.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;
}

.input-panel::after,
.glass-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(124,60,255,0.1), rgba(0,191,255,0.1));
  mix-blend-mode: screen;
  animation: tintShift 12s ease-in-out infinite alternate;
  pointer-events: none;
  z-index: 0;
}

@keyframes tintShift {
  from { opacity: 0.1; }
  to { opacity: 0.2; }
}
.input-panel,
.glass-card {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(18px) saturate(1.3);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  border: 1px solid rgba(255, 255, 255, 0.2);
  position: relative;
  overflow: hidden;
}
.input-panel:hover::before,
.glass-card:hover::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(120deg, rgba(255,255,255,0.15) 0%, transparent 60%);
  transform: translateX(-100%);
  animation: lightSweep 1.5s ease-out forwards;
  pointer-events: none;
}

@keyframes lightSweep {
  to {
    transform: translateX(100%);
  }
}
/* --- Glass UI Overhaul --- */

/* 1. Animated glass background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: radial-gradient(ellipse at 60% 40%, rgba(255, 255, 255, 0.05) 0%, rgba(255,255,255,0.03) 100%),
              linear-gradient(135deg, #7c3cff33 0%, #00bfff33 100%);
  filter: blur(48px) brightness(1.15) contrast(1.05) saturate(1.3);
}

@keyframes glassFlow {
  0% {
    background-position: 60% 40%, 0% 0%;
    filter: hue-rotate(0deg);
  }
  100% {
    background-position: 40% 60%, 100% 100%;
    filter: hue-rotate(20deg);
  }
}

/* 2. Glass columns and panels */
.glass-columns {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: stretch;
  gap: 2.5rem;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto 2rem;
  position: relative;
  z-index: 1;
}

.input-panel,
.output-panel {
  flex: 1 1 320px;
  min-width: 300px;
  max-width: 520px;
  margin: 1rem 0;
  padding: 2.5rem 2rem 2rem 2rem;
  border-radius: 2rem;
  background: rgba(255,255,255,0.18);
  box-shadow:
    0 12px 48px rgba(0,123,255,0.2),
    inset 0 1px 3px rgba(255,255,255,0.2);
  backdrop-filter: blur(24px) saturate(1.3);
  -webkit-backdrop-filter: blur(24px) saturate(1.3);
  border: 1.5px solid rgba(255,255,255,0.22);
  transition: box-shadow 0.4s cubic-bezier(.4,2,.6,1), background 0.4s;
  position: relative;
  z-index: 2;
  color: #f7f7fa;
}

/* --- Realistic Fluid Glass Light Reflection Effect --- */
.glass-panel,
.input-panel,
.output-panel {
  position: relative;
  overflow: hidden;
}

.glass-panel::before,
.input-panel::before,
.output-panel::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0) 60%);
  transform: rotate(25deg);
  pointer-events: none;
  animation: shine 6s infinite;
  border-radius: inherit;
  z-index: 3;
}

@keyframes shine {
  0% {
    transform: translateX(-100%) rotate(25deg);
  }
  100% {
    transform: translateX(100%) rotate(25deg);
  }
}

/* 3. Floating header glass-like effects */
.floating-header {
  background: rgba(255,255,255,0.22);
  backdrop-filter: blur(18px) saturate(1.3);
  border: 1.5px solid rgba(0,123,255,0.12);
  box-shadow: 0 2px 18px 0 rgba(0,123,255,0.09);
  color: #222;
}

.brand-title {
  padding: 0.5rem 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-logo {
  border-radius: 50%;
  background: transparent;
}

.brand-name-light {
  font-weight: 300;
}

/* 4. Inputs and outputs glass-like effects */
textarea, #output, #output.active {
  background: rgba(255,255,255,0.13);
  border: 1.5px solid rgba(0,123,255,0.18);
  box-shadow: 0 0 18px rgba(0,123,255,0.13);
  color: #fff;
  font-size: 1.1rem;
  border-radius: 1.2rem;
  backdrop-filter: blur(12px) saturate(1.2);
  transition: box-shadow 0.3s, background 0.3s;
}

/* 5. Modern button style */
.floating-tab-bar button {
  background: rgba(255,255,255,0.18);
  border: 1.5px solid rgba(0,123,255,0.18);
  color: #fff;
  font-weight: 600;
  border-radius: 2rem;
  box-shadow: 0 2px 12px rgba(0,123,255,0.10);
  backdrop-filter: blur(8px) saturate(1.2);
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}

.floating-tab-bar button:hover {
  background: rgba(0,123,255,0.18);
  color: #fff;
  box-shadow: 0 0 18px #7c3cff55, 0 0 24px #00bfff33;
  transform: translateY(-2px) scale(1.04);
}


/* 7. Accessibility: readable text */
body, .input-panel, .output-panel, textarea, #output, .floating-header {
  color: #f7f7fa;
  text-shadow: 0 1px 2px rgba(0,0,0,0.10);
  background: none;
}

/* 8. Subtle glowing border on focus */
textarea:focus, .floating-tab-bar button:focus {
  outline: none;
  box-shadow: 0 0 0 3px #00bfff55;
  border-color: #00bfff;
}

/* 9. Fade-in for panels and about section */
.input-panel, .output-panel, .about {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeInGlass 1.1s cubic-bezier(.4,2,.6,1) forwards;
}

/* Staggered animation delays for fade-in */
.input-panel {
  animation-delay: 0.2s;
}
.output-panel {
  animation-delay: 0.4s;
}
.about {
  animation-delay: 0.6s;
}

@keyframes fadeInGlass {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- End Glass UI Overhaul --- */

/* Output fade-in animation */
#output,
#output.active {
  margin-top: 1rem;
  margin-bottom: 2rem;
  padding: 1.75rem;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 123, 255, 0.25);
  box-shadow: 0 0 18px rgba(0, 123, 255, 0.3);
  color: #fff;
  max-width: 600px;
  width: 100%;
  display: block;
  text-align: left;
  white-space: pre-wrap;
  word-break: break-word;
  box-sizing: border-box;
  font-size: 1rem;
  line-height: 1.6;
  transition: all 0.3s ease;
}

.definition-output {
  margin: 0.5rem 0;
  padding: 0.65rem 0.9rem;
  border-radius: 0.75rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
}
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600&display=swap');

body {
  font-family: 'Poppins', sans-serif;
  margin: 0;
  padding: 0;
  min-height: 100vh;
  background: linear-gradient(135deg, #dfe9f3, #ffffff);
  color: #333;
  display: flex;
  flex-direction: column;
  align-items: center;
}

main {
  width: 100%;
  max-width: 1200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 13rem 1rem 2rem; /* Increased top padding for header */
  gap: 2rem;
  box-sizing: border-box;
}

.glass-card {
  width: 90%;
  max-width: 600px;
  margin-top: 10rem;
  margin-bottom: 4rem;
  padding: 2rem 2rem 3rem;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  animation: fadeIn 0.8s ease forwards;
  opacity: 0;
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: linear-gradient(120deg, rgba(255,255,255,0.15), transparent);
  transform: rotate(25deg);
  animation: shimmer 4s infinite;
  pointer-events: none;
  z-index: 0;
}

@keyframes shimmer {
  0% { transform: translateX(-100%) rotate(25deg); }
  100% { transform: translateX(100%) rotate(25deg); }
}

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

.floating-header {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 1rem;
  text-align: center;
  font-size: 1.5rem;
  font-weight: bold;
  color: #333;
  z-index: 10;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  margin-bottom: 2rem;
  border-radius: 16px;
}

textarea {
  width: 100%;
  max-width: 100%;
  min-width: 220px;
  padding: 1.5rem;
  border-radius: 16px;
  border: 1px solid rgba(0, 123, 255, 0.45);
  resize: vertical;
  font-size: 1rem;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  box-shadow: 0 0 12px rgba(0, 123, 255, 0.3), inset 0 1px 3px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(10px);
  transition: box-shadow 0.3s ease, transform 0.2s ease;
  margin-bottom: 0.5rem;
  box-sizing: border-box;
}

.input-group {
  width: 100%;
  max-width: 440px;
  margin: 0 auto 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.input-group label {
  margin-bottom: 0.5rem;
  font-weight: 600;
  font-size: 1rem;
  padding-left: 0.25rem;
  color: inherit;
}

.buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

button {
  padding: 0.75rem 1.5rem;
  border: 1px solid rgba(0, 123, 255, 0.6);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.2);
  color: #000;
  font-weight: 500;
  backdrop-filter: blur(10px);
  box-shadow: 0 0 10px rgba(0, 123, 255, 0.3), 0 0 20px rgba(0, 123, 255, 0.2);
  transition: all 0.2s ease-in-out;
  position: relative;
  overflow: hidden;
  z-index: 0;
}

button .icon {
  margin-right: 0.5rem;
  font-size: 1rem;
  display: inline-block;
  transition: transform 0.2s ease, filter 0.2s ease;
}

/* Optional icon hover effect */
button:hover .icon {
  transform: scale(1.1);
  filter: drop-shadow(0 0 6px rgba(0, 123, 255, 0.8));
}

button::after {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  width: calc(100% + 4px);
  height: calc(100% + 4px);
  background: linear-gradient(45deg, #00ffe0, #007bff, #6f00ff, #00ffe0);
  background-size: 400% 400%;
  animation: pulseBorder 4s linear infinite;
  z-index: -1;
  filter: blur(6px);
  opacity: 0.5;
  border-radius: 10px;
}

@keyframes pulseBorder {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

#loadingIndicator {
  font-size: 0.9rem;
  color: #666;
  margin-top: 1rem;
  text-align: center;
}

button:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.03);
  box-shadow: 0 0 15px rgba(0, 123, 255, 0.6), 0 0 25px rgba(0, 123, 255, 0.4);
}

button:active {
  transform: scale(0.96);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.input-group,
.output-group {
  width: 100%;
  max-width: 440px;
  margin: 0 auto 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Output group container styles */
.output-group {
  width: 100%;
  max-width: 600px;
  margin: 0 auto 2rem; /* No top margin, only bottom */
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.output-group h2 {
  font-size: 1.4rem;
  font-weight: 600;
  text-align: center;
  margin: 1.5rem 0 0.5rem;
}

#outputHeading {
  display: none;
}




@media (prefers-color-scheme: dark) {
  body {
    background: linear-gradient(135deg, #1e1e2f, #121218);
    color: #eee;
  }

  .glass-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
  }

  .floating-header {
    background: rgba(0, 0, 0, 0.4);
    color: #f0f0f0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.6);
  }

  textarea {
    width: 100%;
    max-width: 100%;
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 10px rgba(0, 123, 255, 0.3), 0 0 20px rgba(0, 123, 255, 0.2), inset 0 1px 4px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(6px);
    display: block;
    margin: 0 auto;
    transition: box-shadow 0.3s ease, transform 0.2s ease;
  }

  button {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(0, 123, 255, 0.6);
  }

  button:hover {
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 15px rgba(0, 123, 255, 0.6), 0 0 25px rgba(0, 123, 255, 0.4);
  }

  #loadingIndicator {
    color: #aaa;
    margin-top: 1rem;
  }

  #output,
  #output.active {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #eee;
    margin-top: 1rem;
    margin-bottom: 2rem;
    padding: 1.75rem;
    border-radius: 16px;
    box-shadow: 0 0 18px rgba(0, 123, 255, 0.3);
    display: block;
    text-align: left;
    white-space: pre-wrap;
    word-break: break-word;
    box-sizing: border-box;
    font-size: 1rem;
    line-height: 1.6;
    transition: all 0.3s ease;
  }
}

.about {
  opacity: 0;
  transform: translateY(20px);
  width: 100%;
  max-width: 600px;
  margin: 0 auto 4rem;
  padding: 1.5rem 2rem;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: #333;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  animation: fadeIn 0.8s ease forwards;
  text-align: left;
  transition: all 0.6s ease;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.about.active {
  opacity: 1;
  transform: translateY(0);
}

.about h2 {
  margin-bottom: 1rem;
  font-size: 1.4rem;
  font-weight: 600;
}

.about p {
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.about ul {
  list-style: none;
  padding-left: 0;
}

.about li {
  margin: 0.75rem 0;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.about li::before {
  content: attr(data-icon);
  font-size: 1.2rem;
  display: inline-block;
  transition: transform 0.3s ease, filter 0.3s ease;
}

.about li:hover::before {
  transform: scale(1.2);
  filter: drop-shadow(0 0 6px rgba(0, 123, 255, 0.6));
}

@media (prefers-color-scheme: dark) {
  .about {
    background: rgba(255, 255, 255, 0.05);
    color: #eee;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }
}

footer {
  width: 100%;
  text-align: center;
  padding: 1rem 0;
  font-size: 0.9rem;
  color: #666;
}

/* Accessibility mode: Footer styles */
body.accessibility-mode footer {
  color: #fff !important;
  background-color: #000 !important;
}

.glass-columns {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: flex-start;
  gap: 2rem;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto 2rem; /* No top margin, only bottom */
  box-sizing: border-box;
}

.input-panel,
.output-panel {
  flex: 1 1 0;
  min-width: 0;
  max-width: 520px;
  background: rgba(0, 0, 0, 0.65);
  border-radius: 16px;
  padding: 2rem;
  color: #fff;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 1.25rem;
  align-items: center; /* Center content horizontally */
}

.output-panel {
  gap: 0.75rem;
}

.input-panel h2,
.output-panel h2 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  font-weight: 600;
  text-align: left;
  color: #f0f0f0;
}

#outputAlt {
  margin-top: 0.25rem;
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  box-shadow: 0 0 10px rgba(0, 123, 255, 0.3);
  color: #fff;
  width: 100%;
  box-sizing: border-box;
  font-size: 1rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  display: none;
}

/* Responsive: stack on mobile */
@media (max-width: 1024px) {
  .glass-columns {
    flex-wrap: wrap;
    flex-direction: column;
    align-items: center;
  }
  .input-panel,
  .output-panel {
    max-width: 90%;
    width: 100%;
  }
}

@media (max-width: 1100px) {
  .glass-columns {
    max-width: 98vw;
    gap: 1rem;
  }
  .input-panel,
  .output-panel {
    max-width: 98vw;
    min-width: 0;
    padding: 1.2rem;
  }
}

@media (max-width: 900px) {
  .glass-columns {
    flex-direction: column;
    align-items: center;
    gap: 2rem;
  }
  .input-panel,
  .output-panel {
    max-width: 98vw;
    width: 100%;
    margin: 0 auto;
  }
}
.buttons button i {
  margin-right: 0.5rem;
  transition: transform 0.3s ease, text-shadow 0.3s ease;
  font-size: 1.1rem;
}

.buttons button:hover i {
  transform: scale(1.2);
  /* Vibrant purple-blue glow */
  text-shadow: 0 0 14px #7c3cff, 0 0 24px #00bfff, 0 0 32px #7c3cff;
}

button::before {
  content: "";
  position: absolute;
  border-radius: 50%;
  width: 100px;
  height: 100px;
  background: rgba(0, 123, 255, 0.3);
  transform: scale(0);
  opacity: 0;
  pointer-events: none;
  animation: ripple 0.6s ease-out;
  z-index: -1;
}

@keyframes ripple {
  to {
    transform: scale(3);
    opacity: 0;
  }
}

button:active::before {
  animation: ripple 0.6s ease-out;
}

/* Accessible loading indicator styles (light mode only) */
#loadingIndicator {
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  margin-top: 1rem;
  color: #222;
  text-shadow: 0 0 6px rgba(255, 255, 255, 0.9), 0 0 10px rgba(0, 123, 255, 0.3);
}

/* Dark mode adjustments */
@media (prefers-color-scheme: dark) {
  #loadingIndicator {
    color: #eee;
    text-shadow: 0 0 6px rgba(0, 123, 255, 0.6); /* Cool blue glow for contrast */
  }
}

/* Enhanced button text readability */
button {
  color: #111;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.4px;
}

@media (prefers-color-scheme: dark) {
  button {
    color: #fff;
  }
}
/* Floating Tab Bar Styles */
.floating-tab-bar {
  /* position: fixed; */
  /* bottom: 2rem; */
  /* left: 50%; */
  /* transform: translateX(-50%); */
  transform-style: preserve-3d;
  perspective: 1000px;
  transform: translateZ(0);
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.12);
  box-shadow: 
    0 8px 20px rgba(0, 123, 255, 0.35),
    0 0 24px rgba(0, 123, 255, 0.2),
    inset 0 0 12px rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px) saturate(1.3);
  -webkit-backdrop-filter: blur(16px) saturate(1.3);
  border: 1.5px solid rgba(0, 123, 255, 0.4);
  /* z-index: 1000; */
  margin-top: 0.25rem;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 0.6rem 1.5rem;
  width: fit-content;
  max-width: 100%;
  align-items: center;
}

.floating-tab-bar button {
  background: transparent;
  border: none;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0.65rem 1.25rem;
  border-radius: 24px;
  min-width: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-align: center;
  color: #222;
  transform: translateZ(0);
  will-change: transform;
}

.floating-tab-bar button:hover {
  background: rgba(0, 123, 255, 0.12);
  color: #007bff;
  box-shadow: 
    0 0 10px rgba(0, 123, 255, 0.3), 
    0 0 16px rgba(124, 60, 255, 0.25),
    inset 0 0 4px rgba(255, 255, 255, 0.08);
  transform: translateY(-2px) scale(1.05);
}

.floating-tab-bar button:active {
  transform: scale(0.96) translateY(1px);
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

.floating-tab-bar button i {
  font-size: 1.1rem;
  margin-right: 0.4rem;
  vertical-align: middle;
  transition: text-shadow 0.3s ease;
}

.floating-tab-bar button:hover i {
  text-shadow: 0 0 10px rgba(0, 123, 255, 0.4), 0 0 16px rgba(124, 60, 255, 0.3);
}

@media (prefers-color-scheme: dark) {
  .floating-tab-bar {
    transform-style: preserve-3d;
    perspective: 1000px;
    transform: translateZ(0);
    border-radius: 32px;
    background: rgba(255, 255, 255, 0.10);
    box-shadow: 
      0 8px 20px rgba(0, 123, 255, 0.35),
      0 0 24px rgba(0, 123, 255, 0.25),
      inset 0 0 12px rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(16px) saturate(1.3);
    -webkit-backdrop-filter: blur(16px) saturate(1.3);
    border: 1.5px solid rgba(0, 123, 255, 0.4);
  }

  .floating-tab-bar button {
    color: #eee;
  }

  .floating-tab-bar button:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #00bfff;
    box-shadow: 
      0 0 10px rgba(0, 123, 255, 0.4), 
      0 0 20px rgba(124, 60, 255, 0.3),
      inset 0 0 6px rgba(255, 255, 255, 0.1);
  }

  .floating-tab-bar button:hover i {
    text-shadow: 0 0 10px rgba(0, 123, 255, 0.5), 0 0 16px rgba(124, 60, 255, 0.4);
  }
}
/* --- Enhanced Floating Header Glow --- */
.floating-header::after {
  content: '';
  display: block;
  height: 3px;
  background: linear-gradient(to right, #00bfff, #7c3cff);
  opacity: 0.6;
  border-radius: 4px;
  margin-top: 6px;
}

/* --- Improved Keyboard Accessibility --- */
:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px #00bfff66, 0 0 10px #7c3cff88;
  transition: box-shadow 0.3s ease-in-out;
  border-radius: 8px;
}

/* --- Enhanced 3D Glass Feel --- */
.glass-card,
.input-panel,
.output-panel {
  transform-style: preserve-3d;
  perspective: 1000px;
  transform: translateZ(0);
}
/* Tooltip styles */
/* --- Futuristic Glass Tooltip Styles --- */
/* --- Smart Tooltip Behavior --- */
.tooltip {
  position: absolute;
  background: rgba(255,255,255,0.15);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: 12px;
  font-size: 0.85rem;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 10000;
  backdrop-filter: blur(6px);
  box-shadow: 0 4px 12px rgba(0,123,255,0.2);
  animation: floatTooltip 5s ease-in-out infinite;
  transition-delay: 0.4s;
}

.tooltip-visible {
  opacity: 1;
  transform: translateY(-6px);
  pointer-events: auto;
  transition-delay: 0s;
}

@keyframes floatTooltip {
  0%, 100% {
    transform: translateY(-6px);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* HUD notification styles */
/* --- Enhanced HUD Notification Layout --- */
.hud-notify {
  position: fixed;
  top: auto;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 90vw;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(12px);
  padding: 0.75rem 1.25rem;
  color: #fff;
  font-weight: 600;
  border-radius: 12px;
  box-shadow: 0 0 12px rgba(0,123,255,0.3);
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  z-index: 10000;
}

.hud-notify.show {
  opacity: 1;
  transform: translateY(0);
}

/* Custom glass toggle switch base style */
.glass-toggle {
  position: relative;
  display: inline-block;
  width: 52px;
  height: 28px;
}

.glass-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.glass-toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255,255,255,0.15);
  transition: .4s;
  border-radius: 34px;
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.2);
}

.glass-toggle-slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 4px;
  bottom: 4px;
  background-color: #00bfff;
  transition: .4s;
  border-radius: 50%;
  box-shadow: 0 0 6px rgba(0,123,255,0.4);
}

.glass-toggle input:checked + .glass-toggle-slider {
  background-color: rgba(0,123,255,0.3);
}

.glass-toggle input:checked + .glass-toggle-slider:before {
  transform: translateX(24px);
}

/* :focus-visible for floating tab bar buttons for keyboard navigation */
.floating-tab-bar button:focus-visible {
  outline: 2px solid #00bfff;
  outline-offset: 3px;
}

/* --- Accessibility Mode Toggle Styles --- */
.accessibility-toggle {
  position: fixed;
  top: calc(env(safe-area-inset-top, 0px) + 0.9rem);
  right: calc(env(safe-area-inset-right, 0px) + 1rem);
  bottom: auto;
  left: auto;
  z-index: 10000;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 40px;
  max-width: none;
  padding: 0.25rem 0.45rem 0.25rem 0.25rem;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  background: rgba(8, 10, 16, 0.78);
  color: #fff;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.16);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  cursor: pointer;
  user-select: none;
  font: inherit;
  text-align: left;
}

.accessibility-toggle:hover {
  border-color: rgba(0, 191, 255, 0.65);
  background: rgba(12, 14, 22, 0.9);
}

.accessibility-toggle:focus-visible {
  outline: 3px solid #ffd400;
  outline-offset: 3px;
  border-color: #00bfff;
}

.accessibility-toggle__icon {
  background-image: url('web.png');
  background-repeat: no-repeat;
  background-size: 70% 70%;
  background-position: center;
  display: inline-flex;
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background-color: #fff;
  border: 1.5px solid #00bfff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.12);
}

.accessibility-toggle__text {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.45rem;
  line-height: 1.1;
  min-width: 0;
}

.accessibility-toggle__label {
  font-size: 0.78rem;
  font-weight: 700;
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.accessibility-toggle__state {
  font-size: 0;
  width: 0.5rem;
  height: 0.5rem;
  flex: 0 0 auto;
  color: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  padding: 0;
  line-height: 0;
  background: #6f7785;
}

body.accessibility-mode .accessibility-toggle {
  background: #000 !important;
  color: #fff !important;
  border-color: #ffd400 !important;
  box-shadow: 0 0 0 2px rgba(255, 212, 0, 0.35) !important;
}

body.accessibility-mode .accessibility-toggle__state {
  border-color: #ffd400 !important;
  background: #ffd400 !important;
}

@media (max-width: 900px) {
  .accessibility-toggle {
    top: auto;
    right: calc(env(safe-area-inset-right, 0px) + 0.75rem);
    bottom: calc(env(safe-area-inset-bottom, 0px) + 0.75rem);
    left: auto;
  }
}
/* --- Accessibility Mode Styles --- */
body.accessibility-mode {
  font-size: 1.25rem;
  line-height: 1.9;
  letter-spacing: 0.02em;
  background-color: #000 !important;
  color: #fff !important;
  text-shadow: none !important;
}

body.accessibility-mode,
body.accessibility-mode * {
  animation: none !important;
  transition: none !important;
  scroll-behavior: auto !important;
}

/* Panels rely on fade-in animation for visibility; force visible states when motion is disabled. */
body.accessibility-mode .input-panel,
body.accessibility-mode .output-panel,
body.accessibility-mode .about,
body.accessibility-mode .reveal {
  opacity: 1 !important;
  transform: none !important;
}

body.accessibility-mode .output-panel,
body.accessibility-mode .input-panel,
body.accessibility-mode .about,
body.accessibility-mode .floating-header,
body.accessibility-mode textarea,
body.accessibility-mode button,
body.accessibility-mode #output {
  background-color: #000 !important;
  color: #fff !important;
  border: 2px solid #ffd400 !important;
  box-shadow: none !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

body.accessibility-mode button {
  font-size: 1.05em;
  font-weight: bold;
  text-transform: none;
  letter-spacing: normal;
  min-height: 48px;
}

body.accessibility-mode a {
  color: #7fdcff;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

body.accessibility-mode label,
body.accessibility-mode h1,
body.accessibility-mode h2,
body.accessibility-mode p,
body.accessibility-mode li,
body.accessibility-mode footer,
body.accessibility-mode .output-group,
body.accessibility-mode .output-group h2,
body.accessibility-mode #output,
body.accessibility-mode #output.active,
body.accessibility-mode .about {
  color: #fff !important;
}

body.accessibility-mode ::placeholder {
  color: #ddd !important;
  opacity: 1;
}

body.accessibility-mode a:focus-visible,
body.accessibility-mode button:focus-visible,
body.accessibility-mode textarea:focus-visible,
body.accessibility-mode [tabindex]:focus-visible {
  outline: 3px solid #ffd400 !important;
  outline-offset: 3px;
}

body.accessibility-mode .floating-tab-bar button {
  background-color: #111 !important;
  color: #fff !important;
  border: 2px solid #ffd400 !important;
}

body.accessibility-mode .floating-tab-bar button:hover {
  background-color: #222 !important;
  color: #ffd400 !important;
  box-shadow: none !important;
}

body.accessibility-mode .tooltip {
  display: none !important;
}
/* --- Subtle Floating Animation for All Buttons --- */
button {
  animation: floatUpDown 6s ease-in-out infinite;
}

@keyframes floatUpDown {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-2px);
  }
}
/* --- Output hover effect --- */
#output:hover {
  box-shadow: 0 0 28px rgba(0,123,255,0.4);
  transform: scale(1.01);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

/* --- GlowOnce animation for floating-tab-bar button hover --- */
@keyframes glowOnce {
  0% {
    box-shadow: 0 0 0px rgba(0,123,255,0.3);
  }
  50% {
    box-shadow: 0 0 14px rgba(0,123,255,0.5);
  }
  100% {
    box-shadow: 0 0 0px rgba(0,123,255,0.3);
  }
}

.floating-tab-bar button:hover {
  animation: glowOnce 0.6s ease-in-out;
}

/* --- Pulsing Glow Effect for Output Panel --- */
#output.active {
  animation: pulseGlow 3s infinite ease-in-out;
  /* Enhanced pulsing glow: smooth color pulse and increased shadow range */
  box-shadow: 0 0 18px rgba(0,123,255,0.4), 0 0 6px rgba(124,60,255,0.18);
}

@keyframes pulseGlow {
  0% {
    box-shadow: 0 0 14px rgba(0,123,255,0.3), 0 0 0px rgba(124,60,255,0.2);
  }
  50% {
    box-shadow: 0 0 28px rgba(0,123,255,0.6), 0 0 12px rgba(124,60,255,0.3);
  }
  100% {
    box-shadow: 0 0 14px rgba(0,123,255,0.3), 0 0 0px rgba(124,60,255,0.2);
  }
}

/* --- Modern Glass Scrollbar Styles --- */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(6px);
}

::-webkit-scrollbar-thumb {
  background: rgba(0, 123, 255, 0.4);
  border-radius: 10px;
  border: 2px solid transparent;
  background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 123, 255, 0.6);
}
/* --- Reduced motion accessibility --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }

  .input-panel,
  .output-panel,
  .about,
  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}
/* --- Button Tap Ripple & Bounce Animation --- */
button:active {
  animation: buttonBounce 0.25s ease-in-out;
}

@keyframes buttonBounce {
  0% { transform: scale(1); }
  50% { transform: scale(0.95); }
  100% { transform: scale(1); }
}

/* --- Responsive Glass Panel Scroll Reveal --- */
.reveal {
  opacity: 0;
  transform: scale(0.97) translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: scale(1) translateY(0);
}

/* ✨ Glass Shine Animation */
@keyframes glassShineSweep {
  0% {
    background-position: -100%;
  }
  100% {
    background-position: 200%;
  }
}

.glass-shine {
  position: relative;
  overflow: hidden;
}

.glass-shine::before {
  content: '';
  position: absolute;
  top: 0;
  left: -75%;
  width: 50%;
  height: 100%;
  background: linear-gradient(
    120deg,
    rgba(255, 255, 255, 0.05) 0%,
    rgba(255, 255, 255, 0.2) 60%,
    rgba(255, 255, 255, 0.05) 100%
  );
  transform: skewX(-25deg);
  animation: glassShineSweep 2.5s infinite linear;
  pointer-events: none;
}
.glass-card::after {
  background: radial-gradient(circle at 40% 30%, rgba(255,255,255,0.08), transparent);
  mix-blend-mode: overlay;
  opacity: 0.5;
}
/* --- Responsive Layout for Tablets and Smartphones --- */

/* --- Mobile Fixes for Small Screens (≤ 480px) --- */

/* Prevent horizontal overflow */
html, body {
  width: 100%;
  overflow-x: hidden;
}
/* --- Fluid Glass Base --- */
.fluid-glass {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2rem;
  backdrop-filter: blur(24px) saturate(1.5);
  -webkit-backdrop-filter: blur(24px) saturate(1.5);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow:
    inset 0 0 0.5px rgba(255, 255, 255, 0.6),
    0 8px 32px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
}

/* --- Icon Bubble Button --- */
.glass-button {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(20px);
  border: 2px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  color: #fff;
  font-size: 1.4rem;
}

.glass-button:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.05);
}

/* --- Media Control Glass Widget --- */
.media-glass-widget {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1rem 1.75rem;
  border-radius: 2rem;
  background: linear-gradient(to right, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1.5px solid rgba(255,255,255,0.25);
  box-shadow: 0 12px 40px rgba(0,0,0,0.25);
  color: #fff;
}

.media-glass-widget img {
  width: 48px;
  height: 48px;
  border-radius: 1rem;
}

.media-glass-widget .song-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.media-glass-widget .song-info h4 {
  font-size: 1rem;
  margin: 0;
}

.media-glass-widget .song-info p {
  font-size: 0.875rem;
  color: #ccc;
  margin: 0;
}

/* --- Color Scheme: Light, Dark, Accessibility order --- */

@media (prefers-color-scheme: light) {
  body {
    color: #000;
  }
  .floating-header,
  .glass-card,
  .input-panel,
  .output-panel,
  textarea,
  .about,
  .output-group,
  .output-group h2,
  #output,
  #output.active,
  #outputHeading {
    color: #000;
  }
  .about,
  .about h2,
  .about p,
  .about li {
    color: #000;
  }
  button {
    color: #000;
  }
  #loadingIndicator {
    color: #666;
  }
  footer {
    color: #000;
  }
}

@media (prefers-color-scheme: dark) {
  body {
    color: #eee;
  }
  .floating-header,
  .glass-card,
  .input-panel,
  .output-panel,
  textarea,
  .about,
  .output-group,
  .output-group h2,
  #output,
  #output.active,
  #outputHeading {
    color: #fff;
  }
  .about,
  .about h2,
  .about p,
  .about li {
    color: #fff;
  }
  footer {
    color: #eee;
  }
}

body.accessibility-mode .output-group,
body.accessibility-mode .output-group h2,
body.accessibility-mode #output,
body.accessibility-mode #output.active,
body.accessibility-mode #outputHeading,
body.accessibility-mode .about {
  color: #fff !important;
}

/* --- Accessibility Mode Final Overrides (last layer) --- */
body.accessibility-mode {
  background: #000 !important;
  color: #fff !important;
}

body.accessibility-mode::before {
  content: none !important;
  display: none !important;
  background: none !important;
  filter: none !important;
}

body.accessibility-mode .floating-header {
  background: #000 !important;
  color: #fff !important;
  border: 0 !important;
  border-bottom: 2px solid #6f6f6f !important;
  box-shadow: none !important;
  border-radius: 0 !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

body.accessibility-mode .floating-header::after,
body.accessibility-mode .input-panel::before,
body.accessibility-mode .input-panel::after,
body.accessibility-mode .output-panel::before,
body.accessibility-mode .output-panel::after,
body.accessibility-mode .glass-card::before,
body.accessibility-mode .glass-card::after,
body.accessibility-mode .glass-shine::before {
  content: none !important;
  display: none !important;
}

body.accessibility-mode .floating-header .fluid-glass,
body.accessibility-mode .brand-title {
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

body.accessibility-mode .glass-columns,
body.accessibility-mode main {
  background: transparent !important;
}

body.accessibility-mode .input-panel,
body.accessibility-mode .output-panel,
body.accessibility-mode .about,
body.accessibility-mode .floating-tab-bar,
body.accessibility-mode textarea,
body.accessibility-mode #output,
body.accessibility-mode #output.active {
  background: #0b0b0b !important;
  background-image: none !important;
  color: #fff !important;
  border: 2px solid #707070 !important;
  box-shadow: none !important;
  text-shadow: none !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

body.accessibility-mode textarea::placeholder {
  color: #d9d9d9 !important;
}

body.accessibility-mode .floating-tab-bar button,
body.accessibility-mode button:not(.accessibility-toggle) {
  background: #151515 !important;
  background-image: none !important;
  color: #fff !important;
  border: 2px solid #8a8a8a !important;
  box-shadow: none !important;
  text-shadow: none !important;
  transform: none !important;
  filter: none !important;
}

body.accessibility-mode .floating-tab-bar button::before,
body.accessibility-mode .floating-tab-bar button::after,
body.accessibility-mode button:not(.accessibility-toggle)::before,
body.accessibility-mode button:not(.accessibility-toggle)::after {
  content: none !important;
  display: none !important;
  animation: none !important;
  filter: none !important;
  box-shadow: none !important;
}

body.accessibility-mode .floating-tab-bar button:hover,
body.accessibility-mode button:not(.accessibility-toggle):hover {
  background: #1f1f1f !important;
  color: #fff !important;
  border-color: #ffd400 !important;
  box-shadow: none !important;
  transform: none !important;
}

body.accessibility-mode .floating-tab-bar button:active,
body.accessibility-mode button:not(.accessibility-toggle):active {
  transform: none !important;
}

body.accessibility-mode button i,
body.accessibility-mode button span,
body.accessibility-mode button sup {
  color: inherit !important;
  text-shadow: none !important;
  filter: none !important;
}

body.accessibility-mode .definition-output {
  background: #111 !important;
  border: 1px solid #6f6f6f !important;
  color: #fff !important;
}

body.accessibility-mode a {
  color: #9adfff !important;
  text-decoration-thickness: 2px;
}

body.accessibility-mode :focus-visible {
  outline: 3px solid #ffd400 !important;
  outline-offset: 3px !important;
  box-shadow: none !important;
}

body.accessibility-mode .accessibility-toggle {
  background: #151515 !important;
  background-image: none !important;
  color: #fff !important;
  border: 2px solid #8a8a8a !important;
  box-shadow: none !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  text-shadow: none !important;
  transform: none !important;
  filter: none !important;
}

body.accessibility-mode .accessibility-toggle:hover {
  border-color: #ffd400 !important;
  background: #1f1f1f !important;
}

body.accessibility-mode .accessibility-toggle[aria-pressed="true"] {
  border-color: #8a8a8a !important;
}

body.accessibility-mode .accessibility-toggle::before,
body.accessibility-mode .accessibility-toggle::after {
  content: none !important;
  display: none !important;
  animation: none !important;
  background: none !important;
  filter: none !important;
  box-shadow: none !important;
}

body.accessibility-mode .accessibility-toggle:active {
  transform: none !important;
}

body.accessibility-mode .accessibility-toggle__icon {
  background-color: #fff !important;
  border-color: #8a8a8a !important;
}

body.accessibility-mode .accessibility-toggle[aria-pressed="true"] .accessibility-toggle__icon {
  border-color: #8a8a8a !important;
}

body.accessibility-mode .accessibility-toggle__label {
  color: #fff !important;
}

body.accessibility-mode .accessibility-toggle__state {
  color: transparent !important;
  background: #666 !important;
  border-color: #8a8a8a !important;
}

body.accessibility-mode .accessibility-toggle[aria-pressed="true"] .accessibility-toggle__state {
  color: transparent !important;
  border-color: #ffd400 !important;
  background: #ffd400 !important;
}

/* --- Midnight Metal Redesign (default mode only) --- */
@keyframes metalFlow {
  0% {
    background-position: 0% 0%, 100% 0%, 50% 100%, 50% 50%;
  }
  100% {
    background-position: 8% 4%, 92% 8%, 50% 92%, 48% 52%;
  }
}

body:not(.accessibility-mode) {
  --metal-bg-0: #05070b;
  --metal-bg-1: #0b0f15;
  --metal-bg-2: #141a24;
  --metal-obsidian: #0c1118;
  --metal-midnight: #111826;
  --metal-space-grey: #4d5968;
  --metal-titanium: #aeb9c6;
  --metal-silver: #dbe4ee;
  --metal-surface-0: #10151d;
  --metal-surface-1: #1a212c;
  --metal-surface-2: #242d38;
  --metal-line: rgba(210, 220, 232, 0.18);
  --metal-line-soft: rgba(255, 255, 255, 0.08);
  --metal-text: #edf2fb;
  --metal-muted: #aab5c4;
  --metal-accent: #7ad7ff;
  --metal-accent-2: #8aa0ff;
  --metal-radius-panel: 1.75rem;
  --metal-radius-card: 1.2rem;
  --metal-radius-logo: 1.6rem;
  --metal-radius-control: 0.95rem;
  background:
    radial-gradient(900px 420px at 18% 10%, rgba(150, 168, 195, 0.15), transparent 60%),
    radial-gradient(900px 520px at 82% 12%, rgba(185, 195, 210, 0.12), transparent 65%),
    radial-gradient(1100px 680px at 50% 120%, rgba(108, 127, 153, 0.09), transparent 70%),
    linear-gradient(180deg, #0a1018 0%, #0b1119 45%, #070b11 100%) !important;
  color: var(--metal-text) !important;
}

body:not(.accessibility-mode)::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(60% 45% at 25% 15%, rgba(255, 255, 255, 0.05), transparent 70%),
    radial-gradient(55% 40% at 75% 18%, rgba(122, 215, 255, 0.05), transparent 75%),
    radial-gradient(70% 60% at 50% 120%, rgba(180, 190, 205, 0.03), transparent 72%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0));
  filter: none !important;
  animation: metalFlow 28s ease-in-out infinite alternate;
}

body:not(.accessibility-mode) {
  text-shadow: none;
}

body:not(.accessibility-mode) main {
  max-width: 1320px;
  padding: 9.9rem 1.25rem 2.5rem !important;
  gap: 1.6rem;
}

body:not(.accessibility-mode) .glass-columns {
  max-width: 1260px;
  gap: 1.35rem;
  align-items: stretch;
  margin-top: 0.6rem;
}

body:not(.accessibility-mode) .floating-header {
  background: linear-gradient(
    180deg,
    rgba(40, 48, 61, 0.86) 0%,
    rgba(20, 26, 35, 0.93) 52%,
    rgba(13, 17, 24, 0.95) 100%
  ) !important;
  border: 1px solid rgba(219, 227, 237, 0.1) !important;
  border-top: 0 !important;
  border-bottom: 0 !important;
  border-radius: 0 0 14px 14px !important;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    0 16px 28px -18px rgba(0, 0, 0, 0.42) !important;
  backdrop-filter: blur(10px) saturate(1.05) !important;
  -webkit-backdrop-filter: blur(10px) saturate(1.05) !important;
  color: var(--metal-text) !important;
  padding: 0.8rem 1.25rem 0.8rem !important;
}

body:not(.accessibility-mode) .floating-header::after {
  display: block;
  width: min(42rem, 62vw);
  height: 2px;
  margin-top: 0.75rem;
  margin-left: auto;
  margin-right: auto;
  opacity: 0.65;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    rgba(176, 188, 205, 0) 0%,
    rgba(176, 188, 205, 0.18) 14%,
    rgba(221, 229, 238, 0.55) 36%,
    rgba(188, 198, 213, 0.35) 54%,
    rgba(122, 215, 255, 0.45) 78%,
    rgba(122, 215, 255, 0.18) 90%,
    rgba(176, 188, 205, 0) 100%
  ) !important;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.02),
    0 0 14px rgba(122, 215, 255, 0.08);
}

body:not(.accessibility-mode) .brand-title {
  padding: 0.55rem 1rem !important;
  gap: 0.6rem;
  border-radius: var(--metal-radius-logo) !important;
  background:
    radial-gradient(100% 120% at 15% 0%, rgba(255, 255, 255, 0.2), transparent 58%),
    radial-gradient(120% 140% at 100% 100%, rgba(122, 215, 255, 0.06), transparent 68%),
    linear-gradient(160deg, rgba(67, 76, 91, 0.9), rgba(31, 38, 49, 0.94) 62%, rgba(18, 23, 31, 0.97)) !important;
  border: 1px solid rgba(227, 233, 241, 0.2) !important;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    inset 0 -1px 0 rgba(255, 255, 255, 0.03),
    0 12px 20px rgba(0, 0, 0, 0.24) !important;
  color: var(--metal-text) !important;
}

body:not(.accessibility-mode) .brand-logo {
  border-radius: 999px;
  border: 2px solid rgba(226, 232, 241, 0.8);
  box-shadow:
    0 0 0 3px rgba(122, 215, 255, 0.1),
    0 6px 12px rgba(0, 0, 0, 0.22);
}

body:not(.accessibility-mode) .brand-name-light {
  color: rgba(237, 242, 251, 0.9);
}

body:not(.accessibility-mode) .input-panel::before,
body:not(.accessibility-mode) .input-panel::after,
body:not(.accessibility-mode) .output-panel::before,
body:not(.accessibility-mode) .output-panel::after,
body:not(.accessibility-mode) .glass-card::before,
body:not(.accessibility-mode) .glass-card::after,
body:not(.accessibility-mode) .glass-shine::before {
  content: none !important;
  display: none !important;
}

body:not(.accessibility-mode) .input-panel,
body:not(.accessibility-mode) .output-panel,
body:not(.accessibility-mode) .about {
  border-radius: var(--metal-radius-panel) !important;
  background:
    radial-gradient(120% 90% at 12% 0%, rgba(255, 255, 255, 0.13), transparent 55%),
    radial-gradient(110% 90% at 100% 100%, rgba(122, 215, 255, 0.05), transparent 60%),
    linear-gradient(165deg, rgba(68, 78, 94, 0.86) 0%, rgba(39, 47, 58, 0.92) 54%, rgba(23, 28, 37, 0.96) 100%) !important;
  border: 1px solid rgba(222, 229, 238, 0.24) !important;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.16),
    inset 0 -1px 0 rgba(255, 255, 255, 0.04),
    0 16px 28px rgba(0, 0, 0, 0.22),
    0 2px 10px rgba(122, 215, 255, 0.04) !important;
  color: var(--metal-text) !important;
  backdrop-filter: blur(14px) saturate(1.05) !important;
  -webkit-backdrop-filter: blur(14px) saturate(1.05) !important;
}

body:not(.accessibility-mode) .input-panel,
body:not(.accessibility-mode) .output-panel {
  padding: 2rem 1.6rem 1.6rem !important;
}

body:not(.accessibility-mode) .about {
  width: min(1100px, calc(100% - 2rem));
  margin-top: 0.25rem;
  padding: 1.4rem 1.5rem !important;
}

body:not(.accessibility-mode) .about h2,
body:not(.accessibility-mode) .output-group h2,
body:not(.accessibility-mode) .input-group label {
  color: #f2f6fd !important;
  text-shadow: none !important;
  letter-spacing: 0.01em;
}

body:not(.accessibility-mode) .about p,
body:not(.accessibility-mode) .about li {
  color: var(--metal-muted) !important;
}

body:not(.accessibility-mode) textarea,
body:not(.accessibility-mode) #output,
body:not(.accessibility-mode) #output.active {
  background:
    radial-gradient(120% 100% at 10% 0%, rgba(255, 255, 255, 0.05), transparent 55%),
    linear-gradient(180deg, rgba(22, 28, 37, 0.95), rgba(14, 18, 25, 0.98)) !important;
  border: 1px solid rgba(205, 215, 228, 0.26) !important;
  border-radius: var(--metal-radius-card) !important;
  color: var(--metal-text) !important;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    inset 0 0 0 1px rgba(255, 255, 255, 0.03),
    0 8px 14px rgba(0, 0, 0, 0.18) !important;
  text-shadow: none !important;
  backdrop-filter: blur(6px) saturate(1.02) !important;
  -webkit-backdrop-filter: blur(6px) saturate(1.02) !important;
}

body:not(.accessibility-mode) textarea::placeholder {
  color: rgba(191, 201, 214, 0.78) !important;
}

body:not(.accessibility-mode) #output {
  min-height: 4.2rem;
}

body:not(.accessibility-mode) #output.active {
  animation: none !important;
}

body:not(.accessibility-mode) #output:hover {
  transform: none !important;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    inset 0 0 0 1px rgba(255, 255, 255, 0.02),
    0 8px 18px rgba(0, 0, 0, 0.3) !important;
}

body:not(.accessibility-mode) textarea:focus-visible,
body:not(.accessibility-mode) #output:focus-visible {
  outline: 2px solid rgba(122, 215, 255, 0.75);
  outline-offset: 2px;
  border-color: rgba(122, 215, 255, 0.55) !important;
  box-shadow:
    0 0 0 4px rgba(122, 215, 255, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    inset 0 0 0 1px rgba(255, 255, 255, 0.02),
    0 8px 18px rgba(0, 0, 0, 0.3) !important;
}

body:not(.accessibility-mode) .floating-tab-bar {
  background:
    radial-gradient(130% 100% at 10% 0%, rgba(255, 255, 255, 0.12), transparent 60%),
    linear-gradient(160deg, rgba(61, 71, 86, 0.72), rgba(35, 42, 53, 0.84), rgba(22, 27, 35, 0.9)) !important;
  border: 1px solid rgba(220, 228, 238, 0.2) !important;
  border-radius: var(--metal-radius-card) !important;
  padding: 0.95rem !important;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    0 12px 20px rgba(0, 0, 0, 0.2) !important;
  gap: 0.75rem;
}

body:not(.accessibility-mode) button:not(.accessibility-toggle)::before,
body:not(.accessibility-mode) button:not(.accessibility-toggle)::after {
  content: none !important;
  display: none !important;
  animation: none !important;
}

body:not(.accessibility-mode) .floating-tab-bar button,
body:not(.accessibility-mode) button:not(.accessibility-toggle) {
  background:
    radial-gradient(120% 120% at 15% 0%, rgba(255, 255, 255, 0.16), transparent 55%),
    linear-gradient(180deg, rgba(63, 73, 88, 0.92) 0%, rgba(38, 45, 56, 0.95) 54%, rgba(24, 29, 38, 0.97) 100%) !important;
  border: 1px solid rgba(220, 228, 238, 0.24) !important;
  border-radius: var(--metal-radius-control) !important;
  color: var(--metal-text) !important;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.2),
    inset 0 -1px 0 rgba(255, 255, 255, 0.04),
    0 6px 12px rgba(0, 0, 0, 0.18) !important;
  text-shadow: none !important;
  backdrop-filter: blur(6px) !important;
  -webkit-backdrop-filter: blur(6px) !important;
  transform: translateY(0) !important;
}

body:not(.accessibility-mode) .floating-tab-bar button i,
body:not(.accessibility-mode) button:not(.accessibility-toggle) i {
  color: rgba(230, 237, 245, 0.95) !important;
  text-shadow: none !important;
}

body:not(.accessibility-mode) .floating-tab-bar button:hover,
body:not(.accessibility-mode) button:not(.accessibility-toggle):hover {
  background:
    radial-gradient(120% 120% at 15% 0%, rgba(255, 255, 255, 0.18), transparent 55%),
    linear-gradient(180deg, rgba(74, 84, 100, 0.95) 0%, rgba(43, 50, 62, 0.97) 54%, rgba(26, 31, 40, 0.99) 100%) !important;
  border-color: rgba(226, 233, 241, 0.34) !important;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.22),
    0 8px 14px rgba(0, 0, 0, 0.22),
    0 0 0 1px rgba(226, 233, 241, 0.06) !important;
  transform: translateY(-1px) !important;
  color: #f4f8ff !important;
}

body:not(.accessibility-mode) .floating-tab-bar button:active,
body:not(.accessibility-mode) button:not(.accessibility-toggle):active {
  transform: translateY(1px) !important;
  box-shadow:
    inset 0 2px 6px rgba(0, 0, 0, 0.22),
    0 4px 8px rgba(0, 0, 0, 0.24) !important;
}

body:not(.accessibility-mode) .floating-tab-bar button:focus-visible,
body:not(.accessibility-mode) button:not(.accessibility-toggle):focus-visible {
  outline: 2px solid rgba(190, 208, 228, 0.9);
  outline-offset: 2px;
  box-shadow:
    0 0 0 4px rgba(190, 208, 228, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 8px 14px rgba(0, 0, 0, 0.22) !important;
}

body:not(.accessibility-mode) .floating-tab-bar button span,
body:not(.accessibility-mode) .floating-tab-bar button sup {
  color: inherit !important;
}

body:not(.accessibility-mode) .definition-output {
  background: linear-gradient(180deg, rgba(21, 26, 34, 0.96), rgba(12, 16, 22, 0.98)) !important;
  border: 1px solid rgba(211, 221, 233, 0.12) !important;
  color: var(--metal-text) !important;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

body:not(.accessibility-mode) .tooltip {
  background: rgba(18, 22, 30, 0.96) !important;
  color: #e9eef6 !important;
  border: 1px solid rgba(210, 220, 232, 0.2);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.22);
}

body:not(.accessibility-mode) a {
  color: #9fdfff;
}

body:not(.accessibility-mode) footer {
  color: rgba(206, 216, 228, 0.75) !important;
  text-shadow: none !important;
}

body:not(.accessibility-mode) .accessibility-toggle {
  border-radius: var(--metal-radius-control) !important;
  background:
    radial-gradient(120% 120% at 15% 0%, rgba(255, 255, 255, 0.15), transparent 55%),
    linear-gradient(180deg, rgba(70, 80, 95, 0.88), rgba(38, 45, 56, 0.92) 58%, rgba(24, 29, 38, 0.95)) !important;
  border: 1px solid rgba(222, 229, 238, 0.24) !important;
  color: var(--metal-text) !important;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 8px 14px rgba(0, 0, 0, 0.18) !important;
  backdrop-filter: blur(10px) saturate(1.02) !important;
  -webkit-backdrop-filter: blur(10px) saturate(1.02) !important;
}

body:not(.accessibility-mode) .accessibility-toggle::before,
body:not(.accessibility-mode) .accessibility-toggle::after {
  content: none !important;
  display: none !important;
  animation: none !important;
  background: none !important;
  filter: none !important;
  box-shadow: none !important;
}

body:not(.accessibility-mode) .accessibility-toggle:hover {
  border-color: rgba(222, 229, 238, 0.34) !important;
  background:
    radial-gradient(120% 120% at 15% 0%, rgba(255, 255, 255, 0.18), transparent 55%),
    linear-gradient(180deg, rgba(79, 90, 107, 0.9), rgba(44, 52, 64, 0.94) 58%, rgba(27, 32, 41, 0.97)) !important;
}

body:not(.accessibility-mode) .accessibility-toggle__icon {
  background-color: #e4ebf3 !important;
  border-color: rgba(223, 230, 239, 0.45) !important;
}

body:not(.accessibility-mode) .accessibility-toggle__label {
  color: var(--metal-text) !important;
}

body:not(.accessibility-mode) .accessibility-toggle__state {
  background: rgba(220, 227, 237, 0.28) !important;
  border-color: rgba(220, 227, 237, 0.38) !important;
}

body:not(.accessibility-mode) .accessibility-toggle[aria-pressed="true"] {
  border-color: rgba(222, 229, 238, 0.34) !important;
}

body:not(.accessibility-mode) .accessibility-toggle[aria-pressed="true"] .accessibility-toggle__state {
  background: var(--metal-accent) !important;
  border-color: rgba(122, 215, 255, 0.8) !important;
  box-shadow: 0 0 0 1px rgba(122, 215, 255, 0.16) !important;
}

@media (max-width: 900px) {
  body:not(.accessibility-mode) main {
    padding-top: 9rem !important;
  }

  body:not(.accessibility-mode) .floating-header {
    padding: 0.7rem 0.9rem 0.75rem !important;
    border-radius: 0 0 12px 12px !important;
  }

  body:not(.accessibility-mode) .brand-title {
    padding: 0.5rem 0.8rem !important;
    border-radius: 1.3rem !important;
  }

  body:not(.accessibility-mode) .accessibility-toggle {
    box-shadow: 0 8px 14px rgba(0, 0, 0, 0.22) !important;
  }
}

/* --- Panel UI Refresh (Input / Output) --- */
.panel-head {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.panel-head label,
.panel-head h2 {
  margin: 0;
}

.panel-head-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.panel-metrics {
  font-size: 0.8rem;
  line-height: 1;
  white-space: nowrap;
  opacity: 0.9;
}

.panel-copy-btn {
  white-space: nowrap;
}

#output:empty::before {
  content: attr(data-empty);
  display: block;
  opacity: 0.75;
}

body:not(.accessibility-mode) .glass-columns {
  align-items: flex-start !important;
  gap: 1.1rem !important;
}

body:not(.accessibility-mode) .input-panel,
body:not(.accessibility-mode) .output-panel {
  flex: 1 1 370px !important;
  max-width: 600px !important;
  padding: 1.15rem 1.15rem 1rem !important;
  gap: 0.8rem !important;
}

body:not(.accessibility-mode) .input-group,
body:not(.accessibility-mode) .output-group {
  width: 100% !important;
  max-width: none !important;
  margin: 0 !important;
  align-items: stretch !important;
  gap: 0.75rem;
}

body:not(.accessibility-mode) .output-group {
  min-height: auto;
}

body:not(.accessibility-mode) .panel-head {
  padding: 0.1rem 0.05rem 0;
}

body:not(.accessibility-mode) .panel-head label,
body:not(.accessibility-mode) .panel-head h2 {
  font-size: 0.95rem !important;
  font-weight: 700 !important;
  letter-spacing: 0.03em !important;
  text-transform: uppercase;
}

body:not(.accessibility-mode) .panel-head h2 {
  font-size: 1rem !important;
}

body:not(.accessibility-mode) .panel-metrics {
  color: rgba(219, 227, 237, 0.78) !important;
  font-weight: 500;
  letter-spacing: 0.01em;
}

body:not(.accessibility-mode) .panel-copy-btn {
  padding: 0.35rem 0.7rem !important;
  min-height: 30px !important;
  font-size: 0.75rem !important;
  border-radius: 0.75rem !important;
  background:
    radial-gradient(120% 120% at 15% 0%, rgba(255, 255, 255, 0.16), transparent 55%),
    linear-gradient(180deg, rgba(73, 84, 101, 0.9), rgba(42, 50, 62, 0.95) 58%, rgba(25, 30, 39, 0.97)) !important;
  border: 1px solid rgba(222, 229, 238, 0.24) !important;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.16),
    0 4px 10px rgba(0, 0, 0, 0.14) !important;
}

body:not(.accessibility-mode) .panel-copy-btn:hover:not(:disabled) {
  border-color: rgba(222, 229, 238, 0.34) !important;
  transform: translateY(-1px) !important;
}

body:not(.accessibility-mode) .panel-copy-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none !important;
}

body:not(.accessibility-mode) textarea {
  height: clamp(180px, 24vh, 240px) !important;
  min-height: 180px !important;
  max-height: 320px !important;
  margin-bottom: 0 !important;
  padding: 1rem 1.05rem !important;
}

body:not(.accessibility-mode) #output,
body:not(.accessibility-mode) #output.active {
  min-height: clamp(120px, 14vh, 160px) !important;
  max-height: 340px;
  overflow: auto;
  margin-top: 0 !important;
  margin-bottom: 0.25rem !important;
  padding: 0.95rem 1rem !important;
  line-height: 1.55;
}

body:not(.accessibility-mode) #output:empty {
  display: flex;
  align-items: center;
}

body:not(.accessibility-mode) #output:empty::before {
  color: rgba(191, 201, 214, 0.66) !important;
  font-size: 0.95rem;
}

body:not(.accessibility-mode) #loadingIndicator {
  margin-top: 0 !important;
  min-height: 2rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  width: fit-content;
  max-width: 100%;
  padding: 0 0.15rem;
  text-align: left !important;
  color: rgba(191, 201, 214, 0.85) !important;
  opacity: 0;
  transform: translateY(-2px);
  transition: opacity 180ms ease, transform 180ms ease;
}

body:not(.accessibility-mode) #loadingIndicator.loading {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(203, 214, 229, 0.18);
  background:
    linear-gradient(180deg, rgba(62, 72, 87, 0.7), rgba(34, 41, 52, 0.82)),
    radial-gradient(120% 120% at 10% 0%, rgba(255, 255, 255, 0.12), transparent 55%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.14),
    0 6px 18px rgba(0, 0, 0, 0.18);
  opacity: 1;
  transform: translateY(0);
  position: relative;
  overflow: hidden;
}

body:not(.accessibility-mode) #loadingIndicator.loading::before {
  content: "";
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  border: 2px solid rgba(220, 228, 239, 0.32);
  border-top-color: rgba(221, 232, 245, 0.92);
  flex: 0 0 auto;
  animation: cta-loading-spin 0.9s linear infinite;
}

body:not(.accessibility-mode) #loadingIndicator.loading::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 20%, rgba(255, 255, 255, 0.08) 45%, transparent 70%);
  transform: translateX(-120%);
  animation: cta-loading-sheen 1.4s ease-in-out infinite;
  pointer-events: none;
}

body:not(.accessibility-mode) #loadingIndicator.loading {
  color: rgba(226, 234, 244, 0.94) !important;
  text-shadow: none !important;
}

body:not(.accessibility-mode) #speakBtn.is-speaking {
  border-color: rgba(196, 208, 222, 0.45) !important;
  background:
    radial-gradient(125% 140% at 10% -15%, rgba(255, 255, 255, 0.22), transparent 55%),
    linear-gradient(180deg, rgba(88, 101, 120, 0.92), rgba(52, 61, 76, 0.96) 58%, rgba(34, 40, 49, 0.98)) !important;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 8px 16px rgba(7, 11, 18, 0.28) !important;
}

body.accessibility-mode #loadingIndicator {
  min-height: 2rem;
}

body.accessibility-mode #loadingIndicator.loading {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.65rem;
  border: 2px solid #d9d9d9;
  border-radius: 999px;
  background: #111;
  color: #fff !important;
}

body.accessibility-mode #loadingIndicator.loading::before {
  content: "";
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  border: 2px solid #777;
  border-top-color: #fff;
  animation: cta-loading-spin 0.9s linear infinite;
}

@keyframes cta-loading-spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes cta-loading-sheen {
  0% {
    transform: translateX(-120%);
  }
  100% {
    transform: translateX(120%);
  }
}

body:not(.accessibility-mode) .floating-tab-bar {
  margin-top: 0.15rem;
  padding: 0.75rem !important;
  gap: 0.55rem !important;
}

body:not(.accessibility-mode) .floating-tab-bar button {
  min-height: 42px;
  padding: 0.6rem 0.85rem !important;
  font-size: 0.95rem !important;
}

@media (max-width: 1100px) {
  body:not(.accessibility-mode) .input-panel,
  body:not(.accessibility-mode) .output-panel {
    max-width: 100% !important;
  }
}

@media (max-width: 900px) {
  body:not(.accessibility-mode) .panel-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.4rem;
  }

  body:not(.accessibility-mode) .panel-head-actions {
    width: 100%;
    justify-content: space-between;
  }

  body:not(.accessibility-mode) textarea {
    height: 170px !important;
    min-height: 170px !important;
  }
}

body.accessibility-mode .panel-metrics {
  color: #ddd !important;
}

body.accessibility-mode .panel-copy-btn {
  min-height: 42px !important;
}