*,
*::before,
*::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: "JetBrains Mono", monospace;
  background: #000;
  color: #c8ffcc;
  overflow: hidden;
}

.matrix-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  background: radial-gradient(circle at top, #042b1b 0, #000 60%);
}

#rain {
  width: 100%;
  height: 100%;
  display: block;
}

.vignette {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: radial-gradient(circle at center, transparent 0, transparent 55%, rgba(0,0,0,0.8) 100%);
}

.scanline {
  position: fixed;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 255, 70, 0.06) 3px
  );
  mix-blend-mode: soft-light;
  animation: scan 6s linear infinite;
  opacity: 0.8;
}

@keyframes scan {
  0% { background-position-y: 0; }
  100% { background-position-y: 100px; }
}

.shell {
  position: relative;
  z-index: 4;
  max-width: 1200px;
  margin: 0 auto;
  height: 100vh;
  padding: 18px 18px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.shell__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 14px;
  background: rgba(0, 12, 5, 0.9);
  border: 1px solid rgba(0, 255, 120, 0.4);
  border-radius: 10px;
  box-shadow: 0 0 18px rgba(0, 255, 70, 0.20);
  backdrop-filter: blur(6px);
}

.shell__title {
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.12em;
  font-size: 13px;
  text-transform: uppercase;
  color: #7bff94;
}

.shell__label {
  text-shadow: 0 0 10px rgba(0, 255, 70, 0.9);
}

.led {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #1fdf55;
  box-shadow: 0 0 8px #1fdf55;
}

.shell__status {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: #9bffb7;
}

.shell__time { opacity: 0.75; }

.badge {
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(0, 255, 120, 0.5);
  background: radial-gradient(circle at top, rgba(19, 125, 73, 0.4), rgba(1, 25, 9, 0.9));
  box-shadow: 0 0 12px rgba(0, 255, 90, 0.3);
}

.shell__body {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(260px, 320px) minmax(0, 1fr);
  gap: 14px;
  min-height: 0;
}

.side {
  background: rgba(0, 10, 3, 0.92);
  border-radius: 14px;
  border: 1px solid rgba(0, 255, 120, 0.28);
  box-shadow: 0 0 20px rgba(0, 255, 120, 0.12), inset 0 0 14px rgba(0, 255, 90, 0.2);
  padding: 14px 14px 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow: hidden;
}

.side__title {
  margin: 0 0 4px;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: #77ffaf;
  text-transform: uppercase;
}

.side__log {
  flex: 1;
  font-size: 11px;
  line-height: 1.4;
  overflow-y: auto;
  padding-right: 4px;
}

.side__log-line {
  opacity: 0.85;
  margin-bottom: 2px;
  white-space: pre-wrap;
}

.side__log-line--dim { opacity: 0.55; }

.core {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  background: radial-gradient(circle at top left, rgba(0, 255, 90, 0.06), transparent 50%),
              radial-gradient(circle at bottom right, rgba(0, 255, 160, 0.04), transparent 55%);
  border: 1px solid rgba(0, 255, 120, 0.35);
  box-shadow: 0 0 28px rgba(0, 255, 120, 0.18), inset 0 0 20px rgba(0, 255, 70, 0.10);
}

.panel {
  position: absolute;
  inset: 0;
  padding: 16px 18px 20px;
  display: none;
  flex-direction: column;
  gap: 12px;
  backdrop-filter: blur(8px);
  animation: fadeIn 0.28s ease-out;
}

.panel.active { display: flex; }

.panel--wide .panel__body {
  flex-direction: column;
}

.panel__header {
  display: flex;
  align-items: center;
  gap: 10px;
}

.panel__tag {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  padding: 2px 10px;
  border-radius: 999px;
  border: 1px solid rgba(0, 255, 120, 0.4);
  background: rgba(0, 10, 3, 0.9);
  box-shadow: 0 0 10px rgba(0, 255, 90, 0.25);
}

.panel__title {
  margin: 0;
  font-size: 16px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #c9ffdc;
}

.panel__body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 4px;
}

.panel__body--terminal {
  height: 100%;
}

.panel__text {
  margin: 0;
  font-size: 13px;
  color: #e1ffe9;
}

.panel__text--large {
  font-size: 15px;
}

.panel__cipher {
  display: inline-flex;
  padding: 6px 10px;
  background: rgba(0, 15, 7, 0.9);
  border-radius: 6px;
  border: 1px solid rgba(0, 255, 120, 0.4);
  box-shadow: 0 0 12px rgba(0, 255, 90, 0.24);
  font-size: 13px;
}

.panel__hint {
  margin: 0;
  font-size: 12px;
  color: #92ffbe;
  opacity: 0.9;
}

.panel__hint--terminal { margin-top: 8px; }

.panel__glitch {
  margin-top: 4px;
  font-size: 28px;
}

.glitch {
  position: relative;
  display: inline-block;
  color: #9dffb9;
  text-shadow: 0 0 6px rgba(0, 255, 90, 0.8), 0 0 16px rgba(0, 255, 120, 0.6);
  animation: glitch 2.2s infinite;
  letter-spacing: 0.2em;
}

.glitch::before,
.glitch::after {
  content: attr(data-glitch);
  position: absolute;
  left: 0;
  top: 0;
  opacity: 0.8;
}

.glitch::before {
  transform: translate(-1px, 0);
  color: rgba(0, 255, 180, 0.7);
  mix-blend-mode: screen;
}

.glitch::after {
  transform: translate(1px, 0);
  color: rgba(0, 255, 60, 0.7);
  mix-blend-mode: screen;
}

@keyframes glitch {
  0% { transform: translate(0); }
  10% { transform: translate(-1px, 1px); }
  20% { transform: translate(1px, -1px); }
  25% { transform: translate(0); }
  30% { transform: translate(2px, -2px); }
  35% { transform: translate(0); }
  100% { transform: translate(0); }
}

.panel__input-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}

.panel__input-row label { opacity: 0.8; }

.panel__input-row input {
  flex: 1;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid rgba(0, 255, 140, 0.45);
  background: rgba(0, 10, 4, 0.95);
  color: #e5ffe9;
  font-family: inherit;
  font-size: 13px;
  outline: none;
  box-shadow: inset 0 0 8px rgba(0, 255, 90, 0.25);
}

.panel__input-row input:focus {
  box-shadow: 0 0 12px rgba(0, 255, 140, 0.6), inset 0 0 6px rgba(0, 255, 90, 0.3);
}

.btn {
  align-self: flex-start;
  margin-top: 4px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid rgba(0, 255, 140, 0.7);
  background: linear-gradient(135deg, #0f7a3c, #1ac465);
  color: #07140c;
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.08s ease-out, box-shadow 0.1s, background 0.1s, filter 0.1s;
  box-shadow: 0 0 14px rgba(0, 255, 140, 0.6);
}

.btn:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
  box-shadow: 0 0 6px rgba(0, 255, 140, 0.4);
}

.btn:disabled {
  opacity: 0.35;
  cursor: default;
  box-shadow: none;
}

.btn--mini {
  font-size: 11px;
  padding-inline: 12px;
}

.btn--right {
  align-self: flex-end;
}

.terminal-frame {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(0, 255, 120, 0.5);
  box-shadow: 0 0 22px rgba(0, 255, 90, 0.22), inset 0 0 14px rgba(0, 255, 60, 0.25);
  background: #020804;
  display: flex;
  flex-direction: column;
  min-height: 260px;
  max-height: 360px;
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  background: linear-gradient(90deg, #021207, #033119);
  border-bottom: 1px solid rgba(0, 255, 120, 0.4);
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 999px;
}

.dot--red {
  background: #ff5f57;
  box-shadow: 0 0 6px rgba(255, 95, 87, 0.7);
}

.dot--amber {
  background: #ffbd2e;
  box-shadow: 0 0 6px rgba(255, 189, 46, 0.7);
}

.dot--green {
  background: #28c840;
  box-shadow: 0 0 6px rgba(40, 200, 64, 0.7);
}

.terminal-title {
  margin-left: 4px;
  font-size: 11px;
  opacity: 0.85;
}

.terminal {
  flex: 1;
  padding: 4px 6px;
  font-size: 13px;
}

.xterm {
  padding: 4px 6px;
}

.xterm-viewport {
  background-color: #020804 !important;
}

.xterm-screen {
  text-shadow: 0 0 4px rgba(0, 255, 90, 0.5);
}

.xterm .xterm-rows {
  color: #b9ffb9;
}

.xterm-cursor-block {
  background-color: rgba(200, 255, 210, 0.9) !important;
}

.panel__body--center {
  flex: 1;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hidden {
  display: none !important;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  body { overflow: auto; }
  .shell { height: auto; }
  .shell__body {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
  }
  .side {
    order: 2;
    min-height: 180px;
  }
  .core {
    order: 1;
    min-height: 320px;
  }
}