/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --red:      #cc0000;
  --red-dark: #a80000;
  --red-light:#fff0f0;
  --black:    #111111;
  --dark:     #1a1a1a;
  --gray:     #555555;
  --light:    #f5f5f5;
  --white:    #ffffff;
  --border:   #e0e0e0;
  --card-shadow: 0 4px 24px rgba(0,0,0,0.09);
  --card-hover:  0 10px 36px rgba(204,0,0,0.13);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Raleway', sans-serif;
  background: var(--white);
  color: var(--black);
  min-height: 100vh;
}

/* ════════════════════════════
   TOP NAVBAR
   ════════════════════════════ */
.top-nav {
  background: var(--red);
  position: sticky;
  top: 0;
  z-index: 300;
  box-shadow: 0 2px 12px rgba(0,0,0,0.18);
}
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  font-family: 'Montserrat', sans-serif;
  font-size: 22px;
  font-weight: 800;
  color: var(--white);
  text-decoration: none;
  letter-spacing: -.01em;
  white-space: nowrap;
}
.brand span { color: var(--black); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}
.nav-links a {
  display: block;
  padding: 8px 14px;
  color: var(--white);
  font-size: 13.5px;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: .03em;
  border-radius: 4px;
  transition: background .18s, color .18s;
}
.nav-links a:hover,
.nav-links a.active {
  background: rgba(255,255,255,0.18);
}

/* ════════════════════════════
   PAGE HEADER
   ════════════════════════════ */
.page-header {
  text-align: center;
  padding: 56px 20px 40px;
  background: var(--white);
}
.page-header h1 {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  color: var(--black);
  letter-spacing: -.02em;
}
.page-header .sub {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--red);
  letter-spacing: .08em;
  text-transform: lowercase;
}
.page-header .sub::before,
.page-header .sub::after {
  content: '';
  display: block;
  width: 48px;
  height: 2px;
  background: var(--black);
}

/* ════════════════════════════
   SECTION ANCHORS & LAYOUT
   ════════════════════════════ */
.cert-section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px 64px;
  scroll-margin-top: 80px; /* offset sticky nav */
}

/* Section title bar */
.section-heading {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 3px solid var(--red);
}
.section-heading .icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--red);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.section-heading .icon-wrap svg {
  width: 22px;
  height: 22px;
  stroke: #fff;
}
.section-heading h2 {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(18px, 2.5vw, 26px);
  font-weight: 800;
  color: var(--black);
  letter-spacing: -.01em;
}
.section-heading .count-badge {
  margin-left: auto;
  background: var(--red);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: .04em;
}

/* ════════════════════════════
   SEARCH & FILTER BAR
   ════════════════════════════ */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.search-wrap { position: relative; }
.search-wrap svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 15px;
  height: 15px;
  color: #999;
  pointer-events: none;
}
.search-input {
  border: 2px solid var(--border);
  border-radius: 8px;
  padding: 9px 14px 9px 36px;
  font-family: inherit;
  font-size: 13.5px;
  color: var(--black);
  width: 220px;
  outline: none;
  transition: border-color .2s;
}
.search-input::placeholder { color: #aaa; }
.search-input:focus { border-color: var(--red); }

.filter-btn {
  padding: 8px 18px;
  border-radius: 6px;
  border: 2px solid var(--border);
  background: var(--white);
  color: var(--gray);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all .18s;
}
.filter-btn:hover { border-color: var(--red); color: var(--red); }
.filter-btn.active {
  background: var(--red);
  border-color: var(--red);
  color: #fff;
}

/* ════════════════════════════
   CARD GRID
   ════════════════════════════ */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 22px;
}

/* ── CARD ── */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--card-shadow);
  transition: transform .22s, box-shadow .22s, border-color .22s;
  animation: fadeUp .4s ease both;
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-hover);
  border-color: var(--red);
}
.card.hidden { display: none; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}
.card:nth-child(1)  { animation-delay: .04s; }
.card:nth-child(2)  { animation-delay: .09s; }
.card:nth-child(3)  { animation-delay: .14s; }
.card:nth-child(4)  { animation-delay: .19s; }
.card:nth-child(5)  { animation-delay: .24s; }
.card:nth-child(6)  { animation-delay: .29s; }
.card:nth-child(7)  { animation-delay: .34s; }
.card:nth-child(8)  { animation-delay: .39s; }
.card:nth-child(9)  { animation-delay: .44s; }
.card:nth-child(10) { animation-delay: .49s; }
.card:nth-child(11) { animation-delay: .54s; }
.card:nth-child(12) { animation-delay: .59s; }

/* card image / placeholder */
.card-img-wrap {
  position: relative;
  height: 245px;
  background: linear-gradient(135deg, #fff 0%, #f7f7f7 100%);
  padding: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}


/* Certificate photo */
.cert-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  transition: transform .3s ease, filter .3s ease;
}

.card:hover .cert-img {
  transform: scale(1.02);
  filter: brightness(.98);
}

/* Optional fallback placeholder if any image is missing */
.placeholder-cert {
  width: 120px;
  height: 84px;
  background: #fff;
  border-radius: 6px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,.08);
}
.placeholder-cert svg { width: 30px; height: 30px; opacity: .25; stroke: var(--red); }

/* red accent strip at top of card */
.card::before {
  content: '';
  display: block;
  height: 4px;
  background: var(--red);
  width: 0;
  transition: width .3s ease;
}
.card:hover::before { width: 100%; }

.provider-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 36px;
  height: 36px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  box-shadow: 0 2px 8px rgba(0,0,0,.1);
}

/* card body */
.card-body {
  padding: 16px 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  flex: 1;
}
.card-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--black);
  line-height: 1.4;
}
.card-meta {
  font-size: 12px;
  color: #888;
  margin-top: 2px;
}
.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 14px;
  flex-wrap: wrap;
  gap: 8px;
}

/* tags */
.tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  letter-spacing: .02em;
}
.tag.red   { background: #ffeaea; color: var(--red); border: 1px solid #f5c0c0; }
.tag.dark  { background: #f0f0f0; color: var(--dark); border: 1px solid #ddd; }
.tag.green { background: #eafaf0; color: #1a7a3c; border: 1px solid #b2e0c5; }

/* buttons */
.btn {
  padding: 8px 18px;
  border-radius: 6px;
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: all .18s;
  white-space: nowrap;
  border: 2px solid transparent;
}
.btn-red {
  background: var(--red);
  color: #fff;
  border-color: var(--red);
}
.btn-red:hover { background: var(--red-dark); border-color: var(--red-dark); }
.btn-outline {
  background: transparent;
  color: var(--red);
  border-color: var(--red);
}
.btn-outline:hover { background: var(--red); color: #fff; }
.btn-disabled {
  background: transparent;
  color: #bbb;
  border-color: #ddd;
  cursor: default;
  pointer-events: none;
}

/* ── EMPTY STATE ── */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 50px 20px;
  color: #aaa;
  font-size: 14px;
}
.empty-state svg { width: 36px; height: 36px; margin-bottom: 10px; opacity: .3; }

/* ── DIVIDER between sections ── */
.section-divider {
  max-width: 1280px;
  margin: 0 auto 0;
  padding: 0 40px;
}
.section-divider hr {
  border: none;
  border-top: 2px dashed var(--border);
}

/* ════════════════════════════
   SCROLL TO TOP BUTTON
   ════════════════════════════ */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--red);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(204,0,0,0.35);
  transition: opacity .2s, transform .2s;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
}
.scroll-top.visible { opacity: 1; pointer-events: auto; }
.scroll-top:hover { transform: scale(1.1); }
.scroll-top svg { width: 20px; height: 20px; }

/* ════════════════════════════
   FOOTER
   ════════════════════════════ */
footer {
  background: var(--black);
  color: #aaa;
  text-align: center;
  padding: 24px 20px;
  font-size: 13px;
}
footer a { color: var(--red); text-decoration: none; }

/* ════════════════════════════
   RESPONSIVE
   ════════════════════════════ */
@media (max-width: 768px) {
  .card-img-wrap { height: 220px; }
  .nav-inner { padding: 0 16px; }
  .cert-section { padding: 0 16px 48px; }
  .section-divider { padding: 0 16px; }
  .filter-bar { flex-direction: column; align-items: flex-start; }
  .search-input { width: 100%; }
  .nav-links { gap: 0; }
  .nav-links a { padding: 8px 8px; font-size: 12px; }
  .brand { font-size: 17px; }
}
@media (max-width: 520px) {
  .card-img-wrap { height: 190px; }
  .nav-links a span { display: none; }
}

/* ════════════════════════════
   HIGHLIGHTED CERTIFICATE CATEGORY BAR
   ════════════════════════════ */
.category-panel {
  max-width: 1280px;
  margin: 0 auto 34px;
  padding: 0 40px;
}

.category-panel-inner {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  padding: 22px;
  border: 2px solid rgba(204, 0, 0, .22);
  border-radius: 20px;
  background:
    radial-gradient(circle at top left, rgba(204, 0, 0, .14), transparent 32%),
    linear-gradient(135deg, #ffffff 0%, #fff4f4 55%, #ffffff 100%);
  box-shadow: 0 14px 38px rgba(204, 0, 0, .12);
  position: relative;
  overflow: hidden;
}

.category-panel-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--red), var(--black), var(--red));
}

.category-search {
  flex: 1 1 260px;
  max-width: 360px;
}

.category-search .search-input {
  width: 100%;
  height: 48px;
  border-radius: 14px;
  border-color: rgba(204, 0, 0, .28);
  background: #fff;
  box-shadow: 0 8px 22px rgba(0, 0, 0, .06);
  font-size: 14px;
  font-weight: 600;
}

.category-divider {
  width: 1px;
  height: 42px;
  background: rgba(204, 0, 0, .22);
}

.category-label {
  font-family: 'Montserrat', sans-serif;
  font-size: 15px;
  font-weight: 900;
  color: var(--black);
  text-transform: uppercase;
  letter-spacing: .08em;
  white-space: nowrap;
}

.category-buttons {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.category-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 50px;
  padding: 13px 22px;
  border-radius: 999px;
  background: var(--red);
  color: #fff;
  border: 2px solid var(--red);
  font-family: 'Montserrat', sans-serif;
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
  box-shadow: 0 10px 22px rgba(204, 0, 0, .24);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.category-btn:hover {
  transform: translateY(-3px);
  background: var(--black);
  border-color: var(--black);
  box-shadow: 0 14px 30px rgba(17, 17, 17, .20);
}

.category-btn span {
  white-space: nowrap;
}

/* Full certificate view inside card */
.card-img-wrap {
  min-height: 245px;
}

.cert-img {
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, .08);
}

@media (max-width: 768px) {
  .category-panel {
    padding: 0 16px;
  }

  .category-panel-inner {
    padding: 18px;
    gap: 14px;
  }

  .category-divider {
    display: none;
  }

  .category-buttons,
  .category-btn {
    width: 100%;
  }
}

@media (max-width: 520px) {
  .category-label {
    font-size: 13px;
  }

  .category-btn {
    min-height: 48px;
    font-size: 13px;
  }
}