/* ============================================================
   Insight Bay — Practice Portal
   Extends the main site's design system (../../assets/css/styles.css)
   with portal-specific tokens, layouts, cards and a full dark mode.

   Conventions:
     :root        → light tokens (defaults inherited from main site)
     [data-theme="dark"] → dark overrides
     .ib-*        → portal namespace (mirrors the main site)
   ============================================================ */

:root {
  /* Portal-specific tokens layered on top of styles.css */
  --ibp-radius: 16px;
  --ibp-radius-lg: 22px;
  --ibp-radius-sm: 10px;
  --ibp-card-bg: #FFFFFF;
  --ibp-card-border: #E8E1D2;
  --ibp-card-hover-border: #C9C0AE;
  --ibp-soft-bg: #FAF7F2;
  --ibp-deep-bg: #EEE9DD;
  --ibp-text: var(--ib-ink, #20201E);
  --ibp-text-soft: var(--ib-ink-soft, #4A4742);
  --ibp-text-muted: var(--ib-ink-muted, #807A72);
  --ibp-line: #E2DCCF;
  --ibp-line-strong: #C9C0AE;
  --ibp-accent: var(--ib-accent, #C96442);
  --ibp-accent-hover: var(--ib-accent-hover, #B25535);
  --ibp-accent-soft: var(--ib-accent-soft, #F3DDCF);
  --ibp-gold: var(--ib-gold, #B58A3A);
  --ibp-success: var(--ib-success, #4F7A4A);
  --ibp-track: #ECE5D5;
  --ibp-fill: var(--ibp-accent);
  --ibp-shadow: 0 1px 2px rgba(32,32,30,.05), 0 12px 32px -16px rgba(32,32,30,.18);
  --ibp-shadow-hover: 0 6px 18px -4px rgba(32,32,30,.10), 0 24px 48px -16px rgba(32,32,30,.22);
  --ibp-font-display: 'Courier Prime', 'Special Elite', 'Courier New', Courier, monospace;
  --ibp-font-ui: 'Inter', 'Helvetica Neue', Arial, system-ui, sans-serif;
}

[data-theme="dark"] {
  --ibp-card-bg: #1E1D1B;
  --ibp-card-border: #2D2B27;
  --ibp-card-hover-border: #3F3C36;
  --ibp-soft-bg: #1A1917;
  --ibp-deep-bg: #161513;
  --ibp-text: #F2EFE8;
  --ibp-text-soft: #C9C4BB;
  --ibp-text-muted: #8E8A82;
  --ibp-line: #2D2B27;
  --ibp-line-strong: #3F3C36;
  --ibp-accent: #E8845E;
  --ibp-accent-hover: #F19770;
  --ibp-accent-soft: #3D2A20;
  --ibp-gold: #D9B265;
  --ibp-success: #7AAE73;
  --ibp-track: #2A2925;
  --ibp-shadow: 0 1px 2px rgba(0,0,0,.4), 0 12px 32px -16px rgba(0,0,0,.6);
  --ibp-shadow-hover: 0 6px 18px -4px rgba(0,0,0,.45), 0 24px 48px -16px rgba(0,0,0,.7);
}

/* ----- Portal body ----- */
.ib-portal-body {
  background: var(--ibp-soft-bg);
  color: var(--ibp-text);
  font-family: var(--ibp-font-ui);
  min-height: 100vh;
  transition: background-color .25s ease, color .25s ease;
}

.ib-skip-link {
  position: absolute; left: -9999px; top: 1rem;
  background: var(--ibp-text); color: var(--ibp-card-bg);
  padding: .5rem 1rem; border-radius: 999px; z-index: 999;
}
.ib-skip-link:focus { left: 1rem; }

.ib-noscript {
  max-width: 480px; margin: 4rem auto; padding: 2rem;
  background: var(--ibp-card-bg); border-radius: var(--ibp-radius);
  border: 1px solid var(--ibp-card-border);
}

/* ============================================================
   Header
   ============================================================ */
.ib-portal-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--ibp-soft-bg) 92%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--ibp-line);
}
.ib-portal-header__inner {
  max-width: 1240px; margin-inline: auto;
  padding: .9rem 1.25rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1.5rem; align-items: center;
}
.ib-portal-brand {
  display: inline-flex; align-items: center; gap: .65rem;
  color: var(--ibp-text);
}
.ib-portal-brand:hover { color: var(--ibp-text); }
.ib-portal-brand__mark {
  width: 36px; height: 36px; border-radius: 9px;
  display: inline-grid; place-items: center;
  background: var(--ibp-text); color: var(--ibp-card-bg);
  font-family: var(--ibp-font-display); font-weight: 700;
  font-size: .95rem; letter-spacing: .02em;
}
.ib-portal-brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.ib-portal-brand__text strong {
  font-family: var(--ibp-font-display);
  font-weight: 700; font-size: 1rem;
}
.ib-portal-brand__sub {
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ibp-text-muted);
}

.ib-portal-nav {
  display: flex; gap: 1.4rem; justify-content: center;
}
.ib-portal-nav a {
  color: var(--ibp-text-soft);
  font-size: .92rem; font-weight: 500;
}
.ib-portal-nav a:hover { color: var(--ibp-accent); }

.ib-portal-header__actions {
  display: inline-flex; gap: .55rem; align-items: center;
}

.ib-icon-btn {
  width: 38px; height: 38px;
  display: inline-grid; place-items: center;
  background: transparent;
  border: 1px solid var(--ibp-line);
  border-radius: 999px;
  color: var(--ibp-text-soft);
  cursor: pointer;
  transition: background .18s, color .18s, border-color .18s;
}
.ib-icon-btn:hover {
  border-color: var(--ibp-line-strong);
  color: var(--ibp-text);
  background: var(--ibp-deep-bg);
}
.ib-icon-btn svg { width: 18px; height: 18px; }

@media (max-width: 720px) {
  .ib-portal-header__inner { grid-template-columns: auto auto; }
  .ib-portal-nav { display: none; }
}

/* ============================================================
   Buttons (additive — main site supplies the base .ib-btn)
   ============================================================ */
.ib-btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .8rem 1.3rem;
  border-radius: 999px;
  font-family: var(--ibp-font-ui);
  font-weight: 500; font-size: .95rem;
  line-height: 1;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .18s, color .18s, border-color .18s, transform .15s;
}
.ib-btn:hover { transform: translateY(-1px); }
.ib-btn:focus-visible { outline: 2px solid var(--ibp-accent); outline-offset: 2px; }
.ib-btn[disabled] {
  opacity: .5; cursor: not-allowed; transform: none;
}

.ib-btn-lg  { padding: 1rem 1.6rem; font-size: 1rem; }
.ib-btn-sm  { padding: .55rem .95rem; font-size: .85rem; }

.ib-btn-primary {
  background: var(--ibp-text); color: var(--ibp-card-bg);
}
.ib-btn-primary:hover {
  background: var(--ibp-accent); color: #fff;
}

.ib-btn-accent {
  background: var(--ibp-accent); color: #fff;
}
.ib-btn-accent:hover { background: var(--ibp-accent-hover); }

.ib-btn-ghost {
  background: transparent;
  color: var(--ibp-text);
  border-color: var(--ibp-line-strong);
}
.ib-btn-ghost:hover {
  background: var(--ibp-deep-bg);
  border-color: var(--ibp-text);
}

.ib-btn svg { width: 16px; height: 16px; }

/* ============================================================
   Layout primitives
   ============================================================ */
.ib-container {
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: 1.25rem;
}
@media (min-width: 768px) {
  .ib-container { padding-inline: 2rem; }
}

.ib-stage {
  padding-block: 3rem 5rem;
  min-height: 60vh;
}
@media (min-width: 768px) {
  .ib-stage { padding-block: 4rem 6rem; }
}

.ib-section {
  padding-block: 4.5rem;
}
.ib-section--soft { background: var(--ibp-deep-bg); }

.ib-eyebrow {
  display: inline-block;
  font-family: var(--ibp-font-display);
  font-weight: 700;
  font-size: .76rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--ibp-accent);
  margin-bottom: 1rem;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--ibp-font-display);
  color: var(--ibp-text);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -.005em;
  margin: 0;
}
h1 { font-size: clamp(2rem, 4.2vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin-bottom: 1.2rem; }
h3 { font-size: clamp(1.05rem, 1.7vw, 1.25rem); }

p {
  color: var(--ibp-text-soft);
  line-height: 1.65;
  margin: 0 0 1rem;
}

a { color: var(--ibp-accent); text-decoration: none; }
a:hover { color: var(--ibp-accent-hover); }

/* ============================================================
   Hero (home view)
   ============================================================ */
.ib-hero {
  max-width: 1180px;
  margin: 0 auto;
  padding: 4rem 1.5rem 5rem;
  text-align: left;
}
@media (min-width: 768px) {
  .ib-hero { padding: 6rem 2rem 7rem; }
}
.ib-hero__title {
  font-size: clamp(2.1rem, 4.6vw, 3.6rem);
  max-width: 22ch;
  margin-bottom: 1.25rem;
}
.ib-hero__lead {
  font-size: 1.1rem;
  max-width: 56ch;
  margin-bottom: 2rem;
}
.ib-hero__actions {
  display: flex; flex-wrap: wrap; gap: .8rem;
  margin-bottom: 3rem;
}
.ib-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem 2rem;
  list-style: none;
  padding: 1.25rem 0 0;
  border-top: 1px solid var(--ibp-line);
  margin: 0;
}
.ib-hero__stats li {
  color: var(--ibp-text-muted);
  font-size: .92rem;
  font-family: var(--ibp-font-display);
}
.ib-hero__stats strong {
  display: block;
  color: var(--ibp-text);
  font-size: 1.6rem;
  font-weight: 700;
}

/* Steps grid */
.ib-steps {
  list-style: none; padding: 0; margin: 2rem 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}
.ib-step {
  position: relative;
  display: flex; gap: 1rem; align-items: flex-start;
  padding: 1.5rem;
  background: var(--ibp-card-bg);
  border: 1px solid var(--ibp-card-border);
  border-radius: var(--ibp-radius);
}
.ib-step__num {
  font-family: var(--ibp-font-display);
  font-weight: 700;
  color: var(--ibp-accent);
  font-size: .95rem;
  letter-spacing: .18em;
}
.ib-step__icon {
  width: 36px; height: 36px; flex: none;
  display: inline-grid; place-items: center;
  background: var(--ibp-accent-soft);
  color: var(--ibp-accent);
  border-radius: 10px;
}
.ib-step__icon svg { width: 18px; height: 18px; }
.ib-step__body h3 { margin-bottom: .35rem; }
.ib-step__body p { margin: 0; font-size: .92rem; color: var(--ibp-text-muted); }

/* Feature grid */
.ib-feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}
.ib-feature {
  padding: 1.5rem;
  background: var(--ibp-card-bg);
  border: 1px solid var(--ibp-card-border);
  border-radius: var(--ibp-radius);
  transition: border-color .2s, transform .2s;
}
.ib-feature:hover { border-color: var(--ibp-line-strong); transform: translateY(-2px); }
.ib-feature__icon {
  width: 36px; height: 36px;
  display: inline-grid; place-items: center;
  background: var(--ibp-deep-bg); color: var(--ibp-text);
  border-radius: 10px; margin-bottom: .9rem;
}
.ib-feature__icon svg { width: 18px; height: 18px; }
.ib-feature p { margin: .35rem 0 0; font-size: .92rem; color: var(--ibp-text-muted); }

/* CTA strip */
.ib-cta-strip {
  background: var(--ibp-text);
  color: var(--ibp-card-bg);
  padding: 3rem 0;
}
.ib-cta-strip__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  justify-content: space-between;
}
.ib-cta-strip h2 { color: var(--ibp-card-bg); margin-bottom: .25rem; }
.ib-cta-strip p { color: rgba(255,255,255,.7); margin: 0; }
.ib-cta-strip .ib-btn-primary { background: var(--ibp-card-bg); color: var(--ibp-text); }
.ib-cta-strip .ib-btn-primary:hover { background: var(--ibp-accent); color: #fff; }

[data-theme="dark"] .ib-cta-strip { background: #0E0D0C; }

/* ============================================================
   Breadcrumb
   ============================================================ */
.ib-breadcrumb { margin-bottom: 2rem; }
.ib-breadcrumb__list {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-wrap: wrap; align-items: center;
  gap: .5rem;
  font-family: var(--ibp-font-display);
  font-size: .82rem;
  letter-spacing: .04em;
}
.ib-breadcrumb__item a { color: var(--ibp-text-muted); }
.ib-breadcrumb__item a:hover { color: var(--ibp-accent); }
.ib-breadcrumb__item.is-current { color: var(--ibp-text); }
.ib-breadcrumb__sep { color: var(--ibp-text-muted); display: inline-flex; }
.ib-breadcrumb__sep svg { width: 14px; height: 14px; }

/* ============================================================
   Stage header
   ============================================================ */
.ib-stage-header {
  margin-bottom: 2.5rem;
  max-width: 760px;
}
.ib-stage-header__lead {
  font-size: 1.05rem;
  color: var(--ibp-text-soft);
  margin-top: .65rem;
}

.ib-stage-footnote {
  margin-top: 3rem;
  font-size: .92rem;
  color: var(--ibp-text-muted);
  border-top: 1px solid var(--ibp-line);
  padding-top: 1.5rem;
}

/* ============================================================
   Cards (curriculum / grade / topic)
   ============================================================ */
.ib-region { margin-bottom: 3rem; }
.ib-region__heading {
  display: flex; align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1rem;
}
.ib-region__heading h2 { font-size: 1.25rem; margin: 0; }
.ib-region__count {
  font-family: var(--ibp-font-display);
  font-size: .8rem; letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ibp-text-muted);
}

.ib-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}
.ib-card-grid--lg {
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.25rem;
}
.ib-card-grid--tight {
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: .85rem;
}

.ib-card {
  position: relative;
  display: flex; flex-direction: column;
  padding: 1.5rem;
  background: var(--ibp-card-bg);
  border: 1px solid var(--ibp-card-border);
  border-radius: var(--ibp-radius);
  box-shadow: var(--ibp-shadow);
  color: var(--ibp-text);
  transition: transform .2s ease, border-color .2s, box-shadow .2s;
  overflow: hidden;
}
.ib-card:hover {
  transform: translateY(-3px);
  border-color: var(--ibp-card-hover-border);
  box-shadow: var(--ibp-shadow-hover);
  color: var(--ibp-text);
}
.ib-card:focus-visible {
  outline: 2px solid var(--ibp-accent);
  outline-offset: 2px;
}

.ib-card__icon {
  width: 44px; height: 44px; flex: none;
  display: inline-grid; place-items: center;
  background: var(--ibp-deep-bg);
  color: var(--ibp-text);
  border-radius: 11px;
  margin-bottom: 1rem;
  transition: background .2s, color .2s;
}
.ib-card:hover .ib-card__icon {
  background: var(--ibp-accent-soft);
  color: var(--ibp-accent);
}
.ib-card__icon svg { width: 22px; height: 22px; }

.ib-card__badge {
  position: absolute; top: 1rem; right: 1rem;
  background: var(--ibp-accent-soft); color: var(--ibp-accent);
  font-family: var(--ibp-font-display);
  font-size: .7rem; letter-spacing: .12em;
  padding: .3rem .55rem; border-radius: 999px;
  text-transform: uppercase;
}

.ib-card__body { flex: 1; display: flex; flex-direction: column; }
.ib-card__eyebrow {
  font-family: var(--ibp-font-display);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ibp-text-muted);
  margin-bottom: .35rem;
}
.ib-card__title { margin-bottom: .4rem; font-size: 1.1rem; }
.ib-card__desc {
  margin: 0 0 1rem;
  font-size: .92rem;
  color: var(--ibp-text-muted);
  flex: 1;
}
.ib-card__stats {
  list-style: none; padding: 0; margin: 0 0 1rem;
  display: flex; flex-wrap: wrap; gap: .35rem;
}
.ib-card__stats li {
  font-family: var(--ibp-font-display);
  font-size: .75rem;
  letter-spacing: .04em;
  padding: .3rem .6rem;
  background: var(--ibp-deep-bg);
  color: var(--ibp-text-soft);
  border-radius: 999px;
}
.ib-card__cta {
  display: inline-flex; align-items: center; gap: .35rem;
  font-family: var(--ibp-font-display);
  font-size: .78rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ibp-accent);
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px dashed var(--ibp-line);
}
.ib-card__cta-arrow {
  width: 14px; height: 14px;
  transition: transform .2s ease;
}
.ib-card:hover .ib-card__cta-arrow { transform: translateX(4px); }

.ib-card--feature { padding: 2rem; }
.ib-card--feature .ib-card__title { font-size: 1.4rem; }
.ib-card--feature .ib-card__desc { font-size: 1rem; }

/* ============================================================
   Progress
   ============================================================ */
.ib-progress { display: flex; flex-direction: column; gap: .35rem; }
.ib-progress__track {
  width: 100%; height: 8px;
  background: var(--ibp-track);
  border-radius: 999px;
  overflow: hidden;
}
.ib-progress__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--ibp-accent), var(--ibp-gold));
  border-radius: 999px;
  transition: width .3s ease;
}
.ib-progress__label {
  font-family: var(--ibp-font-display);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--ibp-text-muted);
}

/* Circular ring */
.ib-ring-wrap {
  position: relative;
  display: inline-grid; place-items: center;
}
.ib-ring__track { stroke: var(--ibp-track); }
.ib-ring__fill { stroke: var(--ibp-accent); transition: stroke-dashoffset .4s ease; }
.ib-ring__center {
  position: absolute;
  font-family: var(--ibp-font-display);
  font-size: .85rem;
  color: var(--ibp-text);
}

/* Difficulty stars */
.ib-stars { display: inline-flex; gap: 4px; }
.ib-stars__dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--ibp-track);
}
.ib-stars__dot.is-on {
  background: var(--ibp-accent);
}

/* ============================================================
   Mastery level ladder (level view)
   ============================================================ */
.ib-ladder {
  list-style: none;
  padding: 0; margin: 0;
  display: flex; flex-direction: column;
  gap: 1rem;
  position: relative;
}
.ib-ladder::before {
  content: '';
  position: absolute;
  left: 28px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--ibp-accent), var(--ibp-line-strong) 50%, var(--ibp-line));
  border-radius: 2px;
  z-index: 0;
}
@media (max-width: 700px) {
  .ib-ladder::before { display: none; }
}

.ib-ladder__item { position: relative; z-index: 1; }

.ib-level-card {
  display: grid;
  grid-template-columns: 60px 1fr;
  align-items: stretch;
  background: var(--ibp-card-bg);
  border: 1px solid var(--ibp-card-border);
  border-radius: var(--ibp-radius);
  box-shadow: var(--ibp-shadow);
  color: var(--ibp-text);
  transition: transform .2s, border-color .2s, box-shadow .2s;
  overflow: hidden;
}
.ib-level-card:hover {
  transform: translateY(-2px);
  border-color: var(--ibp-card-hover-border);
  box-shadow: var(--ibp-shadow-hover);
  color: var(--ibp-text);
}

.ib-level-card__rung {
  display: grid; place-items: center;
  background: var(--ibp-deep-bg);
  border-right: 1px solid var(--ibp-line);
  font-family: var(--ibp-font-display);
}
.ib-level-card__num {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--ibp-text);
}

[data-level="1"] .ib-level-card__rung { background: color-mix(in srgb, var(--ibp-accent) 6%, var(--ibp-deep-bg)); }
[data-level="2"] .ib-level-card__rung { background: color-mix(in srgb, var(--ibp-accent) 14%, var(--ibp-deep-bg)); }
[data-level="3"] .ib-level-card__rung { background: color-mix(in srgb, var(--ibp-accent) 24%, var(--ibp-deep-bg)); }
[data-level="4"] .ib-level-card__rung { background: color-mix(in srgb, var(--ibp-accent) 36%, var(--ibp-deep-bg)); }
[data-level="5"] .ib-level-card__rung {
  background: linear-gradient(160deg, var(--ibp-accent), var(--ibp-gold));
  color: #fff;
}
[data-level="5"] .ib-level-card__num { color: #fff; }

.ib-level-card__body { padding: 1.5rem; display: flex; flex-direction: column; gap: .75rem; }
.ib-level-card__head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.ib-level-card__head h3 { font-size: 1.2rem; }
.ib-level-card__tagline {
  font-family: var(--ibp-font-display);
  font-size: .85rem;
  letter-spacing: .04em;
  color: var(--ibp-accent);
  margin: 0;
}
.ib-level-card__desc { margin: 0; color: var(--ibp-text-muted); font-size: .95rem; }
.ib-level-card__skills {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-wrap: wrap; gap: .35rem;
}
.ib-level-card__skills li {
  font-size: .8rem;
  padding: .35rem .65rem;
  background: var(--ibp-deep-bg);
  color: var(--ibp-text-soft);
  border-radius: 999px;
  font-family: var(--ibp-font-display);
  letter-spacing: .02em;
}
.ib-level-card__meta {
  display: flex; flex-wrap: wrap; gap: 1rem;
  font-family: var(--ibp-font-display);
  font-size: .8rem; letter-spacing: .06em;
  color: var(--ibp-text-muted);
  text-transform: uppercase;
}
.ib-level-card__cta { align-self: flex-start; margin-top: .5rem; }

@media (max-width: 700px) {
  .ib-level-card { grid-template-columns: 1fr; }
  .ib-level-card__rung {
    border-right: none;
    border-bottom: 1px solid var(--ibp-line);
    padding: .8rem;
  }
}

/* ============================================================
   Practice page
   ============================================================ */
.ib-practice__header {
  display: flex; flex-wrap: wrap; gap: 1rem;
  justify-content: space-between; align-items: center;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
  background: var(--ibp-card-bg);
  border: 1px solid var(--ibp-card-border);
  border-radius: var(--ibp-radius);
}
.ib-practice__ident { display: flex; flex-wrap: wrap; gap: .5rem; }
.ib-practice__crumb {
  font-family: var(--ibp-font-display);
  font-size: .8rem; letter-spacing: .08em;
  padding: .35rem .7rem;
  background: var(--ibp-deep-bg);
  border-radius: 999px;
  color: var(--ibp-text-soft);
}
.ib-practice__crumb--level {
  background: var(--ibp-accent); color: #fff;
}
.ib-practice__progress { display: flex; align-items: center; gap: 1rem; }
.ib-practice__progress strong { display: block; }
.ib-practice__progress p { margin: 0; color: var(--ibp-text-muted); font-size: .82rem; }

.ib-practice__grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 1.5rem;
  align-items: start;
}
@media (max-width: 980px) {
  .ib-practice__grid { grid-template-columns: 1fr; }
}

.ib-practice__main { display: flex; flex-direction: column; gap: 1.25rem; }

.ib-practice__banner {
  display: flex; gap: .85rem;
  padding: 1rem 1.25rem;
  background: var(--ibp-accent-soft);
  border: 1px solid color-mix(in srgb, var(--ibp-accent) 40%, transparent);
  border-radius: var(--ibp-radius);
  color: var(--ibp-text);
}
.ib-practice__banner svg { color: var(--ibp-accent); flex: none; }
.ib-practice__banner strong { display: block; }
.ib-practice__banner p { margin: .2rem 0 0; color: var(--ibp-text-soft); font-size: .92rem; }

.ib-question {
  background: var(--ibp-card-bg);
  border: 1px solid var(--ibp-card-border);
  border-radius: var(--ibp-radius);
  padding: 2rem;
}
.ib-question__head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1rem;
}
.ib-question__count {
  font-family: var(--ibp-font-display);
  font-size: .8rem;
  letter-spacing: .12em;
  color: var(--ibp-text-muted);
  text-transform: uppercase;
}
.ib-question__prompt { font-size: 1.45rem; margin-bottom: .8rem; }
.ib-question__body { color: var(--ibp-text-soft); }

.ib-question__answer { margin-top: 1.5rem; }
.ib-question__label {
  display: block;
  font-family: var(--ibp-font-display);
  font-size: .8rem;
  letter-spacing: .08em;
  margin-bottom: .35rem;
  color: var(--ibp-text-soft);
}
.ib-input {
  width: 100%;
  padding: .9rem 1rem;
  background: var(--ibp-soft-bg);
  border: 1px solid var(--ibp-line);
  border-radius: var(--ibp-radius-sm);
  color: var(--ibp-text);
  font-family: var(--ibp-font-ui);
  font-size: 1rem;
}
.ib-input:focus { outline: 2px solid var(--ibp-accent); outline-offset: 1px; }
.ib-input:disabled { opacity: .65; cursor: not-allowed; }
.ib-question__actions {
  display: flex; flex-wrap: wrap; gap: .6rem;
  margin-top: 1rem;
}

.ib-panel {
  background: var(--ibp-card-bg);
  border: 1px solid var(--ibp-card-border);
  border-radius: var(--ibp-radius);
  padding: 1.5rem;
}
.ib-panel--ai {
  background: linear-gradient(180deg, var(--ibp-card-bg), var(--ibp-soft-bg));
  border-color: color-mix(in srgb, var(--ibp-accent) 25%, var(--ibp-card-border));
}
.ib-panel__head {
  display: flex; align-items: center; gap: .65rem;
  margin-bottom: .9rem;
}
.ib-panel__head svg {
  width: 18px; height: 18px;
  color: var(--ibp-accent);
}
.ib-panel__pill {
  margin-left: auto;
  font-family: var(--ibp-font-display);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: .3rem .55rem;
  border-radius: 999px;
  background: var(--ibp-deep-bg);
  color: var(--ibp-text-soft);
}
.ib-panel__list,
.ib-panel__body { margin: 0; color: var(--ibp-text-soft); }
.ib-panel__list { padding-left: 1.25rem; }
.ib-panel__list li { margin-bottom: .5rem; }
.ib-panel__actions { margin-top: 1rem; }

.ib-worked {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: .65rem;
}
.ib-worked li {
  padding: .8rem 1rem;
  border-left: 3px solid var(--ibp-accent);
  background: var(--ibp-deep-bg);
  border-radius: var(--ibp-radius-sm);
  color: var(--ibp-text-soft);
}

.ib-practice__side { display: flex; flex-direction: column; gap: 1.25rem; }
.ib-side-card {
  background: var(--ibp-card-bg);
  border: 1px solid var(--ibp-card-border);
  border-radius: var(--ibp-radius);
  padding: 1.5rem;
}
.ib-side-card .ib-eyebrow { margin-bottom: .5rem; }
.ib-side-card__stats {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: .5rem 1rem;
  margin: 1rem 0 0;
  font-family: var(--ibp-font-display);
  font-size: .85rem;
}
.ib-side-card__stats dt { color: var(--ibp-text-muted); }
.ib-side-card__stats dd { margin: 0; color: var(--ibp-text); text-align: right; }
.ib-side-card__list {
  list-style: disc; padding-left: 1.2rem;
  margin: .75rem 0 1rem;
  color: var(--ibp-text-soft);
  font-size: .9rem;
}
.ib-side-card__list li { margin-bottom: .25rem; }
.ib-side-card__note {
  margin: .85rem 0 0;
  font-size: .8rem;
  color: var(--ibp-text-muted);
}

.ib-achievements { list-style: none; padding: 0; margin: .5rem 0 0; display: flex; flex-direction: column; gap: .65rem; }
.ib-achievements__item {
  display: flex; gap: .75rem; align-items: flex-start;
  padding: .65rem .8rem;
  border: 1px dashed var(--ibp-line);
  border-radius: var(--ibp-radius-sm);
}
.ib-achievements__item.is-locked { opacity: .55; }
.ib-achievements__icon {
  width: 30px; height: 30px;
  display: inline-grid; place-items: center;
  background: var(--ibp-deep-bg);
  color: var(--ibp-accent);
  border-radius: 8px; flex: none;
}
.ib-achievements__icon svg { width: 16px; height: 16px; }
.ib-achievements__item strong { display: block; font-size: .9rem; }
.ib-achievements__item p { margin: 0; font-size: .8rem; color: var(--ibp-text-muted); }

/* ============================================================
   Footer
   ============================================================ */
.ib-portal-footer {
  margin-top: 4rem;
  background: var(--ibp-deep-bg);
  border-top: 1px solid var(--ibp-line);
  color: var(--ibp-text-soft);
}
.ib-portal-footer__inner {
  max-width: 1180px; margin-inline: auto;
  padding: 3rem 2rem 2rem;
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr;
  gap: 2rem;
}
@media (max-width: 720px) {
  .ib-portal-footer__inner { grid-template-columns: 1fr; }
}
.ib-portal-footer__col { display: flex; flex-direction: column; gap: .5rem; }
.ib-portal-footer__col strong { color: var(--ibp-text); font-family: var(--ibp-font-display); }
.ib-portal-footer__col p { margin: 0; font-size: .92rem; color: var(--ibp-text-muted); }
.ib-portal-footer__col a {
  color: var(--ibp-text-soft); font-size: .92rem;
}
.ib-portal-footer__col a:hover { color: var(--ibp-accent); }
.ib-portal-footer__heading {
  font-family: var(--ibp-font-display);
  font-size: .8rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--ibp-text-muted);
  margin-bottom: .25rem;
}
.ib-portal-footer__base {
  max-width: 1180px; margin: 0 auto;
  padding: 1rem 2rem 2rem;
  border-top: 1px solid var(--ibp-line);
  font-family: var(--ibp-font-display);
  font-size: .8rem; letter-spacing: .04em;
  color: var(--ibp-text-muted);
}

/* ============================================================
   Empty / 404
   ============================================================ */
.ib-empty { max-width: 560px; text-align: center; padding: 4rem 0; }
.ib-empty h1 { margin-bottom: 1rem; }
.ib-empty p { margin-bottom: 2rem; }

/* ============================================================
   Motion + accessibility
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* Cards remain anchor elements — strip default link underline */
.ib-card, .ib-level-card { text-decoration: none; }
.ib-card:hover, .ib-level-card:hover { text-decoration: none; }

/* Focus styles */
:focus-visible {
  outline: 2px solid var(--ibp-accent);
  outline-offset: 3px;
  border-radius: 4px;
}