/* =====================================================
   ui.css
   Purpose: UI components + micro-interactions + motion
   ===================================================== */

/* ---------- Motion tokens ---------- */
:root{
  --ease-out: cubic-bezier(.22,1,.36,1);
  --dur-1: 140ms;
  --dur-2: 240ms;
  --dur-3: 420ms;
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce){
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* ---------- Buttons ---------- */
.button,
button.button{
  cursor: pointer;
  border: 1px solid rgba(110,168,255,.45);
  background: rgba(110,168,255,.14);
  color: inherit;
  border-radius: 12px;
  padding: 10px 14px;
  font-weight: 650;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: transform var(--dur-1) var(--ease-out), background var(--dur-1) var(--ease-out), border-color var(--dur-1) var(--ease-out);
}
.button:hover{ transform: translateY(-1px); background: rgba(110,168,255,.20); }
.button:active{ transform: translateY(0); }

/* Ghost button */
.button.ghost{
  background: transparent;
  border-color: rgba(255,255,255,.16);
}
.button.ghost:hover{ background: rgba(255,255,255,.04); }

/* ---------- Card hover ---------- */
.card{
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(15,26,48,.75);
  padding: 16px;
  box-shadow: 0 14px 34px rgba(0,0,0,.25);
  transition: transform var(--dur-2) var(--ease-out), border-color var(--dur-2) var(--ease-out);
}
.card.hover:hover{
  transform: translateY(-4px);
  border-color: rgba(110,168,255,.35);
}

/* ---------- “Reveal” animation (scroll-in) ---------- */
.reveal{
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--dur-3) var(--ease-out), transform var(--dur-3) var(--ease-out);
}
.reveal.is-in{
  opacity: 1;
  transform: translateY(0);
}
/* If JS fails for any reason, don't hide content forever */
.no-js .reveal { opacity: 1; transform: none; }

/* ---------- Accordion ---------- */
.accordion{
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 16px;
  overflow: hidden;
  background: rgba(255,255,255,.02);
}
.accordion button{
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  color: inherit;
  padding: 14px 14px;
  font-weight: 650;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.accordion .chev{
  transition: transform var(--dur-2) var(--ease-out);
  opacity: .85;
}
.accordion .panel{
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur-2) var(--ease-out);
}
.accordion .panel > div{
  overflow: hidden;
  padding: 0 14px;
  color: rgba(232,238,252,.88);
}
.accordion.is-open .panel{ grid-template-rows: 1fr; }
.accordion.is-open .panel > div{ padding: 0 14px 14px; }
.accordion.is-open .chev{ transform: rotate(180deg); }

/* ---------- Tabs ---------- */
.tabs{ border: 1px solid rgba(255,255,255,.12); border-radius: 16px; overflow: hidden; }
.tablist{
  display: flex;
  gap: 6px;
  padding: 10px;
  border-bottom: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.02);
}
.tablist button{
  border: 1px solid transparent;
  background: transparent;
  color: rgba(232,238,252,.80);
  padding: 9px 12px;
  border-radius: 12px;
  cursor: pointer;
  transition: background var(--dur-1) var(--ease-out), border-color var(--dur-1) var(--ease-out);
}
.tablist button[aria-selected="true"]{
  background: rgba(110,168,255,.14);
  border-color: rgba(110,168,255,.35);
  color: rgba(232,238,252,1);
}
.tabpanels{ padding: 14px; }
.tabpanel{ display: none; }
.tabpanel.is-active{ display: block; }

/* ---------- Modal ---------- */
.modal-backdrop{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 18px;
  z-index: 50;
}
.modal-backdrop.is-open{ display: flex; }
.modal{
  width: min(720px, 96vw);
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(15,26,48,.96);
  box-shadow: 0 24px 80px rgba(0,0,0,.55);
  transform: translateY(8px);
  opacity: 0;
  transition: transform var(--dur-2) var(--ease-out), opacity var(--dur-2) var(--ease-out);
}
.modal-backdrop.is-open .modal{ transform: translateY(0); opacity: 1; }
.modal-header{
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 14px 0;
}
.modal-body{ padding: 14px; color: rgba(232,238,252,.88); }
.modal-close{
  border: 1px solid rgba(255,255,255,.16);
  background: transparent;
  color: inherit;
  border-radius: 12px;
  padding: 8px 10px;
  cursor: pointer;
}

/* ---------- Toast ---------- */
.toast-host{
  position: fixed;
  right: 18px;
  bottom: 18px;
  display: grid;
  gap: 10px;
  z-index: 60;
}
.toast{
  width: min(360px, calc(100vw - 36px));
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(15,26,48,.92);
  padding: 12px 12px;
  box-shadow: 0 18px 50px rgba(0,0,0,.45);
  animation: toast-in var(--dur-2) var(--ease-out) both;
}
@keyframes toast-in{
  from{ opacity: 0; transform: translateY(10px); }
  to{ opacity: 1; transform: translateY(0); }
}

/* ---------- Simple “shimmer” skeleton ---------- */
.skeleton{
  border-radius: 12px;
  background: linear-gradient(90deg, rgba(255,255,255,.05), rgba(255,255,255,.09), rgba(255,255,255,.05));
  background-size: 200% 100%;
  animation: shimmer 1.1s linear infinite;
}
@keyframes shimmer{
  0%{ background-position: 200% 0; }
  100%{ background-position: -200% 0; }
}