* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: "Work Sans", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: #343a40;
  background: #ffffff;
}

.app { min-height: 100vh; display: flex; flex-direction: column; }
.app-content { flex: 1; padding-top: 70px; } 

.app-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 20px;
  background: #f8f9fa;
  box-shadow: 0 2px 4px rgba(0,0,0,.1);
}

.app-header__logo { display: flex; align-items: center; text-decoration: none; }
.app-header__logo img { width: 150px; height: auto; display: block; }

.app-header__nav {
  display: flex;
  align-items: center;
  gap: 15px;
}

.app-header__link {
  color: #333;
  text-decoration: none;
  font-size: 1rem;
  padding: 5px 10px;
  border-radius: 5px;
  transition: background-color .2s ease, color .2s ease;
}
.app-header__link:hover { background: #e2e6ea; color: #000; }

.app-header__buttons { display: flex; gap: 10px; align-items: center; }

.userDropdown { position: relative; display: inline-block; }
.userDropdown_username {
  background: transparent;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1rem;
  padding: 5px 10px;
  color: #333;
  transition: background-color .2s ease, color .2s ease;
}
.userDropdown_username:hover { background: #e2e6ea; color: #000; }

.app-header__menu-icon {
  display: none;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 1.5rem;
  padding: 6px 10px;
  border-radius: 6px;
}

@media (max-width: 768px) {
  .app-header__menu-icon { display: block; }

  .app-header__nav {
    display: none;
    position: fixed;
    top: 60px;
    left: 0; right: 0;
    padding: 12px 20px;
    background: #f8f9fa;
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .app-header__nav.active { display: flex; }
  .app-header__link { width: 100%; text-align: left; }
}

.bio-text{
    font-size: 12px;
}


.app-footer {
  background: #f0f0f0;
  color: #666;
  text-align: center;
  padding: 10px;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

.page-title {
  margin: 24px 0 0;
  text-align: center;
  font-size: 2rem;
  font-weight: 600;
}

.physical-therapy { padding: 24px 0 60px; }

.video-intro-section { padding: 40px 0; }

.video-intro-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 3rem;
  align-items: start;
}

.video-intro-player {
  position: relative;
  height: 0;
  padding-bottom: 56.25%;
  overflow: hidden;
  border-radius: 15px;
  box-shadow: 0 4px 20px rgba(0,0,0,.15);
}
.video-intro-player iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.overview-text p { color: #6c757d; margin: 0 0 1rem; line-height: 1.6; }
.overview-text .lead {
  color: #343a40;
  font-size: 1.25rem;
  font-weight: 600;
}

.ora-chatbot .chatbot-button {
  position: fixed;
  right: 30px;
  bottom: 30px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  cursor: pointer;
  z-index: 1000;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0,0,0,.2);
  transition: transform .2s ease;
}
.ora-chatbot .chatbot-button:hover { transform: scale(1.06); }
.ora-chatbot .chatbot-button:active { transform: scale(.98); }
.ora-chatbot .chatbot-button img { width: 100%; height: 100%; display: block; object-fit: cover; }

@media (max-width: 768px) {
  .video-intro-content { grid-template-columns: 1fr; text-align: center; }
  .ora-chatbot .chatbot-button { right: 20px; bottom: 20px; width: 50px; height: 50px; }
}

@media (max-width: 480px) {
  .container { padding: 0 15px; }
  .page-title { font-size: 1.8rem; }
  .overview-text .lead { font-size: 1.1rem; }
}