/* Signal Cards Section
/* ---------------------------------------------------------- */

.signal-card-main {
  padding: 60px 0;
}

.signal-container {
  max-width: 1200px;
  margin: 0 auto;
}

.signal-container .container {
  width: 100%;
}

.signal-heading {
  font-family: "Inter", Aeonik, "Segoe UI", sans-serif;
  font-size: 5.5rem;
  font-weight: 800;
  color: #0a0a0a;
  margin-bottom: 40px;
  text-align: center;
  width: 70%;
  margin: 0px auto 40px auto;
}

/* Cards Grid */
.signal-cards-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 24px;
}

/* Individual Card */
.signal-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: #fff;
  border-radius: 20px;
  padding: 36px 32px 32px;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  border: 1px solid #e8edf2;
  transition:
    box-shadow 0.3s ease,
    transform 0.25s ease;
  min-height: 320px;
}

/* Background Video */
.signal-card-bg-video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  transform: translate(-50%, -50%);
  object-fit: cover;
  z-index: 0;
  pointer-events: none;
}

.signal-card::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100%;
  background: linear-gradient(
    to bottom,
    var(--signal-card-gradient, rgba(107, 145, 191, 0.35)) 0%,
    transparent 100%
  );
  pointer-events: none;
  border-radius: 0 0 16px 16px;
}

.signal-card:hover {
  box-shadow: 0 12px 40px rgba(0, 80, 180, 0.12);
  transform: translateY(-4px);
  text-decoration: none;
  color: inherit;
}

/* Card Body */
.signal-card-body {
  position: relative;
  z-index: 1;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 1rem;
}

.signal-card-label {
  display: inline-block;
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--signal-card-label-color, #0080ff);
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}

.signal-card-title {
  font-family: "Inter", Aeonik, "Segoe UI", sans-serif;
  font-size: 1.8rem;
  font-weight: 600;
  line-height: 1.3;
  color: #0a0a0a;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  margin: 0 0 16px;
  width: 22%;
  text-align: center;
}

.signal-card-desc {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  font-size: 1.35rem;
  font-weight: 400;
  line-height: 1.65;
  color: #000;
  margin: 0;
  flex: 1;
  width: 50%;
  text-align: center;
}

/* Card Footer / Arrow */
.signal-card-footer {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  margin-top: 24px;
}

.signal-card-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--signal-card-label-color, #0080ff);
  color: var(--signal-card-label-color, #0080ff);
  transition:
    background 0.25s ease,
    color 0.25s ease;
  cursor: pointer;
}

.signal-card-arrow:hover {
  background: var(--signal-card-label-color);
  color: #fff;
}

/* Responsive */
@media (max-width: 991px) {
  .signal-cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .signal-heading {
    font-size: 2.6rem;
  }
}

@media (max-width: 600px) {
  .signal-cards-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .signal-card {
    padding: 28px 24px 24px;
    min-height: 260px;
    margin: 2rem;
  }

  .signal-heading {
    font-size: 2.2rem;
    margin-bottom: 28px;
  }

  .signal-card-title {
    font-size: 1.6rem;
  }
}