:root {
  --bg: radial-gradient(circle at 20% 20%, rgba(0, 255, 204, 0.25), transparent 30%),
        radial-gradient(circle at 80% 0%, rgba(255, 105, 180, 0.2), transparent 35%),
        #0b1220;
  --panel: rgba(255, 255, 255, 0.08);
  --panel-strong: rgba(255, 255, 255, 0.14);
  --text: #f3f6ff;
  --muted: #b8c2df;
  --accent: #66ffe6;
  --accent-2: #ff8ec7;
  --accent-3: #7cf29c;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --radius: 18px;
  --glass-blur: blur(12px);
  --font: "Inter", "SF Pro Display", "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
}

body {
  display: flex;
  flex-direction: column;
  padding: clamp(14px, 2vw, 22px);
  gap: 16px;
}

a {
  color: inherit;
  text-decoration: none;
}

header.training-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.07);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 12px 16px;
  backdrop-filter: var(--glass-blur);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.back-btn, .ghost-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text);
  border-radius: 12px;
  padding: 10px 14px;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.back-btn:hover, .ghost-btn:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.16);
}

.back-btn:active, .ghost-btn:active {
  transform: translateY(0);
}

.training-title {
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 800;
  letter-spacing: 0.3px;
}

header .controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sound-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
  font-weight: 700;
}

.sound-toggle:hover { transform: translateY(-1px); }
.sound-toggle:active { transform: translateY(0); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}

.card {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  backdrop-filter: var(--glass-blur);
  position: relative;
  overflow: hidden;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: 0 12px 30px rgba(0,0,0,0.45);
}

.card h3 {
  margin: 0 0 6px;
  font-size: 18px;
}

.card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
  font-size: 14px;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0;
}

.badge {
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  font-size: 12px;
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.actions button,
.quiz-options button,
.text-answer input,
select,
.back-btn,
.ghost-btn,
.sound-toggle {
  min-height: 48px;
  padding: 12px 14px;
  touch-action: manipulation;
}

.toggle-inline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
}

.question-type {
  font-weight: 800;
  letter-spacing: 0.3px;
  margin-bottom: 4px;
  color: var(--muted);
}

.question-prompt {
  line-height: 1.5;
}

.toggle-row {
  display: flex;
  gap: 10px;
  align-items: center;
  margin: 8px 0;
  color: var(--muted);
  font-weight: 600;
}

.rsvp-shell {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.rsvp-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.pill {
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  font-weight: 700;
  color: var(--text);
}

.rsvp-display {
  min-height: 120px;
  display: grid;
  place-items: center;
  font-size: clamp(30px, 6vw, 48px);
  letter-spacing: 0.5px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 18px;
  text-align: center;
}

.rsvp-display .orp { color: var(--accent-2); font-weight: 800; }

.control-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 8px;
}

.control-grid .ghost-btn,
.control-grid .btn,
.control-grid .btn-secondary { width: 100%; }

.btn, .btn-secondary {
  border: none;
  border-radius: 12px;
  padding: 12px 16px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.15s ease;
  color: #0b1220;
}

.btn {
  background: linear-gradient(120deg, var(--accent), var(--accent-3));
  box-shadow: 0 6px 18px rgba(102, 255, 230, 0.35);
}

.btn-secondary {
  background: linear-gradient(120deg, var(--accent-2), #ffc778);
  color: #1b0c1a;
  box-shadow: 0 6px 18px rgba(255, 142, 199, 0.28);
}

.btn:hover, .btn-secondary:hover { transform: translateY(-1px); filter: brightness(1.05); }
.btn:active, .btn-secondary:active { transform: translateY(0); }

.stat-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 6px 0;
  color: var(--muted);
}

.session-log {
  display: grid;
  gap: 10px;
}

.session-log .row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 8px;
  padding: 10px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.progress-bar {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  width: 0;
  transition: width 0.3s ease;
}

input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-size: 15px;
}

.question-card {
  margin-top: 6px;
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
}

.quiz-options { display: grid; gap: 10px; margin-top: 12px; }
.quiz-options button {
  text-align: left;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 12px 14px;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.quiz-options button:hover { transform: translateY(-1px); border-color: rgba(255, 255, 255, 0.25); }
.quiz-options button:active { transform: translateY(0); }
.quiz-options button.correct { border-color: rgba(124, 242, 156, 0.6); background: rgba(124, 242, 156, 0.14); }
.quiz-options button.incorrect { border-color: rgba(255, 142, 199, 0.6); background: rgba(255, 142, 199, 0.14); }

footer.page-footer {
  margin-top: auto;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  padding: 10px;
}

@media (max-width: 640px) {
  header.training-header { flex-direction: column; align-items: flex-start; }
  .session-log .row { grid-template-columns: 1fr; }
}