/* ==========================================================================
   Troc'Campus — Styles Mobile-First & Desktop Polished
   ========================================================================== */

:root {
  --bg-page: #f8fafc;
  --bg-surface: #ffffff;
  --bg-subtle: #f1f5f9;
  --border: #e2e8f0;
  --border-focus: #059669;

  --text-main: #0f172a;
  --text-muted: #334155;
  --text-subtle: #475569;

  --primary: #047857;
  --primary-hover: #065f46;
  --primary-light: #ecfdf5;

  --badge-don-bg: #dcfce7;
  --badge-don-text: #166534;
  --badge-vente-bg: #dbeafe;
  --badge-vente-text: #1e40af;
  --badge-troc-bg: #fef3c7;
  --badge-troc-text: #92400e;

  --danger: #b91c1c;
  --danger-bg: #fee2e2;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-modal: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

[hidden] {
  display: none !important;
}

body {
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* --------------------------------------------------------------------------
   Bannières (Mise à jour SW & Réconciliation de Conflits 412)
   -------------------------------------------------------------------------- */
.update-banner {
  background-color: #0f172a;
  color: #ffffff;
  padding: 0.6rem 1rem;
  font-size: 0.85rem;
}

.update-banner-inner {
  max-width: 1040px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.conflict-banner {
  background: linear-gradient(90deg, #b45309, #92400e);
  color: #ffffff;
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  box-shadow: 0 4px 6px -1px rgba(146, 64, 14, 0.25);
}

.conflict-banner-inner {
  max-width: 1040px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.conflict-text p {
  font-size: 0.8rem;
  opacity: 0.95;
  margin-top: 0.15rem;
}

.conflict-actions {
  display: flex;
  gap: 0.5rem;
}

.btn-light {
  background: #ffffff;
  color: #0f172a;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.75rem;
  cursor: pointer;
}

.btn-ghost-white {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.4);
  font-weight: 600;
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.75rem;
  cursor: pointer;
}

/* --------------------------------------------------------------------------
   En-tête de navigation Mobile & Desktop
   -------------------------------------------------------------------------- */
.app-header {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 30;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
}

.header-container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0.65rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  color: var(--text-main);
}

.brand-logo {
  border-radius: 6px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: #0f172a;
  letter-spacing: -0.02em;
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-subtle);
  padding: 0.2rem 0.5rem;
  border-radius: 9999px;
  border: 1px solid var(--border);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: #10b981;
  flex-shrink: 0;
}

.status-indicator.off .status-dot {
  background-color: var(--danger);
}

.status-indicator.off .status-text {
  color: var(--danger);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.sync-pill {
  font-size: 0.72rem;
  background-color: #fef3c7;
  color: #92400e;
  padding: 0.15rem 0.45rem;
  border-radius: 9999px;
  font-weight: 600;
  border: 1px solid #fde68a;
  white-space: nowrap;
}

.btn-icon-nav {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  min-width: 44px;
  min-height: 44px;
  padding: 0.5rem;
  font-size: 1.25rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
}

.btn-icon-nav:hover {
  background-color: #e2e8f0;
}

.btn-icon-nav:active {
  transform: scale(0.92);
  background-color: #cbd5e1;
}

.btn-icon-nav.active {
  background-color: var(--primary-light);
  border-color: var(--primary);
}

.btn-install {
  background-color: var(--bg-subtle);
  color: var(--text-main);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.65rem;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.btn-publish {
  white-space: nowrap;
  font-size: 0.85rem;
  padding: 0.45rem 0.85rem;
}

/* --------------------------------------------------------------------------
   Boutons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.55rem 1rem;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease-in-out;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}

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

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-main);
}

.btn-ghost:hover {
  background-color: var(--bg-subtle);
}

.btn-ghost-action {
  background: #ffffff;
  border: 1px solid var(--border);
  color: var(--text-main);
}

.btn-ghost-action:hover {
  background-color: var(--bg-subtle);
}

.btn-outline {
  background: #ffffff;
  border: 1px solid var(--border);
  color: var(--primary);
  font-weight: 600;
}

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

.btn-camera {
  background-color: #ffffff;
  border: 1px solid var(--border);
  color: var(--text-main);
}

.btn-camera:hover {
  background-color: var(--bg-subtle);
}

.btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.8rem;
}

.btn-text-danger {
  background: transparent;
  border: none;
  color: var(--danger);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0.2rem;
}

.btn-text-danger:hover {
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   Contenu Principal & Toolbar
   -------------------------------------------------------------------------- */
.app-main {
  max-width: 1040px;
  margin: 0 auto;
  padding: 1.25rem 1rem 2.5rem;
  width: 100%;
  flex: 1;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.toolbar-heading {
  display: flex;
  flex-direction: column;
}

.page-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.page-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.filter-tabs {
  display: inline-flex;
  background-color: #f1f5f9;
  padding: 3px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.tab {
  background: transparent;
  border: none;
  padding: 0.38rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.tab:hover {
  color: var(--text-main);
}

.tab.active {
  background-color: #ffffff;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

/* --------------------------------------------------------------------------
   Grille d'Annonces
   -------------------------------------------------------------------------- */
.ads-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 1rem;
}

.ad-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  display: flex;
  flex-direction: column;
}

.ad-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.ad-content {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.ad-thumb {
  width: 100%;
  height: 135px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
}

.ad-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.thumb-don { background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%); }
.thumb-vente { background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%); }
.thumb-troc { background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%); }

.thumb-icon {
  font-size: 2.5rem;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.05));
}

.ad-details {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.ad-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.45rem;
}

.badge {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
}

.badge-don { background-color: var(--badge-don-bg); color: var(--badge-don-text); }
.badge-vente { background-color: var(--badge-vente-bg); color: var(--badge-vente-text); }
.badge-troc { background-color: var(--badge-troc-bg); color: var(--badge-troc-text); }

.ad-price {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-main);
}

.price-free { color: var(--primary); }
.price-troc { color: var(--badge-troc-text); }

.ad-title {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.35;
  margin-bottom: 0.35rem;
}

.ad-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin-bottom: 0.75rem;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.ad-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
}

.ad-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.btn-card {
  padding: 0.5rem 0.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  border: 1px solid var(--border);
  text-align: center;
}

.btn-card-contact {
  background-color: var(--primary-light);
  color: var(--primary);
  border-color: #a7f3d0;
}

.btn-card-contact:hover {
  background-color: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

.btn-card-share {
  background-color: #ffffff;
  color: var(--text-muted);
}

.btn-card-share:hover {
  background-color: var(--bg-subtle);
  color: var(--text-main);
}

.btn-card-delete {
  background-color: var(--danger-bg);
  color: var(--danger);
  border-color: #fecaca;
  grid-column: 1 / -1;
  margin-top: 0.35rem;
}

/* --------------------------------------------------------------------------
   Modales Natives (<dialog>) & Mode Bottom Sheet Mobile
   -------------------------------------------------------------------------- */
.modal {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
  background: transparent;
  padding: 1rem;
  z-index: 100;
}

.modal:not([open]) {
  display: none;
}

.modal[open] {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal::backdrop {
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(3px);
}

.modal-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-modal);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalIn 0.18s ease-out;
}

.modal-card-sm {
  max-width: 400px;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.96) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  background-color: #ffffff;
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
}

.modal-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.btn-icon-close {
  background: transparent;
  border: none;
  font-size: 1.1rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
}

.btn-icon-close:hover {
  background-color: var(--bg-subtle);
  color: var(--text-main);
}

.modal-body {
  padding: 1.25rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main);
}

input, select, textarea {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.75rem;
  font-size: 16px; /* Empêche le zoom auto forcé sur iOS */
  color: var(--text-main);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.12);
}

.camera-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: var(--bg-subtle);
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.camera-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* Modal Caméra Dédiée (Viewfinder Plein Écran / Mobile-First) */
.modal-camera-dialog {
  padding: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
}

.camera-fullscreen-box {
  background: #000000;
  width: 100%;
  max-width: 480px;
  height: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-modal);
}

.camera-fullscreen-header {
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.8);
  color: #ffffff;
  z-index: 10;
}

.camera-title {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.btn-camera-icon-close {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: #ffffff;
  font-size: 1.1rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.camera-viewport-area {
  flex: 1;
  position: relative;
  background: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  min-height: 280px;
}

.camera-viewport-area video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.camera-alert-overlay {
  position: absolute;
  inset: 1.5rem;
  background: rgba(15, 23, 42, 0.9);
  color: #f87171;
  border: 1px solid #ef4444;
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 0.9rem;
  line-height: 1.5;
  z-index: 20;
}

.camera-alert-overlay[hidden] {
  display: none !important;
}

.camera-fullscreen-footer {
  padding: 1.25rem 1.5rem 1.75rem;
  background: #000000;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.btn-camera-secondary {
  background: transparent;
  border: none;
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  padding: 0.5rem;
}

.shutter-button {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  border: 4px solid #ffffff;
  background: transparent;
  padding: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.1s ease;
}

.shutter-button:active {
  transform: scale(0.92);
}

.shutter-inner {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: #ffffff;
  display: block;
  transition: background 0.1s;
}

.shutter-button:active .shutter-inner {
  background: #e2e8f0;
}

.photo-placeholder-card {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--bg-surface);
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
}

.photo-placeholder-card .placeholder-icon {
  font-size: 1.25rem;
  opacity: 0.8;
}

.photo-placeholder-card[hidden] {
  display: none !important;
}

.photo-preview-card {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  background: #ffffff;
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.photo-preview-card[hidden] {
  display: none !important;
}

.photo-preview-card img {
  width: 64px;
  height: 64px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.photo-preview-info {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.85rem;
  font-weight: 600;
  flex: 1;
}

.alert-box {
  background-color: var(--danger-bg);
  border: 1px solid #fecaca;
  color: var(--danger);
  font-size: 0.8rem;
  padding: 0.5rem 0.7rem;
  border-radius: var(--radius-sm);
}

.modal-footer {
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  background-color: #ffffff;
}

/* Modal Contact */
.contact-modal-body {
  gap: 1rem;
}

.contact-info-box {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.contact-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
}

.contact-value-row {
  display: flex;
  gap: 0.5rem;
}

.contact-input {
  flex: 1;
  background-color: var(--bg-subtle);
  font-weight: 600;
}

.contact-actions {
  margin-top: 0.5rem;
}

/* --------------------------------------------------------------------------
   Toasts
   -------------------------------------------------------------------------- */
.toast-container {
  position: fixed;
  bottom: calc(1.25rem + env(safe-area-inset-bottom, 0px));
  right: 1.25rem;
  left: 1.25rem;
  max-width: 380px;
  margin: 0 auto;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  background: #0f172a;
  color: #ffffff;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: var(--shadow-modal);
  pointer-events: auto;
  text-align: center;
  animation: toastIn 0.18s ease-out;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --------------------------------------------------------------------------
   Optimisations Spécifiques Mobile (Smartphones <= 640px)
   -------------------------------------------------------------------------- */
@media (max-width: 640px) {
  .header-container {
    padding: 0.6rem 0.85rem;
  }

  .brand-name {
    font-size: 1.05rem;
  }

  .status-text {
    display: none; /* Sur mobile, seul le point vert/rouge s'affiche pour gagner de la place */
  }

  .status-indicator {
    padding: 0.35rem;
  }

  .app-main {
    padding: 1rem 0.85rem 2rem;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 0.65rem;
  }

  .filter-tabs {
    width: 100%;
    display: flex;
  }

  .tab {
    flex: 1;
    text-align: center;
    padding: 0.45rem 0.3rem;
  }

  .ads-grid {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }

  /* Modale Bottom Sheet sur mobile */
  .modal {
    padding: 0;
    align-items: flex-end;
  }

  .modal-card {
    border-radius: 16px 16px 0 0;
    max-height: 92vh;
    border-bottom: none;
  }

  .form-grid-2 {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .modal-footer {
    padding: 0.75rem 1rem;
  }

  .modal-footer .btn-primary {
    flex: 2;
  }

  .modal-footer .btn-ghost {
    flex: 1;
  }

  .modal-camera-dialog {
    align-items: stretch;
  }

  .camera-fullscreen-box {
    max-width: 100%;
    max-height: 100dvh;
    height: 100dvh;
    border-radius: 0;
  }
}