/* ===========================================================
   SM Maintenance — Design tokens
   Identité : rouge / noir / blanc (du logo)
   =========================================================== */

:root {
  /* Type scale */
  --text-xs:   clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl:  clamp(2.5rem, 1rem + 4vw, 4.5rem);

  /* Spacing */
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem;
  --space-4: 1rem; --space-5: 1.25rem; --space-6: 1.5rem;
  --space-8: 2rem; --space-10: 2.5rem; --space-12: 3rem;
  --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  /* Couleurs — Rouge SM */
  --color-bg: #ffffff;
  --color-surface: #fafafa;
  --color-surface-2: #f4f4f4;
  --color-surface-offset: #ebebeb;
  --color-border: #e5e5e5;
  --color-divider: #f0f0f0;

  --color-text: #15161a;
  --color-text-muted: #5a5d66;
  --color-text-faint: #9398a3;
  --color-text-inverse: #ffffff;

  /* Rouge du logo */
  --color-primary: #d41616;
  --color-primary-hover: #b00f0f;
  --color-primary-active: #8a0c0c;
  --color-primary-soft: #fdeded;

  --color-dark: #0e0f12;
  --color-dark-2: #1a1b1f;

  /* Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  --transition-interactive: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px rgba(15,16,20,0.06), 0 1px 1px rgba(15,16,20,0.04);
  --shadow-md: 0 4px 16px rgba(15,16,20,0.08);
  --shadow-lg: 0 16px 40px rgba(15,16,20,0.12);
  --shadow-red: 0 12px 32px rgba(212,22,22,0.25);

  --content-narrow: 720px;
  --content-default: 1080px;
  --content-wide: 1240px;

  --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-display: 'Archivo', 'Inter', system-ui, sans-serif;
}

/* ===========================================================
   Layout helpers
   =========================================================== */

.container {
  width: 100%;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding-inline: clamp(var(--space-4), 4vw, var(--space-10));
}

.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
}

.section-dark {
  background: var(--color-dark);
  color: var(--color-text-inverse);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
}

h1, h2 { font-weight: 800; letter-spacing: -0.02em; }
h3 { font-weight: 700; letter-spacing: -0.01em; }

/* ===========================================================
   Header
   =========================================================== */

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-4);
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.brand img {
  height: 44px;
  width: auto;
}
.nav {
  display: flex;
  align-items: center;
  gap: 2.75rem;
}
@media (max-width: 980px) { .nav { gap: 1.75rem; } }
.nav a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  padding: var(--space-2) 0;
  position: relative;
}
.nav a:hover { color: var(--color-primary); }
.nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-interactive);
}
.nav a:hover::after { transform: scaleX(1); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1.5px solid transparent;
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 1px 2px rgba(212,22,22,0.2);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-red);
}
.btn-dark {
  background: var(--color-dark);
  color: white;
}
.btn-dark:hover {
  background: var(--color-primary);
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-ghost:hover {
  border-color: var(--color-text);
  background: var(--color-surface);
}
.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

/* Mobile menu */
.menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text);
}
.menu-btn:hover { background: var(--color-surface-2); }

@media (max-width: 880px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: white;
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-divider);
    box-shadow: var(--shadow-md);
  }
  .menu-btn { display: inline-flex; }
  .header { position: relative; }
}

/* ===========================================================
   Hero
   =========================================================== */

.hero {
  position: relative;
  min-height: clamp(520px, 80vh, 760px);
  background: var(--color-dark);
  color: white;
  overflow: hidden;
  display: flex;
  align-items: center;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.55;
  z-index: 0;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(14,15,18,0.4) 0%, rgba(14,15,18,0.9) 100%);
}
.hero-inner {
  position: relative;
  z-index: 1;
  padding-block: var(--space-20);
  max-width: 880px;
}
.hero h1 {
  font-size: var(--text-3xl);
  line-height: 1.05;
  margin-block: var(--space-5) var(--space-6);
}
.hero h1 .accent {
  color: var(--color-primary);
}
.hero p {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.85);
  max-width: 620px;
  margin-bottom: var(--space-8);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}
.hero .eyebrow { color: #ff5252; }
.hero .eyebrow::before { background: var(--color-primary); }

/* Red curved accent inspired by the logo */
.hero-curve {
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 60%;
  height: 60%;
  background: radial-gradient(ellipse at center, var(--color-primary) 0%, transparent 60%);
  opacity: 0.18;
  z-index: 0;
  pointer-events: none;
}

/* ===========================================================
   Trust strip
   =========================================================== */

.trust {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-divider);
  padding-block: var(--space-6);
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}
.trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.trust-item svg {
  flex-shrink: 0;
  color: var(--color-primary);
}
@media (max-width: 720px) {
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===========================================================
   Services
   =========================================================== */

.section-head {
  max-width: 720px;
  margin-bottom: var(--space-12);
}
.section-head h2 {
  font-size: var(--text-2xl);
  margin-block: var(--space-4) var(--space-4);
}
.section-head p {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}
@media (max-width: 720px) {
  .services-grid { grid-template-columns: 1fr; }
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}
.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
}
.service-card-media {
  aspect-ratio: 4 / 3;
  background: var(--color-surface-2);
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}
.service-card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(14,15,18,0.4) 100%);
}
.service-card-body {
  padding: var(--space-6);
}
.service-card-num {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-2);
}
.service-card h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}
.service-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ===========================================================
   About
   =========================================================== */

.about {
  background: var(--color-surface);
}
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: center;
}
@media (max-width: 880px) {
  .about-grid { grid-template-columns: 1fr; }
}
.about-image {
  aspect-ratio: 4 / 3;
  background-size: cover;
  background-position: center;
  border-radius: var(--radius-lg);
  position: relative;
  box-shadow: var(--shadow-lg);
}
.about-image::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0,0,0,0.06);
  pointer-events: none;
}
.about-content h2 {
  font-size: var(--text-2xl);
  margin-block: var(--space-4) var(--space-5);
}
.about-content > p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}
.about-points {
  display: grid;
  gap: var(--space-3);
  list-style: none;
}
.about-points li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-base);
  font-weight: 500;
}
.check {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

/* ===========================================================
   Intranet / Espace employés
   =========================================================== */

.intranet {
  background: var(--color-dark);
  color: white;
  position: relative;
  overflow: hidden;
}
.intranet::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -10%;
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse at center, var(--color-primary) 0%, transparent 65%);
  opacity: 0.15;
  pointer-events: none;
}
.intranet-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(var(--space-6), 4vw, var(--space-12));
  align-items: center;
  position: relative;
}
@media (max-width: 720px) {
  .intranet-grid { grid-template-columns: 1fr; }
}
.intranet h2 {
  font-size: var(--text-2xl);
  margin-block: var(--space-4) var(--space-5);
}
.intranet p {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.78);
  margin-bottom: var(--space-6);
  max-width: 540px;
}
.intranet .eyebrow { color: #ff7070; }
.intranet .eyebrow::before { background: var(--color-primary); }

.intranet-visual {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  background: var(--color-dark-2);
  border: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.intranet-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(45deg, transparent 48%, rgba(212,22,22,0.5) 49%, rgba(212,22,22,0.5) 51%, transparent 52%),
    linear-gradient(-45deg, transparent 48%, rgba(255,255,255,0.04) 49%, rgba(255,255,255,0.04) 51%, transparent 52%);
  background-size: 24px 24px;
  opacity: 0.5;
}
.intranet-visual svg {
  position: relative;
  width: 64px;
  height: 64px;
  color: var(--color-primary);
}

/* ===========================================================
   Contact
   =========================================================== */

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-10);
}
@media (max-width: 720px) {
  .contact-grid { grid-template-columns: 1fr; }
}
.contact-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  transition: border-color var(--transition-interactive), transform var(--transition-interactive);
}
.contact-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}
.contact-icon {
  display: inline-flex;
  width: 56px;
  height: 56px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}
.contact-card .label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}
.contact-card .value {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  word-break: break-word;
}
.contact-card a.value:hover { color: var(--color-primary); }

/* ===========================================================
   Footer
   =========================================================== */

.footer {
  background: var(--color-dark);
  color: rgba(255,255,255,0.7);
  padding-block: var(--space-12);
  text-align: center;
  font-size: var(--text-sm);
}
.footer-brand {
  margin-bottom: var(--space-5);
  display: flex;
  justify-content: center;
}
.footer-brand img {
  height: 44px;
  width: auto;
  background: white;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
}
.footer-admin-link {
  display: inline-block;
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.4);
}
.footer-admin-link:hover { color: var(--color-primary); }

/* ===========================================================
   Animations on scroll
   =========================================================== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===========================================================
   Gallery
   =========================================================== */
.gallery {
  background: var(--color-surface, #f7f7f8);
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-5);
  margin-top: var(--space-7);
}
.project-card {
  appearance: none;
  background: white;
  border: 1px solid rgba(14,15,18,0.08);
  border-radius: 14px;
  overflow: hidden;
  padding: 0;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: inherit;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  display: flex;
  flex-direction: column;
}
.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px -20px rgba(14,15,18,0.25);
  border-color: rgba(212,22,22,0.25);
}
.project-card:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}
.project-card-media {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background-color: #ececec;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.project-card-placeholder {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  font-size: var(--text-sm);
  color: rgba(14,15,18,0.35);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.project-card-zoom {
  position: absolute;
  right: 12px; bottom: 12px;
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(14,15,18,0.7);
  color: white;
  backdrop-filter: blur(4px);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.project-card:hover .project-card-zoom,
.project-card:focus-visible .project-card-zoom {
  opacity: 1;
  transform: translateY(0);
}
.project-card-body {
  padding: var(--space-4) var(--space-5);
}
.project-card-body h3 {
  font-family: var(--font-display, 'Archivo', sans-serif);
  font-size: var(--text-lg);
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--color-dark);
}
.project-card-body p {
  font-size: var(--text-sm);
  color: rgba(14,15,18,0.65);
  margin: 0;
  line-height: 1.5;
}
.gallery-empty {
  text-align: center;
  color: rgba(14,15,18,0.5);
  font-size: var(--text-sm);
  margin-top: var(--space-5);
}

/* Lightbox */
.lightbox {
  position: fixed; inset: 0;
  background: rgba(14,15,18,0.92);
  z-index: 1000;
  display: grid;
  place-items: center;
  padding: var(--space-5);
  opacity: 0;
  transition: opacity 0.2s ease;
}
.lightbox.is-open { opacity: 1; }
.lightbox[hidden] { display: none !important; }
.lightbox-inner {
  max-width: min(1100px, 95vw);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
}
.lightbox-inner img {
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.lightbox-caption {
  text-align: center;
  color: white;
  max-width: 680px;
}
.lightbox-caption h3 {
  font-family: var(--font-display, 'Archivo', sans-serif);
  font-size: var(--text-xl);
  margin: 0 0 6px;
  font-weight: 700;
}
.lightbox-caption p {
  font-size: var(--text-base);
  color: rgba(255,255,255,0.75);
  margin: 0;
  line-height: 1.55;
}
.lightbox-close {
  position: absolute;
  top: 20px; right: 20px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  color: white;
  display: grid; place-items: center;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}
.lightbox-close:hover {
  background: var(--color-primary);
  transform: scale(1.05);
}