/* === Dashboard Layout === */
.dashboard {
  padding-top: var(--space-6);
  padding-bottom: var(--space-16);
}

/* === Stats Bar === */
.stats-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  padding: var(--space-4) 0;
  margin-bottom: var(--space-4);
}

.stats-bar__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: var(--font-bold);
  font-size: var(--text-base);
}

.stats-bar__icon {
  font-size: var(--text-xl);
}

.stats-bar__streak {
  color: var(--color-warning);
}

.stats-bar__streak .stats-bar__icon {
  animation: streakFlame 2s ease-in-out infinite;
  display: inline-block;
}

.stats-bar__xp {
  color: var(--color-gold);
}

.stats-bar__level {
  color: var(--color-primary);
}

/* === Daily Goal === */
.daily-goal {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-4) var(--space-6);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
}

.daily-goal__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
}

.daily-goal__title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.daily-goal__value {
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  color: var(--color-text);
}

/* === Action Buttons === */
.action-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4);
  border-radius: var(--radius-xl);
  font-weight: var(--font-bold);
  font-size: var(--text-base);
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.action-btn--continue {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 4px 0 var(--color-primary-dark);
}

.action-btn--continue:hover {
  background: var(--color-primary-light);
}

.action-btn--continue:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 var(--color-primary-dark);
}

.action-btn--review {
  background: var(--color-white);
  color: var(--color-primary);
  border: var(--border-width) solid var(--color-primary);
  box-shadow: 0 4px 0 var(--color-primary-200);
  position: relative;
}

.action-btn--review:hover {
  background: var(--color-primary-50);
}

.action-btn--review:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 var(--color-primary-200);
}

.action-btn__badge {
  position: absolute;
  top: -6px;
  right: -6px;
}

/* === Skill Tree === */
.skill-tree {
  display: flex;
  flex-direction: column;
  gap: var(--space-10);
}

/* === Unit === */
.unit {
  animation: fadeInUp 500ms var(--ease-out-expo) both;
}

.unit__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  padding: var(--space-3) var(--space-4);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  border-left: 4px solid var(--color-primary);
}

.unit__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.unit__info {
  flex: 1;
}

.unit__title {
  font-size: var(--text-base);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
}

.unit__subtitle {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.unit__progress-text {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: var(--font-semibold);
}

/* === Lesson Nodes (Path) === */
.lesson-path {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  position: relative;
}

/* Connector line between nodes */
.lesson-path::before {
  content: '';
  position: absolute;
  top: 30px;
  bottom: 30px;
  left: 50%;
  width: 3px;
  background: var(--color-border);
  transform: translateX(-50%);
  z-index: 0;
  border-radius: var(--radius-full);
}

.lesson-node {
  position: relative;
  z-index: var(--z-base);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  transition: transform 200ms var(--ease-spring);
}

.lesson-node:hover {
  transform: scale(1.05);
}

.lesson-node:nth-child(odd) {
  transform: translateX(-30px);
}

.lesson-node:nth-child(even) {
  transform: translateX(30px);
}

.lesson-node:nth-child(odd):hover {
  transform: translateX(-30px) scale(1.05);
}

.lesson-node:nth-child(even):hover {
  transform: translateX(30px) scale(1.05);
}

.lesson-node__circle {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: var(--font-extrabold);
  border: 3px solid;
  transition: all 300ms var(--ease-spring);
  position: relative;
}

.lesson-node__circle::after {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  transition: border-color var(--transition-base);
}

/* Node States */
.lesson-node--locked .lesson-node__circle {
  background: var(--color-bg-input);
  border-color: var(--color-border);
  color: var(--color-text-muted);
}

.lesson-node--locked {
  cursor: not-allowed;
  opacity: 0.6;
}

.lesson-node--available .lesson-node__circle {
  background: var(--color-white);
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: var(--shadow-md), 0 0 0 4px var(--color-primary-50);
  animation: nodePulse 2s ease-in-out infinite;
}

.lesson-node--completed .lesson-node__circle {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.lesson-node--perfect .lesson-node__circle {
  background: linear-gradient(135deg, var(--color-gold), #E8C35A);
  border-color: var(--color-gold);
  color: var(--color-white);
  box-shadow: 0 0 12px rgba(212, 168, 67, 0.3);
}

.lesson-node__title {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-text-secondary);
  max-width: 100px;
  text-align: center;
  line-height: var(--leading-tight);
}

.lesson-node--locked .lesson-node__title {
  color: var(--color-text-muted);
}

/* === Welcome Section === */
.welcome {
  text-align: center;
  padding: var(--space-8) 0;
  margin-bottom: var(--space-4);
}

.welcome__title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-2);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.welcome__subtitle {
  color: var(--color-text-secondary);
  font-size: var(--text-lg);
}

/* === Ornament Banner === */
.ornament-banner {
  width: 100%;
  height: 6px;
  background: repeating-linear-gradient(
    90deg,
    var(--color-primary) 0px,
    var(--color-primary) 8px,
    transparent 8px,
    transparent 12px,
    var(--color-primary-light) 12px,
    var(--color-primary-light) 16px,
    transparent 16px,
    transparent 20px
  );
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
  opacity: 0.6;
}

/* ============================================================
   Micro-Review Overlay
   ============================================================ */

.micro-review {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  transition: opacity 300ms ease;
}

.micro-review--visible {
  opacity: 1;
}

.micro-review--exiting {
  opacity: 0;
  transition: opacity 400ms ease;
}

.micro-review__container {
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  max-width: 380px;
  width: 100%;
  box-shadow: var(--shadow-xl);
  animation: modalContentIn 300ms var(--ease-out-back) both;
}

.micro-review--exiting .micro-review__container {
  animation: none;
  transform: scale(0.95);
  transition: transform 300ms ease;
}

.micro-review__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
}

.micro-review__title {
  font-weight: var(--font-bold);
  font-size: var(--text-base);
  color: var(--color-text);
}

.micro-review__counter {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: var(--font-semibold);
}

.micro-review__progress {
  width: 100%;
  height: 4px;
  background: var(--color-bg-input);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
  overflow: hidden;
}

.micro-review__progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width 400ms var(--ease-out-expo);
}

.micro-review__card {
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-white) 100%);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  cursor: pointer;
  transition: border-color 300ms ease, box-shadow 300ms ease, transform 200ms ease;
  position: relative;
  overflow: hidden;
}

.micro-review__card:hover {
  border-color: var(--color-primary-200);
  box-shadow: var(--shadow-md);
}

.micro-review__card--flipped {
  border-color: var(--color-primary);
}

.micro-review__card--correct {
  border-color: var(--color-success);
  background: var(--color-success-light);
  animation: correctPulse 400ms ease;
}

.micro-review__card--wrong {
  border-color: var(--color-error);
  background: var(--color-error-light);
  animation: wrongShake 500ms ease;
}

.micro-review__card-inner {
  text-align: center;
  padding: var(--space-4);
  width: 100%;
}

.micro-review__card-inner--revealed .micro-review__card-front {
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: var(--space-3);
}

.micro-review__word {
  display: block;
  font-size: var(--text-3xl);
  font-weight: var(--font-extrabold);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.micro-review__hint {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.micro-review__card-answer {
  animation: fadeInUp 300ms var(--ease-out-expo) both;
}

.micro-review__answer-text {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-primary);
}

.micro-review__actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.micro-review__btn {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-weight: var(--font-bold);
  font-size: var(--text-base);
  border: 2px solid;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.micro-review__btn--know {
  background: var(--color-success);
  border-color: var(--color-success-dark);
  color: var(--color-white);
  box-shadow: 0 3px 0 var(--color-success-dark);
}

.micro-review__btn--know:hover {
  background: #2dd36f;
}

.micro-review__btn--know:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 var(--color-success-dark);
}

.micro-review__btn--forgot {
  background: var(--color-white);
  border-color: var(--color-error);
  color: var(--color-error);
  box-shadow: 0 3px 0 var(--color-error-light);
}

.micro-review__btn--forgot:hover {
  background: var(--color-error-light);
}

.micro-review__btn--forgot:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 var(--color-error-light);
}

.micro-review__reveal {
  width: 100%;
  padding: var(--space-3);
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-lg);
  font-weight: var(--font-bold);
  font-size: var(--text-base);
  cursor: pointer;
  box-shadow: 0 3px 0 var(--color-primary-dark);
  transition: all var(--transition-fast);
  margin-bottom: var(--space-3);
}

.micro-review__reveal:hover {
  background: var(--color-primary-light);
}

.micro-review__reveal:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 var(--color-primary-dark);
}

.micro-review__skip {
  width: 100%;
  padding: var(--space-2);
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.micro-review__skip:hover {
  color: var(--color-text-secondary);
}

/* ============================================================
   Heritage Counter ("Письмо потомкам")
   ============================================================ */

.heritage-counter {
  margin-bottom: var(--space-4);
  animation: fadeInUp 500ms var(--ease-out-expo) both;
  animation-delay: 100ms;
}

.heritage-counter__inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg,
    rgba(196, 30, 58, 0.04) 0%,
    rgba(212, 168, 67, 0.06) 50%,
    rgba(46, 134, 171, 0.04) 100%
  );
  border: 1px solid rgba(196, 30, 58, 0.1);
  position: relative;
  overflow: hidden;
}

.heritage-counter__inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg,
    var(--color-primary),
    var(--color-gold),
    #2E86AB,
    var(--color-primary)
  );
  opacity: 0.5;
}

.heritage-counter__icon {
  font-size: 1.75rem;
  flex-shrink: 0;
}

.heritage-counter__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.heritage-counter__text strong {
  color: var(--color-text);
}

.heritage-counter__count {
  color: var(--color-primary) !important;
  font-size: var(--text-base);
}

/* ============================================================
   Daily Challenge
   ============================================================ */

#daily-challenge {
  margin-bottom: var(--space-6);
  animation: fadeInUp 500ms var(--ease-out-expo) both;
  animation-delay: 150ms;
}

.daily-challenge__card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  border: 2px dashed var(--color-primary-200);
  position: relative;
  overflow: hidden;
  transition: border-color 300ms ease, background 300ms ease;
}

.daily-challenge__card--done {
  border-color: var(--color-success);
  border-style: solid;
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-success-light) 100%);
}

.daily-challenge__header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.daily-challenge__icon {
  font-size: 1.4rem;
}

.daily-challenge__label {
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.daily-challenge__text {
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-3);
  font-weight: var(--font-medium);
}

.daily-challenge__hint {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  margin-bottom: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  animation: fadeInUp 200ms var(--ease-out-expo) both;
}

.daily-challenge__hint-label {
  font-weight: var(--font-semibold);
  color: var(--color-text-muted);
}

.daily-challenge__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.daily-challenge__hint-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  cursor: pointer;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.daily-challenge__hint-btn:hover {
  background: var(--color-bg);
  color: var(--color-text-secondary);
}

.daily-challenge__check {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-secondary);
  user-select: none;
}

.daily-challenge__check input[type="checkbox"] {
  display: none;
}

.daily-challenge__checkmark {
  width: 22px;
  height: 22px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  position: relative;
}

.daily-challenge__check input:checked + .daily-challenge__checkmark {
  background: var(--color-success);
  border-color: var(--color-success);
}

.daily-challenge__check input:checked + .daily-challenge__checkmark::after {
  content: '\2713';
  color: var(--color-white);
  font-size: 14px;
  font-weight: bold;
}

.daily-challenge__check input:checked ~ span:last-child {
  color: var(--color-success);
}

/* ============================================================
   Redesigned Skill Tree — Discovery Metaphor
   ============================================================ */

/* Unit icon glow/pulse for available lessons */
.unit__icon--glow {
  animation: unitIconGlow 2.5s ease-in-out infinite;
  position: relative;
}

@keyframes unitIconGlow {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(196, 30, 58, 0);
    filter: brightness(1);
  }
  50% {
    box-shadow: 0 0 16px 4px color-mix(in srgb, var(--unit-glow-color, var(--color-primary)) 25%, transparent);
    filter: brightness(1.1);
  }
}

/* Discovery count label */
.unit__discovery {
  font-size: var(--text-xs);
  color: var(--color-primary);
  font-weight: var(--font-semibold);
  margin-top: 2px;
  opacity: 0.8;
}

/* Progress ring (replaces text-only counter) */
.unit__progress-ring {
  width: 42px;
  height: 42px;
  position: relative;
  flex-shrink: 0;
}

.unit__progress-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.unit__progress-bg {
  stroke: var(--color-bg-input);
}

.unit__progress-fill-ring {
  transition: stroke-dasharray 600ms var(--ease-out-expo);
  stroke-linecap: round;
}

.unit__progress-ring .unit__progress-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: var(--font-bold);
  color: var(--color-text-muted);
}

/* Locked node discovery style — "?" instead of lock */
.lesson-node--locked .lesson-node__circle {
  font-size: 20px;
  font-style: italic;
  font-weight: var(--font-bold);
  color: var(--color-text-muted);
  background: var(--color-bg-input);
  border-color: var(--color-border);
  border-style: dashed;
}

.lesson-node--locked .lesson-node__title {
  font-style: italic;
  letter-spacing: 0.05em;
}

/* Connecting ornamental line between units */
.unit-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: var(--space-2) 0;
  margin: calc(-1 * var(--space-4)) 0;
}

.unit-connector__line {
  flex: 1;
  height: 2px;
  background: repeating-linear-gradient(
    90deg,
    var(--color-primary-200) 0px,
    var(--color-primary-200) 6px,
    transparent 6px,
    transparent 10px,
    var(--color-primary-100) 10px,
    var(--color-primary-100) 12px,
    transparent 12px,
    transparent 16px
  );
  opacity: 0.7;
}

.unit-connector__ornament {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  opacity: 0.35;
  flex-shrink: 0;
}

/* Lesson path connector override — pattern line */
.lesson-path::before {
  background: repeating-linear-gradient(
    180deg,
    var(--color-border) 0px,
    var(--color-border) 8px,
    transparent 8px,
    transparent 14px,
    var(--color-primary-100) 14px,
    var(--color-primary-100) 18px,
    transparent 18px,
    transparent 24px
  );
  opacity: 0.6;
}

/* ============================================================
   Proverb of the Day ("Пословица дня")
   ============================================================ */

#daily-proverb {
  margin-bottom: var(--space-6);
  animation: fadeInUp 500ms var(--ease-out-expo) both;
  animation-delay: 200ms;
}

.proverb-card {
  background: linear-gradient(135deg, #FFFDF5 0%, #FFF9E6 50%, #FFF5D6 100%);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(212, 168, 67, 0.25);
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(212, 168, 67, 0.1);
}

.proverb-card__ornament-top,
.proverb-card__ornament-bottom {
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--color-gold) 0px,
    var(--color-gold) 6px,
    transparent 6px,
    transparent 10px,
    rgba(212, 168, 67, 0.4) 10px,
    rgba(212, 168, 67, 0.4) 14px,
    transparent 14px,
    transparent 18px,
    var(--color-gold) 18px,
    var(--color-gold) 20px,
    transparent 20px,
    transparent 28px
  );
  opacity: 0.6;
}

.proverb-card__content {
  padding: var(--space-5) var(--space-6);
}

.proverb-card__quote-icon {
  color: var(--color-gold);
  opacity: 0.5;
  margin-bottom: var(--space-2);
}

.proverb-card__text {
  font-size: var(--text-lg);
  font-style: italic;
  font-weight: var(--font-medium);
  color: var(--color-text);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-3);
  position: relative;
  padding-left: var(--space-4);
  border-left: 3px solid var(--color-gold);
}

.proverb-card__meaning {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-3);
  padding-left: var(--space-4);
}

.proverb-card__footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.proverb-card__label {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-gold);
  opacity: 0.8;
}