/* TDS ET Prep — custom polish on top of Material */

/* ---- print/PDF button on the cheat sheet ---- */
.tx-print-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  margin: 0 0 1.5em;
  background: #ede7f6;
  color: #4527a0;
  border: 1px solid #9575cd;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
.tx-print-btn:hover {
  background: #d1c4e9;
}

/* ---- print styles: clean PDF output ---- */
@media print {
  /* hide everything that isn't the content */
  .md-sidebar, .md-tabs, .md-header, .md-footer, .md-nav,
  #focus-toggle, .tx-print-btn, .md-top {
    display: none !important;
  }
  .md-main {
    padding: 0 !important;
  }
  .md-content {
    max-width: 100% !important;
  }
  .md-typeset {
    font-size: 11pt;
    line-height: 1.5;
  }
  /* keep the coloured boxes printing in colour */
  .md-typeset .admonition {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #999;
  }
  /* tables print with borders */
  .md-typeset table {
    break-inside: avoid;
    border-collapse: collapse;
  }
  .md-typeset table th,
  .md-typeset table td {
    border: 1px solid #999;
    padding: 0.3em 0.5em;
  }
  /* collapsible sections expand for printing */
  .md-typeset details {
    display: block !important;
  }
  .md-typeset details > summary {
    display: none;
  }
  .md-typeset details > .tabbed-content,
  .md-typeset details > div {
    display: block !important;
  }
  /* page breaks between major sections */
  .md-typeset h2 {
    break-before: auto;
    break-after: avoid;
  }
  /* avoid orphaned headings */
  .md-typeset h2, .md-typeset h3 {
    break-after: avoid;
  }
  /* links show their target in print */
  .md-typeset a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #666;
  }
  /* internal links don't need the URL */
  .md-typeset a[href^="/"]::after,
  .md-typeset a[href^="../"]::after,
  .md-typeset a[href^="#"]::after {
    content: "";
  }
}
body.focus-mode .md-sidebar--primary,
body.focus-mode .md-sidebar--secondary {
  display: none;
}
body.focus-mode .md-grid {
  max-width: 52rem;
}
body.focus-mode .md-tabs {
  display: none;
}

#focus-toggle {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 100;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  background: var(--md-primary-fg-color);
  color: var(--md-primary-bg-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.55;
  transition: opacity 150ms ease;
}
#focus-toggle:hover { opacity: 1; }

/* ---- reading rhythm ---- */
.md-typeset {
  font-size: 0.82rem;
  line-height: 1.7;
}
/* headings: hard-coded colours — Material paints h1 grey by default and
   variable chains proved unreliable; hex values cannot fail */
.md-typeset h1 {
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1a1a2e !important;
}
.md-typeset h2 {
  margin-top: 3.2em;
  margin-bottom: 1em;
  font-weight: 700;
  color: #4527a0 !important;
  padding-bottom: 0.4em;
  border-bottom: 2px solid #673ab7;
}
.md-typeset h3 {
  margin-top: 2.4em;
  margin-bottom: 0.8em;
  font-weight: 600;
  color: #1a1a2e !important;
}
[data-md-color-scheme="slate"] .md-typeset h1,
[data-md-color-scheme="slate"] .md-typeset h3 {
  color: #e0e0e0 !important;
}
[data-md-color-scheme="slate"] .md-typeset h2 {
  color: #b39ddb !important;
  border-bottom-color: #9575cd;
}
/* breathing room between topic blocks */
.md-typeset hr {
  margin: 2.8em 0;
  border-top: 1px dashed var(--md-default-fg-color--lighter);
}

/* ---- the colored boxes get a touch more presence ---- */
.md-typeset .admonition {
  border-radius: 6px;
  border-left-width: 4px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.07);
  font-size: 0.86em;
}
.md-typeset .admonition-title {
  font-weight: 600;
}

/* ---- tables ---- */
.md-typeset table:not([class]) {
  font-size: 0.84em;
}
.md-typeset table:not([class]) th {
  background: var(--md-code-bg-color, rgba(0,0,0,0.04));
}

/* ---- homepage hero ---- */
.tx-hero {
  text-align: center;
  padding: 2.2rem 0 1.4rem;
}
.tx-hero h1 {
  margin-bottom: 0.1em;
  font-size: 2.7rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  /* solid color — always visible in every browser; the style lives in the accent bar */
  color: var(--md-primary-fg-color);
}
/* the gradient accent bar under the headline: the palette's arc, rendered as
   decoration instead of inside the text (gradient text goes invisible when a
   browser mishandles background-clip) */
.tx-hero h1::after {
  content: "";
  display: block;
  width: 7rem;
  height: 6px;
  border-radius: 3px;
  margin: 0.4em auto 0;
  background: linear-gradient(90deg, var(--md-primary-fg-color) 0%, #d81b60 55%, #ff8f00 100%);
}
.tx-hero .tx-sub {
  color: var(--md-typeset-color);
  opacity: 0.75;
  font-size: 1.05em;
  max-width: 44ch;
  margin: 0.9em auto 0;
}
/* pill badges under the headline */
.tx-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin: 1.1em 0 0.4em;
}
.tx-badges span {
  display: inline-block;
  padding: 0.22rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--md-default-fg-color--lighter);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--md-typeset-color);
  opacity: 0.85;
}
.tx-badges span.tx-hot {
  border-color: #ff8f00;
  color: #ff8f00;
  opacity: 1;
}

/* ---- read-time meta bar at the top of pages ---- */
.tx-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.9rem;
  align-items: center;
  width: fit-content;
  max-width: 100%;
  padding: 0.5rem 0.9rem;
  margin: -0.4em 0 2.2em;
  background: var(--md-code-bg-color, rgba(0, 0, 0, 0.045));
  border-left: 3px solid var(--md-primary-fg-color);
  border-radius: 0 5px 5px 0;
  font-size: 0.8rem;
}
.tx-meta strong {
  font-weight: 600;
}

/* ---- PYQ anchor bar — "asked in N places" ---- */
.tx-anchor {
  display: block;
  padding: 0.55rem 0.9rem;
  margin: 1em 0 1.6em;
  border-left: 3px solid var(--md-primary-fg-color);
  background: var(--md-code-bg-color, rgba(0, 0, 0, 0.045));
  border-radius: 0 5px 5px 0;
  font-size: 0.83rem;
  line-height: 1.65;
}
[data-md-color-scheme="slate"] .tx-anchor {
  background: rgba(255, 255, 255, 0.055);
}

/* ---- MCQ question cards ---- */
.tx-question {
  border: 1px solid var(--md-default-fg-color--lightest);
  border-left: 4px solid var(--md-primary-fg-color);
  border-radius: 6px;
  padding: 0.9rem 1.2rem 0.7rem;
  margin: 1em 0 0.6em;
}
.tx-question .tx-qmeta {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.6;
  margin: 0 0 0.5em;
}
.tx-question > p {
  font-weight: 500;
}
/* options: lettered, no bullets, roomy */
.tx-question ul {
  list-style: none;
  padding-left: 0.25rem;
  margin: 0.7em 0 0.3em;
}
.tx-question ul li {
  margin: 0.35em 0;
  padding-left: 1.7rem;
  text-indent: -1.7rem;
}
.tx-question ul li strong:first-child {
  color: var(--md-primary-fg-color);
}
/* the exam's scenario passages */
.tx-scenario {
  border: 1px dashed var(--md-default-fg-color--lighter);
  border-radius: 6px;
  padding: 0.8rem 1.2rem;
  margin: 1em 0;
  opacity: 0.92;
}
/* code snippets from the actual paper: render inline at text height */
.tx-question img,
.tx-scenario img {
  height: 1.5em;
  vertical-align: text-bottom;
  display: inline-block;
}
/* multi-line images (Dockerfiles, code blocks) render at natural size */
.tx-question img.tx-full,
.tx-scenario img.tx-full {
  height: auto;
  max-width: 100%;
  display: block;
  margin: 0.6em auto;
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 4px;
}

/* ---- grade estimator / calculator ---- */
.tx-calc {
  margin: 1.2em 0;
}
/* fixed 3-column grid: 5-6 fields fall into tidy rows */
.tx-calc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.9rem 1rem;
  margin: 1em 0;
}
@media (max-width: 600px) {
  .tx-calc-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
.tx-calc-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
/* labels echo the table headers: small caps with a touch of the primary */
.tx-calc-field span {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--md-primary-fg-color);
}
.tx-calc-field small {
  font-weight: 400;
  text-transform: none;
  letter-spacing: normal;
  opacity: 0.65;
}
.tx-calc-field input {
  width: 100%;
  padding: 0.65rem 0.8rem;
  font: inherit;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--md-typeset-color);
  background: var(--md-default-bg-color);
  border: 1.5px solid var(--md-default-fg-color--lighter);
  border-radius: 8px;
  box-sizing: border-box;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.06);
  transition: border-color 120ms ease, box-shadow 120ms ease;
}
/* cleaner boxes without the browser's number spinners */
.tx-calc-field input::-webkit-outer-spin-button,
.tx-calc-field input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.tx-calc-field input[type="number"] {
  -moz-appearance: textfield;
  appearance: textfield;
}
.tx-calc-field input::placeholder {
  font-weight: 400;
  opacity: 0.45;
}
.tx-calc-field input:focus {
  outline: none;
  border-color: var(--md-primary-fg-color);
  box-shadow: 0 0 0 3px rgba(103, 58, 183, 0.18);
}
.tx-calc-field input.tx-bad {
  border-color: #c62828;
  background: rgba(198, 40, 40, 0.08);
  box-shadow: 0 0 0 3px rgba(198, 40, 40, 0.15);
}
.tx-calc-note {
  font-size: 0.8rem;
  opacity: 0.75;
}
.tx-calc-warn {
  color: #c62828;
  font-size: 0.85rem;
  font-weight: 600;
  margin: 0.6em 0;
}
[data-md-color-scheme="slate"] .tx-calc-warn {
  color: #e57373;
}
.tx-calc-out {
  margin-top: 1.2em;
}
.tx-calc-summary {
  padding: 0.8rem 1.1rem;
  border-left: 4px solid var(--md-primary-fg-color);
  background: var(--md-code-bg-color, rgba(0, 0, 0, 0.045));
  border-radius: 0 6px 6px 0;
  font-size: 0.9rem;
  line-height: 1.8;
  margin: 1em 0;
}
[data-md-color-scheme="slate"] .tx-calc-summary {
  background: rgba(255, 255, 255, 0.055);
}
/* the big grade verdict */
.tx-grade-banner {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1.1rem 1.4rem;
  margin: 1em 0;
  border-radius: 8px;
  background: #ede7f6;
  border: 1px solid #9575cd;
  line-height: 1.5;
}
.tx-grade-banner .tx-grade-letter {
  font-size: 2.6rem;
  font-weight: 800;
  color: #4527a0;
  line-height: 1;
}
.tx-grade-banner.tx-fail {
  background: #ffebee;
  border-color: #ef9a9a;
}
.tx-grade-banner.tx-fail .tx-grade-letter {
  color: #c62828;
}
[data-md-color-scheme="slate"] .tx-grade-banner {
  background: rgba(149, 117, 205, 0.12);
}
[data-md-color-scheme="slate"] .tx-grade-banner .tx-grade-letter {
  color: #b39ddb;
}
[data-md-color-scheme="slate"] .tx-grade-banner.tx-fail {
  background: rgba(239, 154, 154, 0.1);
}
[data-md-color-scheme="slate"] .tx-grade-banner.tx-fail .tx-grade-letter {
  color: #ef9a9a;
}
/* verdict chips in the estimator table */
.tx-chip {
  display: inline-block;
  padding: 0.14rem 0.6rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  white-space: nowrap;
}
.tx-chip-ok {
  background: rgba(46, 125, 50, 0.12);
  color: #2e7d32;
}
.tx-chip-mid {
  background: rgba(230, 81, 0, 0.12);
  color: #ef6c00;
}
.tx-chip-no {
  background: rgba(198, 40, 40, 0.12);
  color: #c62828;
}
[data-md-color-scheme="slate"] .tx-chip-ok {
  color: #81c784;
}
[data-md-color-scheme="slate"] .tx-chip-mid {
  color: #ffb74d;
}
[data-md-color-scheme="slate"] .tx-chip-no {
  color: #e57373;
}
/* the submit button */
.tx-calc-go {
  display: inline-block;
  padding: 0.6rem 1.6rem;
  margin: 0.4em 0 0.8em;
  background: var(--md-primary-fg-color);
  color: var(--md-primary-bg-color);
  border: none;
  border-radius: 6px;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
  transition: opacity 120ms ease, transform 120ms ease;
}
.tx-calc-go:hover {
  opacity: 0.92;
}
.tx-calc-go:active {
  transform: translateY(1px);
}
/* "inputs changed" hint after an edit */
.tx-calc-stale {
  font-size: 0.8rem;
  font-style: italic;
  opacity: 0.7;
  margin: 0.4em 0;
}
/* result tables: full-width, aligned numbers, real borders */
.tx-calc table {
  width: 100%;
  font-size: 0.88em;
  border-collapse: collapse;
}
.tx-calc table th {
  text-align: left;
  padding: 0.45rem 0.7rem;
  background: var(--md-code-bg-color, rgba(0, 0, 0, 0.045));
  border-bottom: 2px solid var(--md-default-fg-color--lighter);
  font-size: 0.82em;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
[data-md-color-scheme="slate"] .tx-calc table th {
  background: rgba(255, 255, 255, 0.07);
}
.tx-calc table td {
  padding: 0.5rem 0.7rem;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
}
.tx-calc td.tx-num {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}
/* verdict-tinted rows: green secured / amber achievable / red out of reach —
   tint + a solid left edge so the verdict reads even on dim screens */
.tx-calc tr.tx-row-ok td {
  background: rgba(46, 125, 50, 0.16);
}
.tx-calc tr.tx-row-ok td:first-child {
  border-left: 4px solid #2e7d32;
}
.tx-calc tr.tx-row-mid td {
  background: rgba(230, 81, 0, 0.15);
}
.tx-calc tr.tx-row-mid td:first-child {
  border-left: 4px solid #ef6c00;
}
.tx-calc tr.tx-row-no td {
  background: rgba(198, 40, 40, 0.13);
}
.tx-calc tr.tx-row-no td:first-child {
  border-left: 4px solid #c62828;
}
[data-md-color-scheme="slate"] .tx-calc tr.tx-row-ok td {
  background: rgba(46, 125, 50, 0.28);
}
[data-md-color-scheme="slate"] .tx-calc tr.tx-row-mid td {
  background: rgba(230, 81, 0, 0.25);
}
[data-md-color-scheme="slate"] .tx-calc tr.tx-row-no td {
  background: rgba(198, 40, 40, 0.22);
}
/* the total row in the grader breakdown */
.tx-calc tr.tx-row-total td {
  background: rgba(103, 58, 183, 0.16);
  border-top: 2px solid #673ab7;
  border-bottom: none;
}
.tx-calc tr.tx-row-total td:first-child {
  border-left: 4px solid #673ab7;
}
[data-md-color-scheme="slate"] .tx-calc tr.tx-row-total td {
  background: rgba(149, 117, 205, 0.28);
}