/* 🎓 IHK INTERACTIVE TOOLS & EXAM STYLES 🎓 */
.ihk-tool-card {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 12px;
  padding: 24px;
  margin: 24px 0;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  color: #f8fafc;
  font-family: inherit;
}

.ihk-tool-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #334155;
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.ihk-tool-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: #38bdf8;
  display: flex;
  align-items: center;
  gap: 10px;
}

.ihk-badge {
  display: inline-block;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: 9999px;
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.ihk-badge-success {
  background: rgba(34, 197, 94, 0.15);
  color: #4ade80;
  border-color: rgba(34, 197, 94, 0.3);
}

.ihk-badge-warning {
  background: rgba(234, 179, 8, 0.15);
  color: #facc15;
  border-color: rgba(234, 179, 8, 0.3);
}

.ihk-badge-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border-color: rgba(239, 68, 68, 0.3);
}

.ihk-input-group {
  margin-bottom: 16px;
}

.ihk-input-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: #94a3b8;
  margin-bottom: 6px;
}

.ihk-input, .ihk-select {
  width: 100%;
  background: #0f172a;
  border: 1px solid #475569;
  border-radius: 6px;
  padding: 10px 14px;
  color: #f8fafc;
  font-size: 0.95rem;
  transition: all 0.2s;
  box-sizing: border-box;
}

.ihk-input:focus, .ihk-select:focus {
  outline: none;
  border-color: #38bdf8;
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.2);
}

.ihk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #0284c7;
  color: white;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.ihk-btn:hover {
  background: #0369a1;
}

.ihk-btn:active {
  transform: scale(0.98);
}

.ihk-btn-success {
  background: #16a34a;
}
.ihk-btn-success:hover {
  background: #15803d;
}

.ihk-btn-secondary {
  background: #475569;
}
.ihk-btn-secondary:hover {
  background: #334155;
}

.ihk-result-box {
  margin-top: 20px;
  padding: 16px;
  border-radius: 8px;
  background: #0f172a;
  border: 1px solid #334155;
  display: none;
}

.ihk-result-box.active {
  display: block;
}

.ihk-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 0.9rem;
}

.ihk-table th, .ihk-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid #334155;
}

.ihk-table th {
  background: #0f172a;
  color: #38bdf8;
  font-weight: 600;
}

.ihk-table tr:hover td {
  background: rgba(56, 189, 248, 0.05);
}

/* Exam Timer Widget */
.ihk-exam-banner {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #0f172a;
  border-bottom: 2px solid #0284c7;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

.ihk-timer-display {
  font-family: monospace;
  font-size: 1.4rem;
  font-weight: 700;
  color: #38bdf8;
  background: #1e293b;
  padding: 4px 14px;
  border-radius: 6px;
  border: 1px solid #334155;
}

.ihk-timer-warning {
  color: #f87171 !important;
  border-color: #ef4444 !important;
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}