/* =========================================================
   Small AI Hub — Global Stylesheet
   ---------------------------------------------------------
   Sections:
   1.  CSS variables & resets
   2.  Layout primitives
   3.  Navigation (sticky navbar + mobile menu)
   4.  Buttons & inputs
   5.  Hero & homepage sections
   6.  Card grids (featured + blog)
   7.  Sidebar / category filter
   8.  Single article layout
   9.  About & Contact pages
   10. Footer
   11. Newsletter
   12. Responsive breakpoints
   ========================================================= */

/* 1. CSS variables & resets ------------------------------ */
:root {
  --color-primary: #1E3A5F;
  --color-primary-soft: #2a4d7a;
  --color-accent: #2D7DD2;
  --color-accent-hover: #246bb0;
  --color-bg: #FFFFFF;
  --color-bg-alt: #f5f7fb;
  --color-bg-tint: #eef3fa;
  --color-text: #2C2C2C;
  --color-text-soft: #5a6573;
  --color-border: #e2e6ee;
  --color-success: #1f8a4c;
  --color-danger: #c83232;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(30, 58, 95, 0.06);
  --shadow-md: 0 6px 18px rgba(30, 58, 95, 0.08);
  --shadow-lg: 0 18px 40px rgba(30, 58, 95, 0.12);
  --max-width: 1180px;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; display: block; height: auto; }

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.18s ease;
}
a:hover { color: var(--color-accent-hover); }

h1, h2, h3, h4 {
  color: var(--color-primary);
  font-weight: 700;
  line-height: 1.25;
  margin: 0 0 0.6em;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.1rem, 4.4vw, 3.25rem); }
h2 { font-size: clamp(1.55rem, 2.6vw, 2.1rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1.1em; }

ul { margin: 0 0 1em 1.1em; padding: 0; }
li { margin-bottom: 0.4em; }

/* 2. Layout primitives ----------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 72px 0; }
.section-tight { padding: 48px 0; }
.section-alt { background: var(--color-bg-alt); }

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 14px;
}

.section-heading { max-width: 720px; margin-bottom: 40px; }
.section-heading p { color: var(--color-text-soft); font-size: 1.05rem; }

/* 3. Navigation ----------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.18rem;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}
.nav-logo:hover { color: var(--color-primary); }

.nav-logo .logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 9px;
  font-size: 0.95rem;
}

.nav-logo .logo-img {
  width: 36px;
  height: 36px;
  display: inline-block;
  vertical-align: middle;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  display: inline-block;
  padding: 8px 14px;
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
  border-radius: 8px;
  transition: background 0.18s ease, color 0.18s ease;
}
.nav-links a:hover,
.nav-links a.active {
  background: var(--color-bg-tint);
  color: var(--color-primary);
}

.nav-cta {
  margin-left: 10px;
}

/* Nav dropdown -------------------------------------- */
.has-dropdown { position: relative; }
.has-dropdown > a::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 0.6rem;
  margin-left: 6px;
  opacity: 0.7;
}
.dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 240px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 8px;
  list-style: none;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
}
.has-dropdown:hover > .dropdown,
.has-dropdown:focus-within > .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown li { margin: 0; }
.dropdown a {
  display: block;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.92rem;
  color: var(--color-text);
  font-weight: 500;
}
.dropdown a:hover { background: var(--color-bg-tint); color: var(--color-primary); }

.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  font-size: 1.4rem;
  color: var(--color-primary);
  cursor: pointer;
  padding: 8px;
}

/* 4. Buttons & inputs ----------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  transition: transform 0.15s ease, background 0.18s ease, color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
  font-family: inherit;
  line-height: 1;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-dark {
  background: var(--color-primary);
  color: #fff;
}
.btn-dark:hover {
  background: var(--color-primary-soft);
  color: #fff;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-border);
}
.btn-outline:hover {
  background: var(--color-bg-tint);
  border-color: var(--color-accent);
  color: var(--color-primary);
}

.btn-link {
  background: transparent;
  color: var(--color-accent);
  padding: 8px 0;
  font-weight: 600;
}
.btn-link:hover { color: var(--color-accent-hover); }

.input,
.textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--color-text);
  background: #fff;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}
.input:focus,
.textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(45, 125, 210, 0.16);
}
.textarea { resize: vertical; min-height: 140px; line-height: 1.55; }

.form-field { margin-bottom: 18px; }
.form-field label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
  color: var(--color-primary);
}
.form-error {
  display: block;
  margin-top: 6px;
  color: var(--color-danger);
  font-size: 0.84rem;
  font-weight: 500;
  min-height: 1em;
}
.form-status {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 500;
  display: none;
}
.form-status.show { display: block; }
.form-status.success {
  background: rgba(31, 138, 76, 0.1);
  color: var(--color-success);
  border: 1px solid rgba(31, 138, 76, 0.25);
}
.form-status.error {
  background: rgba(200, 50, 50, 0.08);
  color: var(--color-danger);
  border: 1px solid rgba(200, 50, 50, 0.25);
}

/* 5. Hero ----------------------------------------------- */
.hero {
  padding: 96px 0 88px;
  background:
    radial-gradient(circle at 12% 20%, rgba(45, 125, 210, 0.12), transparent 55%),
    radial-gradient(circle at 92% 80%, rgba(30, 58, 95, 0.08), transparent 50%),
    var(--color-bg);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero-copy h1 { margin-bottom: 18px; }
.hero-copy .hero-sub {
  font-size: 1.15rem;
  color: var(--color-text-soft);
  margin-bottom: 28px;
  max-width: 540px;
}

.hero-cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-stats {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.hero-stat strong {
  display: block;
  font-size: 1.5rem;
  color: var(--color-primary);
  font-weight: 700;
}
.hero-stat span {
  font-size: 0.85rem;
  color: var(--color-text-soft);
}

.hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4/3;
}
.hero-visual img { width: 100%; height: 100%; object-fit: cover; }
.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(30, 58, 95, 0.18), rgba(30, 58, 95, 0));
}

/* 6. Card grids ----------------------------------------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.card-grid.two-col { grid-template-columns: repeat(2, 1fr); }

.article-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(45, 125, 210, 0.4);
}

.article-card .card-media {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-bg-alt);
}
.article-card .card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.article-card:hover .card-media img { transform: scale(1.04); }

.article-card .card-body {
  padding: 22px 22px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.category-tag {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-bg-tint);
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 14px;
  align-self: flex-start;
}

.article-card h3 {
  font-size: 1.18rem;
  margin-bottom: 10px;
  color: var(--color-primary);
  line-height: 1.35;
}
.article-card p {
  color: var(--color-text-soft);
  font-size: 0.95rem;
  margin-bottom: 18px;
  flex: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--color-text-soft);
  margin-bottom: 12px;
}
.card-meta i { color: var(--color-accent); }

.read-more {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.read-more i { transition: transform 0.18s ease; }
.article-card:hover .read-more i { transform: translateX(3px); }

/* 7. Blog layout ---------------------------------------- */
.blog-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 48px;
  align-items: start;
}

.blog-articles { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.sidebar {
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  padding: 26px;
  position: sticky;
  top: 96px;
}
.sidebar h4 {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: 16px;
}
.sidebar ul { list-style: none; margin: 0; padding: 0; }
.sidebar li { margin-bottom: 4px; }
.sidebar button.filter-btn {
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.93rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.16s ease, color 0.16s ease;
}
.sidebar button.filter-btn:hover { background: #fff; }
.sidebar button.filter-btn.active {
  background: var(--color-primary);
  color: #fff;
}
.sidebar .count {
  background: var(--color-bg);
  color: var(--color-text-soft);
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.sidebar button.filter-btn.active .count { background: rgba(255,255,255,0.18); color: #fff; }

.empty-state {
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  padding: 48px 24px;
  text-align: center;
  color: var(--color-text-soft);
  grid-column: 1 / -1;
}

/* Page header used on blog, categories, about, contact -- */
.page-header {
  padding: 72px 0 40px;
  background: linear-gradient(180deg, var(--color-bg-tint), var(--color-bg));
  border-bottom: 1px solid var(--color-border);
}
.page-header h1 { margin-bottom: 12px; }
.page-header p { max-width: 640px; color: var(--color-text-soft); font-size: 1.05rem; }

.breadcrumbs {
  display: flex;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text-soft);
  margin-bottom: 18px;
}
.breadcrumbs a { color: var(--color-text-soft); }
.breadcrumbs a:hover { color: var(--color-accent); }

/* 8. Single article ------------------------------------- */
.article-page { padding: 56px 0 80px; }

.article-hero {
  max-width: 800px;
  margin: 0 auto 32px;
}
.article-hero h1 {
  font-size: clamp(2rem, 3.6vw, 2.7rem);
  margin-bottom: 18px;
}
.article-meta-row {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: var(--color-text-soft);
  margin-bottom: 24px;
}
.article-meta-row span { display: inline-flex; align-items: center; gap: 6px; }

.article-cover {
  max-width: 1000px;
  margin: 0 auto 40px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.article-cover img { width: 100%; aspect-ratio: 16/8; object-fit: cover; }

.article-body {
  max-width: 720px;
  margin: 0 auto;
  font-size: 1.05rem;
}
.article-body h2 { font-size: 1.55rem; margin-top: 36px; }
.article-body h3 { font-size: 1.2rem; margin-top: 28px; }
.article-body p { color: #3c3c3c; }

.related {
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--color-border);
}

/* 9. About & Contact ------------------------------------ */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
.about-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  aspect-ratio: 4/3;
}
.about-image img { width: 100%; height: 100%; object-fit: cover; }

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.value-card {
  padding: 28px 24px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: box-shadow 0.18s ease, transform 0.18s ease;
}
.value-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.value-card .icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--color-bg-tint);
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.1rem;
}
.value-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.value-card p { color: var(--color-text-soft); font-size: 0.94rem; margin: 0; }

.contact-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: start;
}
.contact-info-card {
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.contact-info-card h3 { margin-bottom: 8px; }
.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  border-top: 1px solid var(--color-border);
}
.contact-info-item:first-of-type { border-top: 0; }
.contact-info-item i {
  color: var(--color-accent);
  font-size: 1.05rem;
  margin-top: 4px;
}
.contact-info-item strong { display: block; color: var(--color-primary); }
.contact-info-item span { color: var(--color-text-soft); font-size: 0.92rem; }

/* 10. Footer -------------------------------------------- */
.footer-brand .nav-logo { color: #fff; }
.footer-brand .nav-logo:hover { color: #fff; }
.footer-brand .logo-mark { background: #fff; color: var(--color-primary); }
.footer-newsletter p { color: #b9c4d4; font-size: 0.93rem; }
.newsletter-card .eyebrow { color: #cad4e3; }
.contact-info-card .lede { color: var(--color-text-soft); margin-bottom: 6px; }

.site-footer {
  background: var(--color-primary);
  color: #cfd8e6;
  padding: 64px 0 28px;
  margin-top: 80px;
}
.site-footer h4 {
  color: #fff;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.4fr;
  gap: 40px;
}
.footer-brand p { color: #b9c4d4; font-size: 0.95rem; max-width: 320px; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 8px; }
.footer-links a {
  color: #cfd8e6;
  font-size: 0.93rem;
}
.footer-links a:hover { color: #fff; }

.footer-social { display: flex; gap: 12px; margin-top: 16px; }
.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  color: #fff;
  font-size: 0.95rem;
  transition: background 0.18s ease;
}
.footer-social a:hover { background: var(--color-accent); }

.footer-bottom {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.12);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: #9aa6b8;
}

/* 11. Newsletter ---------------------------------------- */
.newsletter-card {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-soft));
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  color: #fff;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
  box-shadow: var(--shadow-lg);
}
.newsletter-card h2 { color: #fff; }
.newsletter-card p { color: #cad4e3; max-width: 460px; margin: 0; }

.newsletter-form {
  display: flex;
  gap: 10px;
  background: rgba(255,255,255,0.08);
  padding: 8px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.18);
}
.newsletter-form input {
  flex: 1;
  background: transparent;
  border: 0;
  padding: 12px 16px;
  color: #fff;
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
}
.newsletter-form input::placeholder { color: rgba(255,255,255,0.62); }
.newsletter-form button {
  background: #fff;
  color: var(--color-primary);
  border: 0;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease;
}
.newsletter-form button:hover { background: var(--color-accent); color: #fff; }
.newsletter-status { margin-top: 14px; min-height: 1.2em; font-size: 0.9rem; }
.newsletter-status.success { color: #b8ffd9; }
.newsletter-status.error { color: #ffd2d2; }

.footer-newsletter .newsletter-form {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.15);
}
.footer-newsletter .newsletter-form button { background: var(--color-accent); color: #fff; }
.footer-newsletter .newsletter-form button:hover { background: var(--color-accent-hover); }

/* 12. Responsive --------------------------------------- */
@media (max-width: 960px) {
  .hero { padding: 64px 0; }
  .hero-grid,
  .about-grid,
  .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-layout { grid-template-columns: 1fr; }
  .blog-articles { grid-template-columns: repeat(2, 1fr); }
  .sidebar { position: static; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .newsletter-card { grid-template-columns: 1fr; padding: 40px 28px; }
}

@media (max-width: 640px) {
  .section { padding: 56px 0; }
  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 20px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 14px; border-radius: 8px; }
  .has-dropdown > a::after { display: none; }
  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: 0;
    padding: 0 0 0 14px;
    background: transparent;
    min-width: 0;
  }
  .dropdown a { padding: 8px 12px; font-size: 0.9rem; }
  .nav-cta { margin-left: 0; margin-top: 8px; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .card-grid,
  .card-grid.two-col,
  .blog-articles,
  .values-grid,
  .footer-grid { grid-template-columns: 1fr; }
  .newsletter-form { flex-direction: column; border-radius: var(--radius-md); }
  .newsletter-form button { width: 100%; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ============================================================== */
/*  PromptVault promo (homepage section + footer band)             */
/*  Different palette from Small AI Hub navy — intentional         */
/* ============================================================== */

.promptvault-promo {
  background: linear-gradient(135deg, #1a0d3d 0%, #2d1670 50%, #4527a0 100%);
  color: #fff;
  padding: 44px 0;
  position: relative;
  overflow: hidden;
}
.promptvault-promo::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(167, 139, 250, 0.22) 0%, transparent 60%);
  pointer-events: none;
}
.promptvault-promo .container { position: relative; }
.pv-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 36px;
  align-items: center;
}
.pv-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.74rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #c4b5fd;
  margin-bottom: 10px;
}
.pv-eyebrow i { color: #a78bfa; }
.promptvault-promo h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.015em;
  line-height: 1.2;
  margin-bottom: 10px;
}
.pv-lede {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.94rem;
  line-height: 1.55;
  margin-bottom: 16px;
  max-width: 540px;
}
.pv-bullets {
  list-style: none;
  padding: 0;
  margin: 0 0 18px 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 18px;
}
.pv-bullets li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.86rem;
  margin: 0;
}
.pv-bullets li i {
  color: #a78bfa;
  font-size: 0.72rem;
  flex-shrink: 0;
}
.pv-btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: #fff;
  color: #1a0d3d !important;
  padding: 11px 22px;
  font-weight: 700;
  border-radius: 9px;
  text-decoration: none;
  font-size: 0.93rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.22);
}
.pv-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.32);
}
.pv-visual {
  display: flex;
  justify-content: center;
}
.pv-visual img {
  max-width: 340px;
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.08);
}
@media (max-width: 880px) {
  .promptvault-promo { padding: 36px 0; }
  .pv-grid { grid-template-columns: 1fr; gap: 24px; }
  .promptvault-promo h2 { font-size: 1.45rem; }
  .pv-bullets { grid-template-columns: 1fr; }
  .pv-visual { order: -1; }
  .pv-visual img { max-width: 280px; }
}

/* Footer promo band */
.footer-promo {
  background: linear-gradient(135deg, #2d1670 0%, #4527a0 100%);
  color: #fff;
  border-radius: 14px;
  padding: 22px 28px;
  margin-bottom: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-promo-text strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 4px;
  color: #fff;
}
.footer-promo-text span {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.92rem;
}
.footer-promo-btn {
  background: #fff;
  color: #1a0d3d !important;
  padding: 12px 22px;
  font-weight: 700;
  border-radius: 9px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  font-size: 0.95rem;
  transition: transform 0.15s ease;
}
.footer-promo-btn:hover {
  transform: translateY(-1px);
}
/* PromptVault top banner — contained card under navbar */
.pv-banner {
  margin: 28px 0 8px;
  background: linear-gradient(135deg, #1a0d3d 0%, #4527a0 100%);
  border-radius: 14px;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 26px rgba(26, 13, 61, 0.18);
}
.pv-banner::after {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(167, 139, 250, 0.18) 0%, transparent 65%);
  pointer-events: none;
}
.pv-banner-icon {
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #c4b5fd;
  font-size: 1.15rem;
  flex-shrink: 0;
}
.pv-banner-text {
  flex: 1;
  min-width: 0;
  position: relative;
}
.pv-banner-text strong {
  display: block;
  color: #fff;
  font-size: 0.99rem;
  font-weight: 700;
  margin-bottom: 3px;
  letter-spacing: -0.005em;
}
.pv-banner-text span {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.88rem;
  line-height: 1.45;
}
.pv-banner-btn {
  background: #fff;
  color: #1a0d3d !important;
  padding: 11px 22px;
  font-weight: 700;
  border-radius: 9px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  font-size: 0.92rem;
  flex-shrink: 0;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
  position: relative;
}
.pv-banner-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.24);
}
@media (max-width: 720px) {
  .pv-banner {
    flex-wrap: wrap;
    padding: 16px;
    gap: 14px;
  }
  .pv-banner-icon { display: none; }
  .pv-banner-btn { width: 100%; justify-content: center; }
}
/* Multi-color Chrome logo alignment inside buttons */
.chrome-svg {
  display: inline-block;
  vertical-align: -3px;
  flex-shrink: 0;
}