/* ============================================================
   style.css — Stephen Losio Portfolio
   Auteur : Stephen Losio
   Description : Styles principaux du portfolio
   ============================================================ */

/* ─── VARIABLES ─────────────────────────────────────────── */
:root {
  --bg:         #080b0f;
  --bg2:        #0d1117;
  --bg3:        #111820;
  --border:     rgba(0, 255, 160, 0.12);
  --accent:     #00ffa0;
  --accent2:    #00c8ff;
  --accent3:    #ff4d6d;
  --text:       #e8f0fe;
  --muted:      #6b7f96;
  --card:       rgba(255, 255, 255, 0.03);
  --card-hover: rgba(0, 255, 160, 0.04);
  --mono:       'Space Mono', monospace;
  --sans:       'Syne', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  overflow-x: hidden;
  cursor: none;
}

/* Noise overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  opacity: 0.5;
}

/* ─── CUSTOM CURSOR ──────────────────────────────────────── */
#cursor {
  position: fixed;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transition: transform 0.15s ease;
  mix-blend-mode: screen;
}

#cursor-ring {
  position: fixed;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(0, 255, 160, 0.4);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transition: transform 0.4s ease, width 0.3s, height 0.3s, opacity 0.3s;
}

/* ─── NAVBAR ─────────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.2rem 4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  background: rgba(8, 11, 15, 0.85);
  transition: padding 0.3s;
}

.nav-logo {
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-decoration: none;
}
.nav-logo span { color: var(--muted); }

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  text-decoration: none;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  transition: color 0.2s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.3s;
}
.nav-links a:hover { color: var(--accent); }
.nav-links a:hover::after { width: 100%; }

/* ─── HERO ───────────────────────────────────────────────── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.04;
  background-image:
    linear-gradient(rgba(0, 255, 160, 1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 160, 1) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 60% 80% at 50% 50%, black 30%, transparent 100%);
}

.hero-glow {
  position: absolute;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0, 255, 160, 0.06) 0%, transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation: pulse 6s ease-in-out infinite;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.hero-tag {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  opacity: 0;
  animation: fadeUp 0.8s forwards 0.2s;
}
.hero-tag::before {
  content: '';
  display: block;
  width: 40px; height: 1px;
  background: var(--accent);
}

h1 {
  font-family: var(--sans);
  font-size: clamp(3.5rem, 8vw, 7rem);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.8s forwards 0.4s;
}
h1 .line2 {
  display: block;
  color: var(--accent);
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 480px;
  line-height: 1.7;
  margin-bottom: 3rem;
  opacity: 0;
  animation: fadeUp 0.8s forwards 0.6s;
}
.hero-sub strong { color: var(--text); }

.hero-ctas {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.8s forwards 0.8s;
}

.hero-scroll {
  position: absolute;
  bottom: 3rem; left: 4rem;
  z-index: 1;
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.2em;
  display: flex;
  align-items: center;
  gap: 1rem;
  opacity: 0;
  animation: fadeUp 0.8s forwards 1.2s;
}
.hero-scroll::before {
  content: '';
  width: 50px; height: 1px;
  background: var(--muted);
}

.hero-num {
  position: absolute;
  right: 4rem; top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono);
  font-size: 8rem;
  font-weight: 700;
  color: rgba(0, 255, 160, 0.04);
  z-index: 0;
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

/* ─── BUTTONS ────────────────────────────────────────────── */
.btn {
  padding: 0.9rem 2rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 2px;
  transition: all 0.25s;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.btn-primary {
  background: var(--accent);
  color: #000;
  font-weight: 700;
}
.btn-primary:hover {
  background: #fff;
  transform: translateY(-2px);
}

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

/* ─── SECTIONS ───────────────────────────────────────────── */
section { padding: 7rem 4rem; position: relative; }

.section-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 0.35em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.section-label::after {
  content: '';
  flex: 1;
  max-width: 60px;
  height: 1px;
  background: var(--border);
}

h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
h2 .accent { color: var(--accent); }

.section-intro {
  color: var(--muted);
  font-size: 1rem;
  max-width: 500px;
  line-height: 1.7;
  margin-bottom: 4rem;
}

/* ─── ABOUT ──────────────────────────────────────────────── */
#about {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.about-text p {
  color: var(--muted);
  line-height: 1.9;
  font-size: 1rem;
  margin-bottom: 1.2rem;
}
.about-text p strong { color: var(--text); }

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 1.5rem;
  border-radius: 4px;
  transition: border-color 0.3s, background 0.3s;
}
.stat-card:hover {
  border-color: var(--accent);
  background: var(--card-hover);
}

.stat-num {
  font-family: var(--mono);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent);
  display: block;
  line-height: 1;
}
.stat-desc {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.4rem;
  letter-spacing: 0.05em;
}

.about-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.info-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.2rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 0.78rem;
  transition: border-color 0.3s;
}
.info-row:hover { border-color: var(--accent); }
.info-icon { color: var(--accent); width: 18px; text-align: center; }
.info-label { color: var(--muted); flex: 0 0 100px; }
.info-val { color: var(--text); }

/* ─── TERMINAL ───────────────────────────────────────────── */
.terminal {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 6px 6px 0 0;
  padding: 0.7rem 1rem;
  margin-bottom: -1px;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.t-dot { width: 10px; height: 10px; border-radius: 50%; }
.t-dot.r { background: #ff5f57; }
.t-dot.y { background: #ffc62d; }
.t-dot.g { background: #28c840; }
.terminal-title {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--muted);
  margin-left: auto;
}
.terminal-body {
  background: #080b0f;
  border: 1px solid var(--border);
  border-radius: 0 0 6px 6px;
  padding: 1.5rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.8;
  overflow: hidden;
}
.t-line { color: var(--muted); }
.t-line .t-cmd  { color: var(--text); }
.t-line .t-acc  { color: var(--accent); }
.t-line .t-blue { color: var(--accent2); }
.t-prompt { color: var(--accent); }

/* ─── SKILLS ─────────────────────────────────────────────── */
#competences { background: var(--bg); }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.skill-block {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.8rem;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.skill-block::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s;
}
.skill-block:hover {
  border-color: var(--accent);
  background: var(--card-hover);
  transform: translateY(-3px);
}
.skill-block:hover::before { transform: scaleX(1); }

.skill-cat {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.skill-tags { display: flex; flex-wrap: wrap; gap: 0.6rem; }

.tag {
  padding: 0.35rem 0.8rem;
  background: rgba(0, 255, 160, 0.05);
  border: 1px solid rgba(0, 255, 160, 0.15);
  border-radius: 2px;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--text);
  letter-spacing: 0.05em;
  transition: all 0.2s;
}
.tag:hover {
  background: rgba(0, 255, 160, 0.1);
  border-color: var(--accent);
  color: var(--accent);
}
.tag.blue { border-color: rgba(0, 200, 255, 0.15); }
.tag.blue:hover {
  background: rgba(0, 200, 255, 0.1);
  border-color: var(--accent2);
  color: var(--accent2);
}
.tag.red { border-color: rgba(255, 77, 109, 0.15); }
.tag.red:hover {
  background: rgba(255, 77, 109, 0.08);
  border-color: var(--accent3);
  color: var(--accent3);
}

/* ─── EXPERIENCE / TIMELINE ──────────────────────────────── */
#experience {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.timeline { position: relative; }
.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 1px;
  background: var(--border);
}

.tl-item {
  padding-left: 3rem;
  margin-bottom: 3rem;
  position: relative;
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.6s, transform 0.6s;
}
.tl-item.visible {
  opacity: 1;
  transform: translateX(0);
}

.tl-dot {
  position: absolute;
  left: -5px; top: 6px;
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  transition: background 0.3s;
}
.tl-item:hover .tl-dot { background: var(--accent); }

.tl-date {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  margin-bottom: 0.5rem;
}
.tl-title {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.2rem;
}
.tl-company {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.tl-company .dot { color: var(--accent); }

.tl-tasks { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.tl-tasks li {
  font-size: 0.88rem;
  color: var(--muted);
  padding-left: 1.2rem;
  position: relative;
  line-height: 1.6;
}
.tl-tasks li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.65rem;
  top: 3px;
}

/* ─── PROJECTS ───────────────────────────────────────────── */
#projets { background: var(--bg); }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.proj-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2rem;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.proj-card::after {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  background: linear-gradient(135deg, rgba(0, 255, 160, 0.03), transparent);
  transition: opacity 0.3s;
}
.proj-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}
.proj-card:hover::after { opacity: 1; }

.proj-num {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.2em;
}
.proj-name { font-weight: 700; font-size: 1.2rem; }
.proj-desc {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.7;
  flex: 1;
}
.proj-stack { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: auto; }

.stack-badge {
  padding: 0.25rem 0.7rem;
  background: rgba(0, 200, 255, 0.06);
  border: 1px solid rgba(0, 200, 255, 0.15);
  border-radius: 2px;
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--accent2);
  letter-spacing: 0.05em;
}

/* ─── FORMATIONS ─────────────────────────────────────────── */
#formations {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.edu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.edu-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2rem;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.edu-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.4s;
}
.edu-card:hover::before { transform: scaleY(1); }
.edu-card:hover {
  border-color: var(--accent);
  background: var(--card-hover);
}

.edu-year {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  margin-bottom: 0.8rem;
  display: block;
}
.edu-degree {
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 0.3rem;
  line-height: 1.3;
}
.edu-school {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
}

/* ─── CERTIFICATIONS ─────────────────────────────────────── */
#certifications { background: var(--bg); }

.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
}

.cert-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.4rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: all 0.3s;
}
.cert-card:hover {
  border-color: var(--accent);
  background: var(--card-hover);
  transform: translateX(4px);
}

.cert-icon {
  width: 36px; height: 36px;
  border-radius: 4px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}
.cert-icon.sec { background: rgba(0, 255, 160, 0.1); color: var(--accent); }
.cert-icon.dev { background: rgba(0, 200, 255, 0.1); color: var(--accent2); }

.cert-name { font-size: 0.85rem; font-weight: 600; line-height: 1.3; }
.cert-issuer {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--muted);
  margin-top: 0.2rem;
}

/* ─── CONTACT ────────────────────────────────────────────── */
#contact {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  text-align: center;
}

.contact-inner { max-width: 600px; margin: 0 auto; }

.contact-email {
  font-family: var(--mono);
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  color: var(--text);
  text-decoration: none;
  display: inline-block;
  padding: 1.2rem 2.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  margin-bottom: 3rem;
  transition: all 0.3s;
  letter-spacing: 0.05em;
}
.contact-email:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--card-hover);
}

.socials { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }

.social-btn {
  padding: 0.8rem 1.8rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 2px;
  color: var(--muted);
  transition: all 0.25s;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.social-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ─── FOOTER ─────────────────────────────────────────────── */
footer {
  padding: 2rem 4rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--muted);
}
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--accent); }
.footer-badge {
  color: var(--accent);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
}

/* ─── SCROLL REVEAL ──────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── ANIMATIONS ─────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  50%       { transform: translate(-50%, -50%) scale(1.15); }
}

/* ─── RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 768px) {
  nav { padding: 1rem 1.5rem; }
  .nav-links { display: none; }

  #hero { padding: 0 1.5rem; }
  section { padding: 5rem 1.5rem; }

  h1 { font-size: 3rem; }
  .hero-num { display: none; }

  .about-grid,
  .edu-grid { grid-template-columns: 1fr; gap: 2.5rem; }

  footer {
    padding: 1.5rem;
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  body { cursor: auto; }
  #cursor, #cursor-ring { display: none; }
}