/* ============================================================
   PORTFOLIO PUBLIC - CSS premium, inspiré HTML5 UP Story
   ============================================================ */

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

:root {
  /* Palette */
  --c-dark:       #0f172a;
  --c-dark-mid:   #1e293b;
  --c-indigo:     #f97316;     /* orange principal */
  --c-indigo-d:   #c2410c;     /* orange foncé - hover */
  --c-indigo-l:   #fff7ed;     /* orange très clair - fonds */
  --c-white:      #ffffff;
  --c-off-white:  #f8fafc;
  --c-gray:       #f1f5f9;
  --c-border:     #e2e8f0;
  --c-text:       #1e293b;
  --c-muted:      #64748b;
  --c-accent:     #f59e0b;     /* ambre - second accent */

  /* Typographie */
  --font-sans:    'Inter', system-ui, -apple-system, sans-serif;
  --font-serif:   'Cormorant Garamond', 'Georgia', serif;

  /* Espacements */
  --section-py: 100px;
  --container:  1140px;

  /* Animations */
  --ease-out:  cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--c-text);
  background: var(--c-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a   { color: inherit; text-decoration: none; }

/* ── Utilitaires ──────────────────────────────────────────── */
.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 40px;
}

.section-label {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-indigo);
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  line-height: 1.15;
  color: var(--c-dark);
  letter-spacing: -.02em;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--c-muted);
  margin-top: 14px;
  max-width: 560px;
}

/* Reveal animation */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
}
[data-reveal].revealed {
  opacity: 1;
  transform: none;
}
[data-reveal-delay="1"] { transition-delay: .1s; }
[data-reveal-delay="2"] { transition-delay: .2s; }
[data-reveal-delay="3"] { transition-delay: .3s; }
[data-reveal-delay="4"] { transition-delay: .4s; }
[data-reveal-delay="5"] { transition-delay: .5s; }
[data-reveal-delay="6"] { transition-delay: .6s; }

/* ── Navigation ───────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  padding: 20px 0;
  transition: background .3s, padding .3s, box-shadow .3s;
}
.nav.scrolled {
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 12px 0;
  box-shadow: 0 1px 0 rgba(0,0,0,.06);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 40px;
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--c-white);
  transition: color .3s;
  letter-spacing: -.01em;
}
.nav.scrolled .nav-logo { color: var(--c-dark); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}
.nav-links a {
  font-size: .85rem;
  font-weight: 500;
  color: rgba(255,255,255,.8);
  transition: color .2s;
  letter-spacing: .01em;
}
.nav-links a:hover { color: var(--c-white); }
.nav.scrolled .nav-links a { color: var(--c-muted); }
.nav.scrolled .nav-links a:hover { color: var(--c-dark); }

.nav-cta {
  font-size: .82rem;
  font-weight: 600 !important;
  padding: 8px 20px;
  border-radius: 6px;
  background: rgba(255,255,255,.12) !important;
  border: 1px solid rgba(255,255,255,.25);
  color: var(--c-white) !important;
  transition: background .2s, border-color .2s !important;
}
.nav-cta:hover { background: rgba(255,255,255,.22) !important; }
.nav.scrolled .nav-cta {
  background: var(--c-indigo) !important;
  border-color: var(--c-indigo) !important;
  color: var(--c-white) !important;
}
.nav.scrolled .nav-cta:hover { background: var(--c-indigo-d) !important; }

/* Burger */
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.nav-burger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--c-white);
  border-radius: 2px;
  transition: background .3s;
}
.nav.scrolled .nav-burger span { background: var(--c-dark); }

/* Menu mobile */
.nav-mobile {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--c-dark);
  z-index: 499;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  font-size: 1.5rem;
  font-family: var(--font-serif);
  color: var(--c-white);
  font-weight: 500;
}
.nav-mobile a:hover { color: var(--c-indigo); }
.nav-close-btn {
  position: absolute;
  top: 24px; right: 28px;
  background: none; border: none;
  color: var(--c-white); font-size: 1.8rem;
  cursor: pointer;
}

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  background:
    linear-gradient(160deg, #0f172a 0%, #1a0d02 60%, #431407 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding: 120px 40px 100px;
}

/* Fond décoratif - orbes */
.hero::before,
.hero::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .4;
  pointer-events: none;
}
.hero::before {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #f97316, transparent 70%);
  top: -100px; left: -100px;
}
.hero::after {
  width: 500px; height: 500px;
  background: radial-gradient(circle, #f59e0b, transparent 70%);
  bottom: -80px; right: -60px;
}

.hero-content { position: relative; z-index: 1; max-width: 760px; }

.hero-eyebrow {
  display: inline-block;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(255,255,255,.55);
  margin-bottom: 24px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -.03em;
  color: var(--c-white);
  margin-bottom: 10px;
}

.hero-subtitle {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 3vw, 1.9rem);
  font-weight: 400;
  color: rgba(255,255,255,.6);
  font-style: italic;
  margin-bottom: 28px;
}

.hero-description {
  font-size: 1.05rem;
  color: rgba(255,255,255,.65);
  max-width: 540px;
  margin: 0 auto 44px;
  line-height: 1.75;
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--c-indigo);
  color: var(--c-white);
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 600;
  letter-spacing: .01em;
  transition: background .2s, transform .2s;
  border: 1px solid transparent;
}
.btn-hero-primary:hover { background: var(--c-indigo-d); transform: translateY(-1px); }

.btn-hero-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: transparent;
  color: rgba(255,255,255,.85);
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 500;
  border: 1px solid rgba(255,255,255,.2);
  transition: background .2s, border-color .2s, transform .2s;
}
.btn-hero-secondary:hover {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.4);
  transform: translateY(-1px);
}

/* Scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.35);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  animation: bounce 2.2s infinite;
}
.hero-scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,.35), transparent);
}
@keyframes bounce {
  0%,100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(8px); }
}

/* ── Section About ────────────────────────────────────────── */
.section-about {
  padding: var(--section-py) 0;
  background: var(--c-white);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: center;
}
.about-text-block .section-subtitle { max-width: none; }

.about-meta {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.about-meta-item {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: .9rem;
  color: var(--c-muted);
}
.about-meta-icon {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: var(--c-indigo-l);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.about-meta-item a { color: var(--c-indigo); font-weight: 500; }
.about-meta-item a:hover { text-decoration: underline; }

.about-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.about-kpi {
  background: var(--c-gray);
  border-radius: 14px;
  padding: 28px 24px;
  border: 1px solid var(--c-border);
}
.about-kpi:first-child {
  background: var(--c-dark);
  color: var(--c-white);
  border-color: transparent;
}
.kpi-value {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 600;
  line-height: 1;
  margin-bottom: 6px;
}
.about-kpi:first-child .kpi-value { color: var(--c-white); }
.kpi-label { font-size: .82rem; color: var(--c-muted); }
.about-kpi:first-child .kpi-label { color: rgba(255,255,255,.5); }

/* ── Section Expertises ───────────────────────────────────── */
.section-expertises {
  padding: var(--section-py) 0;
  background: var(--c-gray);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}
.expertises-header { text-align: center; margin-bottom: 60px; }
.expertises-header .section-subtitle { margin-inline: auto; }

.expertises-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.expertise-card {
  background: var(--c-white);
  border-radius: 14px;
  padding: 32px 28px;
  border: 1px solid var(--c-border);
  transition: transform .25s var(--ease-out), box-shadow .25s var(--ease-out), border-color .25s;
  position: relative;
  overflow: hidden;
}
.expertise-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--card-color, var(--c-indigo));
  opacity: 0;
  transition: opacity .25s;
}
.expertise-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,.08);
  border-color: transparent;
}
.expertise-card:hover::before { opacity: 1; }

.expertise-icon {
  font-size: 2rem;
  margin-bottom: 18px;
  display: block;
}
.expertise-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--c-dark);
}
.expertise-desc {
  font-size: .875rem;
  color: var(--c-muted);
  line-height: 1.65;
}

/* ── Section Projets ──────────────────────────────────────── */
.section-projects {
  padding: var(--section-py) 0;
  background: var(--c-white);
}
.projects-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 52px;
  gap: 20px;
  flex-wrap: wrap;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.project-card {
  border-radius: 14px;
  border: 1px solid var(--c-border);
  background: var(--c-white);
  overflow: hidden;
  transition: transform .3s var(--ease-out), box-shadow .3s var(--ease-out);
  display: flex;
  flex-direction: column;
}
.project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 40px rgba(15,23,42,.1);
}
.project-card.featured {
  border-color: var(--c-indigo);
  box-shadow: 0 0 0 1px var(--c-indigo);
}

/* Badge featured */
.project-card.featured .project-img-wrap::after {
  content: '★ Featured';
  position: absolute;
  top: 14px; left: 14px;
  background: var(--c-indigo);
  color: #fff;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .06em;
  padding: 4px 10px;
  border-radius: 20px;
}

.project-img-wrap {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--c-gray);
}
.project-img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s var(--ease-out);
}
.project-card:hover .project-img-wrap img { transform: scale(1.04); }

.project-img-placeholder {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem;
  color: var(--c-border);
  background: var(--c-gray);
}

/* Overlay au hover */
.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15,23,42,.8);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  opacity: 0;
  transition: opacity .3s;
}
.project-card:hover .project-overlay { opacity: 1; }

.overlay-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 7px;
  font-size: .82rem;
  font-weight: 600;
  transition: transform .2s;
  border: none;
  cursor: pointer;
}
.overlay-btn:hover { transform: translateY(-1px); }
.overlay-btn-primary  { background: var(--c-indigo); color: #fff; }
.overlay-btn-outline  { background: rgba(255,255,255,.1); color: #fff; border: 1px solid rgba(255,255,255,.25); }

.project-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.project-category {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--c-indigo);
}
.project-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--c-dark);
  line-height: 1.3;
}
.project-desc {
  font-size: .875rem;
  color: var(--c-muted);
  line-height: 1.6;
  flex: 1;
}
.project-stacks {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}
.stack-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: .72rem;
  font-weight: 500;
  background: var(--c-gray);
  color: var(--c-muted);
  border: 1px solid var(--c-border);
}
.project-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--c-border);
  display: flex;
  gap: 10px;
  align-items: center;
}
.project-year { font-size: .78rem; color: var(--c-muted); margin-left: auto; }

/* Boutons projet (pied de card) */
.btn-project {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: .8rem;
  font-weight: 600;
  transition: background .18s, border-color .18s;
  border: 1px solid var(--c-border);
  color: var(--c-text);
  background: transparent;
  cursor: pointer;
}
.btn-project:hover { background: var(--c-gray); }
.btn-project.primary {
  background: var(--c-indigo);
  color: #fff;
  border-color: var(--c-indigo);
}
.btn-project.primary:hover { background: var(--c-indigo-d); border-color: var(--c-indigo-d); }

/* ── Section Méthode ──────────────────────────────────────── */
.section-method {
  padding: var(--section-py) 0;
  background: var(--c-dark);
  color: var(--c-white);
}
.method-header { text-align: center; margin-bottom: 72px; }
.method-header .section-label { color: rgba(249,115,22,.9); }
.method-header .section-title { color: var(--c-white); }
.method-header .section-subtitle { color: rgba(255,255,255,.5); margin-inline: auto; }

.method-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2px;
  border: 1px solid rgba(255,255,255,.06);
  border-radius: 16px;
  overflow: hidden;
}

.method-step {
  padding: 36px 32px;
  border: 1px solid rgba(255,255,255,.06);
  background: rgba(255,255,255,.02);
  transition: background .25s;
  position: relative;
}
.method-step:hover { background: rgba(249,115,22,.08); }

.method-step-num {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  font-weight: 600;
  color: rgba(255,255,255,.06);
  line-height: 1;
  position: absolute;
  top: 20px; right: 24px;
}
.method-step-icon  { font-size: 1.6rem; margin-bottom: 14px; }
.method-step-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-white);
  margin-bottom: 10px;
}
.method-step-desc  {
  font-size: .86rem;
  color: rgba(255,255,255,.5);
  line-height: 1.65;
}

/* ── Section Contact / CTA ────────────────────────────────── */
.section-contact {
  padding: var(--section-py) 0;
  background: var(--c-white);
  text-align: center;
}
.contact-inner { max-width: 600px; margin-inline: auto; }
.contact-inner .section-title { margin-bottom: 16px; }
.contact-inner .section-subtitle { margin-inline: auto; margin-bottom: 40px; }

.contact-email-link {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  font-weight: 500;
  color: var(--c-indigo);
  border-bottom: 2px solid var(--c-indigo-l);
  padding-bottom: 4px;
  transition: color .2s, border-color .2s;
  margin-bottom: 36px;
}
.contact-email-link:hover { color: var(--c-indigo-d); border-color: var(--c-indigo); }

.contact-socials {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
.social-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: .85rem;
  font-weight: 500;
  border: 1px solid var(--c-border);
  color: var(--c-muted);
  transition: border-color .18s, color .18s, background .18s;
}
.social-link:hover { border-color: var(--c-indigo); color: var(--c-indigo); background: var(--c-indigo-l); }

/* ── Footer ───────────────────────────────────────────────── */
.footer {
  padding: 32px 0;
  background: var(--c-dark);
  color: rgba(255,255,255,.4);
  text-align: center;
  font-size: .82rem;
}

/* ── Page "En construction" ───────────────────────────────── */
.construction-page {
  min-height: 100vh;
  background: linear-gradient(150deg, #0f172a 0%, #1c0d02 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  position: relative;
  overflow: hidden;
}
.construction-page::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 30%, rgba(249,115,22,.2) 0%, transparent 100%),
    radial-gradient(ellipse 40% 40% at 80% 70%, rgba(245,158,11,.15) 0%, transparent 100%);
  pointer-events: none;
}
.construction-inner {
  position: relative;
  text-align: center;
  max-width: 520px;
}
.construction-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid rgba(249,115,22,.4);
  background: rgba(249,115,22,.1);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(253,186,116,.9);
  margin-bottom: 32px;
}
.construction-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 600;
  color: var(--c-white);
  line-height: 1.1;
  letter-spacing: -.02em;
  margin-bottom: 20px;
}
.construction-subtitle {
  font-size: 1.1rem;
  color: rgba(255,255,255,.5);
  margin-bottom: 12px;
  font-style: italic;
  font-family: var(--font-serif);
}
.construction-message {
  font-size: .9rem;
  color: rgba(255,255,255,.4);
  line-height: 1.75;
  margin-bottom: 40px;
}
.construction-contact {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: rgba(249,115,22,.15);
  border: 1px solid rgba(249,115,22,.3);
  border-radius: 10px;
  color: rgba(253,186,116,.95);
  font-size: .9rem;
  font-weight: 500;
  transition: background .2s, border-color .2s;
}
.construction-contact:hover {
  background: rgba(249,115,22,.25);
  border-color: rgba(249,115,22,.5);
}
/* Orbe décoratif animé */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  animation: float 8s ease-in-out infinite;
  pointer-events: none;
}
.orb-1 { width:400px;height:400px;background:rgba(249,115,22,.15);top:-100px;left:-100px;animation-delay:0s; }
.orb-2 { width:300px;height:300px;background:rgba(245,158,11,.1);bottom:-80px;right:-80px;animation-delay:-3s; }
@keyframes float {
  0%,100% { transform: translateY(0) scale(1); }
  50%      { transform: translateY(-20px) scale(1.03); }
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 1024px) {
  :root { --section-py: 80px; }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-visual { order: -1; }
}

@media (max-width: 768px) {
  :root { --section-py: 64px; }
  .container { padding-inline: 20px; }

  .nav-links { display: none; }
  .nav-burger { display: flex; }

  .hero  { padding: 100px 20px 80px; }
  .hero-btns { flex-direction: column; align-items: center; }
  .btn-hero-primary,
  .btn-hero-secondary { width: 100%; max-width: 300px; justify-content: center; }

  .projects-header { flex-direction: column; align-items: flex-start; }
  .projects-grid   { grid-template-columns: 1fr; }
  .expertises-grid { grid-template-columns: 1fr; }
  .method-grid     { grid-template-columns: 1fr; }
  .about-visual    { grid-template-columns: 1fr 1fr; }

  .nav-inner { padding-inline: 20px; }
}

@media (max-width: 480px) {
  .about-visual { grid-template-columns: 1fr; }
  .hero-title   { font-size: 2.4rem; }
  .contact-socials { flex-direction: column; }
}