/* =============================================
   VLA MessageUp — Landing Page Styles
   ============================================= */

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

:root {
  --cyan:       #29ABE2;
  --cyan-dark:  #1A8FBF;
  --cyan-light: #E8F6FD;
  --dark:       #111827;
  --dark-2:     #1F2937;
  --gray:       #6B7280;
  --gray-light: #F3F4F6;
  --border:     #E5E7EB;
  --white:      #FFFFFF;
  --radius:     12px;
  --shadow:     0 4px 24px rgba(0,0,0,.08);
  --shadow-lg:  0 8px 40px rgba(0,0,0,.12);
  --transition: .2s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--dark-2);
  background: var(--white);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }

/* ===== TYPOGRAPHIE ===== */
h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); font-weight: 800; line-height: 1.15; color: var(--dark); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 700; line-height: 1.25; color: var(--dark); }
h3 { font-size: 1.4rem; font-weight: 700; color: var(--dark); }
h4 { font-size: 1.05rem; font-weight: 600; color: var(--dark); }
p  { color: var(--gray); line-height: 1.7; }

.highlight { color: var(--cyan); }

/* ===== BOUTONS ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 600; border-radius: 8px;
  text-decoration: none; border: 2px solid transparent;
  cursor: pointer; transition: all var(--transition);
  white-space: nowrap; font-family: inherit;
}
.btn-primary { background: var(--cyan); color: var(--white); }
.btn-primary:hover { background: var(--cyan-dark); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(41,171,226,.35); }
.btn-ghost { background: transparent; color: var(--dark); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); background: var(--cyan-light); }
.btn-sm  { padding: 8px 18px; font-size: .875rem; }
.btn-lg  { padding: 14px 28px; font-size: 1rem; }
.btn-full { width: 100%; justify-content: center; }

/* ===== NAVIGATION ===== */
.nav-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,.9); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.nav-header.scrolled { box-shadow: var(--shadow); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nav-logo img { display: block; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a:not(.btn) { text-decoration: none; color: var(--dark-2); font-weight: 500; font-size: .95rem; transition: color var(--transition); }
.nav-links a:not(.btn):hover { color: var(--cyan); }
.nav-burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-burger span { display: block; width: 24px; height: 2px; background: var(--dark); border-radius: 2px; transition: all var(--transition); }

/* ===== SECTION COMMUNE ===== */
section { padding: 96px 0; }
.section-header { text-align: center; max-width: 680px; margin: 0 auto 60px; }
.section-header p { margin-top: 12px; font-size: 1.1rem; }
.section-header.light h2, .section-header.light p { color: var(--white); }
.section-header.light p { opacity: .8; }

/* ===== HERO ===== */
.hero {
  padding: 140px 0 80px;
  background: linear-gradient(160deg, #F0F9FF 0%, #FFFFFF 60%);
  text-align: center;
}
.hero-inner {
  display: flex; flex-direction: column; align-items: center; gap: 0;
}
.hero-badge {
  display: inline-block; background: var(--cyan-light); color: var(--cyan-dark);
  font-weight: 600; font-size: .8rem; letter-spacing: .08em; text-transform: uppercase;
  padding: 6px 14px; border-radius: 100px; margin-bottom: 20px;
}
.hero h1 { margin-bottom: 20px; max-width: 720px; }
.hero-sub { font-size: 1.1rem; max-width: 580px; margin: 0 auto 36px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 48px; justify-content: center; }
.hero-stats { display: flex; gap: 48px; justify-content: center; margin-bottom: 56px; }
.hero-stat strong { display: block; font-size: 1.8rem; font-weight: 800; color: var(--cyan); }
.hero-stat span { font-size: .85rem; color: var(--gray); }
.hero-visual { width: 100%; max-width: 860px; }
.hero-visual img, .hero-img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow-lg); }

/* ===== SOLUTION (BEFORE / AFTER) ===== */
.solution { background: var(--gray-light); }
.before-after {
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 24px; align-items: center;
}
.before-after-card {
  background: var(--white); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow); text-align: center;
}
.before-after-card img { width: 100%; border-radius: 8px; margin: 16px 0; }
.before-after-card p { font-size: .9rem; }
.before-after-label {
  display: inline-block; font-weight: 700; font-size: .8rem; letter-spacing: .06em;
  text-transform: uppercase; padding: 5px 12px; border-radius: 100px; margin-bottom: 4px;
}
.label-before { background: #FEE2E2; color: #B91C1C; }
.label-after  { background: #D1FAE5; color: #065F46; }
.before-after-arrow { color: var(--cyan); }

/* ===== SECTEURS ===== */
.secteurs-tabs { }
.tab-buttons {
  display: flex; gap: 8px; justify-content: center; margin-bottom: 48px;
}
.tab-btn {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 24px; border: 2px solid var(--border); border-radius: 100px;
  background: var(--white); font-weight: 600; font-size: .95rem; color: var(--gray);
  cursor: pointer; transition: all var(--transition); font-family: inherit;
}
.tab-btn:hover, .tab-btn.active { border-color: var(--cyan); color: var(--cyan); background: var(--cyan-light); }
.tab-content { display: none; }
.tab-content.active { display: block; }
.secteur-inner {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start;
}
.secteur-text h3 { margin-bottom: 12px; }
.secteur-text > p { margin-bottom: 28px; }
.feature-list { list-style: none; display: flex; flex-direction: column; gap: 20px; }
.feature-list li { display: flex; gap: 14px; align-items: flex-start; }
.feature-icon { font-size: 1.4rem; flex-shrink: 0; line-height: 1.4; }
.feature-list strong { display: block; margin-bottom: 2px; color: var(--dark); }
.feature-list p, .feature-list div { font-size: .9rem; }
.secteur-visual img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow-lg); border: 1px solid var(--border); }

/* ===== FONCTIONNALITÉS ===== */
.fonctionnalites { background: var(--dark); }
.fonctionnalites .section-header h2 { color: var(--white); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius); padding: 28px; transition: all var(--transition);
}
.feature-card:hover { background: rgba(255,255,255,.09); border-color: rgba(41,171,226,.4); transform: translateY(-2px); }
.feature-card-icon {
  width: 52px; height: 52px; background: rgba(41,171,226,.15); border-radius: 10px;
  display: flex; align-items: center; justify-content: center; color: var(--cyan); margin-bottom: 18px;
}
.feature-card h4 { color: var(--white); margin-bottom: 10px; }
.feature-card p { color: rgba(255,255,255,.6); font-size: .9rem; }

/* ===== BROADCAST HIGHLIGHT ===== */
.broadcast-card {
  display: flex; gap: 24px; align-items: flex-start;
  background: rgba(41,171,226,.12); border: 1px solid rgba(41,171,226,.3);
  border-radius: var(--radius); padding: 28px 32px; margin-bottom: 40px;
}
.broadcast-icon {
  width: 56px; height: 56px; background: var(--cyan); border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--white); flex-shrink: 0;
}
.broadcast-text h4 { color: var(--white); margin-bottom: 8px; font-size: 1.1rem; }
.broadcast-text p  { color: rgba(255,255,255,.65); font-size: .92rem; }

/* ===== MATÉRIELS SUPPORTÉS ===== */
.materiel { background: var(--white); }
.materiel-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; width: 100%; }
.materiel-subcat { font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--cyan-dark); margin: 12px 0 6px; }
.materiel-subcat:first-child { margin-top: 0; }
.materiel-card {
  background: var(--gray-light); border-radius: var(--radius);
  padding: 24px; border: 1px solid var(--border);
}
.materiel-card-header { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; color: var(--cyan); }
.materiel-card-header h4 { color: var(--dark); font-size: .95rem; }
.materiel-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.materiel-list li {
  font-size: .875rem; color: var(--dark-2); padding: 6px 10px;
  background: var(--white); border-radius: 6px; border: 1px solid var(--border);
}

/* ===== SCREENSHOT STATS ===== */
.screenshot-section { background: var(--cyan-light); }
.screenshot-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.screenshot-text h2 { margin-bottom: 16px; }
.screenshot-text p { margin-bottom: 24px; }
.screenshot-points { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.screenshot-points li { display: flex; align-items: center; gap: 10px; font-size: .95rem; color: var(--dark-2); }
.screenshot-points li::before { content: ''; width: 8px; height: 8px; background: var(--cyan); border-radius: 50%; flex-shrink: 0; }
.screenshot-visual img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow-lg); border: 1px solid var(--border); }

/* ===== RÉFÉRENCES ===== */
.references { background: var(--gray-light); }
.refs-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.ref-card { background: var(--white); border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow); }
.ref-icon { font-size: 2.5rem; margin-bottom: 16px; }
.ref-card h4 { font-size: 1.15rem; margin-bottom: 10px; }
.ref-card p { font-size: .9rem; margin-bottom: 20px; }
.ref-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.ref-tags span {
  background: var(--cyan-light); color: var(--cyan-dark);
  font-size: .78rem; font-weight: 600; padding: 4px 12px; border-radius: 100px;
}

/* ===== CONTACT ===== */
.contact { background: var(--white); }
.contact-inner { display: grid; grid-template-columns: 1fr 1.2fr; gap: 80px; align-items: start; }
.contact-text h2 { margin-bottom: 14px; }
.contact-text > p { margin-bottom: 28px; }
.contact-promises { list-style: none; display: flex; flex-direction: column; gap: 12px; margin-bottom: 36px; }
.contact-promises li { display: flex; align-items: center; gap: 10px; font-weight: 500; color: var(--dark-2); }
.contact-promises svg { color: var(--cyan); flex-shrink: 0; }
.contact-direct p { font-size: .9rem; color: var(--gray); margin-bottom: 6px; }
.contact-email { color: var(--cyan); font-weight: 600; text-decoration: none; font-size: 1rem; }
.contact-email:hover { text-decoration: underline; }
.contact-form-wrap {
  background: var(--gray-light); border-radius: var(--radius); padding: 40px;
}
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-weight: 600; font-size: .875rem; color: var(--dark); }
.form-group input, .form-group select, .form-group textarea {
  padding: 11px 14px; border: 1.5px solid var(--border); border-radius: 8px;
  font-family: inherit; font-size: .95rem; color: var(--dark-2);
  background: var(--white); transition: border-color var(--transition);
  outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--cyan); }
.form-group textarea { resize: vertical; }
.form-success {
  text-align: center; padding: 48px 24px; display: flex; flex-direction: column;
  align-items: center; gap: 16px;
}
.form-success svg { color: var(--cyan); }
.form-success h3 { font-size: 1.4rem; }
.form-success p { max-width: 280px; }

/* ===== FOOTER ===== */
.footer { background: var(--dark); padding: 48px 0; }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 28px; text-align: center; }
.footer-logo img { margin: 0 auto 10px; display: block; }
.footer-logo p { font-size: .875rem; color: rgba(255,255,255,.5); }
.footer-logo a { color: rgba(255,255,255,.7); text-decoration: none; }
.footer-logo a:hover { color: var(--cyan); }
.footer-links { display: flex; gap: 24px; flex-wrap: wrap; justify-content: center; }
.footer-links a { color: rgba(255,255,255,.6); text-decoration: none; font-size: .9rem; transition: color var(--transition); }
.footer-links a:hover { color: var(--cyan); }
.footer-copy p { font-size: .8rem; color: rgba(255,255,255,.3); }

/* ===== RESPONSIVE ===== */
@media (max-width: 960px) {
  .before-after         { grid-template-columns: 1fr; }
  .before-after-arrow   { transform: rotate(90deg); margin: 0 auto; }
  .secteur-inner        { grid-template-columns: 1fr; gap: 32px; }
  .features-grid        { grid-template-columns: 1fr 1fr; }
  .materiel-grid        { grid-template-columns: 1fr 1fr; }
  .screenshot-inner     { grid-template-columns: 1fr; gap: 32px; }
  .refs-grid            { grid-template-columns: 1fr; }
  .contact-inner        { grid-template-columns: 1fr; gap: 40px; }
  .broadcast-card       { flex-direction: column; }
}

@media (max-width: 640px) {
  body                  { overflow-x: hidden; }
  section               { padding: 64px 0; }
  .hero                 { padding: 100px 0 56px; }
  .section-header       { margin-bottom: 40px; }
  .section-header p     { font-size: 1rem; }
  .features-grid        { grid-template-columns: 1fr; }
  .materiel-grid        { grid-template-columns: 1fr; }
  .form-row             { grid-template-columns: 1fr; }
  .tab-buttons          { flex-wrap: wrap; }
  .tab-btn              { flex: 1 1 140px; justify-content: center; }
  .nav-links            { display: none; position: fixed; top: 68px; left: 0; right: 0; bottom: 0; background: var(--white); flex-direction: column; padding: 32px 24px; gap: 20px; overflow-y: auto; }
  .nav-links.open       { display: flex; }
  .nav-burger           { display: flex; }
  .nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-burger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
  .nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero-stats           { flex-wrap: wrap; gap: 20px; justify-content: center; }
  .contact-form-wrap    { padding: 24px; }
  .contact-inner        { gap: 32px; }
}

@media (max-width: 420px) {
  .hero-actions         { flex-direction: column; align-items: stretch; }
  .hero-actions .btn    { justify-content: center; }
  .hero-stats           { gap: 16px; }
  .hero-stat strong     { font-size: 1.5rem; }
}