* {
  margin: 0;
  padding: 0;
}

main {
  margin: 25px auto;
  display: flex;
  flex-direction: column;
  justify-content: space-evenly;
  align-items: center;
  background-color: white;
  padding: 20px;
}

@media screen and (min-width: 1024px) {
  main {
    width: 60%;
    border-radius: 32px;
    box-shadow: 0 8px 24px rgba(66, 110, 175, 0.06),
      0 6px 8px rgba(32, 77, 141, 0.08);
  }

  body {
    background-image: url("https://web.sdk.qcloud.com/trtc/webrtc/v5/demo/samples/assets/background.png");
  }
}

h1,
h2 {
  text-align: center;
  font-family: "Oxygen";
  margin-bottom: 0.8rem;
}

h3 {
  font-family: "Oxygen";
  margin-bottom: 18px;
}

@media screen and (max-width: 768px) {
  h1 {
    font-size: 1.5rem;
  }
  h2 {
    font-size: 1rem;
  }
}

.note {
  color: #084298;
  font-family: "Oxygen";
}

.warning {
  display: block;
  color: red;
  font-family: "Oxygen";
  margin: 3px 0;
}

.feature-container {
  width: 80%;
}

section {
  padding: 1rem;
  background-image: linear-gradient(
    rgb(237, 242, 252),
    rgb(255, 255, 255) 66.15%
  );
  border-radius: 16px;
  margin-bottom: 1rem;
  box-shadow: 0 8px 24px rgba(66, 110, 175, 0.06),
    0 6px 8px rgba(32, 77, 141, 0.08);
}

section:not(:last-child) {
  overflow: auto;
}

.step-section.disabled {
  opacity: 0.55;
  pointer-events: none;
}

.step-section.disabled .btn {
  background-color: #a8b4c8;
  border: 1px solid #a8b4c8;
  cursor: not-allowed;
}

.step-section.disabled .device-select {
  background-color: #eef1f5;
  border-color: #a8b4c8;
  color: #8b95a5;
}

.step-desc {
  font-family: "Oxygen";
  font-size: 0.85rem;
  color: #636363;
  margin-bottom: 12px;
  line-height: 1.5;
}

.video-container {
  width: 100%;
  display: flex;
  justify-content: center;
  max-width: 100%;
  overflow: hidden;
}

.video-sub-container {
  width: 50%;
  padding: 8px;
  max-width: 100%;
  box-sizing: border-box;
}

.local-screen-wrapper {
  margin-top: 12px;
}

.video-view {
  aspect-ratio: 16 / 9;
  background-color: black;
  max-width: 100%;
  overflow: hidden;
}

.video-view video {
  vertical-align: top;
  max-width: 100%;
  height: auto;
}

.video-status {
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: "Oxygen";
  font-size: 0.85rem;
  color: #636363;
  background: #fafbfc;
  border-top: 1px solid #f0f0f0;
}

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

.status-dot.online {
  background-color: #52c41a;
}

.status-dot.offline {
  background-color: #d9d9d9;
}

.btn-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.btn {
  flex-shrink: 0;
  background-color: #0d6efd;
  padding: 0.5rem;
  border: 1px solid #0d6efd;
  border-radius: 8px;
  margin-bottom: 3px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn:not(:last-child) {
  margin-right: 16px;
}

.btn:hover {
  background-color: #144fb6;
  border: 1px solid #144fb6;
  transition: all 0.2s ease-out;
}

.btn:disabled {
  background-color: rgb(182, 187, 198);
  border: 1px solid transparent;
  cursor: not-allowed;
}

.btn-text {
  font-size: 0.85rem;
  color: #ffffff;
  line-height: 1;
  vertical-align: middle;
}

.btn-secondary {
  background-color: #0d6efd;
  border-color: #0d6efd;
}

.btn-secondary .btn-text {
  color: #ffffff;
}

.btn-secondary:hover {
  background-color: #144fb6;
  border-color: #144fb6;
}

.btn-secondary.active {
  background-color: #cf1322;
  border-color: #cf1322;
}

.btn-secondary.active .btn-text {
  color: #ffffff;
}

.btn-secondary.active:hover {
  background-color: #a8071a;
  border-color: #a8071a;
}

.stream-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.control-item {
  display: flex;
  align-items: center;
}

/* Ensure buttons inside control-item have no extra margin */
.control-item .btn {
  margin-bottom: 0;
  margin-right: 0;
}

/* Only flatten the right side of a button when a device-select follows it */
.control-item .btn:has(+ .device-select) {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

.control-item .btn,
.device-select {
  height: 34px;
  box-sizing: border-box;
}

.device-select {
  font-size: 0.85rem;
  color: #4f586b;
  border-radius: 0 8px 8px 0;
  border: 1px solid #ced4da;
  border-left: none;
  padding: 0 6px;
  max-width: 140px;
}

.invite-input {
  border: 1px solid #d5d5d5;
  border-left: none;
  border-radius: 0 6px 6px 0;
  line-height: 30px;
  height: 32px;
  font-size: 12px;
  width: 100%;
  box-sizing: border-box;
  padding: 1px 6px;
}

.copy {
  display: flex;
  align-items: center;
  padding-top: 0.8rem;
  gap: 0;
}

.invite-actions {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.invite-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  margin: 0;
  color: #555;
  cursor: pointer;
  background-color: #f8f9fa;
  border: 1px solid #d5d5d5;
  border-radius: 0;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.invite-action-btn:first-child {
  border-radius: 6px 0 0 6px;
}

.invite-action-btn:last-child {
  border-radius: 0;
  border-left: none;
}

.invite-action-btn:hover {
  background-color: #e9ecef;
  color: #0d6efd;
}

.invite-action-btn:active {
  background-color: #dee2e6;
}

/* Toast */
#toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  padding: 12px 20px;
  border-radius: 8px;
  font-family: "Oxygen", sans-serif;
  font-size: 0.9rem;
  color: white;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  animation: slideIn 0.3s ease, fadeOut 0.3s ease 2.7s forwards;
  max-width: 320px;
  word-break: break-word;
}

.toast.success {
  background-color: #52c41a;
}

.toast.error {
  background-color: #cf1322;
  animation: slideIn 0.3s ease;
}

.toast.fade-out {
  animation: fadeOut 0.3s ease forwards;
}

.toast.info {
  background-color: #0d6efd;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes fadeOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

/* Responsive */
@media screen and (max-width: 1024px) {
  .video-sub-container {
    width: 45%;
  }
}

/* iframe mode */
body.in-iframe {
  background-image: none !important;
}

body.in-iframe header-nav {
  display: none;
}

body.in-iframe main {
  width: 100%;
  margin: 0;
  border-radius: 0;
  box-shadow: none;
  padding: 0;
  overflow-x: hidden;
}

body.in-iframe {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

body.in-iframe::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

html:has(body.in-iframe) {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

html:has(body.in-iframe)::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

@media screen and (max-width: 768px) {
  .feature-container {
    width: 100%;
  }

  .video-sub-container {
    width: 100%;
  }

  .video-container {
    flex-direction: column;
    align-items: center;
  }

  .btn-list {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    margin-right: 0;
  }
}