/* BlinkByte Cyberpunk Styling System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600&family=Orbitron:wght@500;700;900&family=Share+Tech+Mono&display=swap');

:root {
  --bg-color: #050508;
  --bg-card: rgba(13, 15, 24, 0.7);
  --bg-card-hover: rgba(22, 26, 42, 0.8);
  --border-color: rgba(0, 240, 255, 0.15);
  --border-color-glow: rgba(0, 240, 255, 0.4);
  
  --neon-cyan: #00f0ff;
  --neon-green: #39ff14;
  --neon-pink: #ff007f;
  --neon-orange: #ff5f00;
  
  --text-main: #e2e8f0;
  --text-muted: #8a99ad;
  --text-dark: #0d0f18;
  
  --font-header: 'Orbitron', sans-serif;
  --font-mono: 'Share Tech Mono', monospace;
  --font-body: 'Inter', sans-serif;
  
  --glow-cyan: 0 0 10px rgba(0, 240, 255, 0.4), 0 0 20px rgba(0, 240, 255, 0.2);
  --glow-green: 0 0 10px rgba(57, 255, 20, 0.4), 0 0 20px rgba(57, 255, 20, 0.2);
  --glow-pink: 0 0 10px rgba(255, 0, 127, 0.4), 0 0 20px rgba(255, 0, 127, 0.2);
}

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

body {
  background-color: var(--bg-color);
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(0, 240, 255, 0.03) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(255, 0, 127, 0.03) 0%, transparent 40%),
    linear-gradient(rgba(18, 18, 26, 0.2) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 18, 26, 0.2) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 24px 24px, 24px 24px;
  color: var(--text-main);
  font-family: var(--font-body);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-color);
}
::-webkit-scrollbar-thumb {
  background: rgba(0, 240, 255, 0.2);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--neon-cyan);
  box-shadow: var(--glow-cyan);
}

/* Typography & Layout */
.app-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header {
  margin-bottom: 2.5rem;
  text-align: center;
  position: relative;
}

.brand-title {
  font-family: var(--font-header);
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #ffffff;
  text-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
  margin-bottom: 0.25rem;
  display: inline-block;
  position: relative;
}

.brand-title::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
}

.brand-tagline {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--neon-cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-shadow: var(--glow-cyan);
}

/* Grid Panel Systems */
.panels-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  flex-grow: 1;
}

@media (max-width: 850px) {
  .panels-grid {
    grid-template-columns: 1fr;
  }
}

/* Glassmorphic Cyber Cards */
.cyber-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), inset 0 1px 1px rgba(255, 255, 255, 0.05);
  transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.cyber-card:hover {
  border-color: var(--border-color-glow);
  box-shadow: 0 15px 40px rgba(0, 240, 255, 0.08), inset 0 1px 1px rgba(255, 255, 255, 0.08);
}

.cyber-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 12px;
  height: 12px;
  border-top: 2px solid var(--neon-cyan);
  border-left: 2px solid var(--neon-cyan);
}

.cyber-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 12px;
  height: 12px;
  border-bottom: 2px solid var(--neon-cyan);
  border-right: 2px solid var(--neon-cyan);
}

.card-title {
  font-family: var(--font-header);
  font-size: 1.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.card-title .icon {
  width: 8px;
  height: 24px;
  display: inline-block;
}

.card-title-send { color: var(--neon-pink); }
.card-title-send .icon { background: var(--neon-pink); box-shadow: var(--glow-pink); }

.card-title-receive { color: var(--neon-cyan); }
.card-title-receive .icon { background: var(--neon-cyan); box-shadow: var(--glow-cyan); }

/* Form Controls */
.form-group {
  margin-bottom: 1.25rem;
}

label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.cyber-input {
  width: 100%;
  background: rgba(8, 9, 15, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: all 0.2s ease;
}

.cyber-input:focus {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 8px rgba(0, 240, 255, 0.25);
}

.cyber-input[type="file"] {
  display: none;
}

/* File Drop Zone */
.dropzone {
  border: 2px dashed rgba(255, 0, 127, 0.2);
  border-radius: 8px;
  padding: 2.5rem 1.5rem;
  text-align: center;
  cursor: pointer;
  background: rgba(255, 0, 127, 0.01);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 160px;
  margin-bottom: 1.5rem;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--neon-pink);
  background: rgba(255, 0, 127, 0.04);
  box-shadow: 0 0 15px rgba(255, 0, 127, 0.08);
}

.dropzone-icon {
  font-size: 2.5rem;
  color: var(--neon-pink);
  margin-bottom: 0.75rem;
  text-shadow: var(--glow-pink);
}

.dropzone-text {
  font-family: var(--font-mono);
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.dropzone-subtext {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Selected File HUD */
.file-hud {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.file-hud-info {
  display: flex;
  flex-direction: column;
}

.file-name {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--neon-pink);
  text-shadow: var(--glow-pink);
}

.file-size {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.file-remove {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.25rem;
  line-height: 1;
}

.file-remove:hover {
  color: var(--neon-pink);
}

/* Settings Drawer / Accordion */
.settings-toggle {
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  cursor: pointer;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  align-self: flex-start;
}

.settings-toggle:hover {
  color: var(--neon-cyan);
}

.settings-toggle span {
  font-size: 0.6rem;
  transition: transform 0.2s ease;
}

.settings-toggle.open span {
  transform: rotate(90deg);
}

.settings-content {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.02);
}

.settings-content.open {
  display: grid;
}

/* Buttons */
.cyber-btn {
  background: transparent;
  border: 1px solid var(--neon-cyan);
  border-radius: 6px;
  padding: 0.9rem 1.5rem;
  color: var(--neon-cyan);
  font-family: var(--font-header);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  box-shadow: inset 0 0 0 rgba(0, 240, 255, 0);
  width: 100%;
}

.cyber-btn:hover:not(:disabled) {
  background: var(--neon-cyan);
  color: var(--text-dark);
  box-shadow: var(--glow-cyan);
}

.cyber-btn:active:not(:disabled) {
  transform: scale(0.98);
}

.cyber-btn:disabled {
  border-color: rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  cursor: not-allowed;
}

.cyber-btn-send {
  border-color: var(--neon-pink);
  color: var(--neon-pink);
}

.cyber-btn-send:hover:not(:disabled) {
  background: var(--neon-pink);
  color: var(--text-dark);
  box-shadow: var(--glow-pink);
}

/* QR Code Display Container */
.qr-stream-container {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex-grow: 1;
  margin-top: 1rem;
}

.qr-canvas-wrapper {
  position: relative;
  background: #ffffff;
  padding: 12px;
  border-radius: 8px;
  box-shadow: 0 0 30px rgba(0, 240, 255, 0.15);
  margin-bottom: 1.5rem;
  max-width: 320px;
  width: 100%;
  aspect-ratio: 1;
}

.qr-canvas-wrapper::before {
  content: '';
  position: absolute;
  top: -6px; left: -6px; right: -6px; bottom: -6px;
  border: 1px solid var(--neon-pink);
  border-radius: 12px;
  pointer-events: none;
  animation: pulse-border 2s infinite ease-in-out;
}

@keyframes pulse-border {
  0%, 100% { transform: scale(1); opacity: 0.3; }
  50% { transform: scale(1.02); opacity: 0.8; }
}

.qr-stream-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Live Diagnostics HUD */
.diagnostics-hud {
  font-family: var(--font-mono);
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 6px;
  padding: 1rem;
  margin-bottom: 1rem;
  font-size: 0.85rem;
}

.hud-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.4rem;
}

.hud-row:last-child {
  margin-bottom: 0;
}

.hud-label {
  color: var(--text-muted);
}

.hud-value {
  color: var(--neon-cyan);
}

.hud-value.pink {
  color: var(--neon-pink);
}

.hud-value.green {
  color: var(--neon-green);
  text-shadow: var(--glow-green);
}

/* Real-Time Camera scanner HUD */
.scanner-viewport-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  background: #040406;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-color);
}

.scanner-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scaleX(-1); /* mirror webcam */
}

/* Hidden canvas used for scanning extraction */
.hidden-canvas {
  display: none;
}

.scanner-overlay {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.scanner-target-box {
  width: 60%;
  aspect-ratio: 1;
  border: 2px solid rgba(0, 240, 255, 0.3);
  position: relative;
  box-shadow: 0 0 0 9999px rgba(5, 5, 8, 0.6);
}

.scanner-target-box::before {
  content: '';
  position: absolute;
  top: -4px; left: -4px; right: -4px; bottom: -4px;
  border: 2px solid var(--neon-cyan);
  border-radius: 4px;
  box-shadow: var(--glow-cyan);
  animation: box-glow 2s infinite ease-in-out;
}

@keyframes box-glow {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

.scanner-laser-line {
  position: absolute;
  width: 100%;
  height: 3px;
  background: var(--neon-cyan);
  box-shadow: var(--glow-cyan);
  animation: scan 3s infinite linear;
}

@keyframes scan {
  0% { top: 0%; }
  50% { top: 100%; }
  100% { top: 0%; }
}

/* Packets Reception Grid */
.packet-grid-wrapper {
  margin-top: 1rem;
}

.packet-grid-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  display: flex;
  justify-content: space-between;
}

.packet-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(12px, 1fr));
  gap: 3px;
  padding: 0.75rem;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 6px;
  max-height: 120px;
  overflow-y: auto;
}

.packet-node {
  aspect-ratio: 1;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 1px;
  transition: background-color 0.2s ease;
}

.packet-node.received {
  background: var(--neon-green);
  box-shadow: 0 0 5px rgba(57, 255, 20, 0.8);
}

.packet-node.metadata {
  background: var(--neon-cyan);
  box-shadow: 0 0 5px rgba(0, 240, 255, 0.8);
}

/* Dialog / Prompt Modal */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(4, 4, 6, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  width: 90%;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
  position: relative;
  transform: translateY(20px);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-overlay.active .modal-card {
  transform: translateY(0);
}

.modal-header {
  font-family: var(--font-header);
  color: var(--neon-cyan);
  font-size: 1.25rem;
  text-transform: uppercase;
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
  text-shadow: var(--glow-cyan);
}

.modal-body {
  margin-bottom: 1.5rem;
}

.modal-actions {
  display: flex;
  gap: 1rem;
}

.modal-btn {
  padding: 0.6rem 1.2rem;
  font-size: 0.9rem;
}

.modal-btn-cancel {
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--text-muted);
}
.modal-btn-cancel:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

/* File Save HUD (Success State) */
.success-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 2rem 1rem;
}

.success-icon {
  font-size: 3.5rem;
  color: var(--neon-green);
  margin-bottom: 1rem;
  text-shadow: var(--glow-green);
}

.success-title {
  font-family: var(--font-header);
  color: var(--neon-green);
  text-transform: uppercase;
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.success-file-details {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-main);
  margin-bottom: 1.5rem;
  background: rgba(0, 0, 0, 0.3);
  padding: 0.75rem 1rem;
  border-radius: 6px;
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.02);
}

/* Status Indicators */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.75rem;
  border-radius: 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.status-pill.active {
  background: rgba(0, 240, 255, 0.05);
  border-color: rgba(0, 240, 255, 0.2);
  color: var(--neon-cyan);
}

.status-pill.active .indicator-dot {
  background: var(--neon-cyan);
  box-shadow: var(--glow-cyan);
  animation: pulse-dot 1.5s infinite;
}

.status-pill.idle {
  color: var(--text-muted);
}

.status-pill.idle .indicator-dot {
  background: var(--text-muted);
}

.indicator-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

footer {
  margin-top: auto;
  padding-top: 3rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

footer a {
  color: var(--neon-cyan);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
  text-shadow: var(--glow-cyan);
}