:root {
  --white: #f2f5f8;
  --white-dim: #8b95a1;
  --blue: #4fa8ff;
  --blue-dim: #3572a6;
  --green: #46d383;
  --green-dim: #2f8f5c;
  --red: #e0524a;
  --bg-void: #05070a;
  --term-bg: #111418;
  --hairline: rgba(255, 255, 255, 0.07);
  font-size: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg-void);
  color: var(--white);
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  overflow: hidden;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  position: relative;
}

/* ---------- Space backdrop ---------- */

#starfield {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.nebula {
  position: fixed;
  width: 70vmax;
  height: 70vmax;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  z-index: 0;
  pointer-events: none;
  mix-blend-mode: screen;
}

.nebula-a {
  top: -20vmax;
  left: -15vmax;
  background: radial-gradient(circle, #1d3a6b 0%, transparent 70%);
  animation: drift-a 50s ease-in-out infinite;
}

.nebula-b {
  bottom: -25vmax;
  right: -20vmax;
  background: radial-gradient(circle, #1f5240 0%, transparent 70%);
  animation: drift-b 65s ease-in-out infinite;
}

@keyframes drift-a {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(6vmax, 8vmax);
  }
}

@keyframes drift-b {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(-7vmax, -5vmax);
  }
}

/* ---------- Floating terminal ---------- */

.float-wrap {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  width: min(920px, 92vw);
  height: min(600px, 78vh);
  perspective: 1200px;
  opacity: 1;
  transition:
    width 0.25s ease,
    height 0.25s ease,
    transform 0.25s ease,
    opacity 0.25s ease;
}

body.is-resizing .float-wrap,
body.is-dragging .float-wrap {
  transition: none;
}

.float-wrap.is-closed {
  opacity: 0;
  pointer-events: none;
}

.crt-frame.is-minimized #terminal {
  opacity: 0;
  pointer-events: none;
}

.crt-frame.is-minimized ~ .rh {
  pointer-events: none;
}

#terminal {
  transition: opacity 0.15s ease;
}

.crt-frame {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: var(--term-bg);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.03) inset,
    0 30px 60px -20px rgba(0, 0, 0, 0.7),
    0 10px 24px -10px rgba(0, 0, 0, 0.55);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  will-change: transform;
}

.crt-topbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  background: var(--term-bg);
  border-bottom: 1px solid var(--hairline);
  flex-shrink: 0;
  touch-action: none;
}

.crt-topbar:focus-visible {
  outline: 1px solid var(--blue);
  outline-offset: -1px;
}

body.is-dragging {
  user-select: none;
}

.crt-dots {
  display: flex;
  gap: 7px;
  flex-shrink: 0;
}

.crt-dot {
  position: relative;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: none;
  padding: 0;
  margin: 0;
  display: block;
  appearance: none;
  -webkit-appearance: none;
  outline: none;
}

.crt-dot::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 7px;
  height: 7px;
  transform: translate(-50%, -50%);
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  opacity: 0;
  transition: opacity 0.12s ease;
  pointer-events: none;
}

/* Real macOS reveals all three glyphs together when hovering any of them. */
.crt-dots:hover .crt-dot::before,
.crt-dots:focus-within .crt-dot::before {
  opacity: 1;
}

.crt-dot--red::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3E%3Cpath d='M1.5 1.5L6.5 6.5M6.5 1.5L1.5 6.5' fill='none' stroke='rgba(0,0,0,.6)' stroke-width='1.1' stroke-linecap='round'/%3E%3C/svg%3E");
}

.crt-dot--yellow::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3E%3Cpath d='M1.3 4H6.7' fill='none' stroke='rgba(0,0,0,.6)' stroke-width='1.2' stroke-linecap='round'/%3E%3C/svg%3E");
}

.crt-dot--green::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3E%3Cpath d='M4.8 1.3H6.7V3.2M3.2 6.7H1.3V4.8' fill='none' stroke='rgba(0,0,0,.6)' stroke-width='1.1' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

.crt-dot:focus-visible {
  outline: 1px solid var(--blue);
  outline-offset: 2px;
}

.crt-dot--red {
  background: #e0524a;
}

.crt-dot--yellow {
  background: #e0a83f;
}

.crt-dot--green {
  background: #6fae4f;
}

.crt-title {
  font-size: 12.5px;
  color: var(--white-dim);
  letter-spacing: 0.02em;
  cursor: default;
  user-select: none;
}

#terminal {
  flex: 1;
  min-height: 0;
  padding: 8px 14px 6px;
}

/* Resize handles — placed as siblings of crt-frame (not inside it) so they can
   straddle the visual edge even though crt-frame itself clips its rounded
   corners with overflow: hidden. */
.rh {
  position: absolute;
  z-index: 3;
}

.rh-n,
.rh-s {
  left: 16px;
  right: 16px;
  height: 10px;
}
.rh-n {
  top: -5px;
  cursor: n-resize;
}
.rh-s {
  bottom: -5px;
  cursor: s-resize;
}

.rh-e,
.rh-w {
  top: 16px;
  bottom: 16px;
  width: 10px;
}
.rh-e {
  right: -5px;
  cursor: e-resize;
}
.rh-w {
  left: -5px;
  cursor: w-resize;
}

.rh-nw,
.rh-ne,
.rh-sw,
.rh-se {
  width: 16px;
  height: 16px;
}
.rh-nw {
  top: -5px;
  left: -5px;
  cursor: nwse-resize;
}
.rh-ne {
  top: -5px;
  right: -5px;
  cursor: nesw-resize;
}
.rh-sw {
  bottom: -5px;
  left: -5px;
  cursor: nesw-resize;
}
.rh-se {
  bottom: -5px;
  right: -5px;
  cursor: nwse-resize;
}

.rh:focus-visible {
  outline: 1px solid var(--blue);
  outline-offset: -2px;
}

body.is-resizing {
  user-select: none;
}

body.is-resizing .crt-frame {
  transition: none;
}

.reopen-btn {
  position: fixed;
  z-index: 5;
  bottom: 64px;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--term-bg);
  border: 1px solid var(--hairline);
  color: var(--white);
  font-family: inherit;
  font-size: 13px;
  padding: 9px 18px;
  border-radius: 20px;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.2s ease,
    transform 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease;
}

.reopen-btn.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.reopen-btn:hover,
.reopen-btn:focus-visible {
  border-color: var(--blue);
  color: var(--blue);
  outline: none;
}

.noscript-hint {
  position: fixed;
  z-index: 1;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  margin: 0;
  font-size: 12.5px;
  color: var(--white-dim);
  text-align: center;
  pointer-events: none;
}

.noscript-hint code {
  color: var(--green);
}

/* xterm overrides */
.xterm {
  height: 100%;
}
.xterm-viewport {
  scrollbar-width: thin;
  scrollbar-color: transparent transparent;
  transition: scrollbar-color 0.2s ease;
}
.xterm-viewport.is-scrolling {
  scrollbar-color: var(--white-dim) transparent;
}

.xterm-viewport::-webkit-scrollbar {
  width: 8px;
}
.xterm-viewport::-webkit-scrollbar-thumb {
  background: transparent;
  border-radius: 4px;
  transition: background 0.2s ease;
}
.xterm-viewport.is-scrolling::-webkit-scrollbar-thumb {
  background: var(--white-dim);
}

@media (max-width: 600px) {
  :root {
    font-size: 14px;
  }
  .float-wrap {
    height: 74vh;
  }
}

@media (prefers-reduced-motion: reduce) {
  .nebula-a,
  .nebula-b {
    animation: none;
  }
  .crt-frame {
    transform: none !important;
  }
}

/*
    Shutdown: collapses the whole page to a thin line, then a point, then
    fades out — like an old CRT powering off.
*/

@keyframes crt-power-off {
  0% {
    transform: scale(1, 1);
    opacity: 1;
  }
  55% {
    transform: scale(1, 0.008);
    opacity: 1;
  }
  80% {
    transform: scale(0.01, 0.008);
    opacity: 1;
  }
  100% {
    transform: scale(0.01, 0.008);
    opacity: 0;
  }
}

body.is-shutting-down {
  transform-origin: center center;
  animation: crt-power-off 0.7s cubic-bezier(0.7, 0, 1, 1) forwards;
}

@media (prefers-reduced-motion: reduce) {
  body.is-shutting-down {
    animation: none;
    opacity: 0;
    transition: opacity 0.3s ease;
  }
}