/* ==========================================================================
   M2 Resource Vault — plugin stylesheet
   Same design tokens as the learn.m2learninghub.com homepage mockup
   (navy #16225c + gold #c9940a + amber gradient), so WordPress pages
   built with these shortcodes/templates match it exactly.
   ========================================================================== */

.m2rv-wrap, .m2rv-shelf-grid, .m2rv-board-grid, .m2rv-subject-grid, .m2rv-treasure-grid,
.m2rv-grid, .m2rv-card, .m2rv-single, .m2rv-buybox, .m2rv-filters, .m2rv-breadcrumbs,
.m2rv-search-bar, .m2rv-empty-state {
  --m2-navy:   #16225c;
  --m2-gold:   #c9940a;
  --m2-amber:  #d2750a;
  --m2-amber2: #8b4513;
  --m2-green:  #2d6a3f;
  --m2-ink:    #1a1408;
  --m2-ink2:   rgba(26,20,8,0.62);
  --m2-bg2:    #f3ede0;
  --m2-border: rgba(22,34,92,0.11);
  --m2-r:      16px;
  --m2-grad-amber: linear-gradient(135deg,#d2750a,#8b4513);
  --m2-grad-navy:  linear-gradient(135deg,#16225c,#2c3f8f);
  --m2-grad-gold:  linear-gradient(135deg,#e8b13a,#c9940a);
  font-family: 'Nunito', sans-serif;
  color: var(--m2-ink);
  box-sizing: border-box;
}
.m2rv-wrap *, .m2rv-wrap *::before, .m2rv-wrap *::after { box-sizing: inherit; }
.m2rv-wrap { max-width: 1180px; margin: 0 auto; padding: 40px 24px 80px; }
.m2rv-wrap h1, .m2rv-wrap h2, .m2rv-wrap h3, .m2rv-wrap h4 { font-family: 'Poppins', sans-serif; color: var(--m2-navy); }

/* ---- Breadcrumbs ---- */
.m2rv-breadcrumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; padding: 0; margin: 0 0 22px; font-size: 13px; }
.m2rv-breadcrumbs a { color: var(--m2-ink2); text-decoration: none; }
.m2rv-breadcrumbs a:hover { color: var(--m2-amber); }
.m2rv-breadcrumbs span[aria-current] { color: var(--m2-navy); font-weight: 700; }
.m2rv-breadcrumbs__sep { margin-left: 6px; color: var(--m2-ink2); }
.m2rv-breadcrumbs li { display: flex; align-items: center; }

/* ---- Archive header ---- */
.m2rv-archive-header h1 { font-size: clamp(24px,3vw,34px); font-weight: 800; margin-bottom: 8px; }
.m2rv-archive-header p { color: var(--m2-ink2); font-size: 14.5px; max-width: 640px; }

/* ---- Class sub-nav pills (class taxonomy pages) ---- */
.m2rv-subnav { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 14px 0; }
.m2rv-subnav__label { font-weight: 700; font-size: 13px; color: var(--m2-ink2); margin-right: 4px; }
.m2rv-subnav__pill { font-size: 12.5px; font-weight: 700; color: var(--m2-navy); background: rgba(22,34,92,0.06); padding: 6px 13px; border-radius: 100px; text-decoration: none; }
.m2rv-subnav__pill:hover { background: var(--m2-navy); color: #fff; }

/* ---- Archive layout ---- */
.m2rv-archive-layout { display: grid; grid-template-columns: 240px 1fr; gap: 28px; margin-top: 24px; align-items: start; }
.m2rv-archive-sidebar { position: sticky; top: 20px; }

/* ---- Filters ---- */
.m2rv-filters__mobile-toggle { display: none; align-items: center; gap: 8px; width: 100%; padding: 12px 16px; border: 1px solid var(--m2-border); border-radius: 100px; background: #fff; font-weight: 700; font-size: 14px; color: var(--m2-navy); margin-bottom: 12px; }
.m2rv-filters__form { display: flex; flex-direction: column; gap: 14px; background: #fff; border: 1px solid var(--m2-border); border-radius: var(--m2-r); padding: 20px; }
.m2rv-filter-field label { display: block; font-size: 12px; font-weight: 700; color: var(--m2-ink2); margin-bottom: 5px; text-transform: uppercase; letter-spacing: 0.03em; }
.m2rv-filter-field select { width: 100%; padding: 9px 10px; border-radius: 8px; border: 1px solid var(--m2-border); font-family: inherit; font-size: 13.5px; background: #fff; }
.m2rv-filters__clear { text-align: center; font-size: 12.5px; color: var(--m2-ink2); text-decoration: underline; }

/* ---- Resource grid + card ---- */
.m2rv-grid, .m2rv-shelf-grid, .m2rv-board-grid, .m2rv-subject-grid, .m2rv-treasure-grid { display: grid; gap: 18px; }
.m2rv-grid { grid-template-columns: repeat(3, 1fr); }
.m2rv-shelf-grid { grid-template-columns: repeat(3, 1fr); }
.m2rv-board-grid { grid-template-columns: repeat(4, 1fr); }
.m2rv-subject-grid { grid-template-columns: repeat(5, 1fr); }
.m2rv-treasure-grid { grid-template-columns: repeat(4, 1fr); }

.m2rv-card { background: #fff; border: 1px solid var(--m2-border); border-radius: var(--m2-r); overflow: hidden; transition: transform 0.3s ease, box-shadow 0.3s ease; text-decoration: none; }
.m2rv-card:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(22,34,92,0.12); }
.m2rv-card__thumb-link { display: block; }
.m2rv-card__thumb { height: 130px; background: var(--m2-grad-navy); position: relative; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.m2rv-card__thumb img { width: 100%; height: 100%; object-fit: cover; }
.m2rv-card__thumb-fallback { color: rgba(255,255,255,0.8); }
.m2rv-badge { position: absolute; top: 10px; font-family: 'Poppins', sans-serif; font-size: 10.5px; font-weight: 800; padding: 5px 11px; border-radius: 100px; letter-spacing: 0.02em; }
.m2rv-badge--free { left: 10px; background: #e8f5ec; color: var(--m2-green); }
.m2rv-badge--premium { left: 10px; background: var(--m2-grad-gold); color: var(--m2-navy); }
.m2rv-badge--tag { right: 10px; background: rgba(255,255,255,0.9); color: var(--m2-navy); }
.m2rv-card__body { padding: 16px 16px 18px; }
.m2rv-card__meta { font-size: 11px; font-weight: 700; color: var(--m2-amber); text-transform: uppercase; letter-spacing: 0.02em; margin-bottom: 6px; }
.m2rv-card__title { font-size: 15px; font-weight: 800; line-height: 1.35; margin: 0 0 8px; }
.m2rv-card__title a { color: var(--m2-navy); text-decoration: none; }
.m2rv-card__desc { font-size: 13px; color: var(--m2-ink2); margin: 0 0 10px; }
.m2rv-card__specs { display: flex; gap: 10px; font-size: 11.5px; color: var(--m2-ink2); margin-bottom: 12px; }
.m2rv-card__foot { display: flex; align-items: center; justify-content: space-between; }
.m2rv-card__price { font-family: 'Poppins', sans-serif; font-weight: 800; font-size: 14px; color: var(--m2-navy); }
.m2rv-card__price--free { color: var(--m2-green); }

/* ---- Buttons ---- */
.m2rv-btn { display: inline-flex; align-items: center; justify-content: center; padding: 9px 16px; border-radius: 100px; font-family: 'Poppins', sans-serif; font-weight: 700; font-size: 12.5px; text-decoration: none; border: none; cursor: pointer; }
.m2rv-btn--free { background: var(--m2-green); color: #fff; }
.m2rv-btn--premium { background: var(--m2-navy); color: #fff; }
.m2rv-btn--ghost { background: #fff; color: var(--m2-navy); border: 1.5px solid var(--m2-border); }
.m2rv-btn--block { width: 100%; padding: 13px 16px; font-size: 14px; }

/* ---- Shelf / board / subject / treasure cards (shortcodes) ---- */
.m2rv-shelf-card { display: block; background: #fff; border: 1px solid var(--m2-border); border-radius: var(--m2-r); padding: 22px; text-decoration: none; position: relative; overflow: hidden; }
.m2rv-shelf-card::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 5px; background: var(--m2-grad-amber); }
.m2rv-shelf-card h4 { font-size: 18px; font-weight: 800; margin: 0 0 6px; }
.m2rv-shelf-card__count { display: block; font-size: 12px; color: var(--m2-ink2); margin-bottom: 14px; }
.m2rv-shelf-card__go { font-family: 'Poppins', sans-serif; font-weight: 700; font-size: 13px; color: var(--m2-amber); }
.m2rv-shelf-card--exam { background: var(--m2-grad-navy); }
.m2rv-shelf-card--exam::before { background: var(--m2-grad-gold); }
.m2rv-shelf-card--exam h4, .m2rv-shelf-card--exam .m2rv-shelf-card__count { color: #fff; }
.m2rv-shelf-card--exam .m2rv-shelf-card__go { color: #f0cf7d; }

.m2rv-board-card, .m2rv-subject-card { display: block; background: #fff; border: 1px solid var(--m2-border); border-radius: var(--m2-r); padding: 22px; text-align: center; text-decoration: none; }
.m2rv-board-card h4, .m2rv-subject-card h4 { font-size: 16px; font-weight: 800; margin: 0 0 4px; }
.m2rv-board-card p { font-size: 12px; color: var(--m2-ink2); margin: 0; }

.m2rv-treasure-tile { display: block; background: var(--m2-navy); border-radius: 14px; padding: 18px; text-decoration: none; }
.m2rv-treasure-tile h4 { color: #fff; font-size: 14px; font-weight: 700; margin: 0; }

/* ---- Single resource page ---- */
.m2rv-single-layout { display: grid; grid-template-columns: 1fr 300px; gap: 36px; align-items: start; margin-top: 10px; }
.m2rv-single-meta-tags { display: flex; gap: 8px; margin-bottom: 14px; }
.m2rv-tag { font-size: 11px; font-weight: 700; color: var(--m2-navy); background: rgba(22,34,92,0.06); padding: 5px 11px; border-radius: 100px; }
.m2rv-single h1 { font-size: clamp(24px,3vw,32px); margin-bottom: 12px; }
.m2rv-single-lead { font-size: 15.5px; color: var(--m2-ink2); margin-bottom: 20px; }
.m2rv-single-thumb img { width: 100%; border-radius: var(--m2-r); margin-bottom: 24px; }
.m2rv-single-content { font-size: 15px; line-height: 1.75; margin-bottom: 24px; }
.m2rv-whats-included { background: var(--m2-bg2); border-radius: var(--m2-r); padding: 22px; margin-bottom: 24px; }
.m2rv-whats-included h3 { font-size: 16px; margin-bottom: 12px; }
.m2rv-whats-included ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; font-size: 14px; }
.m2rv-preview-box { margin-bottom: 24px; }
.m2rv-preview-box h3 { font-size: 16px; margin-bottom: 10px; }

.m2rv-buybox { position: sticky; top: 20px; background: #fff; border: 1px solid var(--m2-border); border-radius: var(--m2-r); padding: 24px; box-shadow: 0 10px 30px rgba(22,34,92,0.08); }
.m2rv-buybox__specs { display: grid; gap: 8px; font-size: 13px; color: var(--m2-ink2); margin-bottom: 18px; padding-bottom: 18px; border-bottom: 1px solid var(--m2-border); }
.m2rv-buybox__price { font-family: 'Poppins', sans-serif; font-weight: 900; font-size: 24px; color: var(--m2-navy); margin-bottom: 14px; }
.m2rv-buybox__price--free { color: var(--m2-green); }

/* ---- Related resources ---- */
.m2rv-related { margin-top: 60px; }
.m2rv-related h2 { font-size: 22px; margin-bottom: 20px; }

/* ---- Empty state ---- */
.m2rv-empty-state { text-align: center; padding: 60px 20px; color: var(--m2-ink2); }
.m2rv-empty-state svg { color: var(--m2-ink2); margin-bottom: 14px; }
.m2rv-empty-state h3 { color: var(--m2-navy); margin-bottom: 6px; }
.m2rv-empty-state p { margin-bottom: 18px; }

/* ---- Pagination ---- */
.m2rv-pagination { display: flex; justify-content: center; gap: 8px; margin-top: 36px; }
.m2rv-pagination .page-numbers { padding: 8px 14px; border-radius: 8px; border: 1px solid var(--m2-border); text-decoration: none; color: var(--m2-navy); font-size: 13.5px; font-weight: 700; }
.m2rv-pagination .page-numbers.current { background: var(--m2-navy); color: #fff; border-color: var(--m2-navy); }

/* ---- Search bar (shortcode) ---- */
.m2rv-search-bar { display: flex; align-items: center; gap: 10px; background: #fff; border: 1.5px solid var(--m2-border); border-radius: 100px; padding: 8px 8px 8px 20px; max-width: 520px; }
.m2rv-search-bar svg { color: rgba(26,20,8,0.4); flex-shrink: 0; }
.m2rv-search-bar input[type="search"] { flex: 1; border: none; outline: none; font-size: 14px; background: transparent; }
.m2rv-search-bar button { background: var(--m2-grad-amber); color: #fff; padding: 10px 20px; border-radius: 100px; font-family: 'Poppins', sans-serif; font-weight: 700; font-size: 13px; border: none; }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
  .m2rv-grid { grid-template-columns: repeat(2, 1fr); }
  .m2rv-shelf-grid { grid-template-columns: repeat(2, 1fr); }
  .m2rv-board-grid, .m2rv-treasure-grid { grid-template-columns: repeat(3, 1fr); }
  .m2rv-subject-grid { grid-template-columns: repeat(3, 1fr); }
  .m2rv-archive-layout { grid-template-columns: 1fr; }
  .m2rv-archive-sidebar { position: static; }
  .m2rv-single-layout { grid-template-columns: 1fr; }
  .m2rv-buybox { position: static; }
}
@media (max-width: 640px) {
  .m2rv-wrap { padding: 24px 16px 60px; }
  .m2rv-grid, .m2rv-shelf-grid { grid-template-columns: 1fr; }
  .m2rv-board-grid, .m2rv-subject-grid, .m2rv-treasure-grid { grid-template-columns: 1fr 1fr; }
  .m2rv-filters__mobile-toggle { display: flex; }
  .m2rv-filters__form { display: none; }
  .m2rv-filters__form.m2rv-open { display: flex; }
}