:root {
  --bg: var(--tg-theme-bg-color, #f4f5f7);
  --card: var(--tg-theme-secondary-bg-color, #ffffff);
  --text: var(--tg-theme-text-color, #111111);
  --muted: var(--tg-theme-hint-color, #747474);
  --accent: var(--tg-theme-button-color, #111111);
  --accent-text: var(--tg-theme-button-text-color, #ffffff);
  --border: rgba(127, 127, 127, 0.22);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button, input { font: inherit; }

.app {
  width: 100%;
  max-width: 620px;
  margin: 0 auto;
  padding: 18px 16px 32px;
}

.screen { display: none; }
.screen.active { display: block; }
.screen.center.active {
  min-height: 65vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

h1 { font-size: 25px; margin: 3px 0; }
h2 { font-size: 22px; margin: 18px 0; }

.trainer-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 17px;
  background: var(--card);
  border-radius: 22px;
  border: 1px solid var(--border);
}

.avatar {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-text);
  display: grid;
  place-items: center;
  font-size: 27px;
  font-weight: 700;
  flex: 0 0 auto;
  background-position: center;
  background-size: cover;
}

.eyebrow, .muted, .bio {
  color: var(--muted);
}

.eyebrow { font-size: 13px; }
.bio { line-height: 1.45; margin: 16px 4px 20px; }

.primary, .ghost, .option, .slot, .danger {
  border: 0;
  border-radius: 15px;
  cursor: pointer;
}

.primary {
  width: 100%;
  min-height: 52px;
  padding: 13px 16px;
  background: var(--accent);
  color: var(--accent-text);
  font-weight: 650;
}

.primary:disabled { opacity: .55; }

.ghost {
  padding: 10px 0;
  background: transparent;
  color: var(--accent);
}

.ghost.small { padding: 8px; font-size: 13px; }

.option-list {
  display: grid;
  gap: 10px;
}

.option {
  width: 100%;
  text-align: left;
  padding: 17px;
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
}

.option strong { display: block; margin-bottom: 4px; }
.option span { color: var(--muted); font-size: 14px; }

.date-box {
  width: 100%;
  margin-bottom: 14px;
  padding: 14px 15px;
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 15px;
}

.date-box input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  padding: 0;
  background: transparent;
  color: var(--text);
}

.slot-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 9px;
}

.slot {
  padding: 14px 8px;
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  font-weight: 600;
}

.slot:active, .option:active { transform: scale(.99); }

.summary {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 4px 16px;
  margin-bottom: 18px;
}

.summary div {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.summary div:last-child { border-bottom: 0; }
.summary span { color: var(--muted); font-size: 13px; }

.section-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 25px;
}

.section-title-row h2 { margin: 0; font-size: 19px; }

.booking-list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.booking-card {
  padding: 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.booking-card strong { display: block; margin-bottom: 5px; }
.booking-card .meta { color: var(--muted); margin-bottom: 10px; }

.danger {
  padding: 9px 11px;
  background: rgba(220, 50, 50, .10);
  color: #d43b3b;
}

.empty {
  padding: 18px;
  text-align: center;
  color: var(--muted);
}

.success-icon {
  width: 74px;
  height: 74px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  margin-bottom: 12px;
  background: var(--accent);
  color: var(--accent-text);
  font-size: 37px;
}

.success-screen .primary { margin-top: 12px; }

.loader {
  width: 34px;
  height: 34px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}

.toast {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 20px;
  max-width: 588px;
  margin: auto;
  padding: 13px 15px;
  background: var(--text);
  color: var(--bg);
  border-radius: 14px;
  text-align: center;
  z-index: 20;
}

.hidden { display: none !important; }

@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 380px) {
  .slot-grid { grid-template-columns: repeat(2, 1fr); }
}

.secondary {
  width: 100%; min-height: 46px; margin-top: 10px; padding: 11px 14px;
  border: 1px solid var(--border); border-radius: 15px;
  background: var(--card); color: var(--text); font-weight: 600; cursor: pointer;
}

.admin-title { margin-top: 0; }
.admin-tabs {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin: 14px 0 18px;
}
.tab {
  border: 1px solid var(--border); border-radius: 13px; padding: 11px 8px;
  background: var(--card); color: var(--text); cursor: pointer;
}
.tab.active { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.admin-panel { display: none; }
.admin-panel.active { display: block; }
.admin-stack { display: grid; gap: 12px; }
.admin-card {
  padding: 15px; background: var(--card); border: 1px solid var(--border); border-radius: 17px;
}
.admin-card h3 { margin: 0 0 14px; }
.admin-card label { display: block; margin: 10px 0; color: var(--muted); font-size: 14px; }
.text-input, .select-input {
  width: 100%; margin-top: 6px; padding: 12px 13px; border: 1px solid var(--border);
  border-radius: 13px; background: var(--bg); color: var(--text); outline: none;
}
.two-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.date-box.compact { margin: 6px 0 0; padding: 11px 12px; }
.switch-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.switch-label { display: flex !important; align-items: center; gap: 8px; color: var(--text) !important; }
.switch-label input { width: 18px; height: 18px; }
.subheading { margin: 22px 2px 10px; font-size: 17px; }
.small-id { color: var(--muted); font-size: 12px; margin-bottom: 10px; }

@media (max-width: 380px) {
  .two-cols { grid-template-columns: 1fr; }
}