/* ─────────────────────────────────────────
   TDEV — shared custom styles
   Tailwind CDN handles utilities; this file
   holds design-system tokens, animations,
   component overrides & article prose.
───────────────────────────────────────── */

:root {
  --navy:      #0d1e52;
  --navy-mid:  #1a3580;
  --navy-light:#f3f6fb;
  --orange:    #f5a623;
  --orange-lt: #fff8ec;
}

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

/* ── Reveal ──────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.d1 { transition-delay: .10s }
.d2 { transition-delay: .18s }
.d3 { transition-delay: .26s }
.d4 { transition-delay: .34s }
.d5 { transition-delay: .42s }

/* ── Gradient text ───────────────────── */
.grad-text {
  background: linear-gradient(135deg, #0d1e52 0%, #1a3580 60%, #f5a623 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Buttons ─────────────────────────── */
.btn-orange {
  background: #f5a623;
  transition: background .2s, transform .2s, box-shadow .2s;
  color: #fff;
}
.btn-orange:hover {
  background: #e09718;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245,166,35,.35);
}
.btn-navy {
  background: var(--navy);
  transition: background .2s, transform .2s, box-shadow .2s;
  color: #fff;
}
.btn-navy:hover {
  background: var(--navy-mid);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(13,30,82,.28);
}
.btn-outline {
  border: 1.5px solid #d0daf5;
  color: var(--navy);
  transition: border-color .2s, box-shadow .2s, transform .2s;
}
.btn-outline:hover {
  border-color: #f5a623;
  box-shadow: 0 4px 16px rgba(245,166,35,.15);
  transform: translateY(-2px);
}

/* ── Nav link ────────────────────────── */
.nav-link { position: relative; }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 2px;
  background: #f5a623;
  transition: width .25s ease;
}
.nav-link:hover::after,
.nav-link.active::after { width: 100%; }

/* ── Lang pill ───────────────────────── */
.lang-on  { background: #f5a623; color: #fff; }
.lang-off { color: rgba(255,255,255,.55); }
.lang-off:hover { color: #fff; }

/* ── Mobile drawer ───────────────────── */
#mob-drawer {
  transform: translateX(100%);
  transition: transform .3s cubic-bezier(.4,0,.2,1);
}
#mob-drawer.open { transform: translateX(0); }

/* ── Card hover ──────────────────────── */
.card-lift {
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.card-lift:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 48px rgba(13,30,82,.10);
  border-color: #c4d3eb !important;
}

/* ── Insight card hover ──────────────── */
.insight-card {
  transition: transform .25s, box-shadow .25s, border-color .25s;
  text-decoration: none;
}
.insight-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 48px rgba(13,30,82,.12);
  border-color: #94aed7 !important;
}

/* ── Floats ──────────────────────────── */
@keyframes float-a { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-14px)} }
@keyframes float-b { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-9px)}  }
@keyframes float-c { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-18px)} }
.fa { animation: float-a 6s ease-in-out infinite; }
.fb { animation: float-b 8s ease-in-out infinite 1.5s; }
.fc { animation: float-c 7s ease-in-out infinite .8s; }

/* ── Bounce ──────────────────────────── */
@keyframes bounce-y { 0%,100%{transform:translateY(0)} 50%{transform:translateY(7px)} }
.bounce-y { animation: bounce-y 2s ease-in-out infinite; }

/* ── Why cell ────────────────────────── */
.why-cell { transition: background .2s; }
.why-cell:hover { background: #eef2fb; }

/* ── Pulse dot ───────────────────────── */
@keyframes pulse-ring {
  0%   { transform: scale(.9); box-shadow: 0 0 0 0   rgba(245,166,35,.5); }
  70%  { transform: scale(1);  box-shadow: 0 0 0 8px rgba(245,166,35,0);  }
  100% { transform: scale(.9); box-shadow: 0 0 0 0   rgba(245,166,35,0);  }
}
.pulse-dot { animation: pulse-ring 2s ease-in-out infinite; }

/* ── Tags ────────────────────────────── */
.tag-navy   { background: var(--navy-light); color: var(--navy);  border: 1px solid #c4d3eb; }
.tag-orange { background: var(--orange-lt);  color: #a06b10;      border: 1px solid #fde8b0; }

/* ════════════════════════════════════════
   ARTICLE / PROSE
════════════════════════════════════════ */
.prose-sap h2 {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--navy);
  margin-top: 2.75rem;
  margin-bottom: .9rem;
  padding-top: 1.25rem;
  border-top: 1px solid #e4ecf6;
  line-height: 1.3;
}
.prose-sap h2:first-of-type {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}
.prose-sap h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--navy);
  margin-top: 1.75rem;
  margin-bottom: .6rem;
}
.prose-sap p {
  color: #475569;
  line-height: 1.85;
  margin-bottom: 1.2rem;
  font-size: 1rem;
}
.prose-sap ul {
  margin: .5rem 0 1.2rem 1.4rem;
  list-style: disc;
}
.prose-sap ol {
  margin: .5rem 0 1.2rem 1.4rem;
  list-style: decimal;
}
.prose-sap li {
  color: #475569;
  line-height: 1.75;
  margin-bottom: .4rem;
}
.prose-sap strong { color: var(--navy); font-weight: 700; }
.prose-sap a { color: var(--navy-mid); text-decoration: underline; text-underline-offset: 3px; }
.prose-sap a:hover { color: var(--orange); }

/* Inline code */
.prose-sap code {
  font-family: ui-monospace, 'JetBrains Mono', 'Courier New', monospace;
  font-size: .82rem;
  background: #eef2fb;
  color: var(--navy-mid);
  padding: .2rem .48rem;
  border-radius: .35rem;
  border: 1px solid #dde5f5;
  white-space: nowrap;
}

/* Code block — light theme */
.prose-sap pre {
  background: #f8f9fc;
  border: 1.5px solid #e0e8f5;
  border-radius: .85rem;
  overflow: hidden;           /* clip the gradient stripe */
  margin: 1.75rem 0;
  box-shadow: 0 2px 12px rgba(13,30,82,.06);
}

/* Gradient accent stripe at top */
.prose-sap pre::before {
  content: '';
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--navy) 0%, var(--navy-mid) 60%, var(--orange) 100%);
}

.prose-sap pre code {
  background: none;
  color: #1e2d5e;
  border: none;
  padding: 1.3rem 1.6rem;
  font-size: .81rem;
  white-space: pre;
  line-height: 1.72;
  display: block;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  tab-size: 2;
}

/* Blockquote */
.prose-sap blockquote {
  border-left: 4px solid var(--orange);
  padding: .85rem 1.25rem;
  background: var(--orange-lt);
  border-radius: 0 .75rem .75rem 0;
  margin: 1.75rem 0;
}
.prose-sap blockquote p {
  margin-bottom: 0;
  color: #7c5c1a;
  font-style: italic;
}

/* Callout / info box */
.prose-sap .callout {
  background: var(--navy-light);
  border: 1.5px solid #c4d3eb;
  border-radius: 1rem;
  padding: 1.1rem 1.4rem;
  margin: 1.75rem 0;
}
.prose-sap .callout p { margin-bottom: 0; }

/* Comparison table */
.prose-sap table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.75rem 0;
  font-size: .9rem;
}
.prose-sap th {
  background: var(--navy);
  color: #fff;
  padding: .65rem 1rem;
  text-align: left;
  font-weight: 700;
}
.prose-sap td {
  padding: .6rem 1rem;
  color: #475569;
  border-bottom: 1px solid #e4ecf6;
}
.prose-sap tr:nth-child(even) td { background: #f8fafd; }