/* Kleen-Net — Styles communs du site */

:root {
  /* Couleurs — specs UI Architecte */
  --color-primary:        #0B4F6C;
  --color-primary-dark:   #073042;
  --color-secondary:      #2ECC9A;
  --color-secondary-dark: #1FA37A;
  --color-background:     #FFFFFF;
  --color-surface:        #F4F8F7;
  --color-text-primary:   #0D1B1E;
  --color-text-secondary: #4A5D61;
  --color-border:         #DDE7E5;
  --color-error:          #D64545;
  --color-success:        #2ECC9A;

  /* Typographie — Manrope (titres) + Karla (texte) */
  --font-family-heading: 'Manrope', sans-serif;
  --font-family-base:    'Karla', sans-serif;
  --font-size-base:      1.0625rem;
  --font-size-sm:        0.875rem;
  --font-size-label:     0.75rem;
  --font-size-h3:        1.5rem;
  --font-size-h2:        2.25rem;
  --font-size-h1:        clamp(2.25rem, 5vw, 3.25rem);
  --line-height-base:    1.6;
  --line-height-tight:   1.1;

  /* Espacement */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Bordures */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --border-width: 1px;

  /* Ombres */
  --shadow-sm: 0 1px 3px rgba(13,27,30,0.08);
  --shadow-md: 0 4px 12px rgba(13,27,30,0.12);
  --shadow-lg: 0 8px 24px rgba(13,27,30,0.16);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;

  /* Breakpoints (référence) */
  --breakpoint-tablet:  768px;
  --breakpoint-desktop: 1024px;
  --container-max:      1200px;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
  background: var(--color-background);
}

h1, h2, h3 {
  font-family: var(--font-family-heading);
  line-height: var(--line-height-tight);
  margin: 0 0 var(--space-4);
  color: var(--color-text-primary);
}

h1 { font-size: var(--font-size-h1); font-weight: 800; }
h2 { font-size: var(--font-size-h2); font-weight: 700; }
h3 { font-size: var(--font-size-h3); font-weight: 600; }

p { margin: 0 0 var(--space-4); color: var(--color-text-secondary); }

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

a { color: var(--color-primary); }

.container {
  box-sizing: border-box;
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6) !important;
  padding-right: var(--space-6) !important;
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--space-8) !important;
    padding-right: var(--space-8) !important;
  }
}

@media (min-width: 1024px) {
  .container {
    padding-left: var(--space-16) !important;
    padding-right: var(--space-16) !important;
  }
}

/* Boutons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-family-base);
  font-weight: 600;
  font-size: var(--font-size-base);
  padding: 14px 28px;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition-fast), transform var(--transition-fast);
}
.btn:active { transform: scale(0.98); }
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

.btn--primary {
  background: var(--color-primary);
  color: #fff;
}
.btn--primary:hover { background: var(--color-primary-dark); }

.btn--secondary {
  background: var(--color-secondary);
  color: var(--color-text-primary);
}
.btn--secondary:hover { background: var(--color-secondary-dark); }

.btn--outline {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn--outline:hover { background: var(--color-primary); color: #fff; }

.btn--disabled { opacity: 0.5; cursor: not-allowed; }
.btn--disabled:hover { transform: none; box-shadow: none; }

/* Bande diagonale — rupture visuelle */
.diagonal-band {
  position: relative;
  background: var(--color-primary);
  color: #fff;
  clip-path: polygon(0 8%, 100% 0, 100% 100%, 0 92%);
  padding: var(--space-16) 0;
}
.diagonal-band h2,
.diagonal-band p { color: #fff; }

/* Header — sticky avec effet de fondu au scroll */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 1);
  transition: background-color var(--transition-base), box-shadow var(--transition-base), backdrop-filter var(--transition-base);
}
.site-header--scrolled {
  background-color: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
}
.site-header__nav a {
  position: relative;
  color: var(--color-text-primary);
  text-decoration: none;
}
.site-header__nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -4px;
  width: 0; height: 2px;
  background: var(--color-secondary-dark);
  transition: width var(--transition-base);
}
.site-header__nav a:hover::after { width: 100%; }

/* Hero — grille décalée 55/45 */
.hero {
  padding: var(--space-12) 0;
}
.hero__grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}
.hero__media {
  flex: 0 0 auto;
  max-width: 260px;
  margin-inline: auto;
}
.hero__media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  animation: hero-media-in 900ms ease both;
}
.hero__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  animation: hero-content-in 900ms 150ms ease both;
}
.hero__content h1 {
  font-size: clamp(2.75rem, 6vw, 4.5rem);
}
.hero__content > p:first-of-type {
  font-size: 1.25rem;
  line-height: 1.55;
}

@keyframes hero-media-in {
  from { opacity: 0; transform: scale(1.04) translateY(12px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
@keyframes hero-content-in {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (min-width: 768px) {
  .hero__grid {
    flex-direction: row;
    align-items: center;
  }
  .hero__media { flex: 0 0 30%; max-width: 320px; margin-inline: 0; }
  .hero__content { flex: 0 0 65%; }
}

/* Accroche signature couleur */
.text-accent { color: var(--color-secondary-dark); }

/* Cartes de service */
.service-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.service-card__media {
  overflow: hidden;
  aspect-ratio: 4 / 3;
}
.service-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 500ms ease;
}
.service-card:hover .service-card__media img { transform: scale(1.08); }
.service-card__body { padding: var(--space-6); }

.service-card--cta {
  background: var(--color-primary);
  color: #fff;
  justify-content: center;
  align-items: flex-start;
  padding: var(--space-6);
  gap: var(--space-3);
  aspect-ratio: 4 / 3;
}
.service-card--cta h3 { color: #fff; }
.service-card--cta p { color: rgba(255,255,255,0.82); }
.service-card--cta:hover { transform: translateY(-6px); }

/* Bandeau CTA flottant (mobile) */
.cta-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  background: #fff;
  box-shadow: 0 -4px 16px rgba(13,27,30,0.15);
  z-index: 50;
}
.cta-bar__item {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 4px;
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-decoration: none;
  color: var(--color-text-primary);
  height: 56px;
  transition: background var(--transition-fast);
}
.cta-bar__item--primary { background: var(--color-primary); color: #fff; }
.cta-bar__item--secondary { background: var(--color-secondary); color: var(--color-text-primary); }

@media (min-width: 1024px) {
  .cta-bar { display: none; }
}

/* Bouton WhatsApp flottant — permanent (desktop/tablette) */
.whatsapp-float {
  display: none;
  align-items: center;
  justify-content: center;
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 60;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  text-decoration: none;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-fast);
  animation: whatsapp-pulse 3200ms ease-in-out infinite;
}
.whatsapp-float svg { width: 32px; height: 32px; display: block; }
.whatsapp-float:hover {
  transform: translateY(-2px) scale(1.05);
  animation-play-state: paused;
}

@keyframes whatsapp-pulse {
  0%, 100% { box-shadow: var(--shadow-md), 0 0 0 0 rgba(37,211,102,0.45); }
  50%      { box-shadow: var(--shadow-md), 0 0 0 12px rgba(37,211,102,0); }
}

@media (min-width: 768px) {
  .whatsapp-float { display: inline-flex; }
}

/* Révélation au défilement */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms ease, transform 700ms ease;
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .hero__media img, .hero__content { animation: none; }
  .whatsapp-float { animation: none; }
}

/* Formulaire de contact */
.form-label {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}
.form-control {
  width: 100%;
  padding: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-control:focus {
  outline: none;
  border-color: var(--color-secondary-dark);
  box-shadow: 0 0 0 3px rgba(46, 204, 154, 0.2);
}
textarea.form-control { resize: vertical; }

/* Back-office */
.admin-shell {
  display: flex;
  min-height: 100vh;
}
.admin-sidebar {
  width: 240px;
  flex-shrink: 0;
  background: var(--color-primary-dark);
  color: #fff;
  padding: var(--space-6) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}
.admin-sidebar__brand {
  font-family: var(--font-family-heading);
  font-weight: 800;
  font-size: 1.25rem;
}
.admin-sidebar nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.admin-sidebar nav a {
  color: rgba(255,255,255,0.82);
  text-decoration: none;
  font-weight: 600;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
}
.admin-sidebar nav a:hover,
.admin-sidebar nav a.is-active {
  background: rgba(255,255,255,0.12);
  color: #fff;
}
.admin-main {
  flex: 1;
  min-width: 0;
  padding: var(--space-8);
  background: var(--color-background);
}

@media (max-width: 767px) {
  .admin-shell { flex-direction: column; }
  .admin-sidebar { width: 100%; flex-direction: row; align-items: center; justify-content: space-between; }
  .admin-sidebar nav { flex-direction: row; }
}

.stat-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}
.stat-card__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}
.stat-card__value {
  font-family: var(--font-family-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
}
.stat-card__value--live {
  color: var(--color-secondary-dark);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.live-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--color-secondary);
  display: inline-block;
  animation: whatsapp-pulse 1800ms ease-in-out infinite;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-background);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.admin-table th, .admin-table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
}
.admin-table th {
  background: var(--color-surface);
  font-weight: 700;
  color: var(--color-text-primary);
}
.admin-table tbody tr:hover { background: var(--color-surface); }

.login-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  padding: var(--space-6);
}
.login-card {
  width: 100%;
  max-width: 400px;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-8);
}

/* Grilles responsives — services et section "Pourquoi nous choisir" */
.services-grid { grid-template-columns: 1fr; }
.pourquoi-grid { flex-direction: column; }

@media (min-width: 768px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .pourquoi-grid { flex-direction: row; align-items: center; }
  .pourquoi-grid > div { flex: 1; }
}
@media (min-width: 1024px) {
  .services-grid { grid-template-columns: repeat(3, 1fr); }
}

/* Retour du formulaire de contact */
.form-feedback {
  min-height: 1.5em;
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}