html,
body {
  background-color: #d8dee8;
  margin: 0;
  padding: 0;
  font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
}

.scrollable-container {
  min-height: 100vh;
  padding: 0 20px;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

#container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

#ui-card {
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  z-index: 1000;
  width: 100%;
}

#ui-card .card-inner {
  pointer-events: auto;
  width: min(1600px, 95%);
  min-height: min(800px, auto);
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.06);
  -webkit-backdrop-filter: blur(12px) saturate(120%);
  backdrop-filter: blur(12px) saturate(120%);
  border-radius: 14px;
  padding: 0;
  box-shadow: 0 12px 30px rgba(2,6,23,0.4);
  text-align: center;
  border: 1px solid rgba(0,0,0,0.10);
  color: rgba(0,0,0,0.95);
  transition: transform 220ms ease, box-shadow 220ms ease;
  margin: 40px 0;
}

.card-title {
  margin: 0 0 6px 0;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
  font-size: 35px;
  color: rgba(42, 63, 83, 0.95);
  text-shadow: 0 2px 8px rgba(0,0,0,0.45);
}
.card-title .version { font-size: 0.5em; color: rgba(0,0,0,0.8); margin-left: 5px; }
.card-sub { color: rgba(0,0,0,0.80); margin: 1px 0 18px 0; margin-bottom: 30px; }

.card-input {
  width: 100%;
  padding: 14px 16px;
  font-size: 16px;
  border-radius: 10px;
  border: 1px solid rgba(0,0,0,0.14);
  background: rgba(0,0,0,0.04);
  color: rgba(0,0,0,0.95);
  outline: none;
  box-sizing: border-box;
  margin-bottom: 14px;
}
.card-input::placeholder { color: rgba(0,0,0,0.6); }
.card-input:focus { box-shadow: 0 8px 26px rgba(210,180,140,0.12); border-color: rgba(0,0,0,0.22); }

.card-button {
  display: inline-block;
  width: 100%;
  padding: 14px 18px;
  font-size: 16px;
  border-radius: 10px;
  border: 1px solid rgba(0,0,0,0.14);
  background: linear-gradient(90deg, rgba(49, 96, 104, 0.95), rgba(80, 93, 98, 0.95));
  color: #ffffff;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(0,0,0,0.28);
  margin-bottom: 2%;
}
.card-button:active { transform: translateY(1px); }

.card-note { margin-top: 14px; color: rgba(0,0,0,0.85); font-size: 16px; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

@media (min-width: 1440px) {
  .card-title { font-size: 45px; }
  .card-input, .card-button { font-size: 18px; }
  #questions { font-size: 16px; }
}

@media (max-width: 768px) {
  .scrollable-container {
    padding: 10px;
  }
  
  #ui-card .card-inner {
    width: 100%;
    margin: 10px 0;
  }
  
  .card-content {
    padding: 20px;
  }
  
  .card-title { 
    font-size: 32px;
    word-break: break-word;
  }
  
  .card-input, .card-button { 
    font-size: 16px;
  }
  
  .card-footer {
    padding: 12px;
  }
}

@media (max-width: 520px) {
  .modal {
    padding: 10px;
  }

  .modal-content {
    padding: 16px;
    width: 95%;
    margin: 10px auto;
  }

  .modal-body {
    max-height: 70vh;
  }

  .card-title { 
    font-size: 28px; 
  }
  
  .card-input, .card-button { 
    padding: 12px;
    font-size: 16px;
  }
  
  #questions { 
    font-size: 14px;
    padding: 5px;
  }
  
  .question {
    padding: 12px;
    margin-bottom: 12px;
  }
  
  .question h3 {
    font-size: 16px;
    margin-bottom: 8px;
  }
  
  .question p {
    font-size: 14px;
  }
  
  .footer-links {
    flex-direction: column;
    gap: 10px;
  }
  
  .align-right {
    margin-left: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .card-footer {
    padding: 10px;
  }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(10px) scale(0.998); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.card-title { transition: transform 220ms ease, text-shadow 220ms ease; }
.card-title.glow { text-shadow: 0 8px 34px rgba(88,200,255,0.20), 0 2px 12px rgba(88,200,255,0.10); transform: translateY(-2px); }

.card-input { transition: box-shadow 180ms ease, border-color 180ms ease, background 180ms ease, transform 180ms ease; }

.card-button { transition: transform 180ms ease, box-shadow 220ms ease, filter 180ms ease; background-size: 200% 100%; }
.card-button:hover { transform: translateY(-3px); box-shadow: 0 18px 40px rgba(44,135,173,0.16); filter: saturate(1.06); }
.card-button:active { transform: translateY(1px); }
.card-button:disabled { opacity: 0.7; cursor: not-allowed; transform: none; box-shadow: 0 6px 16px rgba(0,0,0,0.16); }

#ui-card.ui-interacting .card-inner { box-shadow: 0 20px 50px rgba(2,6,23,0.55); border-color: rgba(88,200,255,0.12); transform: translateY(-6px); }
#ui-card.ui-interacting .card-title { transform: translateY(-2px); }

#container.ui-interacting canvas { filter: blur(4px) contrast(1.02) brightness(0.88); transition: filter 300ms ease; }

@media (prefers-reduced-motion: reduce) {
  #ui-card, .card-inner, .card-button, .card-input, .card-title { animation: none; transition: none !important; }
  #container.ui-interacting canvas { filter: none !important; }
}

.highlight {
  font-weight: bold;
  color: #006103;
  background-color: rgba(21, 255, 0, 0.322);
  padding: 2px 6px;
  border-radius: 4px;
}

#questions {
  margin-top: 20px;
  text-align: left;
  flex: 1;
  padding: 10px 15px 10px 15px;
  font-size: 16px;
  min-height: 0;
}

#questions::-webkit-scrollbar {
  width: 8px;
}

#questions::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.062);
  border-radius: 4px;
}

#questions::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}

#questions::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

#questions ul {
  list-style: none;
  padding: 0;
  margin: 10px 0;
}

#questions li {
  margin: 8px 0;
  padding: 12px 16px;
  border-radius: 6px;
  background: rgba(0,0,0,0.05);
  border: 1px solid rgba(0,0,0,0.08);
  font-size: 1.05em;
  line-height: 1.4;
}

#questions li.highlight {
  border-color: rgb(18, 136, 21);
  border-width: 3px;
}

.question {
  margin-bottom: 20px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.04);
  transition: all 0.3s ease;
  backdrop-filter: blur(8px);
  animation: slideInUp 0.5s ease-out both;
  animation-delay: calc(var(--index, 0) * 0.1s);
}

.no-question-animation .question {
  animation: none !important;
  animation-delay: 0s !important;
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.question:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.08), 0 3px 6px rgba(0, 0, 0, 0.06);
  border-color: rgba(255, 255, 255, 0.18);
}

.question h3 {
  margin: 0 0 12px 0;
  font-size: 18px;
  font-weight: 600;
  color: rgba(0, 0, 0, 0.95);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  padding-bottom: 8px;
}

.question p {
  margin: 0;
  color: rgba(0, 0, 0, 0.85);
  line-height: 1.5;
}

.card-content {
  flex: 1;
  padding: clamp(20px, 4vw, 40px);
  display: flex;
  flex-direction: column;
  min-height: 0;
}

#url-form {
  flex-shrink: 0;
}

.card-footer {
  flex-shrink: 0;
  padding: 16px clamp(20px, 4vw, 40px);
  border-top: 1px solid rgba(0, 0, 0, 0.199);
  background: rgba(255, 255, 255, 0.02);
  border-radius: 0 0 14px 14px;
  font-size: 14px;
  color: rgba(0, 0, 0, 0.7);
}

.footer-sections {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}

.card-footer a {
  color: rgba(0, 0, 0, 0.8);
  text-decoration: none;
  transition: color 200ms ease;
}

.card-footer a:hover {
  color: rgb(0, 0, 0);
  text-decoration: underline;
}

.footer-links {
  display: flex;
  gap: 20px;
  align-items: center;
}

@media (max-width: 520px) {
  .card-footer {
    flex-direction: column;
    gap: 10px;
    text-align: center;
    font-size: 12px;
  }
  
  .footer-links {
    justify-content: center;
  }
}

.success-message{
    font-size: 16px;
    margin-bottom: 10px;
  margin-top: 5px;
  text-align: center;
}

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.288);
  z-index: 9999;
  backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  overflow-y: auto;
  padding: 20px 0;
}

.modal.show {
  display: flex;
}

.modal-content {
  background: rgba(217, 226, 240, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 24px;
  max-width: 600px;
  width: 90%;
  color: rgba(0, 0, 0, 0.9);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
  margin: auto;
}

.modal-content h2 {
  margin: 0 0 16px 0;
  font-size: 24px;
  color: rgba(0, 0, 0, 0.95);
  text-align: center;
}

.modal-body {
  margin-bottom: 20px;
  overflow-y: auto;
  max-height: 60vh;
  padding-right: 10px;
}

.modal-body ul {
  margin: 16px 0;
  padding-left: 24px;
}

.modal-body li {
  margin: 8px 0;
  color: rgba(0, 0, 0, 0.8);
}

.modal-button {
  background: linear-gradient(90deg, rgba(49, 96, 104, 0.95), rgba(44, 135, 173, 0.95));
  border: none;
  color: white;
  padding: 12px 24px;
    border-radius: 8px;
  cursor: pointer;
  font-size: 16px;
  width: 100%;
  transition: transform 180ms ease, filter 180ms ease;
}

.modal-button:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.modal-button:active {
  transform: translateY(1px);
}

.align-right {
  margin-left: auto;
}

@media (max-width: 520px) {
  .align-right {
    margin-left: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
}

.error-message {
  font-size: 16px;
  margin-bottom: 10px;
  margin-top: 5px;
  text-align: center;
}

a {
  margin: 5px;
}

.theme-toggle {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: none;
  background: rgba(0, 0, 0, 0.171);
  backdrop-filter: blur(10px);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  transition: all 0.3s ease;
  z-index: 1500;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.theme-toggle:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
  background: rgba(0, 0, 0, 0.1);
}

.theme-toggle:active {
  transform: translateY(0);
}

.light .question p,
.light .question *,
.light #questions p,
.light #questions * {
  color: rgba(0, 0, 0, 0.85) !important;
}

.light .question h3 {
  color: rgba(0, 0, 0, 0.95) !important;
}