@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
  --bg-primary: #0b0f19;
  --bg-secondary: rgba(20, 26, 45, 0.65);
  --bg-tertiary: rgba(30, 41, 59, 0.8);
  --bg-card: rgba(15, 23, 42, 0.75);
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(59, 130, 246, 0.5);
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --accent-color: #3b82f6;
  --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  
  --danger-color: #ef4444;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  
  --glass-blur: blur(12px);
  --box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --card-shadow: 0 4px 20px 0 rgba(0, 0, 0, 0.25);
  
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --grid-size: 20px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
  display: flex;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* Main Container Layout */
.app-container {
  display: flex;
  width: 100%;
  height: 100%;
  position: relative;
}

/* Sidebar Styling */
.sidebar {
  width: 320px;
  height: 100%;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  display: flex;
  flex-direction: column;
  z-index: 10;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border-color);
  background: rgba(11, 15, 25, 0.4);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sidebar-logo span {
  font-size: 1.4rem;
  -webkit-text-fill-color: initial;
}

.sidebar-scrollable {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-section-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-dim);
  margin-bottom: 12px;
  font-weight: 700;
}

/* Device Category Accordions */
.category-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.category-title {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  padding: 8px 10px;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.category-title:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
}

.category-items {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 8px;
  margin-top: 4px;
}

.template-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 8px;
  cursor: grab;
  font-size: 0.85rem;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.template-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-1px);
}

.template-item:active {
  cursor: grabbing;
}

.template-item .icon {
  font-size: 1.1rem;
}

.template-item .details {
  display: flex;
  flex-direction: column;
}

.template-item .desc {
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-top: 1px;
}

/* Button & Action styling */
.action-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
}

.btn-primary {
  background: var(--accent-gradient);
  border: none;
  font-weight: 600;
}

.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.3);
  color: #f87171;
}

.btn-full {
  grid-column: span 2;
}

/* Main Workspace / Canvas Container */
.workspace {
  flex: 1;
  height: 100%;
  position: relative;
  overflow: hidden;
  background-color: var(--bg-primary);
}

/* Interactive Floating Controls */
.top-bar {
  position: absolute;
  top: 20px;
  left: 20px;
  right: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
  z-index: 5;
}

.top-bar-left, .top-bar-right {
  display: flex;
  gap: 12px;
  pointer-events: auto;
}

.control-panel-floating {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  padding: 6px;
  border-radius: 10px;
  display: flex;
  gap: 4px;
  box-shadow: var(--box-shadow);
}

.icon-btn {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 1.1rem;
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
}

.icon-btn.active {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-color);
}

/* Canvas Area */
.canvas-container {
  width: 100%;
  height: 100%;
  cursor: grab;
  position: relative;
}

.canvas-container:active {
  cursor: grabbing;
}

.canvas-grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 5000px;
  height: 5000px;
  background-size: var(--grid-size) var(--grid-size);
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  transform-origin: 0 0;
}

/* Connection Canvas (SVG) */
.connections-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.cable-line {
  fill: none;
  stroke-width: 3.5;
  stroke-linecap: round;
  pointer-events: stroke;
  cursor: pointer;
  transition: stroke-width 0.15s ease;
}

.cable-line:hover {
  stroke-width: 6;
  filter: drop-shadow(0 0 8px currentColor);
}

.cable-line-active {
  stroke-width: 5;
  filter: drop-shadow(0 0 10px currentColor);
}

.cable-bg-line {
  fill: none;
  stroke: rgba(0, 0, 0, 0.4);
  stroke-width: 6.5;
  stroke-linecap: round;
  pointer-events: none;
}

.cable-interaction {
  fill: none;
  stroke: transparent;
  stroke-width: 15;
  stroke-linecap: round;
  cursor: pointer;
  pointer-events: stroke;
}

/* Device Node Cards */
.device-node {
  position: absolute;
  width: 200px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: var(--card-shadow);
  z-index: 2;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.device-node:hover {
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
}

.device-node.dragging {
  cursor: grabbing;
  border-color: var(--accent-color);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5), 0 0 10px rgba(59, 130, 246, 0.2);
  z-index: 99;
}

.device-header {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: move;
}

.device-title {
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: flex-start;
  gap: 6px;
  white-space: normal;
  word-break: break-word;
}

.device-title span.icon {
  font-size: 1rem;
}

.device-delete-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.95rem;
  padding: 2px;
  border-radius: 4px;
  line-height: 1;
  transition: all 0.15s ease;
}

.device-delete-btn:hover {
  color: var(--danger-color);
  background: rgba(239, 68, 68, 0.1);
}

/* Node layout for ports */
.device-ports {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  position: relative;
  min-height: 50px;
}

.ports-column {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 50%;
}

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

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

/* Individual Port Styling */
.port-wrapper {
  display: flex;
  align-items: center;
  gap: 6px;
  position: relative;
  width: 100%;
  padding: 2px 8px;
}

.inputs .port-wrapper {
  flex-direction: row;
}

.outputs .port-wrapper {
  flex-direction: row-reverse;
  text-align: right;
}

.port-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--text-dim);
  border: 2px solid var(--bg-card);
  cursor: crosshair;
  transition: transform 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease;
  position: absolute;
  z-index: 5;
}

.inputs .port-dot {
  left: -5px;
}

.outputs .port-dot {
  right: -5px;
}

.port-dot:hover {
  transform: scale(1.4);
  box-shadow: 0 0 6px currentColor;
}

.port-dot.connecting-source {
  animation: pulse 1s infinite alternate;
}

.port-dot.compatible {
  transform: scale(1.2);
  box-shadow: 0 0 8px currentColor;
  border-color: #fff;
}

.port-dot.incompatible {
  opacity: 0.3;
  cursor: not-allowed;
}

.port-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0 2px;
  width: calc(100% - 10px);
}

.port-wrapper:hover .port-label {
  color: var(--text-main);
}

/* Special Power Port Box (Placed at bottom center of cards) */
.device-power-section {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding: 8px 12px;
  display: flex;
  justify-content: center;
  background: rgba(255, 255, 255, 0.01);
  border-bottom-left-radius: 12px;
  border-bottom-right-radius: 12px;
}

.power-port-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.power-port-dot {
  width: 14px;
  height: 8px;
  border-radius: 3px;
  background-color: var(--text-dim);
  border: 1px solid var(--bg-card);
  cursor: crosshair;
  transition: all 0.15s ease;
  margin-bottom: 2px;
}

.power-port-dot:hover {
  transform: scale(1.2);
  box-shadow: 0 0 8px currentColor;
}

.power-port-label {
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

/* Port compatibility styles per type */
.port-dot-hdmi { color: #FFB800; background-color: #FFB800; }
.port-dot-optical { color: #FF4B91; background-color: #FF4B91; }
.port-dot-coaxial { color: #00E5FF; background-color: #00E5FF; }
.port-dot-rca { color: #E2E8F0; background-color: #E2E8F0; }
.port-dot-xlr { color: #10B981; background-color: #10B981; }
.port-dot-aux { color: #94A3B8; background-color: #94A3B8; }
.port-dot-speaker { color: #F97316; background-color: #F97316; }
.port-dot-speakon { color: #EF4444; background-color: #EF4444; }
.port-dot-usb { color: #A855F7; background-color: #A855F7; }
.port-dot-wireless { color: #3B82F6; background-color: #3B82F6; }
.port-dot-power_ac { color: #CCFF00; background-color: #CCFF00; }

/* Custom Cable Connection Overlay UI */
.cable-overlay-card {
  position: absolute;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  padding: 10px 14px;
  border-radius: 8px;
  box-shadow: var(--box-shadow);
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 12px;
  pointer-events: auto;
}

.cable-overlay-info {
  display: flex;
  flex-direction: column;
}

.cable-overlay-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-main);
}

.cable-overlay-desc {
  font-size: 0.65rem;
  color: var(--text-muted);
}

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(3, 7, 18, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-backdrop.show {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: var(--box-shadow);
  width: 100%;
  max-width: 500px;
  transform: scale(0.95);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  overflow: hidden;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.modal-backdrop.show .modal-content {
  transform: scale(1);
}

.modal-header {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 1.05rem;
  font-weight: 600;
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.3rem;
  line-height: 1;
}

.modal-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-height: 60vh;
  overflow-y: auto;
}

.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--border-color);
  background: rgba(0, 0, 0, 0.15);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* Form Styling */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.form-control {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  transition: all 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
  background: rgba(255, 255, 255, 0.05);
}

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

.dynamic-port-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

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

/* Animations */
@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0px rgba(59, 130, 246, 0.7);
  }
  100% {
    box-shadow: 0 0 0 8px rgba(59, 130, 246, 0);
  }
}

/* Helper hidden class */
.hidden {
  display: none !important;
}

/* Custom device node types color indicator */
.device-node.cat-power { border-top: 3px solid #CCFF00; }
.device-node.cat-source { border-top: 3px solid #FF4B91; }
.device-node.cat-processing { border-top: 3px solid #A855F7; }
.device-node.cat-amplifier { border-top: 3px solid #00E5FF; }
.device-node.cat-speaker { border-top: 3px solid #F97316; }
.device-node.cat-karaoke { border-top: 3px solid #D946EF; }

/* Preset menu dropdown styled float */
.preset-dropdown {
  position: absolute;
  top: 50px;
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  box-shadow: var(--box-shadow);
  display: flex;
  flex-direction: column;
  min-width: 220px;
  overflow: hidden;
  z-index: 110;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.preset-option {
  padding: 12px 16px;
  font-size: 0.8rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
  border-bottom: 1px solid rgba(255, 255, 255, 0.02);
}

.preset-option:last-child {
  border-bottom: none;
}

.preset-option:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
}

.preset-option .title {
  font-weight: 600;
  margin-bottom: 2px;
}

.preset-option .desc {
  font-size: 0.65rem;
  color: var(--text-dim);
}

/* --- CÁC HIỆU ỨNG DIM & HIGHLIGHT CHO CÁP VÀ THIẾT BỊ --- */
.device-node.dimmed,
g[data-cable-id].dimmed {
  opacity: 0.15 !important;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.device-node.search-highlight {
  border-color: #00E5FF !important;
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.4), 0 5px 15px rgba(0, 0, 0, 0.3) !important;
  transform: scale(1.03);
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 10 !important;
}

g[data-cable-id].search-highlight .cable-line {
  stroke-width: 5.5px !important;
  filter: drop-shadow(0 0 8px currentColor) !important;
}

/* Nhãn chữ chạy dọc theo dây cáp SVG */
.cable-text {
  font-family: var(--font-sans);
  font-size: 7.5px;
  font-weight: 600;
  fill: rgba(255, 255, 255, 0.85);
  pointer-events: none;
  letter-spacing: 0.5px;
}

/* --- CHỈNH KÍCH CỠ CHỮ TRÊN CANVAS --- */
.canvas-grid {
  --font-scale: 1.0;
}
.device-node .device-title {
  font-size: calc(0.85rem * var(--font-scale, 1)) !important;
}
.port-wrapper .port-label {
  font-size: calc(0.7rem * var(--font-scale, 1)) !important;
}
.power-port-wrapper span {
  font-size: calc(0.65rem * var(--font-scale, 1)) !important;
}
.cable-text {
  font-size: calc(7.5px * var(--font-scale, 1)) !important;
}

/* --- WATERMARK KHANG AUDIO TRÊN MÀN HÌNH --- */
.canvas-watermark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-30deg);
  text-align: center;
  pointer-events: none;
  user-select: none;
  z-index: 0;
  font-family: var(--font-sans);
}
.canvas-watermark .wm-title {
  font-size: 7.5rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.038);
  letter-spacing: 6px;
  text-transform: uppercase;
  line-height: 1;
}
.canvas-watermark .wm-sub {
  font-size: 1.8rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.018);
  letter-spacing: 4px;
  text-transform: lowercase;
  margin-top: 10px;
}

/* --- NÚT SỬA THIẾT BỊ TRÊN CANVAS --- */
.device-edit-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.8rem;
  padding: 2px;
  border-radius: 4px;
  line-height: 1;
  transition: all 0.15s ease;
  margin-right: 2px;
}
.device-edit-btn:hover {
  color: var(--accent-color);
  background: rgba(59, 130, 246, 0.15);
}

/* Custom Presets dropdown option delete button styling */
.preset-option-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.preset-option-wrapper .preset-option {
  flex: 1;
}
.preset-delete-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 6px 12px;
  transition: all 0.15s ease;
}
.preset-delete-btn:hover {
  color: var(--danger-color);
  background: rgba(239, 68, 68, 0.1);
}