.ai-package-library {
  align-content: start;
  width: min(1180px, calc(100% - 32px));
  gap: 24px;
  padding-block: clamp(36px, 7vw, 76px);
}

.ai-package-library h1 {
  max-width: 900px;
  font-size: clamp(2.8rem, 8vw, 6.2rem);
}

.ai-learning-hero {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--surface) 88%, #9df3d0), var(--surface) 58%),
    var(--surface);
  padding: clamp(28px, 6vw, 68px);
}

.ai-learning-hero::after {
  position: absolute;
  top: -90px;
  right: -70px;
  width: 270px;
  height: 270px;
  border: 1px solid color-mix(in srgb, var(--ink) 16%, transparent);
  border-radius: 50%;
  box-shadow: 0 0 0 34px color-mix(in srgb, #6ce8ba 10%, transparent), 0 0 0 72px color-mix(in srgb, #7da6ff 8%, transparent);
  content: "";
  pointer-events: none;
}

.ai-learning-hero h1 { position: relative; z-index: 1; }
.ai-learning-hero p { position: relative; z-index: 1; max-width: 670px; margin: 0; color: var(--muted); font-size: clamp(1rem, 2vw, 1.28rem); font-weight: 650; line-height: 1.5; }
.ai-kicker { color: #2c7057; font-size: .72rem; font-weight: 900; letter-spacing: .13em; text-transform: uppercase; }
:root[data-theme="dark"] .ai-kicker { color: #80e8bf; }

.ai-view-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  padding: 7px;
}

.ai-view-tabs button {
  min-height: 52px;
  border: 1px solid transparent;
  border-radius: 11px;
  background: transparent;
  color: var(--muted);
  padding: 0 18px;
  font: inherit;
  font-weight: 850;
  cursor: pointer;
}

.ai-view-tabs button:hover,
.ai-view-tabs button:focus-visible { border-color: var(--line); color: var(--ink); }
.ai-view-tabs button[aria-pressed="true"] { border-color: var(--ink); background: var(--ink); color: var(--bg); }

.ai-view { display: grid; gap: 28px; }
.ai-view[hidden],
.ai-module-panel[hidden] { display: none !important; }

.ai-progress-console {
  display: grid;
  grid-template-columns: minmax(180px, auto) minmax(180px, 1fr) auto auto;
  align-items: center;
  gap: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  padding: 18px 20px;
}

.ai-progress-console > div:first-child { display: grid; gap: 3px; }
.ai-progress-console > div:first-child span { color: var(--muted); font-size: .68rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.ai-progress-console > div:first-child strong { font-size: .94rem; }
.ai-progress-track { overflow: hidden; height: 10px; border-radius: 999px; background: color-mix(in srgb, var(--ink) 10%, transparent); }
.ai-progress-track span { display: block; width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, #7565ec, #45dba0); transition: width .28s ease; }
#ai-progress-percent { min-width: 48px; color: #2c7057; font-size: 1.2rem; font-variant-numeric: tabular-nums; text-align: right; }
:root[data-theme="dark"] #ai-progress-percent { color: #80e8bf; }
#ai-continue { min-height: 44px; border: 1px solid #2c7057; border-radius: 999px; background: #d8f6e9; color: #153c2d; padding: 0 18px; font: inherit; font-size: .78rem; font-weight: 900; cursor: pointer; }
#ai-continue:hover,
#ai-continue:focus-visible { background: #bdebd8; outline: 3px solid color-mix(in srgb, #45dba0 34%, transparent); outline-offset: 2px; }
:root[data-theme="dark"] #ai-continue { border-color: #80e8bf; background: #1f513f; color: #e8fff6; }

.ai-learning-heading { display: flex; align-items: end; justify-content: space-between; gap: 28px; padding-top: 18px; }
.ai-learning-heading > div { display: grid; gap: 7px; }
.ai-learning-heading h2 { margin: 0; font-size: clamp(2rem, 5vw, 4rem); letter-spacing: -.055em; }
.ai-learning-heading > p { max-width: 470px; margin: 0; color: var(--muted); font-size: .92rem; font-weight: 650; line-height: 1.55; }

.ai-module-grid { display: grid; gap: 12px; }
.ai-module { overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.ai-module.is-open { border-color: color-mix(in srgb, #45dba0 54%, var(--line)); box-shadow: 0 18px 50px rgba(22, 45, 35, .08); }
.ai-module-toggle {
  display: grid;
  width: 100%;
  min-height: 98px;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 18px;
  border: 0;
  background: transparent;
  color: var(--ink);
  padding: 18px 22px;
  text-align: left;
  font: inherit;
  cursor: pointer;
}
.ai-module-toggle:hover,
.ai-module-toggle:focus-visible { background: color-mix(in srgb, var(--surface) 88%, #bdebd8); outline: 0; }
.ai-module-number { display: grid; width: 48px; height: 48px; place-items: center; border-radius: 13px; background: color-mix(in srgb, #7565ec 13%, var(--surface)); color: #5747c8; font-size: .75rem; font-weight: 900; font-variant-numeric: tabular-nums; }
:root[data-theme="dark"] .ai-module-number { color: #b9b0ff; }
.ai-module-title { display: grid; gap: 4px; }
.ai-module-title strong { font-size: clamp(1.05rem, 2.2vw, 1.36rem); }
.ai-module-title small { overflow: hidden; color: var(--muted); font-size: .78rem; font-weight: 650; line-height: 1.4; text-overflow: ellipsis; }
.ai-module-score { border-radius: 999px; background: color-mix(in srgb, var(--ink) 7%, transparent); padding: 7px 10px; color: var(--muted); font-size: .72rem; font-weight: 900; font-variant-numeric: tabular-nums; }
.ai-module-arrow { font-size: 1.05rem; transition: transform .2s ease; }
.ai-module.is-open .ai-module-arrow { transform: rotate(180deg); }

.ai-module-panel { display: grid; gap: 16px; border-top: 1px solid var(--line); padding: 18px 22px 24px; }
.ai-module-resource { display: flex; align-items: center; justify-content: space-between; gap: 16px; border-radius: 12px; background: color-mix(in srgb, var(--surface) 82%, #d8f6e9); padding: 12px 14px; }
.ai-module-resource span { color: var(--muted); font-size: .68rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.ai-module-resource a { color: var(--ink); font-size: .78rem; font-weight: 850; text-align: right; }
.ai-lesson-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.ai-lesson { display: grid; align-content: start; gap: 10px; border: 1px solid var(--line); border-radius: 14px; background: var(--bg); padding: 18px; transition: border-color .2s ease, background .2s ease; }
.ai-lesson.is-complete { border-color: #56a986; background: color-mix(in srgb, var(--bg) 78%, #c9f4df); }
:root[data-theme="dark"] .ai-lesson.is-complete { background: #193c30; }
.ai-lesson-topline { display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--muted); font-size: .67rem; font-weight: 850; letter-spacing: .05em; text-transform: uppercase; }
.ai-lesson-topline label { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; }
.ai-lesson-topline input { width: 18px; height: 18px; margin: 0; accent-color: #2c7057; }
.ai-lesson h3 { margin: 0; font-size: 1.08rem; letter-spacing: -.025em; }
.ai-lesson > p { margin: 0; color: var(--muted); font-size: .82rem; font-weight: 580; line-height: 1.58; }
.ai-practice { display: grid; gap: 4px; margin-top: 4px; border-left: 3px solid #7565ec; padding-left: 11px; }
.ai-practice strong { color: #5747c8; font-size: .66rem; letter-spacing: .08em; text-transform: uppercase; }
:root[data-theme="dark"] .ai-practice strong { color: #b9b0ff; }
.ai-practice span { font-size: .77rem; font-weight: 700; line-height: 1.45; }
}

.ai-package-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.ai-package-card {
  display: grid;
  min-height: 270px;
  align-content: start;
  gap: 24px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
  padding: clamp(24px, 4vw, 38px);
}

.ai-package-icon {
  display: grid;
  width: 64px;
  height: 64px;
  place-items: center;
  border-radius: 15px;
  background: #f5df7d;
  color: #2d2b20;
  font-size: .9rem;
  font-weight: 900;
  letter-spacing: .06em;
}

.ai-package-card h2 {
  margin: 0;
  font-size: clamp(1.35rem, 3vw, 2rem);
  letter-spacing: -.035em;
}

.ai-package-card p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: .82rem;
  font-weight: 700;
}

.ai-package-download {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  align-self: end;
  justify-self: start;
  margin-top: auto;
  border-radius: 999px;
  background: var(--ink);
  color: var(--surface);
  padding: 0 20px;
  font-size: .8rem;
  font-weight: 850;
  text-decoration: none;
}

.ai-package-download:hover,
.ai-package-download:focus-visible {
  outline: 3px solid rgba(201, 170, 61, .38);
  outline-offset: 3px;
}

:root[data-theme="dark"] .ai-package-icon {
  background: #645b32;
  color: #f6f3e7;
}

@media (max-width: 700px) {
  .ai-learning-hero { border-radius: 18px; }
  .ai-learning-hero::after { right: -170px; }
  .ai-progress-console { grid-template-columns: 1fr auto; }
  .ai-progress-track { grid-column: 1 / -1; grid-row: 2; }
  #ai-continue { grid-column: 1 / -1; }
  .ai-learning-heading { align-items: flex-start; flex-direction: column; gap: 10px; }
  .ai-module-toggle { grid-template-columns: auto minmax(0, 1fr) auto; gap: 12px; padding: 16px; }
  .ai-module-score { grid-column: 2; justify-self: start; }
  .ai-module-arrow { grid-column: 3; grid-row: 1 / span 2; }
  .ai-module-title small { display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
  .ai-module-panel { padding: 16px; }
  .ai-lesson-list { grid-template-columns: 1fr; }
  .ai-package-grid { grid-template-columns: 1fr; }
  .ai-package-card { min-height: 235px; }
}

@media (max-width: 440px) {
  .ai-package-library { width: min(100% - 22px, 1180px); }
  .ai-view-tabs { grid-template-columns: 1fr; }
  .ai-module-number { width: 42px; height: 42px; }
  .ai-module-resource { align-items: flex-start; flex-direction: column; }
  .ai-module-resource a { text-align: left; }
  .ai-lesson-topline { align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  .ai-progress-track span,
  .ai-module-arrow,
  .ai-lesson { transition: none; }
}

/* Universal button-border contract: every enabled button renders a visible 1px border. */
button:not(:disabled) {
  border-style: solid !important;
  border-width: 1px !important;
}