/* ==========================================================
   KIRA TECHNOLOGY – style.css
   Palette: #1e4d4d (dark teal) | #007366 (primary) | #5cb889 (accent)
   ========================================================== */

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

:root {
  --primary:       #007366;
  --primary-dark:  #1e4d4d;
  --primary-light: #00917f;
  --accent:        #5cb889;

  --dark:    #0a1f1f;
  --text:    #1a2e2e;
  --text-2:  #4a6464;
  --text-3:  #7a9494;

  --white:   #ffffff;
  --light:   #f2f8f6;
  --light-2: #e4f0ed;

  --radius:    12px;
  --radius-lg: 20px;
  --shadow:    0 4px 24px rgba(0,115,102,.08);
  --shadow-lg: 0 12px 48px rgba(0,115,102,.14);

  --transition: .25s cubic-bezier(.4,0,.2,1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html { scroll-behavior: smooth; font-size: 16px; }

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

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: var(--font); border: none; background: none; }
input, textarea, select { font-family: var(--font); }
ul { list-style: none; }

/* ── Typography ─────────────────────────────────────────── */
h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); }
h3 { font-size: 1.2rem; }

.highlight {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Container ──────────────────────────────────────────── */
.container {
  width: min(1200px, 100% - 3rem);
  margin-inline: auto;
}

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .65rem 1.5rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: .9rem;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  box-shadow: 0 4px 18px rgba(0,115,102,.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,115,102,.45); }
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  background: rgba(255,255,255,.12);
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,.4);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: rgba(255,255,255,.2); border-color: rgba(255,255,255,.7); }

.btn-lg   { padding: .85rem 2rem; font-size: 1rem; }
.btn-full { width: 100%; justify-content: center; }

.btn-loader {
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,.4);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spin .6s linear infinite;
}

/* ── Sections ───────────────────────────────────────────── */
.section   { padding: 5rem 0; }
.bg-light  { background: var(--light); }

.section-tag {
  display: inline-block;
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--primary);
  background: rgba(0,115,102,.08);
  padding: .3rem .85rem;
  border-radius: 50px;
  margin-bottom: 1rem;
}
.section-title { margin-bottom: 1rem; }
.section-intro {
  font-size: 1.05rem;
  color: var(--text-2);
  max-width: 560px;
  margin-inline: auto;
}
.section-header { text-align: center; margin-bottom: 3rem; }

/* ── Pattern path (Logo Project) ───────────────────────── */
:root {
  --pattern: url("assets/Pattern-1.svg");
}

/* ── Scroll Reveal ──────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .65s ease, transform .65s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ==========================================================
   NAVBAR
   ========================================================== */
.navbar {
  position: fixed;
  top: 0; inset-inline: 0;
  z-index: 1000;
  padding: 1.1rem 0;
  transition: background var(--transition), padding var(--transition), box-shadow var(--transition);
}
.navbar.scrolled {
  background: rgba(10,31,31,.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: .75rem 0;
  box-shadow: 0 2px 24px rgba(0,0,0,.3);
}

.nav-container {
  width: min(1200px, 100% - 3rem);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: .65rem;
  flex-shrink: 0;
}
.logo-icon { width: 38px; height: auto; }
.logo-text { font-size: 1rem; color: var(--white); letter-spacing: -.01em; }
.logo-text strong { font-weight: 800; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-left: auto;
}
.nav-link {
  font-size: .88rem;
  font-weight: 500;
  color: rgba(255,255,255,.75);
  transition: color var(--transition);
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: width var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--white); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }

.nav-cta { margin-left: .5rem; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: .4rem;
  margin-left: auto;
  z-index: 1001;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
  transform-origin: center;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================
   HERO
   ========================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--dark);
}

.hero-bg { position: absolute; inset: 0; overflow: hidden; }

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: var(--pattern);
  background-size: 320px;
  background-repeat: repeat;
  opacity: .18;
  z-index: 0;
}

#particles-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  opacity: .6;
}

.hero-shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: floatShape 8s ease-in-out infinite;
}
.hero-shape-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0,115,102,.4), transparent 70%);
  top: -100px; left: -100px;
  animation-delay: 0s;
}
.hero-shape-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(92,184,137,.25), transparent 70%);
  top: 20%; right: -80px;
  animation-delay: -3s;
}
.hero-shape-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(30,77,77,.5), transparent 70%);
  bottom: -50px; left: 40%;
  animation-delay: -6s;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 8rem 0 5rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.15);
  backdrop-filter: blur(8px);
  color: rgba(255,255,255,.85);
  font-size: .8rem;
  font-weight: 500;
  padding: .4rem 1rem;
  border-radius: 50px;
  margin-bottom: 1.5rem;
}
.badge-dot {
  width: 7px; height: 7px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.hero-title {
  color: var(--white);
  margin-bottom: 1.5rem;
  letter-spacing: -.02em;
}

.typed-wrapper { display: inline-block; min-height: 1.2em; }
.typed-text {
  background: linear-gradient(135deg, var(--accent), #a8e6c3);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.typed-cursor {
  color: var(--accent);
  -webkit-text-fill-color: var(--accent);
  animation: blink .8s step-end infinite;
  margin-left: 2px;
}

.hero-subtitle {
  font-size: clamp(.95rem, 2vw, 1.15rem);
  color: rgba(255,255,255,.65);
  max-width: 580px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem; left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}
.scroll-indicator span {
  display: block;
  width: 26px; height: 42px;
  border: 2px solid rgba(255,255,255,.25);
  border-radius: 13px;
  position: relative;
}
.scroll-indicator span::before {
  content: '';
  position: absolute;
  top: 6px; left: 50%;
  transform: translateX(-50%);
  width: 4px; height: 8px;
  background: rgba(255,255,255,.5);
  border-radius: 2px;
  animation: scrollBounce 2s ease-in-out infinite;
}

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

.service-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1.5px solid var(--light-2);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card:hover {
  border-color: var(--primary);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.service-card--featured {
  background: linear-gradient(145deg, #0d2e2e 0%, var(--primary-dark) 50%, var(--primary) 100%);
  color: var(--white);
  border-color: transparent;
  overflow: hidden;
}

/* Pattern overlay sur la carte IA */
.service-card--featured::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: var(--pattern);
  background-size: 180px;
  background-repeat: repeat;
  opacity: .3;
  z-index: 0;
}
.service-card--featured > * { position: relative; z-index: 1; }

/* Texte blanc pur pour garantir la lisibilité */
.service-card.service-card--featured h3 { color: #ffffff; }
.service-card.service-card--featured p  { color: rgba(255,255,255,.92); }
.service-card.service-card--featured .service-tech li {
  background: rgba(255,255,255,.15);
  color: #ffffff;
}
.service-card.service-card--featured .service-icon { background: rgba(255,255,255,.12); color: var(--accent); }

.service-card--cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  background: var(--dark);
  border-color: transparent;
  gap: .75rem;
}
.service-card--cta h3 { color: var(--white); font-size: 1.4rem; }
.service-card--cta p  { color: rgba(255,255,255,.65); font-size: .9rem; }

.service-badge {
  position: absolute;
  top: 1.2rem; right: 1.2rem;
  background: var(--accent);
  color: var(--primary-dark);
  font-size: .7rem;
  font-weight: 700;
  padding: .25rem .65rem;
  border-radius: 50px;
}

.service-icon {
  width: 52px; height: 52px;
  background: var(--light);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--primary);
  transition: var(--transition);
}
.service-icon svg { width: 28px; }
.service-card:not(.service-card--featured):not(.service-card--cta):hover .service-icon {
  background: var(--primary);
  color: var(--white);
}

.service-card h3 { margin-bottom: .65rem; }
.service-card p  { font-size: .88rem; color: var(--text-2); line-height: 1.65; margin-bottom: 1.2rem; }

.service-tech { display: flex; flex-wrap: wrap; gap: .4rem; }
.service-tech li {
  background: var(--light);
  color: var(--primary);
  font-size: .72rem;
  font-weight: 600;
  padding: .25rem .65rem;
  border-radius: 50px;
}

/* ── Bande pattern entre services et contact ────────────── */
.pattern-divider {
  height: 120px;
  background-image: var(--pattern);
  background-size: 200px;
  background-repeat: repeat;
  opacity: .55;
}

/* ==========================================================
   CONTACT
   ========================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 4rem;
  align-items: start;
}

.contact-info h3 { font-size: 1.3rem; margin-bottom: .75rem; }
.contact-info > p { color: var(--text-2); margin-bottom: 2rem; line-height: 1.65; }

.contact-list { display: flex; flex-direction: column; gap: 1.2rem; margin-bottom: 2rem; }
.contact-list li { display: flex; align-items: flex-start; gap: .85rem; }

.contact-icon {
  width: 44px; height: 44px;
  background: var(--light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}
.contact-icon svg { width: 20px; }
.contact-list strong { display: block; font-size: .85rem; margin-bottom: .15rem; }
.contact-list a, .contact-list span { font-size: .88rem; color: var(--text-2); }
.contact-list a:hover { color: var(--primary); }

.contact-form {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  border: 1.5px solid var(--light-2);
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: .4rem; margin-bottom: 1.2rem; }

.form-group label { font-size: .83rem; font-weight: 600; color: var(--text); }
.form-group label span { color: var(--primary); }

.form-group input,
.form-group select,
.form-group textarea {
  padding: .75rem 1rem;
  border: 1.5px solid var(--light-2);
  border-radius: var(--radius);
  font-size: .9rem;
  color: var(--text);
  background: var(--white);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,115,102,.12);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234a6464' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .75rem center;
  background-size: 16px;
  padding-right: 2.5rem;
}

.form-error { font-size: .75rem; color: #e53e3e; min-height: 1em; }
.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea { border-color: #e53e3e; }

.form-success {
  text-align: center;
  color: var(--primary);
  font-weight: 600;
  padding: .75rem;
  background: rgba(0,115,102,.08);
  border-radius: var(--radius);
  margin-top: .75rem;
}

/* ── Social ─────────────────────────────────────────────── */
.social-links { display: flex; gap: .65rem; }
.social-btn {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--light);
  color: var(--text-2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  border: 1.5px solid transparent;
}
.social-btn svg { width: 16px; }
.social-btn:hover { background: var(--primary); color: var(--white); transform: translateY(-2px); }

/* ==========================================================
   FOOTER
   ========================================================== */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,.7);
  padding: 4rem 0 0;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: var(--pattern);
  background-size: 260px;
  background-repeat: repeat;
  opacity: .15;
  pointer-events: none;
  z-index: 0;
}
.footer > .container { position: relative; z-index: 1; }

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.footer-brand p {
  font-size: .85rem;
  line-height: 1.65;
  margin: 1rem 0 1.5rem;
  color: rgba(255,255,255,.5);
}
.footer-brand .logo-text { color: var(--white); }

.footer-col h4 { color: var(--white); font-size: .9rem; margin-bottom: 1.25rem; }
.footer-col ul { display: flex; flex-direction: column; gap: .65rem; margin-bottom: 1.25rem; }
.footer-col li a,
.footer-col li span { font-size: .83rem; color: rgba(255,255,255,.5); transition: color var(--transition); }
.footer-col li a:hover { color: var(--accent); }

.footer-col-cta { margin-top: 1.25rem; }

.footer .social-btn {
  background: rgba(255,255,255,.07);
  color: rgba(255,255,255,.5);
  border-color: rgba(255,255,255,.1);
}
.footer .social-btn:hover { background: var(--primary); color: var(--white); border-color: var(--primary); }

.footer-bottom {
  padding: 1.5rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-bottom p { font-size: .8rem; color: rgba(255,255,255,.35); }
.footer-legal { display: flex; gap: 1.5rem; }
.footer-legal a { font-size: .8rem; color: rgba(255,255,255,.35); transition: color var(--transition); }
.footer-legal a:hover { color: var(--accent); }

/* ==========================================================
   BACK TO TOP
   ========================================================== */
.back-to-top {
  position: fixed;
  bottom: 2rem; right: 2rem;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0,115,102,.4);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 900;
}
.back-to-top.visible { opacity: 1; pointer-events: all; transform: none; }
.back-to-top:hover   { background: var(--primary-light); transform: translateY(-3px); }

/* ==========================================================
   ANIMATIONS
   ========================================================== */
@keyframes floatShape {
  0%, 100% { transform: translateY(0) scale(1); }
  50%       { transform: translateY(-30px) scale(1.05); }
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(92,184,137,.6); }
  50%       { box-shadow: 0 0 0 5px rgba(92,184,137,0); }
}
@keyframes scrollBounce {
  0%    { transform: translateX(-50%) translateY(0);    opacity: 1; }
  100%  { transform: translateX(-50%) translateY(10px); opacity: 0; }
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ==========================================================
   RESPONSIVE
   ========================================================== */

/* ── Tablet (≤ 1024px) ──────────────────────────────────── */
@media (max-width: 1024px) {
  .nav-cta { display: none; }
  .services-grid  { grid-template-columns: repeat(2, 1fr); }
  .contact-grid   { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer-grid    { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer-brand   { grid-column: span 2; }
}

/* ── Mobile (≤ 768px) ───────────────────────────────────── */
@media (max-width: 768px) {
  .section { padding: 3.5rem 0; }

  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    inset: 0 0 0 30%;
    background: rgba(10,31,31,.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    padding: 2rem;
    gap: 2.5rem;
    transform: translateX(100%);
    transition: transform .35s cubic-bezier(.4,0,.2,1);
    z-index: 999;
  }
  .nav-links.open { transform: none; }
  .nav-link { font-size: 1.2rem; }

  .hero-actions { flex-direction: column; align-items: center; }

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

  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 1.5rem; }

  .footer-grid  { grid-template-columns: 1fr; gap: 1.5rem; }
  .footer-brand { grid-column: span 1; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ── Small mobile (≤ 480px) ─────────────────────────────── */
@media (max-width: 480px) {
  :root { font-size: 15px; }
}