:root {
  --bg: #0c0f14;
  --surface: #131824;
  --surface-strong: #192133;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e7edf7;
  --muted: #9aa6bf;
  --accent: #2f6bff;
  --accent-strong: #3b7dff;
  --chip: #1d2435;
  --chip-active: #2a3d7d;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", "Montserrat", "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #171c2b 0%, #0b0e14 55%, #080a0f 100%);
  color: var(--text);
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.top-bar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(12, 15, 20, 0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header {
  padding: 36px 0 18px;
}

.brand {
  display: flex;
  gap: 20px;
  align-items: center;
}

.brand-mark {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #233055, #1a2238);
  border: 1px solid var(--border);
  font-weight: 700;
  font-size: 24px;
  overflow: hidden;
}

.brand-logo {
  width: 56px !important;
  height: 56px !important;
  min-width: 56px !important;
  min-height: 56px !important;
  max-width: 56px !important;
  max-height: 56px !important;
  overflow: hidden;
  border-radius: 14px;
}

.brand-logo img,
.brand-logo-image {
  width: 100% !important;
  height: 100% !important;
  object-fit: contain !important;
  display: block !important;
}

.brand-eyebrow {
  margin: 0 0 6px;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 12px;
  color: var(--muted);
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(28px, 3vw, 42px);
}

.brand-subtitle {
  margin: 0;
  color: var(--muted);
}

.filters {
  padding: 0 0 18px;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.chip {
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--chip);
  color: var(--text);
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, border 0.2s ease;
}

.chip[aria-pressed="true"] {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  border-color: rgba(130, 177, 255, 0.9);
  box-shadow: 0 0 0 1px rgba(130, 177, 255, 0.35),
    0 10px 22px rgba(47, 107, 255, 0.3);
  color: #f2f6ff;
}

.chip:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.grid {
  display: grid;
  row-gap: 32px;
  column-gap: 24px;
  grid-template-columns: 1fr;
  padding-bottom: 60px;
}

@media (min-width: 640px) {
  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.hero-grid {
  grid-template-columns: 1fr;
  align-items: center;
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

@media (max-width: 899px) {
  .hero-media {
    max-width: 100%;
  }
}

.hero-media {
  aspect-ratio: 16 / 10;
  width: 100%;
  height: 100%;
  overflow: hidden;
  display: flex;
  max-width: 560px;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-copy {
  display: grid;
  gap: 12px;
}

.info-card {
  perspective: 1200px;
}

.info-card-inner {
  position: relative;
  min-height: 220px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(27, 34, 53, 0.95), rgba(16, 21, 33, 0.95));
  box-shadow: var(--shadow);
  transition: transform 0.45s ease;
  transform-style: preserve-3d;
}

.info-card-inner.is-flipped {
  transform: rotateY(180deg);
}

.info-card-face {
  position: absolute;
  inset: 0;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  -webkit-backface-visibility: hidden;
  /* Safari compatibility */
  backface-visibility: hidden;
  border-radius: var(--radius);
  overflow: hidden;
  height: 100%;
}

.info-card-front {
  height: 100%;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.info-card-back {
  transform: rotateY(180deg);
  cursor: pointer;
}

.info-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  background: transparent;
  border: 0;
  padding: 0;
}

.info-card-title {
  margin: 0;
  font-size: clamp(22px, 2vw, 30px);
  line-height: 1.15;
  max-width: calc(100% - 120px);
}

.info-card-front .info-card-button {
  padding: 6px 12px;
  font-size: 12px;
  position: absolute;
  right: 18px !important;
  bottom: 18px !important;
  top: auto !important;
  left: auto !important;
  margin: 0 !important;
  z-index: 10;
  pointer-events: none;
}

.info-card-front,
.info-card-back,
.info-card-button {
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.info-card-inner.is-flipped .info-card-button {
  opacity: 0;
  pointer-events: none;
}

.card {
  perspective: 1200px;
}

.card-inner {
  position: relative;
  min-height: 260px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(27, 34, 53, 0.95), rgba(16, 21, 33, 0.95));
  box-shadow: var(--shadow);
  transition: transform 0.6s ease;
  transform-style: preserve-3d;
}

.static-card {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: hidden;
}

.static-card h3 {
  margin: 0;
}

.steps-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  display: grid;
  gap: 10px;
  line-height: 1.5;
}

.steps-list strong {
  color: var(--text);
}

.example-card {
  min-height: 220px;
}

.example-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.pdf-card {
  margin-top: 18px;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.download-actions {
  margin-top: 20px;
  display: flex;
  justify-content: center;
}

@media (max-width: 720px) {
  .download-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.pdf-details {
  margin-top: 8px;
}

.pdf-details summary {
  cursor: pointer;
  color: var(--text);
  font-weight: 600;
}

.pdf-frame {
  margin-top: 12px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.pdf-frame iframe {
  width: 100%;
  height: 360px;
  border: 0;
  display: block;
}

.card-inner.is-flipped {
  transform: rotateY(180deg);
}

.card-face {
  position: absolute;
  inset: 0;
  padding: 18px 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  backface-visibility: hidden;
  border-radius: var(--radius);
  overflow: hidden;
}

.card-face.front {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.card-face.front:hover,
.card:focus-visible .card-face.front {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.18);
}

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .card-face.front {
    background: rgba(25, 33, 51, 0.95);
  }
}

.card-face.back {
  transform: rotateY(180deg);
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-image {
  width: 100%;
  height: 128px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.hero-media .card-image {
  height: 100%;
  border-radius: 14px;
}

.badge {
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  background: rgba(47, 107, 255, 0.15);
  border: 1px solid rgba(47, 107, 255, 0.5);
  color: #cdd9ff;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.card-title {
  margin: 0;
  font-size: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.card-description {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  font-size: 12px;
  color: var(--text);
}

.button {
  margin-top: auto;
  align-self: flex-start;
  padding: 10px 18px;
  border-radius: 10px;
  border: none;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: white;
  cursor: pointer;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(47, 107, 255, 0.35);
}

.button:focus-visible {
  outline: 2px solid #d8e2ff;
  outline-offset: 2px;
}

.empty-state {
  color: var(--muted);
  text-align: center;
}

@media (prefers-reduced-motion: reduce) {

  .chip,
  .button,
  .card-inner,
  .info-card-inner {
    transition: none;
  }

  .card-inner {
    transform: none !important;
  }

  .info-card-inner {
    transform: none !important;
  }

  .card-face {
    position: relative;
    inset: auto;
    backface-visibility: visible;
  }

  .card-face.back {
    display: none;
  }

  .card-inner.is-flipped .card-face.back {
    display: flex;
  }

  .card-inner.is-flipped .card-face.front {
    display: none;
  }
}

/* Hide button on mobile - use both hover and width detection */
@media (hover: none),
(max-width: 768px) {
  .info-card-front .info-card-button {
    display: none !important;
  }

  .info-card {
    cursor: pointer;
    /* Indicate card is tappable */
  }
}