/* =========================================================
   TOKENS
========================================================= */
:root{
  --bg: #0A1120;
  --surface: #101A2E;
  --surface-2: #15213A;
  --border: #223252;
  --text: #EAF0F8;
  --muted: #93A1BE;
  --accent: #2F8EE0;
  --accent-light: #63B3FF;
  --accent-soft: rgba(47,142,224,.14);

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;

  --container: 1120px;
  --radius: 14px;
  --radius-sm: 10px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3{
  font-family: var(--font-display);
  line-height: 1.15;
  margin: 0 0 .5em;
  letter-spacing: -0.01em;
}

h2{ font-size: clamp(1.7rem, 3vw, 2.3rem); }
h3{ font-size: 1.15rem; }
p{ margin: 0 0 1em; color: var(--muted); }

a{ color: inherit; text-decoration: none; }

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

svg{ width: 20px; height: 20px; flex-shrink: 0; }

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

section{ padding: 96px 0; }

.section-lead{
  max-width: 560px;
  margin-top: -.6em;
  margin-bottom: 2.5em;
}

:focus-visible{
  outline: 2px solid var(--accent-light);
  outline-offset: 3px;
}

/* =========================================================
   BUTTONS
========================================================= */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  border: 1px solid transparent;
  transition: transform .15s ease, background .2s ease, border-color .2s ease;
  cursor: pointer;
}
.btn:hover{ transform: translateY(-1px); }

.btn-primary{
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #051425;
}
.btn-primary:hover{ filter: brightness(1.05); }

.btn-outline{
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-outline:hover{ border-color: var(--accent-light); }

.btn-nav{ padding: 10px 18px; font-size: .88rem; }

/* =========================================================
   HEADER
========================================================= */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10,17,32,.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner{
  display: flex;
  align-items: center;
  gap: 24px;
  height: 76px;
}

.brand{ display: flex; align-items: center; gap: 10px; margin-right: auto; }

.brand-mark{
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent-light);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .9rem;
}

.brand-name{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
}
.brand-name em{ font-style: normal; color: var(--accent-light); }

/* Le menu est toujours déclenché par l'icône "3 traits",
   sur mobile comme sur ordinateur : pas de nav horizontale. */
.main-nav{
  display: none;
  position: absolute;
  top: 76px;
  right: 24px;
  min-width: 220px;
  flex-direction: column;
  gap: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
  box-shadow: 0 20px 50px rgba(0,0,0,.5);
}
.main-nav.open{ display: flex; }

.main-nav a{
  color: var(--muted);
  font-size: .93rem;
  font-weight: 500;
  padding: 10px 14px;
  border-radius: 8px;
  transition: color .2s ease, background .2s ease;
}
.main-nav a:hover{ color: var(--text); background: var(--surface-2); }
.main-nav a.active{ color: var(--accent-light); background: var(--accent-soft); }

.nav-toggle{
  display: grid;
  place-items: center;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  color: var(--text);
  cursor: pointer;
}
.nav-toggle:hover{ border-color: var(--accent-light); color: var(--accent-light); }

/* =========================================================
   HERO
========================================================= */
.hero{ padding-top: 72px; }

.hero-inner{
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 56px;
  align-items: center;
}

.eyebrow{
  color: var(--accent-light);
  font-weight: 600;
  font-size: .9rem;
  margin-bottom: 1em;
}

.hero-text h1{
  font-size: clamp(2.1rem, 4.2vw, 3.1rem);
  max-width: 14ch;
}
.hero-text h1 .accent{ color: var(--accent-light); }

.hero-lead{ max-width: 48ch; font-size: 1.05rem; }

.hero-actions{ display: flex; gap: 14px; flex-wrap: wrap; margin: 1.8em 0 1.6em; }

.hero-social{ display: flex; gap: 14px; }
.hero-social a{
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--muted);
  transition: color .2s ease, border-color .2s ease;
}
.hero-social a:hover{ color: var(--accent-light); border-color: var(--accent-light); }

.hero-media{ position: relative; justify-self: center; }

.hero-frame{
  width: min(360px, 80vw);
  aspect-ratio: 4/5;
  border-radius: 24px;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
}
.hero-photo{ width: 100%; height: 80%; object-fit: cover; }

.hero-badge{
  position: absolute;
  bottom: -18px;
  left: -18px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 12px 16px;
  border-radius: var(--radius);
  box-shadow: 0 12px 30px rgba(0,0,0,.35);
}
.hero-badge svg{ color: var(--accent-light); }
.hero-badge strong{ display: block; font-size: .88rem; }
.hero-badge span{ display: block; font-size: .78rem; color: var(--muted); }

/* =========================================================
   ABOUT
========================================================= */
.about-inner{
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 56px;
  align-items: start;
}

.about-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.about-card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.about-card svg{ color: var(--accent-light); margin-bottom: 10px; }
.about-card h3{ font-size: 1rem; margin-bottom: .3em; }
.about-card p{ font-size: .92rem; margin: 0; }

/* =========================================================
   SKILLS
========================================================= */
.skills-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.skill-card{
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  font-weight: 500;
  font-size: .92rem;
}
.skill-card svg{ color: var(--accent-light); }

/* =========================================================
   PROJECTS
========================================================= */
.projects{ background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.projects-grid{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.project-card{
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  gap: 18px;
  transition: border-color .2s ease;
}
.project-card:hover{ border-color: var(--accent); }

.project-logo{
  width: 56px; height: 56px;
  flex-shrink: 0;
  border-radius: 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  overflow: hidden;
}
.project-logo img{ width: 60%; height: 60%; object-fit: contain; }

.project-body h3{ margin-bottom: .3em; }
.project-body p{ font-size: .92rem; margin-bottom: 1em; }

.project-tags{ display: flex; gap: 8px; margin-bottom: 1.1em; flex-wrap: wrap; }
.project-tags span{
  font-size: .74rem;
  font-weight: 600;
  color: var(--accent-light);
  background: var(--accent-soft);
  padding: 4px 10px;
  border-radius: 999px;
}

.project-link{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: .88rem;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  padding-bottom: 2px;
  transition: color .2s ease, border-color .2s ease;
}
.project-link svg{ width: 15px; height: 15px; }
.project-link:hover{ color: var(--accent-light); border-color: var(--accent-light); }

/* =========================================================
   PAGE HERO (pages internes : à propos, compétences, projets...)
========================================================= */
.page-hero{
  padding: 64px 0 20px;
  text-align: center;
}
.page-hero h1{
  font-size: clamp(1.9rem, 4vw, 2.7rem);
}
.page-hero p{
  max-width: 520px;
  margin: 0 auto;
}

.page-hero-photo{
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 24px;
  border: 3px solid var(--accent);
  box-shadow: 0 10px 30px rgba(47,142,224,.35);
}

/* =========================================================
   PROJECTS — style "aperçu de site" (page projets)
========================================================= */
.projects-stack{
  display: flex;
  flex-direction: column;
  gap: 28px;
  max-width: 720px;
  margin: 0 auto;
}

.project-card-v2{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .2s ease, transform .2s ease;
}
.project-card-v2:hover{ border-color: var(--accent); transform: translateY(-2px); }

.project-preview{
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--surface-2);
  display: grid;
  place-items: center;
  border-bottom: 1px solid var(--border);
}
.project-preview img{
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-card-v2 .project-body{ padding: 22px 24px; }
.project-card-v2 h3{ font-size: 1.3rem; margin-bottom: .25em; }
.project-card-v2 p{ margin-bottom: 1.1em; }

.project-tags{ display: flex; gap: 8px; margin-bottom: 1.1em; flex-wrap: wrap; }
.project-tags span{
  font-size: .74rem;
  font-weight: 600;
  color: var(--accent-light);
  background: var(--accent-soft);
  padding: 4px 10px;
  border-radius: 999px;
}

.btn-visit{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .88rem;
  border: none;
  background: #22C55E;
  color: #062713;
  transition: filter .2s ease, transform .15s ease;
}
.btn-visit:hover{ filter: brightness(1.08); transform: translateY(-1px); }

/* =========================================================
   SERVICES
========================================================= */
.services-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.service-card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
}
.service-card svg{ color: var(--accent-light); margin-bottom: 14px; }
.service-card p{ font-size: .88rem; margin: 0; }

/* =========================================================
   CONTACT
========================================================= */
.contact{ text-align: left; }
.contact-inner{ max-width: 640px; }
.contact-inner h2{ font-size: clamp(1.9rem, 3.4vw, 2.5rem); }
.contact-actions{ display: flex; gap: 14px; flex-wrap: wrap; margin-top: 1.4em; }

/* =========================================================
   FOOTER
========================================================= */
.site-footer{ border-top: 1px solid var(--border); padding: 28px 0; }
.footer-inner{
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .85rem;
  color: var(--muted);
}
.footer-social{ display: flex; gap: 14px; }
.footer-social a{ color: var(--muted); }
.footer-social a:hover{ color: var(--accent-light); }

/* =========================================================
   CHAT WIDGET
========================================================= */
.chat-widget{
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 14px;
}

.chat-toggle{
  width: 56px; height: 56px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #051425;
  display: grid;
  place-items: center;
  box-shadow: 0 10px 26px rgba(47,142,224,.45);
}
.chat-toggle .icon-close{ display: none; }
.chat-widget.open .chat-toggle .icon-chat{ display: none; }
.chat-widget.open .chat-toggle .icon-close{ display: block; }

.chat-panel{
  width: min(340px, 86vw);
  max-height: 460px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: none;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0,0,0,.5);
}
.chat-widget.open .chat-panel{ display: flex; }

.chat-header{
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}
.chat-header strong{ display: block; font-size: .92rem; }
.chat-header span{ display: block; font-size: .76rem; color: var(--muted); margin-top: 2px; }

.chat-messages{
  flex: 1;
  overflow-y: auto;
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-msg{
  max-width: 85%;
  padding: 10px 13px;
  border-radius: 12px;
  font-size: .88rem;
  line-height: 1.45;
}
.chat-msg.bot{
  background: var(--surface-2);
  border: 1px solid var(--border);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}
.chat-msg.user{
  background: var(--accent-soft);
  color: var(--text);
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.chat-input-row{
  display: flex;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--border);
}
.chat-input-row input{
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 10px 16px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: .88rem;
}
.chat-input-row input:focus{ outline: none; border-color: var(--accent-light); }
.chat-input-row button{
  width: 40px; height: 40px;
  border-radius: 50%;
  border: none;
  background: var(--accent);
  color: #051425;
  display: grid;
  place-items: center;
  cursor: pointer;
  flex-shrink: 0;
}

/* =========================================================
   RESPONSIVE
========================================================= */
@media (max-width: 900px){
  .hero-inner, .about-inner{ grid-template-columns: 1fr; }
  .hero-media{ order: -1; }
  .skills-grid{ grid-template-columns: repeat(2, 1fr); }
  .projects-grid{ grid-template-columns: 1fr; }
  .services-grid{ grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px){
  .main-nav{ left: 24px; right: 24px; min-width: 0; }
  .btn-nav{ display: none; }
  section{ padding: 64px 0; }
  .project-card{ flex-direction: column; }
}

@media (max-width: 520px){
  .skills-grid{ grid-template-columns: 1fr 1fr; }
  .services-grid{ grid-template-columns: 1fr; }
}