/* DESIGN SYSTEM - DARK MODE & NEON ACCENTS - KHANG AUDIO */

:root {
  --bg-deep-navy: #0b0f19;
  --bg-slate-dark: #0f172a;
  --bg-header-dark: #161e31;
  --bg-sidebar: #111827;
  --bg-panel: #1e293b;

  --color-power: #CCFF00;
  --color-source: #FF4B91;
  --color-processing: #A855F7;
  --color-amp: #00E5FF;
  --color-speaker: #F97316;
  --color-karaoke: #D946EF;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --border-dark: #1e293b;
  --border-highlight: #334155;

  --font-main: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-deep-navy);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* APP CONTAINER LAYOUT */
.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
}

/* HEADER TOOLBAR */
.app-header {
  height: 60px;
  background-color: var(--bg-sidebar);
  border-bottom: 1px solid var(--border-dark);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 100;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  font-size: 24px;
}

.brand-title {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.5px;
  background: linear-gradient(90deg, #CCFF00, #00E5FF, #D946EF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-sub {
  font-size: 11px;
  color: var(--text-muted);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 16px;
}

.tool-group {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-slate-dark);
  padding: 4px 10px;
  border-radius: 8px;
  border: 1px solid var(--border-dark);
}

.tool-label {
  font-size: 12px;
  color: var(--text-secondary);
}

/* BUTTONS */
.btn {
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-primary {
  background: linear-gradient(135deg, #00E5FF, #00B0FF);
  color: #0b0f19;
}
.btn-primary:hover {
  filter: brightness(1.15);
  box-shadow: 0 0 10px rgba(0,229,255,0.4);
}

.btn-secondary {
  background: var(--bg-panel);
  color: var(--text-primary);
  border: 1px solid var(--border-highlight);
}
.btn-secondary:hover {
  background: var(--border-highlight);
}

.btn-danger {
  background: #EF4444;
  color: #fff;
}
.btn-danger:hover {
  background: #DC2626;
}

.btn-sm {
  padding: 4px 8px;
  font-size: 11px;
}

/* FONT SCALER SLIDER */
.font-scaler-container {
  display: flex;
  align-items: center;
  gap: 8px;
}

.font-slider {
  width: 90px;
  accent-color: #00E5FF;
}

.scale-val {
  font-size: 12px;
  color: #00E5FF;
  font-weight: bold;
  min-width: 38px;
}

/* MAIN CONTENT WORKSPACE */
.app-main {
  flex: 1;
  display: flex;
  position: relative;
  overflow: hidden;
}

/* SIDEBAR LIBRARY */
.app-sidebar {
  width: 320px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-dark);
  display: flex;
  flex-direction: column;
  z-index: 20;
}

.sidebar-search-box {
  padding: 12px;
  border-bottom: 1px solid var(--border-dark);
}

.search-input {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg-deep-navy);
  border: 1px solid var(--border-highlight);
  border-radius: 6px;
  color: #fff;
  font-size: 13px;
  outline: none;
}
.search-input:focus {
  border-color: #00E5FF;
}

.sidebar-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-dark);
  background: var(--bg-slate-dark);
}

.tab-btn {
  flex: 1;
  padding: 10px;
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  border: none;
  background: transparent;
  transition: all 0.2s;
}
.tab-btn.active {
  color: #00E5FF;
  border-bottom: 2px solid #00E5FF;
  background: var(--bg-sidebar);
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
}

.sidebar-category-group {
  margin-bottom: 16px;
}

.category-header {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
  padding-bottom: 4px;
  border-bottom: 1px stroke rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  gap: 6px;
}

.device-item-card {
  background: var(--bg-slate-dark);
  border: 1px solid var(--border-dark);
  border-radius: 6px;
  padding: 8px 10px;
  margin-bottom: 8px;
  cursor: grab;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.device-item-card:hover {
  border-color: #00E5FF;
  transform: translateX(3px);
  background: var(--bg-panel);
}

.device-item-info {
  display: flex;
  align-items: center;
  gap: 8px;
}

.device-item-icon {
  font-size: 18px;
}

.device-item-title {
  font-size: 12px;
  font-weight: 600;
}

/* CANVAS WORKSPACE */
.canvas-container {
  flex: 1;
  background-color: var(--bg-deep-navy);
  position: relative;
  overflow: hidden;
  cursor: default;
}

.canvas-viewport {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: 0 0;
}

/* WATERMARK */
.canvas-watermark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-30deg);
  pointer-events: none;
  user-select: none;
  text-align: center;
  z-index: 1;
}

.wm-line1 {
  font-size: 72px;
  font-weight: 900;
  color: #ffffff;
  opacity: 0.12;
  letter-spacing: 2px;
}

.wm-line2 {
  font-size: 32px;
  font-weight: 700;
  color: #00E5FF;
  opacity: 0.12;
  letter-spacing: 1px;
}

/* SVG CONNECTIONS LAYER */
.canvas-svg-layer {
  position: absolute;
  width: 10000px;
  height: 10000px;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 2;
}

.cable-hit-area {
  stroke: transparent;
  stroke-width: 16px;
  fill: none;
  cursor: pointer;
  pointer-events: stroke;
}

.cable-path {
  fill: none;
  stroke-width: 3.5px;
  stroke-linecap: round;
  pointer-events: none;
  transition: stroke 0.3s ease;
}

.cable-group.flowing-active .cable-path {
  stroke-dasharray: 8 6;
  animation: cableFlow 1s linear infinite;
}

@keyframes cableFlow {
  from { stroke-dashoffset: 28; }
  to { stroke-dashoffset: 0; }
}

.cable-group.selected-cable .cable-path {
  stroke: #EF4444 !important;
  stroke-width: 5px;
  filter: drop-shadow(0 0 6px #EF4444);
}

.cable-label-bg {
  fill: var(--bg-slate-dark);
  stroke-width: 1px;
}

.cable-label-text {
  font-size: 10px;
  font-weight: bold;
  fill: #00E5FF;
  pointer-events: none;
}

.remove-cable-btn {
  cursor: pointer;
  pointer-events: all;
  transition: transform 0.2s;
}
.remove-cable-btn:hover {
  transform: scale(1.2);
}

.temp-wire {
  fill: none;
  stroke-width: 3px;
  stroke-dasharray: 4 4;
  pointer-events: none;
}

/* HTML CARDS LAYER */
.canvas-cards-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 10000px;
  height: 10000px;
  pointer-events: none;
  z-index: 3;
}

.device-card {
  position: absolute;
  width: 260px;
  background: var(--bg-slate-dark);
  border: 2px solid #00E5FF;
  border-radius: 8px;
  pointer-events: all;
  box-shadow: 0 4px 16px rgba(0,0,0,0.5);
  transition: opacity 0.3s ease, filter 0.3s ease;
  user-select: none;
}

.device-card.selected {
  outline: 2px dashed #00E5FF;
  outline-offset: 4px;
}

.device-card.dimmed-unpowered {
  opacity: 0.35;
  filter: grayscale(0.8);
}

.card-header {
  height: 36px;
  background: var(--bg-header-dark);
  padding: 0 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-dark);
  border-top-left-radius: 6px;
  border-top-right-radius: 6px;
  cursor: move;
}

.cat-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 6px;
}

.card-title {
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.card-actions {
  display: flex;
  gap: 4px;
}

.btn-card-action {
  background: transparent;
  border: none;
  font-size: 12px;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s;
}
.btn-card-action:hover {
  opacity: 1;
}

.card-body {
  padding: 10px;
}

.card-art-container {
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
  background: rgba(0,0,0,0.2);
  border-radius: 4px;
}

.device-svg-art {
  max-height: 44px;
  max-width: 100%;
}

.card-status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.badge {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.badge-power-on {
  background: rgba(204, 255, 0, 0.15);
  color: #CCFF00;
  border: 1px solid #CCFF00;
}
.badge-power-off {
  background: rgba(239, 68, 68, 0.15);
  color: #EF4444;
  border: 1px solid #EF4444;
}
.badge-power-source {
  background: rgba(0, 229, 255, 0.15);
  color: #00E5FF;
  border: 1px solid #00E5FF;
}

.badge-speaker-active {
  background: rgba(249, 115, 22, 0.15);
  color: #F97316;
  border: 1px solid #F97316;
  padding: 2px 6px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  font-weight: bold;
}

.badge-speaker-silent {
  background: rgba(148, 163, 184, 0.15);
  color: #94a3b8;
  border: 1px solid #94a3b8;
}

/* EQUALIZER BARS ANIMATION */
.eq-bars {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 10px;
}

.eq-bar {
  width: 2px;
  background: #F97316;
  border-radius: 1px;
  animation: eqAnim 0.8s ease-in-out infinite alternate;
}
.eq-bar:nth-child(1) { height: 4px; animation-delay: 0.1s; }
.eq-bar:nth-child(2) { height: 9px; animation-delay: 0.3s; }
.eq-bar:nth-child(3) { height: 6px; animation-delay: 0.2s; }
.eq-bar:nth-child(4) { height: 8px; animation-delay: 0.4s; }

@keyframes eqAnim {
  0% { height: 2px; }
  100% { height: 10px; }
}

.card-role-note {
  font-size: 10px;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.03);
  padding: 6px;
  border-radius: 4px;
  margin-bottom: 8px;
  line-height: 1.3;
}

/* PORTS */
.ports-container {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.ports-column {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.ports-column.inputs-col { align-items: flex-start; }
.ports-column.outputs-col { align-items: flex-end; }

.port-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
}

.port-label {
  color: var(--text-secondary);
}

.port-node {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--bg-deep-navy);
  border: 2px solid #00E5FF;
  cursor: crosshair;
  transition: transform 0.2s, background 0.2s;
}
.port-node:hover {
  transform: scale(1.3);
  background: #00E5FF;
}

/* SYSTEM DIAGNOSTICS PANEL */
.diagnostics-panel {
  width: 320px;
  background: var(--bg-sidebar);
  border-left: 1px solid var(--border-dark);
  display: flex;
  flex-direction: column;
  z-index: 20;
}

.diag-header {
  padding: 12px;
  border-bottom: 1px solid var(--border-dark);
  font-weight: bold;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-slate-dark);
}

.diag-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
}

.diag-item {
  background: var(--bg-slate-dark);
  border: 1px solid var(--border-dark);
  border-left: 4px solid #EF4444;
  padding: 8px 10px;
  border-radius: 4px;
  margin-bottom: 8px;
  font-size: 11px;
  cursor: pointer;
  transition: transform 0.2s, border-color 0.2s;
}
.diag-item:hover {
  transform: translateX(-3px);
  border-color: #00E5FF;
}

.diag-item.perfect {
  border-left-color: #CCFF00;
  color: #CCFF00;
  font-weight: bold;
}

/* MODALS */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal-card {
  background: var(--bg-sidebar);
  border: 1px solid var(--border-highlight);
  border-radius: 10px;
  width: 450px;
  max-width: 90vw;
  box-shadow: 0 10px 30px rgba(0,0,0,0.8);
}

.modal-card.modal-large {
  width: 650px;
}

.modal-header {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-dark);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.btn-close-modal {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 20px;
  cursor: pointer;
}

.modal-body {
  padding: 20px;
  max-height: 70vh;
  overflow-y: auto;
}

.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--border-dark);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.form-group {
  margin-bottom: 14px;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-label {
  display: block;
  font-size: 12px;
  margin-bottom: 6px;
  color: var(--text-secondary);
}

.form-input, .form-select {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg-deep-navy);
  border: 1px solid var(--border-highlight);
  border-radius: 6px;
  color: #fff;
  font-size: 13px;
  outline: none;
}
.form-input:focus, .form-select:focus {
  border-color: #00E5FF;
}

.ports-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.port-input-row {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
  align-items: center;
}

.btn-del-row {
  background: transparent;
  border: none;
  color: #EF4444;
  font-size: 18px;
  cursor: pointer;
}

/* HIDE POWER DEVICES & POWER CABLES FIX */
.device-card.hidden-power-device {
  display: none !important;
}

.cable-group.hidden-power-cable {
  display: none !important;
}

/* CONNECTION GUIDE MODAL STYLES */
.safety-warning-box {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid #EF4444;
  color: #FCA5A5;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 12px;
  line-height: 1.5;
  margin-bottom: 16px;
}

.guide-step-card {
  background: var(--bg-slate-dark);
  border: 1px solid var(--border-dark);
  border-left: 4px solid #00E5FF;
  padding: 12px 14px;
  border-radius: 6px;
  margin-bottom: 10px;
}

.guide-step-num {
  font-weight: 800;
  color: #00E5FF;
  font-size: 13px;
  margin-bottom: 4px;
}

.guide-step-detail {
  font-size: 12px;
  color: #f8fafc;
  line-height: 1.5;
}

.cable-badge {
  display: inline-block;
  background: rgba(0, 229, 255, 0.15);
  color: #00E5FF;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: bold;
  font-size: 11px;
}

/* HIDE POWER DEVICES & POWER CABLES FIX */
.device-card.hidden-power-device {
  display: none !important;
}

.cable-group.hidden-power-cable {
  display: none !important;
}

/* CONNECTION GUIDE MODAL STYLES */
.safety-warning-box {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid #EF4444;
  color: #FCA5A5;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 12px;
  line-height: 1.5;
  margin-bottom: 16px;
}

.guide-step-card {
  background: var(--bg-slate-dark);
  border: 1px solid var(--border-dark);
  border-left: 4px solid #00E5FF;
  padding: 12px 14px;
  border-radius: 6px;
  margin-bottom: 10px;
}

.guide-step-num {
  font-weight: 800;
  color: #00E5FF;
  font-size: 13px;
  margin-bottom: 4px;
}

.guide-step-detail {
  font-size: 12px;
  color: #f8fafc;
  line-height: 1.5;
}

.cable-badge {
  display: inline-block;
  background: rgba(0, 229, 255, 0.15);
  color: #00E5FF;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: bold;
  font-size: 11px;
}

/* FONT SCALER FIX USING CSS VARIABLES */
:root {
  --card-scale: 1;
}

.device-card {
  font-size: calc(12px * var(--card-scale, 1));
}

.card-title {
  font-size: calc(12px * var(--card-scale, 1)) !important;
}

.card-role-note {
  font-size: calc(10px * var(--card-scale, 1)) !important;
}

.port-label {
  font-size: calc(10px * var(--card-scale, 1)) !important;
}

.badge {
  font-size: calc(10px * var(--card-scale, 1)) !important;
}

/* REPEATING WATERMARKS GRID BACKGROUND STYLES */
.canvas-watermarks-grid {
  position: absolute;
  top: 0; left: 0;
  width: 3500px;
  height: 2500px;
  pointer-events: none;
  user-select: none;
  z-index: 1;
}

.canvas-watermark-item {
  position: absolute;
  transform: rotate(-30deg);
  text-align: center;
}

.canvas-watermark-item .wm-line1 {
  font-size: 64px;
  font-weight: 900;
  color: #ffffff;
  opacity: 0.08;
  letter-spacing: 2px;
}

.canvas-watermark-item .wm-line2 {
  font-size: 28px;
  font-weight: 700;
  color: #00E5FF;
  opacity: 0.10;
  letter-spacing: 1px;
}