.certificate-list,
.hidden-certificates {
  display: grid;
  grid-template-columns:
    repeat(auto-fit, minmax(320px, 1fr));
  gap: 18px;
}

/* hidden animation container fix */
.hidden-certificates {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transform: translateY(-10px);
  transition:
    max-height 0.7s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.45s ease,
    transform 0.45s ease;
}

.hidden-certificates.show {
  max-height: 4000px;
  opacity: 1;
  transform: translateY(0);
}

.certificate-card {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  min-height: 170px;
  padding: 1.4rem;
  border-radius: 24px;
  background:
    linear-gradient(
      145deg,
      rgba(255,255,255,0.03),
      rgba(255,255,255,0.015)
    );
  border: 1px solid rgba(255,255,255,0.06);
  backdrop-filter: blur(10px);
  overflow: hidden;
  transition:
    transform 0.45s cubic-bezier(0.22, 1, 0.36, 1),
    border-color 0.35s ease,
    box-shadow 0.35s ease,
    background 0.35s ease;
}

/* glow orb */
.certificate-card::before {
  content: "";
  position: absolute;
  width: 180px;
  height: 180px;
  top: -80px;
  right: -80px;
  border-radius: 50%;
  background:
    radial-gradient(
      circle,
      rgba(0,212,255,0.12),
      transparent 70%
    );
  opacity: 0;
  transition: opacity 0.45s ease;
}

.certificate-card:hover::before {
  opacity: 1;
}

.certificate-card:hover {
  transform:
    translateY(-8px)
    scale(1.015);
  border-color: rgba(0,212,255,0.18);
  background:
    linear-gradient(
      145deg,
      rgba(0,212,255,0.04),
      rgba(124,92,255,0.03)
    );
  box-shadow:
    0 18px 40px rgba(0,0,0,0.22),
    0 0 25px rgba(0,212,255,0.08);
}

.certificate-icon {
  width: 58px;
  height: 58px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background:
    linear-gradient(
      135deg,
      rgba(0,212,255,0.12),
      rgba(124,92,255,0.12)
    );
  border: 1px solid rgba(255,255,255,0.08);
  transition:
    transform 0.35s ease,
    box-shadow 0.35s ease;
}

.certificate-icon img {
  width: 68%;
  transition: transform 0.35s ease;
}

.certificate-card:hover .certificate-icon {
  transform:
    rotate(-6deg)
    scale(1.07);
  box-shadow:
    0 0 22px rgba(0,212,255,0.14);
}

.certificate-card:hover .certificate-icon img {
  transform: scale(1.08);
}

.certificate-card .card-title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 6px;
  transition:
    transform 0.35s ease,
    color 0.35s ease;
}

.certificate-card .card-sub {
  color: var(--text2);
  font-size: 14px;
  margin-bottom: 8px;
  transition:
    transform 0.35s ease,
    opacity 0.35s ease;
}

.certificate-card .card-date {
  font-size: 13px;
  opacity: 0.7;
  margin-bottom: 10px;
  transition:
    transform 0.35s ease,
    opacity 0.35s ease;
}

.certificate-card:hover .card-title {
  transform: translateX(4px);
  color: #00d4ff;
}

.certificate-card:hover .card-sub,
.certificate-card:hover .card-date {
  transform: translateX(3px);
}

.certificate-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background:
    linear-gradient(
      135deg,
      rgba(0,212,255,0.08),
      rgba(124,92,255,0.06)
    );
  border: 1px solid rgba(255,255,255,0.08);
  color: #6fe6ff;
  text-decoration: none;
  font-size: 12px;
  font-weight: 600;
  transition:
    transform 0.3s ease,
    border-color 0.3s ease,
    box-shadow 0.3s ease;
}

.certificate-badge:hover {
  transform:
    translateY(-2px)
    scale(1.03);
  border-color: rgba(0,212,255,0.22);
  box-shadow:
    0 0 18px rgba(0,212,255,0.12);
}

.certificate-toggle-btn {
  margin-top: 20px;
  padding: 12px 28px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.08);
  background:
    linear-gradient(
      135deg,
      rgba(255,255,255,0.02),
      rgba(255,255,255,0.01)
    );
  color: var(--text);
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition:
    transform 0.35s ease,
    border-color 0.35s ease,
    background 0.35s ease,
    box-shadow 0.35s ease;
}

.certificate-toggle-btn:hover {
  transform:
    translateY(-3px)
    scale(1.03);
  border-color: rgba(0,212,255,0.22);
  background:
    linear-gradient(
      135deg,
      rgba(0,212,255,0.08),
      rgba(124,92,255,0.06)
    );
  box-shadow:
    0 10px 26px rgba(0,212,255,0.08);
}

@media (max-width: 768px) {
  .certificate-list,
  .hidden-certificates {
    grid-template-columns: 1fr;
  }

  .certificate-card {
    min-height: auto;
  }
}

[dir="rtl"] .certificate-card {
  flex-direction: row-reverse;
  justify-content: space-between;
}