/* Student learning surfaces use the application's shared theme tokens. */
.student-workspace { display: grid; gap: 1rem; margin-block: 1rem 0; min-width: 0; }
.student-workspace > details { padding: 1rem; border: 1px solid var(--border); border-radius: 12px; background: var(--bg-card); min-width: 0; }
.student-workspace summary, .operator-guide summary { cursor: pointer; font-weight: 600; }
.student-workspace p, .operator-guide p { line-height: 1.6; }

/* ── Dashboard tabs ──
   One horizontal rail that wraps instead of scrolling, so nothing is hidden
   off-screen at 320px and no nested horizontal scroll container is created.
   Labels wrap to two lines on narrow screens rather than shrinking below a
   usable tap size. */
.sw-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 0 0 1rem;
  min-width: 0;
}
.sw-tab {
  flex: 1 1 auto;
  min-width: 0;
  max-width: 100%;
  min-height: 44px;
  padding: .6rem .9rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-card);
  color: var(--text-secondary);
  font: inherit;
  font-size: .85rem;
  font-weight: 600;
  line-height: 1.25;
  text-align: center;
  overflow-wrap: anywhere;
  cursor: pointer;
  touch-action: manipulation;
  transition: border-color var(--duration) var(--ease), background var(--duration) var(--ease), color var(--duration) var(--ease);
}
.sw-tab:hover { border-color: var(--border-accent); color: var(--text-primary); }
.sw-tab[aria-selected="true"] {
  border-color: var(--primary);
  background: var(--accent-subtle);
  color: var(--primary);
}
.sw-tab:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }

/* Panels are plain flow containers: no overflow, no internal scrollbar, so
   iOS never ends up with a second scrolling context inside the page. */
.sw-panels { min-width: 0; }
.sw-panel { min-width: 0; }
.sw-panel[hidden] { display: none; }
.sw-panel:focus-visible { outline: 3px solid var(--primary); outline-offset: 4px; border-radius: 8px; }
/* The learning panels keep the card treatment the accordions had. */
#sw-panel-flow, #sw-panel-insights {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-card);
}
/* The Workspace panel must not clip the sticky action bar or the console. */
#sw-panel-workspace { display: flex; flex-direction: column; flex: 1 0 auto; min-height: 0; }

/* Generic chip row (flow stages, step-through) — not the guide category rail. */
.sg-tabs { display: flex; flex-wrap: wrap; gap: .5rem; margin-block: .75rem; }
.sg-tabs button, .sw-stages button, .sg-content button, .sw-issue button { border: 1px solid var(--border); border-radius: 8px; background: var(--bg-card); color: var(--text-primary); padding: .6rem .75rem; cursor: pointer; min-height: 44px; }
.sg-tabs button[aria-pressed="true"], .sw-stages button[aria-pressed="true"] { outline: 2px solid var(--primary); outline-offset: 1px; }

/* ── Segmented control (presentation mode, chart series, view source) ── */
.seg { display: inline-flex; align-items: center; gap: 2px; border: 1px solid var(--border); border-radius: 10px; background: var(--bg-card); padding: 3px; }
.seg button { border: 0; background: transparent; color: var(--text-secondary); border-radius: 8px; padding: .45rem .85rem; min-height: 40px; cursor: pointer; font-weight: 600; font-size: .82rem; line-height: 1.2; }
.seg button[aria-pressed="true"] { background: var(--primary); color: var(--primary-foreground); }
.seg.sg-series { margin: -.4rem 0 .75rem; }
.seg.sg-series button { white-space: nowrap; }

/* ── Pseudocode Quick Guide header + category rail ── */
.sg-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .75rem; margin-block: .75rem; }
.sg-intro { margin: 0; color: var(--text-secondary); font-size: .85rem; }
.sg-cats { display: flex; gap: .5rem; overflow-x: auto; overscroll-behavior-inline: contain; scrollbar-width: none; padding-block: .25rem; touch-action: pan-x; margin-block: .5rem .75rem; }
.sg-cats::-webkit-scrollbar { display: none; }
.sg-chip { flex: 0 0 auto; border: 1px solid var(--border); border-radius: 999px; padding: .45rem .85rem; min-height: 40px; background: var(--bg-card); color: var(--text-secondary); cursor: pointer; font-weight: 600; font-size: .82rem; transition: border-color var(--duration) var(--ease), background var(--duration) var(--ease), color var(--duration) var(--ease); }
.sg-chip[aria-pressed="true"] { border-color: var(--border-accent); background: var(--accent-subtle); color: var(--primary); }

.sg-content { max-height: 22rem; overflow: auto; overscroll-behavior: contain; padding: .5rem; }
.sg-content > h3 { margin: .5rem 0; }
.sg-expl { color: var(--text-secondary); font-size: .85rem; }
.sg-advanced { margin-block: .75rem .25rem; border: 1px solid var(--border); border-radius: 8px; padding: .5rem .75rem; background: var(--bg-input); }
.sg-advanced summary { font-size: .82rem; color: var(--text-secondary); }
.sg-advanced .sg-expl { margin-block: .4rem 0; }
.sg-adv-list { margin: .4rem 0 0; padding-inline-start: 1.15rem; display: grid; gap: .35rem; }
.sg-adv-list li { line-height: 1.55; font-size: .83rem; color: var(--text-primary); }

/* ── Code surfaces ── */
.student-workspace pre, .operator-guide pre { white-space: pre; overflow: auto; padding: .75rem; background: var(--bg-input); border: 1px solid var(--border); border-radius: 8px; max-height: 24rem; color: var(--text-primary); font-family: var(--font-mono);
font-variant-ligatures: none;
font-feature-settings: "liga" 0, "calt" 0; font-size: .83rem; line-height: 1.55; margin: 0; }
.sg-comparison { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.sg-code { margin: 0 0 .75rem; }
.sg-code figcaption { display: flex; align-items: center; justify-content: space-between; gap: .5rem; margin-bottom: .4rem; }
.sg-code h4 { margin: 0; font-size: .8rem; font-weight: 600; color: var(--text-secondary); }
.sg-insert { display: inline-flex; align-items: center; gap: .35rem; border: 1px solid var(--border); border-radius: 6px; background: var(--bg-card); color: var(--text-primary); padding: .35rem .7rem; min-height: 36px; cursor: pointer; font-size: .8rem; font-weight: 600; }
.sg-insert svg.lucide { width: .85rem; height: .85rem; }
.sg-op-example { margin-top: .75rem; }
.sg-op-example .sg-insert { margin-top: .25rem; }

.sg-operators { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: .5rem; }
.sg-operators button { text-align: start; transition: border-color var(--duration) var(--ease), background var(--duration) var(--ease); }
.sg-operators button:hover, .sg-operators button:focus-visible { border-color: var(--border-accent); background: var(--accent-subtle); }
.sg-operators code { display: block; padding-top: .5rem; color: var(--text-secondary); }

.sg-tip:not(:empty), .sw-issue { border-inline-start: 3px solid var(--primary); padding: .75rem; margin-block: .5rem; }
.sg-context:not([hidden]) { display: flex; align-items: center; gap: .75rem; padding: .75rem; border-inline-start: 3px solid var(--primary); overflow-wrap: anywhere; }
.sg-context button { background: var(--bg-card); color: var(--text-primary); border: 1px solid var(--border); border-radius: 6px; min-height: 44px; padding: .5rem; }
.sw-stages { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: .5rem; margin-block: 1rem; }
.sw-stages button { display: grid; gap: .4rem; text-align: start; }
.sw-stages small { color: var(--text-secondary); }
.sw-tokens { display: flex; flex-wrap: wrap; gap: .5rem; max-height: 20rem; overflow: auto; }
.sw-tokens span { padding: .5rem; border: 1px solid var(--border); border-radius: 6px; }
.sw-tree { overflow: auto; padding: 1rem; max-height: 24rem; }
.sw-tree li { padding: .3rem; border-inline-start: 1px solid var(--border); overflow-wrap: anywhere; }
.sw-kpis { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .75rem; margin-block: 1rem; }
.sw-kpis > div { display: grid; gap: .5rem; border: 1px solid var(--border); padding: 1rem; border-radius: 8px; overflow-wrap: anywhere; }
.sw-kpis strong { font-size: 1.35rem; }
.sw-kpis span { font-weight: 600; }

/* ── Learning Progress card ── */
.sw-chart { margin-top: 1rem; min-width: 0; }
.sw-chart.an-chart-system .an-chart-title { font-size: 16px; }
.sw-chart .an-info-badge { appearance: none; background: transparent; border: 0; padding: .2rem; margin: 0; cursor: help; display: inline-flex; }
.sw-chart .an-info-badge svg.lucide { width: .95rem; height: .95rem; }
/* Chart toggles live in a wrapping flex row so the segmented controls never
   squish against the plot on narrow cards (a shadcn-style controls bar). */
.an-chart-controls { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; margin: -.25rem 0 .75rem; min-width: 0; }
.an-chart-controls .seg { flex: 0 0 auto; }
.an-chart-controls .seg.sg-series { margin: 0; }
/* Secondary series sit visually behind the primary one to cut chart clutter. */
.an-progress-aux { opacity: .6; }
.an-progress-aux-dot { opacity: .55; }
.sg-legend { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem .85rem; margin-top: .75rem; }
.sg-legend-chip { display: inline-flex; align-items: center; gap: .4rem; border: 1px solid var(--border); border-radius: 999px; background: var(--bg-card); color: var(--text-secondary); padding: .35rem .7rem; min-height: 36px; cursor: pointer; font-weight: 600; font-size: .78rem; transition: border-color var(--duration) var(--ease), background var(--duration) var(--ease), color var(--duration) var(--ease); }
.sg-legend-chip[aria-pressed="true"] { border-color: var(--border-accent); background: var(--accent-subtle); color: var(--text-primary); }
.sg-legend-dot { width: .65rem; height: .65rem; border-radius: 50%; flex: 0 0 auto; }
.sg-mastery-note { font-size: .75rem; color: var(--muted-foreground); font-style: italic; }
.an-chart-empty { color: var(--text-secondary); font-size: .85rem; padding: .5rem 0; }
.sw-glossary { margin-block: .5rem 0; border: 1px solid var(--border); border-radius: 8px; padding: .5rem .75rem; font-size: .85rem; }
.sw-glossary summary { font-size: .82rem; color: var(--text-secondary); }
.sw-glossary p { margin-block: .4rem 0; }
.sw-data-table { margin-top: .5rem; }
.sw-data-table summary { font-size: .82rem; color: var(--text-secondary); }
.sw-table { overflow-x: auto; }
.sw-table table { width: 100%; border-collapse: collapse; }
.sw-table td, .sw-table th { padding: .5rem; text-align: start; border-bottom: 1px solid var(--border); }
.student-workspace button:disabled { opacity: .7; cursor: default; }

@media (max-width: 767px) {
    .sw-stages { grid-template-columns: 1fr; }
    .sw-stages button { grid-template-columns: 1fr; }
    .sw-kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .sg-comparison { grid-template-columns: 1fr; }
    .sg-toolbar { flex-direction: column; align-items: flex-start; }
    .seg.sg-series button { padding: .4rem .6rem; font-size: .78rem; }
    .an-chart-controls { align-items: flex-start; }
    .student-workspace > details { padding: .75rem; }
    .sw-chart { padding: .9rem; }
    /* Two tabs per row keeps every label readable at 320px without a rail. */
    .sw-tabs { gap: .4rem; }
    .sw-tab { flex: 1 1 calc(50% - .4rem); font-size: .8rem; padding: .55rem .5rem; }
    #sw-panel-flow, #sw-panel-insights { padding: .75rem; }
}
@media (max-width: 359px) { .sw-kpis { grid-template-columns: 1fr; } }