:root{
    --bg: #050508;
    --panel: #0a0a10;
    --border: #1a1a2e;
    --accentHead: rgb(118, 174, 222); /* head */
    --accentArms: rgb(255, 136, 17); /* arms */
    --accentTorso: rgb(160, 59, 171); /* torso */
    --accentLegs: rgb(29, 127, 16); /* legs */
    --text:    #e0e0f0; 
    --labels:     #4a4a6a;
}

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'IBM Plex Mono', monospace;
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1000;
  opacity: 0.35;
}

.header {
    display: flex;
    align-items: baseline;
    gap: 20px;
    padding: 0px 32px;
    border-bottom: 1px solid var(--border);
    position: relative;
    z-index: 10;
}

.header-logo {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(22px, 3vw, 36px);
    color: var(--accentHead);
    text-shadow: 0 0 20px rgba(0, 245, 196, 0.4);
    text-transform: uppercase;
    flex: 1;
    text-align: center;
}

.main-grid {
    display: grid;
    grid-template-columns: 420px 1fr;
    grid-template-rows: 1fr auto;
    gap: 2px;
    padding: 2px;
    flex: 1;
    min-height: 0; 
    overflow: hidden;
    height: 100%;
}

.panel {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 8px 12px;
    position: relative;
}

.panel-left {
    grid-row: 1 / 5;
    display: flex;
    flex-direction: column;
    gap: 8px;
    overflow: hidden;
    min-height: 0;
}

.panel-right {
    grid-row: 1 / 5;
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 0;
}

.info-panel-label,
.waveform,
.panel-title {
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--labels);
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
}

.camera-layout {
    position: relative;
    aspect-ratio: 16 / 10;
    background: #000;
    border: 1px solid var(--border);
    overflow: hidden;
    flex-shrink: 1;
    min-height: 0;
}

#videoIn {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scaleX(-1);
    opacity: 0;
    transition: opacity 0.5s;
}

#videoIn.active {
    opacity: 1;
}

#motionCanvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    mix-blend-mode: screen;
    transform: scaleX(-1);
}

.camera-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--labels);
    font-size: 12px;
    text-align: center;
}

.zone-markup {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.zone-label {
    position: absolute;
    font-size: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 2px 6px;
    border: 1px solid;
    opacity: 0.6;
}

.zone-head       { top: 5%;  left: 50%; transform: translateX(-50%); color: var(--accentHead); border-color: var(--accentHead); }
.zone-arm-left  { top: 35%; left: 5%;  color: var(--accentArms); border-color: var(--accentArms); }
.zone-arm-right { top: 35%; right: 5%; color: var(--accentArms); border-color: var(--accentArms); }
.zone-torso      { top: 50%; left: 50%; transform: translateX(-50%); color: var(--accentTorso); border-color: var(--accentTorso); }
.zone-legs       { bottom: 8%; left: 50%; transform: translateX(-50%); color: var(--accentLegs); border-color: var(--accentLegs); }

.btn-start {
    width: 100%;
    padding: 8px;
    background: transparent;
    border: 1px solid var(--accentHead);
    color: var(--accentHead);
    font-family: 'Bebas Neue', sans-serif;
    font-size: 18px;
    letter-spacing: 4px;
    cursor: pointer;
    transition: all 0.2s;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
}

.btn-start::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--accentHead);
    opacity: 0;
    transition: opacity 0.2s;
}

.btn-start:hover::before {
    opacity: 0.1;
}

.btn-start:hover {
    box-shadow: 0 0 20px rgba(0, 245, 196, 0.2);
}

.info-zone-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.zone-card {
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-left: 3px solid;
    position: relative;
    overflow: hidden;
    transition: border-color 0.2s;
}

.zone-card::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.3s;
}

.zone-card[data-zone="HEAD"]  { border-left-color: var(--accentHead); }
.zone-card[data-zone="HEAD"]::before  { background: var(--accentHead); }
.zone-card[data-zone="ARMS"]  { border-left-color: var(--accentArms); }
.zone-card[data-zone="ARMS"]::before  { background: var(--accentArms); }
.zone-card[data-zone="TORSO"] { border-left-color: var(--accentTorso); }
.zone-card[data-zone="TORSO"]::before { background: var(--accentTorso); }
.zone-card[data-zone="LEGS"]  { border-left-color: var(--accentLegs); }
.zone-card[data-zone="LEGS"]::before  { background: var(--accentLegs); }

.zone-card-name {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 4px;
    text-transform: uppercase;
}

.zone-card-freq {
    font-size: 14px;
    font-family: 'Bebas Neue', sans-serif;
}

.zone-card-desc {
    font-size: 12px;
    color: var(--labels);
    margin-top: 3px;
    line-height: 1.4;
}

.zone-meter {
    height: 3px;
    background: var(--border);
    margin-top: 8px;
    border-radius: 1px;
    overflow: hidden;
}

.zone-meter-fill {
    height: 100%;
    width: 0%;
    border-radius: 1px;
    transition: width 0.1s;
}

.zone-card[data-zone="HEAD"]  .zone-meter-fill { background: var(--accentHead); }
.zone-card[data-zone="ARMS"]  .zone-meter-fill { background: var(--accentArms); }
.zone-card[data-zone="TORSO"] .zone-meter-fill { background: var(--accentTorso); }
.zone-card[data-zone="LEGS"]  .zone-meter-fill { background: var(--accentLegs); }

.control-sliders {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.slider-group label {
    display: block;
    font-size: 9px;
    letter-spacing: 2px;
    color: var(--labels);
    margin-bottom: 6px;
    text-transform: uppercase;
}

.slider-group input[type="range"] {
    width: 100%;
    -webkit-appearance: none;
    appearance: none;
    height: 2px;
    background: var(--border);
    outline: none;
    cursor: pointer;
}

.slider-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accentHead);
    cursor: pointer;
    box-shadow: 0 0 8px var(--accentHead);
}

.slider-value {
    font-size: 14px;
    font-family: 'Bebas Neue', sans-serif;
    color: var(--accentHead);
    margin-top: 4px;
}

.visualization-block {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.spectrogram-wrapper {
    position: relative;
}

#spectrogramCanvas,
#waveformCanvas {
    width: 100%;
    display: block;
    background: #000;
}

.axis {
    position: absolute;
    right: 8px;
    top: 8px;
    bottom: 8px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    font-size: 10px;
    color: var(--labels);
    text-align: right;
    pointer-events: none;
}

.spectro-color {
    position: absolute;
    top: 8px;
    left: 8px;
    font-size: 12px;
    color: var(--labels);
    line-height: 1.8;
    pointer-events: none;
}

.status-bar {
    grid-column: 1 / -1;
    align-items: center;
    display: flex;
    padding: 6px 20px;
    gap: 24px;
    font-size: 10px;
    border-top: 1px solid var(--border);
    letter-spacing: 1px;
    color: var(--dim);
    background: var(--panel);
}

.status-bar-label {
    color: var(--labels);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.status-bar-value {
    color: var(--text);
    font-family: 'Bebas Neue', sans-serif;
    font-size: 16px;
}

.zone-tags {
    display: flex;
    gap: 8px;
    margin-left: auto;
}

.zone-tag {
    padding: 3px 10px;
    border: 1px solid var(--border);
    font-size: 9px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--labels);
    transition: all 0.3s;
}

.zone-tag.active {
    border-color: var(--accentHead);
    color: var(--accentHead);
    box-shadow: 0 0 8px rgba(0, 245, 196, 0.2);
}

.note {
    grid-column: 1 / -1;
    padding: 6px 20px;
    background: rgba(123, 97, 255, 0.05);
    border-top: 1px solid rgba(123, 97, 255, 0.2);
    font-size: 10px;
    color: var(--labels);
    letter-spacing: 0.5px;
    line-height: 1.6;
}

.note strong {
    color: var(--accentTorso);
}

::-webkit-scrollbar { width: 4px;}
::-webkit-scrollbar-track { background: var(--bg);}
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }