.expertin-student-area {
  --expertin-bg: #f7f9fb;
  --expertin-panel: #ffffff;
  --expertin-text: #18212f;
  --expertin-muted: #5d6878;
  --expertin-border: #d9e0e8;
  --expertin-primary: #1268b3;
  --expertin-primary-hover: #0e5797;
  --expertin-success: #176c43;
  --expertin-error: #b3261e;
  --expertin-info: #2f5c7c;
  color: var(--expertin-text);
  font-family: inherit;
  margin: 32px auto;
  max-width: 720px;
  width: 100%;
}

.expertin-student-area__panel {
  background: var(--expertin-panel);
  border: 1px solid var(--expertin-border);
  border-radius: 8px;
  box-shadow: 0 18px 48px rgba(24, 33, 47, 0.08);
  padding: 28px;
}

.expertin-student-area__form {
  margin: 0;
}

.expertin-student-area__label {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.35;
  margin: 0 0 10px;
}

.expertin-student-area__row {
  align-items: stretch;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr) auto;
}

.expertin-student-area__input {
  background: #ffffff;
  border: 1px solid var(--expertin-border);
  border-radius: 6px;
  color: var(--expertin-text);
  font: inherit;
  min-height: 48px;
  min-width: 0;
  padding: 10px 12px;
  width: 100%;
}

.expertin-student-area__input:focus {
  border-color: var(--expertin-primary);
  box-shadow: 0 0 0 3px rgba(18, 104, 179, 0.14);
  outline: 0;
}

.expertin-student-area__button {
  align-items: center;
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-weight: 700;
  justify-content: center;
  line-height: 1.2;
  min-height: 48px;
  padding: 10px 16px;
  text-decoration: none;
  transition: background-color 150ms ease, border-color 150ms ease, color 150ms ease;
  white-space: normal;
}

.expertin-student-area__button:disabled {
  cursor: wait;
  opacity: 0.7;
}

.expertin-student-area__button--primary,
.expertin-student-area__button--provider {
  background: var(--expertin-primary);
  color: #ffffff;
}

.expertin-student-area__button--primary:hover,
.expertin-student-area__button--provider:hover {
  background: var(--expertin-primary-hover);
  color: #ffffff;
}

.expertin-student-area__button--secondary {
  background: #ffffff;
  border-color: var(--expertin-border);
  color: var(--expertin-text);
  margin-top: 14px;
}

.expertin-student-area__button--secondary:hover {
  border-color: var(--expertin-primary);
  color: var(--expertin-primary);
}

.expertin-student-area__status,
.expertin-student-area__message {
  font-size: 1rem;
  line-height: 1.45;
  margin-top: 16px;
}

.expertin-student-area__status:empty {
  display: none;
}

.expertin-student-area__status--error,
.expertin-student-area__message--error {
  color: var(--expertin-error);
}

.expertin-student-area__status--success,
.expertin-student-area__message--success {
  color: var(--expertin-success);
  font-weight: 700;
}

.expertin-student-area__status--info {
  color: var(--expertin-info);
}

.expertin-student-area__provider-title {
  color: var(--expertin-muted);
  font-size: 0.95rem;
  line-height: 1.4;
  margin: 20px 0 12px;
}

.expertin-student-area__provider {
  align-items: center;
  border-top: 1px solid var(--expertin-border);
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(180px, auto) minmax(0, 1fr);
  padding: 14px 0;
}

.expertin-student-area__provider:last-child {
  border-bottom: 1px solid var(--expertin-border);
}

.expertin-student-area__masked {
  color: var(--expertin-muted);
  font-size: 0.95rem;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.expertin-student-area__diagnostic {
  background: #111827;
  border-radius: 6px;
  color: #f8fafc;
  font-size: 0.82rem;
  line-height: 1.5;
  margin: 16px 0 0;
  max-width: 100%;
  overflow: auto;
  padding: 12px;
  white-space: pre-wrap;
}

@media (max-width: 640px) {
  .expertin-student-area {
    margin: 20px auto;
  }

  .expertin-student-area__panel {
    padding: 20px;
  }

  .expertin-student-area__row,
  .expertin-student-area__provider {
    grid-template-columns: 1fr;
  }

  .expertin-student-area__button {
    width: 100%;
  }
}