:root {
  --neon-cyan: #4fffe1;
  --neon-gold: #ffd24a;
  --deep-panel: rgba(7, 18, 16, .82);
  --text-panel: #d7fff7;
  --bottom-panel-height: clamp(170px, 22svh, 230px);
  --scan-min-top: 190px;
  --scan-size: 100vw;
  --scan-top: max(var(--scan-min-top), calc(100svh - var(--scan-size) - var(--bottom-panel-height)));
  --scan-bottom: calc(100svh - var(--scan-top) - var(--scan-size));
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
}

body {
  background: #000;
  color: var(--text-panel);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
  touch-action: manipulation;
  user-select: none;
}

button {
  font: inherit;
}

#container {
  position: fixed;
  top: var(--scan-top);
  right: 0;
  bottom: auto;
  left: 0;
  z-index: 0;
  height: var(--scan-size);
  overflow: hidden;
  background: #000;
}

#video {
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--camera-cover-width, 100%);
  height: var(--camera-cover-height, 100%);
  min-width: 100%;
  min-height: 100%;
  max-width: none;
  max-height: none;
  display: block;
  transform: translate(-50%, -50%);
  object-fit: cover !important;
  background: #000;
}

#zdkc-app {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}

.top-panel,
.bottom-panel {
  position: absolute;
  left: 0;
  right: 0;
  background: #000;
  pointer-events: auto;
}

.top-panel {
  top: 0;
  height: var(--scan-top);
  padding: calc(env(safe-area-inset-top, 0px) + 54px) 0 0 20px;
  overflow: hidden;
}

.top-panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 94px;
  opacity: .42;
  background:
    linear-gradient(90deg, transparent 0 6%, rgba(79, 255, 225, .5) 6% 6.8%, transparent 6.8% 30%, rgba(79, 255, 225, .36) 30% 30.4%, transparent 30.4% 48%, rgba(79, 255, 225, .32) 48% 48.4%, transparent 48.4% 72%, rgba(79, 255, 225, .42) 72% 72.5%, transparent 72.5%),
    linear-gradient(180deg, transparent 0 64%, rgba(79, 255, 225, .5) 64% 66%, transparent 66%),
    linear-gradient(135deg, transparent 0 43%, rgba(79, 255, 225, .16) 43% 44%, transparent 44%);
}

.top-panel::after {
  content: "";
  position: absolute;
  top: 60px;
  left: 60px;
  right: 60px;
  height: 32px;
  border-top: 2px solid rgba(79, 255, 225, .32);
  border-left: 2px solid rgba(79, 255, 225, .32);
  border-right: 2px solid rgba(79, 255, 225, .32);
}

.sci-grid {
  position: absolute;
  inset: 0 0 auto;
  height: 96px;
  background:
    repeating-linear-gradient(90deg, transparent 0 44px, rgba(79, 255, 225, .12) 44px 45px, transparent 45px 90px),
    repeating-linear-gradient(0deg, transparent 0 95px, rgba(79, 255, 225, .08) 95px 96px, transparent 96px 192px);
  opacity: .45;
  pointer-events: none;
}

#app_title {
  position: relative;
  z-index: 1;
  margin: 0;
  color: var(--neon-gold);
  font-size: 24px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0;
  text-shadow: 0 0 8px rgba(255, 210, 74, .2);
}

.menu-bar {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  margin-top: 10px;
}

.sci-button {
  width: 62px;
  height: 34px;
  min-width: 0;
  min-height: 0;
  padding: 0 6px;
  border: 1px solid var(--neon-cyan);
  border-radius: 4px;
  background: rgba(9, 20, 18, .7);
  color: var(--neon-cyan);
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  box-shadow: inset 0 0 10px rgba(79, 255, 225, .08), 0 0 7px rgba(79, 255, 225, .1);
}

.sci-button:active {
  border-color: var(--neon-gold);
  background: rgba(79, 255, 225, .2);
}

.sci-button-wide {
  width: 76px;
}

.receive-progress-panel {
  position: relative;
  z-index: 1;
  width: calc(100vw - 68px);
  margin: 14px 34px 0 14px;
  padding: 12px 16px 10px;
  border: 1px solid rgba(79, 255, 225, .54);
  border-radius: 5px;
  background: var(--deep-panel);
  text-align: center;
}

.receive-progress-panel[hidden] {
  display: none;
}

#progress_bars {
  width: 100%;
  min-height: 8px;
  border: 1px solid rgba(79, 255, 225, .4);
  border-radius: 3px;
  background: rgba(9, 20, 18, .55);
  overflow: hidden;
}

#progress_bars .progress {
  display: block;
  width: 0;
  height: 6px;
  max-width: 100%;
  border: 0;
  border-radius: 2px;
  background: var(--neon-gold);
}

#progress_bars .progress:nth-child(n+2) {
  display: none;
}

#receive_progress_text {
  margin-top: 7px;
  color: var(--text-panel);
  font-size: 13px;
  line-height: 1.25;
}

.bottom-panel {
  bottom: 0;
  height: max(var(--bottom-panel-height), var(--scan-bottom));
}

#status_panel {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: calc(env(safe-area-inset-bottom, 0px) + 52px);
  min-height: 56px;
  padding: 14px;
  border: 1px solid rgba(79, 255, 225, .54);
  border-radius: 5px;
  background: var(--deep-panel);
  color: var(--text-panel);
  font-size: 14px;
  line-height: 1.45;
  text-align: center;
  white-space: pre-line;
}

#status_panel.is-actionable {
  color: #fff8d0;
  border-color: rgba(255, 210, 74, .72);
}

#bottom_light {
  position: absolute;
  left: 36px;
  right: 36px;
  bottom: calc(env(safe-area-inset-bottom, 0px) + 28px);
  height: 2px;
  background: var(--neon-gold);
  box-shadow: 0 0 10px rgba(255, 210, 74, .25);
}

.crosshairs {
  position: fixed;
  z-index: 3;
  width: 34vw;
  height: 30vw;
  pointer-events: none;
  border-color: rgba(255, 255, 255, .96) !important;
}

#crosshair1 {
  top: var(--scan-top) !important;
  right: 0 !important;
  border-top: 4px solid;
  border-right: 4px solid;
}

#crosshair2 {
  bottom: var(--scan-bottom) !important;
  left: 0 !important;
  border-left: 4px solid;
  border-bottom: 4px solid;
}

#crosshair3 {
  top: var(--scan-top) !important;
  left: 0 !important;
  border-top: 4px solid;
  border-left: 4px solid;
}

#crosshair4 {
  right: 0 !important;
  bottom: var(--scan-bottom) !important;
  border-right: 4px solid;
  border-bottom: 4px solid;
}

.crosshairs.scanning_xhairs {
  border-color: var(--neon-gold) !important;
}

.crosshairs.active_xhairs {
  border-color: var(--neon-cyan) !important;
}

.camera-start {
  position: fixed;
  top: calc(var(--scan-top) + (var(--scan-size) / 2) - 24px);
  left: 50%;
  z-index: 5;
  min-width: 168px;
  min-height: 48px;
  padding: 0 18px;
  transform: translateX(-50%);
  border: 1px solid rgba(255, 210, 74, .78);
  border-radius: 5px;
  background: rgba(7, 18, 16, .9);
  color: var(--neon-gold);
  font-size: 15px;
  font-weight: 700;
  box-shadow: 0 0 16px rgba(255, 210, 74, .18);
  pointer-events: auto;
}

.camera-start[hidden] {
  display: none;
}

#nav-container,
#debug_menu {
  position: fixed;
  top: 0;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

#nav-content,
#nav-button,
#debug-button {
  width: 1px;
  height: 1px;
  padding: 0;
  border: 0;
  opacity: 0;
}

.app-dialog {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(0, 0, 0, .64);
}

.app-dialog[hidden] {
  display: none;
}

.dialog-card {
  width: min(320px, calc(100vw - 40px));
  border: 1px solid rgba(79, 255, 225, .62);
  border-radius: 6px;
  background: rgba(8, 15, 18, .96);
  color: var(--text-panel);
  box-shadow: 0 18px 40px rgba(0, 0, 0, .52);
}

#dialog_title {
  margin: 0;
  padding: 18px 18px 10px;
  color: var(--neon-gold);
  font-size: 18px;
  line-height: 1.3;
  letter-spacing: 0;
}

#dialog_body {
  padding: 0 18px 16px;
  color: var(--text-panel);
  font-size: 14px;
  line-height: 1.6;
  white-space: pre-line;
}

.dialog-actions {
  display: grid;
  gap: 8px;
  padding: 0 18px 18px;
}

.dialog-actions button {
  min-height: 40px;
  border: 1px solid rgba(79, 255, 225, .65);
  border-radius: 4px;
  background: rgba(9, 20, 18, .82);
  color: var(--neon-cyan);
  font-size: 14px;
  font-weight: 700;
}

.dialog-actions button.secondary {
  border-color: rgba(255, 210, 74, .55);
  color: var(--neon-gold);
}

#app_toast {
  position: fixed;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom, 0px) + 114px);
  z-index: 12;
  max-width: calc(100vw - 48px);
  transform: translateX(-50%);
  padding: 10px 14px;
  border-radius: 4px;
  background: rgba(7, 18, 16, .94);
  color: var(--text-panel);
  font-size: 13px;
  line-height: 1.35;
  text-align: center;
}

#app_toast[hidden] {
  display: none;
}