@import url("https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800&display=swap");
:root,
.duo {
  --duo-white: #ffffff;
  --duo-bg: #ffffff;
  --duo-text: #3c3c3c;
  --duo-text-secondary: #777777;
  --duo-text-on-dark: #ffffff;
  --duo-green: #58cc02;
  --duo-green-dark: #46a302;
  --duo-green-light: #7cdb36;
  --duo-green-bg: rgba(88, 204, 2, 0.1);
  --duo-blue: #1cb0f6;
  --duo-blue-dark: #1899d6;
  --duo-red: #ff4b4b;
  --duo-red-dark: #ea2b2b;
  --duo-orange: #ff9600;
  --duo-orange-dark: #e08600;
  --duo-purple: #ce82ff;
  --duo-purple-dark: #b660e0;
  --duo-yellow: #ffc800;
  --duo-yellow-dark: #e5b400;
  --duo-pink: #ff86d0;
  --duo-pink-dark: #e06cb5;
  --duo-primary: var(--duo-green);
  --duo-primary-dark: var(--duo-green-dark);
  --duo-surface: var(--duo-white);
  --duo-surface-gray: #f7f7f7;
  --duo-surface-hover: #f0f0f0;
  --duo-success: var(--duo-green);
  --duo-warning: var(--duo-orange);
  --duo-error: var(--duo-red);
  --duo-info: var(--duo-blue);
  --duo-border-color: #e5e5e5;
  --duo-border: 2px solid var(--duo-border-color);
  --duo-border-strong: 2px solid #cecece;
  --duo-shadow-bottom: 0 4px 0;
  --duo-shadow-sm: 0 2px 0;
  --duo-shadow-card: 0 2px 8px rgba(0,0,0,0.08);
  --duo-shadow-elevated: 0 4px 16px rgba(0,0,0,0.12);
  --duo-radius-sm: 8px;
  --duo-radius-md: 12px;
  --duo-radius-lg: 16px;
  --duo-radius-xl: 20px;
  --duo-radius-full: 9999px;
  --duo-font: 'Nunito', -apple-system, sans-serif;
  --duo-text-xs: 700 0.6875rem/1.3 var(--duo-font);
  --duo-text-sm: 700 0.8125rem/1.4 var(--duo-font);
  --duo-text-base: 600 0.9375rem/1.5 var(--duo-font);
  --duo-text-md: 700 1rem/1.4 var(--duo-font);
  --duo-text-lg: 700 1.125rem/1.35 var(--duo-font);
  --duo-text-xl: 800 1.375rem/1.25 var(--duo-font);
  --duo-text-2xl: 800 1.75rem/1.2 var(--duo-font);
  --duo-text-3xl: 800 2.25rem/1.15 var(--duo-font);
  --duo-label: 800 0.8125rem/1 var(--duo-font);
  --duo-caption: 700 0.75rem/1.3 var(--duo-font);
  --duo-duration-fast: 100ms;
  --duo-duration-normal: 200ms;
  --duo-duration-bounce: 400ms;
  --duo-easing: ease;
  --duo-easing-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duo-space-1: 4px;
  --duo-space-2: 8px;
  --duo-space-3: 12px;
  --duo-space-4: 16px;
  --duo-space-5: 20px;
  --duo-space-6: 24px;
  --duo-space-8: 32px;
  --duo-space-10: 40px;
  --duo-focus-ring: 0 0 0 3px rgba(88, 204, 2, 0.4);
}

.duo.dark,
.duo[data-theme=dark],
[data-theme=dark] .duo {
  --duo-bg: #131f24;
  --duo-text: #ffffff;
  --duo-text-secondary: #afafaf;
  --duo-surface: #1a2c32;
  --duo-surface-gray: #1f3640;
  --duo-surface-hover: #233e4a;
  --duo-border-color: #37464f;
  --duo-shadow-card: 0 2px 8px rgba(0,0,0,0.2);
}

.duo-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  text-decoration: none;
  font: var(--duo-label);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: var(--duo-radius-lg);
  height: 50px;
  padding: 0 20px;
  border: none;
  border-bottom: 4px solid var(--duo-primary-dark);
  background: var(--duo-primary);
  color: var(--duo-text-on-dark);
  transition: transform var(--duo-duration-fast) var(--duo-easing), filter var(--duo-duration-fast);
  -webkit-tap-highlight-color: transparent;
}
.duo-btn:hover {
  filter: brightness(1.05);
}
.duo-btn:active {
  border-bottom-width: 0;
  transform: translateY(4px);
}
.duo-btn:focus-visible {
  outline: none;
  box-shadow: var(--duo-focus-ring);
}
.duo-btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}
.duo-btn:disabled, .duo-btn[disabled] {
  background: var(--duo-border-color);
  border-bottom-color: #cecece;
  color: #afafaf;
  cursor: not-allowed;
  pointer-events: none;
}

.duo-btn--blue {
  background: var(--duo-blue);
  border-bottom-color: var(--duo-blue-dark);
}

.duo-btn--red {
  background: var(--duo-red);
  border-bottom-color: var(--duo-red-dark);
}

.duo-btn--orange {
  background: var(--duo-orange);
  border-bottom-color: var(--duo-orange-dark);
}

.duo-btn--purple {
  background: var(--duo-purple);
  border-bottom-color: var(--duo-purple-dark);
}

.duo-btn--yellow {
  background: var(--duo-yellow);
  border-bottom-color: var(--duo-yellow-dark);
  color: var(--duo-text);
}

.duo-btn--outline {
  background: var(--duo-surface);
  color: var(--duo-blue);
  border: 2px solid var(--duo-border-color);
  border-bottom: 4px solid var(--duo-border-color);
}
.duo-btn--outline:hover {
  background: var(--duo-surface-gray);
}
.duo-btn--outline:active {
  border-bottom-width: 2px;
  transform: translateY(2px);
}

.duo-btn--ghost {
  background: transparent;
  color: var(--duo-blue);
  border: none;
}
.duo-btn--ghost:hover {
  background: var(--duo-surface-gray);
}
.duo-btn--ghost:active {
  transform: translateY(1px);
}

.duo-btn--sm {
  height: 40px;
  padding: 0 14px;
  font-size: 0.75rem;
  border-radius: var(--duo-radius-md);
  border-bottom-width: 3px;
}
.duo-btn--sm:active {
  border-bottom-width: 0;
  transform: translateY(3px);
}

.duo-btn--lg {
  height: 56px;
  padding: 0 28px;
  font-size: 0.9375rem;
  border-radius: var(--duo-radius-xl);
  border-bottom-width: 5px;
}
.duo-btn--lg:active {
  border-bottom-width: 0;
  transform: translateY(5px);
}

.duo-btn--full {
  width: 100%;
}

.duo-btn--icon {
  width: 50px;
  padding: 0;
}
.duo-btn--icon.duo-btn--sm {
  width: 40px;
}
.duo-btn--icon.duo-btn--lg {
  width: 56px;
}

.duo-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--duo-surface);
  border: var(--duo-border);
  border-radius: var(--duo-radius-lg);
  overflow: hidden;
  color: var(--duo-text);
}
.duo-card h3, .duo-card h4 {
  font: var(--duo-text-lg);
  margin: 0;
}
.duo-card p {
  font: var(--duo-text-base);
  color: var(--duo-text-secondary);
  margin: 4px 0 0;
}

.duo-card--interactive {
  cursor: pointer;
  transition: transform var(--duo-duration-normal) var(--duo-easing-bounce), box-shadow var(--duo-duration-normal);
}
.duo-card--interactive:hover {
  transform: translateY(-2px);
  box-shadow: var(--duo-shadow-elevated);
}
.duo-card--interactive:active {
  transform: translateY(0);
}

.duo-card--lesson {
  border-top: 4px solid var(--duo-green);
}

.duo-card--lesson-blue {
  border-top-color: var(--duo-blue);
}

.duo-card--lesson-purple {
  border-top-color: var(--duo-purple);
}

.duo-card--lesson-orange {
  border-top-color: var(--duo-orange);
}

.duo-card--lesson-red {
  border-top-color: var(--duo-red);
}

.duo-card--achievement {
  background: var(--duo-green);
  color: var(--duo-text-on-dark);
  border-color: var(--duo-green-dark);
  text-align: center;
}

.duo-card--achievement-blue {
  background: var(--duo-blue);
  border-color: var(--duo-blue-dark);
  color: white;
}

.duo-card--achievement-purple {
  background: var(--duo-purple);
  border-color: var(--duo-purple-dark);
  color: white;
}

.duo-card--achievement-orange {
  background: var(--duo-orange);
  border-color: var(--duo-orange-dark);
  color: white;
}

.duo-card__header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 16px 0;
}

.duo-card__icon {
  font-size: 2rem;
  line-height: 1;
  flex-shrink: 0;
}

.duo-card__header-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.duo-card__title {
  font: var(--duo-text-lg);
  margin: 0;
}

.duo-card__subtitle {
  font: var(--duo-caption);
  color: var(--duo-text-secondary);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.duo-card__body {
  padding: 12px 16px 16px;
  font: var(--duo-text-base);
}

.duo-card__header + .duo-card__body {
  padding-top: 8px;
}

.duo-card__footer {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-top: 2px solid var(--duo-border-color);
  margin-top: auto;
}

.duo-card__actions {
  display: flex;
  gap: 8px;
  padding: 0 16px 16px;
}

.duo-card__progress {
  height: 12px;
  background: var(--duo-surface-gray);
  border-radius: var(--duo-radius-full);
  margin: 8px 16px;
  overflow: hidden;
}

.duo-card__progress-fill {
  height: 100%;
  background: var(--duo-green);
  border-radius: var(--duo-radius-full);
  transition: width 600ms var(--duo-easing-bounce);
}

.duo-card__progress-fill--blue {
  background: var(--duo-blue);
}

.duo-card__progress-fill--orange {
  background: var(--duo-orange);
}

.duo-card__progress-fill--purple {
  background: var(--duo-purple);
}

.duo-card__xp {
  font: var(--duo-text-xl);
  color: var(--duo-green);
  text-align: center;
  padding: 8px 0;
}

.duo-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
}

.duo-field__label {
  font: var(--duo-label);
  color: var(--duo-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.duo-input {
  width: 100%;
  height: 48px;
  padding: 0 16px;
  font: var(--duo-text-base);
  color: var(--duo-text);
  background: var(--duo-surface);
  border: var(--duo-border-strong);
  border-radius: var(--duo-radius-md);
  transition: border-color var(--duo-duration-fast), box-shadow var(--duo-duration-fast);
}
.duo-input::placeholder {
  color: #afafaf;
  font-weight: 600;
}
.duo-input:focus {
  outline: none;
  border-color: var(--duo-blue);
  box-shadow: 0 0 0 3px rgba(28, 176, 246, 0.25);
}
.duo-input:hover:not(:focus) {
  border-color: #b0b0b0;
}

.duo-field__message {
  font: var(--duo-caption);
  color: var(--duo-text-secondary);
}

.duo-field--error .duo-input {
  border-color: var(--duo-red);
}
.duo-field--error .duo-input:focus {
  box-shadow: 0 0 0 3px rgba(255, 75, 75, 0.25);
}
.duo-field--error .duo-field__label {
  color: var(--duo-red);
}
.duo-field--error .duo-field__message {
  color: var(--duo-red);
}

.duo-field--success .duo-input {
  border-color: var(--duo-green);
}
.duo-field--success .duo-field__message {
  color: var(--duo-green);
}

.duo-field--disabled {
  opacity: 0.4;
  pointer-events: none;
}

.duo-input--sm {
  height: 40px;
  padding: 0 12px;
  font-size: 0.8125rem;
  border-radius: var(--duo-radius-sm);
}

.duo-input--lg {
  height: 56px;
  padding: 0 20px;
  font-size: 1.0625rem;
}

.duo-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font: var(--duo-caption);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
  user-select: none;
  border-radius: var(--duo-radius-full);
  padding: 4px 10px;
  height: 24px;
  vertical-align: middle;
  background: var(--duo-surface-gray);
  color: var(--duo-text);
  border: none;
}

.duo-badge--green {
  background: var(--duo-green-bg);
  color: var(--duo-green-dark);
}

.duo-badge--blue {
  background: rgba(28, 176, 246, 0.12);
  color: var(--duo-blue-dark);
}

.duo-badge--red {
  background: rgba(255, 75, 75, 0.12);
  color: var(--duo-red-dark);
}

.duo-badge--orange {
  background: rgba(255, 150, 0, 0.12);
  color: var(--duo-orange-dark);
}

.duo-badge--purple {
  background: rgba(206, 130, 255, 0.12);
  color: var(--duo-purple-dark);
}

.duo-badge--yellow {
  background: rgba(255, 200, 0, 0.15);
  color: #8a6d00;
}

.duo-badge--filled {
  background: var(--duo-green);
  color: white;
}

.duo-badge--filled-blue {
  background: var(--duo-blue);
  color: white;
}

.duo-badge--filled-red {
  background: var(--duo-red);
  color: white;
}

.duo-badge--filled-orange {
  background: var(--duo-orange);
  color: white;
}

.duo-badge--xp {
  background: var(--duo-yellow);
  color: #5a4800;
  font-weight: 800;
  padding: 4px 12px;
}

.duo-badge--streak {
  background: var(--duo-orange);
  color: white;
  font-weight: 800;
}

.duo-badge--sm {
  font-size: 0.625rem;
  padding: 3px 8px;
  height: 20px;
}

.duo-badge--lg {
  font-size: 0.8125rem;
  padding: 5px 14px;
  height: 28px;
}

.duo-avatar {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
  user-select: none;
  background: var(--duo-surface-gray);
  color: var(--duo-text-secondary);
  font: 800 0.875rem/1 var(--duo-font);
  border: 3px solid var(--duo-border-color);
  border-radius: var(--duo-radius-full);
  width: 44px;
  height: 44px;
}

.duo-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

.duo-avatar__initials {
  text-transform: uppercase;
}

.duo-avatar--sm {
  width: 32px;
  height: 32px;
  font-size: 0.6875rem;
  border-width: 2px;
}

.duo-avatar--lg {
  width: 56px;
  height: 56px;
  font-size: 1rem;
}

.duo-avatar--xl {
  width: 72px;
  height: 72px;
  font-size: 1.25rem;
  border-width: 4px;
}

.duo-avatar--green {
  border-color: var(--duo-green);
}

.duo-avatar--blue {
  border-color: var(--duo-blue);
}

.duo-avatar--purple {
  border-color: var(--duo-purple);
}

.duo-avatar--orange {
  border-color: var(--duo-orange);
}

.duo-avatar--yellow {
  border-color: var(--duo-yellow);
}

.duo-avatar__status {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--duo-surface);
  background: var(--duo-green);
}
.duo-avatar__status--offline {
  background: #afafaf;
}
.duo-avatar__status--streak {
  background: var(--duo-orange);
}

.duo-avatar-group {
  display: flex;
}
.duo-avatar-group .duo-avatar {
  margin-left: -10px;
  box-shadow: 0 0 0 2px var(--duo-surface);
}
.duo-avatar-group .duo-avatar:first-child {
  margin-left: 0;
}

.duo-alert {
  display: flex;
  gap: 12px;
  padding: 14px 16px;
  border: 2px solid var(--duo-border-color);
  border-radius: var(--duo-radius-lg);
  font: var(--duo-text-base);
  color: var(--duo-text);
  background: var(--duo-surface);
}

.duo-alert__icon {
  flex-shrink: 0;
  font-size: 1.5rem;
  line-height: 1.2;
}

.duo-alert__content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.duo-alert__title {
  font: var(--duo-text-md);
  margin: 0;
}

.duo-alert__body {
  font: var(--duo-text-base);
  font-weight: 600;
  color: var(--duo-text-secondary);
  margin: 0;
}

.duo-alert--info {
  border-color: var(--duo-blue);
  background: rgba(28, 176, 246, 0.06);
}

.duo-alert--success {
  border-color: var(--duo-green);
  background: var(--duo-green-bg);
}

.duo-alert--warning {
  border-color: var(--duo-orange);
  background: rgba(255, 150, 0, 0.06);
}

.duo-alert--error {
  border-color: var(--duo-red);
  background: rgba(255, 75, 75, 0.06);
}

.duo-alert--achievement {
  border-color: var(--duo-yellow);
  background: rgba(255, 200, 0, 0.08);
  text-align: center;
  flex-direction: column;
  align-items: center;
}
.duo-alert--achievement .duo-alert__icon {
  font-size: 2rem;
}

.duo-appbar {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  height: 56px;
  padding: 0 16px;
  background: var(--duo-surface);
  border-bottom: var(--duo-border);
  color: var(--duo-text);
  z-index: 10;
}

.duo-appbar__nav {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  color: var(--duo-text-secondary);
  cursor: pointer;
  border-radius: var(--duo-radius-md);
  padding: 0;
  transition: background var(--duo-duration-fast);
}
.duo-appbar__nav:hover {
  background: var(--duo-surface-gray);
}
.duo-appbar__nav svg {
  width: 20px;
  height: 20px;
}

.duo-appbar__title {
  font: var(--duo-text-lg);
  color: var(--duo-text);
  margin: 0;
}

.duo-appbar__spacer {
  flex: 1;
}

.duo-appbar__actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.duo-appbar__action {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  color: var(--duo-text-secondary);
  cursor: pointer;
  border-radius: var(--duo-radius-md);
  padding: 0;
  transition: background var(--duo-duration-fast);
}
.duo-appbar__action:hover {
  background: var(--duo-surface-gray);
}
.duo-appbar__action svg {
  width: 20px;
  height: 20px;
}

.duo-appbar__stat {
  display: flex;
  align-items: center;
  gap: 4px;
  font: var(--duo-text-sm);
  color: var(--duo-text);
  padding: 0 8px;
}

.duo-appbar__stat-icon {
  font-size: 1.125rem;
  line-height: 1;
}

.duo-sidebar {
  display: flex;
  flex-direction: column;
  width: 240px;
  min-height: 100%;
  padding: 12px;
  background: var(--duo-surface);
  border-right: var(--duo-border);
  flex-shrink: 0;
  overflow-y: auto;
}

.duo-sidebar__header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px 16px;
}

.duo-sidebar__logo {
  font: var(--duo-text-xl);
  color: var(--duo-green);
  text-decoration: none;
}

.duo-sidebar__items {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.duo-sidebar__item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  height: 44px;
  padding: 0 12px;
  border: none;
  background: transparent;
  cursor: pointer;
  text-decoration: none;
  color: var(--duo-text-secondary);
  font: var(--duo-text-md);
  border-radius: var(--duo-radius-md);
  transition: all var(--duo-duration-fast);
}
.duo-sidebar__item svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}
.duo-sidebar__item:hover {
  background: var(--duo-surface-gray);
  color: var(--duo-text);
}

.duo-sidebar__item-icon {
  font-size: 1.25rem;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}

.duo-sidebar__item--active {
  background: var(--duo-blue);
  color: white;
  font-weight: 800;
}
.duo-sidebar__item--active:hover {
  background: var(--duo-blue-dark);
  color: white;
}

.duo-sidebar__divider {
  height: 2px;
  background: var(--duo-border-color);
  margin: 8px 12px;
  border: none;
  border-radius: 1px;
}

.duo-sidebar__streak {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  margin: 8px 0;
  background: var(--duo-surface-gray);
  border-radius: var(--duo-radius-md);
}

.duo-sidebar__streak-icon {
  font-size: 1.75rem;
}

.duo-sidebar__streak-info {
  display: flex;
  flex-direction: column;
}

.duo-sidebar__streak-count {
  font: var(--duo-text-xl);
  color: var(--duo-orange);
}

.duo-sidebar__streak-label {
  font: var(--duo-caption);
  color: var(--duo-text-secondary);
  text-transform: uppercase;
}

.duo-tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: var(--duo-surface-gray);
  border-radius: var(--duo-radius-lg);
}

.duo-tab {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 16px;
  height: 38px;
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--duo-text-secondary);
  font: var(--duo-text-sm);
  text-decoration: none;
  white-space: nowrap;
  border-radius: var(--duo-radius-md);
  transition: all var(--duo-duration-fast);
}
.duo-tab:hover {
  color: var(--duo-text);
}

.duo-tab--active {
  background: var(--duo-surface);
  color: var(--duo-text);
  box-shadow: var(--duo-shadow-card);
}
.duo-tab--active:hover {
  color: var(--duo-text);
}

.duo-tabs--green .duo-tab--active {
  background: var(--duo-green);
  color: white;
  box-shadow: none;
}

.duo-tabs--blue .duo-tab--active {
  background: var(--duo-blue);
  color: white;
  box-shadow: none;
}

.duo-tabs--underline {
  background: transparent;
  padding: 0;
  border-bottom: 2px solid var(--duo-border-color);
  border-radius: 0;
  gap: 0;
}
.duo-tabs--underline .duo-tab {
  border-radius: 0;
  position: relative;
  height: 42px;
}
.duo-tabs--underline .duo-tab--active {
  box-shadow: none;
  color: var(--duo-blue);
}
.duo-tabs--underline .duo-tab--active::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--duo-blue);
  border-radius: 2px 2px 0 0;
}

.duo-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 30px;
  padding: 0 12px;
  border: 2px solid var(--duo-border-color);
  border-radius: var(--duo-radius-full);
  background: var(--duo-surface);
  color: var(--duo-text);
  font: var(--duo-caption);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  transition: all var(--duo-duration-fast);
}
.duo-chip:hover {
  background: var(--duo-surface-gray);
  border-color: #b0b0b0;
}
.duo-chip:active {
  transform: translateY(1px);
}

.duo-chip--active {
  background: var(--duo-blue);
  color: white;
  border-color: var(--duo-blue-dark);
}
.duo-chip--active:hover {
  background: var(--duo-blue-dark);
}

.duo-chip--green {
  background: var(--duo-green-bg);
  color: var(--duo-green-dark);
  border-color: transparent;
}

.duo-chip--blue {
  background: rgba(28, 176, 246, 0.12);
  color: var(--duo-blue-dark);
  border-color: transparent;
}

.duo-chip--orange {
  background: rgba(255, 150, 0, 0.12);
  color: var(--duo-orange-dark);
  border-color: transparent;
}

.duo-chip--purple {
  background: rgba(206, 130, 255, 0.12);
  color: var(--duo-purple-dark);
  border-color: transparent;
}

.duo-chip--red {
  background: rgba(255, 75, 75, 0.12);
  color: var(--duo-red-dark);
  border-color: transparent;
}

.duo-chip:disabled,
.duo-chip[disabled] {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.duo-chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.duo-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duo-duration-normal), visibility var(--duo-duration-normal);
}
.duo-modal-backdrop.duo-modal-backdrop--open {
  opacity: 1;
  visibility: visible;
}

.duo-modal {
  position: relative;
  display: flex;
  flex-direction: column;
  width: min(400px, 100vw - 32px);
  max-height: calc(100vh - 48px);
  background: var(--duo-surface);
  color: var(--duo-text);
  border: var(--duo-border);
  border-radius: var(--duo-radius-xl);
  box-shadow: var(--duo-shadow-elevated);
  overflow: hidden;
}

.duo-modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 20px 0;
  gap: 12px;
}

.duo-modal__title {
  font: var(--duo-text-xl);
  color: var(--duo-text);
  margin: 0;
}

.duo-modal__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  background: var(--duo-surface-gray);
  color: var(--duo-text-secondary);
  cursor: pointer;
  border-radius: var(--duo-radius-full);
  padding: 0;
  flex-shrink: 0;
  font-size: 1.125rem;
  transition: background var(--duo-duration-fast);
}
.duo-modal__close:hover {
  background: var(--duo-surface-hover);
}

.duo-modal__body {
  padding: 16px 20px 20px;
  font: var(--duo-text-base);
  color: var(--duo-text-secondary);
  overflow-y: auto;
  flex: 1;
}

.duo-modal__footer {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0 20px 20px;
}

.duo-modal--celebration {
  text-align: center;
}
.duo-modal--celebration .duo-modal__header {
  justify-content: center;
}
.duo-modal--celebration .duo-modal__body {
  text-align: center;
}

.duo-modal__emoji {
  font-size: 3rem;
  line-height: 1;
  margin-bottom: 8px;
}

.duo-modal--sm {
  width: min(320px, 100vw - 32px);
}

.duo-modal--lg {
  width: min(480px, 100vw - 32px);
}