/* Треки обучения — визуально в одной системе с artempochemy (тема из base.css) */
.course-track,
.course-track * {
  box-sizing: border-box;
}

.course-track {
  font-family: var(--font-sans);
  color: var(--fg);
  background: transparent;
  min-height: min(70vh, 900px);
  padding-block: calc(8px * 3) calc(8px * 8);
}

.course-track-layout {
  display: flex;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline-start: max(var(--gutter), env(safe-area-inset-left, 0px));
  padding-inline-end: max(var(--gutter), env(safe-area-inset-right, 0px));
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  box-shadow: 0 0 0 1px var(--card-shadow);
  overflow: hidden;
  min-height: min(85vh, 960px);
}

/* Сайдбар */
.course-track .sidebar {
  width: min(280px, 32vw);
  flex-shrink: 0;
  border-right: 1px solid var(--line);
  background: var(--surface-panel);
  padding: calc(8px * 4) calc(8px * 3);
  overflow-y: auto;
}

.course-track .logo {
  text-align: left;
  margin-bottom: calc(8px * 4);
  padding-bottom: calc(8px * 3);
  border-bottom: 1px solid var(--line);
}

.course-track .logo h1 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 calc(8px * 1);
  color: var(--fg);
}

.course-track .logo p {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.course-track .week {
  margin-bottom: calc(8px * 3);
}

.course-track .week-title {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: calc(8px * 2);
  padding: calc(8px * 2) calc(8px * 2);
  background: var(--card-fill);
  border: 1px solid var(--line);
  cursor: pointer;
  transition:
    border-color 0.25s var(--ease),
    background 0.25s var(--ease);
  color: var(--fg-muted);
  line-height: 1.45;
}

.course-track .week-title:hover {
  border-color: var(--line-strong);
  background: var(--surface-hover);
  color: var(--fg);
}

.course-track .days {
  display: none;
  margin: calc(8px * 1) 0 0 calc(8px * 1);
  padding-left: calc(8px * 2);
  border-left: 1px solid var(--line);
}

.course-track .days.active {
  display: block;
}

.course-track .day-link {
  display: block;
  padding: calc(8px * 1.5) calc(8px * 2);
  margin: calc(8px * 1) 0;
  background: transparent;
  border: 1px solid transparent;
  text-decoration: none;
  color: var(--fg-muted);
  font-size: 13px;
  line-height: 1.45;
  transition:
    border-color 0.2s var(--ease),
    color 0.2s var(--ease),
    background 0.2s var(--ease);
}

.course-track .day-link:hover {
  color: var(--fg);
  border-color: var(--line);
  background: var(--card-fill);
}

.course-track .day-link.active {
  color: var(--fg);
  border-color: var(--line-strong);
  background: var(--card-fill);
  box-shadow: inset 3px 0 0 0 var(--binary-bright);
}

/* Основной контент */
.course-track .main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.course-track .lesson-header {
  padding: calc(8px * 4) calc(8px * 5);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface-panel), transparent);
}

.course-track .lesson-header h2 {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  margin: 0 0 calc(8px * 2);
  color: var(--fg);
  line-height: 1.2;
}

.course-track .lesson-meta {
  display: flex;
  flex-wrap: wrap;
  gap: calc(8px * 2) calc(8px * 4);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.course-track .lesson-content {
  flex: 1;
  padding: calc(8px * 4) calc(8px * 5);
  overflow-y: auto;
  background: transparent;
}

.course-track .lesson-section {
  border: 1px solid var(--line);
  background: var(--card-fill);
  padding: calc(8px * 4);
  margin-bottom: calc(8px * 3);
}

.course-track .lesson-section h3 {
  margin: 0 0 calc(8px * 3);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg);
  padding-bottom: calc(8px * 2);
  border-bottom: 1px solid var(--line);
}

.course-track .code-block {
  background: color-mix(in srgb, var(--fg) 7%, var(--bg));
  color: var(--fg);
  border: 1px solid var(--line);
  padding: calc(8px * 3);
  margin: calc(8px * 2) 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.55;
  overflow-x: auto;
  white-space: pre-wrap;
}

.course-track .console-open-btn {
  width: 100%;
  padding: calc(8px * 2) calc(8px * 3);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg);
  background: transparent;
  border: 1px solid var(--line-strong);
  cursor: pointer;
  transition:
    background 0.2s var(--ease),
    border-color 0.2s var(--ease);
}

.course-track .console-open-btn:hover {
  background: var(--surface-hover);
  border-color: var(--fg-muted);
}

.course-track .console-open-btn:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 3px;
}

/* Модальное окно консоли — изолировано по #console-modal */
#console-modal.console-modal {
  display: none;
  position: fixed;
  z-index: 10000;
  inset: 0;
  align-items: center;
  justify-content: center;
  padding: max(var(--gutter), env(safe-area-inset-top, 0px)) max(var(--gutter), env(safe-area-inset-right, 0px)) max(var(--gutter), env(safe-area-inset-bottom, 0px)) max(var(--gutter), env(safe-area-inset-left, 0px));
  background: color-mix(in srgb, var(--bg) 75%, black);
  backdrop-filter: blur(6px);
}

#console-modal.console-modal.active {
  display: flex;
  animation: python-console-fade 0.25s var(--ease) both;
}

@keyframes python-console-fade {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

#console-modal .console-modal-content {
  width: 100%;
  max-width: 52rem;
  max-height: min(90vh, 880px);
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line-strong);
  background: var(--bg-elevated);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.35);
  overflow: hidden;
  animation: python-console-rise 0.3s var(--ease-smooth) both;
}

@keyframes python-console-rise {
  from {
    transform: translateY(12px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

#console-modal .console-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: calc(8px * 2);
  padding: calc(8px * 2) calc(8px * 3);
  border-bottom: 1px solid var(--line);
  background: var(--surface-panel);
}

#console-modal .console-header h3 {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg);
}

#console-modal .console-close {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  font-size: 1.25rem;
  line-height: 1;
  color: var(--fg);
  background: transparent;
  border: 1px solid var(--line);
  cursor: pointer;
  transition:
    background 0.2s var(--ease),
    border-color 0.2s var(--ease);
}

#console-modal .console-close:hover {
  background: var(--surface-hover);
  border-color: var(--line-strong);
}

#console-modal .console-close:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 2px;
}

#console-modal .console-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: calc(8px * 1);
  padding: calc(8px * 2) calc(8px * 3);
  border-bottom: 1px solid var(--line);
  background: var(--card-fill);
}

#console-modal .console-toolbar button {
  padding: calc(8px * 1) calc(8px * 2);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-muted);
  background: transparent;
  border: 1px solid var(--line);
  cursor: pointer;
  transition:
    color 0.2s var(--ease),
    border-color 0.2s var(--ease),
    background 0.2s var(--ease);
}

#console-modal .console-toolbar button:hover {
  color: var(--fg);
  border-color: var(--line-strong);
  background: var(--surface-hover);
}

#console-modal .console-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: calc(8px * 3);
  overflow: hidden;
  min-height: 0;
}

#console-modal .console-preview-wrap {
  display: none;
  flex-shrink: 0;
  border-bottom: 1px solid var(--line);
  background: var(--surface-panel);
}

#console-modal .console-preview-wrap.is-on {
  display: block;
}

#console-modal .console-preview-frame {
  display: block;
  width: 100%;
  height: min(28vh, 260px);
  border: 0;
  background: #fff;
}

html[data-theme="dark"] #console-modal .console-preview-frame {
  background: #121212;
}

#console-modal .console-output {
  flex: 1;
  min-height: 200px;
  max-height: min(42vh, 400px);
  padding: calc(8px * 2);
  margin-bottom: calc(8px * 2);
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.55;
  color: color-mix(in srgb, var(--fg) 88%, transparent);
  background: color-mix(in srgb, var(--fg) 5%, var(--bg));
  border: 1px solid var(--line);
  white-space: pre-wrap;
}

#console-modal .console-output .console-welcome {
  color: var(--fg-muted);
  white-space: pre-wrap;
}

#console-modal .console-output::-webkit-scrollbar {
  width: 8px;
}

#console-modal .console-output::-webkit-scrollbar-track {
  background: var(--card-fill);
}

#console-modal .console-output::-webkit-scrollbar-thumb {
  background: var(--line-strong);
}

#console-modal .console-input-area {
  display: flex;
  flex-direction: column;
  gap: calc(8px * 2);
}

#console-modal .console-input {
  width: 100%;
  min-height: 4.5rem;
  padding: calc(8px * 2);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
  color: var(--fg);
  background: color-mix(in srgb, var(--fg) 4%, var(--bg));
  border: 1px solid var(--line-strong);
  resize: vertical;
}

#console-modal .console-input:focus {
  outline: none;
  border-color: var(--fg-muted);
  box-shadow: 0 0 0 1px var(--line-strong);
}

#console-modal .console-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: calc(8px * 2);
}

#console-modal .console-btn {
  flex: 1;
  min-width: 8rem;
  padding: calc(8px * 2) calc(8px * 3);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg);
  background: transparent;
  border: 1px solid var(--line-strong);
  cursor: pointer;
  transition:
    background 0.2s var(--ease),
    border-color 0.2s var(--ease);
}

#console-modal .console-btn:hover {
  background: var(--surface-hover);
  border-color: var(--fg-muted);
}

#console-modal .console-btn.secondary {
  color: var(--fg-muted);
  border-color: var(--line);
}

#console-modal .console-btn:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 2px;
}

#console-modal .console-history {
  display: none;
  max-height: 140px;
  overflow-y: auto;
  margin-top: calc(8px * 2);
  padding: calc(8px * 2);
  border: 1px solid var(--line);
  background: var(--surface-panel);
}

#console-modal .console-history.active {
  display: block;
}

#console-modal .history-item {
  padding: calc(8px * 1) calc(8px * 2);
  margin: 2px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-muted);
  border-radius: 0;
  cursor: pointer;
  transition: background 0.15s var(--ease);
}

#console-modal .history-item:hover {
  background: var(--card-fill);
  color: var(--fg);
}

#console-modal .console-out-meta {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-muted);
  margin-bottom: calc(8px * 1);
}

#console-modal .console-out-prompt {
  margin-bottom: calc(8px * 2);
}

#console-modal .console-in-snippet {
  display: block;
  margin: calc(8px * 1) 0 0;
  padding: calc(8px * 2);
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--fg) 4%, var(--bg));
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
  overflow-x: auto;
}

#console-modal .console-out-stdout,
#console-modal .console-out-stderr,
#console-modal .console-out-error {
  margin-bottom: calc(8px * 2);
}

#console-modal .console-out-stdout pre,
#console-modal .console-out-stderr pre {
  margin: 0;
  font-family: inherit;
  font-size: inherit;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}

#console-modal .console-out-stdout pre {
  color: var(--fg);
}

#console-modal .console-out-stderr pre {
  color: color-mix(in srgb, var(--fg) 55%, #e66 45%);
}

#console-modal .console-tb {
  margin: 0 0 calc(8px * 2);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--fg-muted);
}

#console-modal .console-err-label {
  font-size: 12px;
  color: var(--fg-muted);
  margin: calc(8px * 1) 0;
}

#console-modal .console-code-ctx {
  margin: 0 0 calc(8px * 2);
  padding: calc(8px * 2);
  border: 1px solid var(--line-strong);
  background: color-mix(in srgb, var(--fg) 6%, var(--bg));
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.45;
  color: var(--fg);
  white-space: pre;
  overflow-x: auto;
}

#console-modal .console-caret-hint {
  border-style: dashed;
  color: var(--fg-muted);
  font-size: 11px;
}

#console-modal .console-btn:disabled {
  opacity: 0.45;
  cursor: wait;
}

.course-track .navigation {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: calc(8px * 2);
  padding: calc(8px * 3) calc(8px * 5);
  border-top: 1px solid var(--line);
  background: var(--surface-panel);
}

.course-track .nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: calc(8px * 2) calc(8px * 3);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg);
  background: transparent;
  border: 1px solid var(--line-strong);
  cursor: pointer;
  transition:
    background 0.2s var(--ease),
    border-color 0.2s var(--ease);
}

.course-track .nav-btn:hover:not(:disabled) {
  background: var(--surface-hover);
  border-color: var(--fg-muted);
}

.course-track .nav-btn:disabled {
  opacity: 0.38;
  cursor: not-allowed;
  border-color: var(--line);
  color: var(--fg-muted);
}

.course-track .nav-btn:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 3px;
}

.course-track .theory-content {
  line-height: 1.65;
  color: var(--fg-muted);
}

.course-track .theory-content h4,
.course-track .theory-content h5 {
  color: var(--fg);
  margin-top: 1.25em;
}

.course-track .theory-content p {
  margin: 0 0 1em;
}

.course-track .theory-content ul,
.course-track .theory-content ol {
  margin: 0.75em 0 1em 1.25rem;
}

.course-track .theory-content li {
  margin-bottom: 0.35em;
}

.course-track .theory-content a {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.course-track .theory-content a:hover {
  opacity: 0.88;
}

.course-track .theory-content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 0.1em 0.35em;
  border: 1px solid var(--line);
  background: var(--surface-panel);
}

.course-track .hint {
  border: 1px solid var(--line);
  border-left-width: 3px;
  border-left-color: var(--binary-bright);
  background: var(--surface-panel);
  padding: calc(8px * 3);
  margin: calc(8px * 2) 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--fg-muted);
}

.course-track .hint a {
  color: var(--fg);
}

.course-track .task {
  border: 1px solid var(--line);
  border-left-width: 3px;
  border-left-color: var(--line-strong);
  background: var(--card-fill);
  padding: calc(8px * 3);
  margin: calc(8px * 2) 0;
  color: var(--fg-muted);
}

.course-track .task h4 {
  margin: 0 0 0.75em;
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg);
}

/* Адаптивность: планшеты в портрете и телефоны — одна колонка */
@media (max-width: 900px) {
  .course-track-layout {
    flex-direction: column;
    margin-inline: 0;
    min-height: unset;
  }

  .course-track .sidebar {
    width: 100%;
    max-height: min(40vh, 320px);
    border-right: none;
    border-bottom: 1px solid var(--line);
  }

  .course-track .lesson-header,
  .course-track .lesson-content,
  .course-track .navigation {
    padding-inline: calc(8px * 3);
  }
}

@media (max-width: 480px) {
  .course-track {
    padding-block: calc(8px * 2) calc(8px * 5);
  }

  .course-track .sidebar {
    max-height: min(38vh, 280px);
    padding: calc(8px * 3) calc(8px * 2);
  }

  .course-track .week-title {
    padding-block: calc(8px * 2.5);
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .course-track .day-link {
    padding-block: calc(8px * 2);
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .course-track .lesson-header,
  .course-track .lesson-content,
  .course-track .navigation {
    padding-inline: calc(8px * 2);
    padding-block: calc(8px * 3);
  }

  .course-track .lesson-header {
    padding-block: calc(8px * 3);
  }

  .course-track .nav-btn {
    min-height: 48px;
    flex: 1 1 calc(50% - 8px);
    justify-content: center;
  }

  .course-track .code-block {
    font-size: 12px;
    padding: calc(8px * 2);
  }

  #console-modal .console-btn {
    min-height: 48px;
  }
}

/* Завершение курса — баннер на последнем дне (Python и треки HTML/CSS/JS) */
.course-track .course-complete-banner {
  margin-top: calc(8px * 3);
  padding: calc(8px * 4) calc(8px * 3);
  border-radius: 12px;
  border: 1px solid var(--line);
  background: linear-gradient(145deg, var(--surface-panel) 0%, var(--card-fill) 55%, var(--surface-panel) 100%);
  text-align: center;
}

.course-track .course-complete-banner[hidden] {
  display: none !important;
}

.course-track .course-complete-banner__inner {
  max-width: 40rem;
  margin-inline: auto;
}

.course-track .course-complete-banner__emoji {
  font-size: 1.75rem;
  margin: 0 0 calc(8px * 1);
  line-height: 1;
}

.course-track .course-complete-banner__title {
  margin: 0 0 calc(8px * 2);
  font-size: clamp(1.05rem, 2.5vw, 1.25rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--fg);
}

.course-track .course-complete-banner__lead,
.course-track .course-complete-banner__sub,
.course-track .course-complete-banner__next {
  margin: 0 0 calc(8px * 2);
  font-size: 14px;
  line-height: 1.65;
  color: var(--fg-muted);
}

.course-track .course-complete-banner__lead strong,
.course-track .course-complete-banner__next strong {
  color: var(--fg);
  font-weight: 600;
}

.course-track .course-complete-banner__sub {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.9;
}

.course-track .course-complete-banner__next a {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.course-track .course-complete-banner__badge {
  margin: calc(8px * 2) 0 calc(8px * 1);
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg);
}

.course-track .course-complete-banner__tagline {
  margin: 0;
  font-size: 13px;
  color: var(--fg-muted);
  font-style: italic;
}