/* ==========================================================================
   Neft Teacher — Projects PREMIUM design layer
   Loads AFTER each project page's inline <style> and projects-kit.css to
   elevate culminating projects to TPT-seller / publisher quality.

   Non-destructive: targets existing class vocabulary only (no markup or ID
   changes), so every calculator, save/resume hook, and EN/ES toggle keeps
   working. Version pages are scoped under `.pk` (the <body class="pk">), the
   unit project index/hub pages under `.pk-hub` — neither class exists on any
   other page in the site, so nothing here leaks.

   Vanilla CSS, zero dependencies, offline-safe (system fonts only).
   Reference as /shared/projects/projects-premium.css
   ========================================================================== */

/* --------------------------------------------------------------------------
   0. Shared premium tokens + motion
   -------------------------------------------------------------------------- */
.pk,
.pk-hub {
  --pp-ink: #0c1b2a;
  --pp-muted: #54677c;
  --pp-line: #e4ebf2;
  --pp-bg: #eef3f8;
  --pp-card: #ffffff;

  --pp-blue: #1763c7;
  --pp-blue-deep: #0c3f86;
  --pp-teal: #0e9a8c;
  --pp-violet: #6d4ad6;
  --pp-gold: #f4a924;
  --pp-coral: #ef6b52;
  --pp-green: #19a35a;

  --pp-shadow-sm: 0 2px 6px rgba(12, 27, 42, 0.06);
  --pp-shadow: 0 10px 30px rgba(12, 27, 42, 0.1);
  --pp-shadow-lg: 0 24px 60px rgba(12, 27, 42, 0.16);
  --pp-radius: 22px;
  --pp-radius-lg: 28px;
  --pp-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes pp-rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes pp-sheen {
  0% {
    transform: translateX(-120%) skewX(-18deg);
  }
  60%,
  100% {
    transform: translateX(260%) skewX(-18deg);
  }
}

.pk {
  background:
    radial-gradient(
      1200px 480px at 12% -8%,
      rgba(23, 99, 199, 0.08),
      transparent 60%
    ),
    radial-gradient(
      1000px 420px at 100% 0%,
      rgba(14, 154, 140, 0.07),
      transparent 55%
    ),
    var(--pp-bg);
}

/* Stagger the entrance of the major sections (skip tab chrome) */
.pk .wrap > section,
.pk .wrap > .intro-card,
.pk .wrap > .progress-wrap {
  animation: pp-rise 0.6s var(--pp-ease) both;
}
.pk .wrap > .pk-tabs-wrap,
.pk .wrap > .pk-tab-panels,
.pk .wrap > .pk-tabnav {
  animation: none;
}
.pk .wrap > *:nth-child(2) {
  animation-delay: 0.04s;
}
.pk .wrap > *:nth-child(3) {
  animation-delay: 0.08s;
}
.pk .wrap > *:nth-child(4) {
  animation-delay: 0.12s;
}
.pk .wrap > *:nth-child(5) {
  animation-delay: 0.16s;
}

@media (prefers-reduced-motion: reduce) {
  .pk .wrap > section,
  .pk .wrap > .intro-card,
  .pk .phero .deco {
    animation: none !important;
  }
}

/* --------------------------------------------------------------------------
   1. Hero — depth, pattern, polished pills
   -------------------------------------------------------------------------- */
.pk .phero {
  background:
    radial-gradient(
      900px 360px at 78% -30%,
      rgba(244, 169, 36, 0.35),
      transparent 55%
    ),
    radial-gradient(
      700px 300px at 8% 120%,
      rgba(14, 154, 140, 0.45),
      transparent 55%
    ),
    linear-gradient(135deg, #0b2c52 0%, #1763c7 55%, #1c84c6 100%);
  padding: 56px 24px 48px;
  border-radius: 0 0 var(--pp-radius-lg) var(--pp-radius-lg);
  box-shadow: var(--pp-shadow);
}
.pk .phero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    rgba(255, 255, 255, 0.16) 1.4px,
    transparent 1.6px
  );
  background-size: 22px 22px;
  opacity: 0.5;
  mask-image: linear-gradient(to bottom, #000 0%, transparent 78%);
  pointer-events: none;
}
.pk .phero > * {
  position: relative;
  z-index: 1;
}
.pk .phero .deco {
  font-size: 64px;
  filter: drop-shadow(0 8px 18px rgba(0, 0, 0, 0.3));
  animation: pp-rise 0.7s var(--pp-ease) both;
}
.pk .phero h1 {
  font-size: clamp(30px, 5.4vw, 46px);
  font-weight: 800;
  letter-spacing: -0.025em;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.22);
}
.pk .phero p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.92);
}
.pk .phero .tag {
  backdrop-filter: blur(6px);
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.34);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
  letter-spacing: 0.01em;
}
.pk .phero .tag.gold {
  background: linear-gradient(135deg, #ffce5c, var(--pp-gold));
  border-color: rgba(255, 255, 255, 0.5);
  color: #3a2600;
  box-shadow: 0 4px 12px rgba(244, 169, 36, 0.4);
}

/* Hero toolbar buttons → glassy chips */
.pk .toolbar button {
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 999px;
  padding: 9px 18px;
  backdrop-filter: blur(6px);
  transition:
    transform 0.18s var(--pp-ease),
    background 0.18s ease;
}
.pk .toolbar button:hover {
  background: rgba(255, 255, 255, 0.26);
  transform: translateY(-1px);
}

/* Progress bar — gradient + glow */
.pk .progress-track {
  border-radius: 999px;
  overflow: hidden;
  background: rgba(12, 27, 42, 0.1);
}
.pk .progress-fill {
  background: linear-gradient(90deg, var(--pp-teal), var(--pp-blue));
  box-shadow: 0 0 14px rgba(23, 99, 199, 0.45);
  transition: width 0.5s var(--pp-ease);
}

/* --------------------------------------------------------------------------
   2. Cards: intro + phases — elevation, accent rail, hover lift
   -------------------------------------------------------------------------- */
.pk .intro-card,
.pk .phase {
  background: var(--pp-card);
  border: 1px solid var(--pp-line);
  border-radius: var(--pp-radius);
  box-shadow: var(--pp-shadow);
  position: relative;
  overflow: hidden;
  transition:
    transform 0.25s var(--pp-ease),
    box-shadow 0.25s var(--pp-ease);
}
.pk .phase {
  padding-top: 26px;
}
.pk .intro-card:hover,
.pk .phase:hover {
  transform: translateY(-3px);
  box-shadow: var(--pp-shadow-lg);
}
.pk .phase::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 6px;
  background: linear-gradient(180deg, var(--pp-blue), var(--pp-teal));
}
.pk .intro-card {
  border-top: 6px solid transparent;
  border-image: linear-gradient(90deg, var(--pp-gold), var(--pp-coral)) 1;
  padding: 26px 28px;
}
.pk .intro-card h2 {
  font-size: 1.28rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--pp-ink);
}
.pk .intro-card p {
  font-size: 1.02rem;
  line-height: 1.65;
  color: var(--pp-muted);
}
.pk .intro-card p strong {
  color: var(--pp-ink);
}

/* Phase header — bold gradient number badge */
.pk .phase-head {
  align-items: center;
}
.pk .phase-num {
  background: linear-gradient(135deg, var(--pp-blue), var(--pp-blue-deep));
  color: #fff;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-size: 22px;
  font-weight: 800;
  box-shadow: 0 8px 18px rgba(12, 63, 134, 0.35);
  flex: 0 0 auto;
}
.pk .skill {
  font-weight: 800;
  color: var(--pp-ink);
  letter-spacing: -0.01em;
}

/* Self → Peer → World arc banners */
.pk .arc-banner {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, var(--pp-violet), var(--pp-blue));
  color: #fff;
  border-radius: 999px;
  padding: 4px 14px;
  font-weight: 800;
  font-size: 12.5px;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 12px rgba(109, 74, 214, 0.32);
}

/* --------------------------------------------------------------------------
   3. Tasks, inputs, fields — friendly, tactile
   -------------------------------------------------------------------------- */
.pk .task {
  background: linear-gradient(180deg, #fbfdff, #f3f8fd);
  border: 1px solid var(--pp-line);
  border-radius: 16px;
  box-shadow: inset 0 1px 0 #fff;
}
.pk .fld {
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 11.5px;
  font-weight: 800;
  color: var(--pp-muted);
}
.pk input[type="text"],
.pk input[type="number"],
.pk input:not([type]),
.pk select,
.pk textarea {
  border: 1.5px solid var(--pp-line);
  border-radius: 12px;
  background: #fff;
  transition:
    border-color 0.16s ease,
    box-shadow 0.16s ease,
    transform 0.16s ease;
}
.pk input[type="text"]:focus,
.pk input[type="number"]:focus,
.pk input:not([type]):focus,
.pk select:focus,
.pk textarea:focus {
  outline: none;
  border-color: var(--pp-blue);
  box-shadow: 0 0 0 4px rgba(23, 99, 199, 0.16);
}

/* --------------------------------------------------------------------------
   4. Buttons — gradient depth, hover lift, variants
   -------------------------------------------------------------------------- */
.pk .btn {
  background: linear-gradient(135deg, var(--pp-blue), var(--pp-blue-deep));
  color: #fff;
  border: 0;
  border-radius: 12px;
  font-weight: 800;
  letter-spacing: 0.01em;
  box-shadow: 0 8px 18px rgba(12, 63, 134, 0.26);
  transition:
    transform 0.16s var(--pp-ease),
    box-shadow 0.16s var(--pp-ease),
    filter 0.16s ease;
}
.pk .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 26px rgba(12, 63, 134, 0.32);
  filter: brightness(1.04);
}
.pk .btn:active {
  transform: translateY(0);
  box-shadow: 0 6px 12px rgba(12, 63, 134, 0.26);
}
.pk .btn.alt {
  background: linear-gradient(135deg, var(--pp-teal), #0c7d72);
  box-shadow: 0 8px 18px rgba(14, 154, 140, 0.28);
}
.pk .btn.ghost {
  background: #fff;
  color: var(--pp-blue-deep);
  border: 1.5px solid var(--pp-blue);
  box-shadow: var(--pp-shadow-sm);
}
.pk .btn.ghost:hover {
  background: #eef5ff;
}

/* --------------------------------------------------------------------------
   5. Readouts / feedback — celebratory result cards
   -------------------------------------------------------------------------- */
.pk .readout:not(:empty) {
  background: linear-gradient(135deg, #e8f8f0, #dcf3ff);
  border: 1.5px solid #bfe8d6;
  border-radius: 16px;
  box-shadow:
    inset 0 1px 0 #fff,
    var(--pp-shadow-sm);
  position: relative;
}
.pk .readout .big,
.pk .big {
  font-weight: 800;
  background: linear-gradient(135deg, var(--pp-blue), var(--pp-teal));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.pk .feedback {
  font-weight: 800;
}

/* Hint disclosure → pill summary */
.pk .hintbox {
  border: 1px dashed #c9d6e4;
  border-radius: 14px;
  background: #f9fcff;
}
.pk .hintbox > summary {
  cursor: pointer;
  font-weight: 800;
  color: var(--pp-blue-deep);
  list-style: none;
}
.pk .hintbox > summary::-webkit-details-marker {
  display: none;
}
.pk .hintbox > summary::before {
  content: "💡 ";
}

/* --------------------------------------------------------------------------
   6. Vocab cards + callouts (Formula Bank / Sentence Frames)
   -------------------------------------------------------------------------- */
.pk .pk-vocab .pk-term {
  border: 1.5px solid var(--pp-line);
  box-shadow: var(--pp-shadow-sm);
  transition:
    transform 0.2s var(--pp-ease),
    box-shadow 0.2s var(--pp-ease);
}
.pk .pk-vocab .pk-term:hover {
  transform: translateY(-4px);
  box-shadow: var(--pp-shadow);
}
.pk .pk-vocab .pk-term .pk-icon {
  display: inline-grid;
  place-items: center;
  width: 60px;
  height: 60px;
  margin: 0 auto 4px;
  border-radius: 50%;
  background: linear-gradient(135deg, #eaf3ff, #e2f6f1);
  box-shadow:
    inset 0 0 0 2px #fff,
    var(--pp-shadow-sm);
}
.pk .pk-callout {
  background: linear-gradient(135deg, #eef5ff, #e6f6f2);
  border: 1px solid #d6e6f4;
  box-shadow: var(--pp-shadow-sm);
}
.pk .pk-callout h3 {
  color: var(--pp-blue-deep);
}

/* What-If lab + stat cards */
.pk .pk-whatif {
  background: linear-gradient(135deg, #fff7e6, #fff1f0);
  border: 1px solid #ffe2bd;
}
.pk .pk-stat {
  box-shadow: var(--pp-shadow-sm);
  border-color: var(--pp-line);
}
.pk .pk-stat b {
  background: linear-gradient(135deg, var(--pp-blue), var(--pp-teal));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* --------------------------------------------------------------------------
   7. Rubric — colored header, zebra, rounded frame
   -------------------------------------------------------------------------- */
.pk .rubric {
  border-collapse: separate;
  border-spacing: 0;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--pp-shadow-sm);
  border: 1px solid var(--pp-line);
}
.pk .rubric thead th {
  background: linear-gradient(135deg, var(--pp-blue-deep), var(--pp-blue));
  color: #fff;
  letter-spacing: 0.02em;
}
.pk .rubric tbody tr:nth-child(even) {
  background: #f5f9fd;
}
.pk .rubric td,
.pk .rubric th {
  border-color: var(--pp-line) !important;
}

/* Checklist — tactile rows */
.pk .checklist label {
  border-radius: 12px;
  transition: background 0.15s ease;
}
.pk .checklist label:hover {
  background: #f1f7ff;
}
.pk .checklist input[type="checkbox"] {
  accent-color: var(--pp-green);
  width: 20px;
  height: 20px;
}

/* Report box — terminal window chrome */
.pk .pk-report {
  background: linear-gradient(180deg, #16233b, #0f172a);
  box-shadow: var(--pp-shadow);
  border: 1px solid #24344f;
  position: relative;
  padding-top: 40px;
}
.pk .pk-report::before {
  content: "";
  position: absolute;
  top: 14px;
  left: 18px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #ff5f57;
  box-shadow:
    20px 0 0 #febc2e,
    40px 0 0 #28c840;
}

/* --------------------------------------------------------------------------
   8. Footer
   -------------------------------------------------------------------------- */
.pk .footer {
  color: var(--pp-muted);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   9. Unit Project INDEX / hub pages (.pk-hub) — storefront polish
   -------------------------------------------------------------------------- */
.pk-hub {
  background:
    radial-gradient(
      1100px 460px at 10% -10%,
      rgba(23, 99, 199, 0.1),
      transparent 60%
    ),
    radial-gradient(
      900px 380px at 100% 0%,
      rgba(244, 169, 36, 0.12),
      transparent 55%
    ),
    #eef3f8;
}
.pk-hub .hero.compact-hero {
  background: linear-gradient(135deg, #0b2c52 0%, #1763c7 60%, #1c84c6 100%);
  color: #fff;
  border-radius: var(--pp-radius-lg);
  padding: 48px 36px;
  box-shadow: var(--pp-shadow);
  position: relative;
  overflow: hidden;
}
.pk-hub .hero.compact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    rgba(255, 255, 255, 0.15) 1.4px,
    transparent 1.6px
  );
  background-size: 22px 22px;
  opacity: 0.45;
  mask-image: linear-gradient(to bottom, #000, transparent 80%);
}
.pk-hub .hero.compact-hero > * {
  position: relative;
  z-index: 1;
}
.pk-hub .hero .eyebrow {
  color: #ffd874;
}
.pk-hub .hero h1 {
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 800;
  letter-spacing: -0.025em;
}
.pk-hub .hero .hero-copy {
  color: rgba(255, 255, 255, 0.92);
}

/* Version choice cards become bold product tiles */
.pk-hub .activity-grid {
  gap: 22px;
}
.pk-hub .activity-card {
  border: 1px solid var(--pp-line);
  border-radius: var(--pp-radius);
  background: var(--pp-card);
  box-shadow: var(--pp-shadow);
  padding: 26px;
  position: relative;
  overflow: hidden;
  transition:
    transform 0.25s var(--pp-ease),
    box-shadow 0.25s var(--pp-ease);
}
.pk-hub .activity-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background: linear-gradient(90deg, var(--pp-blue), var(--pp-teal));
}
.pk-hub .activity-card:nth-child(2)::before {
  background: linear-gradient(90deg, var(--pp-gold), var(--pp-coral));
}
.pk-hub .activity-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--pp-shadow-lg);
}
.pk-hub .activity-card .card-kicker {
  display: inline-block;
  background: #eef5ff;
  color: var(--pp-blue-deep);
  border-radius: 999px;
  padding: 4px 12px;
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.02em;
}
.pk-hub .activity-card:nth-child(2) .card-kicker {
  background: #fff3e0;
  color: #9a5b12;
}
.pk-hub .activity-card h3 {
  font-size: 22px;
  letter-spacing: -0.02em;
}
.pk-hub .activity-card .button-link {
  display: inline-block;
  margin-top: 8px;
  background: linear-gradient(135deg, var(--pp-blue), var(--pp-blue-deep));
  color: #fff;
  border-radius: 12px;
  padding: 11px 20px;
  font-weight: 800;
  box-shadow: 0 8px 18px rgba(12, 63, 134, 0.26);
  transition:
    transform 0.16s var(--pp-ease),
    box-shadow 0.16s var(--pp-ease);
}
.pk-hub .activity-card:hover .button-link {
  transform: translateY(-2px);
  box-shadow: 0 14px 26px rgba(12, 63, 134, 0.32);
}
.pk-hub .activity-card:nth-child(2) .button-link {
  background: linear-gradient(135deg, var(--pp-coral), #d6492f);
  box-shadow: 0 8px 18px rgba(239, 107, 82, 0.3);
}
.pk-hub .note-panel {
  border-radius: var(--pp-radius);
  border: 1px solid var(--pp-line);
  border-left: 6px solid var(--pp-teal);
  background: linear-gradient(135deg, #f4fbf9, #eef6ff);
  box-shadow: var(--pp-shadow-sm);
}

/* --------------------------------------------------------------------------
   9b. Level 0 (most-supported) tier + Read-Aloud control
   Level scheme is L0 < L1 < L2. .pk-lvl0 blocks mirror .pk-lvl1/.pk-lvl2
   (base visibility lives in projects-kit.css); these are premium polish.
   -------------------------------------------------------------------------- */
/* Level-0 support cards injected by tools/inject-projects-premium.mjs */
.pk .pk-lvl0.pk-l0-card {
  background: linear-gradient(135deg, #eef6ff, #f3fbff);
  border: 1.5px solid #cfe3f7;
  border-left: 6px solid var(--pp-blue);
  border-radius: 16px;
  box-shadow: var(--pp-shadow-sm);
  padding: 16px 18px;
  margin: 14px 0;
}
.pk .pk-l0-card .pk-l0-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, var(--pp-blue), var(--pp-blue-deep));
  color: #fff;
  border-radius: 999px;
  padding: 4px 12px;
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.02em;
}
.pk .pk-l0-card h4 {
  margin: 10px 0 6px;
  font-size: 1rem;
  color: var(--pp-ink);
}
.pk .pk-l0-card ul {
  margin: 0;
  padding-left: 18px;
}
.pk .pk-l0-card li {
  margin: 5px 0;
  line-height: 1.55;
  color: var(--pp-ink);
}
.pk .pk-l0-card .pk-l0-starter {
  background: #fff;
  border: 1px dashed #bcd4ee;
  border-radius: 10px;
  padding: 6px 10px;
  font-style: italic;
  color: var(--pp-muted);
}

/* Level toggle: give the Level-0 button its own (most-supported) accent */
.pk-level-toggle button[data-level-btn="level-0"] {
  border-color: rgba(255, 255, 255, 0.42);
}
.pk .pk-level-toggle button[data-level-btn="level-0"][aria-pressed="true"] {
  outline: 3px solid var(--pp-teal);
}

/* Read-Aloud toggle chip in the hero toolbar */
.pk .toolbar button[data-tts-toggle][aria-pressed="true"] {
  background: linear-gradient(135deg, #ffce5c, var(--pp-gold));
  color: #3a2600;
  border-color: rgba(255, 255, 255, 0.5);
}
.pk .toolbar button[data-tts-toggle][hidden] {
  display: none;
}
/* When read-aloud is on, hint that prompts are tappable */
.pk-tts-on .pk-mt-prompt,
.pk-tts-on .pk-step-title,
.pk-tts-on .arc-banner {
  cursor: pointer;
}
.pk-tts-on .pk-mt-prompt:hover,
.pk-tts-on .pk-step-title:hover {
  text-decoration: underline dotted;
  text-underline-offset: 3px;
}

@media print {
  .pk .pk-l0-card,
  .pk [data-tts-toggle] {
    display: none !important;
  }
}

/* --------------------------------------------------------------------------
   10. Print — flatten premium effects so worksheets stay clean
   -------------------------------------------------------------------------- */
@media print {
  .pk,
  .pk-hub {
    background: #fff !important;
  }
  .pk .phero,
  .pk-hub .hero.compact-hero {
    background: #0b2c52 !important;
    box-shadow: none !important;
  }
  .pk .intro-card,
  .pk .phase,
  .pk .btn,
  .pk-hub .activity-card {
    box-shadow: none !important;
    transform: none !important;
    animation: none !important;
  }
  .pk .pk-report::before,
  .pk .phero::before {
    display: none !important;
  }
}

/* ==========================================================================
   2. PREMIUM v2 — "TPT-seller" excitement layer (calm, gentle motion)
   Appended Jun 2026. Pure CSS, scoped under .pk / .pk-hub, additive only.
   Slow decorative motion (8–16s), fully disabled under reduced-motion + print.
   ========================================================================== */

@keyframes pp-aurora {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  50%  { transform: translate3d(2.5%, -2%, 0) scale(1.06); }
  100% { transform: translate3d(0, 0, 0) scale(1); }
}
@keyframes pp-float {
  0%, 100% { transform: translateY(0) rotate(-3deg); }
  50%      { transform: translateY(-10px) rotate(3deg); }
}
@keyframes pp-stripe { from { background-position: 0 0; } to { background-position: 40px 0; } }
@keyframes pp-pop {
  0%   { transform: scale(0.6); opacity: 0; }
  70%  { transform: scale(1.08); }
  100% { transform: scale(1); opacity: 1; }
}

/* Hero — drifting aurora + animated brand underline ------------------------ */
.pk .phero { overflow: hidden; }
.pk .phero::after {
  content: "";
  position: absolute;
  inset: -30%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(420px 220px at 20% 18%, rgba(244, 169, 36, 0.30), transparent 60%),
    radial-gradient(460px 240px at 84% 88%, rgba(14, 154, 140, 0.34), transparent 60%),
    radial-gradient(380px 200px at 60% 10%, rgba(109, 74, 214, 0.26), transparent 60%);
  animation: pp-aurora 16s ease-in-out infinite;
}
.pk .phero .deco {
  animation: pp-rise 0.7s var(--pp-ease) both, pp-float 7s ease-in-out 0.8s infinite;
}
.pk .phero h1 {
  display: inline-block;
  padding-bottom: 8px;
  background-image: linear-gradient(90deg, var(--pp-gold), #ffe39a, var(--pp-gold));
  background-size: 220% 3px;
  background-position: 0 100%;
  background-repeat: no-repeat;
}

/* Phase medallions — glossy gradient, pop-in, color cycles per phase ------- */
.pk .phase-num {
  background: linear-gradient(140deg, var(--pp-blue), var(--pp-blue-deep));
  color: #fff;
  box-shadow: 0 6px 16px rgba(12, 63, 134, 0.34), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  animation: pp-pop 0.5s var(--pp-ease) both;
}
.pk .phase:nth-of-type(4n + 1) .phase-num { background: linear-gradient(140deg, #1763c7, #0c3f86); }
.pk .phase:nth-of-type(4n + 2) .phase-num { background: linear-gradient(140deg, #0e9a8c, #0a6f64); }
.pk .phase:nth-of-type(4n + 3) .phase-num { background: linear-gradient(140deg, #6d4ad6, #4a2fa0); }
.pk .phase:nth-of-type(4n + 4) .phase-num { background: linear-gradient(140deg, #ef6b52, #c8462f); }

/* Phase cards — colored top accent + hover sheen sweep --------------------- */
.pk .phase { position: relative; overflow: hidden; }
.pk .phase::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--pp-blue), var(--pp-teal), var(--pp-violet), var(--pp-gold));
  background-size: 300% 100%;
  opacity: 0.9;
}
.pk .phase:nth-of-type(4n + 1)::after { background-position: 0% 0; }
.pk .phase:nth-of-type(4n + 2)::after { background-position: 40% 0; }
.pk .phase:nth-of-type(4n + 3)::after { background-position: 70% 0; }
.pk .phase:nth-of-type(4n + 4)::after { background-position: 100% 0; }
.pk .phase > .pp-sheen,
.pk .phase::before { will-change: transform; }

/* Arc banner ("Research Lab" featured callout) — make it a hero strip ------ */
.pk .arc-banner {
  background:
    radial-gradient(600px 200px at 100% 0%, rgba(255, 255, 255, 0.18), transparent 60%),
    linear-gradient(120deg, #15324f 0%, #1763c7 60%, #0e9a8c 120%);
  color: #fff;
  border: none;
  box-shadow: var(--pp-shadow);
  position: relative;
  overflow: hidden;
}
.pk .arc-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.14) 1.2px, transparent 1.4px);
  background-size: 18px 18px;
  opacity: 0.5;
  pointer-events: none;
}
.pk .arc-banner * { position: relative; z-index: 1; }

/* Skill + tag chips — gradient pills --------------------------------------- */
.pk .skill {
  background: linear-gradient(135deg, #eaf3fe, #d8ecff);
  border: 1px solid #bcd9f6;
  border-radius: 999px;
  font-weight: 700;
}
.pk .phero .tags .tag:not(.gold) { transition: transform 0.18s var(--pp-ease); }
.pk .phero .tags .tag:hover { transform: translateY(-1px); }

/* Buttons — glossier, springy ---------------------------------------------- */
.pk .btn {
  background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0));
  box-shadow: 0 6px 16px rgba(23, 99, 199, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}
.pk .btn:hover { transform: translateY(-2px); }

/* Progress — gentle candy shimmer + celebratory glow ----------------------- */
.pk .progress-fill {
  position: relative;
  background-image:
    linear-gradient(90deg, var(--pp-teal), var(--pp-blue)),
    repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.22) 0 10px, rgba(255, 255, 255, 0) 10px 20px);
  background-blend-mode: overlay;
  animation: pp-stripe 1.6s linear infinite;
}

/* Encouraging callout polish ----------------------------------------------- */
.pk .pk-callout {
  border-left: 5px solid var(--pp-gold);
  background: linear-gradient(135deg, #fff8e9, #fffdf6);
}

@media print {
  .pk .phero::after,
  .pk .phase::after,
  .pk .arc-banner::before { display: none !important; }
  .pk .progress-fill { animation: none !important; }
}
@media (prefers-reduced-motion: reduce) {
  .pk .phero::after,
  .pk .phero .deco,
  .pk .phase-num,
  .pk .progress-fill { animation: none !important; }
}
