code/ezflow_v3/app/frontend/style.css

/* EZFlow Standalone App Styling - Dark Mode Glassmorphism Theme */

:root {
  --bg-color: #0b0d10;
  --panel-bg: rgba(22, 26, 33, 0.85);
  --panel-border: rgba(255, 255, 255, 0.06);
  --text-main: #f0f3f8;
  --text-muted: #8b99ae;
  --accent-cyan: #00f0ff;
  --accent-blue: #1b49aa;
  --danger-red: #ff3e3e;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
  --radius: 12px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* HEADER styling */
.app-header {
  height: 60px;
  background-color: rgba(13, 16, 21, 0.95);
  border-bottom: 1px solid var(--panel-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 24px;
  z-index: 100;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.5px;
}

.neon-text {
  color: var(--accent-cyan);
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.35);
}

.system-status {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.status-indicator.online {
  background-color: #00e676;
  box-shadow: 0 0 8px #00e676;
}

.status-indicator.running {
  background-color: #ffb300;
  box-shadow: 0 0 8px #ffb300;
}

.status-indicator.error {
  background-color: var(--danger-red);
  box-shadow: 0 0 8px var(--danger-red);
}

/* APP LAYOUT */
.app-layout {
  flex: 1;
  display: flex;
  padding: 16px;
  gap: 16px;
  height: calc(100vh - 60px);
}

.panel {
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* PANEL DIVISION */
.control-panel {
  width: 380px;
  padding: 20px;
  overflow-y: auto;
}

.viewport-panel {
  flex: 1;
  position: relative;
}

.metadata-panel {
  width: 320px;
  padding: 20px;
  gap: 20px;
  overflow-y: auto;
}

/* CARDS inside panels */
.section-card {
  margin-bottom: 24px;
}

.section-card:last-child {
  margin-bottom: 0;
}

h2 {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 16px;
  font-weight: 600;
}

h3 {
  font-size: 0.95rem;
  color: var(--accent-cyan);
  margin-bottom: 8px;
}

p {
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--text-muted);
}

/* TABS */
.tabs {
  display: flex;
  background-color: rgba(0, 0, 0, 0.25);
  border-radius: 8px;
  padding: 4px;
  margin-bottom: 16px;
}

.tab-btn {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-muted);
  padding: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.tab-btn.active {
  background-color: var(--accent-blue);
  color: var(--text-main);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* FORMS & INPUTS */
.input-group {
  margin-bottom: 16px;
}

label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-main);
  margin-bottom: 8px;
  font-weight: 500;
}

select {
  width: 100%;
  background-color: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--panel-border);
  color: var(--text-main);
  padding: 10px;
  border-radius: 6px;
  font-size: 0.9rem;
  outline: none;
  cursor: pointer;
}

select:focus {
  border-color: var(--accent-cyan);
}

/* SLIDERS */
.slider-group {
  margin-bottom: 16px;
}

.slider-group label {
  display: flex;
  justify-content: space-between;
}

.slider-group label span {
  color: var(--accent-cyan);
  font-weight: 600;
  font-family: monospace;
}

input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  background: rgba(255, 255, 255, 0.1);
  height: 6px;
  border-radius: 3px;
  outline: none;
  margin: 10px 0;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  background: var(--accent-cyan);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 10px var(--accent-cyan);
  transition: transform 0.1s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

input[type="range"]::-moz-range-thumb {
  background: var(--accent-cyan);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 10px var(--accent-cyan);
  transition: transform 0.1s ease;
  border: none;
}

input[type="range"]::-moz-range-thumb:hover {
  transform: scale(1.15);
}

/* DRAG & DROP AREA */
.upload-area {
  border: 2px dashed rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  padding: 24px;
  text-align: center;
  cursor: pointer;
  background-color: rgba(0, 0, 0, 0.15);
  transition: border-color 0.2s ease;
}

.upload-area:hover {
  border-color: var(--accent-cyan);
}

.upload-icon {
  width: 48px;
  height: 48px;
  fill: var(--text-muted);
  margin-bottom: 12px;
}

.upload-area p {
  font-size: 0.8rem;
}

.upload-area span {
  color: var(--accent-cyan);
  text-decoration: underline;
}

.file-info {
  margin-top: 12px;
  font-size: 0.8rem;
  color: var(--accent-cyan);
  font-weight: 500;
}

/* BUTTONS */
.btn {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.btn-predict {
  background: linear-gradient(135deg, var(--accent-blue) 0%, #0d2c6c 100%);
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.btn-predict:hover {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-blue) 100%);
  color: #0b0d10;
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
}

.btn-predict:active {
  transform: scale(0.98);
}

.btn.loading .btn-text {
  visibility: hidden;
  opacity: 0;
}

.btn.loading .spinner {
  display: block;
}

.spinner {
  display: none;
  width: 24px;
  height: 24px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: var(--text-main);
  animation: spin 1s ease-in-out infinite;
  position: absolute;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.reynolds-info {
  background-color: rgba(27, 73, 170, 0.25);
  border: 1px solid rgba(27, 73, 170, 0.5);
  border-radius: 6px;
  padding: 10px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-main);
}

.reynolds-info strong {
  color: var(--accent-cyan);
  font-family: monospace;
  font-size: 1rem;
}

/* VIEWPORT & FLOATING TOOLBAR */
#canvas-container {
  width: 100%;
  height: 100%;
  background-color: #07090b;
}

.viewport-toolbar {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 24px;
  padding: 12px 24px;
  border-radius: 30px;
  align-items: center;
  z-index: 10;
}

.glass {
  background: rgba(13, 16, 21, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow);
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.toolbar-group label {
  margin-bottom: 0;
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.toolbar-group select {
  padding: 6px 12px;
  font-size: 0.8rem;
  background-color: rgba(0, 0, 0, 0.4);
}

.slider-wide {
  width: clamp(340px, 44vw, 680px);
}

/* bigger slice slider in the floating toolbar -> easier, finer dragging */
.viewport-toolbar input[type="range"] {
  height: 10px;
}
.viewport-toolbar input[type="range"]::-webkit-slider-thumb {
  width: 30px;
  height: 30px;
}
.viewport-toolbar input[type="range"]::-moz-range-thumb {
  width: 30px;
  height: 30px;
}

/* LEGEND SCALE PANEL (RIGHT) */
.legend-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 0;
}

.legend-color-bar {
  width: 25px;
  height: 200px;
  background: linear-gradient(to top,
    #1a9850 0%,
    #a6d96a 30%,
    #f7e463 50%,
    #fdae61 70%,
    #d73027 100%
  );
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  margin: 10px 0;
}

.legend-labels {
  display: flex;
  width: 100%;
  justify-content: space-between;
  font-size: 0.85rem;
}

.legend-labels span:first-child {
  font-family: monospace;
  font-weight: 600;
  color: var(--accent-cyan);
}

.legend-unit {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* METADATA STATS LIST */
.stats-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.stat-item {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
}

.stat-item span:first-child {
  color: var(--text-muted);
}

.stat-item span:last-child {
  font-weight: 500;
}

.highlight-cyan {
  color: var(--accent-cyan);
  font-weight: 600 !important;
  text-shadow: 0 0 8px rgba(0, 240, 255, 0.2);
}

.code-font {
  font-family: monospace;
}

.info-box {
  background-color: rgba(0, 240, 255, 0.04);
  border: 1px solid rgba(0, 240, 255, 0.15);
  border-radius: 8px;
  padding: 16px;
}

/* FLOATING OPTIONS CARD (TOP RIGHT) */
.viewport-options {
  position: absolute;
  top: 20px;
  right: 20px;
  padding: 16px;
  border-radius: var(--radius);
  width: 240px;
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.options-section h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 10px;
  font-weight: 600;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 4px;
}

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

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

.option-row label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

.option-row select {
  width: 120px;
  padding: 4px 8px;
  font-size: 0.8rem;
  background-color: rgba(0, 0, 0, 0.4);
}

.checkbox-row {
  justify-content: flex-start;
  gap: 10px;
}

.checkbox-row input[type="checkbox"] {
  accent-color: var(--accent-cyan);
  cursor: pointer;
  width: 14px;
  height: 14px;
}

.checkbox-row label {
  cursor: pointer;
  user-select: none;
  font-size: 0.8rem;
}

.preset-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.btn-preset {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--panel-border);
  color: var(--text-main);
  padding: 6px 4px;
  font-size: 0.75rem;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s ease;
}

.btn-preset:hover {
  background-color: var(--accent-blue);
  border-color: var(--accent-cyan);
}

/* (6) light adaptiveness to monitor size: scale rem fonts + panel widths */
@media (max-width: 1500px) {
  html { font-size: 15px; }
  .control-panel { width: 340px; }
  .metadata-panel { width: 300px; }
}
@media (max-width: 1200px) {
  html { font-size: 14px; }
  .control-panel { width: 300px; padding: 14px; }
  .metadata-panel { width: 270px; padding: 14px; }
  .app-layout { gap: 10px; padding: 10px; }
}

/* viewport loading overlay */
.viewport-overlay {
  position: absolute; inset: 0; z-index: 20;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 18px; text-align: center; padding: 24px;
  background: rgba(7, 9, 11, 0.55); backdrop-filter: blur(2px);
  color: var(--text-main); font-size: 0.95rem;
}
.vo-spinner {
  width: 46px; height: 46px; border-radius: 50%;
  border: 4px solid rgba(0, 240, 255, 0.2); border-top-color: var(--accent-cyan);
  animation: spin 0.9s linear infinite;
}
#viewport-overlay-text { max-width: 460px; line-height: 1.5; color: var(--text-muted); }

/* toast (transient status / error message over the viewport) */
.toast {
  position: absolute; bottom: 92px; left: 50%; transform: translateX(-50%);
  z-index: 30; max-width: 72%; padding: 12px 18px; border-radius: 8px;
  background: rgba(13, 16, 21, 0.96); border: 1px solid var(--panel-border);
  color: var(--text-main); font-size: 0.85rem; box-shadow: var(--shadow);
}
.toast-error { border-color: var(--danger-red); color: #ffd9d9; }

/* drag-over highlight on the upload area */
.upload-area.hover { border-color: var(--accent-cyan); background: rgba(0, 240, 255, 0.06); }

/* extra movable slices list (right panel) */
.slice-row { border-top: 1px solid var(--panel-border); padding-top: 10px; margin-top: 10px; }
.slice-row:first-child { border-top: none; padding-top: 0; margin-top: 0; }
.slice-row-head { display: flex; justify-content: space-between; align-items: center;
  font-size: 0.82rem; color: var(--text-main); font-weight: 500; }
.slice-x { background: none; border: none; color: var(--danger-red); font-size: 1.2rem;
  line-height: 1; cursor: pointer; padding: 0 4px; }
.slice-x:hover { color: #ff7a7a; }