:root {
  --bg: #0b1020;
  --bg-2: #121932;
  --panel: rgba(18, 25, 50, 0.9);
  --panel-2: #192242;
  --border: #2b3967;
  --text: #edf2ff;
  --muted: #a4b0d0;
  --accent: #7ea5ff;
  --accent-2: #62e2a1;
  --danger: #ff7b7b;
  --warning: #ffd277;
  --ok: #62e2a1;
  --shadow: 0 18px 38px rgba(0,0,0,.26);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(126,165,255,.18), transparent 28%),
    radial-gradient(circle at top right, rgba(98,226,161,.12), transparent 24%),
    linear-gradient(180deg, #0a0f1d, #10172d 38%, #0b1020 100%);
  color: var(--text);
  min-height: 100vh;
}
button, input, select { font: inherit; }

.app-shell {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--accent-2);
  font-size: 12px;
  margin: 0 0 6px;
}

h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 8px; font-size: clamp(32px, 5vw, 46px); }
.subline { margin-bottom: 0; color: var(--muted); max-width: 840px; }

.badge-cluster { display: flex; gap: 10px; flex-wrap: wrap; }
.badge {
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  border-radius: 999px;
  padding: 10px 14px;
  color: var(--muted);
}
.badge-accent {
  color: var(--accent-2);
  border-color: rgba(98,226,161,.32);
}

.app-grid {
  display: grid;
  grid-template-columns: 330px 1fr;
  gap: 20px;
}

.panel {
  background: linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.015));
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: 20px;
}

.sidebar-panel,
.content-column {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.panel-header { margin-bottom: 16px; }
.panel-header-inline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.field { display: block; margin-bottom: 14px; }
.field span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 14px;
}

input, select {
  width: 100%;
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 15px 16px;
  outline: none;
}

input:focus, select:focus, button:focus {
  outline: 3px solid rgba(126,165,255,.26);
  outline-offset: 2px;
}

.button-column { display: grid; gap: 10px; }
button {
  min-height: 48px;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 12px 16px;
  background: var(--panel-2);
  color: var(--text);
  cursor: pointer;
  transition: transform .12s ease, border-color .12s ease, background .12s ease;
}
button:hover { transform: translateY(-1px); border-color: var(--accent); }
button.primary {
  background: linear-gradient(180deg, #8ca7ff 0%, #6f8dff 100%);
  color: #091121;
  border: none;
  font-weight: 800;
}
button.ghost { background: transparent; }
button.small { min-height: 38px; padding: 8px 12px; font-size: 14px; }

.switch-row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 40px;
  color: var(--text);
}
.switch-row input { width: auto; }
.stack-top { margin-top: 6px; }
.tips-box {
  border: 1px dashed var(--border);
  color: var(--muted);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}
.stat-card,
.dashboard-card {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
}
.stat-label, .meta-label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 8px;
}
.stat-card strong,
.lesson-meta strong,
.dashboard-card strong {
  font-size: clamp(22px, 2vw, 28px);
}

.lesson-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
  margin-bottom: 16px;
}
.lesson-meta > div {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
}

.progress-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.meter-label-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 14px;
}
.meter {
  height: 12px;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
}
.meter-fill {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #7ea5ff, #9ab8ff);
  transition: width .18s ease;
}
.meter-fill.accent { background: linear-gradient(90deg, #62e2a1, #8be7b8); }

.training-panel { position: relative; }
.phase-banner {
  margin-bottom: 16px;
  background: rgba(98,226,161,.08);
  border: 1px solid rgba(98,226,161,.24);
  color: var(--text);
  border-radius: 18px;
  padding: 14px 16px;
}
.session-state {
  border-radius: 999px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  color: var(--muted);
  background: rgba(255,255,255,.03);
}

.target-text {
  min-height: 140px;
  background: #0c1224;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  line-height: 1.9;
  font-size: clamp(22px, 3vw, 28px);
  margin-bottom: 14px;
}
.char { color: #62719e; }
.char.correct { color: var(--ok); }
.char.wrong {
  color: var(--danger);
  background: rgba(255, 123, 123, .14);
  border-radius: 4px;
}
.char.current {
  color: var(--text);
  background: rgba(126,165,255,.20);
  border-radius: 4px;
}

.feedback-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.feedback-box {
  min-height: 88px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
  color: var(--text);
}

.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.dashboard-card.wide { grid-column: 1 / -1; }
.hotspot-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.hotspot-pill {
  border-radius: 999px;
  padding: 8px 12px;
  border: 1px solid rgba(255,123,123,.24);
  background: rgba(255,123,123,.08);
  color: #ffd5d5;
}

.keyboard {
  display: grid;
  gap: 10px;
}
.keyboard-row {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 8px;
}
.key {
  min-height: 52px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  position: relative;
  font-weight: 700;
}
.key.active { outline: 3px solid rgba(126,165,255,.26); }
.key.good { background: rgba(98,226,161,.14); }
.key.bad { background: rgba(255,123,123,.18); }
.key.dimmed { opacity: .32; }
.key.empty { visibility: hidden; }
.legend {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--muted);
}
.legend-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  margin-right: 4px;
}

.finger-left-pinky { background: #ff9f7c; }
.finger-left-ring { background: #ffcf7b; }
.finger-left-middle { background: #ffe87b; }
.finger-left-index { background: #87e8a8; }
.finger-right-index { background: #7ec3ff; }
.finger-right-middle { background: #9ea7ff; }
.finger-right-ring { background: #c494ff; }
.finger-right-pinky { background: #ff9adf; }
.finger-thumb { background: #a7b3cf; }

.muted-small { color: var(--muted); font-size: 13px; }

body.high-contrast {
  --bg: #000000;
  --panel: #0b0b0b;
  --panel-2: #121212;
  --border: #ffffff;
  --text: #ffffff;
  --muted: #e0e0e0;
  --accent: #00b7ff;
  --accent-2: #38ff88;
}
body.focus-mode .sidebar-panel,
body.focus-mode .dashboard-panel,
body.focus-mode .progress-panel,
body.focus-mode .keyboard-panel {
  display: none;
}
body.focus-mode .app-grid { grid-template-columns: 1fr; }

@media (max-width: 1120px) {
  .app-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .lesson-meta, .progress-row, .feedback-grid, .dashboard-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .app-shell { padding: 16px; }
  .topbar { flex-direction: column; }
  .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .keyboard-row { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .key { min-height: 58px; font-size: 14px; }
  .target-text { font-size: 22px; }
  button, input, select { min-height: 50px; }
}