/* GoRoute E-Invoicing Blog — style */

:root {
  --gr-ink: #0B1730;
  --gr-ink-soft: #3b4666;
  --gr-muted: #6b7489;
  --gr-line: #e6e9f2;
  --gr-line-soft: #eceef5;
  --gr-bg: #ffffff;
  --gr-bg-soft: #f6f8fd;
  --gr-bg-warm: #faf6f0;
  --gr-pill: #f1f2f6;
  --gr-brand: #1f3cff;
  --gr-brand-ink: #162db7;
  --gr-accent: #12b981;
  --gr-maxw: 1180px;
  --gr-maxw-narrow: 760px;
  --gr-radius: 16px;
  --gr-radius-sm: 10px;
  --gr-shadow: 0 10px 30px rgba(11, 23, 48, 0.06);
  --gr-shadow-hover: 0 16px 40px rgba(11, 23, 48, 0.10);
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: inherit;
  background: transparent;
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--gr-brand); text-decoration: none; }
a:hover { color: var(--gr-brand-ink); text-decoration: underline; }

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

.container { max-width: var(--gr-maxw); margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: var(--gr-maxw-narrow); }

.skip-link {
  position: absolute; left: -9999px;
}
.skip-link:focus {
  left: 16px; top: 16px; background: #fff; padding: 8px 12px;
  border-radius: 6px; box-shadow: var(--gr-shadow); z-index: 100;
}

/* ----- site header ----- */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--gr-line);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px;
}
.site-header__brand img { display: block; height: 32px; width: auto; }
.site-header__nav { display: flex; align-items: center; gap: 22px; }
.site-header__nav a {
  color: var(--gr-ink); font-weight: 500; font-size: 15px;
}
.site-header__nav a[aria-current="page"] { color: var(--gr-brand); }
.site-header__cta {
  background: var(--gr-brand); color: #fff !important;
  padding: 8px 16px; border-radius: 8px; font-weight: 600;
}
.site-header__cta:hover { background: var(--gr-brand-ink); text-decoration: none; }

@media (max-width: 720px) {
  .site-header__nav a:not(.site-header__cta) { display: none; }
}

/* ----- hub / landing ----- */
.hub {
  background: linear-gradient(180deg, var(--gr-bg-warm) 0%, #ffffff 100%);
  padding: 56px 0 32px;
}
.hub .container { border-bottom: 1px solid var(--gr-line); padding-bottom: 28px; }
.hub__eyebrow {
  text-transform: uppercase; letter-spacing: 0.08em;
  font-size: 12px; font-weight: 700; color: var(--gr-brand);
  margin: 0 0 12px;
}
.hub__title {
  font-size: clamp(36px, 5vw, 56px); line-height: 1.1;
  font-weight: 800; margin: 8px 0 14px; color: var(--gr-ink);
  letter-spacing: -0.02em;
}
.hub__lede {
  font-size: clamp(17px, 1.6vw, 20px); color: var(--gr-ink-soft); max-width: 780px; margin: 0;
}

.breadcrumb--hub { margin-bottom: 8px; }
.breadcrumb--hub ol { font-size: 14px; color: var(--gr-ink-soft); }
.breadcrumb--hub a { color: var(--gr-ink); font-weight: 500; }
.breadcrumb--hub li + li::before { content: "\203A"; margin: 0 8px; color: var(--gr-muted); }
.breadcrumb--hub [aria-current="page"] { color: var(--gr-ink-soft); }

/* Controls bar (search + filter + subscribe) */
.hub__controls-wrap {
  margin-top: 28px;
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
}
.hub__controls {
  flex: 1 1 640px;
  background: #fff; border: 1px solid var(--gr-line);
  border-radius: var(--gr-radius); padding: 20px;
  box-shadow: var(--gr-shadow);
  display: grid; gap: 14px;
  grid-template-columns: 1fr;
}
.hub__search, .hub__filter {
  display: flex; align-items: center; gap: 10px;
  border: 1px solid var(--gr-line); border-radius: 999px;
  padding: 12px 18px; background: #fff;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.hub__search:focus-within, .hub__filter:focus-within {
  border-color: var(--gr-brand); box-shadow: 0 0 0 3px rgba(31,60,255,0.12);
}
.hub__search svg { color: var(--gr-muted); flex: 0 0 auto; }
.hub__search input, .hub__filter select {
  border: 0; outline: 0; background: transparent; width: 100%;
  font: inherit; font-size: 16px; color: var(--gr-ink);
}
.hub__filter { position: relative; }
.hub__filter::after {
  content: ""; position: absolute; right: 22px; top: 50%;
  width: 10px; height: 10px; border-right: 2px solid var(--gr-ink-soft);
  border-bottom: 2px solid var(--gr-ink-soft); transform: translateY(-75%) rotate(45deg);
  pointer-events: none;
}
.hub__filter select {
  appearance: none; -webkit-appearance: none; padding-right: 24px;
  cursor: pointer;
}
.hub__subscribe {
  justify-self: start; padding: 4px 0; font-size: 16px;
  color: var(--gr-ink) !important; font-weight: 700;
  text-decoration: underline; text-underline-offset: 4px;
}
.hub__subscribe:hover { color: var(--gr-brand) !important; }
.hub__count { margin: 0; font-size: 15px; color: var(--gr-ink-soft); align-self: flex-end; }
.hub__count strong { color: var(--gr-ink); font-weight: 700; }
.hub__empty { text-align: center; padding: 40px 0; color: var(--gr-muted); }

.chip {
  display: inline-block; background: var(--gr-pill); border: 0;
  padding: 6px 14px; border-radius: 999px; font-size: 13px; color: var(--gr-ink-soft);
}
.chip:hover { background: #e7e9f1; text-decoration: none; }
.chip--small { font-size: 12px; padding: 3px 10px; margin-right: 4px; }

/* ----- post grid (Tickstar-style cards) ----- */
.post-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 32px; margin: 40px 0 24px;
}
.post-card {
  background: #fff; border: 1px solid var(--gr-line); border-radius: var(--gr-radius);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  display: flex; flex-direction: column; overflow: hidden;
}
.post-card:hover { transform: translateY(-3px); box-shadow: var(--gr-shadow-hover); border-color: #d7dcee; }
.post-card[hidden] { display: none; }

.post-card__media {
  display: block; aspect-ratio: 16 / 9; background: linear-gradient(135deg, #e9edff 0%, #f6f8fd 100%);
  overflow: hidden;
}
.post-card__media img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  transition: transform .4s ease;
}
.post-card:hover .post-card__media img { transform: scale(1.03); }

.post-card__body {
  padding: 24px 26px 26px; display: flex; flex-direction: column; gap: 14px;
  flex: 1 1 auto;
}
.post-card__title {
  font-size: 22px; font-weight: 800; margin: 0;
  color: var(--gr-ink); line-height: 1.25; letter-spacing: -0.01em;
}
.post-card__title a { color: inherit; }
.post-card__title a:hover { color: var(--gr-brand); text-decoration: none; }

.post-card__byline { font-size: 14px; color: var(--gr-ink-soft); margin: 0; }
.post-card__byline strong { color: var(--gr-ink); font-weight: 700; }
.post-card__dot { margin: 0 6px; color: var(--gr-muted); }
.post-card__reading-time { color: var(--gr-muted); font-weight: 600; letter-spacing: 0.01em; }

.post-card__tags {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.post-card__tags li {
  background: var(--gr-pill); color: var(--gr-ink-soft);
  padding: 6px 14px; border-radius: 999px;
  font-size: 13px; font-weight: 500;
}

.post-card__desc {
  color: var(--gr-ink-soft); margin: 0; font-size: 15px; line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card__read {
  margin-top: auto; font-weight: 700; color: var(--gr-brand);
  font-size: 15px; align-self: flex-start;
}
.post-card__read:hover { color: var(--gr-brand-ink); text-decoration: none; }
.post-card__read span { transition: transform .2s ease; display: inline-block; margin-left: 4px; }
.post-card__read:hover span { transform: translateX(3px); }

/* Dark mode support for listing cards */
.dark .post-card {
  background: #102d47;
  border-color: #224767;
}
.dark .post-card:hover { border-color: #3a6285; }
.dark .post-card__media { background: linear-gradient(135deg, #16395c 0%, #102640 100%); }
.dark .post-card__title,
.dark .post-card__byline strong { color: #f3f6ff; }
.dark .post-card__byline,
.dark .post-card__dot,
.dark .post-card__reading-time,
.dark .post-card__desc { color: #c2cde0; }
.dark .post-card__tags li {
  background: #0b223b;
  color: #d5deed;
}

.btn--view-more {
  background: var(--gr-brand); color: #fff !important;
  padding: 12px 28px; border-radius: 999px; font-weight: 700;
}
.btn--view-more:hover { background: var(--gr-brand-ink); text-decoration: none; }

/* ----- post ----- */
.post { padding: 56px 0 80px; }
.breadcrumb ol {
  list-style: none; padding: 0; margin: 0 0 24px;
  display: flex; flex-wrap: wrap; gap: 6px;
  font-size: 14px; color: var(--gr-muted);
}
.breadcrumb li + li::before { content: "›"; margin-right: 6px; color: var(--gr-muted); }
.breadcrumb a { color: var(--gr-muted); }
.breadcrumb [aria-current="page"] { color: var(--gr-ink-soft); }

.post__header { margin-bottom: 40px; }
.post__eyebrow { color: var(--gr-muted); font-size: 14px; margin-bottom: 16px; }
.post__eyebrow a { color: var(--gr-brand); font-weight: 600; }
.post__title {
  font-size: clamp(30px, 3.6vw, 44px); line-height: 1.15;
  font-weight: 800; margin: 0 0 16px; letter-spacing: -0.02em;
}
.post__lede { font-size: 20px; color: var(--gr-ink-soft); margin: 0 0 28px; }

.post__byline { display: flex; align-items: center; gap: 12px; padding: 16px 0; border-top: 1px solid var(--gr-line); border-bottom: 1px solid var(--gr-line); }
.post__byline-photo { border-radius: 50%; }
.post__byline-name { font-weight: 600; }
.post__byline-meta { color: var(--gr-muted); font-size: 14px; }
.post__updated, .post__reviewed {
  margin-top: 12px; font-size: 14px; color: var(--gr-muted);
}

.post__toc {
  background: var(--gr-bg-soft); border: 1px solid var(--gr-line);
  border-radius: var(--gr-radius); padding: 20px 24px; margin: 0 0 40px;
}
.post__toc h2 { margin: 0 0 12px; font-size: 14px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--gr-muted); }
.post__toc ul { margin: 0; padding-left: 20px; }
.post__toc a { color: var(--gr-ink-soft); }

.prose h2 {
  font-size: 28px; font-weight: 700; margin: 48px 0 16px;
  letter-spacing: -0.01em; scroll-margin-top: 80px;
}
.prose h3 {
  font-size: 22px; font-weight: 700; margin: 32px 0 12px;
  scroll-margin-top: 80px;
}
.prose p { margin: 0 0 18px; }
.prose ul, .prose ol { margin: 0 0 18px; padding-left: 24px; }
.prose li { margin-bottom: 6px; }
.prose code {
  background: var(--gr-bg-soft); padding: 2px 6px; border-radius: 4px;
  font-size: 0.9em; font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.prose pre {
  background: #0b1730; color: #d9e6ff; padding: 20px;
  border-radius: var(--gr-radius); overflow-x: auto; font-size: 14px;
  line-height: 1.55;
}
.prose pre code { background: transparent; padding: 0; color: inherit; }
.prose blockquote {
  border-left: 4px solid var(--gr-brand); padding: 6px 18px;
  margin: 24px 0; color: var(--gr-ink-soft); background: var(--gr-bg-soft);
  border-radius: 0 var(--gr-radius) var(--gr-radius) 0;
}
.prose table {
  width: 100%; border-collapse: collapse; margin: 24px 0;
  font-size: 15px;
}
.prose th, .prose td {
  border: 1px solid var(--gr-line); padding: 10px 14px; text-align: left;
}
.prose th { background: var(--gr-bg-soft); font-weight: 600; }

/* Body links — keep them obviously clickable for readers and bots */
.prose a {
  color: var(--gr-brand);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
.prose a:hover {
  color: var(--gr-brand-ink);
  text-decoration-thickness: 2px;
}
.prose a:visited { color: var(--gr-brand-ink); }

.post__faq { margin-top: 56px; }
.post__faq h2 { font-size: 24px; margin-bottom: 20px; }
.post__faq dt { font-weight: 600; margin-top: 16px; }
.post__faq dd { margin: 6px 0 12px; color: var(--gr-ink-soft); }

.post__author-card {
  display: flex; gap: 20px; align-items: flex-start;
  padding: 28px; background: var(--gr-bg-soft); border-radius: var(--gr-radius);
  margin-top: 56px;
}
.post__author-card img { border-radius: 50%; }
.post__author-card h3 { margin: 0 0 8px; font-size: 18px; }
.post__author-card p { margin: 0 0 8px; color: var(--gr-ink-soft); font-size: 15px; }

.post__related { margin-top: 56px; }
.post__related h2 { font-size: 22px; margin-bottom: 20px; }
.post__related ul { list-style: none; padding: 0; display: grid; gap: 12px; }
.post__related a {
  display: block; padding: 16px 20px; background: #fff;
  border: 1px solid var(--gr-line); border-radius: var(--gr-radius);
  color: inherit;
}
.post__related a:hover { border-color: var(--gr-brand); text-decoration: none; }
.post__related-title { display: block; font-weight: 600; margin-bottom: 4px; }
.post__related-desc { display: block; font-size: 14px; color: var(--gr-muted); }

.post__cta {
  margin-top: 64px; padding: 40px; border-radius: var(--gr-radius);
  background: linear-gradient(135deg, #0B5ED7 0%, #0a4bb0 100%); color: #fff;
}
.post__cta h2 { margin: 0 0 10px; font-size: 24px; color: #fff; }
.post__cta p { margin: 0 0 18px; color: rgba(255,255,255,0.9); }

.btn {
  display: inline-block; padding: 10px 20px; border-radius: 8px;
  font-weight: 600; font-size: 15px; margin-right: 8px;
  border: 1px solid transparent; cursor: pointer;
}
.btn--primary { background: #fff; color: var(--gr-brand) !important; }
.btn--primary:hover { background: #f0f6ff; text-decoration: none; }
.btn--ghost { color: #fff !important; border-color: rgba(255,255,255,0.5); }
.btn--ghost:hover { background: rgba(255,255,255,0.1); text-decoration: none; }

.pagination {
  display: flex; justify-content: space-between; align-items: center;
  margin: 40px 0; padding: 20px 0; border-top: 1px solid var(--gr-line);
  color: var(--gr-muted); font-size: 15px;
}

/* ----- author page ----- */
.author-card { display: flex; gap: 28px; align-items: flex-start; padding: 8px 0 40px; }
.author-card__photo { border-radius: 50%; }
.author-card__name { font-size: 32px; margin: 0 0 6px; font-weight: 800; }
.author-card__role { color: var(--gr-brand); font-weight: 600; margin: 0 0 16px; }
.author-card__bio { color: var(--gr-ink-soft); margin: 0 0 16px; max-width: 640px; }
.author-card__tags { margin: 0 0 12px; }
.author-card__links { display: flex; flex-wrap: wrap; gap: 12px; font-size: 14px; }

@media (max-width: 640px) {
  .author-card { flex-direction: column; gap: 16px; }
  .post__author-card { flex-direction: column; }
}

/* ----- footer ----- */
.site-footer {
  background: #0B1730; color: #c5cbdd; padding: 56px 0 32px;
  margin-top: 80px;
}
.site-footer__grid {
  display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 32px;
  margin-bottom: 32px;
}
.site-footer h4 { color: #fff; font-size: 14px; font-weight: 700; margin: 0 0 16px; text-transform: uppercase; letter-spacing: 0.06em; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 8px; font-size: 14px; }
.site-footer a { color: #c5cbdd; }
.site-footer a:hover { color: #fff; }
.site-footer__tag { font-size: 13px; color: #8790a6; max-width: 280px; margin: 12px 0 0; }
.site-footer__copy { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 20px; font-size: 13px; color: #8790a6; }

@media (max-width: 720px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
}