html {
  overflow: hidden;
}
@media (max-width: 991px) {
  html {
    overflow-y: auto;
    overflow-x: hidden;
  }
}

body {
  height: 100vh;
}
@media (max-width: 991px) {
  body {
    overflow-y: auto;
    overflow-x: hidden;
  }
}

.agora-page {
  width: 100%;
  height: 100vh;
}
.agora-page__sidebar {
  width: 394px;
  height: 100vh;
  background-color: var(--white);
}
.agora-page__sidebar .sidebar-teacher-icon {
  transform: rotate(20deg);
  opacity: 0.1;
}
.agora-page__sidebar .sidebar-tabs {
  height: 45px;
}
.agora-page__sidebar .sidebar-tabs .navbar-item {
  color: var(--gray-500);
}
.agora-page__sidebar .sidebar-tabs .navbar-item:before {
  display: none;
}
.agora-page__sidebar .sidebar-tabs .navbar-item.active {
  color: var(--black);
  background-color: var(--white);
}
.agora-page__sidebar .sidebar-tabs .navbar-item:hover {
  background-color: var(--white);
}
.agora-page__sidebar .sidebar-chats-cards {
  width: 100%;
  height: calc(100vh - 296px);
  transition: all 0.3s ease;
  overflow-x: hidden;
  overflow-y: auto;
}
@media (max-width: 991px) {
  .agora-page__sidebar .sidebar-chats-cards {
    height: calc(100vh - 320px);
  }
}
@media (max-width: 991px) {
  .agora-page__sidebar {
    position: fixed;
    top: 110%;
    width: 100vw;
    height: 100vh;
    z-index: 570;
    transition: top 0.4s cubic-bezier(0.43, 0.83, 0.54, 1.02), opacity 0.4s linear;
  }
  .agora-page__sidebar.show-sidebar {
    top: 0;
  }
}
.agora-page__main {
  width: calc(100% - 394px);
  height: 100vh;
}
.agora-page__main-content {
  width: 100%;
  height: calc(100% - 71px);
  padding: 16px;
  background-color: var(--gray);
  transition: all 0.3s ease;
  overflow-x: hidden;
  overflow-y: auto;
}
@media (max-width: 991px) {
  .agora-page__main {
    width: 100%;
  }
}
.agora-page__player-card {
  position: relative;
  width: 100%;
  height: 880px;
}
.agora-page__player-card *, .agora-page__player-card * > div, .agora-page__player-card * video {
  border-radius: 12px;
}
.agora-page__player-card video {
  width: 100% !important;
  height: 100% !important;
  -o-object-fit: cover;
     object-fit: cover;
}
@media (max-width: 991px) {
  .agora-page__player-card {
    height: 400px;
    min-height: 300px;
  }
  .agora-page__player-card video {
    width: 100% !important;
    height: 100% !important;
    -o-object-fit: cover;
       object-fit: cover;
    background-color: #000;
  }
}
.agora-page__top-header {
  height: 71px;
}
.agora-page .remote-stream {
  width: 260px;
  height: 170px;
}
.agora-page .remote-stream *, .agora-page .remote-stream * > div, .agora-page .remote-stream * video {
  border-radius: 12px;
}
.agora-page .stream-bottom-actions__card-mask {
  position: absolute;
  inset: -8px;
  background: var(--gray-100);
  border-radius: 12px;
}
.agora-page .stream-bottom-actions__timer {
  min-width: 132px;
}
.agora-page .stream-bottom-actions__toggle-button .active-icon {
  display: none;
}
.agora-page .stream-bottom-actions__toggle-button .disable-icon {
  display: block;
}
.agora-page .stream-bottom-actions__toggle-button.active .active-icon {
  display: block;
}
.agora-page .stream-bottom-actions__toggle-button.active .disable-icon {
  display: none;
}
.agora-page .sidebar-user-card__mask {
  position: absolute;
  inset: 8px;
  bottom: -8px;
  border-radius: 16px;
  border: 1px solid var(--primary);
  opacity: 0.5;
  background-color: var(--white);
  z-index: 1;
}
.agora-page .chat-card {
  display: flex;
  flex-direction: column;
}
.agora-page .chat-card .chat-user-info .dot {
  width: 4px;
  height: 4px;
  background-color: var(--gray-300);
  border-radius: 50%;
}
.agora-page .chat-card .chat-message {
  width: calc(100% - 100px);
}
.agora-page .chat-card.own-chat {
  align-items: flex-end;
}
.agora-page .chat-card.own-chat .chat-user-info {
  flex-direction: row-reverse;
}
.agora-page .chat-card.own-chat .chat-message {
  border-radius: 12px 0 12px 12px;
  background: var(--primary);
  color: var(--white);
}
.agora-page .chat-card.others-chat {
  align-items: flex-start;
}
.agora-page .chat-card.others-chat .chat-user-info {
  flex-direction: row;
}
.agora-page .chat-card.others-chat .chat-message {
  border-radius: 0 12px 12px 12px;
  background: var(--gray-200);
  color: var(--gray-500);
}

.learning-page-notify-counter {
  position: absolute;
  top: 4px;
  right: 4px;
  min-width: 16px;
  height: 16px;
  z-index: 2;
}
.learning-page-notify-counter .rtl {
  right: auto;
  left: 4px;
}

.whiteboard-header {
  border-radius: 12px 12px 0 0;
  border-bottom: 1px solid var(--gray-200);
}
.whiteboard-header .whiteboard-page-info {
  border-left: 1px solid var(--gray-300);
  padding-left: 16px;
}

.whiteboard-canvas-container {
  position: relative;
  width: 100%;
  height: 800px;
  overflow: hidden;
}
@media (max-width: 991px) {
  .whiteboard-canvas-container {
    height: calc(100vh - 400px);
    min-height: 400px;
  }
}

.whiteboard-canvas {
  width: 100%;
  height: 100%;
  cursor: crosshair;
  background-color: white;
  border-radius: 0 0 12px 12px;
  transition: transform 0.2s ease;
}
.whiteboard-canvas:hover {
  cursor: crosshair;
}
.whiteboard-canvas.view-only {
  cursor: default;
}
.whiteboard-canvas.view-only:hover {
  cursor: default;
}

.whiteboard-toolbar {
  top: 16px;
  left: 16px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 16px;
  -webkit-backdrop-filter: blur(10px);
          backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  z-index: 10;
}
.whiteboard-toolbar .tool-group {
  position: relative;
}
.whiteboard-toolbar .tool-group:not(:last-child)::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 1px;
  background: var(--gray-300);
}
.whiteboard-toolbar .tool-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--gray-600);
  background: transparent;
  border: 2px solid transparent;
}
.whiteboard-toolbar .tool-btn:hover {
  background: var(--gray-100);
  color: var(--gray-800);
  transform: translateY(-1px);
}
.whiteboard-toolbar .tool-btn.active {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.3);
}
.whiteboard-toolbar .tool-btn.active:hover {
  background: var(--primary);
  color: white;
}
.whiteboard-toolbar .tool-btn i {
  font-size: 16px;
}
.whiteboard-toolbar .current-color-indicator,
.whiteboard-toolbar .current-size-indicator {
  margin: auto;
  transition: all 0.2s ease;
}
.whiteboard-toolbar .current-color-indicator {
  border: 2px solid rgba(255, 255, 255, 0.8) !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}
.whiteboard-toolbar .current-size-indicator {
  background-color: #666 !important;
}

.whiteboard-colors {
  top: 16px;
  left: 80px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 16px;
  -webkit-backdrop-filter: blur(10px);
          backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  z-index: 11;
}
.whiteboard-colors .color-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.whiteboard-colors .color-btn {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  cursor: pointer;
  border: 3px solid white;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  transition: all 0.2s ease;
}
.whiteboard-colors .color-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}
.whiteboard-colors .color-btn.active {
  border-color: var(--primary);
  transform: scale(1.15);
  box-shadow: 0 4px 16px rgba(var(--primary-rgb), 0.4);
}

.whiteboard-brush-size {
  top: 16px;
  left: 80px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 16px;
  -webkit-backdrop-filter: blur(10px);
          backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  z-index: 11;
}
.whiteboard-brush-size .size-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.whiteboard-brush-size .size-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
  background: transparent;
  border: 2px solid transparent;
}
.whiteboard-brush-size .size-btn:hover {
  background: var(--gray-100);
  transform: translateY(-1px);
}
.whiteboard-brush-size .size-btn.active {
  background: var(--primary);
  box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.3);
}
.whiteboard-brush-size .size-btn.active .size-dot {
  background: white !important;
}
.whiteboard-brush-size .size-btn .size-dot {
  transition: all 0.2s ease;
}

.whiteboard-pages {
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.95);
  border-radius: 12px;
  -webkit-backdrop-filter: blur(10px);
          backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  z-index: 10;
}

.whiteboard-zoom {
  bottom: 16px;
  right: 16px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 12px;
  -webkit-backdrop-filter: blur(10px);
          backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  z-index: 10;
}
.whiteboard-zoom .zoom-level {
  min-width: 40px;
  text-align: center;
  font-weight: 600;
}

.whiteboard-tools {
  top: 16px;
  left: 16px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 12px;
  -webkit-backdrop-filter: blur(10px);
          backdrop-filter: blur(10px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  z-index: 10;
}
.whiteboard-tools .js-whiteboard-tool {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.whiteboard-tools .js-whiteboard-tool:hover {
  background-color: var(--gray-100);
  transform: scale(1.05);
}
.whiteboard-tools .js-whiteboard-tool.active {
  background-color: var(--primary);
  color: white !important;
}
.whiteboard-tools .js-whiteboard-tool.active .icons {
  color: white !important;
}

.js-whiteboard-tool[data-color="#000000"] {
  border: 2px solid #000000;
}
.js-whiteboard-tool[data-color="#000000"].active {
  background-color: #000000;
}

.js-whiteboard-tool[data-color="#ff0000"] {
  border: 2px solid #ff0000;
}
.js-whiteboard-tool[data-color="#ff0000"].active {
  background-color: #ff0000;
}

.js-whiteboard-tool[data-color="#0000ff"] {
  border: 2px solid #0000ff;
}
.js-whiteboard-tool[data-color="#0000ff"].active {
  background-color: #0000ff;
}

.js-whiteboard-tool[data-tool=eraser] {
  border: 2px solid var(--gray-400);
}
.js-whiteboard-tool[data-tool=eraser].active {
  background-color: var(--gray-400);
}

@media (max-width: 991px) {
  .whiteboard-tools {
    flex-direction: row;
    top: auto;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    gap: 4px;
    padding: 12px 16px;
  }
  .whiteboard-tools .js-whiteboard-tool {
    width: 32px;
    height: 32px;
  }
}