:root {
  color-scheme: light;
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-muted: #f0f1f5;
  --text: #111320;
  --text-muted: #5c6070;
  --primary: #4c6ef5;
  --primary-dark: #364fc7;
  --border: #e2e5ef;
  --accent: #f59f00;
}

[data-theme='dark'] {
  color-scheme: dark;
  --bg: #0f1118;
  --surface: #181b25;
  --surface-muted: #232737;
  --text: #f6f7fb;
  --text-muted: #a2a8c4;
  --primary: #91a7ff;
  --primary-dark: #748ffc;
  --border: #2c3145;
  --accent: #ffd43b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-wrap: anywhere;
}

.page-tabs {
  display: flex;
  gap: 0.75rem;
  padding: 1rem clamp(1rem, 5vw, 4rem);
  flex-wrap: wrap;
  align-items: center;
}

.page-tab__group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-tab {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.5rem 1.2rem;
  font-weight: 600;
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
}

.page-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.page-tab--view {
  cursor: pointer;
  background: var(--surface-muted);
}

.page-tab--soon {
  background: var(--surface-muted);
  color: var(--text-muted);
}

button.page-tab {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font: inherit;
}

h1,
h2,
h3 {
  margin: 0 0 0.5rem;
}

p {
  margin: 0 0 0.75rem;
}

header.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  padding: 2.5rem clamp(1rem, 5vw, 4rem);
}

.page-view {
  display: none;
}

.page-view.active {
  display: block;
}

.coming-soon-card {
  margin: 0 clamp(1rem, 5vw, 4rem);
  margin-top: -1rem;
  margin-bottom: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1rem 1.5rem;
  color: var(--text-muted);
}

.coming-soon-card a {
  color: var(--primary-dark);
  text-decoration: none;
}

.hero__content {
  max-width: 560px;
}

.hero__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.theme-toggle {
  min-width: auto;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-muted);
  color: var(--text);
  padding: 0.4rem 0.9rem;
  font-weight: 600;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.hero__actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.hero__panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 15px 35px rgba(15, 17, 24, 0.08);
}

.hero__question {
  font-weight: 600;
}

.hero__answer {
  cursor: pointer;
  color: var(--primary-dark);
}

.hero__question,
.hero__answer,
.flashcard__text,
.quiz-card__text,
.quiz-card__answer {
  word-break: break-word;
}

main {
  padding: 0 clamp(1rem, 5vw, 4rem) 4rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.mode-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.mode-btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  padding: 0.5rem 1.2rem;
  font-weight: 600;
  cursor: pointer;
}

.mode-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.mode {
  display: none;
  flex-direction: column;
  gap: 1.5rem;
}

.mode.active {
  display: flex;
}

.filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.25rem;
}

.filters label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.filters input,
.filters select {
  padding: 0.65rem 0.8rem;
  border-radius: 0.6rem;
  border: 1px solid var(--border);
  background: var(--surface-muted);
  color: inherit;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 1rem;
}

.topic-breakdown {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  padding: 1rem;
}

.topic-breakdown h3 {
  margin: 0 0 0.5rem;
}

.topic-breakdown__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.topic-chip {
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  background: var(--surface-muted);
  font-size: 0.85rem;
}

.topic-chip--full {
  background: var(--primary);
  color: #fff;
}

.favorites-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.favorites-panel__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.favorites-panel__badge {
  min-width: 2.5rem;
  text-align: center;
  border-radius: 999px;
  border: 1px solid var(--border);
  padding: 0.4rem 0.75rem;
  font-weight: 600;
  background: var(--surface-muted);
}

.favorites-panel__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.favorite-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.2rem 0.2rem 0.2rem 0.8rem;
  background: var(--surface-muted);
}

.favorite-chip__focus {
  border: none;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
  padding: 0;
}

.favorite-chip__focus:hover,
.favorite-chip__focus:focus-visible {
  color: var(--primary);
}

.favorite-chip__remove {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.1rem 0.4rem;
  border-radius: 999px;
}

.favorite-chip__remove:hover,
.favorite-chip__remove:focus-visible {
  color: #e03131;
  background: rgba(224, 49, 49, 0.08);
}

.favorites-empty {
  color: var(--text-muted);
  margin: 0;
}

.resources-hero {
  padding: 2.5rem clamp(1rem, 5vw, 4rem);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.resources-hero__text {
  max-width: 720px;
}

.resources-search {
  margin-top: 1.2rem;
}

.resources-search label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.resources-search input {
  padding: 0.65rem 0.8rem;
  border-radius: 0.8rem;
  border: 1px solid var(--border);
  background: var(--surface-muted);
  color: inherit;
}

.resources-search input::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

.resources-hero__cta {
  margin-top: 1.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.cta-telegram {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--primary);
  color: #fff;
  border: none;
  padding-inline: 1.2rem;
}

.cta-telegram svg {
  flex-shrink: 0;
}

.resources-layout {
  display: flex;
  gap: 1.5rem;
  padding: 2rem clamp(1rem, 5vw, 4rem) 3rem;
}

.resources-nav {
  flex: 0 0 240px;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  position: sticky;
  top: 1rem;
  max-height: calc(100vh - 2rem);
  overflow-y: auto;
}

.resource-pill {
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  background: var(--surface);
  color: var(--text);
  padding: 0.6rem 0.9rem;
  text-align: left;
  cursor: pointer;
  font-weight: 600;
}

.resource-pill.active {
  border-color: var(--primary);
  background: rgba(76, 110, 245, 0.12);
  color: var(--primary-dark);
}

.resources-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.resource-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1.2rem;
  padding: 1.3rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  box-shadow: 0 15px 35px rgba(15, 17, 24, 0.08);
}

.resource-card summary {
  list-style: none;
  cursor: pointer;
  display: block;
}

.resource-card summary::-webkit-details-marker {
  display: none;
}

.resource-card summary p {
  margin: 0;
}

.resource-card summary h3 {
  margin: 0.2rem 0 0;
}

.resource-card__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.resource-subcard {
  border: 1px dashed var(--border);
  border-radius: 1rem;
  padding: 1rem;
  background: var(--surface-muted);
  margin-top: 0.75rem;
}

.resource-subcard h4 {
  margin: 0 0 0.5rem;
}

.resource-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.resource-links li a {
  font-weight: 600;
  color: var(--primary-dark);
  text-decoration: none;
}

.resource-links li p {
  margin: 0.2rem 0 0;
  color: var(--text-muted);
}

.resources-empty {
  padding: 2rem;
  color: var(--text-muted);
}

@media (max-width: 1024px) {
  .resources-layout {
    flex-direction: column;
  }

  .resources-nav {
    position: static;
    max-height: none;
    flex: auto;
    flex-wrap: wrap;
    flex-direction: row;
    gap: 0.5rem;
  }

  .resource-pill {
    flex: 1 1 180px;
  }
}

.stat__item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  padding: 1rem;
}

.stat__value {
  font-size: 2rem;
  font-weight: 600;
}

.stat__label {
  color: var(--text-muted);
}

.question-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.question-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.question-card__text {
  line-height: 1.5;
  word-break: break-word;
}

.code-block {
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  padding: 0.85rem;
  margin: 0.75rem 0;
  font-family: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
  font-size: 0.9rem;
  line-height: 1.4;
  white-space: pre-wrap;
  overflow-x: auto;
}

.option-list {
  margin: 0.35rem 0 0.75rem;
  padding-left: 1.25rem;
  color: var(--text);
  word-break: break-word;
}

.option-list li {
  list-style: none;
  display: flex;
  gap: 0.4rem;
  margin: 0.15rem 0;
  flex-wrap: wrap;
}

.option-key {
  font-weight: 600;
  color: var(--primary-dark);
}

.question-card__answer {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.question-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.question-card--favorite {
  border-color: var(--primary);
  box-shadow: 0 15px 30px rgba(76, 110, 245, 0.15);
}

.favorite-toggle--active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.question-card--highlight {
  animation: question-card-highlight 1.2s ease;
}

@keyframes question-card-highlight {
  0% {
    box-shadow: 0 0 0 rgba(76, 110, 245, 0);
  }
  50% {
    box-shadow: 0 0 30px rgba(76, 110, 245, 0.35);
  }
  100% {
    box-shadow: none;
  }
}

.question-card__answer-label {
  font-weight: 600;
  color: var(--text-muted);
  margin: 0;
}

.answer-mask {
  padding: 0.6rem;
  border-radius: 0.6rem;
  background: var(--surface-muted);
  filter: blur(10px);
  transition: filter 0.2s ease;
  word-break: break-word;
}

.answer-mask--revealed {
  filter: none;
}

.answer-toggle {
  align-self: flex-start;
  margin-top: 0.1rem;
}

.question-card header {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.1rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  background: var(--surface-muted);
  color: var(--text-muted);
}

.badge.primary {
  background: rgba(76, 110, 245, 0.12);
  color: var(--primary-dark);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag-list span {
  font-size: 0.75rem;
  padding: 0.1rem 0.5rem;
  border-radius: 0.5rem;
  background: var(--surface-muted);
}

.flashcards {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.flashcard {
  background: var(--surface-muted);
  border-radius: 0.9rem;
  padding: 1rem;
  min-height: 220px;
}

.flashcard__controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-end;
}

.flashcard__controls label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.flashcard__controls select {
  padding: 0.55rem 0.9rem;
  border-radius: 0.7rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}

.flashcard__hint {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex: 1;
  min-width: 200px;
}

.flashcard__label {
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.flashcard__text {
  min-height: 60px;
}

.flashcard__answer {
  color: var(--primary-dark);
}

.flashcard__actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn {
  border: none;
  border-radius: 0.8rem;
  padding: 0.65rem 1.2rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.1s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn.primary {
  background: var(--primary);
  color: #fff;
}

.btn.secondary {
  background: var(--surface-muted);
  color: var(--text);
}

.btn.ghost {
  background: transparent;
  border: 1px solid var(--border);
}

.btn.link {
  text-decoration: none;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.btn.link:hover {
  border-color: var(--primary);
}

.btn.success {
  background: #2f9e44;
  color: #fff;
}

.btn.danger {
  background: #e03131;
  color: #fff;
}

.quiz {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.quiz-card {
  background: var(--surface-muted);
  border-radius: 0.9rem;
  padding: 1rem;
}

.quiz-card__text {
  min-height: 120px;
  margin-bottom: 0.5rem;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 0.5rem 0;
}

.quiz-option {
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  padding: 0.5rem 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  background: var(--surface);
}

.quiz-option.selected {
  border-color: var(--primary);
  background: rgba(76, 110, 245, 0.08);
}

.quiz-option.correct {
  border-color: #2f9e44;
}

.quiz-option.incorrect {
  border-color: #e03131;
}

.quiz-option__label {
  font-weight: 600;
  margin-right: 0.5rem;
}

.quiz-card__label {
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.quiz-card__answer {
  color: var(--primary-dark);
  min-height: 60px;
  cursor: pointer;
  text-decoration: underline;
  text-decoration-style: dotted;
}

.quiz-answer--revealed {
  cursor: default;
  text-decoration: none;
}

.quiz-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.quiz-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.75rem;
}

.quiz-stat__value {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0;
}

.quiz-stat__label {
  margin: 0;
  color: var(--text-muted);
}

.page-view--sprint {
  padding-bottom: 4rem;
}

.sprint-hero {
  padding: 2.5rem clamp(1rem, 5vw, 4rem);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  align-items: start;
}

.sprint-hero__intro {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.sprint-hero__tips {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.sprint-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1.2rem;
  padding: 1.5rem;
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.sprint-form__title {
  margin: 0;
  font-weight: 600;
}

.sprint-form label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.sprint-form input,
.sprint-form select,
.sprint-form textarea {
  border: 1px solid var(--border);
  border-radius: 0.7rem;
  padding: 0.6rem 0.75rem;
  background: var(--surface-muted);
  color: inherit;
  font: inherit;
}

.sprint-form textarea {
  resize: vertical;
}

.sprint-form__full {
  grid-column: 1 / -1;
}

.sprint-form button[type='submit'] {
  justify-self: flex-start;
}

.sprint-board-wrapper {
  padding: 0 clamp(1rem, 5vw, 4rem);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.sprint-board__controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--text-muted);
}

.sprint-board {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.sprint-column {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  display: flex;
  flex-direction: column;
  min-height: 260px;
}

.sprint-column__header {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: flex-start;
}

.sprint-column__header h3 {
  margin: 0;
}

.sprint-column__header > div {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.sprint-column__header p {
  margin: 0.2rem 0 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.sprint-column__dropzone {
  flex: 1;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.sprint-column--dragover {
  box-shadow: inset 0 0 0 2px var(--primary);
}

.sprint-board-empty {
  color: var(--text-muted);
}

.sprint-card {
  background: var(--surface-muted);
  border-radius: 0.9rem;
  padding: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  border: 1px solid transparent;
}

.sprint-card__head {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  align-items: flex-start;
}

.sprint-card__title {
  margin: 0;
  font-size: 1rem;
}

.sprint-card__id {
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.sprint-card__delete {
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
}

.sprint-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}

.sprint-card__priority {
  border: none;
  border-radius: 999px;
  padding: 0.2rem 0.8rem;
  font-size: 0.75rem;
  cursor: pointer;
  color: #fff;
}

.sprint-card__priority--high {
  background: #e03131;
}

.sprint-card__priority--medium {
  background: #f59f00;
}

.sprint-card__priority--low {
  background: #2f9e44;
}

.sprint-card__owner {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.sprint-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.sprint-card__tags span {
  background: rgba(145, 167, 255, 0.12);
  color: var(--primary);
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 0.5rem;
}

.sprint-card__status {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.sprint-card__status select {
  border: 1px solid var(--border);
  border-radius: 0.6rem;
  padding: 0.4rem 0.6rem;
  background: var(--surface);
  color: inherit;
}

.sprint-card--dragging {
  opacity: 0.5;
}

.timed-sprint {
  margin: 2rem clamp(1rem, 5vw, 4rem) 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1.2rem;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.timed-sprint__header {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: space-between;
}

.timed-sprint__hint {
  color: var(--text-muted);
}

.timed-sprint__actions {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
}

.timed-sprint__status {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  padding: 1rem;
  border: 1px dashed var(--border);
  border-radius: 1rem;
  background: var(--surface-muted);
}

.timed-sprint__status span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.timed-sprint__status strong {
  font-size: 1.4rem;
}

.timed-sprint__board {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.timed-sprint__column {
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: var(--surface-muted);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.timed-sprint__column header {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
}

.timed-sprint__list {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.timed-ticket {
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  background: var(--surface);
  overflow: hidden;
}

.timed-ticket summary {
  list-style: none;
  cursor: pointer;
  margin: 0;
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.timed-ticket__hint {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.timed-ticket__preview {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.timed-ticket[open] summary {
  border-bottom: 1px solid var(--border);
}

.timed-ticket__body {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.timed-ticket__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.timed-ticket__form {
  display: flex;
  gap: 0.5rem;
}

.timed-ticket__form input {
  flex: 1;
  border: 1px solid var(--border);
  border-radius: 0.6rem;
  padding: 0.5rem 0.75rem;
  background: var(--surface-muted);
  color: inherit;
}

.timed-ticket__status {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.timed-ticket--solved {
  border-color: #2f9e44;
}

.timed-ticket--solved summary {
  background: rgba(47, 158, 68, 0.08);
}

.timed-ticket--locked {
  opacity: 0.6;
}

.timed-sprint__column .timed-sprint__list:empty::after {
  content: 'Тут появятся тикеты после старта.';
  display: block;
  padding: 0.5rem;
  color: var(--text-muted);
}

@media (max-width: 720px) {
  .timed-sprint__actions {
    width: 100%;
    justify-content: stretch;
  }

  .timed-sprint__actions .btn {
    flex: 1;
  }

  .timed-ticket__form {
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .sprint-form {
    grid-template-columns: 1fr;
  }

  .sprint-board__controls {
    flex-direction: column;
    align-items: flex-start;
  }
}

footer {
  padding: 2rem clamp(1rem, 5vw, 4rem);
  color: var(--text-muted);
}

@media (max-width: 600px) {
  header.hero {
    padding-top: 1.5rem;
  }

  .hero__actions {
    width: 100%;
  }
}

.hidden {
  display: none !important;
}
.overview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
}

.overview article h3 {
  margin-top: 0;
}

.overview ul {
  padding-left: 1.2rem;
  margin: 0 0 0.5rem;
}

.overview li {
  margin-bottom: 0.35rem;
}
.telegram-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--primary);
  text-decoration: none;
}

.footer {
  padding: 1.5rem clamp(1rem, 5vw, 4rem);
  display: flex;
  justify-content: center;
  border-top: 1px solid var(--border);
}