:root {
  --neon-primary: #00f0ff;
  /* Blue - Normal Mode */
  --neon-secondary: #ff0096;
  /* Pink - Accent */
  --bg-dark: #0a0f18;
  --bg-panel: #141a26;
  --text-main: #e0e0e0;
}

body.interview-mode {
  --neon-primary: #be29ec;
  /* Purple - Interview Mode */
  /* Purple - Interview Mode */
  --neon-secondary: #ccff00;
  /* Green Yellow - User Message */
}

/* Contrast fix for bright background */
body.interview-mode .user-message p {
  color: #0d121c;
  /* Dark text for contrast */
  font-weight: 600;
}

/* Switch Styles Update */
.mode-toggle-container {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.mode-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--neon-primary);
  text-transform: uppercase;
  transition: color 0.3s ease;
}

body.interview-mode .mode-label:last-child {
  color: var(--neon-primary);
  /* Active label glow */
  text-shadow: 0 0 5px var(--neon-primary);
}

body.interview-mode .mode-label:first-child {
  color: #555;
  /* Dim inactive label */
  text-shadow: none;
}

body:not(.interview-mode) .mode-label:first-child {
  color: var(--neon-primary);
  text-shadow: 0 0 5px var(--neon-primary);
}

body:not(.interview-mode) .mode-label:last-child {
  color: #555;
  text-shadow: none;
}

body {
  font-family: 'Roboto Mono', monospace;
  margin: 0;
  background-color: var(--bg-dark);
  color: var(--text-main);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 1rem;
  box-sizing: border-box;
}

#app-container {
  background-color: var(--bg-panel);
  /* Slightly lighter dark shade */
  border: 1px solid var(--neon-primary);
  /* Neon blue border */
  box-shadow: 0 0 25px rgba(0, 240, 255, 0.3), 0 0 10px rgba(255, 0, 150, 0.2) inset;
  /* Neon glow */
  width: 100%;
  max-width: 750px;
  height: 90vh;
  max-height: 850px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: 4px;
  /* Sharper edges */
  transition: box-shadow 0.3s ease-in-out, border-color 0.3s ease-in-out;
}

@keyframes pulse-glow-animation {
  0% {
    box-shadow: 0 0 25px rgba(0, 240, 255, 0.3), 0 0 10px rgba(255, 0, 150, 0.2) inset, 0 0 10px rgba(0, 240, 255, 0.4);
    border-color: #00f0ff;
  }

  50% {
    box-shadow: 0 0 40px rgba(0, 240, 255, 0.7), 0 0 15px rgba(255, 0, 150, 0.4) inset, 0 0 25px rgba(255, 0, 150, 0.6);
    border-color: #ff0096;
  }

  100% {
    box-shadow: 0 0 25px rgba(0, 240, 255, 0.3), 0 0 10px rgba(255, 0, 150, 0.2) inset, 0 0 10px rgba(0, 240, 255, 0.4);
    border-color: #00f0ff;
  }
}

#app-container.loading-glow {
  animation: pulse-glow-animation 1.8s infinite ease-in-out;
}

@keyframes blink-animation {
  0% {
    opacity: 1;
  }

  50% {
    opacity: 0.2;
  }

  100% {
    opacity: 1;
  }
}

.blink-message {
  animation: blink-animation 0.5s infinite;
  color: var(--neon-secondary) !important;
  font-weight: bold;
}

header {
  background: linear-gradient(45deg, #0d121c, #1a2333);
  color: var(--neon-primary);
  /* Neon blue */
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--neon-primary);
  text-shadow: 0 0 5px var(--neon-primary);
}

#hana-avatar {
  width: 60px;
  /* Increased size */
  height: 60px;
  /* Increased size */
  border-radius: 50%;
  border: 3px solid var(--neon-primary);
  /* Slightly thicker border */
  margin-right: 1rem;
  object-fit: cover;
  box-shadow: 0 0 12px var(--neon-primary);
  /* Enhanced glow */
}

header h1 {
  margin: 0;
  font-family: 'Orbitron', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 1px;
  flex-grow: 1;
  text-align: left;
}

main {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  overflow-y: hidden;
}

#chat-log {
  flex-grow: 1;
  padding: 1rem 1.5rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  scrollbar-width: thin;
  scrollbar-color: var(--neon-primary) var(--bg-panel);
}

#chat-log::-webkit-scrollbar {
  width: 8px;
}

#chat-log::-webkit-scrollbar-track {
  background: var(--bg-panel);
}

#chat-log::-webkit-scrollbar-thumb {
  background-color: var(--neon-primary);
  border-radius: 4px;
  border: 1px solid var(--bg-dark);
}

.message {
  display: flex;
  max-width: 85%;
}

.message p {
  padding: 0.65rem 1.1rem;
  border-radius: 6px;
  line-height: 1.6;
  margin: 0;
  word-break: break-word;
  border: 1px solid transparent;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}

.user-message {
  align-self: flex-end;
  margin-left: auto;
}

.user-message p {
  background-color: var(--neon-secondary);
  color: #ffffff;
  border-color: var(--neon-secondary);
  border-bottom-right-radius: 0;
}

.bot-message {
  align-self: flex-start;
}

.bot-message p {
  background-color: #2a3649;
  color: #c0d0f0;
  border-color: var(--neon-primary);
  border-bottom-left-radius: 0;
}

#chat-form {
  display: flex;
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--neon-primary);
  background-color: #0d121c;
}

#message-input {
  flex-grow: 1;
  padding: 0.75rem 1rem;
  background-color: #1c2533;
  border: 1px solid #007bff;
  border-radius: 4px;
  font-size: 1rem;
  font-family: 'Roboto Mono', monospace;
  color: #e0e0e0;
  margin-right: 0.75rem;
  outline: none;
}

#message-input::placeholder {
  color: #607088;
}

#message-input:focus {
  border-color: var(--neon-primary);
  box-shadow: 0 0 8px var(--neon-primary);
}

#message-input:disabled {
  background-color: #252a3a;
  color: #555;
}

#send-button {
  padding: 0.75rem 1.5rem;
  background-color: var(--neon-primary);
  color: var(--bg-dark);
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

#send-button:hover:not(:disabled) {
  background-color: var(--neon-secondary);
  color: #ffffff;
  box-shadow: 0 0 10px var(--neon-secondary);
}

#send-button:disabled {
  background-color: #404a5c;
  color: #777;
  cursor: not-allowed;
  box-shadow: none;
}

/* Toggle Switch Styles - Reinforced */
.mode-toggle-container {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}

.switch {
  position: relative;
  display: inline-block;
  width: 60px;
  height: 30px;
  flex-shrink: 0;
}

/* Hide default checkbox */
.switch input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #333;
  /* Darker default for contrast */
  border: 1px solid var(--neon-primary);
  transition: .4s;
  border-radius: 34px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 22px;
  width: 22px;
  left: 3px;
  bottom: 3px;
  background-color: var(--neon-primary);
  transition: .4s;
  border-radius: 50%;
  box-shadow: 0 0 5px var(--neon-primary);
}

.switch input:checked+.slider {
  background-color: #2a0a3a;
  /* Dark purple background when checked */
  border-color: var(--neon-primary);
  /* Keeps dynamic color */
}

.switch input:checked+.slider:before {
  transform: translateX(30px);
  background-color: var(--neon-primary);
  /* Keeps dynamic color */
}

footer {
  padding: 0.75rem 1.5rem;
  /* Increased padding slightly */
  font-size: 0.75rem;
  color: var(--neon-primary);
  background-color: #0d121c;
  border-top: 1px solid #007bff;
  font-family: 'Roboto Mono', monospace;
  letter-spacing: 1px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

#memory-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-grow: 1;
  /* Allow it to take available space */
}

#upload-memory-button {
  padding: 0.5rem 1rem;
  background-color: #007bff;
  /* Blue, secondary action */
  color: white;
  border: 1px solid #0056b3;
  border-radius: 4px;
  font-family: 'Orbitron', sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.2s ease;
  text-transform: uppercase;
}

#upload-memory-button:hover {
  background-color: #0056b3;
}

#memory-status {
  font-size: 0.7rem;
  color: var(--neon-primary);
  /* Neon blue for status text */
  margin: 0;
  flex-shrink: 0;
  /* Prevent shrinking if button text is long */
}

#system-status-footer {
  margin: 0;
  /* remove default p margin */
  text-align: right;
}


/* Accessibility */
[aria-busy="true"] {
  cursor: wait;
}

/* Responsive adjustments */
@media (max-width: 700px) {

  /* Adjusted breakpoint slightly for footer content */
  footer {
    flex-direction: column;
    align-items: center;
    /* Center items in column layout */
  }

  #memory-controls {
    width: 100%;
    justify-content: center;
    /* Center memory controls */
    margin-bottom: 8px;
  }

  #system-status-footer {
    text-align: center;
    /* Center system status */
    width: 100%;
  }
}

@media (max-width: 600px) {
  body {
    padding: 0;
  }

  #app-container {
    border-radius: 0;
    border: none;
    height: 100vh;
    max-height: none;
    box-shadow: none;
  }

  header {
    padding: 0.5rem 1rem;
  }

  #hana-avatar {
    width: 50px;
    /* Slightly smaller for very small screens */
    height: 50px;
    border-width: 2px;
    margin-right: 0.75rem;
  }

  header h1 {
    font-size: 1.2rem;
  }

  #chat-log {
    padding: 0.75rem;
  }

  #chat-form {
    padding: 0.75rem;
  }

  #message-input {
    padding: 0.6rem 0.8rem;
    font-size: 0.9rem;
  }

  #send-button {
    padding: 0.6rem 1rem;
    font-size: 0.9rem;
  }

  footer {
    /* Footer already adjusted, but ensure consistent font size */
    font-size: 0.7rem;
    padding: 0.5rem 1rem;
  }

  #upload-memory-button {
    font-size: 0.75rem;
    padding: 0.4rem 0.8rem;
  }

  #memory-status {
    font-size: 0.65rem;
  }
}

/* Heart Monitor Lines */
#heart-monitor-container {
  position: absolute;
  bottom: 40px;
  /* Above footer */
  left: 0;
  width: 100%;
  height: 20px;
  pointer-events: none;
  z-index: 10;
  overflow: hidden;
}

.monitor-line {
  position: absolute;
  top: 50%;
  height: 2px;
  width: 100%;
  background: transparent;
  transform: translateY(-50%);
}

#monitor-line-left {
  left: 0;
}

#monitor-line-right {
  right: 0;
}

/* Base line appearance */
.monitor-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.05);
  /* Faint base line */
}

/* Animations */
@keyframes heart-beat-ltr {
  0% {
    left: -10%;
    opacity: 0;
  }

  10% {
    opacity: 1;
  }

  90% {
    opacity: 1;
  }

  100% {
    left: 110%;
    opacity: 0;
  }
}

@keyframes heart-beat-rtl {
  0% {
    right: -10%;
    opacity: 0;
  }

  10% {
    opacity: 1;
  }

  90% {
    opacity: 1;
  }

  100% {
    right: 110%;
    opacity: 0;
  }
}

/* Applying animation classes */
.animate-ltr::before {
  content: '';
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40%;
  /* More extensive color */
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon-primary), transparent);
  box-shadow: 0 0 15px var(--neon-primary);
  /* Enhanced glow */
  animation: heart-beat-ltr 3s linear infinite;
  /* Longer duration */
}

.animate-rtl::before {
  content: '';
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40%;
  /* More extensive color */
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon-secondary), transparent);
  box-shadow: 0 0 15px var(--neon-secondary);
  /* Enhanced glow */
  animation: heart-beat-rtl 3s linear infinite;
  /* Longer duration */
}

/* Interview mode adjustments */
body.interview-mode #monitor-line-left.animate-ltr::before {
  background: linear-gradient(90deg, transparent, var(--neon-primary), transparent);
  box-shadow: 0 0 10px var(--neon-primary);
}

body.interview-mode #monitor-line-right.animate-rtl::before {
  background: linear-gradient(90deg, transparent, var(--neon-secondary), transparent);
  box-shadow: 0 0 10px var(--neon-secondary);
}
/* Typing Indicator */
.message.typing {
  color: var(--neon-secondary);
  font-style: italic;
  font-size: 0.9em;
  opacity: 0.8;
  display: flex;
  align-items: center;
  gap: 4px;
}

.typing-dot {
  width: 6px;
  height: 6px;
  background: var(--neon-secondary);
  border-radius: 50%;
  animation: typingBounce 1.4s infinite ease-in-out both;
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typingBounce {
  0%, 80%, 100% { transform: scale(0); opacity: 0.5; }
  40% { transform: scale(1); opacity: 1; }
}