.terminal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.6);
}
.terminal-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-2);
}
.terminal-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--color-border); }
.terminal-title { margin-left: 8px; font-family: var(--font-mono); font-size: 0.72rem; color: var(--color-text-muted); }
.terminal-body { padding: 22px 20px; font-family: var(--font-mono); font-size: 0.84rem; line-height: 1.95; min-height: 230px; }
.term-cmd { color: var(--color-text); }
.term-out { color: var(--color-accent); margin-bottom: 8px; }
.prompt { color: var(--color-accent-2); margin-right: 6px; }
.term-cursor { display: inline-block; width: 7px; height: 14px; background: var(--color-accent); animation: blink 1s steps(2) infinite; vertical-align: middle; }

/* ===================================================================
   DIVISEUR "CÂBLE RJ45 / T568B"
   =================================================================== */
.cable-divider { display: flex; width: 100%; height: 6px; }
.cable-divider span { flex: 1; }
.cable-divider span:nth-child(1) { background: linear-gradient(90deg, #fff 50%, #ff7a30 50%); }
.cable-divider span:nth-child(2) { background: #ff7a30; }
.cable-divider span:nth-child(3) { background: linear-gradient(90deg, #fff 50%, #34d17a 50%); }
.cable-divider span:nth-child(4) { background: #2d8fff; }
.cable-divider span:nth-child(5) { background: linear-gradient(90deg, #fff 50%, #2d8fff 50%); }
.cable-divider span:nth-child(6) { background: #34d17a; }
.cable-divider span:nth-child(7) { background: linear-gradient(90deg, #fff 50%, #8a5a3b 50%); }
.cable-divider span:nth-child(8) { background: #8a5a3b; }

/* ===================================================================
   SECTIONS GÉNÉRIQUES
   =================================================================== */
.section { padding: 110px 0; }
.section-alt { background: var(--color-bg-alt); }

/* ===================================================================
   FRISE / TRACEROUTE
   =================================================================== */
.timeline {
  position: relative;
  margin-left: 12px;
  padding-left: 56px;
  border-left: 2px solid var(--color-border);
}

.timeline-item { position: relative; padding-bottom: 48px; }
.timeline-item:last-child { padding-bottom: 0; }

.timeline-node {
  position: absolute;
  left: -75px;
  top: 0;
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--color-bg-alt);
  border: 2px solid var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--color-accent);
}
.timeline-item-active .timeline-node {
  border-color: var(--color-accent-2);
  color: var(--color-accent-2);
  animation: node-pulse 2s ease-in-out infinite;
}
@keyframes node-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 138, 76, 0.35); }
  50% { box-shadow: 0 0 0 8px rgba(255, 138, 76, 0); }
}

.timeline-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 26px 28px; }

.hop-meta {
  display: flex; justify-content: space-between; align-items: center;
  gap: 12px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 0.72rem;
  color: var(--color-text-muted);
  margin-bottom: 14px;
}
.hop-host { color: var(--color-accent); }
.hop-rtt { padding: 2px 10px; border: 1px solid var(--color-border); border-radius: 999px; white-space: nowrap; }

.timeline-title { font-family: var(--font-display); font-size: 1.18rem; font-weight: 600; margin-bottom: 8px; }
.timeline-desc { color: var(--color-text-muted); font-size: 0.96rem; max-width: 560px; }

/* ===================================================================
   PROJETS (sans visuel pour l'instant : icône + référence)
   =================================================================== */
.project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform var(--transition), border-color var(--transition);
}
.project-card:hover { transform: translateY(-4px); border-color: var(--color-accent); }

.project-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.project-icon {
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px;
  background: var(--color-accent-dim);
  color: var(--color-accent);
}
.project-icon svg { width: 21px; height: 21px; }
.project-ref { font-family: var(--font-mono); font-size: 0.7rem; color: var(--color-text-muted); letter-spacing: 0.04em; }

.project-title { font-family: var(--font-display); font-size: 1.1rem; font-weight: 600; margin-bottom: 10px; }
.project-desc { color: var(--color-text-muted); font-size: 0.92rem; margin-bottom: 18px; }

.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.tag {
  font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.02em;
  color: var(--color-accent); background: var(--color-accent-dim);
  border-radius: 999px; padding: 5px 12px;
}

.project-links { display: flex; gap: 18px; }
.link-arrow { font-size: 0.88rem; font-weight: 600; color: var(--color-text); transition: color var(--transition); }
.link-arrow:hover { color: var(--color-accent); }

/* ===================================================================
   ALTERNANCE
   =================================================================== */
.alternance-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 28px; align-items: start; }
.mission-card, .skills-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 32px; }
.mission-head { display: flex; align-items: center; margin-bottom: 18px; }
.mission-company { font-family: var(--font-mono); font-size: 0.82rem; color: var(--color-text-muted); letter-spacing: 0.02em; }
.mission-role { font-family: var(--font-display); font-size: 1.4rem; font-weight: 600; margin-bottom: 6px; }
.mission-dates { font-family: var(--font-mono); font-size: 0.78rem; color: var(--color-accent); margin-bottom: 18px; }
.mission-intro { color: var(--color-text-muted); font-size: 0.95rem; margin-bottom: 22px; }

.mission-list { display: flex; flex-direction: column; gap: 12px; }
.mission-list li { position: relative; padding-left: 20px; color: var(--color-text-muted); font-size: 0.95rem; }
.mission-list li::before { content: ""; position: absolute; left: 0; top: 9px; width: 8px; height: 1px; background: var(--color-accent); }

.skills-title { font-family: var(--font-display); font-size: 1.2rem; font-weight: 600; margin-bottom: 24px; }
.skill-group { margin-bottom: 22px; }
.skill-group:last-child { margin-bottom: 0; }
.skill-group-title { font-family: var(--font-mono); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-muted); margin-bottom: 10px; }

/* ===================================================================
   CONTACT
   =================================================================== */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 48px; }
.contact-text { color: var(--color-text-muted); margin-bottom: 32px; max-width: 420px; }
.contact-list { display: flex; flex-direction: column; gap: 16px; margin-bottom: 32px; }
.contact-list li { display: flex; flex-direction: column; gap: 2px; }
.contact-label { font-family: var(--font-mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-muted); }
.contact-list a:hover { color: var(--color-accent); }

.contact-socials { display: flex; gap: 14px; margin-bottom: 32px; }
.social-link { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border: 1px solid var(--color-border); border-radius: var(--radius-sm); transition: border-color var(--transition), color var(--transition); }
.social-link svg { width: 18px; height: 18px; }
.social-link:hover { border-color: var(--color-accent); color: var(--color-accent); }

.contact-form { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 32px; display: flex; flex-direction: column; gap: 18px; }
.form-row { display: flex; flex-direction: column; gap: 8px; }
.form-row label { font-family: var(--font-mono); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-text-muted); }
.form-row input, .form-row textarea {
  background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  padding: 12px 14px; color: var(--color-text); font-family: var(--font-body); font-size: 0.95rem;
  resize: vertical; transition: border-color var(--transition);
}
.form-row input:focus, .form-row textarea:focus { border-color: var(--color-accent); }
.form-feedback { font-size: 0.86rem; color: var(--color-accent); min-height: 18px; }

/* ===================================================================
   FOOTER
   =================================================================== */
.footer { border-top: 1px solid var(--color-border); padding: 32px 0 48px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.86rem; color: var(--color-text-muted); }
.footer-top:hover { color: var(--color-accent); }

/* ===================================================================
   RESPONSIVE
   =================================================================== */
@media (max-width: 900px) {
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .alternance-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
    max-height: 0; overflow: hidden;
    transition: max-height var(--transition);
  }
  .nav-menu.is-open { max-height: 420px; }
  .nav-menu li { border-top: 1px solid var(--color-border); }
  .nav-link, .nav-link-cta { display: block; padding: 16px 32px; border-radius: 0; }
  .nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.is-open span:nth-child(2) { opacity: 0; }
  .nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .project-grid { grid-template-columns: 1fr; }
  .section { padding: 80px 0; }
  .hero { padding-top: 120px; }

  .timeline { padding-left: 44px; }
  .timeline-node { left: -56px; width: 30px; height: 30px; font-size: 0.66rem; }
}

/* ===================================================================
   AJOUTS POUR LA FUSION (images projets + cartes placeholder)
   =================================================================== */

/* Cartes avec image (BUT1) */
.project-card .project-thumb {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: var(--radius) var(--radius) 0 0;
  background: var(--color-surface-2);
  border-bottom: 1px solid var(--color-border);
}
.project-card .project-thumb img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 500ms ease;
}
.project-card:hover .project-thumb img { transform: scale(1.04); }

.project-body { padding: 24px; }

.project-head-inline {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 12px;
}
.project-year {
  font-family: var(--font-mono); font-size: 0.72rem;
  color: var(--color-text-muted);
}

/* Cartes placeholder (BUT2) */
.project-card-placeholder {
  opacity: 0.55;
  border-style: dashed;
}
.project-card-placeholder:hover { opacity: 0.75; transform: none; }

/* Mission intro */
.mission-intro { color: var(--color-text-muted); font-size: 0.95rem; margin-bottom: 22px; }