:root {
  --border-color: rgba(255, 255, 255, 0.08); /* Renamed to avoid conflict with existing --border-color */
  --card-element-bg: rgba(255, 255, 255, 0.1);
  --card-element-hover-bg: rgba(255, 255, 255, 0.2);
  --placeholder-color: #9ca3af; /* Muted gray for placeholders */
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 0 0 0; /* Tight spacing with fixed footer */
  min-height: 1400px; /* Ensure sufficient height for content */
}

/* Transitions for interactive elements */
button,
a,
input,
select,
textarea,
.card,
.toggle-switch-label,
.stop-word-badge,
.clear-button,
.output-clear-button,
.copy-button,
.custom-select,
.custom-select-option {
  transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out,
    background-color 0.2s ease-in-out, border-color 0.2s ease-in-out, color 0.2s ease-in-out,
    opacity 0.2s ease-in-out;
}

/* Layout & Container */
.container {
  width: 100%;
  max-width: 430px;
  padding: 0 20px 110px 20px; /* Account for fixed footer height */
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* Page Title */
.page-title {
  font-size: 26px;
  font-weight: 600;
  color: var(--text-primary); /* White labels */
  margin-bottom: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-title i {
  color: var(--purple); /* Accent color for icon */
}

/* Card Styling */
.card {
  background-color: var(--bg-secondary); /* Darker cards */
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3); /* Dark theme shadow */
  padding: 20px;
  border: 1px solid var(--border-color); /* Subtle border */
}

/* Specific margin for output card to create tight spacing */
.output-card {
  margin-bottom: 16px;
}

/* Labels */
.label {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary); /* White labels */
  margin-bottom: 8px;
  display: block;
}

/* Helper Text */
.helper-text {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-muted); /* Muted gray for helper text */
  line-height: 1.5;
  margin-top: 8px;
}

/* Input/Output Fields */
.text-input,
.text-area {
  width: 100%;
  padding: 16px;
  border: 1px solid var(--border-color); /* Subtle border */
  border-radius: 12px;
  font-family: 'Inter', sans-serif; /* Apply new font family */
  font-size: 17px;
  font-weight: 400;
  color: var(--text-primary); /* White text */
  background-color: var(--bg-secondary); /* Dark background for inputs */
}

.text-input {
  height: 52px;
}

.text-area {
  min-height: 140px;
  resize: vertical;
}

.text-input::placeholder,
.text-area::placeholder {
  color: var(--placeholder-color); /* Muted placeholder */
}

.text-input:focus,
.text-area:focus {
  outline: 2px solid var(--purple); /* Purple focus ring */
  outline-offset: 2px;
  border-color: transparent;
}

/* Output Field specific */
.output-field {
  background-color: var(--bg-primary); /* Darker background for read-only */
}

/* Input Container for positioning clear button */
.input-container {
  position: relative;
}

/* Clear button in textarea */
.clear-button {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background-color: var(--card-element-bg); /* Lighter dark for button */
  border: none;
  color: var(--text-primary); /* White icon */
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  pointer-events: auto;
  font-size: 14px;
}

.clear-button.visible {
  opacity: 1;
  pointer-events: auto;
}

.clear-button:hover {
  background-color: var(--card-element-hover-bg); /* Darker hover */
  transform: scale(1.05);
}

.clear-button:active {
  transform: scale(0.95);
}

/* Output Container for positioning copy and clear buttons */
.output-container {
  position: relative;
}

.output-container .text-input {
  padding-right: 88px; /* Maintain spacing */
}

/* Clear button in output field */
.output-clear-button {
  position: absolute;
  top: 10px;
  right: 52px;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background-color: var(--card-element-bg); /* Lighter dark for button */
  border: none;
  color: var(--text-primary); /* White icon */
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  opacity: 1;
  pointer-events: auto;
}

.output-clear-button.visible {
  opacity: 1;
  pointer-events: auto;
}

.output-clear-button:hover {
  background-color: var(--card-element-hover-bg); /* Darker hover */
  transform: scale(1.05);
}

.output-clear-button:active {
  transform: scale(0.95);
}

/* Copy button in output field */
.copy-button {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background-color: var(--purple); /* Purple primary button */
  border: none;
  color: var(--text-primary); /* White icon */
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.copy-button:hover {
  background-color: var(--purple-dark); /* Darker purple hover */
  transform: translateY(-50%) scale(1.05);
}

.copy-button:active {
  transform: translateY(-50%) scale(0.95);
}

.copy-button:focus {
  outline: 2px solid var(--purple); /* Purple focus */
  outline-offset: 2px;
}

/* Copy tooltip */
.copy-tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  right: 0;
  background-color: var(--bg-secondary); /* Dark tooltip */
  color: var(--text-primary); /* White text */
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 13px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease-in-out;
}

.copy-tooltip.show {
  opacity: 1;
}

.copy-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  right: 12px;
  border: 4px solid transparent;
  border-top-color: var(--bg-secondary); /* Arrow color same as tooltip bg */
}

/* Settings Card specific */
.settings-header {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary); /* White labels */
  margin-bottom: 20px;
}

.setting-group {
  margin-bottom: 20px;
}

.setting-group:last-of-type {
  margin-bottom: 0;
}

/* Custom Select Dropdown Styles */
.custom-select-container {
  position: relative;
  width: 100%;
  margin-top: 10px;
}

.custom-select {
  position: relative;
  width: 100%;
  height: 52px;
  padding: 0 48px 0 16px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background-color: var(--bg-secondary); /* Dark background */
  font-family: 'Inter', sans-serif; /* Apply new font family */
  font-size: 17px;
  font-weight: 400;
  color: var(--text-primary); /* White text */
  cursor: pointer;
  display: flex;
  align-items: center;
  user-select: none;
}

.custom-select:hover {
  border-color: var(--purple); /* Purple highlight on hover */
}

.custom-select.open {
  border-color: var(--purple); /* Purple border when open */
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2); /* Purple shadow */
}

.custom-select:focus {
  outline: 2px solid var(--purple); /* Purple focus */
  outline-offset: 2px;
  border-color: transparent;
}

.custom-select-chevron {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  color: var(--text-muted); /* Muted gray chevron */
  pointer-events: none;
  transition: transform 0.2s ease-in-out;
}

.custom-select.open .custom-select-chevron {
  transform: translateY(-50%) rotate(180deg);
}

/* Dropdown Menu */
.custom-select-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background-color: var(--bg-secondary); /* Dark background */
  border: 1px solid var(--border-color); /* Subtle border */
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3); /* Dark shadow */
  z-index: 10;
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height 0.2s ease-in-out, opacity 0.2s ease-in-out;
}

.custom-select-dropdown.open {
  max-height: 250px;
  opacity: 1;
}

.custom-select-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 48px;
  padding: 0 16px;
  font-family: 'Inter', sans-serif; /* Apply new font family */
  font-size: 17px;
  font-weight: 400;
  color: var(--text-primary); /* White text */
  cursor: pointer;
}

.custom-select-option:hover {
  background-color: rgba(255, 255, 255, 0.05); /* Subtle dark hover */
}

.custom-select-option.selected {
  color: var(--purple); /* Purple selected text */
}

.custom-select-option-check {
  font-size: 14px;
  color: var(--purple); /* Purple checkmark */
  opacity: 0;
  transition: opacity 0.15s ease-in-out;
}

.custom-select-option.selected .custom-select-option-check {
  opacity: 1;
}

/* Toggle Switches */
.toggle-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.toggle-option:last-of-type {
  margin-bottom: 0;
}

.toggle-label {
  font-size: 17px;
  font-weight: 400;
  color: var(--text-primary); /* White labels */
  font-family: 'Inter', sans-serif; /* Apply new font family */
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 60px;
  height: 34px;
}

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

.toggle-switch-label {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--border-color); /* Inactive toggle background */
  border-radius: 34px;
}

.toggle-switch-label:before {
  position: absolute;
  content: '';
  height: 26px;
  width: 26px;
  left: 4px;
  bottom: 4px;
  background-color: rgba(255, 255, 255, 0.9); /* Toggle circle slightly off-white */
  border-radius: 50%;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2); /* Darker shadow for knob */
  transition: transform 0.2s ease-in-out;
}

input:checked + .toggle-switch-label {
  background-color: var(--purple); /* Active toggle purple */
}

input:checked + .toggle-switch-label:before {
  transform: translateX(26px);
}

input:focus + .toggle-switch-label {
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.3); /* Purple focus shadow */
}

/* Expandable section for added stop words badges */
.stop-words-badge-section {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-in-out, margin-top 0.3s ease-in-out;
  margin-top: 0;
}

.stop-words-badge-section.expanded {
  max-height: 1000px; /* Adjust as needed */
  margin-top: 16px;
}

/* Stop word badges */
.badge-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.stop-word-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 8px 0 12px;
  background-color: var(--card-element-bg); /* Lighter dark for badge */
  color: var(--text-primary); /* White text */
  border-radius: 16px;
  font-family: 'Inter', sans-serif; /* Apply new font family */
  font-size: 14px;
  font-weight: 400;
  animation: fadeIn 0.2s ease-in-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.stop-word-badge.removing {
  animation: fadeOut 0.2s ease-in-out forwards;
}

@keyframes fadeOut {
  from {
    opacity: 1;
    transform: scale(1);
  }
  to {
    opacity: 0;
    transform: scale(0.8);
  }
}

.stop-word-badge:hover {
  background-color: var(--card-element-hover-bg); /* Darker hover */
  transform: scale(1.05);
}

.stop-word-badge .badge-text {
  flex: 1;
}

.stop-word-badge .remove-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-primary); /* White icon */
  opacity: 0.6;
  border-radius: 50%;
  font-size: 12px;
  transition: opacity 0.2s ease-in-out, background-color 0.2s ease-in-out;
}

.stop-word-badge .remove-icon:hover {
  opacity: 1;
  background-color: rgba(255, 255, 255, 0.1); /* Subtle hover for remove icon */
}

/* Action Buttons Fixed Footer */
.action-buttons-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--bg-secondary); /* Dark footer */
  padding: 20px;
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
  max-width: 430px;
  margin: 0 auto;
  z-index: 100;
}

.button {
  width: 100%;
  height: 52px;
  border-radius: 12px;
  font-family: 'Inter', sans-serif; /* Apply new font family */
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.button.secondary {
  background-color: transparent;
  color: var(--text-primary); /* White text */
  border: 1px solid var(--border-color); /* Subtle border for secondary */
}

.button.secondary:hover {
  background-color: var(--card-element-bg); /* Subtle hover */
  border-color: var(--text-primary); /* White border on hover */
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2); /* Darker shadow */
}

.button:active {
  transform: translateY(0);
  box-shadow: none;
}

.button:focus {
  outline: 2px solid var(--purple); /* Purple focus */
  outline-offset: 2px;
}

/* Responsive Adjustments */
@media (min-width: 768px) {
  body {
    padding-top: 40px;
  }

  .container {
    max-width: 768px;
    padding: 0 30px 110px 30px;
  }

  .page-title {
    font-size: 32px;
    margin-bottom: 0;
  }

  .action-buttons-footer {
    max-width: 768px;
    padding: 24px 30px;
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: 900px;
  }

  .action-buttons-footer {
    max-width: 900px;
  }
}