/* Modern Retro-Futuristic Monochrome CSS Grid Terminal */
:root {
  --bg-color: #000000;
  --theme-color: #33ff33; /* Default phosphor green */
  --shadow-color: rgba(51, 255, 51, 0.45);
  --glow-radius: 8px;
  --scanline-opacity: 0.15;
  --font-family: 'Courier New', Courier, monospace;
  --flicker-dur: 0.15s;
}

/* State changes driven by JS toggle classes */
body.state-amber {
  --theme-color: #ffb000; /* Amber phosphor */
  --shadow-color: rgba(255, 176, 0, 0.45);
}

body.state-error {
  --theme-color: #ff3333; /* Warning Red */
  --shadow-color: rgba(255, 51, 51, 0.45);
}

body.state-terminal {
  --theme-color: #d8ffff; /* Blinding icy blue-white */
  --shadow-color: rgba(216, 255, 255, 0.8);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
  background-color: var(--bg-color);
  color: var(--theme-color);
  font-family: var(--font-family);
  overflow: hidden;
  position: relative;
  text-shadow: 0 0 var(--glow-radius) var(--shadow-color);
  transition: color 1.2s ease, text-shadow 1.2s ease;
}

/* CRT Screen Effect Overlay */
.crt-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    rgba(18, 16, 16, 0) 50%, 
    rgba(0, 0, 0, 0.25) 50%
  ), 
  linear-gradient(
    90deg, 
    rgba(255, 0, 0, 0.06), 
    rgba(0, 255, 0, 0.02), 
    rgba(0, 0, 255, 0.06)
  );
  background-size: 100% 4px, 6px 100%;
  z-index: 999;
  pointer-events: none;
  opacity: 0.85;
}

/* Scanline animation */
.crt-overlay::before {
  content: " ";
  display: block;
  position: absolute;
  top: 0; left: 0; bottom: 0; right: 0;
  background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.3) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.06));
  z-index: 1000;
  background-size: 100% 3px, 3px 100%;
  pointer-events: none;
}

.crt-vignette {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  box-shadow: inset 0 0 120px rgba(0,0,0,0.95);
  z-index: 1001;
  pointer-events: none;
}

/* Flicker Animation */
@keyframes crt-flicker {
  0% { opacity: 0.985; }
  50% { opacity: 0.95; }
  100% { opacity: 0.99; }
}

body.flicker-active {
  animation: crt-flicker var(--flicker-dur) infinite;
}

/* Terminal Screen Grid Layout */
#terminal-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: 24px;
  max-width: 900px;
  margin: 0 auto;
  border-left: 1px solid rgba(var(--theme-color), 0.2);
  border-right: 1px solid rgba(var(--theme-color), 0.2);
}

/* Header */
header {
  flex-shrink: 0;
  border-bottom: 2px double var(--theme-color);
  padding-bottom: 12px;
  margin-bottom: 16px;
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  letter-spacing: 2px;
  transition: border-color 1.2s ease;
}

.header-status {
  text-transform: uppercase;
}

/* Log Area */
main {
  flex-grow: 1;
  overflow-y: auto;
  padding-right: 8px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Hide Scrollbar for Chrome, Safari and Opera */
main::-webkit-scrollbar {
  display: none;
}

/* Hide Scrollbar for IE, Edge and Firefox */
main {
  -ms-overflow-style: none;  /* IE and Edge */
  scrollbar-width: none;  /* Firefox */
}

.message-entry {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sender-tag {
  font-weight: bold;
  letter-spacing: 1.5px;
  font-size: 0.9rem;
}

.message-content {
  line-height: 1.6;
  white-space: pre-wrap;
  font-size: 1rem;
}

.clinical-data {
  border: 1px dashed var(--theme-color);
  padding: 12px;
  background-color: rgba(0, 0, 0, 0.6);
  margin-top: 6px;
  font-family: monospace;
  font-size: 0.85rem;
}

.highlight-pulse {
  color: #ff3333;
  font-weight: bold;
  text-shadow: 0 0 8px rgba(255, 51, 51, 0.8);
  animation: pulse 1.5s infinite;
}

/* Footer / Command Line Input */
footer {
  flex-shrink: 0;
  border-top: 2px double var(--theme-color);
  padding-top: 16px;
  margin-top: 16px;
  display: flex;
  align-items: center;
  transition: border-color 1.2s ease;
}

.prompt-symbol {
  font-weight: bold;
  font-size: 1.2rem;
  margin-right: 12px;
  animation: pulse 1.5s infinite;
}

#command-input {
  flex-grow: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--theme-color);
  font-family: var(--font-family);
  font-size: 1.1rem;
  caret-shape: block;
  text-shadow: 0 0 var(--glow-radius) var(--shadow-color);
  transition: color 1.2s ease;
}

/* Pulsing prompt cursor */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* Config & Loader Modals */
.overlay-screen {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background-color: rgba(0, 0, 0, 0.98);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 2000;
  padding: 40px;
}

.screen-card {
  max-width: 600px;
  width: 100%;
  border: 2px solid var(--theme-color);
  padding: 30px;
  background-color: #000;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: 0 0 20px rgba(51, 255, 51, 0.15);
  transition: border-color 1.2s ease, box-shadow 1.2s ease;
}

.screen-card h1 {
  font-size: 1.5rem;
  text-align: center;
  border-bottom: 1px solid var(--theme-color);
  padding-bottom: 12px;
  letter-spacing: 3px;
  transition: border-color 1.2s ease;
}

.screen-card p {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--theme-color);
}

.setup-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.8rem;
  letter-spacing: 1px;
}

.retro-select {
  background-color: #000;
  border: 1px solid var(--theme-color);
  color: var(--theme-color);
  padding: 10px;
  font-family: var(--font-family);
  font-size: 0.95rem;
  outline: none;
  cursor: pointer;
  text-shadow: 0 0 var(--glow-radius) var(--shadow-color);
  transition: border-color 1.2s ease, color 1.2s ease;
}

.retro-select option {
  background-color: #000;
}

.retro-btn {
  background-color: var(--theme-color);
  color: #000;
  border: none;
  padding: 12px;
  font-family: var(--font-family);
  font-weight: bold;
  font-size: 1rem;
  cursor: pointer;
  letter-spacing: 2px;
  text-shadow: none;
  transition: background-color 0.3s, opacity 0.3s;
}

.retro-btn:hover {
  opacity: 0.9;
}

.retro-btn:disabled {
  background-color: #222;
  color: #666;
  cursor: not-allowed;
}

/* Stylized Status Log Bar */
.progress-bar-container {
  width: 100%;
  height: 24px;
  border: 1px solid var(--theme-color);
  position: relative;
  overflow: hidden;
  margin-top: 8px;
  transition: border-color 1.2s ease;
}

.progress-bar-fill {
  height: 100%;
  background-color: var(--theme-color);
  width: 0%;
  transition: width 0.3s ease;
}

.progress-telemetry-text {
  text-align: center;
  font-size: 0.8rem;
  margin-top: 12px;
  font-family: monospace;
}

.hidden {
  display: none !important;
}

/* Glitch effect on state change or error */
@keyframes screen-glitch {
  0% { transform: translate(0, 0) skewX(0deg); }
  10% { transform: translate(-2px, 1px) skewX(-2deg); }
  20% { transform: translate(1px, -1px) skewX(1deg); }
  30% { transform: translate(0, 0) skewX(0deg); }
  40% { transform: translate(-1px, 2px) skewX(3deg); }
  50% { transform: translate(2px, -2px) skewX(-1deg); }
  60% { transform: translate(0, 0) skewX(0deg); }
  100% { transform: translate(0, 0) skewX(0deg); }
}

.glitch-shake {
  animation: screen-glitch 0.4s ease-out;
}