/* ==========================================================================
   PowerTech — design tokens
   Palette : bleu Microsoft (#0F6CBD) + cyan Cisco (#00BCEB) sur fond nuit
   réseau. Un seul accent chaud (ambre) réservé aux moments de gratitude.
   Display : Fraunces (chaleur éditoriale) / Technique : Space Grotesk /
   Corps : Inter.
   ========================================================================== */

:root {
  --bg-void: #060b14;
  --bg-panel: #0d1526;
  --bg-panel-hover: #101c33;
  --ms-blue: #0f6cbd;
  --ms-blue-soft: #2f8fe0;
  --cisco-cyan: #00bceb;
  --cisco-cyan-soft: #3fd4ff;
  --signal: #eaf2ff;
  --muted: #7c93b3;
  --muted-dim: #4a5b78;
  --pulse-amber: #ffb000;
  --line: rgba(234, 242, 255, 0.08);
  --line-strong: rgba(234, 242, 255, 0.16);

  --font-display: 'Fraunces', 'Iowan Old Style', serif;
  --font-tech: 'Space Grotesk', ui-sans-serif, sans-serif;
  --font-body: 'Inter', ui-sans-serif, sans-serif;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);

  --edge: clamp(1.5rem, 6vw, 6rem);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

body {
  margin: 0;
  background: var(--bg-void);
  color: var(--signal);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--cisco-cyan); color: var(--bg-void); }

a, button { font: inherit; color: inherit; }

/* ---------------------------------- Preloader ---------------------------------- */
#preloader {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--bg-void);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  transition: opacity 0.6s var(--ease-out), visibility 0.6s;
}
#preloader.is-done { opacity: 0; visibility: hidden; pointer-events: none; }
.preloader-mark {
  font-family: var(--font-tech);
  font-size: 0.95rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.preloader-bar {
  width: 160px;
  height: 2px;
  background: var(--line);
  border-radius: 2px;
  overflow: hidden;
}
.preloader-bar span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--ms-blue-soft), var(--cisco-cyan-soft));
  animation: preload-fill 1.1s var(--ease-soft) forwards;
}
@keyframes preload-fill { to { width: 100%; } }

/* ---------------------------------- Network canvas ---------------------------------- */
#net-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* ---------------------------------- Nav ---------------------------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem var(--edge);
  background: linear-gradient(to bottom, rgba(6, 11, 20, 0.85), transparent);
  pointer-events: none;
}
.nav-mark {
  font-family: var(--font-tech);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}
.nav-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-tech);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cisco-cyan);
  box-shadow: 0 0 0 0 rgba(0, 188, 235, 0.6);
  animation: pulse-dot 2.4s ease-out infinite;
}
@keyframes pulse-dot {
  0% { box-shadow: 0 0 0 0 rgba(0, 188, 235, 0.5); }
  70% { box-shadow: 0 0 0 8px rgba(0, 188, 235, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 188, 235, 0); }
}

/* ---------------------------------- Layout base ---------------------------------- */
main { position: relative; z-index: 1; }
section { padding: clamp(5rem, 12vh, 9rem) var(--edge); }

.eyebrow {
  font-family: var(--font-tech);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 1.25rem;
}
.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--cisco-cyan-soft);
}

.section-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.7rem, 3.4vw, 2.6rem);
  line-height: 1.2;
  max-width: 18ch;
  margin: 0 0 3.5rem;
}

/* ---------------------------------- Hero ---------------------------------- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 1.4rem;
  padding-top: 6rem;
}
.hero-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(3.6rem, 12vw, 8.5rem);
  line-height: 0.95;
  margin: 0;
  letter-spacing: -0.01em;
}
.hero-title em {
  font-style: italic;
  font-weight: 400;
  background: linear-gradient(100deg, var(--ms-blue-soft), var(--cisco-cyan-soft));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  font-family: var(--font-tech);
  font-size: clamp(0.95rem, 1.6vw, 1.15rem);
  color: var(--muted);
  max-width: 34ch;
  margin: 0;
}
.scroll-cue {
  margin-top: 3rem;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--muted);
  font-family: var(--font-tech);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color 0.3s var(--ease-soft);
}
.scroll-cue:hover { color: var(--cisco-cyan-soft); }
.scroll-cue svg { animation: bob 2s ease-in-out infinite; }
@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(5px); } }

/* ---------------------------------- Intro ---------------------------------- */
.intro-text {
  max-width: 62ch;
  margin: 0 auto;
}
.intro-text p {
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  line-height: 1.75;
  color: var(--signal);
  margin: 0 0 1.6rem;
}
.intro-text blockquote {
  margin: 3rem 0;
  padding: 0.4rem 0 0.4rem 1.6rem;
  border-left: 2px solid var(--pulse-amber);
}
.intro-text blockquote p {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  color: var(--signal);
  margin: 0 0 0.6rem;
  line-height: 1.4;
}
.intro-text blockquote cite {
  font-family: var(--font-tech);
  font-style: normal;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------------------------------- Team ---------------------------------- */
.team-group { margin-bottom: 3.5rem; }
.team-group:last-child { margin-bottom: 0; }
.team-group-title {
  font-family: var(--font-tech);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--muted);
  margin: 0 0 1.5rem;
}
.team-group-title span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.6em;
  height: 1.6em;
  margin-left: 0.5rem;
  border-radius: 50%;
  font-size: 0.85em;
  vertical-align: middle;
}
.team-group-title[data-group="ms"] span { background: rgba(15, 108, 189, 0.18); color: var(--ms-blue-soft); }
.team-group-title[data-group="cisco"] span { background: rgba(0, 188, 235, 0.15); color: var(--cisco-cyan-soft); }

.member-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1.1rem;
}
.member-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
  padding: 1.75rem 1rem;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  text-align: center;
  transition: transform 0.35s var(--ease-out), border-color 0.35s var(--ease-out), background 0.35s var(--ease-out);
}
.member-card:nth-child(odd) { transform: translateY(6px); }
.member-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  background: var(--bg-panel-hover);
}
.member-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-tech);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--bg-void);
}
.member-avatar[data-group="ms"] { background: linear-gradient(135deg, var(--ms-blue-soft), var(--ms-blue)); }
.member-avatar[data-group="cisco"] { background: linear-gradient(135deg, var(--cisco-cyan-soft), var(--cisco-cyan)); }
.member-name {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--signal);
}

/* ---------------------------------- Projects ---------------------------------- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
  text-align: left;
  padding: 2.4rem 2.2rem;
  border-radius: 20px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.4s var(--ease-out), border-color 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}
.project-card:hover { transform: translateY(-6px); }
.project-card--ms:hover { border-color: rgba(47, 143, 224, 0.5); box-shadow: 0 20px 60px -20px rgba(15, 108, 189, 0.45); }
.project-card--cisco:hover { border-color: rgba(0, 188, 235, 0.5); box-shadow: 0 20px 60px -20px rgba(0, 188, 235, 0.4); }
.project-card.is-shaking { animation: shake 0.42s var(--ease-soft); }
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-8px); }
  40% { transform: translateX(7px); }
  60% { transform: translateX(-5px); }
  80% { transform: translateX(3px); }
}
.project-glyph {
  display: inline-flex;
  padding: 0.7rem;
  border-radius: 12px;
  background: rgba(234, 242, 255, 0.06);
}
.project-card--ms .project-glyph { color: var(--ms-blue-soft); }
.project-card--cisco .project-glyph { color: var(--cisco-cyan-soft); }
.project-name {
  font-family: var(--font-tech);
  font-weight: 600;
  font-size: 1.3rem;
}
.project-desc {
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.5;
}
.project-cta {
  margin-top: 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-tech);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}
.project-card--ms .project-cta { color: var(--ms-blue-soft); }
.project-card--cisco .project-cta { color: var(--cisco-cyan-soft); }
.project-badge {
  position: absolute;
  top: 1.4rem;
  right: 1.4rem;
  font-family: var(--font-tech);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(0, 188, 235, 0.12);
  color: var(--cisco-cyan-soft);
  border: 1px solid rgba(0, 188, 235, 0.25);
}

/* ---------------------------------- Footer ---------------------------------- */
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2.5rem var(--edge) 3rem;
  font-family: var(--font-tech);
  font-size: 0.75rem;
  color: var(--muted-dim);
  border-top: 1px solid var(--line);
}

/* ---------------------------------- Reveal on scroll ---------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
  transition-delay: calc(var(--i, 0) * 70ms);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------------------------------- Toast (Cisco "bientôt") ---------------------------------- */
.toast {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  z-index: 120;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.2rem;
  background: var(--bg-panel);
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  font-family: var(--font-body);
  font-size: 0.88rem;
  box-shadow: 0 20px 45px -15px rgba(0, 0, 0, 0.6);
  transform: translateY(12px);
  opacity: 0;
  transition: transform 0.4s var(--ease-out), opacity 0.4s var(--ease-out);
}
.toast.is-visible { transform: translateY(0); opacity: 1; }

/* ---------------------------------- Thanks overlay ---------------------------------- */
.thanks-overlay {
  position: fixed;
  inset: 0;
  z-index: 150;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 50% 40%, #0a1424 0%, var(--bg-void) 70%);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.7s var(--ease-out), visibility 0.7s;
}
.thanks-overlay.is-open { opacity: 1; visibility: visible; }

.thanks-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--line);
}
.thanks-progress span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--ms-blue-soft), var(--cisco-cyan-soft));
  transition: width linear;
}

.thanks-skip {
  position: absolute;
  top: 2rem;
  right: var(--edge);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  padding: 0.55rem 1rem;
  border-radius: 999px;
  font-family: var(--font-tech);
  font-size: 0.78rem;
  cursor: pointer;
  transition: color 0.3s, border-color 0.3s;
}
.thanks-skip:hover { color: var(--signal); border-color: var(--line-strong); background: rgba(234, 242, 255, 0.05); }

.thanks-stage {
  max-width: 46rem;
  padding: 0 var(--edge);
  text-align: center;
}
.thanks-line {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.6rem, 4vw, 2.7rem);
  line-height: 1.35;
  color: var(--signal);
  opacity: 0;
  filter: blur(6px);
  transform: translateY(14px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out), filter 0.9s var(--ease-out);
}
.thanks-line.is-active { opacity: 1; filter: blur(0); transform: translateY(0); }
.thanks-line.is-quote { font-style: italic; color: var(--cisco-cyan-soft); }
.thanks-line.is-signature {
  font-size: clamp(2rem, 5.5vw, 3.4rem);
  background: linear-gradient(100deg, var(--ms-blue-soft), var(--cisco-cyan-soft));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.thanks-line.is-final {
  font-family: var(--font-tech);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------------------------------- Mobile ---------------------------------- */
@media (max-width: 640px) {
  section { padding-left: 1.25rem; padding-right: 1.25rem; }
  .nav { padding: 1.1rem 1.25rem; }
  .member-card:nth-child(odd) { transform: none; }
  .project-badge { position: static; align-self: flex-start; }
}