/* «Робо-комната»: тёмно-синяя комната с неоновой подсветкой, панели как пульты с заклёпками. */
:root {
  --room: #0b1030;
  --panel: rgba(34, 44, 102, 0.92);
  --panel-2: rgba(20, 24, 64, 0.94);
  --screen: #070b22;
  --text: #eef3ff;
  --muted: #a9b4e0;
  --cyan: #00e5ff;
  --pink: #ff4fa3;
  --lime: #7dff6b;
  --yellow: #ffd23f;
  --violet: #7c4dff;
  --orange: #ff8a3d;
  --danger: #ff6b6b;
  --glow-cyan: 0 0 18px rgba(0, 229, 255, 0.45);
  --font-head: "Russo One", "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html { background: var(--room); }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--room);
  color: var(--text);
  font: 18px/1.5 "Nunito", "Segoe UI", system-ui, -apple-system, sans-serif;
  overflow-x: hidden;
}

/* ---------- Комната (фон) ---------- */

.room {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 15% -5%, rgba(124, 77, 255, 0.55), transparent 55%),
    radial-gradient(ellipse at 90% 5%, rgba(0, 229, 255, 0.35), transparent 50%),
    radial-gradient(ellipse at 50% 110%, rgba(255, 79, 163, 0.35), transparent 55%),
    linear-gradient(#0b1030, #141a4a 55%, #1d1255);
}

/* Светящийся сеточный пол, который «едет» на нас. */
.floor {
  position: absolute;
  left: -60%;
  right: -60%;
  bottom: -8%;
  height: 52%;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.4) 2px, transparent 2px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.4) 2px, transparent 2px);
  background-size: 64px 64px;
  transform: perspective(380px) rotateX(62deg);
  transform-origin: bottom;
  -webkit-mask-image: linear-gradient(transparent, #000 65%);
  mask-image: linear-gradient(transparent, #000 65%);
  animation: floor-move 5s linear infinite;
}
@keyframes floor-move { to { background-position: 0 64px; } }

/* Лента мигающих огоньков под потолком. */
.leds {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 10px;
  background:
    radial-gradient(circle, var(--cyan) 0 3px, transparent 4px) 0 50% / 36px 10px repeat-x,
    linear-gradient(#1a2156, #10143a);
  box-shadow: 0 2px 14px rgba(0, 229, 255, 0.5);
  animation: leds-blink 1.6s steps(2) infinite;
}
@keyframes leds-blink { 50% { filter: hue-rotate(140deg) brightness(1.3); } }

.gear {
  position: absolute;
  opacity: 0.16;
  filter: grayscale(1) brightness(2);
  animation: spin 18s linear infinite;
}
.g1 { font-size: 220px; left: -70px; top: 18%; }
.g2 { font-size: 140px; right: -40px; top: 8%; animation-direction: reverse; animation-duration: 12s; }
.g3 { font-size: 90px; right: 8%; bottom: 30%; animation-duration: 9s; }
@keyframes spin { to { transform: rotate(360deg); } }

.spark {
  position: absolute;
  color: var(--yellow);
  font-size: 20px;
  animation: twinkle 2.4s ease-in-out infinite;
}
.s1 { left: 12%; top: 12%; }
.s2 { right: 22%; top: 22%; animation-delay: 0.8s; color: var(--cyan); }
.s3 { left: 30%; top: 40%; animation-delay: 1.6s; color: var(--pink); }
@keyframes twinkle { 50% { opacity: 0.15; transform: scale(0.6); } }

.drone {
  position: absolute;
  top: 14%;
  left: -80px;
  font-size: 40px;
  animation: fly 26s linear infinite;
}
@keyframes fly {
  0% { transform: translate(0, 0); }
  50% { transform: translate(60vw, 30px); }
  100% { transform: translate(120vw, 0); }
}

/* ---------- Раскладка ---------- */

.app {
  position: relative;
  z-index: 1;
  /* Во всю ширину окна; по краям — небольшой отступ (на телефоне 16px). */
  margin: 0 auto;
  padding: 22px clamp(16px, 2.5vw, 40px) 28px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.top { display: flex; align-items: center; gap: 12px; }
.title { flex: 1; min-width: 0; }
h1 {
  margin: 0;
  font: 30px/1.1 var(--font-head);
  letter-spacing: 1px;
  background: linear-gradient(90deg, var(--cyan), var(--lime) 50%, var(--yellow));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 10px rgba(0, 229, 255, 0.35));
}
.subtitle {
  margin: 2px 0 0;
  color: var(--pink);
  font: 13px/1.2 var(--font-head);
  letter-spacing: 3px;
  text-transform: uppercase;
}

/* ---------- Робо-сова ---------- */

.owl {
  width: 78px;
  height: 78px;
  flex: none;
  filter: drop-shadow(0 0 12px rgba(0, 229, 255, 0.45));
  animation: hover 3s ease-in-out infinite;
}
@keyframes hover { 50% { transform: translateY(-5px); } }
.owl .eyes { transform-origin: 60px 48px; animation: blink 4.5s infinite; }
@keyframes blink { 0%, 94%, 100% { transform: scaleY(1); } 97% { transform: scaleY(0.1); } }
.owl .antenna { animation: antenna 1.2s ease-in-out infinite; }
@keyframes antenna { 50% { fill: var(--cyan); } }
.owl .led { animation: led 1.8s steps(2) infinite; }
.owl .l2 { animation-delay: 0.6s; }
.owl .l3 { animation-delay: 1.2s; }
@keyframes led { 50% { opacity: 0.25; } }
.owl .beak { transform-origin: 60px 66px; }
/* Сова говорит — шевелится клюв; думает — огоньки бегают быстро. */
body.speaking .owl .beak { animation: talk 0.28s ease-in-out infinite alternate; }
@keyframes talk { to { transform: scaleY(1.45); } }
body.thinking .owl .led { animation-duration: 0.4s; }
body.thinking .owl .eyes { animation: look 1.2s ease-in-out infinite; }
@keyframes look { 25% { transform: translateX(-3px); } 75% { transform: translateX(3px); } }

/* ---------- Кто вошёл ---------- */

.who {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px 6px 12px;
  background: var(--panel-2);
  border: 2px solid rgba(0, 229, 255, 0.4);
  border-radius: 999px;
  box-shadow: var(--glow-cyan);
}
.who-avatar { font-size: 24px; line-height: 1; }
.who-name { font-weight: 800; max-width: 9em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- Панели-пульты ---------- */

.panel {
  position: relative;
  padding: 20px;
  background: linear-gradient(160deg, var(--panel), var(--panel-2));
  border: 2px solid rgba(0, 229, 255, 0.5);
  border-radius: 22px;
  box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.25), var(--glow-cyan), inset 0 0 30px rgba(124, 77, 255, 0.18);
}
/* Заклёпки по углам. */
.panel::before {
  content: "";
  position: absolute;
  inset: 8px;
  pointer-events: none;
  background:
    radial-gradient(circle, #9fb0d8 0 2.5px, transparent 3.5px) top left / 10px 10px no-repeat,
    radial-gradient(circle, #9fb0d8 0 2.5px, transparent 3.5px) top right / 10px 10px no-repeat,
    radial-gradient(circle, #9fb0d8 0 2.5px, transparent 3.5px) bottom left / 10px 10px no-repeat,
    radial-gradient(circle, #9fb0d8 0 2.5px, transparent 3.5px) bottom right / 10px 10px no-repeat;
}
.panel-title { margin: 0 0 12px; font: 18px/1.3 var(--font-head); color: var(--cyan); letter-spacing: 0.5px; }

.screen { display: flex; flex-direction: column; gap: 16px; }
.screen-title {
  margin: 6px 0 0;
  text-align: center;
  font: 24px/1.25 var(--font-head);
  color: var(--text);
  text-shadow: 0 0 14px rgba(124, 77, 255, 0.9);
}
.hint { margin: 0 0 12px; font-size: 20px; font-weight: 700; text-align: center; }
.muted { color: var(--muted); margin: 0; }

/* ---------- Выбор ученика ---------- */

.profiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}
.profile {
  --c: var(--cyan);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 22px 14px 18px;
  color: var(--text);
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.08), rgba(0, 0, 0, 0.25)), var(--panel-2);
  border: 3px solid var(--c);
  border-radius: 26px;
  box-shadow: 0 0 22px color-mix(in srgb, var(--c) 55%, transparent), 0 8px 0 rgba(0, 0, 0, 0.35);
  transition: transform 0.15s;
}
.profile:nth-child(2n) { --c: var(--pink); }
.profile:nth-child(3n) { --c: var(--lime); }
.profile:hover, .profile:focus-visible { transform: translateY(-4px) scale(1.02); }
.profile-avatar {
  display: grid;
  place-items: center;
  width: 96px;
  height: 96px;
  font-size: 58px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.35), transparent 60%), color-mix(in srgb, var(--c) 35%, #10143a);
  box-shadow: inset 0 0 0 4px rgba(255, 255, 255, 0.15), 0 0 18px color-mix(in srgb, var(--c) 60%, transparent);
  animation: hover 3s ease-in-out infinite;
}
.profile:nth-child(2n) .profile-avatar { animation-delay: 1.5s; }
.profile-name { font: 24px/1.2 var(--font-head); }
.profile-go { color: var(--c); font-weight: 800; font-size: 15px; }

.login-panel { max-width: 460px; width: 100%; margin: 0 auto; text-align: center; }
.back { margin-top: 12px; }

/* ---------- Пульт ученика ---------- */

.hello-panel { display: flex; align-items: center; gap: 16px; }
.hello-avatar {
  display: grid;
  place-items: center;
  flex: none;
  width: 72px;
  height: 72px;
  font-size: 44px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.35), transparent 60%), #3a2a8a;
  box-shadow: 0 0 18px rgba(124, 77, 255, 0.8);
}
.hello { margin: 0; font: 26px/1.2 var(--font-head); }
.badge {
  display: inline-block;
  margin: 6px 0 0;
  padding: 2px 12px;
  font-weight: 800;
  color: #10143a;
  background: var(--yellow);
  border-radius: 999px;
}
.badge:empty { display: none; }

.gauges { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.gauge {
  --c: var(--cyan);
  padding: 10px 6px;
  text-align: center;
  background: var(--screen);
  border: 2px solid color-mix(in srgb, var(--c) 70%, transparent);
  border-radius: 16px;
  box-shadow: inset 0 0 14px color-mix(in srgb, var(--c) 30%, transparent);
}
.gauge:nth-child(2) { --c: var(--pink); }
.gauge:nth-child(3) { --c: var(--lime); }
.gauge:nth-child(4) { --c: var(--yellow); }
.gauge-icon { font-size: 22px; }
.gauge-value {
  display: block;
  font: 30px/1.1 var(--font-head);
  color: var(--c);
  text-shadow: 0 0 12px var(--c);
}
.gauge-label { display: block; font-size: 13px; line-height: 1.2; color: var(--muted); }
.stats-sub { margin: 14px 0 6px; font-weight: 800; color: var(--muted); font-size: 15px; }

.bars { display: grid; gap: 8px; }
.bar { display: grid; grid-template-columns: 9.5em 1fr 2em; align-items: center; gap: 8px; font-size: 15px; }
.bar-track { height: 14px; background: var(--screen); border-radius: 999px; overflow: hidden; border: 1px solid rgba(255, 255, 255, 0.12); }
.bar-fill { height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--violet), var(--cyan)); box-shadow: 0 0 10px var(--cyan); }
.bar.russian .bar-fill { background: linear-gradient(90deg, var(--violet), var(--pink)); box-shadow: 0 0 10px var(--pink); }
.bar.any .bar-fill { background: linear-gradient(90deg, #2c9b5a, var(--lime)); box-shadow: 0 0 10px var(--lime); }
.bar-count { font-weight: 800; text-align: right; }

.recent { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; font-size: 15px; }
.recent li { padding: 6px 10px; background: rgba(0, 0, 0, 0.22); border-radius: 10px; border-left: 4px solid var(--cyan); }
.recent li.russian { border-left-color: var(--pink); }
.recent li.any { border-left-color: var(--lime); }
.recent .when { color: var(--muted); }

/* ---------- Кнопки ---------- */

button {
  font: inherit;
  border: 0;
  border-radius: 16px;
  cursor: pointer;
  color: var(--text);
}
button:disabled { opacity: 0.45; cursor: default; }
button:focus-visible, input:focus-visible { outline: 3px solid var(--yellow); outline-offset: 2px; }

.subjects { display: grid; gap: 14px; }
.subject {
  --c: var(--cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 18px;
  font: 22px/1.2 var(--font-head);
  background: linear-gradient(180deg, color-mix(in srgb, var(--c) 40%, #1b2160), color-mix(in srgb, var(--c) 18%, #10143a));
  border: 3px solid var(--c);
  box-shadow: 0 6px 0 color-mix(in srgb, var(--c) 45%, #000), 0 0 22px color-mix(in srgb, var(--c) 45%, transparent);
  transition: transform 0.1s;
}
.subject.russian { --c: var(--pink); }
.subject.any { --c: var(--lime); }
.subject:hover { transform: translateY(-2px); }
.subject:active { transform: translateY(4px); box-shadow: 0 2px 0 color-mix(in srgb, var(--c) 45%, #000); }
.subject-icon { font-size: 30px; }

.tiny {
  padding: 6px 12px;
  font-size: 14px;
  font-weight: 800;
  background: rgba(255, 255, 255, 0.08);
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
}

.go {
  padding: 12px 18px;
  font-weight: 800;
  color: #10143a;
  background: linear-gradient(180deg, #8ff6ff, var(--cyan));
  box-shadow: 0 4px 0 #0a7c9c, var(--glow-cyan);
}

/* ---------- Урок ---------- */

.lesson { flex: 1; display: flex; flex-direction: column; gap: 14px; min-height: 0; }

/* Вкладки урока: «Задание» и «Объяснение». */
.lesson-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.lesson-tab {
  padding: 12px 10px;
  font: 800 18px/1.2 var(--font-head);
  color: var(--muted);
  background: rgba(0, 0, 0, 0.3);
  border: 2px solid rgba(0, 229, 255, 0.3);
  border-radius: 14px;
  cursor: pointer;
}
.lesson-tab.active { color: #06263a; background: linear-gradient(160deg, #a8f4ff, #4fd8ff); border-color: var(--cyan); box-shadow: var(--glow-cyan); }
.lesson-tab.has-task:not(.active)::after { content: " ●"; color: var(--yellow); }

/* Вкладка «Задание»: только упражнение, клеточки и итог проверки. */
.exercise-view {
  flex: 1;
  min-height: 260px;
  max-height: 55vh;
  overflow-y: auto;
  padding: 14px;
  background: radial-gradient(ellipse at top, #121a46, var(--screen));
  border: 3px solid rgba(255, 210, 63, 0.6);
  border-radius: 22px;
}
.exercise-view .sheet { margin-top: 0; font-size: 1.4em; }
.exercise-view .sheet::before { content: "📝 Задание"; }
.exercise-view .check-sheet { padding: 12px 22px; font-size: 18px; }
.exercise-empty { padding: 30px 10px; text-align: center; }
.exercise-empty-title { margin: 0 0 8px; font: 800 20px/1.3 var(--font-head); }
.exercise-verdict { margin: 4px 0 0; padding: 10px 14px; font-weight: 700; line-height: 1.45; background: rgba(124, 77, 255, 0.35); border: 1px solid rgba(190, 160, 255, 0.5); border-radius: 14px; }
.task-link { display: block; margin: 8px 0; padding: 9px 14px; font-weight: 800; color: #1b2145; background: #fffdf3; border: 2px solid var(--yellow); border-radius: 10px; cursor: pointer; }

/* Чат — экран монитора с лёгкими полосами развёртки. */
.chat {
  flex: 1;
  min-height: 260px;
  max-height: 55vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px;
  background:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.025) 0 2px, transparent 2px 4px),
    radial-gradient(ellipse at top, #121a46, var(--screen));
  border: 3px solid rgba(0, 229, 255, 0.55);
  border-radius: 22px;
  box-shadow: 0 0 0 5px #1a2156, var(--glow-cyan), inset 0 0 40px rgba(0, 0, 0, 0.6);
}

.bubble {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: 18px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  animation: pop 0.2s ease-out;
}
@keyframes pop { from { transform: scale(0.94); opacity: 0; } }
.bubble.student {
  align-self: flex-end;
  color: #06263a;
  background: linear-gradient(160deg, #a8f4ff, #4fd8ff);
  border-bottom-right-radius: 6px;
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.35);
}
.bubble.tutor {
  align-self: flex-start;
  background: linear-gradient(160deg, rgba(124, 77, 255, 0.55), rgba(76, 40, 170, 0.55));
  border: 1px solid rgba(190, 160, 255, 0.5);
  border-bottom-left-radius: 6px;
  box-shadow: 0 0 12px rgba(124, 77, 255, 0.4);
}
.bubble.tutor::before { content: "🦉 "; }
.bubble img {
  display: block;
  max-width: 100%;
  max-height: 260px;
  margin-bottom: 6px;
  border-radius: 12px;
}
/* «Листок»: пример или упражнение как в учебнике — столбик остаётся столбиком */
.sheet {
  display: block;
  margin: 8px 0;
  padding: 10px 14px;
  overflow-x: auto;
  color: #1b2145;
  background: #fffdf3;
  background-image: linear-gradient(rgba(60, 90, 200, 0.14) 1px, transparent 1px);
  background-size: 100% 1.6em;
  border: 2px solid var(--yellow);
  border-radius: 10px;
  font: 600 1.25em/1.6 "Consolas", "Courier New", ui-monospace, monospace;
  /* Пробелы и строки сохраняются (столбик ровный), а длинный текст задачи переносится, а не уезжает вправо. */
  white-space: pre-wrap;
  overflow-wrap: break-word;
  box-shadow: 0 0 10px rgba(255, 210, 63, 0.35);
}
.sheet::before {
  content: "📖 Как в книжке";
  display: block;
  margin-bottom: 4px;
  color: #7a6a1c;
  font: 700 0.7em/1.2 var(--font-head);
}
/* Клеточка для ответа внутри листка */
.sheet .cell {
  box-sizing: content-box;
  width: 2.6ch;
  height: 1.25em;
  margin: 0 1px;
  padding: 0 0.2ch;
  font: inherit;
  text-align: center;
  vertical-align: baseline;
  color: #0b3d91;
  background: #fff;
  border: 2px dashed #7b8fd8;
  border-radius: 6px;
  outline: none;
}
.sheet .cell.letter { width: 1.4ch; }
.sheet .cell:focus { border-style: solid; border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.35); }
.sheet .cell:disabled { color: #0b3d91; background: #f2f4ff; }
.sheet .cell.ok { border: 2px solid #2fae4e; background: #dcf8e2; }
.sheet .cell.bad { border: 2px solid #e5484d; background: #ffe1e1; }
/* Кнопка «✏️ решить в столбик» у примера в задании */
.sheet .col-open { margin: 0 6px 0 2px; padding: 0 4px; font-size: 0.8em; line-height: 1.2; vertical-align: baseline; background: #fff3c4; border: 1px solid #e0b93a; border-radius: 6px; cursor: pointer; }
.sheet .cell.from-column { border-style: solid; }

/* Тетрадная сетка «в столбик»: клетка как в школьной тетради */
.column-area { margin: 0 0 10px; padding: 12px 14px; color: #1b2145; background: #fffdf3; border: 2px solid var(--yellow); border-radius: 12px; }
.col-title { margin: 0 0 8px; font: 800 18px/1.3 var(--font-head); color: #4a3d0c; }
.column-grid {
  --col-cell: 2.1rem;
  display: grid;
  grid-auto-rows: var(--col-cell);
  width: max-content;
  padding: 4px;
  background-color: #fff;
  background-image: linear-gradient(rgba(60, 90, 200, 0.18) 1px, transparent 1px), linear-gradient(90deg, rgba(60, 90, 200, 0.18) 1px, transparent 1px);
  background-size: var(--col-cell) var(--col-cell);
  font: 700 1.45rem/1 "Consolas", "Courier New", ui-monospace, monospace;
}
.col-digit, .col-sign { display: grid; place-items: center; }
.col-sign { color: #6b3fd1; transform: translateY(-50%); } /* как в учебнике: знак слева между числами */
.col-line { align-self: center; border-bottom: 3px solid #1b2145; }
.col-box { box-sizing: border-box; width: 100%; height: 100%; padding: 0; font: inherit; text-align: center; color: #0b3d91; background: rgba(255, 255, 255, 0.6); border: 2px dashed #7b8fd8; border-radius: 4px; outline: none; }
.col-box:focus { border-style: solid; border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.35); }
.col-dot { padding: 0; font: 900 1.6rem/1 sans-serif; color: #e5484d; background: transparent; border: 1px dotted rgba(60, 90, 200, 0.35); border-radius: 50%; cursor: pointer; }
.col-dot.on { border-color: transparent; }
.column-area .small { margin: 8px 0; color: #5a5f80; }
.col-actions .go, .col-actions .secondary { flex: 0 1 auto; padding: 10px 16px; }
/* Уравнение — запись решения в тетради */
.eq-keys { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 8px; }
.eq-keys button { min-width: 2.6rem; padding: 6px 10px; font: 800 1.2rem/1 "Consolas", "Courier New", monospace; color: #1b2145; background: #fff; border: 2px solid #b9a6f5; border-radius: 8px; cursor: pointer; }
.eq-sheet {
  padding: 8px 12px;
  background-color: #fff;
  background-image: linear-gradient(rgba(60, 90, 200, 0.15) 1px, transparent 1px);
  background-size: 100% 2.4rem;
  border-radius: 8px;
  font: 700 1.3rem/2.4rem "Consolas", "Courier New", ui-monospace, monospace;
}
.eq-given { margin: 0; color: #1b2145; }
.eq-lines { display: grid; gap: 2px; }
.eq-line { width: min(22ch, 100%); height: 2.2rem; padding: 0 6px; font: inherit; color: #0b3d91; background: rgba(255, 255, 255, 0.7); border: 2px dashed #7b8fd8; border-radius: 6px; outline: none; }
.eq-line:focus { border-style: solid; border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.35); }
.eq-line::placeholder { color: #aab3d8; font-weight: 400; }
.column-area .eq-more { justify-self: start; flex: none; width: auto; min-height: 0; margin: 4px 0; padding: 2px 12px; font: 700 14px/1.6 var(--font-head); }
.eq-rule { margin: 6px 0 2px; padding-top: 2px; border-top: 3px solid #1b2145; width: min(22ch, 100%); font: 800 1rem/1.6 var(--font-head); color: #4a3d0c; }
.column-area .secondary { color: #3a2f6b; background: #ece6ff; border-color: #b9a6f5; }
.check-sheet { display: block; margin: 0 0 8px; padding: 9px 16px; font-size: 16px; }
.bubble.typing:empty::after { content: "🦉 Сова думает… ⚙️"; color: var(--muted); }
.bubble.typing:empty::before { content: none; }

.quick { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.chip {
  padding: 9px 6px;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.25;
  background: rgba(255, 210, 63, 0.14);
  border: 2px solid rgba(255, 210, 63, 0.6);
  border-radius: 14px;
}
.chip:hover:not(:disabled) { background: rgba(255, 210, 63, 0.26); }

.controls { display: flex; flex-direction: column; gap: 12px; align-items: stretch; }

/* Микрофон — большая «реакторная» кнопка. */
.mic {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 20px;
  font: 22px/1.2 var(--font-head);
  color: #fff;
  background: linear-gradient(180deg, #ffa66b, var(--orange) 45%, var(--pink));
  border-radius: 22px;
  box-shadow: 0 7px 0 #a02c66, 0 0 26px rgba(255, 79, 163, 0.55);
}
.mic:active:not(:disabled) { transform: translateY(4px); box-shadow: 0 3px 0 #a02c66, 0 0 26px rgba(255, 79, 163, 0.55); }
.mic-icon { font-size: 30px; }
.mic.listening {
  background: linear-gradient(180deg, #ff8f8f, #e8344f);
  box-shadow: 0 7px 0 #7d1426, 0 0 0 0 rgba(255, 80, 100, 0.7);
  animation: ring 1.1s ease-out infinite;
}
@keyframes ring { to { box-shadow: 0 7px 0 #7d1426, 0 0 0 22px rgba(255, 80, 100, 0); } }

.photo {
  padding: 14px;
  font-size: 20px;
  font-weight: 800;
  background: rgba(125, 255, 107, 0.12);
  border: 2px solid var(--lime);
  box-shadow: 0 0 14px rgba(125, 255, 107, 0.3);
}

.status { min-height: 1.5em; margin: 0; text-align: center; color: var(--muted); }

.text-form { display: flex; gap: 8px; }
.text-form input {
  flex: 1;
  min-width: 0;
  padding: 12px 14px;
  font: inherit;
  color: var(--text);
  background: var(--screen);
  border: 2px solid rgba(0, 229, 255, 0.45);
  border-radius: 16px;
}
.text-form input::placeholder { color: #7480b0; }

.secondary {
  padding: 12px 16px;
  font-weight: 800;
  background: rgba(255, 255, 255, 0.07);
  border: 2px solid rgba(255, 255, 255, 0.22);
}
.row { display: flex; gap: 8px; }
.row .secondary { flex: 1; }

.warning { color: var(--danger); text-align: center; }

/* ---------- Плашка «Установить приложение» ---------- */

.install {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: linear-gradient(90deg, rgba(124, 77, 255, 0.55), rgba(255, 79, 163, 0.45));
  border: 2px solid rgba(255, 255, 255, 0.25);
  border-radius: 18px;
  box-shadow: 0 0 18px rgba(124, 77, 255, 0.5);
}
.install-icon { font-size: 28px; }
.install-text { flex: 1; font-weight: 800; font-size: 15px; line-height: 1.3; }
.install-button { padding: 9px 14px; }

/* Установленное приложение во весь экран: отступ под «чёлку» и полосу состояния телефона. */
@supports (padding: env(safe-area-inset-top)) {
  .app {
    padding-top: max(22px, env(safe-area-inset-top));
    padding-bottom: max(28px, env(safe-area-inset-bottom));
  }
}

/* ---------- Задание от родителей и звёзды ---------- */

.task-panel { border-color: var(--pink); box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.25), 0 0 22px rgba(255, 79, 163, 0.45); }
.task-panel .panel-title { color: var(--pink); }
.task-text { margin: 0 0 14px; font-size: 21px; font-weight: 800; }
.task-panel .row button { flex: 1; padding: 14px 10px; }
.stars { margin-bottom: 14px; padding: 12px 14px; background: rgba(255, 210, 63, 0.1); border: 2px solid rgba(255, 210, 63, 0.55); border-radius: 16px; }
.stars-line { margin: 0; font-weight: 800; font-size: 18px; }
.stars-count { font: 26px/1 var(--font-head); color: var(--yellow); text-shadow: 0 0 12px var(--yellow); }
.stars-track { height: 16px; margin: 10px 0 6px; background: var(--screen); border-radius: 999px; overflow: hidden; }
.stars-fill { height: 100%; border-radius: 999px; background: linear-gradient(90deg, #ffb03a, var(--yellow)); box-shadow: 0 0 12px var(--yellow); transition: width 0.6s; }
.stars-note { margin: 0; color: var(--muted); font-size: 15px; }
.stars-note.win { color: var(--lime); font-weight: 800; }

.homework-panel { border-color: var(--lime); box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.25), 0 0 22px rgba(125, 255, 107, 0.4); }
.homework-panel .panel-title { color: var(--lime); }
.homework-list { display: grid; gap: 10px; }
.hw-item { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 8px; padding: 10px 12px; background: rgba(0, 0, 0, 0.25); border-radius: 14px; border-left: 4px solid var(--lime); }
.hw-item.done { opacity: 0.65; }
.hw-subject { display: block; font-size: 14px; color: var(--muted); font-weight: 800; }
.hw-text { font-weight: 800; }
.hw-where { display: block; font-size: 1.15em; font-weight: 800; color: var(--yellow); }
.hw-where + .hw-text { font-weight: 600; font-size: 0.95em; }
.hw-item button { padding: 9px 10px; font-size: 15px; }
@media (max-width: 560px) { .hw-item { grid-template-columns: 1fr 1fr; } .hw-item > div { grid-column: 1 / -1; } }

/* ---------- Время занятий и перерыв ---------- */

.today-line { margin: 8px 0 0; font-weight: 800; font-size: 15px; color: var(--lime); }
.today-line.blocked { color: var(--yellow); }
.break-dialog { text-align: center; }
.break-icon { font-size: 64px; animation: hover 1.2s ease-in-out infinite; }
.break-timer { margin: 6px 0 16px; font: 44px/1 var(--font-head); color: var(--cyan); text-shadow: 0 0 14px var(--cyan); }

/* ---------- Окно «Голос» ---------- */

.hello-text { flex: 1; min-width: 0; }
.voice-dialog {
  width: min(460px, calc(100vw - 32px));
  padding: 22px;
  color: var(--text);
  background: linear-gradient(160deg, #222c66, #141840);
  overflow: visible;
}
.voice-dialog::backdrop { background: rgba(5, 8, 28, 0.78); backdrop-filter: blur(3px); }
.field { display: grid; gap: 6px; margin-bottom: 14px; font-weight: 800; }
.field select {
  width: 100%;
  padding: 11px 12px;
  font: inherit;
  color: var(--text);
  background: var(--screen);
  border: 2px solid rgba(0, 229, 255, 0.45);
  border-radius: 14px;
}
.range { display: flex; align-items: center; gap: 10px; font-weight: 400; }
.range input { flex: 1; accent-color: var(--cyan); height: 28px; }
.small { font-size: 14px; margin-bottom: 14px; }
.voice-dialog .row .secondary, .voice-dialog .row .go { flex: 1; padding: 12px 8px; }
.page-homework-list { display: grid; gap: 8px; margin-bottom: 16px; }
.page-homework-list button { padding: 12px; text-align: left; font-weight: 800; }
/* Только окошко страницы: style.css подключает и окно родителя, его поля не трогаем. */
#page-dialog .field input {
  width: 100%;
  padding: 11px 12px;
  font: inherit;
  font-size: 1.2em;
  color: var(--text);
  background: rgba(0, 0, 0, 0.35);
  border: 2px solid rgba(0, 229, 255, 0.45);
  border-radius: 12px;
}

/* ---------- Страница учебника: полоса с рисунком в задании и окно «вся страница» ---------- */
.page-strip { display: block; margin: 6px 0; white-space: normal; }
.page-strip canvas { display: block; width: 100%; max-width: 900px; height: auto; border: 2px solid #d9c27a; border-radius: 8px; background: #fff; cursor: zoom-in; }
.page-strip-open { margin-top: 4px; padding: 4px 12px; font: 700 15px/1.4 var(--font-head); color: #3a2f6b; background: #ece6ff; border: 2px solid #b9a6f5; border-radius: 999px; cursor: pointer; }
.exercise-page { margin: 0 0 8px; padding: 8px 16px; font-size: 15px; color: #fff; background: linear-gradient(180deg, #5b4cc9, #3c2f9c); border: 2px solid #a99bff; }
.book-page-dialog { width: min(1100px, calc(100vw - 32px)); max-height: 94vh; }
.book-page-bar { align-items: center; flex-wrap: wrap; }
.book-page-bar .panel-title { flex: 1; margin: 0; }
.book-page-bar .secondary, .book-page-bar .go { flex: none; }
.book-page-scroll { margin-top: 10px; max-height: 78vh; overflow: auto; background: #fff; border-radius: 10px; }
#book-page-img { display: block; width: 100%; cursor: zoom-in; }
#book-page-img.zoomed { width: 200%; max-width: none; cursor: zoom-out; }

/* ---------- Урок: компактные яркие кнопки (на широком экране не растягиваются в полосы) ---------- */
#lesson .lesson-tabs { display: flex; flex-wrap: wrap; gap: 10px; }
#lesson .lesson-tab {
  min-height: 48px;
  padding: 10px 22px;
  font-size: 18px;
  color: #fff;
  background: linear-gradient(180deg, #4a3fb0, #33288a);
  border: 3px solid #8f7dff;
  box-shadow: 0 4px 0 #1d1660;
}
#lesson .lesson-tab:hover { filter: brightness(1.15); }
#lesson .lesson-tab.active { color: #06263a; background: linear-gradient(180deg, #c4f8ff, #33dcff); border-color: #fff; box-shadow: 0 4px 0 #0a7c9c, var(--glow-cyan); }
#lesson .lesson-tab.has-task:not(.active)::after { color: #ffe066; }

#lesson .quick { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
#lesson .chip {
  min-height: 46px;
  padding: 8px 18px;
  font-size: 17px;
  color: #2a1a00;
  background: linear-gradient(180deg, #fff1a8, #ffcf3a);
  border: 3px solid #fff7d1;
  border-radius: 999px;
  box-shadow: 0 4px 0 #b88a00, 0 0 12px rgba(255, 210, 63, 0.45);
}
#lesson .chip:hover:not(:disabled) { background: linear-gradient(180deg, #fff6c8, #ffd95c); }
#lesson .chip:active:not(:disabled) { transform: translateY(3px); box-shadow: 0 1px 0 #b88a00; }

#lesson .controls { align-items: center; gap: 12px; }
#lesson .mic {
  width: min(420px, 100%);
  min-height: 64px;
  padding: 12px 28px;
  font-size: 22px;
  border: 3px solid #ffe3f0;
  border-radius: 999px;
}
#lesson .mic-icon { font-size: 28px; }
#lesson .status { margin: 0; min-height: 1.2em; }

#lesson .text-form { width: min(900px, 100%); align-items: stretch; }
#lesson .text-form input { min-height: 48px; border-width: 3px; }
#lesson .photo {
  flex: none;
  width: 52px;
  min-height: 48px;
  padding: 0;
  font-size: 24px;
  color: #10301a;
  background: linear-gradient(180deg, #c8ffb8, #6fe85a);
  border: 3px solid #eaffe3;
  border-radius: 14px;
  box-shadow: 0 4px 0 #2f8a22;
}
#lesson .text-form .go { flex: none; width: 52px; padding: 0; font-size: 22px; border: 3px solid #e6fdff; }

#lesson .lesson-tools { width: 100%; justify-content: flex-end; flex-wrap: wrap; }
#lesson .lesson-tools .secondary {
  flex: none;
  min-height: 44px;
  padding: 8px 16px;
  font-size: 15px;
  color: #fff;
  background: linear-gradient(180deg, #5b4cc9, #3c2f9c);
  border: 2px solid #a99bff;
  box-shadow: 0 3px 0 #22195f;
}
#lesson .lesson-tools .secondary:hover { filter: brightness(1.15); }

/* ---------- Телефон ---------- */

@media (max-width: 560px) {
  .owl { width: 60px; height: 60px; }
  h1 { font-size: 21px; white-space: nowrap; }
  .subtitle { font-size: 10px; letter-spacing: 1px; white-space: nowrap; }
  .who-name, .who-avatar { display: none; }
  .who { padding: 4px; }
  .gauges { grid-template-columns: repeat(2, 1fr); }
  .bar { grid-template-columns: 7.5em 1fr 2em; }
  .chip { font-size: 14px; }
  #lesson .lesson-tab { flex: 1; padding: 8px 10px; font-size: 16px; }
  #lesson .chip { padding: 6px 12px; font-size: 15px; }
  #lesson .lesson-tools { justify-content: center; }
}

/* Кому мешает движение — комната стоит на месте. */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}