/* ==========================================================================
   OLENCE IA — Page services — CSS pur, pas de Tailwind
   Thème clair/sombre automatique via prefers-color-scheme
   ========================================================================== */

/* --- Tokens de couleur fixes -------------------------------------------- */
:root {
  --olence-orange:     #f97316;
  --olence-orange-dim: #ea6100;
  --olence-dark-bg:    #070a12;
  --olence-dark-card:  rgba(255,255,255,0.05);
  --olence-dark-border:rgba(255,255,255,0.10);
  --olence-dark-text:  #ffffff;
  --olence-dark-muted: rgba(255,255,255,0.65);
  --olence-dark-sub:   rgba(255,255,255,0.45);

  --olence-light-bg:   #f5f5f0;
  --olence-light-card: rgba(0,0,0,0.04);
  --olence-light-border:rgba(0,0,0,0.10);
  --olence-light-text: #0d0d0d;
  --olence-light-muted:#3a3a3a;
  --olence-light-sub:  #777777;

  /* valeurs actives (dark par défaut) */
  --bg:     var(--olence-dark-bg);
  --card:   var(--olence-dark-card);
  --border: var(--olence-dark-border);
  --txt:    var(--olence-dark-text);
  --muted:  var(--olence-dark-muted);
  --sub:    var(--olence-dark-sub);
  --bg-img: url('../../assets/background_olence_dark.png');

  /* alias pour usage interne */
  --accent:     var(--olence-orange);
  --accent-dim: var(--olence-orange-dim);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg:     var(--olence-light-bg);
    --card:   var(--olence-light-card);
    --border: var(--olence-light-border);
    --txt:    var(--olence-light-text);
    --muted:  var(--olence-light-muted);
    --sub:    var(--olence-light-sub);
    --bg-img: url('../../assets/background_olence_white.png');
    --accent:     var(--olence-orange);
    --accent-dim: var(--olence-orange-dim);
  }
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Manrope', 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  background-color: var(--bg);
  color: var(--txt);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.65;
}

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

/* --- Background image fixe ---------------------------------------------- */
#olence-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: var(--bg-img) center / cover no-repeat;
}

/* Léger voile pour lisibilité */
#olence-bg::after {
  content: '';
  position: absolute;
  inset: 0;
}

@media (prefers-color-scheme: dark) {
  #olence-bg::after { background: rgba(7,10,18,0.55); }
}

@media (prefers-color-scheme: light) {
  #olence-bg::after { background: rgba(245,245,240,0.50); }
}

/* --- Typographie --------------------------------------------------------- */
.o-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--sub);
  font-weight: 600;
}

.o-eyebrow::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--accent);
}

.o-h1 {
  font-size: clamp(2.4rem, 6vw, 5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--txt);
}

.o-h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--txt);
}

.o-h3 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--txt);
}

.o-lead {
  font-size: clamp(1rem, 2vw, 1.25rem);
  line-height: 1.75;
  color: var(--muted);
  max-width: 60ch;
}

.o-sub { color: var(--sub); font-size: 0.9rem; }

/* --- Couleurs FIXES pour les textes clés --------------------------------- */
.c-orange { color: var(--accent); }
.c-red    { color: #f04040; }
.c-white  { color: #ffffff; }
.c-dark   { color: #0d0d0d; }
.c-txt    { color: var(--txt); }
.c-muted  { color: var(--muted); }

/* --- Layout helpers ------------------------------------------------------ */
.o-container {
  width: 100%;
  max-width: 1100px;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
}

.o-section {
  padding-block: clamp(4rem, 10vw, 8rem);
}

.o-grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr));
  gap: 2rem;
}

.o-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 1.5rem;
}

/* --- Card --------------------------------------------------------------- */
.o-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2rem;
  backdrop-filter: blur(14px);
  transition: border-color 0.25s, transform 0.25s;
}

.o-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

/* --- Badge / pill ------------------------------------------------------- */
.o-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 5px 12px;
  font-size: 12px;
  color: var(--sub);
  background: var(--card);
  letter-spacing: 0.08em;
}

.o-badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

/* --- Boutons ------------------------------------------------------------ */
.o-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: 1px solid var(--border);
  border-radius: 2px;
  font-size: 14px;
  font-weight: 600;
  color: var(--txt);
  background: var(--card);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}

.o-btn:hover {
  border-color: var(--accent);
  background: rgba(249,115,22,0.08);
  transform: translateY(-2px);
}

.o-btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #000;
  font-weight: 800;
}

.o-btn-primary:hover {
  background: var(--accent-dim);
  border-color: var(--accent-dim);
  transform: translateY(-2px);
}

/* --- Skip link ---------------------------------------------------------- */
.o-skip {
  position: absolute;
  left: -999px;
  top: 8px;
  z-index: 200;
  padding: 8px 14px;
  background: #000;
  color: #fff;
  border-radius: 2px;
}

.o-skip:focus { left: 12px; }

/* =========================================================================
   HERO SLIDE
   ========================================================================= */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-block: clamp(5rem, 12vw, 10rem);
}

.hero__logo {
  width: clamp(100px, 20vw, 160px);
  height: auto;
  margin-inline: auto;
  margin-bottom: 2.5rem;
  filter: drop-shadow(0 0 40px rgba(249,115,22,0.30));
  animation: hero-float 4s ease-in-out infinite;
}

@keyframes hero-float {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}

.hero__badge { margin-bottom: 1.75rem; }

.hero__title {
  font-size: clamp(2.4rem, 7vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.04;
  color: var(--txt);
  margin-bottom: 1.5rem;
}

/* Gradient text — couleur fixe */
.hero__title span {
  background: linear-gradient(90deg, #ffffff 0%, var(--accent) 50%, #ffffff 100%);
  background-size: 200%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradient-shift 5s ease infinite;
}

@media (prefers-color-scheme: light) {
  .hero__title span {
    background: linear-gradient(90deg, #0d0d0d 0%, var(--accent-dim) 50%, #0d0d0d 100%);
    background-size: 200%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
}

@keyframes gradient-shift {
  0%,100% { background-position: 0%; }
  50%      { background-position: 100%; }
}

.hero__tagline {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  line-height: 1.7;
  color: var(--muted);
  max-width: 56ch;
  margin-inline: auto;
  margin-bottom: 0.75rem;
}

/* Couleurs FIXES pour le texte d'impact */
.hero__impact {
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  line-height: 1.75;
  color: var(--muted);
  max-width: 60ch;
  margin-inline: auto;
  margin-bottom: 2.5rem;
}

.hero__impact strong { color: var(--txt); }
.hero__impact .stop  { color: #f04040; }
.hero__impact .o-orange { color: var(--accent); }

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

/* Trait déco bas */
.hero__scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--sub);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  animation: fade-in 1.5s 1s both;
}

.hero__scroll-hint span {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--sub), transparent);
}

@keyframes fade-in {
  from { opacity:0; transform: translate(-50%, 12px); }
  to   { opacity:1; transform: translate(-50%, 0); }
}

/* =========================================================================
   SECTION INTRO / PROBLEM
   ========================================================================= */
.intro {
  border-top: 1px solid var(--border);
}

.intro__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

@media (max-width: 700px) {
  .intro__inner { grid-template-columns: 1fr; }
}

.intro__numbers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2rem;
}

.intro__stat {
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.25rem;
  background: var(--card);
}

.intro__stat-n {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.03em;
}

.intro__stat-l {
  font-size: 12px;
  color: var(--sub);
  margin-top: 2px;
}

.intro__img {
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.intro__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.intro__img:hover img { transform: scale(1.04); }

/* =========================================================================
   SECTION SERVICES
   ========================================================================= */
.services {
  border-top: 1px solid var(--border);
}

.services__head { margin-bottom: 3.5rem; }
.services__head .o-h2 { margin-top: 0.6rem; }
.services__head .o-lead { margin-top: 0.75rem; }

.service-card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

.service-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(249,115,22,0.08);
}

.service-card__img {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: rgba(249,115,22,0.04);
}

.service-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.service-card:hover .service-card__img img { transform: scale(1.06); }

.service-card__body {
  padding: 1.75rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.service-card__num {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.service-card__title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--txt);
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.service-card__desc {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--muted);
  flex: 1;
}

.service-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 1.25rem;
}

.service-card__tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 2px;
  color: var(--sub);
}

/* =========================================================================
   SECTION PROJETS RÉALISÉS
   ========================================================================= */
.projects {
  border-top: 1px solid var(--border);
}

.projects__head { margin-bottom: 3rem; }

.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
  gap: 1.5rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 2rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--card);
  text-align: center;
  transition: border-color 0.25s, transform 0.25s;
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.project-card__logo {
  width: 80px;
  height: 80px;
  object-fit: contain;
  border-radius: 4px;
}

.project-card__name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--txt);
}

.project-card__type {
  font-size: 12px;
  color: var(--sub);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* =========================================================================
   SECTION CONTACT CTA
   ========================================================================= */
.cta-section {
  border-top: 1px solid var(--border);
  text-align: center;
}

.cta-section .o-lead {
  margin-inline: auto;
  margin-top: 1rem;
  margin-bottom: 2.5rem;
}

.cta-section__email {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--sub);
  border-bottom: 1px solid var(--border);
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}

.cta-section__email:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* =========================================================================
   FOOTER
   ========================================================================= */
.o-footer {
  border-top: 1px solid var(--border);
  padding-block: 2rem;
}

.o-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.o-footer__copy {
  font-size: 13px;
  color: var(--sub);
}

.o-footer__links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.o-footer__link {
  font-size: 13px;
  color: var(--sub);
  transition: color 0.2s;
}

.o-footer__link:hover { color: var(--accent); }

/* =========================================================================
   DIVIDER
   ========================================================================= */
.o-divider {
  border: none;
  height: 1px;
  background: var(--border);
  margin-block: 0;
}

/* =========================================================================
   ANIMATIONS
   ========================================================================= */
[data-reveal] {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.22,1,0.36,1), transform 0.7s cubic-bezier(0.22,1,0.36,1);
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* =========================================================================
   MOBILE — fond vertical + optimisations (≤ 640 px)
   ========================================================================= */

/* Fond vertical sur mobile */
@media (max-width: 640px) {
  :root {
    --bg-img: url('../../assets/background_olence_vertical_dark.png');
  }
}

@media (max-width: 640px) and (prefers-color-scheme: light) {
  :root {
    --bg-img: url('../../assets/background_olence_vertical_white.png');
  }
}

/* ── Hero mobile ─────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .hero {
    padding-block: clamp(4rem, 18vw, 6rem);
    min-height: 100svh;
  }

  .hero__logo {
    width: 88px;
    margin-bottom: 1.5rem;
  }

  .hero__title {
    font-size: clamp(2rem, 11vw, 2.8rem);
    letter-spacing: -0.03em;
  }

  .hero__tagline {
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
  }

  .hero__impact {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 2rem;
  }

  .hero__cta {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }

  .hero__cta .o-btn {
    justify-content: center;
    padding: 14px 20px;
  }

  .hero__scroll-hint { display: none; }
}

/* ── Intro mobile ────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .intro__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  /* Image en bas sur mobile, moins haute */
  .intro__img {
    max-height: 220px;
    overflow: hidden;
  }

  .intro__img img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    object-position: center top;
  }

  .intro__numbers {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin-top: 1.25rem;
  }

  .intro__stat { padding: 1rem; }

  .intro__stat-n {
    font-size: 1.5rem;
  }
}

/* ── Services mobile ─────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .o-grid-3 {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .service-card__img {
    aspect-ratio: 16 / 7;  /* moins haut sur mobile */
  }

  .service-card__img img {
    height: 100%;
    object-fit: cover;
    object-position: center;
  }

  .service-card__body {
    padding: 1.25rem;
  }

  .service-card__title {
    font-size: 1.05rem;
  }

  .service-card__desc {
    font-size: 0.87rem;
  }
}

/* ── Projets mobile ──────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .projects__grid {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .project-card {
    padding: 1.25rem 1rem;
  }

  .project-card__logo {
    width: 56px;
    height: 56px;
  }

  .project-card__name {
    font-size: 0.9rem;
  }

  .project-card__type {
    font-size: 10px;
  }
}

/* ── CTA mobile ──────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .cta-section {
    text-align: left;
  }

  .cta-section div[style] {
    justify-content: flex-start;
  }

  .cta-section .o-lead {
    margin-inline: 0;
  }
}

/* ── Container / typographie mobile ─────────────────────────────────────── */
@media (max-width: 640px) {
  .o-container { padding-inline: 1.1rem; }
  .o-section   { padding-block: 3rem; }
  .o-h2        { font-size: clamp(1.4rem, 7vw, 1.9rem); }
  .o-lead      { font-size: 0.93rem; }
  .services__head { margin-bottom: 2rem; }
  .projects__head { margin-bottom: 2rem; }
}

/* ── Tablette (641 – 900 px) ─────────────────────────────────────────────── */
@media (min-width: 641px) and (max-width: 900px) {
  .o-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .projects__grid { grid-template-columns: repeat(2, 1fr); }
  .intro__inner { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

/* ── Reduced motion ──────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}