/* ==========================================================================
   PizzaScience — Components
   Cards, sliders, segmented controls, recipe output, timeline, premium locks.
   ========================================================================== */

/* -----------------------------------------------------------------------
   Input Card
   ----------------------------------------------------------------------- */
.input-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: var(--card-shadow);
}

.input-card__title {
  font-size: var(--fs-h3);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
  margin-block-end: var(--space-md);
}

.input-card__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: var(--space-xs);
}

.input-card__row:has(.value-tag),
.input-card__row:has(.hydration-tag) {
  align-items: flex-start;
}

.input-card__value {
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-bold);
  color: var(--color-text);
}

.input-card__range-labels {
  display: flex;
  justify-content: space-between;
  margin-block-start: var(--space-2xs);
  font-size: var(--fs-caption);
  color: var(--color-text-secondary);
}

.input-card__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

/* Two-column sub-grid for Salt & Fat */
.input-card--split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

@media (min-width: 641px) {
  .input-card--split .input-card__row {
    align-items: flex-start;
    min-height: 52px;
  }
}

@media (max-width: 640px) {
  .input-card--split {
    grid-template-columns: 1fr;
  }
}

/* -----------------------------------------------------------------------
   Custom Range Slider
   ----------------------------------------------------------------------- */
.slider {
  -webkit-appearance: none;
  appearance: none;
  inline-size: 100%;
  block-size: var(--slider-thumb-size);
  background: transparent;
  outline: none;
  margin-block: var(--space-xs);
  cursor: pointer;
}

/* Webkit Track */
.slider::-webkit-slider-runnable-track {
  inline-size: 100%;
  block-size: var(--slider-track-height);
  border-radius: var(--radius-full);
  background-color: var(--slider-track-bg, #dcdee1);
  background-image: linear-gradient(
    to right,
    var(--slider-track-fill, #131b2e) var(--progress, 0%),
    transparent var(--progress, 0%)
  );
  border: none;
}

/* Webkit Thumb */
.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  inline-size: var(--slider-thumb-size);
  block-size: var(--slider-thumb-size);
  border-radius: 50%;
  background: var(--slider-thumb-bg);
  border: 2px solid var(--slider-thumb-border);
  box-shadow: var(--slider-thumb-shadow);
  margin-block-start: calc((var(--slider-track-height) - var(--slider-thumb-size)) / 2);
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-bounce),
              border-color var(--duration-fast) var(--ease-default),
              box-shadow var(--duration-fast) var(--ease-default);
}

.slider::-webkit-slider-thumb:hover {
  transform: scale(1.1);
  border-color: var(--color-accent);
}

.slider:active::-webkit-slider-thumb {
  transform: scale(1.2);
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-subtle);
}

.slider:focus-visible::-webkit-slider-thumb {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-subtle);
}

/* Firefox Thumb */
.slider::-moz-range-thumb {
  inline-size: var(--slider-thumb-size);
  block-size: var(--slider-thumb-size);
  border-radius: 50%;
  background: var(--slider-thumb-bg);
  border: 2px solid var(--slider-thumb-border);
  box-shadow: var(--slider-thumb-shadow);
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-bounce),
              border-color var(--duration-fast) var(--ease-default);
}

.slider::-moz-range-thumb:hover {
  transform: scale(1.1);
  border-color: var(--color-accent);
}

.slider:active::-moz-range-thumb {
  transform: scale(1.2);
  border-color: var(--color-accent);
}

.slider:focus-visible::-moz-range-thumb {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-subtle);
}

/* Firefox Track */
.slider::-moz-range-track {
  block-size: var(--slider-track-height);
  border-radius: var(--radius-full);
  background-color: var(--slider-track-bg, #dcdee1);
  background-image: linear-gradient(
    to right,
    var(--slider-track-fill, #131b2e) var(--progress, 0%),
    transparent var(--progress, 0%)
  );
  border: none;
}

.slider::-moz-range-progress {
  block-size: var(--slider-track-height);
  border-radius: var(--radius-full);
  background: transparent;
  border: none;
}

/* -----------------------------------------------------------------------
   Segmented Control
   ----------------------------------------------------------------------- */
.segmented {
  display: flex;
  background-color: var(--seg-bg);
  border-radius: var(--seg-radius);
  padding: 3px;
  gap: 2px;
}

.segmented__btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-regular);
  color: var(--color-text-secondary);
  border-radius: calc(var(--seg-radius) - 2px);
  transition: all var(--duration-normal) var(--ease-default);
  min-block-size: 40px;
}

.segmented__btn:hover:not(.segmented__btn--active) {
  background-color: var(--color-gray-200);
  color: var(--color-text);
}

.segmented__btn--active {
  background-color: var(--seg-active-bg);
  color: var(--color-text);
  font-weight: var(--fw-bold);
  box-shadow: var(--seg-active-shadow);
  border: 1px solid var(--color-border);
}

/* -----------------------------------------------------------------------
   Hydration Tag
   ----------------------------------------------------------------------- */
.hydration-tag,
.value-tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2xs) var(--space-sm);
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-bold);
  border-radius: var(--radius-full);
  background-color: var(--color-accent-subtle);
  color: var(--color-accent-container);
  transition: all var(--duration-normal) var(--ease-default);
  white-space: nowrap;
}

/* -----------------------------------------------------------------------
   Recipe Weight Cards (Bento Grid)
   ----------------------------------------------------------------------- */
.recipe-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--recipe-card-gap);
}

.recipe-card {
  position: relative;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--card-radius);
  overflow: hidden;
}

.recipe-card__icon {
  position: absolute;
  inset-block-start: var(--space-sm);
  inset-inline-end: var(--space-sm);
  font-size: 2rem;
  opacity: 0.12;
  pointer-events: none;
}

.recipe-card__label {
  font-size: var(--fs-caption);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  margin-block-end: var(--space-2xs);
}

.recipe-card__value {
  font-family: var(--font-numeric);
  font-size: var(--fs-numeric);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-tight);
  line-height: 1;
}

.recipe-card__unit {
  font-size: var(--fs-h3);
  font-weight: var(--fw-semibold);
  margin-inline-start: var(--space-2xs);
}

/* Flour card — dark variant */
.recipe-card--flour {
  background-color: var(--recipe-flour-bg);
  color: var(--recipe-flour-text);
  border: 1px solid var(--color-navy-700);
  box-shadow: var(--shadow-md);
}

.recipe-card--flour .recipe-card__label {
  color: var(--recipe-flour-label);
}

.recipe-card--flour .recipe-card__icon {
  color: var(--color-text-on-dark);
}

/* Light cards */
.recipe-card--light {
  background-color: var(--card-bg);
  color: var(--color-text);
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
}

.recipe-card--light .recipe-card__label {
  color: var(--color-text-secondary);
}

/* -----------------------------------------------------------------------
   Fermentation Timeline
   ----------------------------------------------------------------------- */
.timeline {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: var(--card-shadow);
}

.timeline__title {
  font-size: var(--fs-h3);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
  margin-block-end: var(--space-md);
}

.timeline__bar {
  display: flex;
  inline-size: 100%;
  block-size: var(--timeline-height);
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-inner);
  margin-block-end: var(--space-sm);
}

.timeline__segment {
  display: flex;
  align-items: center;
  justify-content: center;
  block-size: 100%;
  position: relative;
  transition: inline-size var(--duration-slow) var(--ease-default);
}

.timeline__segment--bulk {
  background-color: var(--timeline-bulk-bg);
}

.timeline__segment--balled {
  background-color: var(--timeline-balled-bg);
}

.timeline__segment-label {
  font-size: var(--fs-caption);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wide);
  color: var(--color-text-on-dark);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-default);
  white-space: nowrap;
}

.timeline__segment:hover .timeline__segment-label {
  opacity: 1;
}

.timeline__legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: var(--fs-caption);
  color: var(--color-text-secondary);
  margin-block-end: var(--space-lg);
}

.timeline__legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.timeline__legend-dot {
  inline-size: 0.75rem;
  block-size: 0.75rem;
  border-radius: 50%;
  flex-shrink: 0;
}

.timeline__legend-dot--bulk {
  background-color: var(--timeline-bulk-bg);
}

.timeline__legend-dot--balled {
  background-color: var(--timeline-balled-bg);
}

/* -----------------------------------------------------------------------
   Premium Lock Overlay
   ----------------------------------------------------------------------- */
.premium-lock {
  position: relative;
  border-block-start: 1px solid var(--color-border);
  padding-block-start: var(--space-md);
  margin-block-start: var(--space-md);
}

.premium-lock__btn {
  inline-size: 100%;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface-sunken);
  padding: var(--space-md) var(--space-lg);
  text-align: start;
  opacity: 0.65;
  filter: grayscale(40%);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-default);
}

.premium-lock__btn:hover {
  opacity: 0.85;
  filter: grayscale(0%);
  border-color: var(--color-premium);
  box-shadow: 0 0 0 1px var(--color-premium);
}

.premium-lock__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.premium-lock__left {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.premium-lock__icon {
  color: var(--color-text-secondary);
  font-size: 1.5rem;
}

.premium-lock__text-title {
  font-size: var(--fs-body);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
}

.premium-lock__text-desc {
  font-size: var(--fs-caption);
  color: var(--color-text-secondary);
  margin-block-start: 2px;
}

.premium-lock__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: var(--space-2xs) var(--space-sm);
  background: linear-gradient(135deg, var(--color-gold-500), var(--color-gold-400));
  color: var(--color-on-premium);
  font-size: var(--fs-caption);
  font-weight: var(--fw-bold);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

/* -----------------------------------------------------------------------
   Premium Modal (dialog)
   ----------------------------------------------------------------------- */
.premium-modal__inner {
  padding: var(--space-2xl) var(--space-xl);
  text-align: center;
}

.premium-modal__icon {
  font-size: 3rem;
  color: var(--color-premium);
  margin-block-end: var(--space-md);
}

.premium-modal__title {
  font-size: var(--fs-h2);
  font-weight: var(--fw-bold);
  color: var(--color-text);
  margin-block-end: var(--space-xs);
}

.premium-modal__desc {
  font-size: var(--fs-body);
  color: var(--color-text-secondary);
  line-height: var(--lh-relaxed);
  margin-block-end: var(--space-xl);
  max-inline-size: 36ch;
  margin-inline: auto;
}

.premium-modal__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-xl);
  background: linear-gradient(135deg, var(--color-gold-500), var(--color-gold-600));
  color: var(--color-on-premium);
  font-weight: var(--fw-bold);
  font-size: var(--fs-body);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  transition: all var(--duration-normal) var(--ease-default);
}

.premium-modal__cta:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.premium-modal__close {
  display: block;
  margin-block-start: var(--space-md);
  margin-inline: auto;
  font-size: var(--fs-body-sm);
  color: var(--color-text-tertiary);
  padding: var(--space-xs) var(--space-md);
}

.premium-modal__close:hover {
  color: var(--color-text);
}

/* -----------------------------------------------------------------------
   Touch Target Enhancement
   ----------------------------------------------------------------------- */
@media (pointer: coarse) {
  .segmented__btn {
    min-block-size: 48px;
  }

  .slider::-webkit-slider-thumb {
    inline-size: 28px;
    block-size: 28px;
  }

  .slider::-moz-range-thumb {
    inline-size: 28px;
    block-size: 28px;
  }

  .bottom-nav__item {
    min-block-size: 48px;
  }
}

/* ==========================================================================
   PizzaScience — Premium Features Additions
   ========================================================================== */

/* Toggle Switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  inline-size: 50px;
  block-size: 26px;
  flex-shrink: 0;
}

.toggle-switch input {
  opacity: 0;
  inline-size: 0;
  block-size: 0;
}

.toggle-switch__slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: var(--color-gray-300);
  border-radius: var(--radius-full);
  transition: background-color var(--duration-normal) var(--ease-default);
}

.toggle-switch__slider::before {
  content: "";
  position: absolute;
  block-size: 20px;
  inline-size: 20px;
  left: 3px;
  bottom: 3px;
  background-color: var(--color-white);
  border-radius: 50%;
  transition: transform var(--duration-normal) var(--ease-default);
  box-shadow: var(--shadow-sm);
}

.toggle-switch input:checked + .toggle-switch__slider {
  background-color: var(--color-accent);
}

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

.toggle-switch input:focus-visible + .toggle-switch__slider {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Empty State Visuals */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-3xl) var(--space-xl);
  text-align: center;
  background-color: var(--card-bg);
  border: 1px dashed var(--color-border);
  border-radius: var(--card-radius);
  color: var(--color-text-secondary);
  margin-block-start: var(--space-md);
}

.empty-state__icon {
  font-size: 3rem !important;
  color: var(--color-gray-400);
  margin-block-end: var(--space-sm);
  opacity: 0.8;
}

.empty-state__text {
  font-size: var(--fs-body);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
  margin-block-end: var(--space-2xs);
}

.empty-state__subtext {
  font-size: var(--fs-body-sm);
  color: var(--color-text-tertiary);
  max-inline-size: 40ch;
  margin-inline: auto;
}

/* Saved Recipes View */
.recipes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-block-start: var(--space-md);
}

.recipe-item-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-sm);
  transition: transform var(--duration-normal) var(--ease-default), border-color var(--duration-normal) var(--ease-default);
}

.recipe-item-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
}

.recipe-item-card__title {
  font-size: var(--fs-h2);
  font-weight: var(--fw-bold);
  color: var(--color-text);
  word-break: break-word;
}

.recipe-item-card__date {
  font-size: var(--fs-caption);
  color: var(--color-text-tertiary);
  margin-block-end: var(--space-2xs);
}

.recipe-item-card__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-block: var(--space-xs);
}

.recipe-item-card__chip {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2xs) var(--space-xs);
  font-size: var(--fs-caption);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-sm);
  background-color: var(--color-gray-100);
  color: var(--color-text-secondary);
}

.recipe-item-card__chip--accent {
  background-color: var(--color-accent-subtle);
  color: var(--color-accent-hover);
}

.recipe-item-card__yield {
  font-size: var(--fs-body-sm);
  color: var(--color-text-secondary);
  border-block-start: 1px solid var(--color-border-subtle);
  padding-block-start: var(--space-xs);
  margin-block-start: var(--space-2xs);
}

.recipe-item-card__actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
  margin-block-start: var(--space-xs);
}

.btn--text-danger {
  color: var(--color-error);
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-semibold);
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background-color var(--duration-fast);
}

.btn--text-danger:hover {
  background-color: var(--color-red-100);
}

/* Dough Logs Timeline */
.logs-timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  padding-inline-start: var(--space-lg);
  border-inline-start: 2px solid var(--color-border-subtle);
  margin-inline-start: var(--space-sm);
  margin-block-start: var(--space-lg);
}

.log-item {
  position: relative;
}

.log-item::before {
  content: "";
  position: absolute;
  inline-size: 14px;
  block-size: 14px;
  border-radius: 50%;
  background-color: var(--color-white);
  border: 3px solid var(--color-accent);
  left: -28px;
  top: 4px;
  box-shadow: var(--shadow-sm);
}

.log-item-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.log-item-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.log-item-card__title {
  font-size: var(--fs-h2);
  font-weight: var(--fw-bold);
  color: var(--color-text);
}

.log-item-card__rating {
  display: flex;
  color: var(--color-gold-500);
  gap: 2px;
}

.log-item-card__notes {
  background-color: var(--color-gray-25);
  border-left: 3px solid var(--color-accent-container);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--fs-body-sm);
  color: var(--color-text-secondary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  line-height: var(--lh-normal);
  word-break: break-word;
  white-space: pre-wrap;
}

/* Star Rating Input */
.star-rating-input {
  display: flex;
  gap: var(--space-2xs);
  color: var(--color-gray-400);
  margin-block: var(--space-2xs);
}

.star-rating-input .star-btn {
  cursor: pointer;
  font-size: 2rem !important;
  transition: color var(--duration-fast);
}

.star-rating-input .star-btn--selected {
  color: var(--color-gold-500);
  font-variation-settings: 'FILL' 1;
}

.icon-filled {
  font-variation-settings: 'FILL' 1;
}

/* Active Timers View */
.timers-view {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  max-inline-size: 600px;
  margin-inline: auto;
  margin-block-start: var(--space-md);
}

.timer-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: var(--card-shadow);
  transition: all var(--duration-normal) var(--ease-default);
}

.timer-card--active {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent), var(--shadow-lg);
  background-color: var(--color-white);
}

.timer-card--completed {
  border-color: var(--color-success);
  background-color: var(--color-gray-25);
}

.timer-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-block-end: var(--space-sm);
}

.timer-card__phase {
  font-size: var(--fs-body);
  font-weight: var(--fw-bold);
  color: var(--color-text);
}

.timer-card__status-badge {
  font-size: var(--fs-caption);
  font-weight: var(--fw-bold);
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius-full);
  background-color: var(--color-gray-100);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
}

.timer-card--active .timer-card__status-badge {
  background-color: var(--color-accent-subtle);
  color: var(--color-accent-hover);
  animation: pulse-badge 2s infinite ease-in-out;
}

.timer-card--completed .timer-card__status-badge {
  background-color: var(--color-green-100);
  color: var(--color-success);
}

.timer-card__time {
  font-family: var(--font-numeric);
  font-size: clamp(2.5rem, 2rem + 2vw, 3.5rem);
  font-weight: var(--fw-bold);
  color: var(--color-text-secondary);
  text-align: center;
  margin-block: var(--space-md);
  letter-spacing: var(--ls-tight);
}

.timer-card--active .timer-card__time {
  color: var(--color-text);
}

.timer-card__progress-container {
  block-size: 8px;
  background-color: var(--color-gray-100);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-block-end: var(--space-sm);
}

.timer-card__progress-bar {
  block-size: 100%;
  background-color: var(--color-gray-300);
  border-radius: var(--radius-full);
  transition: width 1s linear;
}

.timer-card--active .timer-card__progress-bar {
  background-color: var(--color-accent);
}

.timer-card--completed .timer-card__progress-bar {
  background-color: var(--color-success);
}

.timer-card__duration-info {
  font-size: var(--fs-caption);
  color: var(--color-text-tertiary);
  text-align: end;
}

.timer-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-lg);
}

.timer-controls__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-default);
  box-shadow: var(--shadow-sm);
  inline-size: 48px;
  block-size: 48px;
  background-color: var(--color-surface);
  color: var(--color-text-secondary);
}

.timer-controls__btn span {
  font-size: 1.5rem !important;
}

.timer-controls__btn--play, .timer-controls__btn--pause {
  inline-size: 60px;
  block-size: 60px;
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  border: none;
}

.timer-controls__btn--play span, .timer-controls__btn--pause span {
  font-size: 2rem !important;
}

.timer-controls__btn--play:hover, .timer-controls__btn--pause:hover {
  filter: brightness(1.1);
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}

.timer-controls__btn--reset:hover, .timer-controls__btn--skip:hover {
  background-color: var(--color-gray-50);
  color: var(--color-text);
  transform: scale(1.05);
}

@keyframes pulse-badge {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* -----------------------------------------------------------------------
   Science Explained Styles
   ----------------------------------------------------------------------- */
.science-container {
  max-inline-size: 800px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  padding-block-end: var(--space-xl);
}

.science-intro-card {
  background: linear-gradient(135deg, var(--color-surface), var(--color-surface-sunken));
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: var(--card-shadow);
}

.science-intro-card__text {
  font-size: var(--fs-body);
  line-height: var(--lh-relaxed);
  color: var(--color-text-secondary);
  margin-block-end: var(--space-md);
}

.science-intro-card__book {
  font-size: var(--fs-body-sm);
  line-height: var(--lh-normal);
  color: var(--color-text-tertiary);
  border-block-start: 1px solid var(--color-border-subtle);
  padding-block-start: var(--space-md);
}

.science-intro-card__book-link {
  font-weight: var(--fw-semibold);
  text-decoration: underline;
  color: var(--color-accent);
}

.science-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.science-card__header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.science-card__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 2rem;
  block-size: 2rem;
  background-color: var(--color-accent-subtle);
  color: var(--color-accent-container);
  border-radius: var(--radius-full);
  font-weight: var(--fw-bold);
  font-size: var(--fs-body-sm);
}

.science-card__title {
  font-size: var(--fs-h2);
  font-weight: var(--fw-bold);
  color: var(--color-text);
}

.science-card__intro {
  font-size: var(--fs-body);
  color: var(--color-text-secondary);
  line-height: var(--lh-normal);
  margin-block-end: var(--space-sm);
}

.science-card__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.science-card__list li {
  font-size: var(--fs-body-sm);
  line-height: var(--lh-relaxed);
  color: var(--color-text-secondary);
  position: relative;
  padding-inline-start: var(--space-md);
}

.science-card__list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: var(--fw-bold);
}

.science-card__highlight {
  color: var(--color-text);
  font-weight: var(--fw-semibold);
}

.science-footer {
  padding-block-start: var(--space-xl);
  border-block-start: 1px solid var(--color-border-subtle);
  margin-block-start: var(--space-xl);
}

.science-book-card {
  background: linear-gradient(135deg, var(--color-premium-subtle), var(--color-white));
  border: 1px solid var(--color-gold-400);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  text-align: start;
  transition: transform var(--duration-normal) var(--ease-default), box-shadow var(--duration-normal) var(--ease-default);
}

.science-book-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-premium);
}

.science-book-card__icon {
  font-size: 2.5rem !important;
  color: var(--color-gold-600);
  flex-shrink: 0;
}

.science-book-card__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-3xs);
}

.science-book-card__title {
  font-size: var(--fs-body);
  font-weight: var(--fw-bold);
  color: var(--color-navy-900);
  margin: 0;
}

.science-book-card__text {
  font-size: var(--fs-body-sm);
  color: var(--color-gray-700);
  line-height: var(--lh-relaxed);
  margin: 0;
}

.science-book-card__link {
  font-weight: var(--fw-bold);
  color: var(--color-gold-600);
  text-decoration: underline;
  transition: color var(--duration-fast);
}

.science-book-card__link:hover {
  color: var(--color-gold-500);
}

@media (max-width: 480px) {
  .science-book-card {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }
}

/* -----------------------------------------------------------------------
   Premium Locked Section
   ----------------------------------------------------------------------- */
.premium-locked-section {
  opacity: 0.45;
  pointer-events: none;
  user-select: none;
  transition: opacity var(--duration-normal) var(--ease-default);
}

/* -----------------------------------------------------------------------
   Auth Modals (Login/Signup & Profile)
   ----------------------------------------------------------------------- */
#auth-modal,
#profile-modal {
  max-inline-size: 400px;
}

.auth-modal__inner,
.profile-modal__inner {
  position: relative;
  box-sizing: border-box;
}

.modal-close-btn {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--color-text-secondary);
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background-color var(--duration-fast);
}

.modal-close-btn:hover {
  background-color: var(--color-surface-sunken);
  color: var(--color-text);
}

.auth-form {
  display: flex;
  flex-direction: column;
}

.auth-form h2,
.auth-form > p {
  text-align: center;
}

.auth-form__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-block-end: var(--space-lg);
}

.auth-form__field {
  display: flex;
  flex-direction: column;
  gap: var(--space-3xs);
}

.auth-form__field label {
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
}

.auth-form__field input {
  padding: var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--fs-body);
  background-color: var(--color-surface);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--duration-fast);
}

.auth-form__field input:focus {
  border-color: var(--color-accent);
}

.auth-error {
  color: var(--color-error);
  font-size: var(--fs-body-sm);
  margin-block-end: var(--space-md);
  display: none;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-md);
  background-color: var(--color-accent-subtle);
  border: 1px solid var(--color-accent);
}

/* --- Premium Modal Redesign --- */
#premium-modal {
  max-inline-size: 680px; /* Wider modal for 3 columns */
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-block-end: var(--space-xl);
  margin-block-start: var(--space-lg);
}

@media (min-width: 480px) {
  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
    align-items: stretch;
  }
}

.pricing-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--space-lg) var(--space-md);
  border-radius: var(--card-radius);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface-sunken);
  transition: all var(--duration-normal) var(--ease-default);
}

.pricing-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-hover);
}

.pricing-card--popular {
  border: 2px solid var(--color-gold-500);
  background-color: var(--color-surface);
  box-shadow: var(--shadow-md);
}

.pricing-card--popular:hover {
  border-color: var(--color-gold-500);
  box-shadow: var(--shadow-lg);
}

.pricing-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-gold-500), var(--color-gold-600));
  color: var(--color-on-premium);
  font-size: var(--fs-caption);
  font-weight: var(--fw-bold);
  padding: var(--space-3xs) var(--space-sm);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.pricing-card__title {
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text-secondary);
  margin-block-end: var(--space-3xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pricing-card__price-container {
  margin-block: var(--space-sm);
}

.pricing-card__price {
  font-size: 1.75rem;
  font-weight: var(--fw-bold);
  color: var(--color-text);
  font-family: var(--font-numeric);
}

.pricing-card__period {
  font-size: var(--fs-caption);
  color: var(--color-text-secondary);
  display: block;
  margin-block-start: 2px;
}

.pricing-card__btn {
  width: 100%;
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-bold);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-default);
  min-block-size: 40px;
}

.pricing-card__btn:hover {
  background-color: var(--color-surface-hover);
  border-color: var(--color-border-hover);
}

.pricing-card--popular .pricing-card__btn {
  background: linear-gradient(135deg, var(--color-gold-500), var(--color-gold-600));
  color: var(--color-on-premium);
  border: none;
}

.pricing-card--popular .pricing-card__btn:hover {
  filter: brightness(1.1);
}

/* -----------------------------------------------------------------------
   Legal Pages (Terms, Privacy)
   ----------------------------------------------------------------------- */
.legal-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: var(--card-shadow);
}

.legal-card__title {
  font-size: var(--fs-h2);
  margin-block-end: var(--space-md);
  color: var(--color-text);
}

.legal-card__subtitle {
  font-size: var(--fs-body-sm);
  color: var(--color-text-secondary);
  margin-block-end: var(--space-lg);
  border-block-end: 1px solid var(--color-border-subtle);
  padding-block-end: var(--space-sm);
}

.legal-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  line-height: var(--lh-relaxed);
  color: var(--color-text);
}

.legal-content h3 {
  font-size: var(--fs-h3);
  margin-block-start: var(--space-md);
  color: var(--color-text);
}

.legal-content ul {
  list-style: disc;
  padding-inline-start: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.legal-content li {
  text-wrap: pretty;
}

/* -----------------------------------------------------------------------
   Pill Toggle Buttons
   ----------------------------------------------------------------------- */
.toggle-group {
  display: flex;
  gap: 4px;
}

.pill-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: var(--space-2xs) var(--space-sm);
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text-secondary);
  background-color: var(--color-surface-sunken);
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-default);
  border: none;
  cursor: pointer;
}

.pill-btn:hover {
  background-color: var(--color-gray-200);
  color: var(--color-text);
}

.pill-btn--active {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
}