:root {
  --primary: #e63946;
  --accent: #0d0d0d;
  --bg: #0f1115;
  --card: #171a21;
  --text: #eceef1;
  --muted: #8b93a1;
  --border: #262b35;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}
header.topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 24px; border-bottom: 1px solid var(--border);
}
header.topbar img.coach-logo { height: 32px; width: 32px; border-radius: 6px; object-fit: cover; }
header.topbar .coach-name { font-weight: 700; font-size: 1.1rem; }
.container { max-width: 960px; margin: 0 auto; padding: 24px; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 20px; margin-bottom: 16px;
}
.btn {
  background: var(--primary); color: white; border: none; border-radius: 8px;
  padding: 10px 18px; font-weight: 600; cursor: pointer; font-size: 0.95rem;
}
.btn.secondary { background: transparent; border: 1px solid var(--border); color: var(--text); }
input, textarea, select {
  width: 100%; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--border);
  background: #0d0f13; color: var(--text); font-size: 0.95rem; margin-bottom: 10px;
}
.tabs { display: flex; gap: 8px; border-bottom: 1px solid var(--border); margin-bottom: 20px; flex-wrap: wrap; }
.tabs button {
  background: none; border: none; color: var(--muted); padding: 10px 14px; cursor: pointer; font-size: 0.95rem;
}
.tabs button.active { color: var(--text); border-bottom: 2px solid var(--primary); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.muted { color: var(--muted); font-size: 0.85rem; }
.hidden { display: none !important; }