style(ui): boutons globaux pour toutes les pages

p/assets/styles/main.css

@@ -167,16 +167,58 @@ main[data-page-content] {
   text-decoration: none;
   font-weight: 700;
   border: 1px solid transparent;
+  cursor: pointer;
+  transition:
+    transform 180ms ease,
+    background-color 180ms ease,
+    border-color 180ms ease,
+    color 180ms ease,
+    box-shadow 180ms ease,
+    opacity 180ms ease;
+  user-select: none;
+  -webkit-tap-highlight-color: transparent;
 }
 
 .button-primary {
   background: linear-gradient(145deg, var(--accent), var(--accent-strong));
   color: #08101d;
+  box-shadow: 0 12px 28px rgba(2, 6, 23, 0.25);
 }
 
 .button-secondary {
-  background: rgba(255,255,255,0.03);
+  background: rgba(255,255,255,0.04);
   color: var(--text);
+  border-color: rgba(148, 163, 184, 0.18);
+}
+
+.button:hover,
+.button:focus-visible {
+  transform: translateY(-1px);
+  box-shadow: 0 14px 30px rgba(2, 6, 23, 0.28);
+}
+
+.button-primary:hover,
+.button-primary:focus-visible {
+  background: linear-gradient(145deg, color-mix(in srgb, var(--accent) 86%, white), color-mix(in srgb, var(--accent-strong) 92%, white));
+}
+
+.button-secondary:hover,
+.button-secondary:focus-visible {
+  background: rgba(125, 211, 252, 0.12);
+  border-color: rgba(125, 211, 252, 0.35);
+}
+
+.button:focus-visible {
+  outline: 2px solid rgba(125, 211, 252, 0.85);
+  outline-offset: 2px;
+}
+
+.button[aria-disabled="true"],
+.button:disabled {
+  opacity: 0.55;
+  pointer-events: none;
+  transform: none;
+  box-shadow: none;
 }