/* ============================================================
   GROUPE CICIO — Design System
   Couverture · Charpente · Zinguerie
   ============================================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Outfit:wght@400;500;600;700;800&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Brand palette — derived from business card */
  --brand-red:    #D42B2B;
  --brand-blue:   #2B7BD4;
  --brand-yellow: #F0C418;
  --brand-dark:   #0F1419;
  --brand-slate:  #1A2332;

  /* Neutral scale */
  --gray-50:  #F8FAFC;
  --gray-100: #F1F5F9;
  --gray-200: #E2E8F0;
  --gray-300: #CBD5E1;
  --gray-400: #94A3B8;
  --gray-500: #64748B;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1E293B;
  --gray-900: #0F172A;

  /* Semantic */
  --accent:        var(--brand-blue);
  --accent-hover:  #1E6BC4;
  --cta:           var(--brand-red);
  --cta-hover:     #B82424;
  --highlight:     var(--brand-yellow);

  /* Surfaces */
  --surface-primary:   var(--brand-dark);
  --surface-card:      rgba(26, 35, 50, 0.7);
  --surface-elevated:  rgba(30, 41, 59, 0.85);

  /* Text */
  --text-primary:   #F1F5F9;
  --text-secondary: #94A3B8;
  --text-muted:     #64748B;

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body:    'Inter', sans-serif;

  /* Spacing */
  --section-padding: clamp(3rem, 8vw, 6rem) clamp(1rem, 5vw, 4rem);

  /* Borders & Radius */
  --radius-sm:  0.5rem;
  --radius-md:  0.75rem;
  --radius-lg:  1rem;
  --radius-xl:  1.5rem;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 200ms var(--ease-out);
  --transition-base: 350ms var(--ease-out);
  --transition-slow: 600ms var(--ease-out);

  /* Shadows */
  --shadow-card: 0 4px 24px rgba(0,0,0,0.25);
  --shadow-elevated: 0 8px 40px rgba(0,0,0,0.35);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 64px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

section[id] {
  scroll-margin-top: 64px;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--text-primary);
  background: var(--surface-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* ---------- Utility ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2rem);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.section-label::before {
  content: '';
  width: 2rem;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 600px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--cta);
  color: #fff;
  box-shadow: 0 4px 16px rgba(212, 43, 43, 0.35);
}

.btn-primary:hover {
  background: var(--cta-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(212, 43, 43, 0.45);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--gray-600);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn-whatsapp {
  background: #25D366;
  color: #fff;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
  background: #1EBE5A;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.45);
}

/* ---------- Header / Navbar ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 64px;
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.navbar.scrolled {
  background: rgba(15, 20, 25, 0.96);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.navbar-brand .logo-icon {
  width: 2.25rem;
  height: 2.25rem;
}

.navbar-brand .brand-text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.navbar-brand .brand-text span {
  color: var(--brand-red);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
  transition: width var(--transition-fast);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  display: none;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(15, 20, 25, 0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.mobile-menu.active {
  opacity: 1;
  pointer-events: all;
}

.mobile-menu a {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.mobile-menu a:hover {
  color: var(--text-primary);
}

.mobile-menu-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.75rem;
  cursor: pointer;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.3) saturate(0.8);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(15, 20, 25, 0.85) 0%,
    rgba(15, 20, 25, 0.5) 50%,
    rgba(15, 20, 25, 0.75) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: var(--section-padding);
  max-width: 700px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(43, 123, 212, 0.15);
  border: 1px solid rgba(43, 123, 212, 0.3);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.8s var(--ease-out) both;
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  animation: fadeInUp 0.8s 0.15s var(--ease-out) both;
}

.hero h1 .accent {
  color: var(--brand-red);
}

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

.hero-description {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 540px;
  animation: fadeInUp 0.8s 0.3s var(--ease-out) both;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  animation: fadeInUp 0.8s 0.45s var(--ease-out) both;
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  animation: fadeInUp 0.8s 0.6s var(--ease-out) both;
}

.hero-stat .stat-number {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--highlight);
}

.hero-stat .stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

/* ---------- Services ---------- */
.services {
  padding: var(--section-padding);
}

.services-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.services-header .section-subtitle {
  margin: 0 auto;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.service-card {
  position: relative;
  background: var(--surface-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition-base);
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-blue), var(--brand-red));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255,255,255,0.1);
  box-shadow: var(--shadow-elevated);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  margin-bottom: 1.25rem;
  font-size: 1.5rem;
}

.service-card:nth-child(1) .service-icon {
  background: rgba(212, 43, 43, 0.12);
  color: var(--brand-red);
}

.service-card:nth-child(2) .service-icon {
  background: rgba(43, 123, 212, 0.12);
  color: var(--brand-blue);
}

.service-card:nth-child(3) .service-icon {
  background: rgba(240, 196, 24, 0.12);
  color: var(--highlight);
}

.service-card h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.service-features {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.service-features li {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.service-features li::before {
  content: '✓';
  color: var(--accent);
  font-weight: 700;
  font-size: 0.75rem;
}

/* ---------- Engagements (Trust) ---------- */
.engagements {
  padding: var(--section-padding);
  background: linear-gradient(180deg, transparent 0%, rgba(26,35,50,0.3) 100%);
}

.engagements-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.engagement-card {
  text-align: center;
  padding: 2rem 1.25rem;
  background: var(--surface-card);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.engagement-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255,255,255,0.1);
}

.engagement-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.engagement-card h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.engagement-card p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ---------- Réalisations (Gallery) ---------- */
.realisations {
  padding: var(--section-padding);
}

.realisations-header {
  text-align: center;
  margin-bottom: 3rem;
}

.realisations-header .section-subtitle {
  margin: 0 auto;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 280px;
  cursor: pointer;
  background: var(--surface-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    0deg,
    rgba(15,20,25,0.85) 0%,
    transparent 60%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.25rem;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-overlay span {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
}

.gallery-overlay small {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* ---------- Contact / CTA ---------- */
.contact {
  padding: clamp(2rem, 4vh, 3rem) clamp(1rem, 5vw, 4rem);
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact > .container {
  width: 100%;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  background: var(--surface-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-xl);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  box-shadow: var(--shadow-card);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-info .section-title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  margin-bottom: 0.15rem;
}

.contact-info .section-subtitle {
  font-size: 0.9rem;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.25rem;
}

.contact-method {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.contact-method-icon {
  width: 2rem;
  height: 2rem;
  min-width: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(43, 123, 212, 0.1);
  color: var(--accent);
  font-size: 0.95rem;
}

.contact-method-text h4 {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.1rem;
}

.contact-method-text p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.contact-method-text a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.contact-method-text a:hover {
  color: var(--accent);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.form-group label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 0.6rem 0.85rem;
  background: rgba(15, 20, 25, 0.6);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.85rem;
  transition: border-color var(--transition-fast);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 3rem 0 1.5rem;
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
}

.footer-brand span {
  color: var(--brand-red);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.04);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ---------- WhatsApp Floating Button ---------- */
.whatsapp-float {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 900;
  width: 3.5rem;
  height: 3.5rem;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  transition: all var(--transition-fast);
  animation: float 3s ease-in-out infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(37,211,102,0.55);
}

.whatsapp-float svg {
  width: 1.75rem;
  height: 1.75rem;
  fill: #fff;
}

.whatsapp-tooltip {
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: #fff;
  color: #1a1a1a;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.whatsapp-float:hover .whatsapp-tooltip {
  opacity: 1;
}

/* ---------- Animations ---------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.7s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 992px) {
  .services-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

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

  .gallery-grid {
    grid-template-columns: 1fr 1fr;
  }

  .gallery-item {
    height: 240px;
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-cta {
    display: none !important;
  }

  .navbar-brand .brand-text {
    font-size: 1.1rem;
    white-space: nowrap;
  }

  .mobile-toggle {
    display: flex;
  }

  .mobile-menu {
    display: flex;
  }

  .hero h1 {
    font-size: clamp(2rem, 7vw, 2.75rem);
  }

  .hero-stats {
    flex-wrap: nowrap;
    justify-content: space-between;
    gap: 0.75rem;
    width: 100%;
  }

  .hero-stat {
    flex: 1;
    min-width: 0;
  }

  .hero-stat .stat-number {
    font-size: clamp(1.25rem, 5vw, 1.6rem);
    white-space: nowrap;
  }

  .hero-stat .stat-label {
    font-size: clamp(0.7rem, 2.8vw, 0.8rem);
    line-height: 1.25;
  }

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

  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .gallery-item {
    height: 220px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .engagements-grid {
    grid-template-columns: 1fr;
  }

  .engagement-card {
    padding: 1.5rem 1rem;
  }

  .whatsapp-float {
    bottom: 1rem;
    right: 1rem;
    width: 3.25rem;
    height: 3.25rem;
  }
}