:root {
  --color-background: #f3f4f8;
  --color-surface: #ffffff;
  --color-border: #dde1ea;

  --color-text: #1e2433;
  --color-text-soft: #5d6678;

  --color-primary: #5b3fa0;
  --color-primary-dark: #43307c;

  /* Картата */
  --map-street: #ffffff;
  --map-block: #e6e9ef;
  --map-boulevard-edge: #cfd5df;

  --vector-ink: #1e2433;
  --vector-soft: #8a93a5;

  /* Едно значение на цвят в целия урок */
  --color-drone: #1f6fd1;
  --color-ambulance: #e0701a;
  --color-route-m2: #6a4bb5;
  --color-traffic: #c6362c;
  --color-wind: #0f7f7a;

  /* Обратна връзка: иконата и текстът носят смисъла, цветът само помага */
  --color-success: #16794e;
  --color-success-soft: #e8f6ee;
  --color-warning: #9a6200;
  --color-warning-border: #e2a93b;
  --color-warning-soft: #fdf4e3;
  --color-hint: #3b4a63;
  --color-hint-soft: #eef2f7;

  --status-background: #1f2533;
  --status-text: #e9ecf3;
  --status-soft: #9aa3b5;

  --radius-small: 10px;
  --radius-medium: 16px;

  --shadow-small: 0 8px 22px rgba(30, 36, 51, 0.08);
}


/* ========================================
   ОСНОВНИ НАСТРОЙКИ
   Размерът расте с екрана – на проектор
   1280×720 основният текст е около 19–20 px.
======================================== */

* {
  box-sizing: border-box;
}

html {
  font-size: clamp(16px, 0.8vw + 9px, 24px);
}

body {
  margin: 0;
  height: 100vh;

  display: grid;
  grid-template-rows: auto auto 1fr;

  background: var(--color-background);
  color: var(--color-text);

  font-family:
    Inter,
    "Segoe UI",
    Arial,
    sans-serif;

  line-height: 1.45;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.nowrap {
  white-space: nowrap;
}

sub {
  font-size: 0.7em;
}


/* ========================================
   ЗАПИС НА ВЕКТОР – стрелка над буквите
======================================== */

.vec {
  position: relative;
  display: inline-block;
  min-width: 0.6em;
  padding-top: 0.28em;

  font-style: italic;
  line-height: 1;
  text-align: center;
}

.vec::before {
  content: "";
  position: absolute;
  top: 0.1em;
  left: 0;
  right: 0.04em;

  border-top: 0.08em solid currentColor;
}

.vec::after {
  content: "";
  position: absolute;
  top: 0;
  right: -0.04em;

  border-left: 0.3em solid currentColor;
  border-top: 0.14em solid transparent;
  border-bottom: 0.14em solid transparent;
}


/* ========================================
   ГОРНО МЕНЮ
======================================== */

.lesson-header {
  padding: 0.4rem 1rem;

  display: grid;
  grid-template-columns: 1fr minmax(12rem, 22rem) 1fr;
  align-items: center;
  gap: 1rem;

  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.lesson-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;

  color: var(--color-text);
  text-decoration: none;

  font-size: 0.85rem;
  font-weight: 800;
}

.lesson-logo img {
  width: 1.8rem;
  height: 1.8rem;
  object-fit: contain;
}

.lesson-progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;

  color: var(--color-text-soft);
  font-size: 0.72rem;
  font-weight: 700;
}

.lesson-progress-track {
  height: 0.35rem;
  margin-top: 0.25rem;

  background: #eceff5;
  border-radius: 999px;
  overflow: hidden;
}

.lesson-progress-bar {
  height: 100%;
  background: var(--color-primary);
}

.back-button {
  justify-self: end;
  padding: 0.35rem 0.9rem;

  color: var(--color-primary-dark);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  text-decoration: none;

  font-size: 0.75rem;
  font-weight: 700;
}


/* ========================================
   СТАТУС ЛЕНТА
======================================== */

.status-bar {
  padding: 0.45rem 1rem;

  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.5rem;

  background: var(--status-background);
  color: var(--status-text);

  font-size: 0.8rem;
}

.status-signal {
  display: flex;
  align-items: center;
  gap: 0.5rem;

  color: var(--status-soft);
}

.status-signal b {
  color: var(--status-text);
}

.status-dot {
  width: 0.55rem;
  height: 0.55rem;

  background: #f0a23b;
  border-radius: 50%;
}

.status-times {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.time-row {
  display: grid;
  grid-template-columns: 4.6rem 1fr 6.5rem;
  align-items: center;
  gap: 0.6rem;
}

/* EN: „AED by drone“ е по-дълго – колоната се разширява само за EN */
html[lang="en"] .time-row {
  grid-template-columns: 6.4rem 1fr 6.5rem;
}

/* EN: надписът „ambulance“ излиза с няколко единици вляво от viewBox */
html[lang="en"] #city-map {
  overflow: visible;
}

.time-name {
  font-weight: 700;
}

.time-row-drone .time-name {
  color: #8ab8f2;
}

.time-row-ambulance .time-name {
  color: #f3a868;
}

.time-track {
  height: 0.5rem;

  background: rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  overflow: hidden;
}

.time-fill {
  display: block;
  width: 0;
  height: 100%;

  border-radius: 999px;
  transition: width 0.6s ease;
}

.time-row-drone .time-fill {
  background: var(--color-drone);
}

.time-row-ambulance .time-fill {
  background: var(--color-ambulance);
}

.time-value {
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.time-value s {
  margin-right: 0.35rem;

  color: var(--status-soft);
  font-weight: 400;
}

.status-decision {
  color: var(--status-soft);
}

.status-decision b {
  margin-left: 0.3rem;
  padding: 0.1rem 0.6rem;

  color: var(--status-text);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 6px;

  letter-spacing: 0.04em;
}


/* ========================================
   РАБОТНА ЗОНА: карта 60% | задача 40%
======================================== */

.workspace {
  min-height: 0;
  padding: 0.75rem;

  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 0.75rem;
}


/* ========================================
   КАРТА
======================================== */

.map-card {
  min-height: 0;
  padding: 0.6rem;

  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;

  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-small);
}

.map-frame {
  min-height: 0;
  min-width: 0;
}

#city-map {
  display: block;
  width: 100%;
  height: 100%;
}

.map-legend {
  width: 12.5rem;
  padding: 0.25rem 0.25rem 0 0;

  font-size: 0.72rem;
  color: var(--color-text-soft);
}

.legend-title {
  margin: 0 0 0.4rem;

  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.62rem;
  font-weight: 800;
}

.legend-list {
  margin: 0 0 0.9rem;
  padding: 0;

  display: grid;
  gap: 0.45rem;

  list-style: none;
}

.legend-list li {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  align-items: center;
  gap: 0.45rem;

  color: var(--color-text);
}

.legend-icon {
  width: 2.4rem;
  height: 1rem;
  overflow: visible;
}

.legend-vector {
  stroke: var(--vector-ink);
  stroke-width: 3;
}

.legend-vector-head {
  fill: var(--vector-ink);
}

.legend-boulevard {
  stroke: var(--map-boulevard-edge);
  stroke-width: 9;
  stroke-linecap: round;
}

.legend-route-m1,
.legend-route-m2 {
  stroke-width: 10;
  stroke-linecap: round;
}

.legend-route-m1 {
  stroke: var(--color-ambulance);
}

.legend-route-m2 {
  stroke: var(--color-route-m2);
  stroke-dasharray: 12 8;
  stroke-linecap: butt;
}

.legend-scale {
  margin-bottom: 0.9rem;

  display: grid;
  gap: 0.3rem;

  color: var(--color-text);
}

.scale-bar {
  width: 3rem;
  height: 0.4rem;

  border: 2px solid var(--color-text);
  border-top: 0;
}


.legend-length {
  margin-left: 0.3rem;
  font-variant-numeric: tabular-nums;
}

.legend-length:not(:empty)::before {
  content: "· ";
  font-weight: 400;
}

.legend-list li.is-dimmed {
  opacity: 0.4;
}

[hidden] {
  display: none !important;
}


/* --- Елементи в SVG картата --- */

.map-block {
  fill: var(--map-block);
}

.map-boulevard-edge {
  stroke: var(--map-boulevard-edge);
  stroke-width: 30;
  stroke-linecap: round;
}

.map-boulevard {
  stroke: var(--map-street);
  stroke-width: 22;
  stroke-linecap: round;
}

.map-boulevard-label {
  fill: var(--color-text-soft);
  font-size: 22px;
  font-style: italic;
}

.route {
  fill: none;
  stroke-width: 20;
  stroke-linecap: round;
  stroke-linejoin: round;

  opacity: 0;
  transition: opacity 0.6s ease;
}

.route.is-visible {
  opacity: 0.85;
}

.route.is-dimmed {
  opacity: 0.2;
}

.route-casing {
  fill: none;
  stroke: #ffffff;
  stroke-width: 28;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.route-m1 {
  stroke: var(--color-ambulance);
}

.route-m2 {
  stroke: var(--color-route-m2);
  stroke-dasharray: 30 20;
  stroke-linecap: butt;
}

.vector {
  stroke-width: 4;
  stroke-linecap: round;
}

.vector-ink {
  stroke: var(--vector-ink);
}

.vector-soft {
  stroke: var(--vector-soft);
  stroke-width: 3;
  stroke-dasharray: none;
}

.vector-group {
  transition: opacity 0.4s ease;
}

.vector-group.is-hidden {
  opacity: 0;
}

.vector-label text {
  font-size: 34px;
  font-style: italic;
  font-weight: 700;

  paint-order: stroke;
  stroke: #ffffff;
  stroke-width: 9px;
  stroke-linejoin: round;
}

.vector-label path {
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.vector-label-ink text {
  fill: var(--vector-ink);
}

.vector-label-ink path {
  stroke: var(--vector-ink);
}

.vector-label-soft text {
  fill: var(--vector-soft);
}

.vector-label-soft path {
  stroke: var(--vector-soft);
}

.point-marker text {
  fill: #ffffff;
  font-size: 30px;
  font-weight: 800;
  text-anchor: middle;
  dominant-baseline: central;
}

.point-caption {
  fill: var(--color-text);
  font-size: 24px;
  font-weight: 600;

  paint-order: stroke;
  stroke: #ffffff;
  stroke-width: 8px;
  stroke-linejoin: round;
}


/* ========================================
   ЗАДАЧА
======================================== */

.task-panel {
  min-height: 0;

  display: grid;
  grid-template-rows: 1fr auto;

  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-small);
  overflow: hidden;
}

.task-scroll {
  min-height: 0;
  padding: 0.9rem 1.1rem;
  overflow-y: auto;
}

.task-kicker {
  margin: 0;

  color: var(--color-text-soft);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.65rem;
  font-weight: 800;
}

.task-title {
  margin: 0.1rem 0 0.5rem;

  font-size: 1.2rem;
  line-height: 1.2;
}

.task-situation {
  margin: 0 0 0.4rem;
}

.route-formulas {
  margin-bottom: 0.75rem;
  padding: 0.5rem 0.75rem;

  display: grid;
  gap: 0.4rem;

  background: #f6f7fa;
  border-radius: var(--radius-small);
}

.route-formula {
  margin: 0;

  display: flex;
  align-items: center;
  gap: 0.45rem;

  font-size: 1.05rem;
}

.route-swatch {
  width: 1.6rem;
  height: 0.45rem;
  flex: none;

  border-radius: 999px;
}

.route-swatch-m1 {
  background: var(--color-ambulance);
}

.route-swatch-m2 {
  background:
    repeating-linear-gradient(
      90deg,
      var(--color-route-m2) 0 0.45rem,
      transparent 0.45rem 0.7rem
    );
  border-radius: 0;
}

.task-parts {
  margin: 0;
  padding: 0;

  display: grid;
  gap: 0.55rem;

  list-style: none;
}

.task-part {
  padding: 0.55rem 0.75rem;

  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
}

.task-part.is-active {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.task-part.is-locked {
  padding-block: 0.3rem;

  color: var(--color-text-soft);
  background: #fafbfc;

  font-size: 0.9rem;
}

.task-part.is-done {
  background: var(--color-success-soft);
  border-color: transparent;
}

.part-question {
  margin: 0;
}

.part-letter {
  margin-right: 0.2rem;
  font-weight: 800;
}

.part-body {
  margin-top: 0.5rem;

  display: grid;
  gap: 0.45rem;
}

.answer-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;

  font-size: 1.05rem;
}

.answer-label {
  min-width: 2.8rem;
  font-weight: 700;
}

.answer-input {
  width: 3.2rem;
  padding: 0.2rem 0.3rem;

  color: var(--color-text);
  background: #ffffff;
  border: 2px solid #c3c9d6;
  border-radius: 8px;

  text-align: center;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.answer-input-wide {
  width: 5.5rem;
}

.answer-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(91, 63, 160, 0.2);
}

.answer-input[aria-invalid="true"] {
  border-color: var(--color-warning-border);
  background: var(--color-warning-soft);
}

.choice-row {
  display: flex;
  gap: 0.6rem;
}

.choice {
  position: relative;
}

.choice input {
  position: absolute;
  opacity: 0;
}

.choice span {
  display: inline-block;
  padding: 0.3rem 1.2rem;

  border: 2px solid #c3c9d6;
  border-radius: 8px;

  font-size: 1.05rem;
  font-weight: 700;
}

.choice input:checked + span {
  color: #ffffff;
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.choice input:focus-visible + span {
  box-shadow: 0 0 0 3px rgba(91, 63, 160, 0.3);
}

.check-button {
  justify-self: start;
  padding: 0.35rem 1.2rem;

  color: #ffffff;
  background: var(--color-primary);
  border: 0;
  border-radius: 8px;

  font-weight: 700;
}

.check-button:hover {
  background: var(--color-primary-dark);
}

.part-summary {
  margin: 0.3rem 0 0;

  color: var(--color-success);
  font-weight: 700;
}

.part-summary::before {
  content: "✓ ";
}


/* ========================================
   ОБРАТНА ВРЪЗКА – отделна зона
======================================== */

.feedback-zone {
  padding: 0.6rem 1.1rem 0.8rem;

  background: #f8f9fb;
  border-top: 1px solid var(--color-border);
}

.feedback-label {
  margin: 0 0 0.35rem;

  color: var(--color-text-soft);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.62rem;
  font-weight: 800;
}

.feedback {
  min-height: 3.2rem;
  max-height: 32vh;
  overflow-y: auto;

  display: grid;
  gap: 0.4rem;
}

.feedback-empty {
  margin: 0;
  color: var(--color-text-soft);
  font-size: 0.85rem;
}

.feedback-message {
  margin: 0;
  padding: 0.4rem 0.65rem;

  display: grid;
  grid-template-columns: 1.4rem 1fr;
  gap: 0.35rem;

  border-left: 4px solid;
  border-radius: 6px;
}

.feedback-icon {
  font-weight: 900;
  text-align: center;
}

.feedback-title {
  font-weight: 800;
}

.feedback-success {
  color: var(--color-success);
  background: var(--color-success-soft);
  border-color: var(--color-success);
}

.feedback-success .feedback-body {
  color: var(--color-text);
}

.feedback-warning {
  color: var(--color-warning);
  background: var(--color-warning-soft);
  border-color: var(--color-warning-border);
}

.feedback-warning .feedback-body,
.feedback-hint .feedback-body {
  color: var(--color-text);
}

.feedback-hint {
  color: var(--color-hint);
  background: var(--color-hint-soft);
  border-color: var(--color-hint);
}

.solution-button {
  justify-self: start;
  padding: 0.3rem 0.9rem;

  color: var(--color-hint);
  background: #ffffff;
  border: 1px solid var(--color-hint);
  border-radius: 8px;

  font-size: 0.85rem;
  font-weight: 700;
}


/* ========================================
   ПО-МАЛКИ ЕКРАНИ
   (таблет или тесен прозорец)
======================================== */

@media (max-width: 900px) {
  body {
    height: auto;
    display: block;
  }

  .status-bar {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }

  .status-times {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }

  .workspace {
    grid-template-columns: 1fr;
  }

  .map-card {
    grid-template-columns: 1fr;
  }

  .map-frame {
    height: 70vh;
  }

  .map-legend {
    width: auto;
  }

  .lesson-header {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }

  .header-actions {
    justify-self: start;
  }

  .compare-row {
    grid-template-columns: 6rem 1fr 3.6rem;
  }
}


/* ========================================
   ГОРНО МЕНЮ – бутони
======================================== */

.header-actions {
  justify-self: end;

  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.header-button {
  padding: 0.35rem 0.9rem;

  color: var(--color-primary-dark);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;

  font-size: 0.75rem;
  font-weight: 700;
}

.header-actions .back-button {
  justify-self: auto;
}

@media (max-width: 900px) {
  .header-actions {
    justify-self: start;
  }
}


/* ========================================
   ЕЗИКОВ ПРЕВКЛЮЧВАТЕЛ BG | EN
======================================== */

.lesson-header .lang-switch {
  padding: 0.35rem 0.6rem;

  display: inline-flex;
  align-items: center;
  gap: 2px;

  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;

  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.lesson-header .lang-switch a,
.lesson-header .lang-switch-current {
  padding: 0 4px;
}

.lesson-header .lang-switch a {
  color: var(--color-text-soft);
  text-decoration: none;
}

.lesson-header .lang-switch a:hover,
.lesson-header .lang-switch a:focus-visible {
  color: var(--color-primary);
}

.lesson-header .lang-switch-current {
  color: var(--color-text);
}

.lesson-header .lang-switch-divider {
  color: var(--color-border);
}


/* ========================================
   ЕКРАНИ В ПАНЕЛА ЗА ЗАДАЧИ
======================================== */

.lesson-screen {
  display: grid;
  gap: 0.6rem;
}

.lesson-screen > * {
  margin-top: 0;
  margin-bottom: 0;
}

.signal-card {
  padding: 0.6rem 0.8rem;

  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.6rem;
  align-items: start;

  background: var(--color-warning-soft);
  border-left: 4px solid var(--color-warning-border);
  border-radius: var(--radius-small);
}

.signal-card .status-dot {
  margin-top: 0.45rem;
}

.signal-card p {
  margin: 0;
}

.given-box {
  padding: 0.5rem 0.75rem;

  display: grid;
  gap: 0.3rem;

  background: #f6f7fa;
  border-radius: var(--radius-small);
}

.given-box p {
  margin: 0;
}

.given-title {
  color: var(--color-text-soft);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.62rem;
  font-weight: 800;
}

.given-formula {
  font-size: 1.05rem;
}

.question-box {
  padding: 0.55rem 0.8rem;

  border: 2px solid var(--color-primary);
  border-radius: var(--radius-small);

  font-weight: 700;
}

.alert-card {
  padding: 0.55rem 0.8rem;

  display: grid;
  gap: 0.25rem;

  background: #fbeceb;
  border-left: 4px solid var(--color-traffic);
  border-radius: var(--radius-small);
}

.alert-card p {
  margin: 0;
}

.alert-title {
  color: var(--color-traffic);
  font-weight: 800;
}

.model-note {
  padding: 0.4rem 0.7rem;

  color: var(--color-text-soft);
  border: 1px dashed #b8bfcc;
  border-radius: var(--radius-small);

  font-size: 0.85rem;
}

.model-note b {
  color: var(--color-text);
}

.input-note {
  color: var(--color-text-soft);
  font-size: 0.8rem;
}

.choice-column {
  display: grid;
  gap: 0.4rem;
}

.choice-column .choice span {
  display: block;
  padding: 0.35rem 0.8rem;

  font-size: 0.95rem;
  font-weight: 600;
}

.answer-input-mid {
  width: 4.4rem;
}

.screen-nav {
  margin-top: 0.4rem;

  display: flex;
  justify-content: space-between;
  gap: 0.6rem;
}

.nav-button {
  padding: 0.45rem 1.2rem;

  color: #ffffff;
  background: var(--color-primary);
  border: 0;
  border-radius: 8px;

  font-weight: 700;
}

.nav-button:hover {
  background: var(--color-primary-dark);
}

.nav-button-secondary {
  color: var(--color-primary-dark);
  background: #eceff5;
}

.nav-button-secondary:hover {
  background: #e0e4ed;
}

.nav-button[disabled] {
  color: var(--color-text-soft);
  background: #eceff5;
  cursor: not-allowed;
}

.nav-button-start {
  justify-self: start;
  padding: 0.6rem 1.6rem;

  font-size: 1.05rem;
}


/* --- Сравнение на времената --- */

.compare {
  display: grid;
  gap: 0.35rem;
}

.compare-row {
  display: grid;
  grid-template-columns: 7.5rem 1fr 4.2rem;
  align-items: center;
  gap: 0.5rem;

  font-size: 0.9rem;
}

.compare-track {
  height: 0.7rem;

  background: #eceff5;
  border-radius: 999px;
  overflow: hidden;
}

.compare-fill {
  display: block;
  height: 100%;
  border-radius: 999px;
}

.compare-fill-drone {
  background: var(--color-drone);
}

.compare-fill-ambulance {
  background: var(--color-ambulance);
}

.compare-value {
  text-align: right;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}


/* --- Дневник на решенията --- */

.decision-log {
  width: 100%;

  border-collapse: collapse;
  font-size: 0.85rem;
}

.decision-log th,
.decision-log td {
  padding: 0.3rem 0.4rem;

  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.decision-log th {
  color: var(--color-text-soft);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.decision-log td.num {
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.takeaways {
  margin: 0;
  padding-left: 1.2rem;

  display: grid;
  gap: 0.25rem;
}


/* ========================================
   НОВИ ЕЛЕМЕНТИ ПО КАРТАТА
======================================== */

.map-base {
  transition: opacity 0.4s ease;
}

.map-base.is-faded {
  opacity: 0.35;
}

.trajectory {
  stroke: var(--color-drone);
  stroke-width: 10;
  stroke-linecap: round;
  stroke-dasharray: 2 18;

  opacity: 0;
  transition: opacity 0.6s ease;
}

.trajectory.is-visible {
  opacity: 0.8;
}

.traffic-zone {
  fill: none;
  stroke: var(--color-traffic);
  stroke-width: 34;
  stroke-linecap: round;
  stroke-linejoin: round;

  opacity: 0;
  transition: opacity 0.6s ease;
}

.traffic-zone.is-visible {
  opacity: 0.35;
}

.map-feature {
  opacity: 0;
  transition: opacity 0.5s ease;
}

.map-feature.is-visible {
  opacity: 1;
}

.tower-ring {
  fill: none;
  stroke: var(--color-traffic);
  stroke-width: 3;
  stroke-dasharray: 8 6;
}

.tower-body {
  fill: #ffffff;
  stroke: var(--vector-ink);
  stroke-width: 3;
}

.tower-letter,
.x-letter {
  font-size: 26px;
  font-weight: 800;
  text-anchor: middle;
  dominant-baseline: central;
}

.tower-letter {
  fill: var(--vector-ink);
}

.x-dot {
  fill: var(--color-drone);
  stroke: #ffffff;
  stroke-width: 4;
}

.x-letter {
  fill: #ffffff;
  font-size: 22px;
}

.map-caption-strong {
  fill: var(--color-text);
  font-size: 22px;
  font-weight: 700;

  paint-order: stroke;
  stroke: #ffffff;
  stroke-width: 8px;
  stroke-linejoin: round;
}

.map-caption-traffic {
  fill: var(--color-traffic);
}


/* --- Скорости (Екран 3) --- */

.velocity-layer {
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}

.velocity-layer.is-visible {
  opacity: 1;
}

.velocity {
  stroke-width: 6;
  stroke-linecap: round;
  fill: none;
}

.velocity-air {
  stroke: var(--color-drone);
  stroke-dasharray: 14 10;
}

.velocity-wind {
  stroke: var(--color-wind);
}

.velocity-ground {
  stroke: var(--color-drone);
  stroke-width: 8;
}

.velocity-part {
  transition: opacity 0.6s ease;
}

.velocity-part.is-hidden {
  opacity: 0;
}

.velocity-label {
  font-size: 26px;
  font-weight: 700;
  font-style: italic;

  paint-order: stroke;
  stroke: #ffffff;
  stroke-width: 8px;
  stroke-linejoin: round;
}

.velocity-label-air,
.velocity-label-ground {
  fill: var(--color-drone);
}

.velocity-label-wind {
  fill: var(--color-wind);
}

.velocity-label .sub {
  font-size: 18px;
  font-style: normal;
}

.velocity-panel {
  fill: rgba(255, 255, 255, 0.92);
  stroke: var(--color-border);
  stroke-width: 2;
}

.velocity-panel-text {
  fill: var(--color-text-soft);
  font-size: 20px;
}


/* --- Легенда --- */

.legend-wind {
  stroke: var(--color-wind);
  stroke-width: 4;
}

.legend-air {
  stroke: var(--color-drone);
  stroke-width: 4;
  stroke-dasharray: 7 5;
}

.legend-ground {
  stroke: var(--color-drone);
  stroke-width: 5;
}

.legend-trajectory {
  stroke: var(--color-drone);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-dasharray: 1 7;
}

.legend-traffic {
  stroke: var(--color-traffic);
  stroke-width: 12;
  stroke-linecap: round;
  opacity: 0.4;
}


/* ========================================
   НАСОКИ ЗА УЧИТЕЛЯ
======================================== */

.teacher-dialog {
  width: min(44rem, calc(100vw - 2rem));
  max-height: calc(100vh - 2rem);
  padding: 1rem 1.3rem 1.2rem;

  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-small);

  font-size: 0.85rem;
}

.teacher-dialog::backdrop {
  background: rgba(30, 36, 51, 0.45);
}

.teacher-dialog h2 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
}

.teacher-dialog h3 {
  margin: 0.9rem 0 0.3rem;
  font-size: 0.95rem;
}

.teacher-dialog ul {
  margin: 0;
  padding-left: 1.2rem;
}

.teacher-dialog p {
  margin: 0.3rem 0;
}

.dialog-close {
  float: right;
  padding: 0.25rem 0.8rem;

  color: var(--color-primary-dark);
  background: #eceff5;
  border: 0;
  border-radius: 8px;

  font-weight: 700;
}