:root {
  --bg-main: #0e1621;
  --bg-sidebar: #17212b;
  --bg-canvas: #b5ceb4; /* telegram classic chat bg */
  --text-main: #f5f5f5;
  --text-muted: #7f91a4;
  --primary: #5288c1;
  --primary-hover: #4c7eb3;
  --border-color: #242f3d;
  --tele-bubble-bg: #ffffff;
  --tele-text: #000000;
  --tele-btn-bg: rgba(94, 153, 93, 0.7); /* Greenish Inline Button */
  --tele-btn-text: #ffffff;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family:
    "Roboto",
    -apple-system,
    sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Header */
.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
  height: 60px;
  background-color: var(--bg-sidebar);
  border-bottom: 1px solid var(--border-color);
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: bold;
  font-size: 18px;
}
.logo i {
  color: #5288c1;
  font-size: 24px;
}
.actions {
  display: flex;
  gap: 10px;
}

/* Buttons */
.btn {
  padding: 8px 16px;
  border-radius: 6px;
  border: none;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: 0.2s;
}
.btn-primary {
  background-color: var(--primary);
  color: white;
}
.btn-primary:hover {
  background-color: var(--primary-hover);
}
.btn-outline {
  background-color: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}

/* Layout */
.main-container {
  display: flex;
  flex: 1;
  overflow: hidden;
}
.sidebar {
  width: 280px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}
.sidebar-header {
  padding: 20px 20px 5px;
  font-size: 13px;
  font-weight: bold;
  color: var(--text-muted);
}
.sidebar-desc {
  padding: 0 20px 15px;
  font-size: 12px;
  color: var(--text-muted);
}
.toolbox-section {
  padding: 10px 20px;
}

/* Draggables */
.draggable-item {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 12px 15px;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: grab;
  margin-bottom: 10px;
}
.draggable-item:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: var(--primary);
}
.draggable-item i {
  color: #5288c1;
  font-size: 20px;
  width: 24px;
  text-align: center;
}
.item-text span {
  display: block;
  font-size: 14px;
  font-weight: 500;
}
.item-text small {
  font-size: 11px;
  color: var(--text-muted);
}

/* Canvas Area */
.canvas-area {
  flex: 1;
  position: relative;
  background-color: var(--bg-canvas);
  overflow: auto;
}
.canvas-workspace {
  width: 10000px;
  height: 10000px;
  position: relative;
  cursor: grab;
}
.bg-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.2;
  pointer-events: none;
  background-image: url("https://www.transparenttextures.com/patterns/telegram.png"); /* Pattern substitute */
}

/* Telegram Card */
.telegram-card {
  width: 380px;
  background-color: var(--tele-bubble-bg);
  border-radius: 12px 12px 12px 4px; /* Classic Telegram bubble shape */
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 5;
  border: 2px solid transparent;
  transition: 0.2s;
}
.telegram-card.drag-over {
  border: 2px dashed #10b981;
}
.card-header {
  padding: 10px 15px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.bot-name {
  color: #4388b9;
  font-weight: bold;
  font-size: 14px;
}
.bot-badge {
  background: #e4eff9;
  color: #4388b9;
  font-size: 11px;
  font-weight: bold;
  padding: 2px 4px;
  border-radius: 4px;
  margin-left: 5px;
  text-transform: uppercase;
}

.card-content-area {
  min-height: 100px;
  display: flex;
  flex-direction: column;
  padding-bottom: 5px;
}
.placeholder-msg {
  text-align: center;
  color: #9ca3af;
  padding: 30px 20px;
  font-size: 13px;
  border: 1px dashed #e5e7eb;
  margin: 15px;
  border-radius: 8px;
}

/* Telegram Elements */
.tg-element {
  position: relative;
  border: 1px solid transparent;
}
.tg-element:hover {
  border: 1px dotted #cbd5e1;
}
.element-actions {
  position: absolute;
  top: 5px;
  right: 5px;
  display: none;
  background: rgba(0, 0, 0, 0.6);
  border-radius: 4px;
  padding: 2px;
  z-index: 10;
}
.tg-element:hover .element-actions {
  display: flex;
}
.element-actions button {
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  padding: 4px 6px;
}
.element-actions button:hover {
  color: #fb7185;
}

/* Photo Element */
.tg-photo-placeholder {
  width: 100%;
  height: 160px;
  background: #e5e7eb;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #9ca3af;
  cursor: pointer;
}
.tg-photo {
  width: 100%;
  display: none;
  cursor: pointer;
  object-fit: cover;
}

/* Text Element */
.tg-text {
  padding: 10px 15px;
  color: var(--tele-text);
  font-size: 14px;
  line-height: 1.4;
  outline: none;
}
.tg-text code {
  background: #f1f5f9;
  padding: 2px 4px;
  border-radius: 4px;
  font-family: "Courier New", monospace;
  color: #a12027;
  font-size: 13px;
}
.tg-text pre {
  background: #f1f5f9;
  padding: 8px 12px;
  border-radius: 6px;
  font-family: "Courier New", monospace;
  color: #1e293b;
  font-size: 13px;
  margin: 6px 0;
  white-space: pre-wrap;
  overflow-x: auto;
}
.tg-text blockquote {
  border-left: 3px solid #5288c1;
  padding: 2px 10px;
  margin: 2px 0;
  color: #475569;
  background: #f8fafc;
  border-radius: 0 6px 6px 0;
  display: block;
}
.tg-text s {
  text-decoration: line-through;
}
.tg-text:empty::before {
  content: "Input text...";
  color: #cbd5e1;
}

/* Toolbox Groups */
.toolbox-group-label {
  padding: 12px 15px 6px;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.toolbox-group-label i {
  font-size: 12px;
  color: #5288c1;
}
.toolbox-sub-items {
  display: flex;
  gap: 6px;
  padding: 4px 15px 10px;
}
.draggable-item.sub-item {
  flex: 1;
  flex-direction: column;
  gap: 6px;
  padding: 8px 6px;
  justify-content: center;
  text-align: center;
}
.draggable-item.sub-item span {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
}
.sub-preview {
  display: flex;
  gap: 3px;
  justify-content: center;
}
.sp-block {
  width: 20px;
  height: 12px;
  background: rgba(94, 153, 93, 0.7);
  border-radius: 3px;
}
.sp-block.full {
  width: 60px;
}
.sp-block-reply {
  width: 20px;
  height: 12px;
  background: #ffffff;
  border-radius: 3px;
  border: 1px solid #d1d5db;
}
.sp-block-reply.full {
  width: 60px;
}

/* Floating Format Toolbar */
.format-toolbar {
  position: fixed;
  display: none;
  background: #1e293b;
  border-radius: 8px;
  padding: 4px;
  gap: 2px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  z-index: 9999;
  flex-direction: row;
  border: 1px solid #334155;
}
.format-toolbar.visible {
  display: flex;
}
.format-toolbar button {
  background: transparent;
  border: none;
  color: #e2e8f0;
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  transition: 0.15s;
}
.format-toolbar button:hover {
  background: #334155;
  color: #38bdf8;
}

/* Inline Button Element */
.tg-inline-keyboard {
  padding: 0 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 4px;
  margin-bottom: 4px;
}
.tg-btn-row {
  display: flex;
  gap: 4px;
  width: 100%;
  flex-wrap: wrap;
}
.tg-inline-btn {
  background-color: var(--tele-btn-bg);
  color: var(--tele-btn-text);
  border: none;
  padding: 10px 5px;
  border-radius: 5px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  text-align: center;
  backdrop-filter: blur(5px);
  box-sizing: border-box;
}
.tg-inline-btn[data-size="1"] {
  flex: 0 0 100%;
}
.tg-inline-btn[data-size="2"] {
  flex: 0 0 calc(50% - 2px);
}
.tg-inline-btn[data-size="4"] {
  flex: 0 0 calc(25% - 3px);
}
.tg-inline-btn:hover {
  background-color: rgba(94, 153, 93, 0.9);
}

/* Reply Keyboard Element */
.tg-reply-keyboard {
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: #e8e8ed;
  border-top: 1px solid #d1d5db;
  border-radius: 0 0 12px 4px;
}
.tg-reply-row {
  display: flex;
  gap: 6px;
  width: 100%;
  flex-wrap: wrap;
}
.tg-reply-btn {
  background: #ffffff;
  color: #1e1e1e;
  border: none;
  padding: 10px 8px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-align: center;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
  outline: none;
  box-sizing: border-box;
}
.tg-reply-btn[data-size="1"] {
  flex: 0 0 100%;
}
.tg-reply-btn[data-size="2"] {
  flex: 0 0 calc(50% - 3px);
}
.tg-reply-btn[data-size="4"] {
  flex: 0 0 calc(25% - 5px);
}
.tg-reply-btn:focus {
  box-shadow: 0 0 0 2px #5288c1;
}

/* Card Wrapper & Meta */
.card-wrapper {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 10;
  transition: box-shadow 0.15s;
}
.card-wrapper.dragging {
  opacity: 0.75;
  cursor: grabbing;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}
.card-meta {
  width: 380px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 12px 12px 0 0;
  margin-bottom: -4px;
  padding-bottom: 16px;
  cursor: grab;
}
.card-title {
  color: #a3a3a3;
  font-size: 13px;
  font-weight: 600;
  cursor: text;
  outline: none;
  text-transform: uppercase;
}
.card-title:focus {
  color: #fff;
}
.card-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}
.delete-card-btn {
  background: transparent;
  border: none;
  color: #fb7185;
  cursor: pointer;
  font-size: 14px;
}
.delete-card-btn:hover {
  color: #e11d48;
}
.drag-handle {
  cursor: grab;
  color: #7f91a4;
  padding: 4px;
}
.drag-handle:active {
  cursor: grabbing;
}