:root {
  --bg-1: #050a12;
  --bg-2: #0a1019;
  --panel: rgba(13, 20, 29, 0.86);
  --panel-alt: rgba(18, 25, 35, 0.95);
  --line: rgba(102, 232, 255, 0.36);
  --green: #75ffc5;
  --green-soft: #d8ffe8;
  --cyan: #6ee7ff;
  --red: #ff4d6d;
  --red-deep: #ff1931;
  --yellow: #ffd166;
  --violet: #a78bfa;
  --text: #eaf7ff;
  --muted: #9fe2ff;
  --shadow: rgba(110, 231, 255, 0.24);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
  min-height: 100vh;
  background:
    radial-gradient(circle at top, rgba(110, 231, 255, 0.12), transparent 30%),
    radial-gradient(circle at bottom, rgba(255, 77, 109, 0.08), transparent 30%),
    linear-gradient(180deg, var(--bg-1) 0%, var(--bg-2) 100%);
  color: var(--text);
  font-family: "JetBrains Mono", monospace;
}

body {
  position: relative;
  display: grid;
  place-items: center;
  padding: 28px;
  overflow: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.04),
    rgba(255, 255, 255, 0.04) 1px,
    transparent 1px,
    transparent 4px
  );
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0.4;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, rgba(110, 231, 255, 0.04), transparent 40%, rgba(255, 77, 109, 0.06));
  pointer-events: none;
}

.screen {
  width: min(920px, 100%);
  position: relative;
  z-index: 1;
}

.hidden {
  display: none;
}

.terminal-window {
  position: relative;
  background: rgba(9, 15, 22, 0.92);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow:
    0 0 0 1px rgba(110, 231, 255, 0.08),
    0 0 18px rgba(110, 231, 255, 0.12),
    0 0 42px rgba(110, 231, 255, 0.15),
    0 0 90px rgba(167, 139, 250, 0.08);
  overflow: hidden;
  backdrop-filter: blur(4px);
}

.terminal-window.critical {
  border-color: rgba(255, 77, 109, 0.62);
  box-shadow:
    0 0 0 1px rgba(255, 77, 109, 0.10),
    0 0 20px rgba(255, 77, 109, 0.18),
    0 0 40px rgba(255, 77, 109, 0.12);
}

.terminal-window::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(110, 231, 255, 0.04), transparent 26%, transparent 74%, rgba(255, 77, 109, 0.04));
  pointer-events: none;
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(15, 21, 31, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 12px 18px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 12px currentColor;
}

.dot.red { background: var(--red); color: var(--red); }
.dot.yellow { background: var(--yellow); color: var(--yellow); }
.dot.green { background: var(--green); color: var(--green); }

.title {
  margin-left: 10px;
  color: var(--muted);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-shadow: 0 0 12px rgba(110, 231, 255, 0.45);
}

.terminal-body {
  position: relative;
  padding: 28px 30px 32px;
  line-height: 1.8;
  min-height: 370px;
  font-size: clamp(0.95rem, 2vw, 1.08rem);
  color: var(--green-soft);
}

#boot-output {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  min-height: 300px;
  white-space: pre-wrap;
  color: var(--green-soft);
  text-shadow: 0 0 12px rgba(117, 255, 197, 0.7), 0 0 26px rgba(110, 231, 255, 0.18);
  animation: flicker 4s linear infinite alternate;
}

.boot-line {
  min-height: 1.8em;
  font-weight: 500;
  letter-spacing: 0.06em;
  white-space: pre-wrap;
}

.boot-line.spacer {
  min-height: 0.6em;
}

.boot-cursor {
  display: inline-block;
  color: var(--green);
  text-shadow: 0 0 12px rgba(117, 255, 197, 0.8);
  animation: blinkCursor 0.9s steps(1) infinite;
  margin-left: 2px;
}

@keyframes blinkCursor {
  0%, 49% {
    opacity: 1;
  }
  50%, 100% {
    opacity: 0;
  }
}

@keyframes flicker {
  0%, 18%, 22%, 24%, 26%, 50%, 57%, 100% {
    opacity: 1;
  }
  20%, 23%, 25%, 55% {
    opacity: 0.88;
  }
}

.warning {
  color: var(--red);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 800;
  text-shadow: 0 0 18px rgba(255, 77, 109, 0.55);
}

h2 {
  margin-top: 25px;
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  letter-spacing: 0.08em;
  color: var(--cyan);
  text-shadow: 0 0 12px rgba(110, 231, 255, 0.4);
}

.cipher-box {
  background: linear-gradient(180deg, rgba(15, 25, 34, 0.95), rgba(10, 18, 27, 0.95));
  border: 1px solid rgba(110, 231, 255, 0.28);
  border-radius: 12px;
  padding: 18px 20px;
  margin: 22px 0 18px;
  box-shadow: inset 0 0 18px rgba(110, 231, 255, 0.08), 0 0 24px rgba(110, 231, 255, 0.08);
}

.label {
  color: var(--muted);
  margin: 0;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cipher-text {
  margin: 10px 0 8px;
  font-size: clamp(1.5rem, 2.8vw, 2.15rem);
  letter-spacing: 0.26em;
  color: var(--green);
  text-shadow: 0 0 15px rgba(117, 255, 197, 0.7);
}

.hint {
  margin: 0;
  color: var(--yellow);
}

.answer-block {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 14px;
}

label {
  color: var(--muted);
}

input {
  flex: 1;
  min-width: 180px;
  background: rgba(5, 14, 18, 0.9);
  color: var(--green-soft);
  border: 1px solid rgba(110, 231, 255, 0.38);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 1rem;
  font-family: inherit;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  box-shadow: inset 0 0 14px rgba(110, 231, 255, 0.08);
}

input:focus {
  outline: none;
  border-color: rgba(117, 255, 197, 0.7);
  box-shadow: 0 0 18px rgba(117, 255, 197, 0.18);
}

button {
  appearance: none;
  border: none;
  border-radius: 10px;
  padding: 12px 20px;
  background: linear-gradient(135deg, var(--green), var(--cyan));
  color: #071611;
  font-size: 0.9rem;
  font-family: inherit;
  font-weight: 800;
  cursor: pointer;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
  box-shadow: 0 0 18px rgba(117, 255, 197, 0.28);
}

button:hover {
  transform: translateY(-1px);
  filter: brightness(1.08);
  box-shadow: 0 10px 24px rgba(117, 255, 197, 0.2);
}

.status-text {
  min-height: 24px;
  margin-top: 18px;
  font-weight: 700;
}

.status-text.success {
  color: var(--green);
  text-shadow: 0 0 12px rgba(117, 255, 197, 0.4);
}

.status-text.error {
  color: var(--red);
  text-shadow: 0 0 12px rgba(255, 77, 109, 0.4);
}

.final-panel {
  background: rgba(10, 16, 22, 0.95);
  border: 1px solid rgba(117, 255, 197, 0.24);
  border-radius: 20px;
  padding: 36px 30px;
  box-shadow:
    0 0 0 1px rgba(117, 255, 197, 0.08),
    0 0 32px rgba(117, 255, 197, 0.12),
    0 0 60px rgba(167, 139, 250, 0.08);
  text-align: center;
  max-height: calc(100vh - 60px);
  overflow-y: auto;
}

.success-badge {
  display: inline-block;
  background: rgba(117, 255, 197, 0.12);
  border: 1px solid rgba(117, 255, 197, 0.35);
  color: var(--green-soft);
  border-radius: 999px;
  padding: 10px 18px;
  letter-spacing: 0.12em;
  font-weight: 800;
  text-transform: uppercase;
  box-shadow: 0 0 18px rgba(117, 255, 197, 0.18);
}

.final-panel h1 {
  margin: 18px 0 8px;
  font-size: clamp(2rem, 4vw, 3.3rem);
  color: var(--green);
  text-shadow: 0 0 18px rgba(117, 255, 197, 0.4);
}

.subtitle {
  color: var(--muted);
  margin: 0 0 20px;
}

.message-card {
  max-width: 700px;
  margin: 24px auto 0;
  padding: 26px 24px;
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(18, 32, 38, 0.96), rgba(11, 17, 22, 0.96));
  border: 1px solid rgba(255, 209, 102, 0.2);
  text-align: left;
  line-height: 1.9;
  color: var(--text);
  box-shadow: inset 0 0 24px rgba(255, 209, 102, 0.04);
}

.signature {
  margin-top: 20px;
  color: var(--yellow);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.8rem;
  text-shadow: 0 0 14px rgba(255, 209, 102, 0.4);
}

.restore-window {
  border-color: rgba(110, 231, 255, 0.45);
}

.restore-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
}

.restore-warning {
  margin-bottom: 4px;
  color: var(--cyan);
}

.progress-block {
  margin-top: 20px;
  width: 100%;
}

.progress-label {
  margin-bottom: 10px;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}

.progress-wrap {
  position: relative;
  width: 100%;
  height: 18px;
  border-radius: 999px;
  background: rgba(8, 16, 22, 0.9);
  border: 1px solid rgba(110, 231, 255, 0.24);
  box-shadow: inset 0 0 12px rgba(110, 231, 255, 0.14);
  overflow: hidden;
}

.progress-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--cyan), var(--green), var(--yellow));
  box-shadow: 0 0 16px rgba(117, 255, 197, 0.42);
  transition: width 0.08s linear;
}

.progress-percent {
  margin-top: 12px;
  font-size: 1.1rem;
  letter-spacing: 0.14em;
  color: var(--green-soft);
  text-shadow: 0 0 12px rgba(117, 255, 197, 0.42);
}

@media (max-width: 640px) {
  body {
    padding: 12px;
  }

  .terminal-body {
    padding: 22px 18px 24px;
  }

  .answer-block {
    flex-direction: column;
    align-items: stretch;
  }

  .cipher-text {
    letter-spacing: 0.15em;
  }
}