/* ============================================================
   VR3D THEME — Unified Design System
   Source unique pour tout le site. Ne pas dupliquer ces styles.
   ============================================================ */

/* ── Design Tokens ─────────────────────────────────────────── */
:root {
  /* Couleurs primaires */
  --vr-primary:    #18b8db;
  --vr-primary-2:  #0066ee;
  --vr-accent:     #00e6ff;
  --vr-success:    #12b37d;
  --vr-danger:     #ff3d70;
  --vr-warning:    #f5a623;

  /* Surfaces */
  --vr-ink:        #192641;
  --vr-ink-2:      #234060;
  --vr-muted:      rgba(238,246,255,0.70);
  --vr-glass:      rgba(22, 38, 60, 0.72);
  --vr-glass-light:rgba(240,245,255,0.95);
  --vr-border:     rgba(32,110,160,0.18);
  --vr-border-light:rgba(180,210,230,0.60);

  /* Ombres */
  --vr-shadow:     0 8px 32px rgba(31,38,135,0.18);
  --vr-shadow-sm:  0 2px 12px rgba(20,140,220,0.08);
  --vr-shadow-lg:  0 16px 48px rgba(0,0,0,0.28);

  /* Rayons */
  --vr-radius-xl:  1.5rem;
  --vr-radius-lg:  1.1rem;
  --vr-radius-md:  0.85rem;
  --vr-radius-sm:  0.6rem;
  --vr-radius-pill:999px;

  /* Typographie */
  --vr-font: 'Segoe UI', system-ui, -apple-system, sans-serif;

  /* Transitions */
  --vr-ease: cubic-bezier(.25,.8,.25,1);
  --vr-ease-bounce: cubic-bezier(.3,1.45,.5,1);
}

/* ── Reset & Base ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  min-height: 100%;
  margin: 0;
  font-family: var(--vr-font);
  color: var(--vr-ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: url('../images/background.jpg') center/cover fixed;
  overflow-x: hidden;
}

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

/* ── Background Overlay (pages publiques sombres) ──────────── */
.vr-overlay {
  position: fixed;
  inset: 0;
  z-index: 0;
  background: linear-gradient(105deg, rgba(24,40,62,0.92) 0%, rgba(30,136,229,0.30) 100%);
  pointer-events: none;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

/* ── Layout Utilities ──────────────────────────────────────── */
.vr-layer { position: relative; z-index: 1; }

.vr-page {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  padding-top: 72px; /* espace pour la navbar fixe */
}

.vr-center {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  position: relative;
  z-index: 1;
}

/* ── Glass Cards ───────────────────────────────────────────── */
.vr-glass {
  background: var(--vr-glass);
  box-shadow: var(--vr-shadow);
  border: 1px solid var(--vr-border);
  border-radius: var(--vr-radius-xl);
  backdrop-filter: blur(18px) saturate(120%);
  -webkit-backdrop-filter: blur(18px) saturate(120%);
  color: #fff;
}

.vr-glass-light {
  background: var(--vr-glass-light);
  color: var(--vr-ink);
  box-shadow: var(--vr-shadow-sm);
  border: 1px solid var(--vr-border-light);
  border-radius: var(--vr-radius-xl);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.vr-panel {
  background: #fff;
  border: 1px solid #e6eaf1;
  border-radius: var(--vr-radius-lg);
  padding: 16px;
  box-shadow: var(--vr-shadow-sm);
}

/* ── Navbar Publique ───────────────────────────────────────── */
.vr-navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(22,38,60,0.60);
  border-bottom: 1px solid var(--vr-border);
  backdrop-filter: blur(16px) saturate(120%);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
}

.vr-navbar .navbar-brand img {
  height: 38px;
  width: auto;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.3));
}

.vr-navbar .nav-link {
  color: rgba(255,255,255,0.80) !important;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 8px 16px !important;
  border-radius: var(--vr-radius-sm);
  transition: color 0.2s var(--vr-ease), background 0.2s var(--vr-ease);
}

.vr-navbar .nav-link:hover,
.vr-navbar .nav-link:focus {
  color: #fff !important;
  background: rgba(0,230,255,0.10);
}

.vr-navbar .nav-link.active {
  color: var(--vr-accent) !important;
  background: rgba(0,230,255,0.08);
}

/* ── Boutons ───────────────────────────────────────────────── */
.vr-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: var(--vr-radius-md);
  padding: 12px 22px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.3px;
  color: #fff;
  background: linear-gradient(135deg, var(--vr-primary), var(--vr-primary-2));
  box-shadow: 0 4px 18px rgba(0,200,255,0.12);
  cursor: pointer;
  text-decoration: none;
  transition:
    transform 0.18s var(--vr-ease-bounce),
    box-shadow 0.18s var(--vr-ease),
    filter 0.12s;
}

.vr-btn:hover, .vr-btn:focus-visible {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 8px 28px rgba(0,255,255,0.20);
  filter: brightness(1.08);
  color: #fff;
  text-decoration: none;
}

.vr-btn:active { transform: scale(0.98); }

.vr-btn:disabled {
  opacity: 0.50;
  transform: none;
  filter: none;
  cursor: not-allowed;
}

.vr-btn.secondary {
  background: linear-gradient(135deg, #141a21, var(--vr-primary));
}

.vr-btn.tertiary {
  background: linear-gradient(135deg, #59ebc4, var(--vr-primary));
  color: #1a2a20;
}

.vr-btn.success {
  background: linear-gradient(135deg, var(--vr-success), #0a8f63);
}

.vr-btn.danger {
  background: linear-gradient(135deg, var(--vr-danger), #d6164e);
}

.vr-btn.ghost {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  box-shadow: none;
}

.vr-btn.ghost:hover {
  background: rgba(0,230,255,0.12);
}

.vr-btn.sm {
  padding: 7px 14px;
  font-size: 0.85rem;
  border-radius: var(--vr-radius-sm);
}

/* ── Formulaires (thème sombre) ────────────────────────────── */
.vr-dark-form .form-control,
.vr-dark-form .form-select {
  background: rgba(255,255,255,0.07) !important;
  border: 1px solid rgba(255,255,255,0.14) !important;
  color: #fff !important;
  border-radius: var(--vr-radius-md) !important;
}

.vr-dark-form .form-control::placeholder {
  color: rgba(238,246,255,0.50) !important;
}

.vr-dark-form .form-control:focus,
.vr-dark-form .form-select:focus {
  box-shadow: 0 0 0 3px rgba(0,230,255,0.18) !important;
  border-color: rgba(0,230,255,0.50) !important;
}

.vr-dark-form .form-label {
  color: var(--vr-muted);
  font-weight: 600;
  font-size: 0.9rem;
}

.vr-dark-form .form-select option,
.vr-dark-form select option {
  background: #1a2840;
  color: #eef6ff;
}

.vr-dark-form .form-select option:checked,
.vr-dark-form select option:checked {
  background: var(--vr-primary);
  color: #fff;
}

/* ── Formulaires (thème clair — dashboard) ─────────────────── */
.vr-light-form .form-control,
.vr-light-form .form-select {
  border-radius: var(--vr-radius-sm) !important;
  border: 1px solid var(--vr-border-light) !important;
}

.vr-light-form .form-control:focus,
.vr-light-form .form-select:focus {
  box-shadow: 0 0 0 3px rgba(0,230,255,0.15) !important;
  border-color: rgba(0,230,255,0.45) !important;
}

/* ── Hero Card (index.html) ────────────────────────────────── */
.vr-hero {
  max-width: 440px;
  width: 100%;
  padding: 2.8rem 2.2rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.vr-hero::after {
  content: "";
  position: absolute;
  top: -30px; right: -60px;
  width: 200px; height: 200px;
  background: radial-gradient(circle at 60% 40%, rgba(0,230,255,0.12) 0%, transparent 80%);
  pointer-events: none;
}

.vr-hero .logo {
  width: 86px; height: 86px;
  margin-bottom: 20px;
  background: rgba(255,255,255,0.08);
  border-radius: var(--vr-radius-xl);
  box-shadow: 0 4px 20px rgba(0,200,255,0.12);
}

.vr-hero h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 0.6em;
  letter-spacing: 0.4px;
  color: #fff;
  text-shadow: 0 2px 16px rgba(0,0,0,0.4);
}

.vr-hero p {
  font-size: 1.08rem;
  color: var(--vr-muted);
  margin-bottom: 2rem;
}

.vr-hero .btn-stack {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.vr-hero .btn-stack .vr-btn {
  padding: 14px 24px;
  font-size: 1.05rem;
  border-radius: 1.4rem;
}

/* ── Login Box ─────────────────────────────────────────────── */
.vr-login {
  max-width: 440px;
  margin: 0 auto;
  padding: 32px 28px;
}

/* ── Viewer Panel ──────────────────────────────────────────── */
.vr-viewer-wrap {
  width: min(980px, 94vw);
  padding: 18px;
}

.vr-viewer-wrap iframe {
  width: 100%;
  height: 70vh;
  border: 0;
  border-radius: var(--vr-radius-lg);
}

/* ── Tutoriel ──────────────────────────────────────────────── */
.vr-tuto {
  width: min(1000px, 94vw);
  padding: 20px;
}

.vr-tuto h1 {
  font-size: 1.8rem;
  font-weight: 800;
  color: #fff;
}

.vr-tuto h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--vr-accent);
  margin-top: 2.2rem;
  margin-bottom: 0.8rem;
  padding-bottom: 6px;
  border-bottom: 1px solid rgba(0,230,255,0.15);
}

.vr-tuto p, .vr-tuto li { color: var(--vr-muted); line-height: 1.7; }
.vr-tuto strong { color: #fff; }

.vr-tuto .step-img {
  border-radius: var(--vr-radius-md);
  box-shadow: var(--vr-shadow-sm);
  margin: 8px 0;
}

.vr-tuto .pdf-frame {
  width: 100%;
  height: 70vh;
  border: 0;
  border-radius: var(--vr-radius-lg);
}

.vr-tuto .alert {
  background: rgba(0,230,255,0.06) !important;
  border: 1px solid rgba(0,230,255,0.18) !important;
  color: var(--vr-muted) !important;
  border-radius: var(--vr-radius-md);
}

/* ── Dashboard : Sidebar ───────────────────────────────────── */
.vr-sidebar {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: 230px;
  background: var(--vr-glass-light);
  box-shadow: 2px 0 24px rgba(24,120,190,0.06);
  border-right: 1px solid #e6eaf1;
  padding: 24px 12px;
  z-index: 50;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.vr-sidebar .brand {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 1.5px;
  color: var(--vr-primary);
  text-align: center;
  margin-bottom: 2rem;
  text-transform: uppercase;
}

.vr-sidebar ul { list-style: none; padding: 0; margin: 0; }
.vr-sidebar li { margin-bottom: 6px; }

.vr-sidebar a {
  text-decoration: none;
  color: var(--vr-ink-2);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 10px 16px;
  border-radius: var(--vr-radius-sm);
  display: flex;
  align-items: center;
  gap: 10px;
  transition: background 0.15s var(--vr-ease), color 0.15s var(--vr-ease);
}

.vr-sidebar a:hover {
  background: rgba(20,155,215,0.06);
  color: var(--vr-primary);
}

.vr-sidebar a.active {
  background: linear-gradient(90deg, #e3f0ff, #c5e9fa 80%);
  color: #0b87cd;
  font-weight: 700;
}

.vr-sidebar .logout {
  margin-top: auto;
  color: var(--vr-danger);
  font-weight: 700;
  border-top: 1px solid #eee;
  padding-top: 16px;
}

/* ── Dashboard : Main Content ──────────────────────────────── */
.vr-main {
  margin-left: 230px;
  padding: 32px 24px;
  min-height: 100vh;
  background: linear-gradient(125deg, rgba(243,250,255,0.88) 70%, rgba(220,245,255,0.75) 100%);
  color: var(--vr-ink);
}

.vr-main h1 {
  font-size: 2rem;
  font-weight: 800;
  color: #185394;
  margin: 0;
}

.vr-main h2 {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--vr-ink);
}

/* ── Dashboard : Stat Cards ────────────────────────────────── */
.vr-stats {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.vr-stat-card {
  flex: 1 1 170px;
  background: #fff;
  border-radius: var(--vr-radius-lg);
  padding: 1.3rem 1rem;
  box-shadow: var(--vr-shadow-sm);
  text-align: center;
  min-width: 160px;
}

.vr-stat-card h2 {
  font-size: 2.2rem;
  color: var(--vr-primary);
  margin: 0;
  font-weight: 800;
}

.vr-stat-card .label {
  color: var(--vr-ink);
  font-weight: 600;
  margin-top: 4px;
  font-size: 0.95rem;
}

/* ── Dashboard : Tab Content ───────────────────────────────── */
.tabcontent { display: none; }
.tabcontent.active { display: block; }

/* ── Dashboard : Action Cards ──────────────────────────────── */
.vr-action-card {
  background: linear-gradient(135deg, var(--vr-primary) 70%, #18d3af 100%);
  border-radius: var(--vr-radius-xl);
  padding: 24px;
  color: #fff;
  margin-bottom: 20px;
}

.vr-action-card h4 { font-weight: 700; margin-bottom: 16px; }

.vr-white-card {
  background: #fff;
  border-radius: var(--vr-radius-lg);
  padding: 20px;
  box-shadow: var(--vr-shadow-sm);
  margin-bottom: 20px;
  border: 1px solid #e6eaf1;
}

.vr-gradient-card {
  background: linear-gradient(90deg, #19c7e7 50%, #e8f6fd 100%);
  border-radius: var(--vr-radius-xl);
  padding: 24px;
  color: #fff;
  margin-bottom: 20px;
}

/* ── Client Explorer (dashboard) ───────────────────────────── */
.vr-split {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 16px;
}

.client-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 520px;
  overflow-y: auto;
  padding-right: 4px;
}

.client-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--vr-radius-sm);
  border: 1px solid #e6eaf1;
  background: #fff;
  cursor: pointer;
  user-select: none;
  transition: all 0.15s var(--vr-ease);
}

.client-item:hover {
  box-shadow: 0 0 0 3px rgba(20,155,215,0.10);
  border-color: #b7e4fa;
}

.client-item.active {
  background: linear-gradient(90deg, #e3f0ff, #b7e4fa 80%);
  border-color: #b7e2ff;
}

.client-item .name {
  font-weight: 800;
  color: var(--vr-ink-2);
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cloud-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.cloud-card {
  border: 1px solid #e6eaf1;
  border-radius: var(--vr-radius-md);
  background: linear-gradient(180deg, #fff, #f6fbff);
  padding: 10px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  transition: box-shadow 0.15s var(--vr-ease);
}

.cloud-card:hover {
  box-shadow: 0 4px 16px rgba(20,140,220,0.12);
}

.cloud-thumb {
  width: 78px; height: 58px;
  flex: 0 0 auto;
  border-radius: var(--vr-radius-sm);
  object-fit: cover;
  background: #0b0f14;
}

.cloud-meta { min-width: 0; flex: 1; }

.cloud-meta .code {
  font-weight: 900;
  color: var(--vr-ink-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cloud-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.cloud-actions .btn {
  padding: 4px 8px;
  border-radius: var(--vr-radius-sm);
  font-size: 0.82rem;
}

/* ── Folder Tree (dashboard admin) ─────────────────────────── */
.af-tree { display: flex; flex-direction: column; gap: 6px; }

.af-node {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--vr-radius-sm);
  border: 1px solid #e6eaf1;
  background: #fff;
  color: var(--vr-ink-2);
  cursor: pointer;
  user-select: none;
  transition: all 0.15s var(--vr-ease);
}

.af-node:hover {
  box-shadow: 0 0 0 3px rgba(20,155,215,0.10);
  border-color: #b7e4fa;
}

.af-node.active {
  background: linear-gradient(90deg, #e3f0ff, #b7e4fa 80%);
  border-color: #b7e2ff;
}

.af-node .label {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 700;
}

.af-chev {
  width: 18px; height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  cursor: pointer;
  flex: 0 0 auto;
}

.af-chev:hover { background: rgba(20,155,215,0.10); }
.af-chev svg { width: 16px; height: 16px; transition: transform 0.16s ease; }
.af-chev.open svg { transform: rotate(90deg); }

.af-children {
  margin-left: 18px;
  padding-left: 10px;
  border-left: 1px dashed #d7dbe0;
  overflow: hidden;
  max-height: 2000px;
  transition: max-height 0.2s ease;
}

.af-children.collapsed { max-height: 0; }

/* ── Client Espace (client.html) ───────────────────────────── */
.vr-client-sidebar {
  background: var(--vr-glass);
  border: 1px solid var(--vr-border);
  border-radius: var(--vr-radius-xl);
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  padding: 20px;
  color: #fff;
}

.vr-client-sidebar .list-group-item {
  background: rgba(255,255,255,0.04);
  color: #fff;
  border-color: rgba(255,255,255,0.08);
  cursor: pointer;
  transition: all 0.15s var(--vr-ease);
  font-size: 0.92rem;
}

.vr-client-sidebar .list-group-item span[style*="cursor:pointer"]:hover {
  background: rgba(0,230,255,0.15);
  border-radius: 4px;
}

.vr-client-sidebar .list-group-item:hover {
  background: rgba(0,230,255,0.06);
}

.vr-client-sidebar .list-group-item.active {
  background: linear-gradient(135deg, var(--vr-primary), var(--vr-primary-2));
  border-color: var(--vr-primary);
  color: #fff;
  font-weight: 700;
}

.vr-project-card {
  background: var(--vr-glass);
  border: 1px solid var(--vr-border);
  border-radius: var(--vr-radius-lg);
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  padding: 16px;
  color: #fff;
  transition: transform 0.2s var(--vr-ease), box-shadow 0.2s var(--vr-ease);
}

.vr-project-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,200,255,0.15);
}

.vr-project-card .thumbnail {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: var(--vr-radius-md);
  margin-bottom: 10px;
  background: rgba(0,0,0,0.3);
}

.vr-project-card select option {
  background: #1a2840;
  color: #eef6ff;
}

.vr-project-card select option:checked {
  background: var(--vr-primary);
  color: #fff;
}

.chip {
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: var(--vr-radius-pill);
  background: rgba(0,230,255,0.10);
  color: var(--vr-accent);
  font-weight: 700;
}

/* ── Modal Override ────────────────────────────────────────── */
.vr-modal .modal-content {
  background: var(--vr-glass);
  border: 1px solid var(--vr-border);
  border-radius: var(--vr-radius-xl);
  backdrop-filter: blur(18px) saturate(120%);
  -webkit-backdrop-filter: blur(18px) saturate(120%);
  color: #fff;
}

.vr-modal .modal-header { border-bottom: 1px solid rgba(255,255,255,0.08); }
.vr-modal .modal-footer { border-top: 1px solid rgba(255,255,255,0.08); }
.vr-modal .btn-close { filter: invert(1); }

/* ── Progress Bar ──────────────────────────────────────────── */
.progress-bar {
  font-weight: bold;
  font-size: 0.95rem;
}

/* ── Scrollbar ─────────────────────────────────────────────── */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(100,140,180,0.20); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: rgba(100,140,180,0.35); }

/* ── User Mini Badge ───────────────────────────────────────── */
.vr-user-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #eaf5fc;
  border-radius: var(--vr-radius-sm);
  padding: 6px 16px;
  font-size: 0.9rem;
  color: var(--vr-ink);
  font-weight: 600;
}

/* ── Dashboard Header ──────────────────────────────────────── */
.vr-dash-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 2rem;
}

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

/* Mobile sidebar (burger) */
.vr-sidebar-toggle {
  display: none;
  position: fixed;
  top: 12px; left: 12px;
  z-index: 60;
  background: #fff;
  border: 1px solid #e6eaf1;
  border-radius: var(--vr-radius-sm);
  padding: 8px 10px;
  cursor: pointer;
  box-shadow: var(--vr-shadow-sm);
}

@media (max-width: 992px) {
  /* Sidebar → slide-over */
  .vr-sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s var(--vr-ease);
  }
  .vr-sidebar.open { transform: translateX(0); }

  .vr-sidebar-toggle { display: flex; }

  .vr-main {
    margin-left: 0;
    padding: 20px 14px;
    padding-top: 56px;
  }

  /* Split layouts → single col */
  .vr-split {
    grid-template-columns: 1fr;
  }

  .client-list { max-height: 260px; }

  /* Hero adjustments */
  .vr-hero {
    padding: 2rem 1.2rem 1.5rem;
    margin: 16px;
    border-radius: var(--vr-radius-xl);
  }

  .vr-hero h1 { font-size: 1.5rem; }
  .vr-hero .logo { width: 64px; height: 64px; }

  /* Tuto */
  .vr-tuto { padding: 14px; }
  .vr-tuto h1 { font-size: 1.3rem; }
}

@media (max-width: 576px) {
  .vr-hero { padding: 1.5rem 1rem 1.2rem; }
  .vr-hero h1 { font-size: 1.25rem; }
  .vr-hero p { font-size: 0.95rem; }
  .vr-hero .btn-stack .vr-btn { padding: 12px 18px; font-size: 0.95rem; }

  .vr-login { padding: 24px 18px; }

  .vr-viewer-wrap iframe { height: 55vh; }

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

  .vr-dash-header { flex-direction: column; align-items: flex-start; }

  .vr-stat-card { min-width: 130px; }
}