html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
}

/* ==============================
   Student Chatbot Launcher
   ============================== */
.chatbot-launcher {
  position: fixed;
  right: 18px;
  bottom: 28px;
  z-index: 4000;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}

.chatbot-fab {
  width: 56px;
  height: 56px;
  border: none;
  border-radius: 50%;
  background: #2f3238;
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.35);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.2s ease;
}

.chatbot-fab:hover {
  transform: translateY(-2px);
  background: #3a3f46;
  box-shadow: 0 10px 32px rgba(0, 0, 0, 0.4);
}

.chatbot-panel {
  width: 360px;
  background: #1c1f24;
  color: #fff;
  border-radius: 16px;
  padding: 12px 12px 12px;
  box-shadow: 0 14px 38px rgba(0, 0, 0, 0.55);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.chatbot-panel.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.chatbot-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 4px 8px;
}

.chatbot-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, #374151, #111827);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #f8fafc;
  position: relative;
}

.chatbot-avatar .status-dot {
  position: absolute;
  right: -2px;
  bottom: -2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #41c66f;
  border: 2px solid #1f2227;
}

.chatbot-meta .title {
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1.1;
}

.chatbot-meta .subtitle {
  font-size: 0.8rem;
  color: #9ca3af;
}

.chatbot-header-actions {
  display: flex;
  gap: 6px;
  align-items: center;
}

.chatbot-icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: none;
  background: #2f3238;
  color: #e5e7eb;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
  transition: transform 0.12s ease, background 0.12s ease;
}

.chatbot-icon-btn:hover {
  transform: translateY(-1px);
  background: #3a3f46;
}

.chatbot-icon-btn.ghost {
  background: transparent;
  color: #e5e7eb;
  box-shadow: none;
}

.chatbot-icon-btn.ghost:hover {
  background: #2b2f36;
}

.chatbot-body {
  background: #24272d;
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 12px;
  padding: 12px;
  font-size: 0.9rem;
  color: #d1d5db;
  line-height: 1.4;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ── Global Staggered Fade-in Animations ── */
@keyframes page-fade-in {
    from { 
        opacity: 0; 
        transform: translateY(12px); 
    }
    to { 
        opacity: 1; 
        transform: none; 
    }
}

.animate-fade-in {
    animation: page-fade-in 0.4s ease both;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.15s; }
.animate-delay-3 { animation-delay: 0.2s; }
.animate-delay-4 { animation-delay: 0.25s; }