/* Sequence Timer Styles - Adapted from maxxF with design system integration */

/* Animations */
@keyframes slideApart {
  0% {
    transform: translateX(0) translateY(0);
    opacity: 1;
  }
  50% {
    transform: translateX(-100%) translateY(-40px);
    opacity: 0;
  }
  51% {
    transform: translateX(100%) translateY(40px);
    opacity: 0;
  }
  100% {
    transform: translateX(0) translateY(0);
    opacity: 1;
  }
}

@keyframes slideApartReverse {
  0% {
    transform: translateX(0);
    z-index: 20;
  }
  50% {
    transform: translateX(150%);
    z-index: 20;
  }
  51% {
    z-index: 10;
    transform: translateX(-150%);
  }
  100% {
    transform: translateX(0);
    z-index: 10;
  }
}

@keyframes flipImage {
  0% {
    transform: scaleX(1);
  }
  50% {
    transform: scaleX(0);
  }
  100% {
    transform: scaleX(-1);
  }
}

/* slideLeft animation removed - using CSS transitions instead */

@keyframes slideRight {
  0% {
    transform: translateX(0);
    opacity: 1;
  }
  100% {
    transform: translateX(100%);
    opacity: 0;
  }
}

@keyframes flipSet {
  0% {
    transform: rotateY(0deg);
    opacity: 1;
  }
  50% {
    transform: rotateY(90deg);
    opacity: 0.5;
  }
  100% {
    transform: rotateY(0deg);
    opacity: 1;
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Animation Classes */
.slide-apart {
  animation: slideApart 0.8s ease-in-out forwards;
}

.slide-apart-reverse {
  animation: slideApartReverse 0.8s ease-in-out forwards;
}

.flip-image {
  animation: flipImage 0.8s ease-in-out forwards;
}

/* slide-left class removed - transitions handle animation automatically */

.slide-right {
  animation: slideRight 0.3s ease-in-out;
}

.flip-set {
  animation: flipSet 0.3s ease-in-out;
}

.animate-fade-in {
  animation: fade-in 0.7s ease-out forwards;
}

/* Sequence Timer Container */
.sequence-timer {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  background: var(--color-bg-secondary);
  padding: var(--space-8);
  min-height: 100vh;
  position: relative;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  width: 100%;
}

/* Carousel Section */
/* Total Time Display */
.sequence-total-time {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: var(--color-bg-primary);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  z-index: 1000;
  min-width: 200px;
  max-width: 400px;
}

.sequence-total-time__header {
  padding: 0.75rem 1rem;
  text-align: center;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  position: relative;
  transition: background-color 0.2s ease;
}

.sequence-total-time__header:hover {
  background-color: var(--color-bg-secondary);
  border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
}

.sequence-total-time__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

.sequence-total-time__value {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  font-variant-numeric: tabular-nums;
}

.sequence-total-time__toggle {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  padding: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, color 0.2s ease;
  width: 24px;
  height: 24px;
}

.sequence-total-time__toggle:hover {
  color: var(--color-text-primary);
}

.sequence-total-time__toggle--expanded {
  transform: rotate(0deg);
}

.sequence-total-time__agenda {
  border-top: 1px solid var(--color-border);
  max-height: 400px;
  overflow-y: auto;
  background: var(--color-bg-secondary);
}

.sequence-total-time__agenda-header {
  padding: 0.75rem 1rem;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-primary);
  position: sticky;
  top: 0;
  z-index: 1;
}

.sequence-total-time__agenda-list {
  padding: 0.5rem 0;
  position: relative;
  isolation: isolate;
}

.sequence-total-time__agenda-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--color-border);
  transition: background-color 0.2s ease;
  position: relative;
  z-index: 1;
}

.sequence-total-time__agenda-item:last-child {
  border-bottom: none;
}

.sequence-total-time__agenda-item:hover {
  background-color: var(--color-bg-tertiary);
  z-index: 2;
}

.sequence-total-time__agenda-item--current {
  background-color: var(--color-primary-light);
  border-left: 3px solid var(--color-primary);
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  position: relative;
}

.sequence-total-time__agenda-item--current:hover {
  background-color: var(--color-primary-light);
  z-index: 100;
}

.sequence-total-time__agenda-item--break {
  opacity: 0.7;
  font-style: italic;
}

.sequence-total-time__agenda-item-name {
  flex: 1;
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.sequence-total-time__agenda-item-set {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-normal);
}

.sequence-total-time__agenda-item-break {
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.sequence-total-time__agenda-item-duration {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  font-variant-numeric: tabular-nums;
  margin-left: 1rem;
}

.sequence-carousel {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.sequence-carousel__inner {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  max-width: 100%;
  padding: 0 var(--space-4);
  perspective: 1000px;
}

/* Card Container */
.card-container {
  position: relative;
}

.card-container:hover .zone-indicator {
  opacity: 0.15;
}

.card-container:hover > div {
  transform: translate(var(--tx), var(--ty));
  transition: transform var(--transition-slow);
}

.card-container > div {
  --tx: 0px;
  --ty: 0px;
  transition: transform var(--transition-slow);
}

.card-container:hover > div:hover {
  transform: translate(var(--tx), var(--ty)) scale(1.05);
  z-index: 30;
}

/* Zone Indicators */
.zone-indicator {
  position: absolute;
  opacity: 0;
  transition: opacity var(--transition-fast);
  pointer-events: none;
}

.zone-indicator:hover {
  opacity: 0.3 !important;
}

.zone-left {
  left: 0;
  top: 0;
  width: 50%;
  height: 100%;
  background: linear-gradient(to right, rgba(239, 68, 68, 0.1), transparent);
}

.zone-left:hover {
  opacity: 0.3 !important;
  background: linear-gradient(to right, rgba(239, 68, 68, 0.2), transparent);
  box-shadow: inset 0 0 20px rgba(239, 68, 68, 0.1);
}

.zone-right {
  right: 0;
  top: 0;
  width: 50%;
  height: 100%;
  background: linear-gradient(to left, rgba(16, 185, 129, 0.1), transparent);
}

.zone-right:hover {
  opacity: 0.3 !important;
  background: linear-gradient(to left, rgba(16, 185, 129, 0.2), transparent);
  box-shadow: inset 0 0 20px rgba(16, 185, 129, 0.1);
}

.zone-center {
  left: 30%;
  top: 20%;
  width: 40%;
  height: 60%;
  background: radial-gradient(circle, #3B82F6 0%, transparent 100%);
}

/* Current Exercise Card */
.current-exercise-card {
  position: relative;
  transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
              opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              filter 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform, opacity, filter;
  width: 384px;
  flex-shrink: 0;
  z-index: 10;
  transform: transition-all duration-500 ease-in-out;
  height: 400px;
}

@media (min-width: 768px) {
  .current-exercise-card {
    width: 420px;
  }
}

/* Navigation Buttons */
.sequence-nav-button {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 30;
  padding: var(--space-2);
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.sequence-nav-button:hover {
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
}

.sequence-nav-button--prev {
  left: var(--space-2);
}

.sequence-nav-button--next {
  right: var(--space-2);
}

.sequence-nav-button svg {
  width: 24px;
  height: 24px;
}

/* Sequence Card */
.sequence-card {
  position: absolute;
  inset: 0;
  background: var(--color-bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              filter 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  cursor: pointer;
  border: 1px solid var(--color-border-primary);
  display: flex;
  flex-direction: column;
  will-change: transform, opacity, filter;
}

.sequence-card__header {
  text-align: center;
  min-height: 72px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-2);
}

.sequence-card__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  line-height: var(--line-height-tight);
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  word-break: break-word;
}

.sequence-card__description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

.sequence-card__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sequence-card__image {
  width: 100%;
  flex: 1;
  min-height: 256px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-bg-primary);
  margin-top: var(--space-4);
  position: relative;
}

.sequence-card__image::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(to bottom, transparent 0%, rgba(255, 255, 255, 0.3) 50%, rgba(255, 255, 255, 0.95) 100%);
  pointer-events: none;
  z-index: 1;
}

.sequence-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.sequence-card__set-counter {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  padding: var(--space-1) var(--space-2);
  background: rgba(0, 0, 0, 0.5);
  border-radius: var(--radius-md);
  color: var(--color-text-inverse);
  font-size: var(--font-size-sm);
  font-family: var(--font-family-mono);
  z-index: 10;
}

.sequence-card__footer {
  flex-shrink: 0;
  padding: var(--space-4) var(--space-2);
  text-align: center;
  background: #ffffff;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.sequence-card__footer--paused {
  background: linear-gradient(to bottom, rgba(236, 72, 153, 0.25), #ffffff);
  border-top-color: rgba(236, 72, 153, 0.4);
}

.sequence-card__footer--active {
  background: linear-gradient(to bottom, rgba(239, 68, 68, 0.25), #ffffff);
  border-top-color: rgba(239, 68, 68, 0.4);
}

.sequence-card__footer--break {
  background: linear-gradient(to bottom, rgba(59, 130, 246, 0.25), #ffffff);
  border-top-color: rgba(59, 130, 246, 0.4);
}

.sequence-card__timer {
  width: 100%;
  text-align: center;
}

.sequence-card__timer-display {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-shadow: none;
}

.sequence-card__manual-hint {
  width: 100%;
  text-align: center;
  background: rgba(0, 0, 0, 0.1);
  color: var(--color-text-primary);
  padding: var(--space-2);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

/* Legacy overlay styles for non-current cards */
.sequence-card__overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.5), transparent);
  pointer-events: none;
}

/* Gradient States */
.sequence-card__overlay--paused {
  background: linear-gradient(to top, rgba(236, 72, 153, 0.5), transparent);
}

.sequence-card__overlay--active {
  background: linear-gradient(to top, rgba(239, 68, 68, 0.5), transparent);
}

.sequence-card__overlay--break {
  background: linear-gradient(to top, rgba(59, 130, 246, 0.5), transparent);
}

.sequence-card__overlay--completed {
  background: linear-gradient(to top, rgba(16, 185, 129, 0.3), transparent);
}

.sequence-card__overlay--pending {
  background: linear-gradient(to top, rgba(107, 114, 128, 0.3), transparent);
}

/* Previous/Next Sequence Cards */
.sequence-preview-card {
  position: relative;
  width: 80px;
  flex-shrink: 0;
  transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              filter 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  opacity: 0.4;
  will-change: transform, opacity, filter;
  cursor: pointer;
}

.sequence-preview-card:hover {
  transform: scale(1.05);
  opacity: 0.9;
}

.sequence-preview-card--hidden {
  opacity: 0;
  pointer-events: none;
}

.sequence-preview-card__inner {
  position: relative;
  background: var(--color-bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.sequence-preview-card__header {
  text-align: center;
  padding: var(--space-2);
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-secondary);
}

.sequence-preview-card__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  line-height: var(--line-height-tight);
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  word-break: break-word;
}

.sequence-preview-card__image {
  width: 100%;
  height: 144px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.sequence-preview-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  padding: var(--space-2);
}

.sequence-preview-card__fade-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  border-radius: var(--radius-xl);
}

/* Menu Section */
.sequence-menu {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .sequence-menu {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .sequence-menu {
    grid-template-columns: repeat(4, 1fr);
  }
}

.sequence-menu__card {
  background: var(--color-bg-primary);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

.sequence-menu__card--full-width {
  grid-column: 1 / -1;
}

.sequence-menu__header {
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.sequence-menu__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-align: center;
  flex: 1;
}

.sequence-menu__toggle {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: var(--space-2);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.sequence-menu__toggle:hover {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.sequence-menu__body {
  padding: var(--space-6);
}

/* Timer Controls */
.timer-controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.timer-control {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.timer-control__label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
}

.timer-control__label--work {
  color: var(--color-primary);
}

.timer-control__label--rest {
  color: #3b82f6;
}

.timer-control__buttons {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.timer-control__button {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
}

.timer-control__button--work {
  background: var(--color-primary-light);
}

.timer-control__button--work:hover {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.timer-control__button--rest {
  background: #dbeafe;
}

.timer-control__button--rest:hover {
  background: #3b82f6;
  color: var(--color-text-inverse);
}

.timer-control__value {
  font-family: var(--font-family-mono);
  font-weight: var(--font-weight-bold);
  width: 64px;
  text-align: center;
  font-size: var(--font-size-xl);
}

.timer-control__value--work {
  color: var(--color-primary);
}

.timer-control__value--rest {
  color: #3b82f6;
}

/* Preset Buttons */
.preset-button {
  width: 100%;
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin: 0;
}

.preset-button--workout {
  background: #e9d5ff;
  color: #9333ea;
}

.preset-button--workout:hover {
  background: #d8b4fe;
}

.preset-button--meditation {
  background: #dbeafe;
  color: #2563eb;
}

.preset-button--meditation:hover {
  background: #bfdbfe;
}

.preset-button--clear {
  background: #dbeafe;
  color: #2563eb;
}

.preset-button--clear:hover {
  background: #bfdbfe;
}

/* Type Selector */
.type-selector {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.type-button {
  width: 100%;
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.type-button--workout {
  background: #e9d5ff;
  color: #9333ea;
}

.type-button--workout.active {
  background: #9333ea;
  color: var(--color-text-inverse);
}

.type-button--meditation {
  background: #dbeafe;
  color: #2563eb;
}

.type-button--meditation.active {
  background: #2563eb;
  color: var(--color-text-inverse);
}

.type-button--custom {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.type-button--custom.active {
  background: var(--color-text-secondary);
  color: var(--color-text-inverse);
}

/* Filters */
.filter-section {
  margin-bottom: var(--space-4);
}

.filter-section__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.filter-tags--horizontal {
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: flex-start;
}

.filter-tag {
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-tag--inactive {
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
}

.filter-tag--inactive:hover {
  background: var(--color-bg-tertiary);
}

.filter-tag--active {
  background: #3b82f6;
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}

/* Tools */
.tools-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.tools-section__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.tool-button {
  width: 100%;
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.tool-button:hover {
  background: var(--color-bg-tertiary);
}

.tool-button svg {
  width: 16px;
  height: 16px;
}

/* Overview Grid */
.sequence-overview {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.sequence-overview__header {
  padding: var(--space-4);
  background: var(--color-bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.sequence-overview__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0;
}

.sequence-overview__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .sequence-overview__content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .sequence-overview__content {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .sequence-overview__content {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Activities Grid */
.activities-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .activities-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .activities-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .activities-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.activity-card {
  background: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  border: 1px solid var(--color-border-primary);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.activity-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.activity-card__image {
  width: 100%;
  height: 150px;
  overflow: hidden;
  background: var(--color-bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.activity-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.activity-card__info {
  padding: var(--space-3);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.activity-card__name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
  line-height: var(--line-height-tight);
}

.activity-card__description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
  line-height: var(--line-height-normal);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.activity-card__categories {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.activity-card__category {
  font-size: var(--font-size-xs);
  padding: var(--space-1) var(--space-2);
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
}

.activity-card__meta {
  display: flex;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: auto;
}

.activity-card__meta span {
  padding: var(--space-1) var(--space-2);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-sm);
}

.activity-card__actions {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-3);
  border-top: 1px solid var(--color-border-primary);
  background: var(--color-bg-secondary);
  justify-content: center;
}

/* Action Buttons */
.action-button {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-base);
  padding: 0;
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.action-button:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-sm);
}

.action-button--edit {
  background: #dbeafe;
}

.action-button--edit:hover {
  background: #3b82f6;
}

.action-button--delete {
  background: #fee2e2;
}

.action-button--delete:hover {
  background: #dc2626;
}

.activity-card__button {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.activity-card__button--edit {
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-primary);
}

.activity-card__button--edit:hover {
  background: var(--color-bg-tertiary);
}

.activity-card__button--delete {
  background: #dc2626;
  color: var(--color-text-inverse);
}

.activity-card__button--delete:hover {
  background: #b91c1c;
}

.sequence-item-card {
  position: relative;
  height: 200px;
  width: 100%;
}

.sequence-item-card__stack {
  position: absolute;
  width: 100%;
  height: 200px;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-lg);
  border: 2px solid;
  transition: all var(--transition-slow);
}

.sequence-item-card__stack--inactive {
  border-color: var(--color-border-primary);
  background: var(--color-bg-secondary);
}

.sequence-item-card__stack--completed {
  border-color: var(--color-primary);
  background: var(--color-bg-secondary);
}

.sequence-item-card__stack--active-paused {
  border-color: #ec4899;
  background: var(--color-bg-secondary);
  border-width: 3px;
  box-shadow: 0 0 0 1px rgba(236, 72, 153, 0.3);
}

.sequence-item-card__stack--active-running {
  border-color: #ef4444;
  background: var(--color-bg-secondary);
  border-width: 3px;
  box-shadow: 0 0 0 1px rgba(239, 68, 68, 0.3);
}

.sequence-item-card__stack--active-break {
  border-color: #3b82f6;
  background: var(--color-bg-secondary);
  border-width: 3px;
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.3);
}

.sequence-item-card__stack--pending {
  border-color: var(--color-text-secondary);
  background: var(--color-bg-secondary);
}

.sequence-item-card__hover-indicator {
  position: absolute;
  inset: 0;
  display: flex;
  opacity: 0;
  transition: opacity var(--transition-fast);
  pointer-events: none;
  z-index: 20;
}

.sequence-item-card__stack:hover .sequence-item-card__hover-indicator,
.sequence-item-card__stack:active .sequence-item-card__hover-indicator {
  opacity: 1;
  pointer-events: auto;
}

/* Show play button on mobile/touch devices */
@media (hover: none) and (pointer: coarse) {
  .sequence-item-card__hover-indicator {
    opacity: 0.7;
    pointer-events: auto;
  }
}

.sequence-item-card__hover-left {
  width: 50%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to right, rgba(239, 68, 68, 0.2), transparent);
  pointer-events: auto;
  cursor: pointer;
}

.sequence-item-card__hover-center {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: auto;
  cursor: pointer;
  color: var(--color-text-inverse);
  z-index: 21;
}

.sequence-item-card__hover-right {
  width: 50%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to left, rgba(16, 185, 129, 0.2), transparent);
  pointer-events: auto;
  cursor: pointer;
}

.sequence-item-card__hover-right--inactive {
  background: linear-gradient(to left, rgba(239, 68, 68, 0.2), transparent);
}

.sequence-item-card__hover-symbol {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-inverse);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.sequence-item-card__content {
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
  z-index: 10;
}

.sequence-item-card__image {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-bg-primary);
  border-radius: var(--radius-lg);
}

.sequence-item-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sequence-item-card__image--inactive img {
  filter: grayscale(100%);
  opacity: 0.5;
}

.sequence-item-card__info {
  text-align: center;
  margin-top: var(--space-2);
}

.sequence-item-card__name {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}

.sequence-item-card__categories {
  display: flex;
  justify-content: center;
  gap: var(--space-1);
  margin-top: var(--space-1);
}

.sequence-item-card__category {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.sequence-item-card__sets {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

/* Completion Card */
.completion-card {
  position: fixed;
  inset: 0;
  background: var(--color-bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transition: all 0.7s ease;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
}

.completion-card__content {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to bottom, var(--color-primary-light), var(--color-bg-primary));
  padding: var(--space-8);
}

.completion-card__icon {
  width: 96px;
  height: 96px;
  margin-bottom: var(--space-6);
  border-radius: var(--radius-full);
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
}

.completion-card__icon svg {
  width: 64px;
  height: 64px;
  color: var(--color-primary);
}

.completion-card__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
  text-align: center;
}

.completion-card__message {
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: var(--space-6);
}

.completion-card__actions {
  display: flex;
  gap: var(--space-4);
}

.completion-button {
  padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-lg);
  font-weight: var(--font-weight-medium);
}

.completion-button:hover {
  box-shadow: var(--shadow-xl);
}

.completion-button--restart {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.completion-button--restart:hover {
  background: var(--color-primary-hover);
}

.completion-button--new {
  background: #3b82f6;
  color: var(--color-text-inverse);
}

.completion-button--new:hover {
  background: #2563eb;
}

/* Utility Classes */
.collapsed-stack {
  transform: scale(0.95);
  opacity: 0.9;
}

.card-transition {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
              opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}