/* ============================================
   Blueprint Visual Motif
   Grid backgrounds, corner markers, dimension lines
   Core to FRABO's architectural identity
   ============================================ */

/* === Blueprint Grid Background (Light) === */
.bp-grid {
  background-image:
    repeating-linear-gradient(0deg, var(--bp-grid) 0px, var(--bp-grid) 1px, transparent 1px, transparent 40px),
    repeating-linear-gradient(90deg, var(--bp-grid) 0px, var(--bp-grid) 1px, transparent 1px, transparent 40px),
    repeating-linear-gradient(0deg, var(--bp-grid-major) 0px, var(--bp-grid-major) 1px, transparent 1px, transparent 200px),
    repeating-linear-gradient(90deg, var(--bp-grid-major) 0px, var(--bp-grid-major) 1px, transparent 1px, transparent 200px);
}

/* === Blueprint Grid Background (Dark/Navy) === */
.bp-grid--dark {
  background-image:
    repeating-linear-gradient(0deg, var(--bp-grid-dark) 0px, var(--bp-grid-dark) 1px, transparent 1px, transparent 40px),
    repeating-linear-gradient(90deg, var(--bp-grid-dark) 0px, var(--bp-grid-dark) 1px, transparent 1px, transparent 40px),
    repeating-linear-gradient(0deg, var(--bp-grid-major-dark) 0px, var(--bp-grid-major-dark) 1px, transparent 1px, transparent 200px),
    repeating-linear-gradient(90deg, var(--bp-grid-major-dark) 0px, var(--bp-grid-major-dark) 1px, transparent 1px, transparent 200px);
}

/* === Corner Markers (Blueprint L-brackets) === */
.bp-corners {
  position: relative;
}

.bp-corners::before,
.bp-corners::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 24px;
  border-color: var(--color-accent);
  border-style: solid;
  opacity: 0.5;
  pointer-events: none;
}

.bp-corners::before {
  top: -1px;
  left: -1px;
  border-width: 1px 0 0 1px;
}

.bp-corners::after {
  bottom: -1px;
  right: -1px;
  border-width: 0 1px 1px 0;
}

/* Full 4-corner variant */
.bp-corners--full {
  position: relative;
}

.bp-corners--full::before,
.bp-corners--full::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border-color: var(--color-accent);
  border-style: solid;
  opacity: 0.4;
  pointer-events: none;
}

.bp-corners--full::before {
  top: 0;
  left: 0;
  border-width: 1px 0 0 1px;
}

.bp-corners--full::after {
  top: 0;
  right: 0;
  border-width: 1px 1px 0 0;
}

/* Inner pseudo-elements via wrapper */
.bp-corners--full > .bp-inner-corners::before,
.bp-corners--full > .bp-inner-corners::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border-color: var(--color-accent);
  border-style: solid;
  opacity: 0.4;
  pointer-events: none;
}

.bp-corners--full > .bp-inner-corners::before {
  bottom: 0;
  left: 0;
  border-width: 0 0 1px 1px;
}

.bp-corners--full > .bp-inner-corners::after {
  bottom: 0;
  right: 0;
  border-width: 0 1px 1px 0;
}

/* === Blueprint Card === */
.bp-card {
  position: relative;
  background: white;
  border: 1px solid var(--color-border);
  padding: var(--sp-8);
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.bp-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.bp-card::before,
.bp-card::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border-color: var(--color-accent);
  border-style: solid;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.bp-card::before {
  top: -1px;
  left: -1px;
  border-width: 1px 0 0 1px;
}

.bp-card::after {
  bottom: -1px;
  right: -1px;
  border-width: 0 1px 1px 0;
}

.bp-card:hover::before,
.bp-card:hover::after {
  opacity: 0.6;
}

/* Dark variant */
.bp-card--dark {
  background: var(--color-primary-light);
  border-color: var(--color-border-dark);
  color: var(--color-text-light);
}

.bp-card--dark:hover {
  border-color: var(--color-accent);
}

/* === Blueprint Dimension Line === */
.bp-dimension {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.bp-dimension::before {
  content: '';
  flex: 1;
  height: 1px;
  background: repeating-linear-gradient(
    90deg,
    var(--bp-line) 0px,
    var(--bp-line) 4px,
    transparent 4px,
    transparent 8px
  );
}

.bp-dimension::after {
  content: '';
  flex: 1;
  height: 1px;
  background: repeating-linear-gradient(
    90deg,
    var(--bp-line) 0px,
    var(--bp-line) 4px,
    transparent 4px,
    transparent 8px
  );
}

/* === Blueprint Section Marker === */
.bp-section-marker {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--color-accent);
}

.bp-section-marker::before {
  content: '';
  display: block;
  width: 8px;
  height: 8px;
  border: 1px solid var(--color-accent);
  transform: rotate(45deg);
}

/* === Blueprint Tag === */
.bp-tag {
  display: inline-flex;
  align-items: center;
  padding: var(--sp-1) var(--sp-3);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-wide);
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  text-transform: uppercase;
}

/* === Blueprint Number === */
.bp-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--color-accent);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-accent);
  letter-spacing: var(--ls-wide);
}

/* === Blueprint Connection Line (Vertical) === */
.bp-vline {
  width: 1px;
  height: 40px;
  background: repeating-linear-gradient(
    180deg,
    var(--bp-line) 0px,
    var(--bp-line) 4px,
    transparent 4px,
    transparent 8px
  );
  margin: 0 auto;
}

/* === Animation: Fade In Up === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }

/* === Blueprint Pulse (for scores/gauges) === */
@keyframes bpPulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.8; }
}

.bp-pulse {
  animation: bpPulse 2s ease-in-out infinite;
}