/*
  Kodislovo trainer shell — shared layout for active trainers (phase 3).
  Requires ui.css (theme tokens) loaded first.
*/

:root {
  --trainer-topbar-h: 64px;
  --trainer-mobile-bar-h: 76px;
}

body.trainer-body {
  padding-bottom: 0;
  overflow-x: clip;
}

.trainer-page,
.trainer-page .kd-panel,
.trainer-page .reading-layout,
.trainer-page .reading-main,
.trainer-page .reading-side {
  max-width: 100%;
  min-width: 0;
}

.trainer-page [id^="step-"] {
  scroll-margin-top: calc(var(--trainer-topbar-h) + 72px);
}

.trainer-page.kd-page {
  padding-top: 20px;
  padding-bottom: 48px;
}

.trainer-page .kd-hero {
  padding-bottom: 12px;
}

.trainer-page .kd-hero h1 {
  font-size: clamp(26px, 4vw, 42px);
  margin-top: 6px;
}

.trainer-page .kd-hero p {
  font-size: 16px;
  max-width: 720px;
}

/* Horizontal stepper */
.trainer-stepper {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.trainer-stepper li {
  list-style: none;
  margin: 0;
  padding: 0;
}

.trainer-stepper a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 92%, transparent);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.trainer-stepper a:hover {
  border-color: var(--border-strong);
  color: var(--text);
}

.trainer-stepper a.is-active {
  border-color: color-mix(in srgb, var(--primary) 40%, var(--border));
  background: color-mix(in srgb, var(--primary-soft) 80%, var(--card));
  color: var(--text);
}

.trainer-stepper-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--primary) 18%, var(--card));
  font-size: 11px;
  font-weight: 800;
}

.trainer-stepper a.is-active .trainer-stepper-num {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--white);
}

/* Score / progress strip (OGE, etc.) */
.trainer-score-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 16px;
  margin-bottom: 16px;
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--primary-soft) 56%, var(--card));
}

.trainer-score-bar strong {
  color: var(--text);
  font-size: 15px;
}

.trainer-score-bar span {
  color: var(--muted);
  font-size: 14px;
}

.trainer-score-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.trainer-score-pill {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  font-size: 12px;
  font-weight: 700;
  color: var(--text);
}

.trainer-score-pill.ok {
  border-color: color-mix(in srgb, var(--success) 40%, var(--border));
  color: var(--success);
}

/* Sticky mobile action bar */
.trainer-mobile-bar {
  display: none;
}

@media (max-width: 720px) {
  body.trainer-body.trainer-mobile-pad {
    padding-bottom: calc(var(--trainer-mobile-bar-h) + 16px + env(safe-area-inset-bottom, 0px));
  }

  .trainer-mobile-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 25;
    min-height: var(--trainer-mobile-bar-h);
    padding: 12px 16px calc(12px + env(safe-area-inset-bottom, 0px));
    border-top: 1px solid var(--border);
    background: color-mix(in srgb, var(--header-bg) 94%, transparent);
    backdrop-filter: blur(16px);
    box-shadow: 0 -8px 28px color-mix(in srgb, var(--ks-bg) 40%, transparent);
  }

  .trainer-mobile-bar-status {
    flex: 1;
    min-width: 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.35;
  }

  .trainer-mobile-bar .kd-button {
    flex: 0 0 auto;
    min-width: 140px;
  }
}

/* Reading: sidebar as accordion on narrow screens */
@media (max-width: 980px) {
  .reading-side-accordion .reading-side-panel {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--card);
    overflow: hidden;
  }

  .reading-side-accordion .reading-side-panel + .reading-side-panel {
    margin-top: 10px;
  }

  .reading-side-accordion .reading-side-panel > summary {
    cursor: pointer;
    padding: 16px 18px;
    font-family: var(--ks-font-serif);
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    list-style: none;
    user-select: none;
  }

  .reading-side-accordion .reading-side-panel > summary::-webkit-details-marker {
    display: none;
  }

  .reading-side-accordion .reading-side-panel > summary::after {
    content: "+";
    float: right;
    font-size: 20px;
    font-weight: 400;
    color: var(--muted);
  }

  .reading-side-accordion .reading-side-panel[open] > summary::after {
    content: "−";
  }

  .reading-side-accordion .reading-side-panel > .reading-panel {
    border: 0;
    border-radius: 0;
    box-shadow: none;
    padding-top: 0;
  }

  .reading-side-accordion .reading-side-panel > .reading-panel > h2:first-child {
    display: none;
  }
}

@media (min-width: 981px) {
  .reading-side-accordion .reading-side-panel > summary {
    display: none;
  }

  .reading-side-accordion .reading-side-panel {
    display: block;
  }
}

/* Mobile: full-width action buttons, compact page */
@media (max-width: 720px) {
  .trainer-page.kd-page {
    padding-left: 12px;
    padding-right: 12px;
  }

  .trainer-stepper {
    gap: 6px;
    margin-bottom: 16px;
  }

  .trainer-stepper a {
    padding: 0 10px;
    font-size: 12px;
  }

  .trainer-page .reading-actions,
  .trainer-page .reading-mini-actions,
  .trainer-page .kd-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .trainer-page .reading-actions .kd-button,
  .trainer-page .reading-mini-actions .kd-button,
  .trainer-page .kd-actions .kd-button {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
    white-space: normal;
    text-align: center;
    line-height: 1.25;
    padding-left: 12px;
    padding-right: 12px;
  }

  .trainer-page .reading-panel {
    padding: 16px;
  }

  .trainer-page .reading-text-wrap,
  .trainer-page .reading-block {
    padding: 14px;
  }

  .trainer-page .reading-text-box {
    padding: 14px;
    font-size: 16px;
    overflow-wrap: anywhere;
  }

  .trainer-page .reading-completion-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .trainer-page .kd-section-head {
    flex-direction: column;
    align-items: stretch;
  }

  .trainer-page .kd-section-head p {
    text-align: left;
    max-width: none;
  }
}

@media (max-width: 400px) {
  .trainer-stepper a {
    flex: 1 1 calc(50% - 6px);
    justify-content: center;
    min-width: 0;
  }

  .trainer-stepper-num {
    display: none;
  }
}