/* ==========================================================================
   Logy-K — Feuille de style principale
   Conseil & Logiciel — site statique, sans dépendance externe.
   ========================================================================== */

:root {
  /* Palette */
  --color-bg: #ffffff;
  --color-bg-alt: #f4f7fb;
  --color-bg-dark: #0f1c30;
  --color-text: #28323f;
  --color-muted: #5c6a7a;
  --color-primary: #2a5fb0;
  --color-primary-dark: #1f4a8f;
  --color-accent: #f0801f;
  --color-accent-dark: #d96e12;
  --color-grey: #8a929c;
  --color-border: #e2e8f0;
  --color-white: #ffffff;

  /* Typo */
  --font-sans: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;

  /* Espacement & rayons */
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 10px 30px rgba(13, 27, 42, 0.08);
  --shadow-sm: 0 4px 12px rgba(13, 27, 42, 0.06);
  --maxw: 1120px;
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

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

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-primary-dark);
}

h1,
h2,
h3 {
  line-height: 1.2;
  color: var(--color-bg-dark);
  font-weight: 700;
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); }
h3 { font-size: 1.2rem; }

p { color: var(--color-muted); }

/* ------------------------------------------------------------- Layout --- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 5rem 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section__head {
  max-width: 680px;
  margin: 0 auto 3rem;
  text-align: center;
}

.section__head p {
  margin-top: 0.75rem;
  font-size: 1.05rem;
}

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

/* ------------------------------------------------------------ Buttons --- */
.btn {
  display: inline-block;
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn--primary:hover {
  background: var(--color-accent-dark);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* ------------------------------------------------------------- Header --- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-bg-dark);
}

.nav__brand img { height: 60px; }

.nav__links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav__links a:not(.btn) {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
}

.nav__links a:not(.btn):hover,
.nav__links a.is-active:not(.btn) {
  color: var(--color-primary);
}

.nav__cta {
  margin-left: 0.5rem;
}

.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-bg-dark);
  margin: 5px 0;
  transition: var(--transition);
}

/* --------------------------------------------------------------- Hero --- */
.hero {
  background: linear-gradient(160deg, #0f1c30 0%, #163a6b 55%, #1f4a8f 100%);
  color: var(--color-white);
  padding: 5.5rem 0;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(240, 128, 31, 0.32), transparent 70%);
  pointer-events: none;
}

.hero__inner {
  max-width: 720px;
  position: relative;
  z-index: 1;
}

.hero h1 { color: var(--color-white); }

.hero p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.15rem;
  margin: 1.25rem 0 2rem;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* -------------------------------------------------------------- Cards --- */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }

.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.card--featured {
  border: 2px solid var(--color-accent);
  position: relative;
}

.card--featured::before {
  content: "Cœur de métier";
  position: absolute;
  top: -13px;
  left: 1.75rem;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.28rem 0.75rem;
  border-radius: 100px;
}

.card ul {
  list-style: none;
  margin-top: 1rem;
}

.card ul li {
  padding-left: 1.6rem;
  position: relative;
  margin-bottom: 0.55rem;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.card ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--color-white);
}

.card__icon svg { width: 26px; height: 26px; }

.card h3 { margin-bottom: 0.5rem; }

/* ------------------------------------------------------------ Feature --- */
.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.feature__media {
  background: linear-gradient(135deg, #1f4a8f, #2a5fb0);
  border-radius: var(--radius);
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  box-shadow: var(--shadow);
}

.feature ul {
  list-style: none;
  margin-top: 1.25rem;
}

.feature li {
  padding-left: 1.75rem;
  position: relative;
  margin-bottom: 0.75rem;
  color: var(--color-muted);
}

.feature li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

/* --------------------------------------------------------------- Stats --- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  text-align: center;
}

.stat__num {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
}

.stat__label {
  color: var(--color-muted);
  font-size: 0.95rem;
}

/* ---------------------------------------------------------------- CTA --- */
.cta {
  background: linear-gradient(120deg, #1f4a8f, #2a5fb0);
  border-radius: var(--radius);
  padding: 3.5rem;
  text-align: center;
  color: var(--color-white);
}

.cta h2 { color: var(--color-white); }

.cta p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 560px;
  margin: 1rem auto 2rem;
}

/* --------------------------------------------------------------- Form --- */
.form {
  max-width: 640px;
  margin: 0 auto;
  display: grid;
  gap: 1.25rem;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.field label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  color: var(--color-text);
}

.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(31, 111, 235, 0.15);
}

.field textarea { resize: vertical; min-height: 140px; }

.form__note {
  font-size: 0.85rem;
  color: var(--color-muted);
}

.form__status {
  padding: 0.9rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  display: none;
}

.form__status.is-visible { display: block; }
.form__status--ok { background: #e6f6f1; color: #0f7a63; }

/* ------------------------------------------------------------ Contact --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 3rem;
}

.contact-info {
  display: grid;
  gap: 1.5rem;
  align-content: start;
}

.contact-info__item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.contact-info__item svg {
  width: 22px;
  height: 22px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.contact-info__item strong { display: block; color: var(--color-bg-dark); }
.contact-info__item span { color: var(--color-muted); font-size: 0.95rem; }

/* ------------------------------------------------------------- Footer --- */
.footer {
  background: #0e172a;
  color: rgba(255, 255, 255, 0.7);
  padding: 3.5rem 0 1.5rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-white);
  margin-bottom: 0.75rem;
}

.footer__brand img { height: 52px; }

.footer p { color: rgba(255, 255, 255, 0.6); font-size: 0.92rem; }

.footer h4 {
  color: var(--color-white);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.footer ul { list-style: none; }

.footer ul li { margin-bottom: 0.6rem; }

.footer a { color: rgba(255, 255, 255, 0.7); font-size: 0.92rem; }
.footer a:hover { color: var(--color-white); }

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

/* -------------------------------------------------------- Page header --- */
.page-hero {
  background: var(--color-bg-alt);
  padding: 4rem 0;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.page-hero p {
  max-width: 600px;
  margin: 0.75rem auto 0;
  font-size: 1.05rem;
}

/* ---------------------------------------------------------- Responsive --- */
@media (max-width: 860px) {
  .grid--2,
  .grid--3,
  .feature,
  .contact-grid,
  .footer__grid,
  .form__row { grid-template-columns: 1fr; }

  .stats { grid-template-columns: repeat(2, 1fr); }

  .nav__links {
    position: fixed;
    inset: 84px 0 auto 0;
    flex-direction: column;
    background: var(--color-white);
    padding: 1.5rem;
    gap: 1.25rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow);
    transform: translateY(-150%);
    transition: transform 0.3s ease;
  }

  .nav__links.is-open { transform: translateY(0); }

  .nav__toggle { display: block; }

  .cta { padding: 2.5rem 1.5rem; }
}

/* --------------------------------------------------- Illustrations 3D --- */
.illus {
  display: block;
  width: 100%;
  max-width: 270px;
  margin: 0 auto 1.25rem;
}

.showcase-card {
  text-align: center;
}

.feature__media--light {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
}

.feature__media--light img {
  width: 100%;
  max-width: 360px;
}

/* ------------------------------------------------------------ Portrait --- */
.portrait-wrap {
  display: flex;
  justify-content: center;
}

.portrait {
  width: 100%;
  max-width: 340px;
  aspect-ratio: 5 / 6;
  object-fit: cover;
  border-radius: var(--radius);
  border: 5px solid var(--color-white);
  box-shadow: var(--shadow);
  outline: 2px solid var(--color-border);
}

/* -------------------------------------------------------- Avatar rond --- */
.contact-person {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-bottom: 1.5rem;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 15%;
  border: 3px solid var(--color-white);
  box-shadow: var(--shadow-sm);
  outline: 2px solid var(--color-border);
  flex-shrink: 0;
}

.contact-person strong {
  display: block;
  color: var(--color-bg-dark);
}

.contact-person span {
  color: var(--color-muted);
  font-size: 0.92rem;
}