/* final.css — complete responsive & polished stylesheet
   - Mobile-first, fluid typography, accessible contrasts
   - Footer centered and professional
   - Intelligent responsive image rules (aspect-ratio, srcset-friendly)
   - Larger hit targets for buttons, reduced-motion support, print rules
   - Includes Subtle visual polish: soft gradients, refined shadows
   Drop-in replacement for previous final.css. */

:root {
  --bg-top: #eaf6fb;
  --bg-bottom: #ffffff;
  --brand-blue: #0b61b2;
  --brand-teal: #0ea5a3;
  --accent-purple: #7c5cff;
  --muted: #505b66;
  --card: #ffffff;
  --soft: #f6fbff;
  --btn-radius: 12px;
  --max-width: 1200px;
  --text: #0f172a;
  --shadow-1: 0 8px 28px rgba(10, 25, 45, 0.06);
  --shadow-2: 0 14px 44px rgba(10, 25, 45, 0.08);
  --focus-ring: rgba(14, 165, 163, 0.18);
  --glass: rgba(255, 255, 255, 0.6);
  --gap: 1rem;
  --bp-sm: 520px;
  /* phones */
  --bp-md: 768px;
  /* small tablets */
  --bp-lg: 980px;
  /* desktop */
}

/* === RESET & BASE (mobile-first) === */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0
}

html,
body {
  height: 100%
}

body {
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial;
  background: linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
  font-size: 16px;
  padding: 1rem;
}

/* fluid type scale */
h1 {
  font-size: clamp(1.5rem, 2.6vw, 2.6rem);
  line-height: 1.05
}

h2 {
  font-size: clamp(1.1rem, 2.2vw, 1.7rem)
}

.section h3 {
  font-size: clamp(1rem, 1.8vw, 1.35rem)
}

.container {
  max-width: var(--max-width);
  margin: 1rem auto;
  padding: 1rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.99));
  border-radius: 12px;
  box-shadow: var(--shadow-1);
  border: 1px solid rgba(10, 25, 45, 0.03);
}

/* Top nav */
.compound-top-nav {
  display: flex;
  gap: .6rem;
  align-items: center;
  padding: .5rem;
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.75), rgba(255, 255, 255, 0.5));
  border: 1px solid rgba(8, 24, 48, 0.04);
  position: sticky;
  top: 12px;
  z-index: 1200;
  backdrop-filter: blur(6px)
}

.compound-top-nav .btn {
  padding: .55rem .9rem;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: .4rem
}

/* links */
a {
  color: var(--brand-blue);
  text-decoration: none
}

a:hover,
a:focus {
  text-decoration: underline
}

/* header */
.site-header {
  text-align: center;
  padding: 1.5rem 1rem;
  background: linear-gradient(180deg, rgba(242, 251, 255, 0.75), rgba(255, 255, 255, 0.95));
  border-radius: 12px;
  margin-bottom: 1rem
}

.site-header h1 {
  margin-bottom: .3rem;
  font-weight: 800;
  display: inline-block;
  padding: 6px 10px;
  background: linear-gradient(90deg, var(--accent-purple), var(--brand-blue) 55%, var(--brand-teal));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent
}

.site-header .subtitle {
  color: #334155;
  font-size: .98rem
}

/* layout (mobile-first) */
.layout {
  display: block
}

.content {
  width: 100%
}

.sidebar {
  width: 100%;
  margin-top: 1rem
}

.sidebar img {
  width: 100%;
  border-radius: 10px;
  margin-bottom: 1rem;
  box-shadow: 0 8px 28px rgba(10, 25, 45, 0.06)
}

/* hero */
.hero {
  display: block;
  margin-bottom: 1.25rem
}

.hero-img {
  width: 100%;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 12px 34px rgba(10, 25, 45, 0.06)
}

.hero-text {
  margin-top: .9rem
}

/* sections */
.section {
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(13, 31, 55, 0.04)
}

.section h2,
.section h3 {
  font-family: "Merriweather", Georgia, serif;
  font-weight: 700;
  color: #07243a;
  margin-bottom: .6rem
}

.section p,
.section ul,
.section ol,
.section table {
  margin-top: .75rem;
  color: #334155
}

/* images: intelligent defaults (see notes further down) */
img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover
}

.inline-img,
figure img {
  margin: 1rem auto;
  width: clamp(260px, 86%, 900px);
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(12, 34, 56, 0.06)
}

.hero-img {
  aspect-ratio: 16/10;
  max-height: min(60vh, 640px)
}

.sidebar img {
  max-width: 300px;
  aspect-ratio: 1/1
}

/* image gallery */
.image-gallery {
  display: grid;
  gap: .7rem;
  grid-template-columns: 1fr
}

.image-gallery img {
  width: 100%;
  height: auto;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: 10px
}

@media(min-width:var(--bp-md)) {
  .image-gallery {
    grid-template-columns: repeat(3, 1fr)
  }

  .image-gallery img:first-child {
    grid-column: span 2;
    grid-row: span 2;
    min-height: 240px
  }
}

@media(max-width:420px) {
  .hero-img {
    aspect-ratio: 4/3;
    max-height: 48vh
  }

  .image-gallery img {
    aspect-ratio: 4/3
  }
}

/* tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.25rem;
  font-size: 1rem
}

table th,
table td {
  border: 1px solid rgba(13, 31, 55, 0.05);
  padding: .65rem 1rem;
  text-align: left
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .8rem 1rem;
  border-radius: var(--btn-radius);
  text-decoration: none;
  color: #fff;
  font-weight: 800;
  transition: transform .12s ease, box-shadow .12s ease
}

.btn:focus {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px
}

.btn-depot {
  background: linear-gradient(90deg, #10b981, #0ea5a3)
}

.btn-amazon {
  background: linear-gradient(90deg, #ff9900, #ff7f00)
}

.btn-shop {
  background: #fff;
  color: #083a66;
  border: 1px solid rgba(11, 75, 120, 0.08);
  padding: .7rem .95rem;
  border-radius: 12px
}

.btn-buy-now {
  background: linear-gradient(180deg, var(--brand-blue), #004a91);
  padding: .8rem 1.05rem
}

.cta-row {
  display: flex;
  gap: .6rem;
  flex-wrap: wrap;
  margin-top: .8rem
}

/* compound card */
.compound {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), var(--soft));
  padding: 14px;
  border-radius: 12px;
  border: 1px solid rgba(11, 75, 120, 0.04);
  box-shadow: 0 8px 28px rgba(10, 25, 45, 0.03);
  margin-bottom: 12px
}

/* next/prev floating buttons */
.next-section-button,
.prev-section-button {
  position: fixed;
  bottom: 18px;
  padding: 10px 14px;
  border-radius: 12px;
  font-weight: 800;
  color: #fff;
  text-decoration: none;
  box-shadow: 0 12px 36px rgba(7, 24, 40, 0.18);
  transition: transform .12s ease;
  z-index: 1100
}

.next-section-button {
  right: 16px;
  background: linear-gradient(90deg, var(--brand-teal), #08a7a0)
}

.prev-section-button {
  left: 16px;
  background: linear-gradient(90deg, var(--brand-blue), #005b9a)
}

@media(max-width:520px) {

  .next-section-button,
  .prev-section-button {
    right: 12px;
    left: 12px;
    padding: 8px 10px;
    font-size: .95rem
  }
}

/* responsive grid */
@media(min-width:var(--bp-md)) {
  .layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2rem;
    align-items: start
  }

  .hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem
  }

  .hero-text {
    align-self: center
  }
}

@media(min-width:var(--bp-lg)) {
  .container {
    padding: 2.25rem
  }

  .sidebar {
    position: sticky;
    top: 110px
  }
}

/* Accessibility: reduce motion */
@media(prefers-reduced-motion:reduce) {
  * {
    transition: none !important;
    animation: none !important
  }
}

/* badges & kicker */
.badge {
  display: inline-block;
  padding: .25rem .5rem;
  background: linear-gradient(90deg, rgba(14, 165, 163, 0.12), rgba(11, 75, 120, 0.06));
  color: var(--brand-blue);
  border-radius: 999px;
  font-weight: 700;
  font-size: .85rem;
  margin-left: .6rem
}

.kicker {
  font-weight: 800;
  color: var(--brand-blue)
}

/* print rules */
@media print {

  .compound-top-nav,
  .cta-row,
  .btn,
  .btn-buy-now,
  .next-section-button,
  .prev-section-button {
    display: none !important
  }

  .container {
    box-shadow: none;
    background: transparent;
    padding: 0;
    margin: 0
  }

  .site-header {
    background: transparent;
    border-radius: 0;
    padding: 0;
    margin-bottom: .5rem
  }

  .site-header h1 {
    color: #000;
    -webkit-text-fill-color: #000;
    background: none;
    text-shadow: none
  }

  .image-gallery {
    display: none
  }

  .section {
    border: none;
    padding: 0;
    margin: 0 0 12px
  }

  .mini-table,
  table {
    page-break-inside: avoid;
    font-size: 12pt
  }
}

/* Footer: centered, professional */
.site-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: linear-gradient(180deg, #f6fbff, #ffffff);
  color: #243b4c;
  text-align: center;
  padding: 1.25rem 1rem;
  font-weight: 400;
  margin-top: 2rem;
  font-size: 0.95rem;
  border-radius: 10px;
  border: 1px solid rgba(11, 75, 120, 0.04);
  box-shadow: 0 6px 18px rgba(10, 25, 45, 0.04)
}

.site-footer .footer-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center
}

.site-footer .footer-links a {
  color: var(--brand-blue);
  font-weight: 600;
  text-decoration: none;
  font-size: 0.95rem
}

.site-footer .footer-links a:hover {
  text-decoration: underline
}

.site-footer .legal {
  font-size: 0.9rem;
  color: var(--muted);
  max-width: 880px
}

@media(max-width:520px) {
  .site-footer {
    padding: 1rem;
    font-size: 0.9rem
  }

  .site-footer .footer-links {
    gap: 10px
  }
}

footer {
  padding-top: 10px;
  color: var(--muted);
  font-size: 0.95rem;
  text-align: center;
  border-top: 1px solid rgba(11, 75, 120, 0.03);
  margin-top: 20px
}

/* === Intelligent responsive image rules (additional polish) === */
/* Use data-aspect attributes if you want to force a specific ratio: data-aspect="16/9" */
.article-image,
.inline-img,
figure img {
  width: clamp(260px, 86%, 900px);
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1rem auto;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 10px 30px rgba(12, 34, 56, 0.06)
}

/* preserve layout space: use aspect-ratio when available or require width/height attributes */
.article-image[style],
.inline-img[style] {
  aspect-ratio: attr(data-aspect-ratio, 16/9)
}

/* hero image tighter control */
.hero-img {
  width: 100%;
  aspect-ratio: 16/10;
  max-height: min(60vh, 640px);
  object-fit: cover;
  border-radius: 12px
}

/* sidebar thumbnails consistent */
.sidebar img {
  width: 100%;
  max-width: 300px;
  aspect-ratio: 1/1;
  object-fit: cover;
  border-radius: 10px
}

/* gallery tiles */
.image-gallery {
  display: grid;
  gap: .7rem;
  grid-template-columns: 1fr
}

.image-gallery img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: 10px
}

@media(min-width:768px) {
  .image-gallery {
    grid-template-columns: repeat(3, 1fr)
  }

  .image-gallery img:first-child {
    grid-column: span 2;
    grid-row: span 2;
    min-height: 240px
  }
}

@media(max-width:420px) {
  .hero-img {
    aspect-ratio: 4/3;
    max-height: 48vh
  }

  .image-gallery img {
    aspect-ratio: 4/3
  }
}

/* Lazy-loading hint class for below-the-fold images */
.lazy-hidden {
  opacity: 0;
  transform: translateY(8px)
}

.lazy-visible {
  opacity: 1;
  transform: none;
  transition: opacity .36s ease, transform .36s ease
}

/* small helpers */
code {
  background: #f6f8fb;
  padding: .15rem .4rem;
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Roboto Mono, Courier New, monospace
}

/* accessibility focus polish */
:focus {
  outline-offset: 3px
}

a:focus,
button:focus,
.btn:focus {
  outline: 3px solid var(--focus-ring);
  border-radius: 10px
}

/* legacy helper */
img {
  max-width: 100%;
  height: auto
}

/* end of file */