/* =============================================================
   thierrydubosse.com — style.css v2
   Aligné identité Etherioo : #040404 · #007aff · Dhurjati+Inter
   ============================================================= */

@import url('https://fonts.googleapis.com/css2?family=Dhurjati&family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ---------- Variables (calées sur Etherioo v3) ---------- */
:root {
  --bg:         #040404;
  --surface:    #0c0c0c;
  --surface2:   #131313;
  --surface3:   #1a1a1a;
  --border:     #1e1e1e;
  --border2:    #2a2a2a;
  --accent:     #007aff;
  --accent2:    #3395ff;
  --text:       #f5f5f5;
  --muted:      #777;
  --muted2:     #999;
  --success:    #30d158;
  --danger:     #ff3b30;
  --nav-h:      72px;
  --max-w:      1100px;
  --r-lg:       16px;
  --r-md:       10px;
  --r-sm:       6px;
  --f-brand:    'Dhurjati', sans-serif;
  --f-body:     'Inter', sans-serif;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--f-body);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent2); }

/* ---------- Container ---------- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* =============================================================
   NAV
============================================================= */
#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 200;
  background: rgba(4,4,4,.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--f-brand);
  font-size: 1.6rem;
  color: var(--text);
  letter-spacing: .1em;
  line-height: 1;
}
.nav-logo:hover { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color .2s;
}
.nav-links a:hover { color: var(--text); }
.nav-links .nav-etherioo {
  color: var(--accent);
  border: 1px solid rgba(0,122,255,.3);
  border-radius: 50px;
  padding: .35rem .9rem;
  font-size: .75rem;
}
.nav-links .nav-etherioo:hover {
  background: rgba(0,122,255,.1);
  color: var(--accent2);
}

/* Burger */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: .25s;
}

/* =============================================================
   HERO
============================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-h);
}
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
}
.hero-glow.g1 {
  width: 600px; height: 500px;
  top: 5%; right: -100px;
  background: radial-gradient(circle, rgba(0,122,255,.18) 0%, transparent 70%);
}
.hero-glow.g2 {
  width: 400px; height: 400px;
  bottom: 10%; left: -80px;
  background: radial-gradient(circle, rgba(0,122,255,.08) 0%, transparent 70%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black, transparent 85%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 60px 24px 80px;
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
}
.eyebrow {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp .5s ease forwards .15s;
}
.hero-name {
  font-family: var(--f-brand);
  font-size: clamp(4rem, 11vw, 8rem);
  line-height: .9;
  letter-spacing: .04em;
  color: var(--text);
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp .6s ease forwards .3s;
}
.hero-name span { color: var(--accent); }

.hero-desc {
  font-size: 1rem;
  color: var(--muted2);
  line-height: 1.9;
  max-width: 460px;
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp .6s ease forwards .45s;
}
.hero-desc a { color: var(--accent2); font-weight: 500; }

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: var(--accent);
  color: #fff;
  padding: .75rem 1.75rem;
  border-radius: 50px;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  transition: background .2s, transform .15s;
  opacity: 0;
  animation: fadeUp .6s ease forwards .6s;
}
.btn-primary:hover { background: #0066dd; color: #fff; transform: translateY(-2px); }

/* =============================================================
   SECTIONS
============================================================= */
.section { padding: 96px 0; }
.section-alt { background: var(--surface); }

.section-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 3rem;
}
.section-num {
  font-family: var(--f-brand);
  font-size: 1rem;
  color: var(--accent);
  letter-spacing: .15em;
  opacity: .7;
}
.section-head h2 {
  font-family: var(--f-brand);
  font-size: clamp(2rem, 5vw, 2.8rem);
  letter-spacing: .05em;
  color: var(--text);
  line-height: 1;
}

/* =============================================================
   ABOUT
============================================================= */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.about-text p { color: var(--muted2); margin-bottom: 1.1rem; }
.about-text .lead { color: var(--text); font-size: 1.05rem; }
.about-text strong { color: var(--text); }

.skill-list { display: flex; flex-direction: column; gap: 1rem; }
.skill-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.1rem 1.2rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  transition: border-color .2s, transform .2s;
}
.skill-item:hover { border-color: rgba(0,122,255,.35); transform: translateX(3px); }
.skill-ico { font-size: 1.3rem; flex-shrink: 0; line-height: 1; margin-top: 1px; }
.skill-item strong { display: block; font-weight: 600; font-size: .9rem; color: var(--text); margin-bottom: .25rem; }
.skill-item p { font-size: .8rem; color: var(--muted); line-height: 1.5; }

/* =============================================================
   PORTFOLIO — Filter + Cards
============================================================= */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 2.5rem;
}
.fbtn {
  background: var(--surface2);
  border: 1px solid var(--border2);
  color: var(--muted);
  font-family: var(--f-body);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: .4rem 1rem;
  border-radius: 50px;
  cursor: pointer;
  transition: background .2s, border-color .2s, color .2s;
}
.fbtn:hover { color: var(--text); border-color: var(--border2); }
.fbtn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 1.25rem;
}
.card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1.5rem;
  transition: border-color .2s, transform .2s, box-shadow .2s, opacity .3s;
  position: relative;
  overflow: hidden;
}
.card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity .2s;
}
.card:hover { border-color: rgba(0,122,255,.3); transform: translateY(-3px); box-shadow: 0 16px 48px rgba(0,0,0,.5); }
.card:hover::after { opacity: 1; }
.card.hidden { display: none; }

.card-tag {
  display: inline-block;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(0,122,255,.08);
  border: 1px solid rgba(0,122,255,.18);
  border-radius: 50px;
  padding: .2rem .65rem;
  margin-bottom: .9rem;
}
.card h3 { font-size: .95rem; font-weight: 700; color: var(--text); margin-bottom: .6rem; line-height: 1.3; }
.card p { font-size: .82rem; color: var(--muted); line-height: 1.6; margin-bottom: 1rem; }

.techs { display: flex; flex-wrap: wrap; gap: .35rem; }
.techs span {
  font-size: .7rem;
  font-weight: 600;
  color: var(--muted);
  background: var(--surface3);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: .15rem .5rem;
}

/* =============================================================
   CONTACT
============================================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 4rem;
  align-items: start;
}
.contact-left .lead { font-size: 1rem; color: var(--text); line-height: 1.75; margin-bottom: 2rem; }

.contact-meta {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .9rem;
}
.contact-meta li {
  display: flex;
  align-items: center;
  gap: .65rem;
  font-size: .88rem;
  color: var(--muted2);
}
.contact-meta svg { color: var(--accent); flex-shrink: 0; }
.contact-meta a { color: var(--accent2); }

/* Form */
.form-box {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 2rem;
}
.fg { margin-bottom: 1.1rem; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

label {
  display: block;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: .4rem;
}
.req { color: var(--accent); }

input[type="text"],
input[type="email"],
input[type="number"],
textarea {
  width: 100%;
  background: var(--surface3);
  color: var(--text);
  border: 1px solid var(--border2);
  border-radius: var(--r-sm);
  padding: .65rem .9rem;
  font-family: var(--f-body);
  font-size: .88rem;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  -webkit-appearance: none;
}
input:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,122,255,.15);
}
textarea { resize: vertical; min-height: 110px; }

.math-input { width: 90px !important; }

.fg-math {
  background: rgba(0,122,255,.04);
  border: 1px solid rgba(0,122,255,.12);
  border-radius: var(--r-sm);
  padding: .9rem 1rem;
}
.fg-math label {
  text-transform: none;
  letter-spacing: 0;
  font-size: .83rem;
  color: var(--text);
  margin-bottom: .7rem;
}
.fg-math strong { color: var(--accent); }

.btn-send {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--r-sm);
  padding: .75rem 1.75rem;
  font-family: var(--f-body);
  font-weight: 700;
  font-size: .8rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background .2s, transform .15s;
  margin-top: .4rem;
}
.btn-send:hover { background: #0066dd; transform: translateY(-1px); }
.btn-send:active { transform: none; }

.msg-error {
  background: rgba(255,59,48,.08);
  border: 1px solid rgba(255,59,48,.25);
  color: #ff6b6b;
  border-radius: var(--r-sm);
  padding: .75rem 1rem;
  font-size: .84rem;
  margin-bottom: 1.1rem;
}
.msg-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 3rem 1.5rem;
  gap: 1rem;
  color: var(--text);
  font-size: .95rem;
}

/* =============================================================
   FOOTER
============================================================= */
.footer {
  border-top: 1px solid var(--border);
  padding: 1.75rem 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .65rem;
  font-size: .78rem;
  color: var(--muted);
}
.footer-brand { font-family: var(--f-brand); font-size: .95rem; color: var(--muted2); letter-spacing: .08em; }
.dot { color: var(--border2); }
.footer a { color: var(--muted); }
.footer a:hover { color: var(--accent); }

/* =============================================================
   ANIMATIONS
============================================================= */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: none; }
}
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .55s ease, transform .55s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* =============================================================
   RESPONSIVE
============================================================= */
@media (max-width: 860px) {
  .about-grid,
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .row2 { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--surface);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem 24px;
    gap: 1.25rem;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open { display: flex; }
  .menu-toggle { display: flex; }

  .hero-content { padding-top: 40px; padding-bottom: 60px; }
  .cards { grid-template-columns: 1fr; }
  .section { padding: 72px 0; }
  .form-box { padding: 1.25rem; }
}