/* ==========================================================================
   Espritech — site vitrine
   Identité imposée par le vrai logo : navy / bleu / or / paper.
   Signature : maillage de nœuds géospatiaux animé (canvas) en écho direct
   à la spécialité H3/PostGIS du studio — pas un effet décoratif générique.
   ========================================================================== */

:root {
  /* ---- Marque (fixe, ne bascule pas avec le thème) ---- */
  --navy: #0B1220;
  --blue: #2E86F0;
  --blue-soft: #5BA3F5;
  --gold: #E8A93C;
  --paper: #F5F3EE;
  --whatsapp: #25D366;
  --blue-rgb: 46, 134, 240;
  --gold-rgb: 232, 169, 60;
  --navy-rgb: 11, 18, 32;
  --paper-rgb: 245, 243, 238;

  /* ---- Thème clair (par défaut) ---- */
  --bg: #F5F3EE;
  --bg-alt: #EFEBE1;
  --card: #FFFFFF;
  --text: #0B1220;
  --text-soft: rgba(11, 18, 32, 0.62);
  --text-soft-2: rgba(11, 18, 32, 0.8);
  --border: rgba(11, 18, 32, 0.12);
  --header-bg: rgba(245, 243, 238, 0.82);
  --mesh-line: rgba(46, 134, 240, 0.16);
  --mesh-node: rgba(46, 134, 240, 0.55);
  --shadow-soft: 0 10px 30px -18px rgba(11, 18, 32, 0.28);

  color-scheme: light;

  --font-display: 'Sora', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --container: 1180px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 10px;
}

:root[data-theme="dark"] {
  --bg: #0B1220;
  --bg-alt: #0E1626;
  --card: #131F33;
  --text: #F5F3EE;
  --text-soft: rgba(245, 243, 238, 0.64);
  --text-soft-2: rgba(245, 243, 238, 0.82);
  --border: rgba(245, 243, 238, 0.14);
  --header-bg: rgba(11, 18, 32, 0.82);
  --mesh-line: rgba(91, 163, 245, 0.22);
  --mesh-node: rgba(91, 163, 245, 0.75);
  --shadow-soft: 0 10px 34px -16px rgba(0, 0, 0, 0.6);
  color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0B1220;
    --bg-alt: #0E1626;
    --card: #131F33;
    --text: #F5F3EE;
    --text-soft: rgba(245, 243, 238, 0.64);
    --text-soft-2: rgba(245, 243, 238, 0.82);
    --border: rgba(245, 243, 238, 0.14);
    --header-bg: rgba(11, 18, 32, 0.82);
    --mesh-line: rgba(91, 163, 245, 0.22);
    --mesh-node: rgba(91, 163, 245, 0.75);
    --shadow-soft: 0 10px 34px -16px rgba(0, 0, 0, 0.6);
    color-scheme: dark;
  }
}

html { background: var(--bg); scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p { margin: 0; }
button { font: inherit; }

.wrap { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.mono { font-family: var(--font-mono); letter-spacing: 0.02em; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--blue); color: white; padding: 12px 20px; z-index: 1000;
}
.skip-link:focus { left: 16px; top: 16px; }

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

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.2s ease;
}
.site-header.scrolled { box-shadow: 0 8px 24px -18px rgba(0,0,0,0.35); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 9px; overflow: hidden;
  display: grid; place-items: center; flex-shrink: 0;
  background: var(--navy);
}
.brand-mark img { width: 100%; height: 100%; object-fit: cover; }
.brand-word { font-family: var(--font-display); font-weight: 700; font-size: 16.5px; letter-spacing: 0.02em; }
.brand-word .tech { color: var(--blue); }
.brand-word.small { font-size: 14px; color: var(--paper); }

.main-nav { display: flex; align-items: center; gap: 30px; }
.main-nav a { font-size: 14.5px; font-weight: 500; color: var(--text-soft-2); transition: color 0.15s ease; }
.main-nav a:hover { color: var(--text); }

.header-actions { display: flex; align-items: center; gap: 12px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px; font-weight: 600; font-size: 14.5px;
  border: 1px solid transparent; cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease, box-shadow .15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--blue); color: white; box-shadow: 0 8px 20px -8px rgba(var(--blue-rgb),0.6); }
.btn-primary:hover { background: #256fd1; }
.btn-ghost { border-color: var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--text-soft-2); }
.btn-small { padding: 10px 18px; font-size: 13.5px; }

.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--card); border: 1px solid var(--border); color: var(--text);
  cursor: pointer; transition: transform .15s ease;
}
.theme-toggle:hover { transform: translateY(-1px); }
.theme-toggle .icon-moon { display: none; }
html[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
html[data-theme="dark"] .theme-toggle .icon-moon { display: block; }
@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) .theme-toggle .icon-sun { display: none; }
  html:not([data-theme="light"]) .theme-toggle .icon-moon { display: block; }
}

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 8px;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--text); }

@media (max-width: 900px) {
  .main-nav {
    display: flex; flex-direction: column; gap: 0;
    position: absolute; top: 70px; left: 0; right: 0;
    background: var(--card); border-bottom: 1px solid var(--border);
    max-height: 0; overflow: hidden; transition: max-height 0.25s ease;
  }
  .main-nav.is-open { max-height: 320px; }
  .main-nav a { padding: 16px 24px; border-top: 1px solid var(--border); }
  .btn.btn-primary.btn-small { display: none; }
  .nav-toggle { display: flex; }
}

/* ==========================================================================
   Hero — signature mesh canvas
   ========================================================================== */
.hero { position: relative; padding: 172px 0 110px; overflow: hidden; }
.mesh-canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.9; }
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 55% at 68% 30%, transparent 0%, var(--bg) 78%);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; max-width: 740px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; font-weight: 600; color: var(--blue);
  text-transform: uppercase; margin: 0 0 18px;
}
.hero-title {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(38px, 6vw, 64px);
  line-height: 1.04; letter-spacing: -0.01em;
  margin: 0 0 22px;
}
.hero-title .accent { color: var(--blue); }
.hero-lede { font-size: 18px; color: var(--text-soft-2); max-width: 570px; margin: 0 0 36px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 52px; }

.hero-pin {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 10px 16px; background: var(--card);
  border: 1px solid var(--border); border-radius: 999px;
  box-shadow: var(--shadow-soft);
}
.pin-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 4px rgba(var(--gold-rgb),0.25); }
.pin-label { font-size: 12px; color: var(--text-soft-2); }

/* ==========================================================================
   Stat strip
   ========================================================================== */
.strip { background: var(--navy); padding: 0; border-top: 1px solid rgba(255,255,255,.08); border-bottom: 1px solid rgba(255,255,255,.08); }
.stat-strip { display: grid; grid-template-columns: repeat(3, 1fr); }
.stat-strip .stat { padding: 30px 24px; text-align: center; border-right: 1px solid rgba(255,255,255,.08); }
.stat-strip .stat:last-child { border-right: none; }
.stat-strip .num {
  font-family: var(--font-display); font-weight: 800; font-size: clamp(1.8rem, 2.6vw, 2.3rem);
  color: var(--paper); display: flex; align-items: baseline; justify-content: center; gap: 2px;
}
.stat-strip .num .suffix { font-size: 0.5em; color: var(--gold); font-family: var(--font-mono); }
.stat-strip .label { margin-top: 6px; font-size: 13px; color: rgba(245,243,238,0.65); }

@media (max-width: 700px) {
  .stat-strip { grid-template-columns: 1fr; }
  .stat-strip .stat { border-right: none; border-bottom: 1px solid rgba(255,255,255,.08); }
  .stat-strip .stat:last-child { border-bottom: none; }
}

/* ==========================================================================
   Sections
   ========================================================================== */
.section { padding: 110px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--navy); color: var(--paper); position: relative; overflow: hidden; }
.section-dark .eyebrow { color: var(--gold); }

.section-head { max-width: 640px; margin: 0 0 52px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(28px, 3.6vw, 40px); margin: 0; letter-spacing: -0.01em;
}
.section-title.light { color: var(--paper); }
.section-sub { margin-top: 14px; font-size: 16px; color: var(--text-soft); }
.section-dark .section-sub { color: rgba(245,243,238,0.7); }

.reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s cubic-bezier(.2,.8,.2,1), transform .6s cubic-bezier(.2,.8,.2,1); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ==========================================================================
   Services
   ========================================================================== */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 38px; box-shadow: var(--shadow-soft);
}
.service-icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: rgba(var(--blue-rgb), 0.1); color: var(--blue);
  display: grid; place-items: center; margin-bottom: 22px;
}
.service-card h3 { font-family: var(--font-display); font-size: 21px; margin: 0 0 12px; }
.service-desc { color: var(--text-soft); font-size: 15px; margin: 0 0 22px; }
.service-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.service-tags li { font-size: 11.5px; padding: 5px 10px; background: var(--bg); border-radius: 6px; color: var(--text-soft-2); }

@media (max-width: 980px) { .services-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .services-grid { grid-template-columns: 1fr; } }

/* ==========================================================================
   Projects — real case-study cards
   ========================================================================== */
.projects-grid { display: flex; flex-direction: column; gap: 22px; }
.project-card {
  display: grid; grid-template-columns: 140px 1fr; gap: 30px;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 34px; box-shadow: var(--shadow-soft);
}
.project-logo {
  width: 100px; height: 100px; border-radius: 20px; overflow: hidden;
  background: var(--navy); display: grid; place-items: center; align-self: start;
}
.project-logo img { width: 100%; height: 100%; object-fit: cover; }
.project-status {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px; font-weight: 700; padding: 5px 11px; border-radius: 999px;
  margin-bottom: 12px;
}
.project-status.live { background: rgba(37,211,102,0.12); color: #127A40; }
.project-status.progress { background: rgba(var(--gold-rgb),0.15); color: #8A5F16; }
.project-status.saas { background: rgba(var(--blue-rgb),0.12); color: #1C5FB3; }
.project-status.delivered { background: var(--border); color: var(--text-soft-2); }
:root[data-theme="dark"] .project-status.live { color: #3fe082; }
:root[data-theme="dark"] .project-status.progress { color: var(--gold); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .project-status.live { color: #3fe082; }
  :root:not([data-theme="light"]) .project-status.progress { color: var(--gold); }
}
.project-card h3 { font-family: var(--font-display); font-size: 25px; margin: 0 0 10px; }
.project-card p { color: var(--text-soft); font-size: 15px; max-width: 640px; margin: 0 0 18px; }
.project-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.project-tags li { font-size: 11px; padding: 5px 10px; border: 1px solid var(--border); border-radius: 6px; color: var(--text-soft-2); font-family: var(--font-mono); }

@media (max-width: 640px) {
  .project-card { grid-template-columns: 1fr; }
  .project-logo { width: 64px; height: 64px; border-radius: 14px; }
}

/* ==========================================================================
   Process
   ========================================================================== */
.process-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.process-step { border-top: 2px solid var(--blue); padding-top: 20px; }
.process-num { display: block; font-size: 13px; color: var(--gold); margin-bottom: 14px; }
.process-step h3 { font-family: var(--font-display); font-size: 17.5px; margin: 0 0 10px; }
.process-step p { font-size: 14px; color: var(--text-soft); margin: 0; }

@media (max-width: 860px) { .process-list { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .process-list { grid-template-columns: 1fr; } }

/* ==========================================================================
   Contact
   ========================================================================== */
.contact-inner { position: relative; z-index: 1; text-align: center; max-width: 640px; margin: 0 auto; }
.contact-lede { color: rgba(245,243,238,0.72); font-size: 17px; margin: 0 auto 48px; max-width: 480px; }
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.contact-item {
  display: flex; flex-direction: column; gap: 8px;
  padding: 22px 16px; border: 1px solid rgba(245,243,238,0.14); border-radius: var(--radius-md);
  transition: border-color 0.15s ease, transform .15s ease;
}
a.contact-item:hover { border-color: var(--blue-soft); transform: translateY(-2px); }
.contact-label { font-size: 11px; color: var(--gold); font-family: var(--font-mono); }
.contact-value { color: var(--paper); font-size: 14.5px; font-weight: 500; }

@media (max-width: 760px) { .contact-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .contact-grid { grid-template-columns: 1fr; } }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { background: var(--navy); border-top: 1px solid rgba(245,243,238,0.1); padding: 26px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.footer-copy { font-size: 12px; color: rgba(245,243,238,0.55); }