/* ────────────────────────────────────────────────────────────
 * Design Hub — main stylesheet
 * Layered on top of theme.json's CSS custom properties so block
 * markup gets the engineering-blueprint look without per-block CSS.
 * ──────────────────────────────────────────────────────────── */

/* base reset */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'cv02','cv03','cv04','cv11','ss01';
  background: var(--wp--preset--color--navy);
  color: var(--wp--preset--color--ink);
}
img { max-width: 100%; height: auto; display: block; }
::selection { background: var(--wp--preset--color--cyan); color: var(--wp--preset--color--navy); }
:focus-visible { outline: 1px solid var(--wp--preset--color--cyan); outline-offset: 2px; }

/* helpers */
.dh-mono   { font-family: var(--wp--preset--font-family--mono); letter-spacing: .05em; }
.dh-serif  { font-family: var(--wp--preset--font-family--fraunces); font-weight: 300; }
.dh-eyebrow { font-family: var(--wp--preset--font-family--mono); font-size: 11px; letter-spacing: .28em; color: var(--wp--preset--color--cyan); text-transform: uppercase; }
.dh-label  { font-family: var(--wp--preset--font-family--mono); font-size: 10px; letter-spacing: .2em; color: var(--wp--preset--color--ink-mute); text-transform: uppercase; }

/* schematic grid background */
.dh-grid-bg {
  background-image:
    linear-gradient(rgba(79,209,229,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,209,229,.04) 1px, transparent 1px),
    linear-gradient(rgba(79,209,229,.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,209,229,.10) 1px, transparent 1px);
  background-size: 16px 16px, 16px 16px, 96px 96px, 96px 96px;
}

/* tick corners (drafting registration marks) */
.dh-tick { position: relative; }
.dh-tick::before, .dh-tick::after {
  content: ''; position: absolute; width: 8px; height: 8px;
  border: 1px solid var(--wp--preset--color--cyan);
}
.dh-tick::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.dh-tick::after  { bottom: -1px; right: -1px; border-left: none; border-top: none; }

/* container */
.dh-container { max-width: 1400px; margin: 0 auto; padding: 0 40px; }

/* ─── HEADER ─── */
.dh-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10,22,40,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(79,209,229,.35);
}
.dh-header-inner {
  max-width: 1400px; margin: 0 auto; padding: 0 24px;
  min-height: 64px; display: flex; align-items: center; gap: 20px;
  flex-wrap: nowrap;
}
@media (min-width: 721px) { .dh-header-inner { padding: 0 40px; } }

.dh-site-title {
  display: flex; align-items: center; gap: 14px;
  text-decoration: none; color: inherit; flex-shrink: 0; min-width: 0;
}
.dh-logo-mark {
  width: 38px; height: 38px;
  border: 1.5px solid var(--wp--preset--color--cyan);
  color: var(--wp--preset--color--cyan);
  display: grid; place-items: center;
  font-family: var(--wp--preset--font-family--mono);
  font-weight: 800; font-size: 14px; letter-spacing: .04em;
  flex-shrink: 0;
}
.dh-site-meta { display: flex; flex-direction: column; line-height: 1.1; min-width: 0; }
.dh-site-overline {
  font-family: var(--wp--preset--font-family--mono);
  font-size: 9px; color: var(--wp--preset--color--ink-mute);
  letter-spacing: .22em;
}
.dh-site-name {
  font-family: var(--wp--preset--font-family--mono);
  font-size: 12px; color: var(--wp--preset--color--ink);
  font-weight: 700; letter-spacing: .14em; margin-top: 4px;
  white-space: nowrap;
}

.dh-nav { display: flex; gap: 4px; margin-left: auto; align-items: center; }
.dh-nav a {
  display: inline-flex; align-items: baseline; gap: 6px;
  padding: 8px 12px; text-decoration: none;
  font-family: var(--wp--preset--font-family--mono);
  font-size: 11px; letter-spacing: .14em;
  color: var(--wp--preset--color--ink-dim);
  text-transform: uppercase;
  white-space: nowrap;
}
.dh-nav a:hover { color: var(--wp--preset--color--cyan); }
.dh-nav a.current-menu-item,
.dh-nav a[aria-current="page"] {
  color: var(--wp--preset--color--cyan);
  border-bottom: 1px solid var(--wp--preset--color--cyan);
}
.dh-nav-actions { display: none; }

.dh-header-actions {
  display: flex; align-items: center; gap: 14px; flex-shrink: 0;
}
.dh-sign-in {
  font-family: var(--wp--preset--font-family--mono);
  font-size: 11px; letter-spacing: .14em;
  color: var(--wp--preset--color--ink-dim); text-decoration: none;
  white-space: nowrap;
}
.dh-enroll-btn { padding: 10px 18px; font-size: 11px; }

.dh-burger {
  display: none;
  width: 40px; height: 40px;
  background: transparent; border: 1px solid rgba(79,209,229,.35);
  cursor: pointer; padding: 0;
  margin-left: auto; flex-shrink: 0;
  flex-direction: column; justify-content: center; align-items: center; gap: 5px;
}
.dh-burger span {
  display: block; width: 18px; height: 1.5px;
  background: var(--wp--preset--color--ink);
  transition: transform .2s, opacity .2s;
}
.dh-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.dh-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.dh-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ─── LIVE BAR ─── */
.dh-live-bar {
  background: rgba(233,69,96,.08);
  border-bottom: 1px solid rgba(233,69,96,.3);
}
.dh-live-bar .inner {
  max-width: 1400px; margin: 0 auto; padding: 8px 24px;
  display: flex; align-items: center; gap: 12px;
  font-family: var(--wp--preset--font-family--mono);
  font-size: 11px; letter-spacing: .1em; color: #FFD0D8;
  flex-wrap: wrap;
}
@media (min-width: 721px) { .dh-live-bar .inner { padding: 0 40px; min-height: 36px; } }
.dh-live-bar .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--wp--preset--color--red);
  animation: dhPulse 2.2s ease-in-out infinite;
  flex-shrink: 0;
}
.dh-live-bar strong { color: var(--wp--preset--color--red); font-weight: 800; white-space: nowrap; }
.dh-live-bar .spacer { flex: 1; height: 1px; background: rgba(233,69,96,.2); min-width: 20px; }
.dh-live-bar a { color: var(--wp--preset--color--cyan); font-weight: 700; text-decoration: none; white-space: nowrap; margin-left: auto; }

@keyframes dhPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(233,69,96,.4); }
  50%      { box-shadow: 0 0 0 8px rgba(233,69,96,0); }
}

/* ─── HERO ─── */
.dh-hero {
  position: relative; overflow: hidden;
  border-bottom: 1px solid rgba(79,209,229,.35);
  background-image: radial-gradient(ellipse at 50% 60%, rgba(79,209,229,.12), transparent 55%);
}
.dh-hero-inner { max-width: 1400px; margin: 0 auto; padding: 100px 40px 80px; position: relative; z-index: 1; }
.dh-hero h1 {
  text-align: center; margin: 0;
  font-family: var(--wp--preset--font-family--fraunces);
  font-weight: 300; font-size: clamp(72px, 9vw, 132px);
  line-height: .94; letter-spacing: -.03em; text-wrap: balance;
}
.dh-hero h1 em {
  color: var(--wp--preset--color--cyan); font-style: italic;
  border-bottom: 4px solid var(--wp--preset--color--red); padding-bottom: 4px;
  font-weight: 400;
}
.dh-hero .lede { margin: 36px auto 0; max-width: 680px; text-align: center; color: var(--wp--preset--color--ink-dim); font-size: 18px; line-height: 1.55; text-wrap: balance; }
.dh-hero .ctas { display: flex; justify-content: center; gap: 14px; margin-top: 40px; }

/* ─── BUTTONS ─── */
.dh-btn, .wp-element-button, .wp-block-button__link {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 24px;
  background: var(--wp--preset--color--cyan); color: var(--wp--preset--color--navy);
  font-family: var(--wp--preset--font-family--mono);
  font-weight: 800; font-size: 12px; letter-spacing: .18em;
  text-decoration: none; cursor: pointer; border: none; border-radius: 0;
  transition: transform .15s, box-shadow .15s;
}
.dh-btn:hover, .wp-element-button:hover, .wp-block-button__link:hover {
  transform: translateY(-1px); box-shadow: 0 8px 24px rgba(79,209,229,.3);
}
.dh-btn--ghost, .is-style-outline .wp-block-button__link {
  background: transparent !important; color: var(--wp--preset--color--ink) !important;
  border: 1px solid rgba(79,209,229,.35) !important;
}
.dh-btn--ghost:hover { background: rgba(79,209,229,.12) !important; border-color: var(--wp--preset--color--cyan) !important; }

/* ─── CARDS / PANELS ─── */
.dh-panel {
  border: 1px solid rgba(79,209,229,.35);
  background: var(--wp--preset--color--navy-2);
  padding: 24px;
}
.dh-panel-title {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px; border-bottom: 1px solid rgba(79,209,229,.35);
  background: rgba(79,209,229,.04);
  font-family: var(--wp--preset--font-family--mono);
  font-size: 11px; letter-spacing: .22em; text-transform: uppercase;
  color: var(--wp--preset--color--cyan);
}

/* tag pill */
.dh-tag {
  display: inline-flex; align-items: center;
  padding: 3px 8px; border: 1px solid var(--wp--preset--color--cyan);
  color: var(--wp--preset--color--cyan);
  font-family: var(--wp--preset--font-family--mono);
  font-size: 10px; letter-spacing: .16em; text-transform: uppercase;
}
.dh-tag.is-amber { border-color: var(--wp--preset--color--amber); color: var(--wp--preset--color--amber); }
.dh-tag.is-mute  { border-color: rgba(79,209,229,.35); color: var(--wp--preset--color--ink-dim); }

/* ─── STATS STRIP ─── */
.dh-stats {
  display: grid; grid-template-columns: repeat(6, 1fr);
  border-top: 1px solid rgba(79,209,229,.35);
  border-bottom: 1px solid rgba(79,209,229,.35);
}
.dh-stats > div { padding: 22px 20px; border-left: 1px solid rgba(79,209,229,.35); }
.dh-stats > div:first-child { border-left: none; }
.dh-stats .num {
  font-family: var(--wp--preset--font-family--inter);
  font-size: 28px; font-weight: 800; letter-spacing: -.02em; line-height: 1.15;
  color: var(--wp--preset--color--cyan); margin-top: 4px;
}

/* ─── COURSE CARDS ─── */
.dh-course-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.dh-course-card {
  border: 1px solid rgba(79,209,229,.35);
  background: var(--wp--preset--color--navy-2);
  padding: 24px; min-height: 340px;
  display: flex; flex-direction: column; gap: 16px;
  transition: border-color .15s, transform .15s;
  text-decoration: none; color: inherit;
}
.dh-course-card:hover { border-color: var(--wp--preset--color--cyan); transform: translateY(-2px); }
.dh-course-card .meta { display: flex; justify-content: space-between; align-items: flex-start; }
.dh-course-card h3 { margin: 0; font-family: var(--wp--preset--font-family--inter); font-size: 20px; line-height: 1.2; letter-spacing: -.01em; color: var(--wp--preset--color--ink); font-weight: 600; }
.dh-course-card p  { margin: 0; font-size: 13px; color: var(--wp--preset--color--ink-dim); line-height: 1.5; flex: 1; }
.dh-course-card .price-row {
  display: flex; align-items: baseline; gap: 10px;
  padding-top: 14px; border-top: 1px solid rgba(79,209,229,.35);
  font-family: var(--wp--preset--font-family--mono);
}
.dh-course-card .price { font-family: var(--wp--preset--font-family--inter); font-size: 22px; font-weight: 800; color: var(--wp--preset--color--cyan); letter-spacing: -.01em; }
.dh-course-card .mrp   { font-size: 12px; color: var(--wp--preset--color--ink-mute); text-decoration: line-through; }
.dh-course-card .arrow { margin-left: auto; color: var(--wp--preset--color--cyan); }

/* ─── BUNDLES ─── */
.dh-bundle-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.dh-bundle {
  border: 1px solid rgba(79,209,229,.35);
  background: var(--wp--preset--color--navy-2);
  padding: 28px; min-height: 480px; position: relative;
  display: flex; flex-direction: column;
}
.dh-bundle.is-featured { border-color: var(--wp--preset--color--cyan); box-shadow: 0 0 0 1px var(--wp--preset--color--cyan); }
.dh-bundle .badge {
  position: absolute; top: -1px; right: -1px;
  background: var(--wp--preset--color--cyan); color: var(--wp--preset--color--navy);
  padding: 6px 10px; font-family: var(--wp--preset--font-family--mono);
  font-size: 10px; font-weight: 800; letter-spacing: .18em;
}
.dh-bundle h3 { margin: 18px 0 6px; font-family: var(--wp--preset--font-family--fraunces); font-weight: 400; font-size: 32px; letter-spacing: -.01em; }
.dh-bundle ul { list-style: none; padding: 0; margin: 22px 0; display: grid; gap: 10px; flex: 1; }
.dh-bundle li { display: flex; gap: 12px; font-size: 13px; color: var(--wp--preset--color--ink-dim); }
.dh-bundle li::before { content: "▣"; color: var(--wp--preset--color--cyan); font-family: var(--wp--preset--font-family--mono); }

/* ─── INSTRUCTOR ─── */
.dh-instructor-avatar {
  width: 160px; height: 160px;
  background: linear-gradient(135deg, var(--wp--preset--color--cyan), var(--wp--preset--color--amber));
  color: var(--wp--preset--color--navy);
  display: grid; place-items: center;
  font-family: var(--wp--preset--font-family--mono);
  font-weight: 800; font-size: 56px; letter-spacing: -.02em;
}

/* ─── FOOTER ─── */
.dh-footer {
  border-top: 1px solid rgba(79,209,229,.35);
  margin-top: 80px; padding: 40px 0 24px;
}
.dh-footer-inner {
  max-width: 1400px; margin: 0 auto; padding: 0 40px;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 32px;
}
.dh-footer h4 { font-family: var(--wp--preset--font-family--mono); font-size: 10px; letter-spacing: .2em; color: var(--wp--preset--color--ink-mute); text-transform: uppercase; margin: 0 0 14px; }
.dh-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.dh-footer a  { color: var(--wp--preset--color--ink-dim); font-size: 13px; text-decoration: none; }
.dh-footer-bottom {
  max-width: 1400px; margin: 0 auto; padding: 18px 40px 0;
  display: grid; grid-template-columns: repeat(6, 1fr);
  border-top: 1px solid rgba(79,209,229,.35);
  font-family: var(--wp--preset--font-family--mono);
  font-size: 10px; letter-spacing: .14em; color: var(--wp--preset--color--ink-mute);
  text-transform: uppercase;
}

/* ─── CALCULATOR ─── */
.dh-calc { background: var(--wp--preset--color--navy-2); border: 1px solid rgba(79,209,229,.35); padding: 32px; }
.dh-calc-tabs { display: flex; gap: 0; }
.dh-calc-tab {
  flex: 1; padding: 20px 24px; text-align: left; cursor: pointer; background: transparent;
  border: 1px solid rgba(79,209,229,.35); border-left: none; position: relative;
  color: var(--wp--preset--color--ink-dim);
}
.dh-calc-tab:first-child { border-left: 1px solid rgba(79,209,229,.35); }
.dh-calc-tab.is-active { background: var(--wp--preset--color--navy-2); color: var(--wp--preset--color--ink); }
.dh-calc-tab.is-active::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--wp--preset--color--cyan); }
.dh-calc-tab small { font-family: var(--wp--preset--font-family--mono); font-size: 10px; letter-spacing: .22em; color: var(--wp--preset--color--ink-mute); }
.dh-calc-tab.is-active small { color: var(--wp--preset--color--cyan); }
.dh-calc-body { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; padding: 32px 0 0; }
.dh-calc input[type="range"] { width: 100%; accent-color: var(--wp--preset--color--cyan); }
.dh-calc input[type="number"] {
  width: 90px; padding: 6px 8px;
  background: var(--wp--preset--color--navy);
  color: var(--wp--preset--color--cyan);
  border: 1px solid rgba(79,209,229,.35);
  font-family: var(--wp--preset--font-family--mono);
  font-size: 13px; font-weight: 700; text-align: right;
}
.dh-calc .field { display: grid; gap: 8px; margin-bottom: 14px; }
.dh-calc .field-top { display: flex; justify-content: space-between; align-items: baseline; }
.dh-calc .field-row { display: flex; align-items: center; gap: 14px; }
.dh-calc .results { background: var(--wp--preset--color--navy); border: 1px solid var(--wp--preset--color--cyan); padding: 20px; }
.dh-calc .big-result {
  margin-top: 14px; padding: 18px;
  background: var(--wp--preset--color--navy-2);
  border: 1px solid var(--wp--preset--color--cyan);
}
.dh-calc .big-result .v {
  font-family: var(--wp--preset--font-family--inter);
  font-size: 64px; font-weight: 800; color: var(--wp--preset--color--cyan);
  letter-spacing: -.03em; line-height: 1.05; margin-top: 4px;
}
.dh-calc .result-row {
  display: flex; justify-content: space-between; padding: 8px 0;
  border-bottom: 1px dashed rgba(79,209,229,.15);
}
.dh-calc .schematic { border: 1px solid rgba(79,209,229,.35); padding: 20px; background: var(--wp--preset--color--navy); }

/* ─── FAQ ─── */
.dh-faq { border-top: 1px solid rgba(79,209,229,.35); }
.dh-faq summary {
  list-style: none; display: flex; justify-content: space-between; align-items: center;
  padding: 22px 0; cursor: pointer; font-size: 18px; color: var(--wp--preset--color--ink); font-weight: 500;
}
.dh-faq summary::-webkit-details-marker { display: none; }
.dh-faq summary::after {
  content: '+'; width: 28px; height: 28px;
  border: 1px solid var(--wp--preset--color--cyan); color: var(--wp--preset--color--cyan);
  display: grid; place-items: center; font-family: var(--wp--preset--font-family--mono);
  transition: transform .2s;
}
.dh-faq[open] summary::after { transform: rotate(45deg); }
.dh-faq p { padding: 0 0 22px; font-size: 15px; color: var(--wp--preset--color--ink-dim); line-height: 1.65; max-width: 720px; }

/* ─── COMPANIES STRIP ─── */
.dh-companies {
  display: grid; grid-template-columns: repeat(8, 1fr);
  border-top: 1px solid rgba(79,209,229,.35);
  border-bottom: 1px solid rgba(79,209,229,.35);
  background: var(--wp--preset--color--navy-2);
}
.dh-companies > div { padding: 18px 0; text-align: center; font-weight: 800; letter-spacing: -.01em; font-size: 15px; border-left: 1px solid rgba(79,209,229,.35); }
.dh-companies > div:first-child { border-left: none; }

/* ─── RESPONSIVE ─── */
@media (max-width: 1100px) {
  .dh-course-grid { grid-template-columns: repeat(2, 1fr); }
  .dh-bundle-grid { grid-template-columns: 1fr; }
  .dh-stats       { grid-template-columns: repeat(3, 1fr); }
  .dh-companies   { grid-template-columns: repeat(4, 1fr); }
  .dh-footer-inner { grid-template-columns: 1fr 1fr; }
  .dh-calc-body   { grid-template-columns: 1fr; }
}

/* ─── MOBILE — collapse header into burger menu ─── */
@media (max-width: 860px) {
  .dh-header-actions { display: none; }
  .dh-burger { display: inline-flex; }

  /* Drawer nav — overlays from top */
  .dh-nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: rgba(10,22,40,.98);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(79,209,229,.35);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 12px 24px 20px;
    display: none;
  }
  .dh-burger[aria-expanded="true"] + .dh-nav,
  .dh-nav.is-open { display: flex; }
  .dh-nav a {
    padding: 14px 4px;
    border-bottom: 1px solid rgba(79,209,229,.15) !important;
    font-size: 13px;
  }
  .dh-nav-actions {
    display: flex; gap: 14px; padding-top: 16px;
    align-items: center; flex-wrap: wrap;
  }
  .dh-nav-actions .dh-sign-in { padding: 8px 0; }
  .dh-nav-actions .dh-btn { padding: 12px 18px; }

  /* Live bar — let it wrap */
  .dh-live-bar .inner { padding: 10px 20px; }
  .dh-live-bar .spacer { display: none; }
  .dh-live-bar a { margin-left: 0; }
}

@media (max-width: 720px) {
  .dh-hero h1 { font-size: clamp(48px, 12vw, 80px); }
  .dh-hero-inner { padding: 60px 24px; }
  .dh-course-grid, .dh-stats, .dh-companies { grid-template-columns: 1fr 1fr; }
  .dh-footer-inner, .dh-footer-bottom { grid-template-columns: 1fr; }
  .dh-calc-tabs { flex-direction: column; }
  .dh-calc-tab  { border-left: 1px solid rgba(79,209,229,.35); }
  .dh-container { padding: 0 20px; }
  .dh-site-overline { display: none; }
}

@media (max-width: 480px) {
  .dh-stats { grid-template-columns: 1fr 1fr; }
  .dh-companies { grid-template-columns: 1fr 1fr; }
  .dh-hero .ctas { flex-direction: column; align-items: stretch; }
  .dh-hero .ctas .dh-btn { justify-content: center; }
  .dh-live-bar .inner { font-size: 10px; gap: 8px; }
}

/* fade-in on page change */
.dh-fade-in { animation: dhFadeIn .35s ease-out; }
@keyframes dhFadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* Tutor LMS visual hooks */
.tutor-wrap { color: var(--wp--preset--color--ink); }
.tutor-course-list-card { background: var(--wp--preset--color--navy-2) !important; border: 1px solid rgba(79,209,229,.35) !important; border-radius: 0 !important; }