/* ==========================================================================
   CALCAD — feuille de style du site vitrine
   ========================================================================== */

:root {
  --accent: #E8940F;
  --accent-dark: #A6660A;
  --ink: #17130E;
  --text: #1B1712;
  --text-muted: #4A443B;
  --text-faint: #6B6459;
  --text-ghost: #8A8375;
  --paper: #FAF8F3;
  --paper-alt: #F3EFE5;
  --border: #E3DBCB;
  --border-strong: #D8D0C2;
  --white: #FFFFFF;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: 'IBM Plex Sans', Arial, Helvetica, sans-serif;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: 'Space Grotesk', 'Arial Narrow', Arial, sans-serif;
  margin: 0;
  letter-spacing: -0.01em;
}

p { margin: 0; }
img { max-width: 100%; display: block; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); }

.eyebrow {
  font-family: 'IBM Plex Mono', 'Courier New', monospace;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 600;
  font-size: 15px;
  border-radius: 2px;
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}
.btn-primary { background: var(--accent); color: var(--ink); }
.btn-primary:hover { background: var(--accent-dark); color: var(--paper); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border-strong); }
.btn-ghost:hover { border-color: var(--text); color: var(--text); }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(250, 248, 243, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo img { height: 34px; width: auto; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a { color: var(--text); font-weight: 500; font-size: 14px; }

.header-actions { display: flex; align-items: center; gap: 20px; }

.tel-link {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-weight: 500;
  font-size: 14px;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle svg { display: block; }

/* ---------- hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, var(--border) 0, var(--border) 1px, transparent 1px, transparent 48px),
    repeating-linear-gradient(90deg, var(--border) 0, var(--border) 1px, transparent 1px, transparent 48px);
  opacity: 0.5;
}
.hero .container {
  position: relative;
  display: flex;
  align-items: center;
  gap: 64px;
  padding-top: 88px;
  padding-bottom: 88px;
}
.hero-copy { max-width: 520px; display: flex; flex-direction: column; gap: 24px; }
.hero-title { font-size: 46px; line-height: 1.08; font-weight: 700; color: var(--ink); }
.hero-lead { font-size: 17px; line-height: 1.6; color: var(--text-muted); }
.hero-ctas { display: flex; gap: 14px; padding-top: 8px; flex-wrap: wrap; }
.hero-trust {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  margin-top: 8px;
}
.hero-trust span { font-size: 13px; color: var(--text-faint); }
.hero-trust img { height: 22px; width: auto; }

.hero-visual { flex: 1; min-width: 0; position: relative; }
.hero-frame {
  position: relative;
  border: 1px solid var(--ink);
  background: var(--white);
}
.hero-frame img {
  width: 100%;
  aspect-ratio: 16 / 12;
  object-fit: cover;
}
.frame-tick {
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid var(--accent);
}
.frame-tick.tl { top: 0; left: 0; border-right: none; border-bottom: none; }
.frame-tick.tr { top: 0; right: 0; border-left: none; border-bottom: none; }
.frame-tick.bl { bottom: 0; left: 0; border-right: none; border-top: none; }
.frame-tick.br { bottom: 0; right: 0; border-left: none; border-top: none; }
.hero-caption {
  position: absolute;
  bottom: 14px;
  left: 14px;
  right: 14px;
  background: rgba(23, 19, 14, 0.82);
  padding: 10px 14px;
}
.hero-caption span {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--paper-alt);
  letter-spacing: 0.04em;
}

/* ---------- hero checklist ---------- */

.hero-checklist {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 24px;
}
.hero-checklist li {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  font-size: 13.5px;
  color: var(--text);
}
.hero-checklist svg { flex-shrink: 0; color: var(--accent); }

/* ---------- trust bar ---------- */

.trust-bar {
  background: var(--paper-alt);
  border-bottom: 1px solid var(--border);
  padding: 40px 0;
  text-align: center;
}
.trust-bar h2 { font-size: 15px; font-weight: 600; color: var(--ink); margin-bottom: 4px; }
.trust-bar p { font-size: 13px; color: var(--text-faint); margin-bottom: 28px; }
.trust-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}
.trust-logos img { height: 26px; width: auto; opacity: 0.85; }
.trust-wordmark {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--text-faint);
  opacity: 0.85;
}

/* ---------- sections ---------- */

section { padding: 96px 0; }
.section-head { max-width: 640px; display: flex; flex-direction: column; gap: 16px; }
.section-head h2 { font-size: 32px; font-weight: 700; color: var(--ink); }
.section-head p { font-size: 16px; line-height: 1.6; color: var(--text-muted); }
.section-alt { background: var(--paper-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* ---------- méthodologie ---------- */

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.step-card {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.step-number {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--ink);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-card h3 { font-size: 16.5px; font-weight: 600; color: var(--ink); }
.step-card p { font-size: 14px; line-height: 1.6; color: var(--text-muted); }

/* ---------- équipements / livrables ---------- */

.two-col-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}
.info-list { display: flex; flex-direction: column; gap: 20px; margin-top: 8px; }
.info-list li {
  list-style: none;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.info-list .icon-badge {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: var(--paper-alt);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}
.info-list h3 { font-size: 15px; font-weight: 600; color: var(--ink); margin-bottom: 4px; }
.info-list p { font-size: 13.5px; line-height: 1.5; color: var(--text-muted); }

/* ---------- filtres réalisations ---------- */

.filter-pills { display: flex; gap: 10px; flex-wrap: wrap; }
.filter-pill {
  border: 1px solid var(--border-strong);
  background: var(--white);
  color: var(--text-muted);
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 13px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 999px;
  cursor: pointer;
}
.filter-pill.active { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.filter-pill:hover:not(.active) { border-color: var(--text); color: var(--text); }
.portfolio-card[hidden] { display: none; }

/* ---------- services ---------- */

.services-wrap { display: flex; flex-direction: column; gap: 48px; }

.grid-services {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.service-card {
  background: var(--paper);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  border-top: 3px solid var(--accent);
}
.service-card svg { display: block; }
.service-card h3 { font-size: 18px; font-weight: 600; color: var(--ink); }
.service-card p { font-size: 14.5px; line-height: 1.6; color: var(--text-muted); }

/* ---------- réalisations ---------- */

.realisations {
  background: var(--paper-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.realisations-wrap { display: flex; flex-direction: column; gap: 48px; }

.grid-portfolio {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.portfolio-card { background: var(--white); border: 1px solid var(--border); }
.portfolio-img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: #EFEAE0; }
.portfolio-body { padding: 20px; }
.portfolio-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.portfolio-body h3 { font-size: 16px; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.portfolio-body p { font-size: 13.5px; color: var(--text-faint); }

/* ---------- contact ---------- */

.contact-row { display: flex; gap: 72px; }
.contact-info { flex: 1; display: flex; flex-direction: column; gap: 24px; }
.contact-info > p { font-size: 16px; line-height: 1.6; color: var(--text-muted); max-width: 420px; }
.contact-details {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  margin-top: 8px;
}
.contact-details li { display: flex; align-items: center; gap: 12px; list-style: none; }
.contact-details span, .contact-details a { font-size: 14.5px; color: var(--text); }
.contact-details ul { margin: 0; padding: 0; display: flex; flex-direction: column; gap: 18px; }

.contact-form {
  flex: 1;
  background: var(--white);
  border: 1px solid var(--border);
  padding: 36px;
}
.form-grid { display: flex; flex-direction: column; gap: 18px; }
.form-row { display: flex; gap: 14px; }
.form-field { flex: 1; display: flex; flex-direction: column; gap: 6px; }
.form-field label { font-size: 12.5px; font-weight: 600; color: var(--ink); }
.form-field input,
.form-field select,
.form-field textarea {
  border: 1px solid var(--border-strong);
  background: var(--paper);
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  color: var(--text);
  padding: 0 14px;
  height: 42px;
}
.form-field textarea { padding: 10px 14px; height: 104px; resize: vertical; }
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-note { font-size: 13px; color: var(--text-faint); }
.form-note.success { color: #3F7D3F; }
.form-note.error { color: #B4402A; }
.honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ---------- footer ---------- */

.site-footer { border-top: 1px solid var(--border); padding: 40px 0; }
.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-brand { display: flex; align-items: center; gap: 16px; }
.footer-brand img { height: 24px; width: auto; opacity: 0.85; }
.footer-brand span { font-size: 12.5px; color: var(--text-ghost); }
.footer-links { display: flex; gap: 28px; }
.footer-links a { font-size: 13px; color: var(--text-faint); }

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .grid-services { grid-template-columns: 1fr 1fr; }
  .grid-portfolio { grid-template-columns: 1fr 1fr; }
  .steps-grid { grid-template-columns: 1fr 1fr; }
  .two-col-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero .container { flex-direction: column; }
  .hero-copy { max-width: 100%; }
  .hero-checklist { grid-template-columns: 1fr; }
  .contact-row { flex-direction: column; }
  .nav-links { position: absolute; top: 76px; left: 0; right: 0; background: var(--paper); border-bottom: 1px solid var(--border); flex-direction: column; align-items: flex-start; gap: 0; padding: 8px 40px 16px; display: none; }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; padding: 12px 0; border-bottom: 1px solid var(--border); }
  .nav-toggle { display: flex; }
  .tel-link span { display: none; }
}

@media (max-width: 640px) {
  .grid-services { grid-template-columns: 1fr; }
  .grid-portfolio { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .container { padding: 0 20px; }
  .hero-title { font-size: 32px; }
  section { padding: 64px 0; }
  .form-row { flex-direction: column; }
  .contact-form { padding: 24px; }
  .trust-logos { gap: 28px; }
}