/* ==========================================================================
   Dettagli: cartelle che si aprono, luci, accensione e spegnimento, Dock
   ========================================================================== */

:root {
  --spring: cubic-bezier(0.3, 1.45, 0.5, 1);
  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
  --item-light: rgba(10, 122, 255, 0.12);
  --item-light-edge: rgba(10, 122, 255, 0.28);
}

/* Tema scuro: data-theme="dark" lo imposta js/theme.js (sistema o scelta manuale) */
:root[data-theme="dark"] {
  --item-light: rgba(255, 255, 255, 0.09);
  --item-light-edge: rgba(255, 255, 255, 0.22);
}

/* --- cartelle che si aprono al passaggio del cursore ------------------------------ */

.svg svg .f-paper {
  transform: translateY(9px);
  transform-box: fill-box;
  transition: transform 0.38s var(--spring);
}

.svg svg .f-front {
  transform-box: fill-box;
  transform-origin: 50% 100%;
  transition: transform 0.38s var(--spring);
}

.items-grid .item.folder:hover .f-paper,
.desk-icon:hover .f-paper,
.desk-icon.dragging .f-paper {
  transform: translateY(0);
}

.items-grid .item.folder:hover .f-front,
.desk-icon:hover .f-front,
.desk-icon.dragging .f-front {
  transform: skewX(-5deg) scaleY(0.93);
}

.items-grid .item .item-icon,
.desk-icon .desk-icon-img {
  transition: transform 0.35s var(--spring), filter 0.3s;
}

.items-grid .item:hover .item-icon {
  transform: translateY(-3px) scale(1.04);
  filter: drop-shadow(0 8px 10px rgba(0, 0, 0, 0.16));
}

.items-grid .item:active .item-icon {
  transform: translateY(0) scale(0.97);
  transition-duration: 0.1s;
}

/* --- riflesso che segue il cursore sugli elementi ------------------------------------- */

.items-grid .item,
.side-item,
.spot-item,
.nc-item {
  position: relative;
  isolation: isolate;
}

.items-grid .item::before,
.side-item::before,
.nc-item::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background: radial-gradient(130px circle at var(--mx, 50%) var(--my, 50%), var(--item-light), transparent 70%);
  opacity: 0;
  transition: opacity 0.25s;
  pointer-events: none;
}

/* bordo che si illumina dal lato del cursore */
.items-grid .item::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: radial-gradient(90px circle at var(--mx, 50%) var(--my, 50%), var(--item-light-edge), transparent 70%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.25s;
  pointer-events: none;
}

.items-grid .item.lit::before,
.items-grid .item.lit::after,
.side-item.lit::before,
.nc-item.lit::before {
  opacity: 1;
}

.items-grid .item.selected::before,
.items-grid .item.selected::after {
  opacity: 0;
}

.btn,
.ms-btn {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  transition: transform 0.12s, filter 0.15s, box-shadow 0.2s;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(80px circle at var(--mx, 50%) var(--my, 50%), rgba(255, 255, 255, 0.35), transparent 70%);
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

.btn.lit::before {
  opacity: 1;
}

.btn:active:not(:disabled),
.ms-btn:active {
  transform: scale(0.97);
}

/* --- scrivania: alone sullo sfondo e icone che si illuminano ---------------------------- */

.desktop-light,
.lock::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(520px circle at var(--cx, 50%) var(--cy, 40%), rgba(255, 255, 255, 0.13), transparent 65%);
  mix-blend-mode: soft-light;
  transition: background 0.1s;
}

.desktop-light {
  z-index: 0;
}

.lock::before {
  z-index: -1;
}

.desk-icon .desk-icon-img {
  position: relative;
}

.desk-icon .desk-icon-img::before {
  content: '';
  position: absolute;
  inset: -14px;
  z-index: -1;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(255, 255, 255, 0.42), rgba(255, 255, 255, 0) 75%);
  opacity: var(--near, 0);
  transition: opacity 0.15s;
  pointer-events: none;
}

.desk-icon .desk-icon-img .svg {
  transition: filter 0.2s, transform 0.35s var(--spring);
  transform: translateY(calc(var(--near, 0) * -3px)) scale(calc(1 + var(--near, 0) * 0.05));
  filter: drop-shadow(0 calc(2px + var(--near, 0) * 8px) calc(4px + var(--near, 0) * 10px) rgba(0, 0, 0, 0.28)) brightness(calc(1 + var(--near, 0) * 0.08));
}

.desk-icon.dragging .desk-icon-img .svg {
  transform: scale(1.08) rotate(-2deg);
}

/* --- schermata di accesso ------------------------------------------------------------- */

.lock .lock-card {
  animation: lock-rise 0.8s var(--ease-out) 0.15s both;
}

.lock .lock-footer {
  animation: fade 1s ease 0.5s both;
}

.lock-avatar {
  animation: avatar-breathe 4s ease-in-out infinite;
}

/* Simbolo di accensione del logo: "respira" come un led in standby, si illumina al passaggio */
.lock-avatar .ia-power {
  color: #bfe6ff;
  animation: ia-standby 3.2s ease-in-out infinite;
  transition: color 0.3s;
}

.lock-avatar:hover .ia-power,
.lock.unlocking .ia-power {
  color: #7ff3ff;
  animation: none;
  opacity: 1;
}

.lock-avatar:hover {
  filter: drop-shadow(0 8px 22px rgba(0, 0, 0, 0.28)) drop-shadow(0 0 18px rgba(127, 243, 255, 0.55));
}

.ms-btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: -60%;
  width: 40%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.85), transparent);
  transform: skewX(-20deg);
  transition: none;
}

.ms-btn:hover::after {
  left: 130%;
  transition: left 0.75s ease;
}

.lock.unlocking .lock-card,
.lock.unlocking .lock-footer {
  opacity: 0;
  transform: scale(0.92);
  filter: blur(6px);
  transition: opacity 0.4s, transform 0.5s var(--ease-out), filter 0.4s;
}

/* --- accensione ------------------------------------------------------------------------ */

.boot {
  position: fixed;
  inset: 0;
  z-index: 9900;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  background: #05060b;
  color: #fff;
  transition: opacity 0.85s ease, transform 0.9s var(--ease-out), filter 0.85s ease;
}

.boot-glow {
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(90, 160, 255, 0.35), rgba(140, 80, 240, 0.12) 55%, transparent);
  filter: blur(10px);
  animation: boot-glow 2.4s ease-in-out infinite;
  pointer-events: none;
}

.boot-logo {
  position: relative;
  height: 124px;
  color: #fff;
  animation: boot-logo 1s var(--ease-out) both;
  filter: drop-shadow(0 0 28px rgba(90, 170, 255, 0.55));
}

.boot-greet {
  position: relative;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  animation: boot-text 0.9s var(--ease-out) 0.35s both;
}

.boot-bar {
  position: relative;
  width: 180px;
  height: 4px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.16);
  overflow: hidden;
  animation: fade 0.6s ease 0.5s both;
}

.boot-bar i {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: #fff;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
  transition: width 0.5s var(--ease-out);
}

.boot.leaving {
  opacity: 0;
  transform: scale(1.12);
  filter: blur(10px);
  pointer-events: none;
}

/* la scrivania si "accende" */
.power-dim {
  position: fixed;
  inset: 0;
  z-index: 8000;
  background: #05060b;
  pointer-events: none;
  animation: power-dim 1.3s ease 0.1s both;
}

.desktop.powering-on .menubar {
  animation: menubar-in 0.7s var(--ease-out) 0.55s both;
}

.desktop.powering-on .dock {
  animation: dock-in 0.9s var(--spring) 0.7s both;
}

.desktop.powering-on .desk-icon,
.desktop.powering-on .desktop-empty {
  animation: icon-pop 0.6s var(--spring) both;
  animation-delay: calc(0.8s + var(--i, 0) * 70ms);
}

.desktop.fading-in {
  animation: fade 0.5s ease both;
}

/* --- spegnimento ------------------------------------------------------------------------- */

.shutdown {
  position: fixed;
  inset: 0;
  z-index: 9900;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: #05060b;
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
  animation: fade 0.7s ease both;
}

.shutdown-spinner {
  width: 22px;
  height: 22px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.desktop.powering-off {
  transition: transform 0.7s var(--ease-out), filter 0.7s;
  transform: scale(0.96);
  filter: blur(4px) brightness(0.6);
}

/* --- Dock -------------------------------------------------------------------------------- */

.dock.magnetic .dock-item {
  transition: transform 0.12s ease-out, margin 0.12s ease-out;
}

.dock.magnetic .dock-item:hover,
.dock.magnetic .dock-item:hover + .dock-item,
.dock.magnetic .dock-item:has(+ .dock-item:hover) {
  margin: 0;
  transform: none;
}

.dock-icon.bounce,
.dock-min-frame.bounce {
  animation: dock-bounce 0.9s ease-out;
}

/* riflesso sul Dock */
.dock::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.28), transparent 45%);
  pointer-events: none;
  z-index: -1;
}

/* --- Finder: elementi che entrano nella direzione di navigazione -------------------------- */

.items-enter .item,
.items-enter tbody tr {
  animation: item-in-forward 0.38s var(--ease-out) both;
  animation-delay: calc(var(--i, 0) * 16ms);
}

.items-enter.back .item,
.items-enter.back tbody tr {
  animation-name: item-in-back;
}

.items-enter.open .item,
.items-enter.open tbody tr {
  animation-name: item-in-open;
}

/* --- animazioni ---------------------------------------------------------------------------- */

@keyframes lock-rise {
  from {
    opacity: 0;
    transform: translateY(24px) scale(0.98);
  }
}

@keyframes ia-standby {
  50% {
    opacity: 0.45;
  }
}

/* All'accensione il pallino cade al suo posto e il simbolo si disegna e si illumina */
.boot-logo .ia-dot {
  transform-box: fill-box;
  transform-origin: center;
  animation: ia-dot-drop 0.7s cubic-bezier(0.34, 1.56, 0.64, 1) 0.15s both;
}

.boot-logo .ia-power {
  stroke-dasharray: 100;
  animation: ia-power-on 0.9s ease-out 0.45s both;
}

@keyframes ia-dot-drop {
  from {
    opacity: 0;
    transform: translateY(-60%) scale(0.6);
  }
}

@keyframes ia-power-on {
  from {
    stroke-dashoffset: 100;
    color: #fff;
  }
  60% {
    stroke-dashoffset: 0;
    color: #7ff3ff;
  }
  to {
    stroke-dashoffset: 0;
    color: #7ff3ff;
  }
}

@keyframes avatar-breathe {
  50% {
    filter: drop-shadow(0 8px 28px rgba(90, 170, 255, 0.55));
    transform: translateY(-2px);
  }
}

@keyframes boot-logo {
  from {
    opacity: 0;
    transform: scale(0.7);
    filter: drop-shadow(0 0 0 rgba(90, 170, 255, 0)) brightness(0.4);
  }
}

@keyframes boot-text {
  from {
    opacity: 0;
    transform: translateY(8px);
    letter-spacing: 0.06em;
  }
}

@keyframes boot-glow {
  50% {
    transform: scale(1.12);
    opacity: 0.8;
  }
}

@keyframes power-dim {
  to {
    opacity: 0;
  }
}

@keyframes menubar-in {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
}

@keyframes dock-in {
  from {
    transform: translate(-50%, 140%);
  }
  to {
    transform: translate(-50%, 0);
  }
}

@keyframes icon-pop {
  from {
    opacity: 0;
    scale: 0.6;
  }
}

@keyframes dock-bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  25% {
    transform: translateY(-16px);
  }
  50% {
    transform: translateY(0);
  }
  70% {
    transform: translateY(-7px);
  }
}

@keyframes item-in-forward {
  from {
    opacity: 0;
    transform: translateX(14px);
  }
}

@keyframes item-in-back {
  from {
    opacity: 0;
    transform: translateX(-14px);
  }
}

@keyframes item-in-open {
  from {
    opacity: 0;
    transform: scale(0.94);
  }
}

@media (prefers-reduced-motion: reduce) {
  .desktop-light,
  .lock::before,
  .ms-btn::after {
    display: none;
  }

  .lock-avatar .ia-power,
  .boot-logo .ia-dot,
  .boot-logo .ia-power {
    animation: none;
  }
}